Index: coreutils-8.32-new/src/ls.c
===================================================================
--- coreutils-8.32-new/src/ls.c (nonexistent)
+++ coreutils-8.32-new/src/ls.c (revision 5)
@@ -0,0 +1,5529 @@
+/* 'dir', 'vdir' and 'ls' directory listing programs for GNU.
+ Copyright (C) 1985-2020 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* If ls_mode is LS_MULTI_COL,
+ the multi-column format is the default regardless
+ of the type of output device.
+ This is for the 'dir' program.
+
+ If ls_mode is LS_LONG_FORMAT,
+ the long format is the default regardless of the
+ type of output device.
+ This is for the 'vdir' program.
+
+ If ls_mode is LS_LS,
+ the output format depends on whether the output
+ device is a terminal.
+ This is for the 'ls' program. */
+
+/* Written by Richard Stallman and David MacKenzie. */
+
+/* Color support by Peter Anvin <Peter.Anvin@linux.org> and Dennis
+ Flaherty <dennisf@denix.elk.miles.com> based on original patches by
+ Greg Lee <lee@uhunix.uhcc.hawaii.edu>. */
+
+#include <config.h>
+#include <sys/types.h>
+
+#include <termios.h>
+#if HAVE_STROPTS_H
+# include <stropts.h>
+#endif
+#include <sys/ioctl.h>
+
+#ifdef WINSIZE_IN_PTEM
+# include <sys/stream.h>
+# include <sys/ptem.h>
+#endif
+
+#ifdef __linux__
+# include <sys/syscall.h>
+#endif
+
+#include <stdio.h>
+#include <assert.h>
+#include <setjmp.h>
+#include <pwd.h>
+#include <getopt.h>
+#include <signal.h>
+#include <selinux/selinux.h>
+#include <wchar.h>
+
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+
+/* Use SA_NOCLDSTOP as a proxy for whether the sigaction machinery is
+ present. */
+#ifndef SA_NOCLDSTOP
+# define SA_NOCLDSTOP 0
+# define sigprocmask(How, Set, Oset) /* empty */
+# define sigset_t int
+# if ! HAVE_SIGINTERRUPT
+# define siginterrupt(sig, flag) /* empty */
+# endif
+#endif
+
+/* NonStop circa 2011 lacks both SA_RESTART and siginterrupt, so don't
+ restart syscalls after a signal handler fires. This may cause
+ colors to get messed up on the screen if 'ls' is interrupted, but
+ that's the best we can do on such a platform. */
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+
+#include "system.h"
+#include <fnmatch.h>
+
+#include "acl.h"
+#include "argmatch.h"
+#include "c-strcase.h"
+#include "dev-ino.h"
+#include "die.h"
+#include "error.h"
+#include "filenamecat.h"
+#include "hard-locale.h"
+#include "hash.h"
+#include "human.h"
+#include "filemode.h"
+#include "filevercmp.h"
+#include "idcache.h"
+#include "ls.h"
+#include "mbswidth.h"
+#include "mpsort.h"
+#include "obstack.h"
+#include "quote.h"
+#include "smack.h"
+#include "stat-size.h"
+#include "stat-time.h"
+#include "strftime.h"
+#include "xdectoint.h"
+#include "xstrtol.h"
+#include "xstrtol-error.h"
+#include "areadlink.h"
+#include "mbsalign.h"
+#include "dircolors.h"
+#include "xgethostname.h"
+#include "c-ctype.h"
+#include "canonicalize.h"
+#include "statx.h"
+
+/* Include <sys/capability.h> last to avoid a clash of <sys/types.h>
+ include guards with some premature versions of libcap.
+ For more details, see <https://bugzilla.redhat.com/483548>. */
+#ifdef HAVE_CAP
+# include <sys/capability.h>
+#endif
+
+#define PROGRAM_NAME (ls_mode == LS_LS ? "ls" \
+ : (ls_mode == LS_MULTI_COL \
+ ? "dir" : "vdir"))
+
+#define AUTHORS \
+ proper_name ("Richard M. Stallman"), \
+ proper_name ("David MacKenzie")
+
+#define obstack_chunk_alloc malloc
+#define obstack_chunk_free free
+
+/* Return an int indicating the result of comparing two integers.
+ Subtracting doesn't always work, due to overflow. */
+#define longdiff(a, b) ((a) < (b) ? -1 : (a) > (b))
+
+/* Unix-based readdir implementations have historically returned a dirent.d_ino
+ value that is sometimes not equal to the stat-obtained st_ino value for
+ that same entry. This error occurs for a readdir entry that refers
+ to a mount point. readdir's error is to return the inode number of
+ the underlying directory -- one that typically cannot be stat'ed, as
+ long as a file system is mounted on that directory. RELIABLE_D_INO
+ encapsulates whether we can use the more efficient approach of relying
+ on readdir-supplied d_ino values, or whether we must incur the cost of
+ calling stat or lstat to obtain each guaranteed-valid inode number. */
+
+#ifndef READDIR_LIES_ABOUT_MOUNTPOINT_D_INO
+# define READDIR_LIES_ABOUT_MOUNTPOINT_D_INO 1
+#endif
+
+#if READDIR_LIES_ABOUT_MOUNTPOINT_D_INO
+# define RELIABLE_D_INO(dp) NOT_AN_INODE_NUMBER
+#else
+# define RELIABLE_D_INO(dp) D_INO (dp)
+#endif
+
+#if ! HAVE_STRUCT_STAT_ST_AUTHOR
+# define st_author st_uid
+#endif
+
+enum filetype
+ {
+ unknown,
+ fifo,
+ chardev,
+ directory,
+ blockdev,
+ normal,
+ symbolic_link,
+ sock,
+ whiteout,
+ arg_directory
+ };
+
+/* Display letters and indicators for each filetype.
+ Keep these in sync with enum filetype. */
+static char const filetype_letter[] = "?pcdb-lswd";
+
+/* Ensure that filetype and filetype_letter have the same
+ number of elements. */
+verify (sizeof filetype_letter - 1 == arg_directory + 1);
+
+#define FILETYPE_INDICATORS \
+ { \
+ C_ORPHAN, C_FIFO, C_CHR, C_DIR, C_BLK, C_FILE, \
+ C_LINK, C_SOCK, C_FILE, C_DIR \
+ }
+
+enum acl_type
+ {
+ ACL_T_NONE,
+ ACL_T_LSM_CONTEXT_ONLY,
+ ACL_T_YES
+ };
+
+struct fileinfo
+ {
+ /* The file name. */
+ char *name;
+
+ /* For symbolic link, name of the file linked to, otherwise zero. */
+ char *linkname;
+
+ /* For terminal hyperlinks. */
+ char *absolute_name;
+
+ struct stat stat;
+
+ enum filetype filetype;
+
+ /* For symbolic link and long listing, st_mode of file linked to, otherwise
+ zero. */
+ mode_t linkmode;
+
+ /* security context. */
+ char *scontext;
+
+ bool stat_ok;
+
+ /* For symbolic link and color printing, true if linked-to file
+ exists, otherwise false. */
+ bool linkok;
+
+ /* For long listings, true if the file has an access control list,
+ or a security context. */
+ enum acl_type acl_type;
+
+ /* For color listings, true if a regular file has capability info. */
+ bool has_capability;
+
+ /* Whether file name needs quoting. tri-state with -1 == unknown. */
+ int quoted;
+ };
+
+#define LEN_STR_PAIR(s) sizeof (s) - 1, s
+
+/* Null is a valid character in a color indicator (think about Epson
+ printers, for example) so we have to use a length/buffer string
+ type. */
+
+struct bin_str
+ {
+ size_t len; /* Number of bytes */
+ const char *string; /* Pointer to the same */
+ };
+
+#if ! HAVE_TCGETPGRP
+# define tcgetpgrp(Fd) 0
+#endif
+
+static size_t quote_name (char const *name,
+ struct quoting_options const *options,
+ int needs_general_quoting,
+ const struct bin_str *color,
+ bool allow_pad, struct obstack *stack,
+ char const *absolute_name);
+static size_t quote_name_buf (char **inbuf, size_t bufsize, char *name,
+ struct quoting_options const *options,
+ int needs_general_quoting, size_t *width,
+ bool *pad);
+static char *make_link_name (char const *name, char const *linkname);
+static int decode_switches (int argc, char **argv);
+static bool file_ignored (char const *name);
+static uintmax_t gobble_file (char const *name, enum filetype type,
+ ino_t inode, bool command_line_arg,
+ char const *dirname);
+static const struct bin_str * get_color_indicator (const struct fileinfo *f,
+ bool symlink_target);
+static bool print_color_indicator (const struct bin_str *ind);
+static void put_indicator (const struct bin_str *ind);
+static void add_ignore_pattern (const char *pattern);
+static void attach (char *dest, const char *dirname, const char *name);
+static void clear_files (void);
+static void extract_dirs_from_files (char const *dirname,
+ bool command_line_arg);
+static void get_link_name (char const *filename, struct fileinfo *f,
+ bool command_line_arg);
+static void indent (size_t from, size_t to);
+static size_t calculate_columns (bool by_columns);
+static void print_current_files (void);
+static void print_dir (char const *name, char const *realname,
+ bool command_line_arg);
+static size_t print_file_name_and_frills (const struct fileinfo *f,
+ size_t start_col);
+static void print_horizontal (void);
+static int format_user_width (uid_t u);
+static int format_group_width (gid_t g);
+static void print_long_format (const struct fileinfo *f);
+static void print_many_per_line (void);
+static size_t print_name_with_quoting (const struct fileinfo *f,
+ bool symlink_target,
+ struct obstack *stack,
+ size_t start_col);
+static void prep_non_filename_text (void);
+static bool print_type_indicator (bool stat_ok, mode_t mode,
+ enum filetype type);
+static void print_with_separator (char sep);
+static void queue_directory (char const *name, char const *realname,
+ bool command_line_arg);
+static void sort_files (void);
+static void parse_ls_color (void);
+
+static void getenv_quoting_style (void);
+
+/* Initial size of hash table.
+ Most hierarchies are likely to be shallower than this. */
+#define INITIAL_TABLE_SIZE 30
+
+/* The set of 'active' directories, from the current command-line argument
+ to the level in the hierarchy at which files are being listed.
+ A directory is represented by its device and inode numbers (struct dev_ino).
+ A directory is added to this set when ls begins listing it or its
+ entries, and it is removed from the set just after ls has finished
+ processing it. This set is used solely to detect loops, e.g., with
+ mkdir loop; cd loop; ln -s ../loop sub; ls -RL */
+static Hash_table *active_dir_set;
+
+#define LOOP_DETECT (!!active_dir_set)
+
+/* The table of files in the current directory:
+
+ 'cwd_file' points to a vector of 'struct fileinfo', one per file.
+ 'cwd_n_alloc' is the number of elements space has been allocated for.
+ 'cwd_n_used' is the number actually in use. */
+
+/* Address of block containing the files that are described. */
+static struct fileinfo *cwd_file;
+
+/* Length of block that 'cwd_file' points to, measured in files. */
+static size_t cwd_n_alloc;
+
+/* Index of first unused slot in 'cwd_file'. */
+static size_t cwd_n_used;
+
+/* Whether files needs may need padding due to quoting. */
+static bool cwd_some_quoted;
+
+/* Whether quoting style _may_ add outer quotes,
+ and whether aligning those is useful. */
+static bool align_variable_outer_quotes;
+
+/* Vector of pointers to files, in proper sorted order, and the number
+ of entries allocated for it. */
+static void **sorted_file;
+static size_t sorted_file_alloc;
+
+/* When true, in a color listing, color each symlink name according to the
+ type of file it points to. Otherwise, color them according to the 'ln'
+ directive in LS_COLORS. Dangling (orphan) symlinks are treated specially,
+ regardless. This is set when 'ln=target' appears in LS_COLORS. */
+
+static bool color_symlink_as_referent;
+
+static char const *hostname;
+
+/* mode of appropriate file for colorization */
+#define FILE_OR_LINK_MODE(File) \
+ ((color_symlink_as_referent && (File)->linkok) \
+ ? (File)->linkmode : (File)->stat.st_mode)
+
+
+/* Record of one pending directory waiting to be listed. */
+
+struct pending
+ {
+ char *name;
+ /* If the directory is actually the file pointed to by a symbolic link we
+ were told to list, 'realname' will contain the name of the symbolic
+ link, otherwise zero. */
+ char *realname;
+ bool command_line_arg;
+ struct pending *next;
+ };
+
+static struct pending *pending_dirs;
+
+/* Current time in seconds and nanoseconds since 1970, updated as
+ needed when deciding whether a file is recent. */
+
+static struct timespec current_time;
+
+static bool print_scontext;
+static char UNKNOWN_SECURITY_CONTEXT[] = "?";
+
+/* Whether any of the files has an ACL. This affects the width of the
+ mode column. */
+
+static bool any_has_acl;
+
+/* The number of columns to use for columns containing inode numbers,
+ block sizes, link counts, owners, groups, authors, major device
+ numbers, minor device numbers, and file sizes, respectively. */
+
+static int inode_number_width;
+static int block_size_width;
+static int nlink_width;
+static int scontext_width;
+static int owner_width;
+static int group_width;
+static int author_width;
+static int major_device_number_width;
+static int minor_device_number_width;
+static int file_size_width;
+
+/* Option flags */
+
+/* long_format for lots of info, one per line.
+ one_per_line for just names, one per line.
+ many_per_line for just names, many per line, sorted vertically.
+ horizontal for just names, many per line, sorted horizontally.
+ with_commas for just names, many per line, separated by commas.
+
+ -l (and other options that imply -l), -1, -C, -x and -m control
+ this parameter. */
+
+enum format
+ {
+ long_format, /* -l and other options that imply -l */
+ one_per_line, /* -1 */
+ many_per_line, /* -C */
+ horizontal, /* -x */
+ with_commas /* -m */
+ };
+
+static enum format format;
+
+/* 'full-iso' uses full ISO-style dates and times. 'long-iso' uses longer
+ ISO-style timestamps, though shorter than 'full-iso'. 'iso' uses shorter
+ ISO-style timestamps. 'locale' uses locale-dependent timestamps. */
+enum time_style
+ {
+ full_iso_time_style, /* --time-style=full-iso */
+ long_iso_time_style, /* --time-style=long-iso */
+ iso_time_style, /* --time-style=iso */
+ locale_time_style /* --time-style=locale */
+ };
+
+static char const *const time_style_args[] =
+{
+ "full-iso", "long-iso", "iso", "locale", NULL
+};
+static enum time_style const time_style_types[] =
+{
+ full_iso_time_style, long_iso_time_style, iso_time_style,
+ locale_time_style
+};
+ARGMATCH_VERIFY (time_style_args, time_style_types);
+
+/* Type of time to print or sort by. Controlled by -c and -u.
+ The values of each item of this enum are important since they are
+ used as indices in the sort functions array (see sort_files()). */
+
+enum time_type
+ {
+ time_mtime, /* default */
+ time_ctime, /* -c */
+ time_atime, /* -u */
+ time_btime, /* birth time */
+ time_numtypes /* the number of elements of this enum */
+ };
+
+static enum time_type time_type;
+
+/* The file characteristic to sort by. Controlled by -t, -S, -U, -X, -v.
+ The values of each item of this enum are important since they are
+ used as indices in the sort functions array (see sort_files()). */
+
+enum sort_type
+ {
+ sort_none = -1, /* -U */
+ sort_name, /* default */
+ sort_extension, /* -X */
+ sort_size, /* -S */
+ sort_version, /* -v */
+ sort_time, /* -t */
+ sort_numtypes /* the number of elements of this enum */
+ };
+
+static enum sort_type sort_type;
+
+/* Direction of sort.
+ false means highest first if numeric,
+ lowest first if alphabetic;
+ these are the defaults.
+ true means the opposite order in each case. -r */
+
+static bool sort_reverse;
+
+/* True means to display owner information. -g turns this off. */
+
+static bool print_owner = true;
+
+/* True means to display author information. */
+
+static bool print_author;
+
+/* True means to display group information. -G and -o turn this off. */
+
+static bool print_group = true;
+
+/* True means print the user and group id's as numbers rather
+ than as names. -n */
+
+static bool numeric_ids;
+
+/* True means mention the size in blocks of each file. -s */
+
+static bool print_block_size;
+
+/* Human-readable options for output, when printing block counts. */
+static int human_output_opts;
+
+/* The units to use when printing block counts. */
+static uintmax_t output_block_size;
+
+/* Likewise, but for file sizes. */
+static int file_human_output_opts;
+static uintmax_t file_output_block_size = 1;
+
+/* Follow the output with a special string. Using this format,
+ Emacs' dired mode starts up twice as fast, and can handle all
+ strange characters in file names. */
+static bool dired;
+
+/* 'none' means don't mention the type of files.
+ 'slash' means mention directories only, with a '/'.
+ 'file_type' means mention file types.
+ 'classify' means mention file types and mark executables.
+
+ Controlled by -F, -p, and --indicator-style. */
+
+enum indicator_style
+ {
+ none, /* --indicator-style=none */
+ slash, /* -p, --indicator-style=slash */
+ file_type, /* --indicator-style=file-type */
+ classify /* -F, --indicator-style=classify */
+ };
+
+static enum indicator_style indicator_style;
+
+/* Names of indicator styles. */
+static char const *const indicator_style_args[] =
+{
+ "none", "slash", "file-type", "classify", NULL
+};
+static enum indicator_style const indicator_style_types[] =
+{
+ none, slash, file_type, classify
+};
+ARGMATCH_VERIFY (indicator_style_args, indicator_style_types);
+
+/* True means use colors to mark types. Also define the different
+ colors as well as the stuff for the LS_COLORS environment variable.
+ The LS_COLORS variable is now in a termcap-like format. */
+
+static bool print_with_color;
+
+static bool print_hyperlink;
+
+/* Whether we used any colors in the output so far. If so, we will
+ need to restore the default color later. If not, we will need to
+ call prep_non_filename_text before using color for the first time. */
+
+static bool used_color = false;
+
+enum when_type
+ {
+ when_never, /* 0: default or --color=never */
+ when_always, /* 1: --color=always */
+ when_if_tty /* 2: --color=tty */
+ };
+
+enum Dereference_symlink
+ {
+ DEREF_UNDEFINED = 1,
+ DEREF_NEVER,
+ DEREF_COMMAND_LINE_ARGUMENTS, /* -H */
+ DEREF_COMMAND_LINE_SYMLINK_TO_DIR, /* the default, in certain cases */
+ DEREF_ALWAYS /* -L */
+ };
+
+enum indicator_no
+ {
+ C_LEFT, C_RIGHT, C_END, C_RESET, C_NORM, C_FILE, C_DIR, C_LINK,
+ C_FIFO, C_SOCK,
+ C_BLK, C_CHR, C_MISSING, C_ORPHAN, C_EXEC, C_DOOR, C_SETUID, C_SETGID,
+ C_STICKY, C_OTHER_WRITABLE, C_STICKY_OTHER_WRITABLE, C_CAP, C_MULTIHARDLINK,
+ C_CLR_TO_EOL
+ };
+
+static const char *const indicator_name[]=
+ {
+ "lc", "rc", "ec", "rs", "no", "fi", "di", "ln", "pi", "so",
+ "bd", "cd", "mi", "or", "ex", "do", "su", "sg", "st",
+ "ow", "tw", "ca", "mh", "cl", NULL
+ };
+
+struct color_ext_type
+ {
+ struct bin_str ext; /* The extension we're looking for */
+ struct bin_str seq; /* The sequence to output when we do */
+ struct color_ext_type *next; /* Next in list */
+ };
+
+static struct bin_str color_indicator[] =
+ {
+ { LEN_STR_PAIR ("\033[") }, /* lc: Left of color sequence */
+ { LEN_STR_PAIR ("m") }, /* rc: Right of color sequence */
+ { 0, NULL }, /* ec: End color (replaces lc+rs+rc) */
+ { LEN_STR_PAIR ("0") }, /* rs: Reset to ordinary colors */
+ { 0, NULL }, /* no: Normal */
+ { 0, NULL }, /* fi: File: default */
+ { LEN_STR_PAIR ("01;34") }, /* di: Directory: bright blue */
+ { LEN_STR_PAIR ("01;36") }, /* ln: Symlink: bright cyan */
+ { LEN_STR_PAIR ("33") }, /* pi: Pipe: yellow/brown */
+ { LEN_STR_PAIR ("01;35") }, /* so: Socket: bright magenta */
+ { LEN_STR_PAIR ("01;33") }, /* bd: Block device: bright yellow */
+ { LEN_STR_PAIR ("01;33") }, /* cd: Char device: bright yellow */
+ { 0, NULL }, /* mi: Missing file: undefined */
+ { 0, NULL }, /* or: Orphaned symlink: undefined */
+ { LEN_STR_PAIR ("01;32") }, /* ex: Executable: bright green */
+ { LEN_STR_PAIR ("01;35") }, /* do: Door: bright magenta */
+ { LEN_STR_PAIR ("37;41") }, /* su: setuid: white on red */
+ { LEN_STR_PAIR ("30;43") }, /* sg: setgid: black on yellow */
+ { LEN_STR_PAIR ("37;44") }, /* st: sticky: black on blue */
+ { LEN_STR_PAIR ("34;42") }, /* ow: other-writable: blue on green */
+ { LEN_STR_PAIR ("30;42") }, /* tw: ow w/ sticky: black on green */
+ { LEN_STR_PAIR ("30;41") }, /* ca: black on red */
+ { 0, NULL }, /* mh: disabled by default */
+ { LEN_STR_PAIR ("\033[K") }, /* cl: clear to end of line */
+ };
+
+/* FIXME: comment */
+static struct color_ext_type *color_ext_list = NULL;
+
+/* Buffer for color sequences */
+static char *color_buf;
+
+/* True means to check for orphaned symbolic link, for displaying
+ colors, or to group symlink to directories with other dirs. */
+
+static bool check_symlink_mode;
+
+/* True means mention the inode number of each file. -i */
+
+static bool print_inode;
+
+/* What to do with symbolic links. Affected by -d, -F, -H, -l (and
+ other options that imply -l), and -L. */
+
+static enum Dereference_symlink dereference;
+
+/* True means when a directory is found, display info on its
+ contents. -R */
+
+static bool recursive;
+
+/* True means when an argument is a directory name, display info
+ on it itself. -d */
+
+static bool immediate_dirs;
+
+/* True means that directories are grouped before files. */
+
+static bool directories_first;
+
+/* Which files to ignore. */
+
+static enum
+{
+ /* Ignore files whose names start with '.', and files specified by
+ --hide and --ignore. */
+ IGNORE_DEFAULT,
+
+ /* Ignore '.', '..', and files specified by --ignore. */
+ IGNORE_DOT_AND_DOTDOT,
+
+ /* Ignore only files specified by --ignore. */
+ IGNORE_MINIMAL
+} ignore_mode;
+
+/* A linked list of shell-style globbing patterns. If a non-argument
+ file name matches any of these patterns, it is ignored.
+ Controlled by -I. Multiple -I options accumulate.
+ The -B option adds '*~' and '.*~' to this list. */
+
+struct ignore_pattern
+ {
+ const char *pattern;
+ struct ignore_pattern *next;
+ };
+
+static struct ignore_pattern *ignore_patterns;
+
+/* Similar to IGNORE_PATTERNS, except that -a or -A causes this
+ variable itself to be ignored. */
+static struct ignore_pattern *hide_patterns;
+
+/* True means output nongraphic chars in file names as '?'.
+ (-q, --hide-control-chars)
+ qmark_funny_chars and the quoting style (-Q, --quoting-style=WORD) are
+ independent. The algorithm is: first, obey the quoting style to get a
+ string representing the file name; then, if qmark_funny_chars is set,
+ replace all nonprintable chars in that string with '?'. It's necessary
+ to replace nonprintable chars even in quoted strings, because we don't
+ want to mess up the terminal if control chars get sent to it, and some
+ quoting methods pass through control chars as-is. */
+static bool qmark_funny_chars;
+
+/* Quoting options for file and dir name output. */
+
+static struct quoting_options *filename_quoting_options;
+static struct quoting_options *dirname_quoting_options;
+
+/* The number of chars per hardware tab stop. Setting this to zero
+ inhibits the use of TAB characters for separating columns. -T */
+static size_t tabsize;
+
+/* True means print each directory name before listing it. */
+
+static bool print_dir_name;
+
+/* The line length to use for breaking lines in many-per-line format.
+ Can be set with -w. */
+
+static size_t line_length;
+
+/* The local time zone rules, as per the TZ environment variable. */
+
+static timezone_t localtz;
+
+/* If true, the file listing format requires that stat be called on
+ each file. */
+
+static bool format_needs_stat;
+
+/* Similar to 'format_needs_stat', but set if only the file type is
+ needed. */
+
+static bool format_needs_type;
+
+/* An arbitrary limit on the number of bytes in a printed timestamp.
+ This is set to a relatively small value to avoid the need to worry
+ about denial-of-service attacks on servers that run "ls" on behalf
+ of remote clients. 1000 bytes should be enough for any practical
+ timestamp format. */
+
+enum { TIME_STAMP_LEN_MAXIMUM = MAX (1000, INT_STRLEN_BOUND (time_t)) };
+
+/* strftime formats for non-recent and recent files, respectively, in
+ -l output. */
+
+static char const *long_time_format[2] =
+ {
+ /* strftime format for non-recent files (older than 6 months), in
+ -l output. This should contain the year, month and day (at
+ least), in an order that is understood by people in your
+ locale's territory. Please try to keep the number of used
+ screen columns small, because many people work in windows with
+ only 80 columns. But make this as wide as the other string
+ below, for recent files. */
+ /* TRANSLATORS: ls output needs to be aligned for ease of reading,
+ so be wary of using variable width fields from the locale.
+ Note %b is handled specially by ls and aligned correctly.
+ Note also that specifying a width as in %5b is erroneous as strftime
+ will count bytes rather than characters in multibyte locales. */
+ N_("%b %e %Y"),
+ /* strftime format for recent files (younger than 6 months), in -l
+ output. This should contain the month, day and time (at
+ least), in an order that is understood by people in your
+ locale's territory. Please try to keep the number of used
+ screen columns small, because many people work in windows with
+ only 80 columns. But make this as wide as the other string
+ above, for non-recent files. */
+ /* TRANSLATORS: ls output needs to be aligned for ease of reading,
+ so be wary of using variable width fields from the locale.
+ Note %b is handled specially by ls and aligned correctly.
+ Note also that specifying a width as in %5b is erroneous as strftime
+ will count bytes rather than characters in multibyte locales. */
+ N_("%b %e %H:%M")
+ };
+
+/* The set of signals that are caught. */
+
+static sigset_t caught_signals;
+
+/* If nonzero, the value of the pending fatal signal. */
+
+static sig_atomic_t volatile interrupt_signal;
+
+/* A count of the number of pending stop signals that have been received. */
+
+static sig_atomic_t volatile stop_signal_count;
+
+/* Desired exit status. */
+
+static int exit_status;
+
+/* Exit statuses. */
+enum
+ {
+ /* "ls" had a minor problem. E.g., while processing a directory,
+ ls obtained the name of an entry via readdir, yet was later
+ unable to stat that name. This happens when listing a directory
+ in which entries are actively being removed or renamed. */
+ LS_MINOR_PROBLEM = 1,
+
+ /* "ls" had more serious trouble (e.g., memory exhausted, invalid
+ option or failure to stat a command line argument. */
+ LS_FAILURE = 2
+ };
+
+/* For long options that have no equivalent short option, use a
+ non-character as a pseudo short option, starting with CHAR_MAX + 1. */
+enum
+{
+ AUTHOR_OPTION = CHAR_MAX + 1,
+ BLOCK_SIZE_OPTION,
+ COLOR_OPTION,
+ DEREFERENCE_COMMAND_LINE_SYMLINK_TO_DIR_OPTION,
+ FILE_TYPE_INDICATOR_OPTION,
+ FORMAT_OPTION,
+ FULL_TIME_OPTION,
+ GROUP_DIRECTORIES_FIRST_OPTION,
+ HIDE_OPTION,
+ HYPERLINK_OPTION,
+ INDICATOR_STYLE_OPTION,
+ QUOTING_STYLE_OPTION,
+ SHOW_CONTROL_CHARS_OPTION,
+ SI_OPTION,
+ SORT_OPTION,
+ TIME_OPTION,
+ TIME_STYLE_OPTION
+};
+
+static struct option const long_options[] =
+{
+ {"all", no_argument, NULL, 'a'},
+ {"escape", no_argument, NULL, 'b'},
+ {"directory", no_argument, NULL, 'd'},
+ {"dired", no_argument, NULL, 'D'},
+ {"full-time", no_argument, NULL, FULL_TIME_OPTION},
+ {"group-directories-first", no_argument, NULL,
+ GROUP_DIRECTORIES_FIRST_OPTION},
+ {"human-readable", no_argument, NULL, 'h'},
+ {"inode", no_argument, NULL, 'i'},
+ {"kibibytes", no_argument, NULL, 'k'},
+ {"numeric-uid-gid", no_argument, NULL, 'n'},
+ {"no-group", no_argument, NULL, 'G'},
+ {"hide-control-chars", no_argument, NULL, 'q'},
+ {"reverse", no_argument, NULL, 'r'},
+ {"size", no_argument, NULL, 's'},
+ {"width", required_argument, NULL, 'w'},
+ {"almost-all", no_argument, NULL, 'A'},
+ {"ignore-backups", no_argument, NULL, 'B'},
+ {"classify", no_argument, NULL, 'F'},
+ {"file-type", no_argument, NULL, FILE_TYPE_INDICATOR_OPTION},
+ {"si", no_argument, NULL, SI_OPTION},
+ {"dereference-command-line", no_argument, NULL, 'H'},
+ {"dereference-command-line-symlink-to-dir", no_argument, NULL,
+ DEREFERENCE_COMMAND_LINE_SYMLINK_TO_DIR_OPTION},
+ {"hide", required_argument, NULL, HIDE_OPTION},
+ {"ignore", required_argument, NULL, 'I'},
+ {"indicator-style", required_argument, NULL, INDICATOR_STYLE_OPTION},
+ {"dereference", no_argument, NULL, 'L'},
+ {"literal", no_argument, NULL, 'N'},
+ {"quote-name", no_argument, NULL, 'Q'},
+ {"quoting-style", required_argument, NULL, QUOTING_STYLE_OPTION},
+ {"recursive", no_argument, NULL, 'R'},
+ {"format", required_argument, NULL, FORMAT_OPTION},
+ {"show-control-chars", no_argument, NULL, SHOW_CONTROL_CHARS_OPTION},
+ {"sort", required_argument, NULL, SORT_OPTION},
+ {"tabsize", required_argument, NULL, 'T'},
+ {"time", required_argument, NULL, TIME_OPTION},
+ {"time-style", required_argument, NULL, TIME_STYLE_OPTION},
+ {"color", optional_argument, NULL, COLOR_OPTION},
+ {"hyperlink", optional_argument, NULL, HYPERLINK_OPTION},
+ {"block-size", required_argument, NULL, BLOCK_SIZE_OPTION},
+ {"context", no_argument, 0, 'Z'},
+ {"author", no_argument, NULL, AUTHOR_OPTION},
+ {GETOPT_HELP_OPTION_DECL},
+ {GETOPT_VERSION_OPTION_DECL},
+ {NULL, 0, NULL, 0}
+};
+
+static char const *const format_args[] =
+{
+ "verbose", "long", "commas", "horizontal", "across",
+ "vertical", "single-column", NULL
+};
+static enum format const format_types[] =
+{
+ long_format, long_format, with_commas, horizontal, horizontal,
+ many_per_line, one_per_line
+};
+ARGMATCH_VERIFY (format_args, format_types);
+
+static char const *const sort_args[] =
+{
+ "none", "time", "size", "extension", "version", NULL
+};
+static enum sort_type const sort_types[] =
+{
+ sort_none, sort_time, sort_size, sort_extension, sort_version
+};
+ARGMATCH_VERIFY (sort_args, sort_types);
+
+static char const *const time_args[] =
+{
+ "atime", "access", "use",
+ "ctime", "status",
+ "birth", "creation",
+ NULL
+};
+static enum time_type const time_types[] =
+{
+ time_atime, time_atime, time_atime,
+ time_ctime, time_ctime,
+ time_btime, time_btime,
+};
+ARGMATCH_VERIFY (time_args, time_types);
+
+static char const *const when_args[] =
+{
+ /* force and none are for compatibility with another color-ls version */
+ "always", "yes", "force",
+ "never", "no", "none",
+ "auto", "tty", "if-tty", NULL
+};
+static enum when_type const when_types[] =
+{
+ when_always, when_always, when_always,
+ when_never, when_never, when_never,
+ when_if_tty, when_if_tty, when_if_tty
+};
+ARGMATCH_VERIFY (when_args, when_types);
+
+/* Information about filling a column. */
+struct column_info
+{
+ bool valid_len;
+ size_t line_len;
+ size_t *col_arr;
+};
+
+/* Array with information about column filledness. */
+static struct column_info *column_info;
+
+/* Maximum number of columns ever possible for this display. */
+static size_t max_idx;
+
+/* The minimum width of a column is 3: 1 character for the name and 2
+ for the separating white space. */
+#define MIN_COLUMN_WIDTH 3
+
+
+/* This zero-based index is used solely with the --dired option.
+ When that option is in effect, this counter is incremented for each
+ byte of output generated by this program so that the beginning
+ and ending indices (in that output) of every file name can be recorded
+ and later output themselves. */
+static size_t dired_pos;
+
+#define DIRED_PUTCHAR(c) do {putchar ((c)); ++dired_pos;} while (0)
+
+/* Write S to STREAM and increment DIRED_POS by S_LEN. */
+#define DIRED_FPUTS(s, stream, s_len) \
+ do {fputs (s, stream); dired_pos += s_len;} while (0)
+
+/* Like DIRED_FPUTS, but for use when S is a literal string. */
+#define DIRED_FPUTS_LITERAL(s, stream) \
+ do {fputs (s, stream); dired_pos += sizeof (s) - 1;} while (0)
+
+#define DIRED_INDENT() \
+ do \
+ { \
+ if (dired) \
+ DIRED_FPUTS_LITERAL (" ", stdout); \
+ } \
+ while (0)
+
+/* With --dired, store pairs of beginning and ending indices of file names. */
+static struct obstack dired_obstack;
+
+/* With --dired, store pairs of beginning and ending indices of any
+ directory names that appear as headers (just before 'total' line)
+ for lists of directory entries. Such directory names are seen when
+ listing hierarchies using -R and when a directory is listed with at
+ least one other command line argument. */
+static struct obstack subdired_obstack;
+
+/* Save the current index on the specified obstack, OBS. */
+#define PUSH_CURRENT_DIRED_POS(obs) \
+ do \
+ { \
+ if (dired) \
+ obstack_grow (obs, &dired_pos, sizeof (dired_pos)); \
+ } \
+ while (0)
+
+/* With -R, this stack is used to help detect directory cycles.
+ The device/inode pairs on this stack mirror the pairs in the
+ active_dir_set hash table. */
+static struct obstack dev_ino_obstack;
+
+/* Push a pair onto the device/inode stack. */
+static void
+dev_ino_push (dev_t dev, ino_t ino)
+{
+ void *vdi;
+ struct dev_ino *di;
+ int dev_ino_size = sizeof *di;
+ obstack_blank (&dev_ino_obstack, dev_ino_size);
+ vdi = obstack_next_free (&dev_ino_obstack);
+ di = vdi;
+ di--;
+ di->st_dev = dev;
+ di->st_ino = ino;
+}
+
+/* Pop a dev/ino struct off the global dev_ino_obstack
+ and return that struct. */
+static struct dev_ino
+dev_ino_pop (void)
+{
+ void *vdi;
+ struct dev_ino *di;
+ int dev_ino_size = sizeof *di;
+ assert (dev_ino_size <= obstack_object_size (&dev_ino_obstack));
+ obstack_blank_fast (&dev_ino_obstack, -dev_ino_size);
+ vdi = obstack_next_free (&dev_ino_obstack);
+ di = vdi;
+ return *di;
+}
+
+/* Note the use commented out below:
+#define ASSERT_MATCHING_DEV_INO(Name, Di) \
+ do \
+ { \
+ struct stat sb; \
+ assert (Name); \
+ assert (0 <= stat (Name, &sb)); \
+ assert (sb.st_dev == Di.st_dev); \
+ assert (sb.st_ino == Di.st_ino); \
+ } \
+ while (0)
+*/
+
+/* Write to standard output PREFIX, followed by the quoting style and
+ a space-separated list of the integers stored in OS all on one line. */
+
+static void
+dired_dump_obstack (const char *prefix, struct obstack *os)
+{
+ size_t n_pos;
+
+ n_pos = obstack_object_size (os) / sizeof (dired_pos);
+ if (n_pos > 0)
+ {
+ size_t *pos = (size_t *) obstack_finish (os);
+ fputs (prefix, stdout);
+ for (size_t i = 0; i < n_pos; i++)
+ printf (" %lu", (unsigned long int) pos[i]);
+ putchar ('\n');
+ }
+}
+
+/* Return the platform birthtime member of the stat structure,
+ or fallback to the mtime member, which we have populated
+ from the statx structure or reset to an invalid timestamp
+ where birth time is not supported. */
+static struct timespec
+get_stat_btime (struct stat const *st)
+{
+ struct timespec btimespec;
+
+#if HAVE_STATX && defined STATX_INO
+ btimespec = get_stat_mtime (st);
+#else
+ btimespec = get_stat_birthtime (st);
+#endif
+
+ return btimespec;
+}
+
+#if HAVE_STATX && defined STATX_INO
+static unsigned int _GL_ATTRIBUTE_PURE
+time_type_to_statx (void)
+{
+ switch (time_type)
+ {
+ case time_ctime:
+ return STATX_CTIME;
+ case time_mtime:
+ return STATX_MTIME;
+ case time_atime:
+ return STATX_ATIME;
+ case time_btime:
+ return STATX_BTIME;
+ default:
+ abort ();
+ }
+ return 0;
+}
+
+static unsigned int _GL_ATTRIBUTE_PURE
+calc_req_mask (void)
+{
+ unsigned int mask = STATX_MODE;
+
+ if (print_inode)
+ mask |= STATX_INO;
+
+ if (print_block_size)
+ mask |= STATX_BLOCKS;
+
+ if (format == long_format) {
+ mask |= STATX_NLINK | STATX_SIZE | time_type_to_statx ();
+ if (print_owner || print_author)
+ mask |= STATX_UID;
+ if (print_group)
+ mask |= STATX_GID;
+ }
+
+ switch (sort_type)
+ {
+ case sort_none:
+ case sort_name:
+ case sort_version:
+ case sort_extension:
+ break;
+ case sort_time:
+ mask |= time_type_to_statx ();
+ break;
+ case sort_size:
+ mask |= STATX_SIZE;
+ break;
+ default:
+ abort ();
+ }
+
+ return mask;
+}
+
+static int
+do_statx (int fd, const char *name, struct stat *st, int flags,
+ unsigned int mask)
+{
+ struct statx stx;
+ bool want_btime = mask & STATX_BTIME;
+ int ret = statx (fd, name, flags, mask, &stx);
+ if (ret >= 0)
+ {
+ statx_to_stat (&stx, st);
+ /* Since we only need one timestamp type,
+ store birth time in st_mtim. */
+ if (want_btime)
+ {
+ if (stx.stx_mask & STATX_BTIME)
+ st->st_mtim = statx_timestamp_to_timespec (stx.stx_btime);
+ else
+ st->st_mtim.tv_sec = st->st_mtim.tv_nsec = -1;
+ }
+ }
+
+ return ret;
+}
+
+static inline int
+do_stat (const char *name, struct stat *st)
+{
+ return do_statx (AT_FDCWD, name, st, 0, calc_req_mask ());
+}
+
+static inline int
+do_lstat (const char *name, struct stat *st)
+{
+ return do_statx (AT_FDCWD, name, st, AT_SYMLINK_NOFOLLOW, calc_req_mask ());
+}
+
+static inline int
+stat_for_mode (const char *name, struct stat *st)
+{
+ return do_statx (AT_FDCWD, name, st, 0, STATX_MODE);
+}
+
+/* dev+ino should be static, so no need to sync with backing store */
+static inline int
+stat_for_ino (const char *name, struct stat *st)
+{
+ return do_statx (AT_FDCWD, name, st, 0, STATX_INO);
+}
+
+static inline int
+fstat_for_ino (int fd, struct stat *st)
+{
+ return do_statx (fd, "", st, AT_EMPTY_PATH, STATX_INO);
+}
+#else
+static inline int
+do_stat (const char *name, struct stat *st)
+{
+ return stat (name, st);
+}
+
+static inline int
+do_lstat (const char *name, struct stat *st)
+{
+ return lstat (name, st);
+}
+
+static inline int
+stat_for_mode (const char *name, struct stat *st)
+{
+ return stat (name, st);
+}
+
+static inline int
+stat_for_ino (const char *name, struct stat *st)
+{
+ return stat (name, st);
+}
+
+static inline int
+fstat_for_ino (int fd, struct stat *st)
+{
+ return fstat (fd, st);
+}
+#endif
+
+/* Return the address of the first plain %b spec in FMT, or NULL if
+ there is no such spec. %5b etc. do not match, so that user
+ widths/flags are honored. */
+
+static char const * _GL_ATTRIBUTE_PURE
+first_percent_b (char const *fmt)
+{
+ for (; *fmt; fmt++)
+ if (fmt[0] == '%')
+ switch (fmt[1])
+ {
+ case 'b': return fmt;
+ case '%': fmt++; break;
+ }
+ return NULL;
+}
+
+static char RFC3986[256];
+static void
+file_escape_init (void)
+{
+ for (int i = 0; i < 256; i++)
+ RFC3986[i] |= c_isalnum (i) || i == '~' || i == '-' || i == '.' || i == '_';
+}
+
+/* Read the abbreviated month names from the locale, to align them
+ and to determine the max width of the field and to truncate names
+ greater than our max allowed.
+ Note even though this handles multibyte locales correctly
+ it's not restricted to them as single byte locales can have
+ variable width abbreviated months and also precomputing/caching
+ the names was seen to increase the performance of ls significantly. */
+
+/* max number of display cells to use.
+ As of 2018 the abmon for Arabic has entries with width 12.
+ It doesn't make much sense to support wider than this
+ and locales should aim for abmon entries of width <= 5. */
+enum { MAX_MON_WIDTH = 12 };
+/* abformat[RECENT][MON] is the format to use for timestamps with
+ recentness RECENT and month MON. */
+enum { ABFORMAT_SIZE = 128 };
+static char abformat[2][12][ABFORMAT_SIZE];
+/* True if precomputed formats should be used. This can be false if
+ nl_langinfo fails, if a format or month abbreviation is unusually
+ long, or if a month abbreviation contains '%'. */
+static bool use_abformat;
+
+/* Store into ABMON the abbreviated month names, suitably aligned.
+ Return true if successful. */
+
+static bool
+abmon_init (char abmon[12][ABFORMAT_SIZE])
+{
+#ifndef HAVE_NL_LANGINFO
+ return false;
+#else
+ size_t required_mon_width = MAX_MON_WIDTH;
+ size_t curr_max_width;
+ do
+ {
+ curr_max_width = required_mon_width;
+ required_mon_width = 0;
+ for (int i = 0; i < 12; i++)
+ {
+ size_t width = curr_max_width;
+ char const *abbr = nl_langinfo (ABMON_1 + i);
+ if (strchr (abbr, '%'))
+ return false;
+ mbs_align_t alignment = isdigit (to_uchar (*abbr))
+ ? MBS_ALIGN_RIGHT : MBS_ALIGN_LEFT;
+ size_t req = mbsalign (abbr, abmon[i], ABFORMAT_SIZE,
+ &width, alignment, 0);
+ if (! (req < ABFORMAT_SIZE))
+ return false;
+ required_mon_width = MAX (required_mon_width, width);
+ }
+ }
+ while (curr_max_width > required_mon_width);
+
+ return true;
+#endif
+}
+
+/* Initialize ABFORMAT and USE_ABFORMAT. */
+
+static void
+abformat_init (void)
+{
+ char const *pb[2];
+ for (int recent = 0; recent < 2; recent++)
+ pb[recent] = first_percent_b (long_time_format[recent]);
+ if (! (pb[0] || pb[1]))
+ return;
+
+ char abmon[12][ABFORMAT_SIZE];
+ if (! abmon_init (abmon))
+ return;
+
+ for (int recent = 0; recent < 2; recent++)
+ {
+ char const *fmt = long_time_format[recent];
+ for (int i = 0; i < 12; i++)
+ {
+ char *nfmt = abformat[recent][i];
+ int nbytes;
+
+ if (! pb[recent])
+ nbytes = snprintf (nfmt, ABFORMAT_SIZE, "%s", fmt);
+ else
+ {
+ if (! (pb[recent] - fmt <= MIN (ABFORMAT_SIZE, INT_MAX)))
+ return;
+ int prefix_len = pb[recent] - fmt;
+ nbytes = snprintf (nfmt, ABFORMAT_SIZE, "%.*s%s%s",
+ prefix_len, fmt, abmon[i], pb[recent] + 2);
+ }
+
+ if (! (0 <= nbytes && nbytes < ABFORMAT_SIZE))
+ return;
+ }
+ }
+
+ use_abformat = true;
+}
+
+static size_t
+dev_ino_hash (void const *x, size_t table_size)
+{
+ struct dev_ino const *p = x;
+ return (uintmax_t) p->st_ino % table_size;
+}
+
+static bool
+dev_ino_compare (void const *x, void const *y)
+{
+ struct dev_ino const *a = x;
+ struct dev_ino const *b = y;
+ return SAME_INODE (*a, *b) ? true : false;
+}
+
+static void
+dev_ino_free (void *x)
+{
+ free (x);
+}
+
+/* Add the device/inode pair (P->st_dev/P->st_ino) to the set of
+ active directories. Return true if there is already a matching
+ entry in the table. */
+
+static bool
+visit_dir (dev_t dev, ino_t ino)
+{
+ struct dev_ino *ent;
+ struct dev_ino *ent_from_table;
+ bool found_match;
+
+ ent = xmalloc (sizeof *ent);
+ ent->st_ino = ino;
+ ent->st_dev = dev;
+
+ /* Attempt to insert this entry into the table. */
+ ent_from_table = hash_insert (active_dir_set, ent);
+
+ if (ent_from_table == NULL)
+ {
+ /* Insertion failed due to lack of memory. */
+ xalloc_die ();
+ }
+
+ found_match = (ent_from_table != ent);
+
+ if (found_match)
+ {
+ /* ent was not inserted, so free it. */
+ free (ent);
+ }
+
+ return found_match;
+}
+
+static void
+free_pending_ent (struct pending *p)
+{
+ free (p->name);
+ free (p->realname);
+ free (p);
+}
+
+static bool
+is_colored (enum indicator_no type)
+{
+ size_t len = color_indicator[type].len;
+ char const *s = color_indicator[type].string;
+ return ! (len == 0
+ || (len == 1 && STRNCMP_LIT (s, "0") == 0)
+ || (len == 2 && STRNCMP_LIT (s, "00") == 0));
+}
+
+static void
+restore_default_color (void)
+{
+ put_indicator (&color_indicator[C_LEFT]);
+ put_indicator (&color_indicator[C_RIGHT]);
+}
+
+static void
+set_normal_color (void)
+{
+ if (print_with_color && is_colored (C_NORM))
+ {
+ put_indicator (&color_indicator[C_LEFT]);
+ put_indicator (&color_indicator[C_NORM]);
+ put_indicator (&color_indicator[C_RIGHT]);
+ }
+}
+
+/* An ordinary signal was received; arrange for the program to exit. */
+
+static void
+sighandler (int sig)
+{
+ if (! SA_NOCLDSTOP)
+ signal (sig, SIG_IGN);
+ if (! interrupt_signal)
+ interrupt_signal = sig;
+}
+
+/* A SIGTSTP was received; arrange for the program to suspend itself. */
+
+static void
+stophandler (int sig)
+{
+ if (! SA_NOCLDSTOP)
+ signal (sig, stophandler);
+ if (! interrupt_signal)
+ stop_signal_count++;
+}
+
+/* Process any pending signals. If signals are caught, this function
+ should be called periodically. Ideally there should never be an
+ unbounded amount of time when signals are not being processed.
+ Signal handling can restore the default colors, so callers must
+ immediately change colors after invoking this function. */
+
+static void
+process_signals (void)
+{
+ while (interrupt_signal || stop_signal_count)
+ {
+ int sig;
+ int stops;
+ sigset_t oldset;
+
+ if (used_color)
+ restore_default_color ();
+ fflush (stdout);
+
+ sigprocmask (SIG_BLOCK, &caught_signals, &oldset);
+
+ /* Reload interrupt_signal and stop_signal_count, in case a new
+ signal was handled before sigprocmask took effect. */
+ sig = interrupt_signal;
+ stops = stop_signal_count;
+
+ /* SIGTSTP is special, since the application can receive that signal
+ more than once. In this case, don't set the signal handler to the
+ default. Instead, just raise the uncatchable SIGSTOP. */
+ if (stops)
+ {
+ stop_signal_count = stops - 1;
+ sig = SIGSTOP;
+ }
+ else
+ signal (sig, SIG_DFL);
+
+ /* Exit or suspend the program. */
+ raise (sig);
+ sigprocmask (SIG_SETMASK, &oldset, NULL);
+
+ /* If execution reaches here, then the program has been
+ continued (after being suspended). */
+ }
+}
+
+/* Setup signal handlers if INIT is true,
+ otherwise restore to the default. */
+
+static void
+signal_setup (bool init)
+{
+ /* The signals that are trapped, and the number of such signals. */
+ static int const sig[] =
+ {
+ /* This one is handled specially. */
+ SIGTSTP,
+
+ /* The usual suspects. */
+ SIGALRM, SIGHUP, SIGINT, SIGPIPE, SIGQUIT, SIGTERM,
+#ifdef SIGPOLL
+ SIGPOLL,
+#endif
+#ifdef SIGPROF
+ SIGPROF,
+#endif
+#ifdef SIGVTALRM
+ SIGVTALRM,
+#endif
+#ifdef SIGXCPU
+ SIGXCPU,
+#endif
+#ifdef SIGXFSZ
+ SIGXFSZ,
+#endif
+ };
+ enum { nsigs = ARRAY_CARDINALITY (sig) };
+
+#if ! SA_NOCLDSTOP
+ static bool caught_sig[nsigs];
+#endif
+
+ int j;
+
+ if (init)
+ {
+#if SA_NOCLDSTOP
+ struct sigaction act;
+
+ sigemptyset (&caught_signals);
+ for (j = 0; j < nsigs; j++)
+ {
+ sigaction (sig[j], NULL, &act);
+ if (act.sa_handler != SIG_IGN)
+ sigaddset (&caught_signals, sig[j]);
+ }
+
+ act.sa_mask = caught_signals;
+ act.sa_flags = SA_RESTART;
+
+ for (j = 0; j < nsigs; j++)
+ if (sigismember (&caught_signals, sig[j]))
+ {
+ act.sa_handler = sig[j] == SIGTSTP ? stophandler : sighandler;
+ sigaction (sig[j], &act, NULL);
+ }
+#else
+ for (j = 0; j < nsigs; j++)
+ {
+ caught_sig[j] = (signal (sig[j], SIG_IGN) != SIG_IGN);
+ if (caught_sig[j])
+ {
+ signal (sig[j], sig[j] == SIGTSTP ? stophandler : sighandler);
+ siginterrupt (sig[j], 0);
+ }
+ }
+#endif
+ }
+ else /* restore. */
+ {
+#if SA_NOCLDSTOP
+ for (j = 0; j < nsigs; j++)
+ if (sigismember (&caught_signals, sig[j]))
+ signal (sig[j], SIG_DFL);
+#else
+ for (j = 0; j < nsigs; j++)
+ if (caught_sig[j])
+ signal (sig[j], SIG_DFL);
+#endif
+ }
+}
+
+static inline void
+signal_init (void)
+{
+ signal_setup (true);
+}
+
+static inline void
+signal_restore (void)
+{
+ signal_setup (false);
+}
+
+int
+main (int argc, char **argv)
+{
+ int i;
+ struct pending *thispend;
+ int n_files;
+
+ initialize_main (&argc, &argv);
+ set_program_name (argv[0]);
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ initialize_exit_failure (LS_FAILURE);
+ atexit (close_stdout);
+
+ assert (ARRAY_CARDINALITY (color_indicator) + 1
+ == ARRAY_CARDINALITY (indicator_name));
+
+ exit_status = EXIT_SUCCESS;
+ print_dir_name = true;
+ pending_dirs = NULL;
+
+ current_time.tv_sec = TYPE_MINIMUM (time_t);
+ current_time.tv_nsec = -1;
+
+ i = decode_switches (argc, argv);
+
+ if (print_with_color)
+ parse_ls_color ();
+
+ /* Test print_with_color again, because the call to parse_ls_color
+ may have just reset it -- e.g., if LS_COLORS is invalid. */
+ if (directories_first)
+ check_symlink_mode = true;
+ else if (print_with_color)
+ {
+ /* Avoid following symbolic links when possible. */
+ if (is_colored (C_ORPHAN)
+ || (is_colored (C_EXEC) && color_symlink_as_referent)
+ || (is_colored (C_MISSING) && format == long_format))
+ check_symlink_mode = true;
+ }
+
+ if (dereference == DEREF_UNDEFINED)
+ dereference = ((immediate_dirs
+ || indicator_style == classify
+ || format == long_format)
+ ? DEREF_NEVER
+ : DEREF_COMMAND_LINE_SYMLINK_TO_DIR);
+
+ /* When using -R, initialize a data structure we'll use to
+ detect any directory cycles. */
+ if (recursive)
+ {
+ active_dir_set = hash_initialize (INITIAL_TABLE_SIZE, NULL,
+ dev_ino_hash,
+ dev_ino_compare,
+ dev_ino_free);
+ if (active_dir_set == NULL)
+ xalloc_die ();
+
+ obstack_init (&dev_ino_obstack);
+ }
+
+ localtz = tzalloc (getenv ("TZ"));
+
+ format_needs_stat = sort_type == sort_time || sort_type == sort_size
+ || format == long_format
+ || print_scontext
+ || print_block_size;
+ format_needs_type = (! format_needs_stat
+ && (recursive
+ || print_with_color
+ || indicator_style != none
+ || directories_first));
+
+ if (dired)
+ {
+ obstack_init (&dired_obstack);
+ obstack_init (&subdired_obstack);
+ }
+
+ if (print_hyperlink)
+ {
+ file_escape_init ();
+
+ hostname = xgethostname ();
+ /* The hostname is generally ignored,
+ so ignore failures obtaining it. */
+ if (! hostname)
+ hostname = "";
+ }
+
+ cwd_n_alloc = 100;
+ cwd_file = xnmalloc (cwd_n_alloc, sizeof *cwd_file);
+ cwd_n_used = 0;
+
+ clear_files ();
+
+ n_files = argc - i;
+
+ if (n_files <= 0)
+ {
+ if (immediate_dirs)
+ gobble_file (".", directory, NOT_AN_INODE_NUMBER, true, "");
+ else
+ queue_directory (".", NULL, true);
+ }
+ else
+ do
+ gobble_file (argv[i++], unknown, NOT_AN_INODE_NUMBER, true, "");
+ while (i < argc);
+
+ if (cwd_n_used)
+ {
+ sort_files ();
+ if (!immediate_dirs)
+ extract_dirs_from_files (NULL, true);
+ /* 'cwd_n_used' might be zero now. */
+ }
+
+ /* In the following if/else blocks, it is sufficient to test 'pending_dirs'
+ (and not pending_dirs->name) because there may be no markers in the queue
+ at this point. A marker may be enqueued when extract_dirs_from_files is
+ called with a non-empty string or via print_dir. */
+ if (cwd_n_used)
+ {
+ print_current_files ();
+ if (pending_dirs)
+ DIRED_PUTCHAR ('\n');
+ }
+ else if (n_files <= 1 && pending_dirs && pending_dirs->next == 0)
+ print_dir_name = false;
+
+ while (pending_dirs)
+ {
+ thispend = pending_dirs;
+ pending_dirs = pending_dirs->next;
+
+ if (LOOP_DETECT)
+ {
+ if (thispend->name == NULL)
+ {
+ /* thispend->name == NULL means this is a marker entry
+ indicating we've finished processing the directory.
+ Use its dev/ino numbers to remove the corresponding
+ entry from the active_dir_set hash table. */
+ struct dev_ino di = dev_ino_pop ();
+ struct dev_ino *found = hash_delete (active_dir_set, &di);
+ /* ASSERT_MATCHING_DEV_INO (thispend->realname, di); */
+ assert (found);
+ dev_ino_free (found);
+ free_pending_ent (thispend);
+ continue;
+ }
+ }
+
+ print_dir (thispend->name, thispend->realname,
+ thispend->command_line_arg);
+
+ free_pending_ent (thispend);
+ print_dir_name = true;
+ }
+
+ if (print_with_color && used_color)
+ {
+ int j;
+
+ /* Skip the restore when it would be a no-op, i.e.,
+ when left is "\033[" and right is "m". */
+ if (!(color_indicator[C_LEFT].len == 2
+ && memcmp (color_indicator[C_LEFT].string, "\033[", 2) == 0
+ && color_indicator[C_RIGHT].len == 1
+ && color_indicator[C_RIGHT].string[0] == 'm'))
+ restore_default_color ();
+
+ fflush (stdout);
+
+ signal_restore ();
+
+ /* Act on any signals that arrived before the default was restored.
+ This can process signals out of order, but there doesn't seem to
+ be an easy way to do them in order, and the order isn't that
+ important anyway. */
+ for (j = stop_signal_count; j; j--)
+ raise (SIGSTOP);
+ j = interrupt_signal;
+ if (j)
+ raise (j);
+ }
+
+ if (dired)
+ {
+ /* No need to free these since we're about to exit. */
+ dired_dump_obstack ("//DIRED//", &dired_obstack);
+ dired_dump_obstack ("//SUBDIRED//", &subdired_obstack);
+ printf ("//DIRED-OPTIONS// --quoting-style=%s\n",
+ quoting_style_args[get_quoting_style (filename_quoting_options)]);
+ }
+
+ if (LOOP_DETECT)
+ {
+ assert (hash_get_n_entries (active_dir_set) == 0);
+ hash_free (active_dir_set);
+ }
+
+ return exit_status;
+}
+
+/* Set the line length to the value given by SPEC. Return true if
+ successful. 0 means no limit on line length. */
+
+static bool
+set_line_length (char const *spec)
+{
+ uintmax_t val;
+
+ /* Treat too-large values as if they were SIZE_MAX, which is
+ effectively infinity. */
+ switch (xstrtoumax (spec, NULL, 0, &val, ""))
+ {
+ case LONGINT_OK:
+ line_length = MIN (val, SIZE_MAX);
+ return true;
+
+ case LONGINT_OVERFLOW:
+ line_length = SIZE_MAX;
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+/* Set all the option flags according to the switches specified.
+ Return the index of the first non-option argument. */
+
+static int
+decode_switches (int argc, char **argv)
+{
+ char *time_style_option = NULL;
+
+ bool sort_type_specified = false;
+ bool kibibytes_specified = false;
+
+ qmark_funny_chars = false;
+
+ /* initialize all switches to default settings */
+
+ switch (ls_mode)
+ {
+ case LS_MULTI_COL:
+ /* This is for the 'dir' program. */
+ format = many_per_line;
+ set_quoting_style (NULL, escape_quoting_style);
+ break;
+
+ case LS_LONG_FORMAT:
+ /* This is for the 'vdir' program. */
+ format = long_format;
+ set_quoting_style (NULL, escape_quoting_style);
+ break;
+
+ case LS_LS:
+ /* This is for the 'ls' program. */
+ if (isatty (STDOUT_FILENO))
+ {
+ format = many_per_line;
+ set_quoting_style (NULL, shell_escape_quoting_style);
+ /* See description of qmark_funny_chars, above. */
+ qmark_funny_chars = true;
+ }
+ else
+ {
+ format = one_per_line;
+ qmark_funny_chars = false;
+ }
+ break;
+
+ default:
+ abort ();
+ }
+
+ time_type = time_mtime;
+ sort_type = sort_name;
+ sort_reverse = false;
+ numeric_ids = false;
+ print_block_size = false;
+ indicator_style = none;
+ print_inode = false;
+ dereference = DEREF_UNDEFINED;
+ recursive = false;
+ immediate_dirs = false;
+ ignore_mode = IGNORE_DEFAULT;
+ ignore_patterns = NULL;
+ hide_patterns = NULL;
+ print_scontext = false;
+
+ getenv_quoting_style ();
+
+ line_length = 80;
+ {
+ char const *p = getenv ("COLUMNS");
+ if (p && *p && ! set_line_length (p))
+ error (0, 0,
+ _("ignoring invalid width in environment variable COLUMNS: %s"),
+ quote (p));
+ }
+
+#ifdef TIOCGWINSZ
+ {
+ struct winsize ws;
+
+ if (ioctl (STDOUT_FILENO, TIOCGWINSZ, &ws) != -1
+ && 0 < ws.ws_col && ws.ws_col == (size_t) ws.ws_col)
+ line_length = ws.ws_col;
+ }
+#endif
+
+ {
+ char const *p = getenv ("TABSIZE");
+ tabsize = 8;
+ if (p)
+ {
+ uintmax_t tmp;
+ if (xstrtoumax (p, NULL, 0, &tmp, "") == LONGINT_OK
+ && tmp <= SIZE_MAX)
+ tabsize = tmp;
+ else
+ error (0, 0,
+ _("ignoring invalid tab size in environment variable TABSIZE:"
+ " %s"),
+ quote (p));
+ }
+ }
+
+ while (true)
+ {
+ int oi = -1;
+ int c = getopt_long (argc, argv,
+ "abcdfghiklmnopqrstuvw:xABCDFGHI:LNQRST:UXZ1",
+ long_options, &oi);
+ if (c == -1)
+ break;
+
+ switch (c)
+ {
+ case 'a':
+ ignore_mode = IGNORE_MINIMAL;
+ break;
+
+ case 'b':
+ set_quoting_style (NULL, escape_quoting_style);
+ break;
+
+ case 'c':
+ time_type = time_ctime;
+ break;
+
+ case 'd':
+ immediate_dirs = true;
+ break;
+
+ case 'f':
+ /* Same as enabling -a -U and disabling -l -s. */
+ ignore_mode = IGNORE_MINIMAL;
+ sort_type = sort_none;
+ sort_type_specified = true;
+ /* disable -l */
+ if (format == long_format)
+ format = (isatty (STDOUT_FILENO) ? many_per_line : one_per_line);
+ print_block_size = false; /* disable -s */
+ print_with_color = false; /* disable --color */
+ print_hyperlink = false; /* disable --hyperlink */
+ break;
+
+ case FILE_TYPE_INDICATOR_OPTION: /* --file-type */
+ indicator_style = file_type;
+ break;
+
+ case 'g':
+ format = long_format;
+ print_owner = false;
+ break;
+
+ case 'h':
+ file_human_output_opts = human_output_opts =
+ human_autoscale | human_SI | human_base_1024;
+ file_output_block_size = output_block_size = 1;
+ break;
+
+ case 'i':
+ print_inode = true;
+ break;
+
+ case 'k':
+ kibibytes_specified = true;
+ break;
+
+ case 'l':
+ format = long_format;
+ break;
+
+ case 'm':
+ format = with_commas;
+ break;
+
+ case 'n':
+ numeric_ids = true;
+ format = long_format;
+ break;
+
+ case 'o': /* Just like -l, but don't display group info. */
+ format = long_format;
+ print_group = false;
+ break;
+
+ case 'p':
+ indicator_style = slash;
+ break;
+
+ case 'q':
+ qmark_funny_chars = true;
+ break;
+
+ case 'r':
+ sort_reverse = true;
+ break;
+
+ case 's':
+ print_block_size = true;
+ break;
+
+ case 't':
+ sort_type = sort_time;
+ sort_type_specified = true;
+ break;
+
+ case 'u':
+ time_type = time_atime;
+ break;
+
+ case 'v':
+ sort_type = sort_version;
+ sort_type_specified = true;
+ break;
+
+ case 'w':
+ if (! set_line_length (optarg))
+ die (LS_FAILURE, 0, "%s: %s", _("invalid line width"),
+ quote (optarg));
+ break;
+
+ case 'x':
+ format = horizontal;
+ break;
+
+ case 'A':
+ ignore_mode = IGNORE_DOT_AND_DOTDOT;
+ break;
+
+ case 'B':
+ add_ignore_pattern ("*~");
+ add_ignore_pattern (".*~");
+ break;
+
+ case 'C':
+ format = many_per_line;
+ break;
+
+ case 'D':
+ dired = true;
+ break;
+
+ case 'F':
+ indicator_style = classify;
+ break;
+
+ case 'G': /* inhibit display of group info */
+ print_group = false;
+ break;
+
+ case 'H':
+ dereference = DEREF_COMMAND_LINE_ARGUMENTS;
+ break;
+
+ case DEREFERENCE_COMMAND_LINE_SYMLINK_TO_DIR_OPTION:
+ dereference = DEREF_COMMAND_LINE_SYMLINK_TO_DIR;
+ break;
+
+ case 'I':
+ add_ignore_pattern (optarg);
+ break;
+
+ case 'L':
+ dereference = DEREF_ALWAYS;
+ break;
+
+ case 'N':
+ set_quoting_style (NULL, literal_quoting_style);
+ break;
+
+ case 'Q':
+ set_quoting_style (NULL, c_quoting_style);
+ break;
+
+ case 'R':
+ recursive = true;
+ break;
+
+ case 'S':
+ sort_type = sort_size;
+ sort_type_specified = true;
+ break;
+
+ case 'T':
+ tabsize = xnumtoumax (optarg, 0, 0, SIZE_MAX, "",
+ _("invalid tab size"), LS_FAILURE);
+ break;
+
+ case 'U':
+ sort_type = sort_none;
+ sort_type_specified = true;
+ break;
+
+ case 'X':
+ sort_type = sort_extension;
+ sort_type_specified = true;
+ break;
+
+ case '1':
+ /* -1 has no effect after -l. */
+ if (format != long_format)
+ format = one_per_line;
+ break;
+
+ case AUTHOR_OPTION:
+ print_author = true;
+ break;
+
+ case HIDE_OPTION:
+ {
+ struct ignore_pattern *hide = xmalloc (sizeof *hide);
+ hide->pattern = optarg;
+ hide->next = hide_patterns;
+ hide_patterns = hide;
+ }
+ break;
+
+ case SORT_OPTION:
+ sort_type = XARGMATCH ("--sort", optarg, sort_args, sort_types);
+ sort_type_specified = true;
+ break;
+
+ case GROUP_DIRECTORIES_FIRST_OPTION:
+ directories_first = true;
+ break;
+
+ case TIME_OPTION:
+ time_type = XARGMATCH ("--time", optarg, time_args, time_types);
+ break;
+
+ case FORMAT_OPTION:
+ format = XARGMATCH ("--format", optarg, format_args, format_types);
+ break;
+
+ case FULL_TIME_OPTION:
+ format = long_format;
+ time_style_option = bad_cast ("full-iso");
+ break;
+
+ case COLOR_OPTION:
+ {
+ int i;
+ if (optarg)
+ i = XARGMATCH ("--color", optarg, when_args, when_types);
+ else
+ /* Using --color with no argument is equivalent to using
+ --color=always. */
+ i = when_always;
+
+ print_with_color = (i == when_always
+ || (i == when_if_tty
+ && isatty (STDOUT_FILENO)));
+
+ if (print_with_color)
+ {
+ /* Don't use TAB characters in output. Some terminal
+ emulators can't handle the combination of tabs and
+ color codes on the same line. */
+ tabsize = 0;
+ }
+ break;
+ }
+
+ case HYPERLINK_OPTION:
+ {
+ int i;
+ if (optarg)
+ i = XARGMATCH ("--hyperlink", optarg, when_args, when_types);
+ else
+ /* Using --hyperlink with no argument is equivalent to using
+ --hyperlink=always. */
+ i = when_always;
+
+ print_hyperlink = (i == when_always
+ || (i == when_if_tty
+ && isatty (STDOUT_FILENO)));
+ break;
+ }
+
+ case INDICATOR_STYLE_OPTION:
+ indicator_style = XARGMATCH ("--indicator-style", optarg,
+ indicator_style_args,
+ indicator_style_types);
+ break;
+
+ case QUOTING_STYLE_OPTION:
+ set_quoting_style (NULL,
+ XARGMATCH ("--quoting-style", optarg,
+ quoting_style_args,
+ quoting_style_vals));
+ break;
+
+ case TIME_STYLE_OPTION:
+ time_style_option = optarg;
+ break;
+
+ case SHOW_CONTROL_CHARS_OPTION:
+ qmark_funny_chars = false;
+ break;
+
+ case BLOCK_SIZE_OPTION:
+ {
+ enum strtol_error e = human_options (optarg, &human_output_opts,
+ &output_block_size);
+ if (e != LONGINT_OK)
+ xstrtol_fatal (e, oi, 0, long_options, optarg);
+ file_human_output_opts = human_output_opts;
+ file_output_block_size = output_block_size;
+ }
+ break;
+
+ case SI_OPTION:
+ file_human_output_opts = human_output_opts =
+ human_autoscale | human_SI;
+ file_output_block_size = output_block_size = 1;
+ break;
+
+ case 'Z':
+ print_scontext = true;
+ break;
+
+ case_GETOPT_HELP_CHAR;
+
+ case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+
+ default:
+ usage (LS_FAILURE);
+ }
+ }
+
+ if (! output_block_size)
+ {
+ char const *ls_block_size = getenv ("LS_BLOCK_SIZE");
+ human_options (ls_block_size,
+ &human_output_opts, &output_block_size);
+ if (ls_block_size || getenv ("BLOCK_SIZE"))
+ {
+ file_human_output_opts = human_output_opts;
+ file_output_block_size = output_block_size;
+ }
+ if (kibibytes_specified)
+ {
+ human_output_opts = 0;
+ output_block_size = 1024;
+ }
+ }
+
+ /* Determine the max possible number of display columns. */
+ max_idx = line_length / MIN_COLUMN_WIDTH;
+ /* Account for first display column not having a separator,
+ or line_lengths shorter than MIN_COLUMN_WIDTH. */
+ max_idx += line_length % MIN_COLUMN_WIDTH != 0;
+
+ enum quoting_style qs = get_quoting_style (NULL);
+ align_variable_outer_quotes = format != with_commas
+ && format != one_per_line
+ && (line_length || format == long_format)
+ && (qs == shell_quoting_style
+ || qs == shell_escape_quoting_style
+ || qs == c_maybe_quoting_style);
+ filename_quoting_options = clone_quoting_options (NULL);
+ if (qs == escape_quoting_style)
+ set_char_quoting (filename_quoting_options, ' ', 1);
+ if (file_type <= indicator_style)
+ {
+ char const *p;
+ for (p = &"*=>@|"[indicator_style - file_type]; *p; p++)
+ set_char_quoting (filename_quoting_options, *p, 1);
+ }
+
+ dirname_quoting_options = clone_quoting_options (NULL);
+ set_char_quoting (dirname_quoting_options, ':', 1);
+
+ /* --dired is meaningful only with --format=long (-l).
+ Otherwise, ignore it. FIXME: warn about this?
+ Alternatively, make --dired imply --format=long? */
+ if (dired && (format != long_format || print_hyperlink))
+ dired = false;
+
+ /* If -c or -u is specified and not -l (or any other option that implies -l),
+ and no sort-type was specified, then sort by the ctime (-c) or atime (-u).
+ The behavior of ls when using either -c or -u but with neither -l nor -t
+ appears to be unspecified by POSIX. So, with GNU ls, '-u' alone means
+ sort by atime (this is the one that's not specified by the POSIX spec),
+ -lu means show atime and sort by name, -lut means show atime and sort
+ by atime. */
+
+ if ((time_type == time_ctime || time_type == time_atime
+ || time_type == time_btime)
+ && !sort_type_specified && format != long_format)
+ {
+ sort_type = sort_time;
+ }
+
+ if (format == long_format)
+ {
+ char *style = time_style_option;
+ static char const posix_prefix[] = "posix-";
+
+ if (! style)
+ if (! (style = getenv ("TIME_STYLE")))
+ style = bad_cast ("locale");
+
+ while (STREQ_LEN (style, posix_prefix, sizeof posix_prefix - 1))
+ {
+ if (! hard_locale (LC_TIME))
+ return optind;
+ style += sizeof posix_prefix - 1;
+ }
+
+ if (*style == '+')
+ {
+ char *p0 = style + 1;
+ char *p1 = strchr (p0, '\n');
+ if (! p1)
+ p1 = p0;
+ else
+ {
+ if (strchr (p1 + 1, '\n'))
+ die (LS_FAILURE, 0, _("invalid time style format %s"),
+ quote (p0));
+ *p1++ = '\0';
+ }
+ long_time_format[0] = p0;
+ long_time_format[1] = p1;
+ }
+ else
+ {
+ ptrdiff_t res = argmatch (style, time_style_args,
+ (char const *) time_style_types,
+ sizeof (*time_style_types));
+ if (res < 0)
+ {
+ /* This whole block used to be a simple use of XARGMATCH.
+ but that didn't print the "posix-"-prefixed variants or
+ the "+"-prefixed format string option upon failure. */
+ argmatch_invalid ("time style", style, res);
+
+ /* The following is a manual expansion of argmatch_valid,
+ but with the added "+ ..." description and the [posix-]
+ prefixes prepended. Note that this simplification works
+ only because all four existing time_style_types values
+ are distinct. */
+ fputs (_("Valid arguments are:\n"), stderr);
+ char const *const *p = time_style_args;
+ while (*p)
+ fprintf (stderr, " - [posix-]%s\n", *p++);
+ fputs (_(" - +FORMAT (e.g., +%H:%M) for a 'date'-style"
+ " format\n"), stderr);
+ usage (LS_FAILURE);
+ }
+ switch (res)
+ {
+ case full_iso_time_style:
+ long_time_format[0] = long_time_format[1] =
+ "%Y-%m-%d %H:%M:%S.%N %z";
+ break;
+
+ case long_iso_time_style:
+ long_time_format[0] = long_time_format[1] = "%Y-%m-%d %H:%M";
+ break;
+
+ case iso_time_style:
+ long_time_format[0] = "%Y-%m-%d ";
+ long_time_format[1] = "%m-%d %H:%M";
+ break;
+
+ case locale_time_style:
+ if (hard_locale (LC_TIME))
+ {
+ for (int i = 0; i < 2; i++)
+ long_time_format[i] =
+ dcgettext (NULL, long_time_format[i], LC_TIME);
+ }
+ }
+ }
+
+ abformat_init ();
+ }
+
+ return optind;
+}
+
+/* Parse a string as part of the LS_COLORS variable; this may involve
+ decoding all kinds of escape characters. If equals_end is set an
+ unescaped equal sign ends the string, otherwise only a : or \0
+ does. Set *OUTPUT_COUNT to the number of bytes output. Return
+ true if successful.
+
+ The resulting string is *not* null-terminated, but may contain
+ embedded nulls.
+
+ Note that both dest and src are char **; on return they point to
+ the first free byte after the array and the character that ended
+ the input string, respectively. */
+
+static bool
+get_funky_string (char **dest, const char **src, bool equals_end,
+ size_t *output_count)
+{
+ char num; /* For numerical codes */
+ size_t count; /* Something to count with */
+ enum {
+ ST_GND, ST_BACKSLASH, ST_OCTAL, ST_HEX, ST_CARET, ST_END, ST_ERROR
+ } state;
+ const char *p;
+ char *q;
+
+ p = *src; /* We don't want to double-indirect */
+ q = *dest; /* the whole darn time. */
+
+ count = 0; /* No characters counted in yet. */
+ num = 0;
+
+ state = ST_GND; /* Start in ground state. */
+ while (state < ST_END)
+ {
+ switch (state)
+ {
+ case ST_GND: /* Ground state (no escapes) */
+ switch (*p)
+ {
+ case ':':
+ case '\0':
+ state = ST_END; /* End of string */
+ break;
+ case '\\':
+ state = ST_BACKSLASH; /* Backslash escape sequence */
+ ++p;
+ break;
+ case '^':
+ state = ST_CARET; /* Caret escape */
+ ++p;
+ break;
+ case '=':
+ if (equals_end)
+ {
+ state = ST_END; /* End */
+ break;
+ }
+ FALLTHROUGH;
+ default:
+ *(q++) = *(p++);
+ ++count;
+ break;
+ }
+ break;
+
+ case ST_BACKSLASH: /* Backslash escaped character */
+ switch (*p)
+ {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ state = ST_OCTAL; /* Octal sequence */
+ num = *p - '0';
+ break;
+ case 'x':
+ case 'X':
+ state = ST_HEX; /* Hex sequence */
+ num = 0;
+ break;
+ case 'a': /* Bell */
+ num = '\a';
+ break;
+ case 'b': /* Backspace */
+ num = '\b';
+ break;
+ case 'e': /* Escape */
+ num = 27;
+ break;
+ case 'f': /* Form feed */
+ num = '\f';
+ break;
+ case 'n': /* Newline */
+ num = '\n';
+ break;
+ case 'r': /* Carriage return */
+ num = '\r';
+ break;
+ case 't': /* Tab */
+ num = '\t';
+ break;
+ case 'v': /* Vtab */
+ num = '\v';
+ break;
+ case '?': /* Delete */
+ num = 127;
+ break;
+ case '_': /* Space */
+ num = ' ';
+ break;
+ case '\0': /* End of string */
+ state = ST_ERROR; /* Error! */
+ break;
+ default: /* Escaped character like \ ^ : = */
+ num = *p;
+ break;
+ }
+ if (state == ST_BACKSLASH)
+ {
+ *(q++) = num;
+ ++count;
+ state = ST_GND;
+ }
+ ++p;
+ break;
+
+ case ST_OCTAL: /* Octal sequence */
+ if (*p < '0' || *p > '7')
+ {
+ *(q++) = num;
+ ++count;
+ state = ST_GND;
+ }
+ else
+ num = (num << 3) + (*(p++) - '0');
+ break;
+
+ case ST_HEX: /* Hex sequence */
+ switch (*p)
+ {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ num = (num << 4) + (*(p++) - '0');
+ break;
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'e':
+ case 'f':
+ num = (num << 4) + (*(p++) - 'a') + 10;
+ break;
+ case 'A':
+ case 'B':
+ case 'C':
+ case 'D':
+ case 'E':
+ case 'F':
+ num = (num << 4) + (*(p++) - 'A') + 10;
+ break;
+ default:
+ *(q++) = num;
+ ++count;
+ state = ST_GND;
+ break;
+ }
+ break;
+
+ case ST_CARET: /* Caret escape */
+ state = ST_GND; /* Should be the next state... */
+ if (*p >= '@' && *p <= '~')
+ {
+ *(q++) = *(p++) & 037;
+ ++count;
+ }
+ else if (*p == '?')
+ {
+ *(q++) = 127;
+ ++count;
+ }
+ else
+ state = ST_ERROR;
+ break;
+
+ default:
+ abort ();
+ }
+ }
+
+ *dest = q;
+ *src = p;
+ *output_count = count;
+
+ return state != ST_ERROR;
+}
+
+enum parse_state
+ {
+ PS_START = 1,
+ PS_2,
+ PS_3,
+ PS_4,
+ PS_DONE,
+ PS_FAIL
+ };
+
+
+/* Check if the content of TERM is a valid name in dircolors. */
+
+static bool
+known_term_type (void)
+{
+ char const *term = getenv ("TERM");
+ if (! term || ! *term)
+ return false;
+
+ char const *line = G_line;
+ while (line - G_line < sizeof (G_line))
+ {
+ if (STRNCMP_LIT (line, "TERM ") == 0)
+ {
+ if (fnmatch (line + 5, term, 0) == 0)
+ return true;
+ }
+ line += strlen (line) + 1;
+ }
+
+ return false;
+}
+
+static void
+parse_ls_color (void)
+{
+ const char *p; /* Pointer to character being parsed */
+ char *buf; /* color_buf buffer pointer */
+ int ind_no; /* Indicator number */
+ char label[3]; /* Indicator label */
+ struct color_ext_type *ext; /* Extension we are working on */
+
+ if ((p = getenv ("LS_COLORS")) == NULL || *p == '\0')
+ {
+ /* LS_COLORS takes precedence, but if that's not set then
+ honor the COLORTERM and TERM env variables so that
+ we only go with the internal ANSI color codes if the
+ former is non empty or the latter is set to a known value. */
+ char const *colorterm = getenv ("COLORTERM");
+ if (! (colorterm && *colorterm) && ! known_term_type ())
+ print_with_color = false;
+ return;
+ }
+
+ ext = NULL;
+ strcpy (label, "??");
+
+ /* This is an overly conservative estimate, but any possible
+ LS_COLORS string will *not* generate a color_buf longer than
+ itself, so it is a safe way of allocating a buffer in
+ advance. */
+ buf = color_buf = xstrdup (p);
+
+ enum parse_state state = PS_START;
+ while (true)
+ {
+ switch (state)
+ {
+ case PS_START: /* First label character */
+ switch (*p)
+ {
+ case ':':
+ ++p;
+ break;
+
+ case '*':
+ /* Allocate new extension block and add to head of
+ linked list (this way a later definition will
+ override an earlier one, which can be useful for
+ having terminal-specific defs override global). */
+
+ ext = xmalloc (sizeof *ext);
+ ext->next = color_ext_list;
+ color_ext_list = ext;
+
+ ++p;
+ ext->ext.string = buf;
+
+ state = (get_funky_string (&buf, &p, true, &ext->ext.len)
+ ? PS_4 : PS_FAIL);
+ break;
+
+ case '\0':
+ state = PS_DONE; /* Done! */
+ goto done;
+
+ default: /* Assume it is file type label */
+ label[0] = *(p++);
+ state = PS_2;
+ break;
+ }
+ break;
+
+ case PS_2: /* Second label character */
+ if (*p)
+ {
+ label[1] = *(p++);
+ state = PS_3;
+ }
+ else
+ state = PS_FAIL; /* Error */
+ break;
+
+ case PS_3: /* Equal sign after indicator label */
+ state = PS_FAIL; /* Assume failure... */
+ if (*(p++) == '=')/* It *should* be... */
+ {
+ for (ind_no = 0; indicator_name[ind_no] != NULL; ++ind_no)
+ {
+ if (STREQ (label, indicator_name[ind_no]))
+ {
+ color_indicator[ind_no].string = buf;
+ state = (get_funky_string (&buf, &p, false,
+ &color_indicator[ind_no].len)
+ ? PS_START : PS_FAIL);
+ break;
+ }
+ }
+ if (state == PS_FAIL)
+ error (0, 0, _("unrecognized prefix: %s"), quote (label));
+ }
+ break;
+
+ case PS_4: /* Equal sign after *.ext */
+ if (*(p++) == '=')
+ {
+ ext->seq.string = buf;
+ state = (get_funky_string (&buf, &p, false, &ext->seq.len)
+ ? PS_START : PS_FAIL);
+ }
+ else
+ state = PS_FAIL;
+ break;
+
+ case PS_FAIL:
+ goto done;
+
+ default:
+ abort ();
+ }
+ }
+ done:
+
+ if (state == PS_FAIL)
+ {
+ struct color_ext_type *e;
+ struct color_ext_type *e2;
+
+ error (0, 0,
+ _("unparsable value for LS_COLORS environment variable"));
+ free (color_buf);
+ for (e = color_ext_list; e != NULL; /* empty */)
+ {
+ e2 = e;
+ e = e->next;
+ free (e2);
+ }
+ print_with_color = false;
+ }
+
+ if (color_indicator[C_LINK].len == 6
+ && !STRNCMP_LIT (color_indicator[C_LINK].string, "target"))
+ color_symlink_as_referent = true;
+}
+
+/* Set the quoting style default if the environment variable
+ QUOTING_STYLE is set. */
+
+static void
+getenv_quoting_style (void)
+{
+ char const *q_style = getenv ("QUOTING_STYLE");
+ if (q_style)
+ {
+ int i = ARGMATCH (q_style, quoting_style_args, quoting_style_vals);
+ if (0 <= i)
+ set_quoting_style (NULL, quoting_style_vals[i]);
+ else
+ error (0, 0,
+ _("ignoring invalid value of environment variable QUOTING_STYLE: %s"),
+ quote (q_style));
+ }
+}
+
+/* Set the exit status to report a failure. If SERIOUS, it is a
+ serious failure; otherwise, it is merely a minor problem. */
+
+static void
+set_exit_status (bool serious)
+{
+ if (serious)
+ exit_status = LS_FAILURE;
+ else if (exit_status == EXIT_SUCCESS)
+ exit_status = LS_MINOR_PROBLEM;
+}
+
+/* Assuming a failure is serious if SERIOUS, use the printf-style
+ MESSAGE to report the failure to access a file named FILE. Assume
+ errno is set appropriately for the failure. */
+
+static void
+file_failure (bool serious, char const *message, char const *file)
+{
+ error (0, errno, message, quoteaf (file));
+ set_exit_status (serious);
+}
+
+/* Request that the directory named NAME have its contents listed later.
+ If REALNAME is nonzero, it will be used instead of NAME when the
+ directory name is printed. This allows symbolic links to directories
+ to be treated as regular directories but still be listed under their
+ real names. NAME == NULL is used to insert a marker entry for the
+ directory named in REALNAME.
+ If NAME is non-NULL, we use its dev/ino information to save
+ a call to stat -- when doing a recursive (-R) traversal.
+ COMMAND_LINE_ARG means this directory was mentioned on the command line. */
+
+static void
+queue_directory (char const *name, char const *realname, bool command_line_arg)
+{
+ struct pending *new = xmalloc (sizeof *new);
+ new->realname = realname ? xstrdup (realname) : NULL;
+ new->name = name ? xstrdup (name) : NULL;
+ new->command_line_arg = command_line_arg;
+ new->next = pending_dirs;
+ pending_dirs = new;
+}
+
+/* Read directory NAME, and list the files in it.
+ If REALNAME is nonzero, print its name instead of NAME;
+ this is used for symbolic links to directories.
+ COMMAND_LINE_ARG means this directory was mentioned on the command line. */
+
+static void
+print_dir (char const *name, char const *realname, bool command_line_arg)
+{
+ DIR *dirp;
+ struct dirent *next;
+ uintmax_t total_blocks = 0;
+ static bool first = true;
+ bool found_any_entries = false;
+
+ errno = 0;
+ dirp = opendir (name);
+ if (!dirp)
+ {
+ file_failure (command_line_arg, _("cannot open directory %s"), name);
+ return;
+ }
+
+ if (LOOP_DETECT)
+ {
+ struct stat dir_stat;
+ int fd = dirfd (dirp);
+
+ /* If dirfd failed, endure the overhead of stat'ing by path */
+ if ((0 <= fd
+ ? fstat_for_ino (fd, &dir_stat)
+ : stat_for_ino (name, &dir_stat)) < 0)
+ {
+ file_failure (command_line_arg,
+ _("cannot determine device and inode of %s"), name);
+ closedir (dirp);
+ return;
+ }
+
+ /* If we've already visited this dev/inode pair, warn that
+ we've found a loop, and do not process this directory. */
+ if (visit_dir (dir_stat.st_dev, dir_stat.st_ino))
+ {
+ error (0, 0, _("%s: not listing already-listed directory"),
+ quotef (name));
+ closedir (dirp);
+ set_exit_status (true);
+ return;
+ }
+
+ dev_ino_push (dir_stat.st_dev, dir_stat.st_ino);
+ }
+
+ clear_files ();
+
+ if (recursive || print_dir_name)
+ {
+ if (!first)
+ DIRED_PUTCHAR ('\n');
+ first = false;
+ DIRED_INDENT ();
+
+ char *absolute_name = NULL;
+ if (print_hyperlink)
+ {
+ absolute_name = canonicalize_filename_mode (name, CAN_MISSING);
+ if (! absolute_name)
+ file_failure (command_line_arg,
+ _("error canonicalizing %s"), name);
+ }
+ quote_name (realname ? realname : name, dirname_quoting_options, -1,
+ NULL, true, &subdired_obstack, absolute_name);
+
+ free (absolute_name);
+
+ DIRED_FPUTS_LITERAL (":\n", stdout);
+ }
+
+ /* Read the directory entries, and insert the subfiles into the 'cwd_file'
+ table. */
+
+ while (1)
+ {
+ /* Set errno to zero so we can distinguish between a readdir failure
+ and when readdir simply finds that there are no more entries. */
+ errno = 0;
+ next = readdir (dirp);
+ if (next)
+ {
+ found_any_entries = true;
+ if (! file_ignored (next->d_name))
+ {
+ enum filetype type = unknown;
+
+#if HAVE_STRUCT_DIRENT_D_TYPE
+ switch (next->d_type)
+ {
+ case DT_BLK: type = blockdev; break;
+ case DT_CHR: type = chardev; break;
+ case DT_DIR: type = directory; break;
+ case DT_FIFO: type = fifo; break;
+ case DT_LNK: type = symbolic_link; break;
+ case DT_REG: type = normal; break;
+ case DT_SOCK: type = sock; break;
+# ifdef DT_WHT
+ case DT_WHT: type = whiteout; break;
+# endif
+ }
+#endif
+ total_blocks += gobble_file (next->d_name, type,
+ RELIABLE_D_INO (next),
+ false, name);
+
+ /* In this narrow case, print out each name right away, so
+ ls uses constant memory while processing the entries of
+ this directory. Useful when there are many (millions)
+ of entries in a directory. */
+ if (format == one_per_line && sort_type == sort_none
+ && !print_block_size && !recursive)
+ {
+ /* We must call sort_files in spite of
+ "sort_type == sort_none" for its initialization
+ of the sorted_file vector. */
+ sort_files ();
+ print_current_files ();
+ clear_files ();
+ }
+ }
+ }
+ else if (errno != 0)
+ {
+ file_failure (command_line_arg, _("reading directory %s"), name);
+ if (errno != EOVERFLOW)
+ break;
+ }
+#ifdef __linux__
+ else if (! found_any_entries)
+ {
+ /* If readdir finds no directory entries at all, not even "." or
+ "..", then double check that the directory exists. */
+#if defined(__x86_64__) || \
+ defined(__aarch64__) || \
+ defined(__powerpc64__) || \
+ defined(__sparc__) && defined(__arch64__) || \
+ defined(__riscv_xlen) && __riscv_xlen == 64
+ if (syscall (SYS_getdents64, dirfd (dirp), NULL, 0) == -1
+ && errno != EINVAL)
+#else
+ if (syscall (SYS_getdents, dirfd (dirp), NULL, 0) == -1
+ && errno != EINVAL)
+#endif
+ {
+ /* We exclude EINVAL as that pertains to buffer handling,
+ and we've passed NULL as the buffer for simplicity.
+ ENOENT is returned if appropriate before buffer handling. */
+ file_failure (command_line_arg, _("reading directory %s"), name);
+ }
+ break;
+ }
+#endif
+ else
+ break;
+
+ /* When processing a very large directory, and since we've inhibited
+ interrupts, this loop would take so long that ls would be annoyingly
+ uninterruptible. This ensures that it handles signals promptly. */
+ process_signals ();
+ }
+
+ if (closedir (dirp) != 0)
+ {
+ file_failure (command_line_arg, _("closing directory %s"), name);
+ /* Don't return; print whatever we got. */
+ }
+
+ /* Sort the directory contents. */
+ sort_files ();
+
+ /* If any member files are subdirectories, perhaps they should have their
+ contents listed rather than being mentioned here as files. */
+
+ if (recursive)
+ extract_dirs_from_files (name, false);
+
+ if (format == long_format || print_block_size)
+ {
+ const char *p;
+ char buf[LONGEST_HUMAN_READABLE + 1];
+
+ DIRED_INDENT ();
+ p = _("total");
+ DIRED_FPUTS (p, stdout, strlen (p));
+ DIRED_PUTCHAR (' ');
+ p = human_readable (total_blocks, buf, human_output_opts,
+ ST_NBLOCKSIZE, output_block_size);
+ DIRED_FPUTS (p, stdout, strlen (p));
+ DIRED_PUTCHAR ('\n');
+ }
+
+ if (cwd_n_used)
+ print_current_files ();
+}
+
+/* Add 'pattern' to the list of patterns for which files that match are
+ not listed. */
+
+static void
+add_ignore_pattern (const char *pattern)
+{
+ struct ignore_pattern *ignore;
+
+ ignore = xmalloc (sizeof *ignore);
+ ignore->pattern = pattern;
+ /* Add it to the head of the linked list. */
+ ignore->next = ignore_patterns;
+ ignore_patterns = ignore;
+}
+
+/* Return true if one of the PATTERNS matches FILE. */
+
+static bool
+patterns_match (struct ignore_pattern const *patterns, char const *file)
+{
+ struct ignore_pattern const *p;
+ for (p = patterns; p; p = p->next)
+ if (fnmatch (p->pattern, file, FNM_PERIOD) == 0)
+ return true;
+ return false;
+}
+
+/* Return true if FILE should be ignored. */
+
+static bool
+file_ignored (char const *name)
+{
+ return ((ignore_mode != IGNORE_MINIMAL
+ && name[0] == '.'
+ && (ignore_mode == IGNORE_DEFAULT || ! name[1 + (name[1] == '.')]))
+ || (ignore_mode == IGNORE_DEFAULT
+ && patterns_match (hide_patterns, name))
+ || patterns_match (ignore_patterns, name));
+}
+
+/* POSIX requires that a file size be printed without a sign, even
+ when negative. Assume the typical case where negative sizes are
+ actually positive values that have wrapped around. */
+
+static uintmax_t
+unsigned_file_size (off_t size)
+{
+ return size + (size < 0) * ((uintmax_t) OFF_T_MAX - OFF_T_MIN + 1);
+}
+
+#ifdef HAVE_CAP
+/* Return true if NAME has a capability (see linux/capability.h) */
+static bool
+has_capability (char const *name)
+{
+ char *result;
+ bool has_cap;
+
+ cap_t cap_d = cap_get_file (name);
+ if (cap_d == NULL)
+ return false;
+
+ result = cap_to_text (cap_d, NULL);
+ cap_free (cap_d);
+ if (!result)
+ return false;
+
+ /* check if human-readable capability string is empty */
+ has_cap = !!*result;
+
+ cap_free (result);
+ return has_cap;
+}
+#else
+static bool
+has_capability (char const *name _GL_UNUSED)
+{
+ errno = ENOTSUP;
+ return false;
+}
+#endif
+
+/* Enter and remove entries in the table 'cwd_file'. */
+
+static void
+free_ent (struct fileinfo *f)
+{
+ free (f->name);
+ free (f->linkname);
+ free (f->absolute_name);
+ if (f->scontext != UNKNOWN_SECURITY_CONTEXT)
+ {
+ if (is_smack_enabled ())
+ free (f->scontext);
+ else
+ freecon (f->scontext);
+ }
+}
+
+/* Empty the table of files. */
+static void
+clear_files (void)
+{
+ for (size_t i = 0; i < cwd_n_used; i++)
+ {
+ struct fileinfo *f = sorted_file[i];
+ free_ent (f);
+ }
+
+ cwd_n_used = 0;
+ cwd_some_quoted = false;
+ any_has_acl = false;
+ inode_number_width = 0;
+ block_size_width = 0;
+ nlink_width = 0;
+ owner_width = 0;
+ group_width = 0;
+ author_width = 0;
+ scontext_width = 0;
+ major_device_number_width = 0;
+ minor_device_number_width = 0;
+ file_size_width = 0;
+}
+
+/* Return true if ERR implies lack-of-support failure by a
+ getxattr-calling function like getfilecon or file_has_acl. */
+static bool
+errno_unsupported (int err)
+{
+ return (err == EINVAL || err == ENOSYS || is_ENOTSUP (err));
+}
+
+/* Cache *getfilecon failure, when it's trivial to do so.
+ Like getfilecon/lgetfilecon, but when F's st_dev says it's doesn't
+ support getting the security context, fail with ENOTSUP immediately. */
+static int
+getfilecon_cache (char const *file, struct fileinfo *f, bool deref)
+{
+ /* st_dev of the most recently processed device for which we've
+ found that [l]getfilecon fails indicating lack of support. */
+ static dev_t unsupported_device;
+
+ if (f->stat.st_dev == unsupported_device)
+ {
+ errno = ENOTSUP;
+ return -1;
+ }
+ int r = 0;
+#ifdef HAVE_SMACK
+ if (is_smack_enabled ())
+ r = smack_new_label_from_path (file, "security.SMACK64", deref,
+ &f->scontext);
+ else
+#endif
+ r = (deref
+ ? getfilecon (file, &f->scontext)
+ : lgetfilecon (file, &f->scontext));
+ if (r < 0 && errno_unsupported (errno))
+ unsupported_device = f->stat.st_dev;
+ return r;
+}
+
+/* Cache file_has_acl failure, when it's trivial to do.
+ Like file_has_acl, but when F's st_dev says it's on a file
+ system lacking ACL support, return 0 with ENOTSUP immediately. */
+static int
+file_has_acl_cache (char const *file, struct fileinfo *f)
+{
+ /* st_dev of the most recently processed device for which we've
+ found that file_has_acl fails indicating lack of support. */
+ static dev_t unsupported_device;
+
+ if (f->stat.st_dev == unsupported_device)
+ {
+ errno = ENOTSUP;
+ return 0;
+ }
+
+ /* Zero errno so that we can distinguish between two 0-returning cases:
+ "has-ACL-support, but only a default ACL" and "no ACL support". */
+ errno = 0;
+ int n = file_has_acl (file, &f->stat);
+ if (n <= 0 && errno_unsupported (errno))
+ unsupported_device = f->stat.st_dev;
+ return n;
+}
+
+/* Cache has_capability failure, when it's trivial to do.
+ Like has_capability, but when F's st_dev says it's on a file
+ system lacking capability support, return 0 with ENOTSUP immediately. */
+static bool
+has_capability_cache (char const *file, struct fileinfo *f)
+{
+ /* st_dev of the most recently processed device for which we've
+ found that has_capability fails indicating lack of support. */
+ static dev_t unsupported_device;
+
+ if (f->stat.st_dev == unsupported_device)
+ {
+ errno = ENOTSUP;
+ return 0;
+ }
+
+ bool b = has_capability (file);
+ if ( !b && errno_unsupported (errno))
+ unsupported_device = f->stat.st_dev;
+ return b;
+}
+
+static bool
+needs_quoting (char const* name)
+{
+ char test[2];
+ size_t len = quotearg_buffer (test, sizeof test , name, -1,
+ filename_quoting_options);
+ return *name != *test || strlen (name) != len;
+}
+
+/* Add a file to the current table of files.
+ Verify that the file exists, and print an error message if it does not.
+ Return the number of blocks that the file occupies. */
+static uintmax_t
+gobble_file (char const *name, enum filetype type, ino_t inode,
+ bool command_line_arg, char const *dirname)
+{
+ uintmax_t blocks = 0;
+ struct fileinfo *f;
+
+ /* An inode value prior to gobble_file necessarily came from readdir,
+ which is not used for command line arguments. */
+ assert (! command_line_arg || inode == NOT_AN_INODE_NUMBER);
+
+ if (cwd_n_used == cwd_n_alloc)
+ {
+ cwd_file = xnrealloc (cwd_file, cwd_n_alloc, 2 * sizeof *cwd_file);
+ cwd_n_alloc *= 2;
+ }
+
+ f = &cwd_file[cwd_n_used];
+ memset (f, '\0', sizeof *f);
+ f->stat.st_ino = inode;
+ f->filetype = type;
+
+ f->quoted = -1;
+ if ((! cwd_some_quoted) && align_variable_outer_quotes)
+ {
+ /* Determine if any quoted for padding purposes. */
+ f->quoted = needs_quoting (name);
+ if (f->quoted)
+ cwd_some_quoted = 1;
+ }
+
+ if (command_line_arg
+ || print_hyperlink
+ || format_needs_stat
+ /* When coloring a directory (we may know the type from
+ direct.d_type), we have to stat it in order to indicate
+ sticky and/or other-writable attributes. */
+ || (type == directory && print_with_color
+ && (is_colored (C_OTHER_WRITABLE)
+ || is_colored (C_STICKY)
+ || is_colored (C_STICKY_OTHER_WRITABLE)))
+ /* When dereferencing symlinks, the inode and type must come from
+ stat, but readdir provides the inode and type of lstat. */
+ || ((print_inode || format_needs_type)
+ && (type == symbolic_link || type == unknown)
+ && (dereference == DEREF_ALWAYS
+ || color_symlink_as_referent || check_symlink_mode))
+ /* Command line dereferences are already taken care of by the above
+ assertion that the inode number is not yet known. */
+ || (print_inode && inode == NOT_AN_INODE_NUMBER)
+ || (format_needs_type
+ && (type == unknown || command_line_arg
+ /* --indicator-style=classify (aka -F)
+ requires that we stat each regular file
+ to see if it's executable. */
+ || (type == normal && (indicator_style == classify
+ /* This is so that --color ends up
+ highlighting files with these mode
+ bits set even when options like -F are
+ not specified. Note we do a redundant
+ stat in the very unlikely case where
+ C_CAP is set but not the others. */
+ || (print_with_color
+ && (is_colored (C_EXEC)
+ || is_colored (C_SETUID)
+ || is_colored (C_SETGID)
+ || is_colored (C_CAP)))
+ )))))
+
+ {
+ /* Absolute name of this file. */
+ char *full_name;
+ bool do_deref;
+ int err;
+
+ if (name[0] == '/' || dirname[0] == 0)
+ full_name = (char *) name;
+ else
+ {
+ full_name = alloca (strlen (name) + strlen (dirname) + 2);
+ attach (full_name, dirname, name);
+ }
+
+ if (print_hyperlink)
+ {
+ f->absolute_name = canonicalize_filename_mode (full_name,
+ CAN_MISSING);
+ if (! f->absolute_name)
+ file_failure (command_line_arg,
+ _("error canonicalizing %s"), full_name);
+ }
+
+ switch (dereference)
+ {
+ case DEREF_ALWAYS:
+ err = do_stat (full_name, &f->stat);
+ do_deref = true;
+ break;
+
+ case DEREF_COMMAND_LINE_ARGUMENTS:
+ case DEREF_COMMAND_LINE_SYMLINK_TO_DIR:
+ if (command_line_arg)
+ {
+ bool need_lstat;
+ err = do_stat (full_name, &f->stat);
+ do_deref = true;
+
+ if (dereference == DEREF_COMMAND_LINE_ARGUMENTS)
+ break;
+
+ need_lstat = (err < 0
+ ? errno == ENOENT
+ : ! S_ISDIR (f->stat.st_mode));
+ if (!need_lstat)
+ break;
+
+ /* stat failed because of ENOENT, maybe indicating a dangling
+ symlink. Or stat succeeded, FULL_NAME does not refer to a
+ directory, and --dereference-command-line-symlink-to-dir is
+ in effect. Fall through so that we call lstat instead. */
+ }
+ FALLTHROUGH;
+
+ default: /* DEREF_NEVER */
+ err = do_lstat (full_name, &f->stat);
+ do_deref = false;
+ break;
+ }
+
+ if (err != 0)
+ {
+ /* Failure to stat a command line argument leads to
+ an exit status of 2. For other files, stat failure
+ provokes an exit status of 1. */
+ file_failure (command_line_arg,
+ _("cannot access %s"), full_name);
+ if (command_line_arg)
+ return 0;
+
+ f->name = xstrdup (name);
+ cwd_n_used++;
+
+ return 0;
+ }
+
+ f->stat_ok = true;
+
+ /* Note has_capability() adds around 30% runtime to 'ls --color' */
+ if ((type == normal || S_ISREG (f->stat.st_mode))
+ && print_with_color && is_colored (C_CAP))
+ f->has_capability = has_capability_cache (full_name, f);
+
+ if (format == long_format || print_scontext)
+ {
+ bool have_scontext = false;
+ bool have_acl = false;
+ int attr_len = getfilecon_cache (full_name, f, do_deref);
+ err = (attr_len < 0);
+
+ if (err == 0)
+ {
+ if (is_smack_enabled ())
+ have_scontext = ! STREQ ("_", f->scontext);
+ else
+ have_scontext = ! STREQ ("unlabeled", f->scontext);
+ }
+ else
+ {
+ f->scontext = UNKNOWN_SECURITY_CONTEXT;
+
+ /* When requesting security context information, don't make
+ ls fail just because the file (even a command line argument)
+ isn't on the right type of file system. I.e., a getfilecon
+ failure isn't in the same class as a stat failure. */
+ if (is_ENOTSUP (errno) || errno == ENODATA)
+ err = 0;
+ }
+
+ if (err == 0 && format == long_format)
+ {
+ int n = file_has_acl_cache (full_name, f);
+ err = (n < 0);
+ have_acl = (0 < n);
+ }
+
+ f->acl_type = (!have_scontext && !have_acl
+ ? ACL_T_NONE
+ : (have_scontext && !have_acl
+ ? ACL_T_LSM_CONTEXT_ONLY
+ : ACL_T_YES));
+ any_has_acl |= f->acl_type != ACL_T_NONE;
+
+ if (err)
+ error (0, errno, "%s", quotef (full_name));
+ }
+
+ if (S_ISLNK (f->stat.st_mode)
+ && (format == long_format || check_symlink_mode))
+ {
+ struct stat linkstats;
+
+ get_link_name (full_name, f, command_line_arg);
+ char *linkname = make_link_name (full_name, f->linkname);
+
+ /* Use the slower quoting path for this entry, though
+ don't update CWD_SOME_QUOTED since alignment not affected. */
+ if (linkname && f->quoted == 0 && needs_quoting (f->linkname))
+ f->quoted = -1;
+
+ /* Avoid following symbolic links when possible, ie, when
+ they won't be traced and when no indicator is needed. */
+ if (linkname
+ && (file_type <= indicator_style || check_symlink_mode)
+ && stat_for_mode (linkname, &linkstats) == 0)
+ {
+ f->linkok = true;
+ f->linkmode = linkstats.st_mode;
+ }
+ free (linkname);
+ }
+
+ if (S_ISLNK (f->stat.st_mode))
+ f->filetype = symbolic_link;
+ else if (S_ISDIR (f->stat.st_mode))
+ {
+ if (command_line_arg && !immediate_dirs)
+ f->filetype = arg_directory;
+ else
+ f->filetype = directory;
+ }
+ else
+ f->filetype = normal;
+
+ blocks = ST_NBLOCKS (f->stat);
+ if (format == long_format || print_block_size)
+ {
+ char buf[LONGEST_HUMAN_READABLE + 1];
+ int len = mbswidth (human_readable (blocks, buf, human_output_opts,
+ ST_NBLOCKSIZE, output_block_size),
+ 0);
+ if (block_size_width < len)
+ block_size_width = len;
+ }
+
+ if (format == long_format)
+ {
+ if (print_owner)
+ {
+ int len = format_user_width (f->stat.st_uid);
+ if (owner_width < len)
+ owner_width = len;
+ }
+
+ if (print_group)
+ {
+ int len = format_group_width (f->stat.st_gid);
+ if (group_width < len)
+ group_width = len;
+ }
+
+ if (print_author)
+ {
+ int len = format_user_width (f->stat.st_author);
+ if (author_width < len)
+ author_width = len;
+ }
+ }
+
+ if (print_scontext)
+ {
+ int len = strlen (f->scontext);
+ if (scontext_width < len)
+ scontext_width = len;
+ }
+
+ if (format == long_format)
+ {
+ char b[INT_BUFSIZE_BOUND (uintmax_t)];
+ int b_len = strlen (umaxtostr (f->stat.st_nlink, b));
+ if (nlink_width < b_len)
+ nlink_width = b_len;
+
+ if (S_ISCHR (f->stat.st_mode) || S_ISBLK (f->stat.st_mode))
+ {
+ char buf[INT_BUFSIZE_BOUND (uintmax_t)];
+ int len = strlen (umaxtostr (major (f->stat.st_rdev), buf));
+ if (major_device_number_width < len)
+ major_device_number_width = len;
+ len = strlen (umaxtostr (minor (f->stat.st_rdev), buf));
+ if (minor_device_number_width < len)
+ minor_device_number_width = len;
+ len = major_device_number_width + 2 + minor_device_number_width;
+ if (file_size_width < len)
+ file_size_width = len;
+ }
+ else
+ {
+ char buf[LONGEST_HUMAN_READABLE + 1];
+ uintmax_t size = unsigned_file_size (f->stat.st_size);
+ int len = mbswidth (human_readable (size, buf,
+ file_human_output_opts,
+ 1, file_output_block_size),
+ 0);
+ if (file_size_width < len)
+ file_size_width = len;
+ }
+ }
+ }
+
+ if (print_inode)
+ {
+ char buf[INT_BUFSIZE_BOUND (uintmax_t)];
+ int len = strlen (umaxtostr (f->stat.st_ino, buf));
+ if (inode_number_width < len)
+ inode_number_width = len;
+ }
+
+ f->name = xstrdup (name);
+ cwd_n_used++;
+
+ return blocks;
+}
+
+/* Return true if F refers to a directory. */
+static bool
+is_directory (const struct fileinfo *f)
+{
+ return f->filetype == directory || f->filetype == arg_directory;
+}
+
+/* Return true if F refers to a (symlinked) directory. */
+static bool
+is_linked_directory (const struct fileinfo *f)
+{
+ return f->filetype == directory || f->filetype == arg_directory
+ || S_ISDIR (f->linkmode);
+}
+
+/* Put the name of the file that FILENAME is a symbolic link to
+ into the LINKNAME field of 'f'. COMMAND_LINE_ARG indicates whether
+ FILENAME is a command-line argument. */
+
+static void
+get_link_name (char const *filename, struct fileinfo *f, bool command_line_arg)
+{
+ f->linkname = areadlink_with_size (filename, f->stat.st_size);
+ if (f->linkname == NULL)
+ file_failure (command_line_arg, _("cannot read symbolic link %s"),
+ filename);
+}
+
+/* If LINKNAME is a relative name and NAME contains one or more
+ leading directories, return LINKNAME with those directories
+ prepended; otherwise, return a copy of LINKNAME.
+ If LINKNAME is NULL, return NULL. */
+
+static char *
+make_link_name (char const *name, char const *linkname)
+{
+ if (!linkname)
+ return NULL;
+
+ if (IS_ABSOLUTE_FILE_NAME (linkname))
+ return xstrdup (linkname);
+
+ /* The link is to a relative name. Prepend any leading directory
+ in 'name' to the link name. */
+ size_t prefix_len = dir_len (name);
+ if (prefix_len == 0)
+ return xstrdup (linkname);
+
+ char *p = xmalloc (prefix_len + 1 + strlen (linkname) + 1);
+
+ /* PREFIX_LEN usually specifies a string not ending in slash.
+ In that case, extend it by one, since the next byte *is* a slash.
+ Otherwise, the prefix is "/", so leave the length unchanged. */
+ if ( ! ISSLASH (name[prefix_len - 1]))
+ ++prefix_len;
+
+ stpcpy (stpncpy (p, name, prefix_len), linkname);
+ return p;
+}
+
+/* Return true if the last component of NAME is '.' or '..'
+ This is so we don't try to recurse on '././././. ...' */
+
+static bool
+basename_is_dot_or_dotdot (const char *name)
+{
+ char const *base = last_component (name);
+ return dot_or_dotdot (base);
+}
+
+/* Remove any entries from CWD_FILE that are for directories,
+ and queue them to be listed as directories instead.
+ DIRNAME is the prefix to prepend to each dirname
+ to make it correct relative to ls's working dir;
+ if it is null, no prefix is needed and "." and ".." should not be ignored.
+ If COMMAND_LINE_ARG is true, this directory was mentioned at the top level,
+ This is desirable when processing directories recursively. */
+
+static void
+extract_dirs_from_files (char const *dirname, bool command_line_arg)
+{
+ size_t i;
+ size_t j;
+ bool ignore_dot_and_dot_dot = (dirname != NULL);
+
+ if (dirname && LOOP_DETECT)
+ {
+ /* Insert a marker entry first. When we dequeue this marker entry,
+ we'll know that DIRNAME has been processed and may be removed
+ from the set of active directories. */
+ queue_directory (NULL, dirname, false);
+ }
+
+ /* Queue the directories last one first, because queueing reverses the
+ order. */
+ for (i = cwd_n_used; i-- != 0; )
+ {
+ struct fileinfo *f = sorted_file[i];
+
+ if (is_directory (f)
+ && (! ignore_dot_and_dot_dot
+ || ! basename_is_dot_or_dotdot (f->name)))
+ {
+ if (!dirname || f->name[0] == '/')
+ queue_directory (f->name, f->linkname, command_line_arg);
+ else
+ {
+ char *name = file_name_concat (dirname, f->name, NULL);
+ queue_directory (name, f->linkname, command_line_arg);
+ free (name);
+ }
+ if (f->filetype == arg_directory)
+ free_ent (f);
+ }
+ }
+
+ /* Now delete the directories from the table, compacting all the remaining
+ entries. */
+
+ for (i = 0, j = 0; i < cwd_n_used; i++)
+ {
+ struct fileinfo *f = sorted_file[i];
+ sorted_file[j] = f;
+ j += (f->filetype != arg_directory);
+ }
+ cwd_n_used = j;
+}
+
+/* Use strcoll to compare strings in this locale. If an error occurs,
+ report an error and longjmp to failed_strcoll. */
+
+static jmp_buf failed_strcoll;
+
+static int
+xstrcoll (char const *a, char const *b)
+{
+ int diff;
+ errno = 0;
+ diff = strcoll (a, b);
+ if (errno)
+ {
+ error (0, errno, _("cannot compare file names %s and %s"),
+ quote_n (0, a), quote_n (1, b));
+ set_exit_status (false);
+ longjmp (failed_strcoll, 1);
+ }
+ return diff;
+}
+
+/* Comparison routines for sorting the files. */
+
+typedef void const *V;
+typedef int (*qsortFunc)(V a, V b);
+
+/* Used below in DEFINE_SORT_FUNCTIONS for _df_ sort function variants.
+ The do { ... } while(0) makes it possible to use the macro more like
+ a statement, without violating C89 rules: */
+#define DIRFIRST_CHECK(a, b) \
+ do \
+ { \
+ bool a_is_dir = is_linked_directory ((struct fileinfo const *) a);\
+ bool b_is_dir = is_linked_directory ((struct fileinfo const *) b);\
+ if (a_is_dir && !b_is_dir) \
+ return -1; /* a goes before b */ \
+ if (!a_is_dir && b_is_dir) \
+ return 1; /* b goes before a */ \
+ } \
+ while (0)
+
+/* Define the 8 different sort function variants required for each sortkey.
+ KEY_NAME is a token describing the sort key, e.g., ctime, atime, size.
+ KEY_CMP_FUNC is a function to compare records based on that key, e.g.,
+ ctime_cmp, atime_cmp, size_cmp. Append KEY_NAME to the string,
+ '[rev_][x]str{cmp|coll}[_df]_', to create each function name. */
+#define DEFINE_SORT_FUNCTIONS(key_name, key_cmp_func) \
+ /* direct, non-dirfirst versions */ \
+ static int xstrcoll_##key_name (V a, V b) \
+ { return key_cmp_func (a, b, xstrcoll); } \
+ static int _GL_ATTRIBUTE_PURE strcmp_##key_name (V a, V b) \
+ { return key_cmp_func (a, b, strcmp); } \
+ \
+ /* reverse, non-dirfirst versions */ \
+ static int rev_xstrcoll_##key_name (V a, V b) \
+ { return key_cmp_func (b, a, xstrcoll); } \
+ static int _GL_ATTRIBUTE_PURE rev_strcmp_##key_name (V a, V b) \
+ { return key_cmp_func (b, a, strcmp); } \
+ \
+ /* direct, dirfirst versions */ \
+ static int xstrcoll_df_##key_name (V a, V b) \
+ { DIRFIRST_CHECK (a, b); return key_cmp_func (a, b, xstrcoll); } \
+ static int _GL_ATTRIBUTE_PURE strcmp_df_##key_name (V a, V b) \
+ { DIRFIRST_CHECK (a, b); return key_cmp_func (a, b, strcmp); } \
+ \
+ /* reverse, dirfirst versions */ \
+ static int rev_xstrcoll_df_##key_name (V a, V b) \
+ { DIRFIRST_CHECK (a, b); return key_cmp_func (b, a, xstrcoll); } \
+ static int _GL_ATTRIBUTE_PURE rev_strcmp_df_##key_name (V a, V b) \
+ { DIRFIRST_CHECK (a, b); return key_cmp_func (b, a, strcmp); }
+
+static inline int
+cmp_ctime (struct fileinfo const *a, struct fileinfo const *b,
+ int (*cmp) (char const *, char const *))
+{
+ int diff = timespec_cmp (get_stat_ctime (&b->stat),
+ get_stat_ctime (&a->stat));
+ return diff ? diff : cmp (a->name, b->name);
+}
+
+static inline int
+cmp_mtime (struct fileinfo const *a, struct fileinfo const *b,
+ int (*cmp) (char const *, char const *))
+{
+ int diff = timespec_cmp (get_stat_mtime (&b->stat),
+ get_stat_mtime (&a->stat));
+ return diff ? diff : cmp (a->name, b->name);
+}
+
+static inline int
+cmp_atime (struct fileinfo const *a, struct fileinfo const *b,
+ int (*cmp) (char const *, char const *))
+{
+ int diff = timespec_cmp (get_stat_atime (&b->stat),
+ get_stat_atime (&a->stat));
+ return diff ? diff : cmp (a->name, b->name);
+}
+
+static inline int
+cmp_btime (struct fileinfo const *a, struct fileinfo const *b,
+ int (*cmp) (char const *, char const *))
+{
+ int diff = timespec_cmp (get_stat_btime (&b->stat),
+ get_stat_btime (&a->stat));
+ return diff ? diff : cmp (a->name, b->name);
+}
+
+static inline int
+cmp_size (struct fileinfo const *a, struct fileinfo const *b,
+ int (*cmp) (char const *, char const *))
+{
+ int diff = longdiff (b->stat.st_size, a->stat.st_size);
+ return diff ? diff : cmp (a->name, b->name);
+}
+
+static inline int
+cmp_name (struct fileinfo const *a, struct fileinfo const *b,
+ int (*cmp) (char const *, char const *))
+{
+ return cmp (a->name, b->name);
+}
+
+/* Compare file extensions. Files with no extension are 'smallest'.
+ If extensions are the same, compare by file names instead. */
+
+static inline int
+cmp_extension (struct fileinfo const *a, struct fileinfo const *b,
+ int (*cmp) (char const *, char const *))
+{
+ char const *base1 = strrchr (a->name, '.');
+ char const *base2 = strrchr (b->name, '.');
+ int diff = cmp (base1 ? base1 : "", base2 ? base2 : "");
+ return diff ? diff : cmp (a->name, b->name);
+}
+
+DEFINE_SORT_FUNCTIONS (ctime, cmp_ctime)
+DEFINE_SORT_FUNCTIONS (mtime, cmp_mtime)
+DEFINE_SORT_FUNCTIONS (atime, cmp_atime)
+DEFINE_SORT_FUNCTIONS (btime, cmp_btime)
+DEFINE_SORT_FUNCTIONS (size, cmp_size)
+DEFINE_SORT_FUNCTIONS (name, cmp_name)
+DEFINE_SORT_FUNCTIONS (extension, cmp_extension)
+
+/* Compare file versions.
+ Unlike all other compare functions above, cmp_version depends only
+ on filevercmp, which does not fail (even for locale reasons), and does not
+ need a secondary sort key. See lib/filevercmp.h for function description.
+
+ All the other sort options, in fact, need xstrcoll and strcmp variants,
+ because they all use a string comparison (either as the primary or secondary
+ sort key), and xstrcoll has the ability to do a longjmp if strcoll fails for
+ locale reasons. Lastly, filevercmp is ALWAYS available with gnulib. */
+static inline int
+cmp_version (struct fileinfo const *a, struct fileinfo const *b)
+{
+ return filevercmp (a->name, b->name);
+}
+
+static int xstrcoll_version (V a, V b)
+{ return cmp_version (a, b); }
+static int rev_xstrcoll_version (V a, V b)
+{ return cmp_version (b, a); }
+static int xstrcoll_df_version (V a, V b)
+{ DIRFIRST_CHECK (a, b); return cmp_version (a, b); }
+static int rev_xstrcoll_df_version (V a, V b)
+{ DIRFIRST_CHECK (a, b); return cmp_version (b, a); }
+
+
+/* We have 2^3 different variants for each sort-key function
+ (for 3 independent sort modes).
+ The function pointers stored in this array must be dereferenced as:
+
+ sort_variants[sort_key][use_strcmp][reverse][dirs_first]
+
+ Note that the order in which sort keys are listed in the function pointer
+ array below is defined by the order of the elements in the time_type and
+ sort_type enums! */
+
+#define LIST_SORTFUNCTION_VARIANTS(key_name) \
+ { \
+ { \
+ { xstrcoll_##key_name, xstrcoll_df_##key_name }, \
+ { rev_xstrcoll_##key_name, rev_xstrcoll_df_##key_name }, \
+ }, \
+ { \
+ { strcmp_##key_name, strcmp_df_##key_name }, \
+ { rev_strcmp_##key_name, rev_strcmp_df_##key_name }, \
+ } \
+ }
+
+static qsortFunc const sort_functions[][2][2][2] =
+ {
+ LIST_SORTFUNCTION_VARIANTS (name),
+ LIST_SORTFUNCTION_VARIANTS (extension),
+ LIST_SORTFUNCTION_VARIANTS (size),
+
+ {
+ {
+ { xstrcoll_version, xstrcoll_df_version },
+ { rev_xstrcoll_version, rev_xstrcoll_df_version },
+ },
+
+ /* We use NULL for the strcmp variants of version comparison
+ since as explained in cmp_version definition, version comparison
+ does not rely on xstrcoll, so it will never longjmp, and never
+ need to try the strcmp fallback. */
+ {
+ { NULL, NULL },
+ { NULL, NULL },
+ }
+ },
+
+ /* last are time sort functions */
+ LIST_SORTFUNCTION_VARIANTS (mtime),
+ LIST_SORTFUNCTION_VARIANTS (ctime),
+ LIST_SORTFUNCTION_VARIANTS (atime),
+ LIST_SORTFUNCTION_VARIANTS (btime)
+ };
+
+/* The number of sort keys is calculated as the sum of
+ the number of elements in the sort_type enum (i.e., sort_numtypes)
+ the number of elements in the time_type enum (i.e., time_numtypes) - 1
+ This is because when sort_type==sort_time, we have up to
+ time_numtypes possible sort keys.
+
+ This line verifies at compile-time that the array of sort functions has been
+ initialized for all possible sort keys. */
+verify (ARRAY_CARDINALITY (sort_functions)
+ == sort_numtypes + time_numtypes - 1 );
+
+/* Set up SORTED_FILE to point to the in-use entries in CWD_FILE, in order. */
+
+static void
+initialize_ordering_vector (void)
+{
+ for (size_t i = 0; i < cwd_n_used; i++)
+ sorted_file[i] = &cwd_file[i];
+}
+
+/* Sort the files now in the table. */
+
+static void
+sort_files (void)
+{
+ bool use_strcmp;
+
+ if (sorted_file_alloc < cwd_n_used + cwd_n_used / 2)
+ {
+ free (sorted_file);
+ sorted_file = xnmalloc (cwd_n_used, 3 * sizeof *sorted_file);
+ sorted_file_alloc = 3 * cwd_n_used;
+ }
+
+ initialize_ordering_vector ();
+
+ if (sort_type == sort_none)
+ return;
+
+ /* Try strcoll. If it fails, fall back on strcmp. We can't safely
+ ignore strcoll failures, as a failing strcoll might be a
+ comparison function that is not a total order, and if we ignored
+ the failure this might cause qsort to dump core. */
+
+ if (! setjmp (failed_strcoll))
+ use_strcmp = false; /* strcoll() succeeded */
+ else
+ {
+ use_strcmp = true;
+ assert (sort_type != sort_version);
+ initialize_ordering_vector ();
+ }
+
+ /* When sort_type == sort_time, use time_type as subindex. */
+ mpsort ((void const **) sorted_file, cwd_n_used,
+ sort_functions[sort_type + (sort_type == sort_time ? time_type : 0)]
+ [use_strcmp][sort_reverse]
+ [directories_first]);
+}
+
+/* List all the files now in the table. */
+
+static void
+print_current_files (void)
+{
+ size_t i;
+
+ switch (format)
+ {
+ case one_per_line:
+ for (i = 0; i < cwd_n_used; i++)
+ {
+ print_file_name_and_frills (sorted_file[i], 0);
+ putchar ('\n');
+ }
+ break;
+
+ case many_per_line:
+ if (! line_length)
+ print_with_separator (' ');
+ else
+ print_many_per_line ();
+ break;
+
+ case horizontal:
+ if (! line_length)
+ print_with_separator (' ');
+ else
+ print_horizontal ();
+ break;
+
+ case with_commas:
+ print_with_separator (',');
+ break;
+
+ case long_format:
+ for (i = 0; i < cwd_n_used; i++)
+ {
+ set_normal_color ();
+ print_long_format (sorted_file[i]);
+ DIRED_PUTCHAR ('\n');
+ }
+ break;
+ }
+}
+
+/* Replace the first %b with precomputed aligned month names.
+ Note on glibc-2.7 at least, this speeds up the whole 'ls -lU'
+ process by around 17%, compared to letting strftime() handle the %b. */
+
+static size_t
+align_nstrftime (char *buf, size_t size, bool recent, struct tm const *tm,
+ timezone_t tz, int ns)
+{
+ char const *nfmt = (use_abformat
+ ? abformat[recent][tm->tm_mon]
+ : long_time_format[recent]);
+ return nstrftime (buf, size, nfmt, tm, tz, ns);
+}
+
+/* Return the expected number of columns in a long-format timestamp,
+ or zero if it cannot be calculated. */
+
+static int
+long_time_expected_width (void)
+{
+ static int width = -1;
+
+ if (width < 0)
+ {
+ time_t epoch = 0;
+ struct tm tm;
+ char buf[TIME_STAMP_LEN_MAXIMUM + 1];
+
+ /* In case you're wondering if localtime_rz can fail with an input time_t
+ value of 0, let's just say it's very unlikely, but not inconceivable.
+ The TZ environment variable would have to specify a time zone that
+ is 2**31-1900 years or more ahead of UTC. This could happen only on
+ a 64-bit system that blindly accepts e.g., TZ=UTC+20000000000000.
+ However, this is not possible with Solaris 10 or glibc-2.3.5, since
+ their implementations limit the offset to 167:59 and 24:00, resp. */
+ if (localtime_rz (localtz, &epoch, &tm))
+ {
+ size_t len = align_nstrftime (buf, sizeof buf, false,
+ &tm, localtz, 0);
+ if (len != 0)
+ width = mbsnwidth (buf, len, 0);
+ }
+
+ if (width < 0)
+ width = 0;
+ }
+
+ return width;
+}
+
+/* Print the user or group name NAME, with numeric id ID, using a
+ print width of WIDTH columns. */
+
+static void
+format_user_or_group (char const *name, unsigned long int id, int width)
+{
+ size_t len;
+
+ if (name)
+ {
+ int width_gap = width - mbswidth (name, 0);
+ int pad = MAX (0, width_gap);
+ fputs (name, stdout);
+ len = strlen (name) + pad;
+
+ do
+ putchar (' ');
+ while (pad--);
+ }
+ else
+ {
+ printf ("%*lu ", width, id);
+ len = width;
+ }
+
+ dired_pos += len + 1;
+}
+
+/* Print the name or id of the user with id U, using a print width of
+ WIDTH. */
+
+static void
+format_user (uid_t u, int width, bool stat_ok)
+{
+ format_user_or_group (! stat_ok ? "?" :
+ (numeric_ids ? NULL : getuser (u)), u, width);
+}
+
+/* Likewise, for groups. */
+
+static void
+format_group (gid_t g, int width, bool stat_ok)
+{
+ format_user_or_group (! stat_ok ? "?" :
+ (numeric_ids ? NULL : getgroup (g)), g, width);
+}
+
+/* Return the number of columns that format_user_or_group will print. */
+
+static int
+format_user_or_group_width (char const *name, unsigned long int id)
+{
+ if (name)
+ {
+ int len = mbswidth (name, 0);
+ return MAX (0, len);
+ }
+ else
+ {
+ char buf[INT_BUFSIZE_BOUND (id)];
+ sprintf (buf, "%lu", id);
+ return strlen (buf);
+ }
+}
+
+/* Return the number of columns that format_user will print. */
+
+static int
+format_user_width (uid_t u)
+{
+ return format_user_or_group_width (numeric_ids ? NULL : getuser (u), u);
+}
+
+/* Likewise, for groups. */
+
+static int
+format_group_width (gid_t g)
+{
+ return format_user_or_group_width (numeric_ids ? NULL : getgroup (g), g);
+}
+
+/* Return a pointer to a formatted version of F->stat.st_ino,
+ possibly using buffer, BUF, of length BUFLEN, which must be at least
+ INT_BUFSIZE_BOUND (uintmax_t) bytes. */
+static char *
+format_inode (char *buf, size_t buflen, const struct fileinfo *f)
+{
+ assert (INT_BUFSIZE_BOUND (uintmax_t) <= buflen);
+ return (f->stat_ok && f->stat.st_ino != NOT_AN_INODE_NUMBER
+ ? umaxtostr (f->stat.st_ino, buf)
+ : (char *) "?");
+}
+
+/* Print information about F in long format. */
+static void
+print_long_format (const struct fileinfo *f)
+{
+ char modebuf[12];
+ char buf
+ [LONGEST_HUMAN_READABLE + 1 /* inode */
+ + LONGEST_HUMAN_READABLE + 1 /* size in blocks */
+ + sizeof (modebuf) - 1 + 1 /* mode string */
+ + INT_BUFSIZE_BOUND (uintmax_t) /* st_nlink */
+ + LONGEST_HUMAN_READABLE + 2 /* major device number */
+ + LONGEST_HUMAN_READABLE + 1 /* minor device number */
+ + TIME_STAMP_LEN_MAXIMUM + 1 /* max length of time/date */
+ ];
+ size_t s;
+ char *p;
+ struct timespec when_timespec;
+ struct tm when_local;
+ bool btime_ok = true;
+
+ /* Compute the mode string, except remove the trailing space if no
+ file in this directory has an ACL or security context. */
+ if (f->stat_ok)
+ filemodestring (&f->stat, modebuf);
+ else
+ {
+ modebuf[0] = filetype_letter[f->filetype];
+ memset (modebuf + 1, '?', 10);
+ modebuf[11] = '\0';
+ }
+ if (! any_has_acl)
+ modebuf[10] = '\0';
+ else if (f->acl_type == ACL_T_LSM_CONTEXT_ONLY)
+ modebuf[10] = '.';
+ else if (f->acl_type == ACL_T_YES)
+ modebuf[10] = '+';
+
+ switch (time_type)
+ {
+ case time_ctime:
+ when_timespec = get_stat_ctime (&f->stat);
+ break;
+ case time_mtime:
+ when_timespec = get_stat_mtime (&f->stat);
+ break;
+ case time_atime:
+ when_timespec = get_stat_atime (&f->stat);
+ break;
+ case time_btime:
+ when_timespec = get_stat_btime (&f->stat);
+ if (when_timespec.tv_sec == -1 && when_timespec.tv_nsec == -1)
+ btime_ok = false;
+ break;
+ default:
+ abort ();
+ }
+
+ p = buf;
+
+ if (print_inode)
+ {
+ char hbuf[INT_BUFSIZE_BOUND (uintmax_t)];
+ sprintf (p, "%*s ", inode_number_width,
+ format_inode (hbuf, sizeof hbuf, f));
+ /* Increment by strlen (p) here, rather than by inode_number_width + 1.
+ The latter is wrong when inode_number_width is zero. */
+ p += strlen (p);
+ }
+
+ if (print_block_size)
+ {
+ char hbuf[LONGEST_HUMAN_READABLE + 1];
+ char const *blocks =
+ (! f->stat_ok
+ ? "?"
+ : human_readable (ST_NBLOCKS (f->stat), hbuf, human_output_opts,
+ ST_NBLOCKSIZE, output_block_size));
+ int pad;
+ for (pad = block_size_width - mbswidth (blocks, 0); 0 < pad; pad--)
+ *p++ = ' ';
+ while ((*p++ = *blocks++))
+ continue;
+ p[-1] = ' ';
+ }
+
+ /* The last byte of the mode string is the POSIX
+ "optional alternate access method flag". */
+ {
+ char hbuf[INT_BUFSIZE_BOUND (uintmax_t)];
+ sprintf (p, "%s %*s ", modebuf, nlink_width,
+ ! f->stat_ok ? "?" : umaxtostr (f->stat.st_nlink, hbuf));
+ }
+ /* Increment by strlen (p) here, rather than by, e.g.,
+ sizeof modebuf - 2 + any_has_acl + 1 + nlink_width + 1.
+ The latter is wrong when nlink_width is zero. */
+ p += strlen (p);
+
+ DIRED_INDENT ();
+
+ if (print_owner || print_group || print_author || print_scontext)
+ {
+ DIRED_FPUTS (buf, stdout, p - buf);
+
+ if (print_owner)
+ format_user (f->stat.st_uid, owner_width, f->stat_ok);
+
+ if (print_group)
+ format_group (f->stat.st_gid, group_width, f->stat_ok);
+
+ if (print_author)
+ format_user (f->stat.st_author, author_width, f->stat_ok);
+
+ if (print_scontext)
+ format_user_or_group (f->scontext, 0, scontext_width);
+
+ p = buf;
+ }
+
+ if (f->stat_ok
+ && (S_ISCHR (f->stat.st_mode) || S_ISBLK (f->stat.st_mode)))
+ {
+ char majorbuf[INT_BUFSIZE_BOUND (uintmax_t)];
+ char minorbuf[INT_BUFSIZE_BOUND (uintmax_t)];
+ int blanks_width = (file_size_width
+ - (major_device_number_width + 2
+ + minor_device_number_width));
+ sprintf (p, "%*s, %*s ",
+ major_device_number_width + MAX (0, blanks_width),
+ umaxtostr (major (f->stat.st_rdev), majorbuf),
+ minor_device_number_width,
+ umaxtostr (minor (f->stat.st_rdev), minorbuf));
+ p += file_size_width + 1;
+ }
+ else
+ {
+ char hbuf[LONGEST_HUMAN_READABLE + 1];
+ char const *size =
+ (! f->stat_ok
+ ? "?"
+ : human_readable (unsigned_file_size (f->stat.st_size),
+ hbuf, file_human_output_opts, 1,
+ file_output_block_size));
+ int pad;
+ for (pad = file_size_width - mbswidth (size, 0); 0 < pad; pad--)
+ *p++ = ' ';
+ while ((*p++ = *size++))
+ continue;
+ p[-1] = ' ';
+ }
+
+ s = 0;
+ *p = '\1';
+
+ if (f->stat_ok && btime_ok
+ && localtime_rz (localtz, &when_timespec.tv_sec, &when_local))
+ {
+ struct timespec six_months_ago;
+ bool recent;
+
+ /* If the file appears to be in the future, update the current
+ time, in case the file happens to have been modified since
+ the last time we checked the clock. */
+ if (timespec_cmp (current_time, when_timespec) < 0)
+ gettime (¤t_time);
+
+ /* Consider a time to be recent if it is within the past six months.
+ A Gregorian year has 365.2425 * 24 * 60 * 60 == 31556952 seconds
+ on the average. Write this value as an integer constant to
+ avoid floating point hassles. */
+ six_months_ago.tv_sec = current_time.tv_sec - 31556952 / 2;
+ six_months_ago.tv_nsec = current_time.tv_nsec;
+
+ recent = (timespec_cmp (six_months_ago, when_timespec) < 0
+ && (timespec_cmp (when_timespec, current_time) < 0));
+
+ /* We assume here that all time zones are offset from UTC by a
+ whole number of seconds. */
+ s = align_nstrftime (p, TIME_STAMP_LEN_MAXIMUM + 1, recent,
+ &when_local, localtz, when_timespec.tv_nsec);
+ }
+
+ if (s || !*p)
+ {
+ p += s;
+ *p++ = ' ';
+
+ /* NUL-terminate the string -- fputs (via DIRED_FPUTS) requires it. */
+ *p = '\0';
+ }
+ else
+ {
+ /* The time cannot be converted using the desired format, so
+ print it as a huge integer number of seconds. */
+ char hbuf[INT_BUFSIZE_BOUND (intmax_t)];
+ sprintf (p, "%*s ", long_time_expected_width (),
+ (! f->stat_ok || ! btime_ok
+ ? "?"
+ : timetostr (when_timespec.tv_sec, hbuf)));
+ /* FIXME: (maybe) We discarded when_timespec.tv_nsec. */
+ p += strlen (p);
+ }
+
+ DIRED_FPUTS (buf, stdout, p - buf);
+ size_t w = print_name_with_quoting (f, false, &dired_obstack, p - buf);
+
+ if (f->filetype == symbolic_link)
+ {
+ if (f->linkname)
+ {
+ DIRED_FPUTS_LITERAL (" -> ", stdout);
+ print_name_with_quoting (f, true, NULL, (p - buf) + w + 4);
+ if (indicator_style != none)
+ print_type_indicator (true, f->linkmode, unknown);
+ }
+ }
+ else if (indicator_style != none)
+ print_type_indicator (f->stat_ok, f->stat.st_mode, f->filetype);
+}
+
+/* Write to *BUF a quoted representation of the file name NAME, if non-NULL,
+ using OPTIONS to control quoting. *BUF is set to NAME if no quoting
+ is required. *BUF is allocated if more space required (and the original
+ *BUF is not deallocated).
+ Store the number of screen columns occupied by NAME's quoted
+ representation into WIDTH, if non-NULL.
+ Store into PAD whether an initial space is needed for padding.
+ Return the number of bytes in *BUF. */
+
+static size_t
+quote_name_buf (char **inbuf, size_t bufsize, char *name,
+ struct quoting_options const *options,
+ int needs_general_quoting, size_t *width, bool *pad)
+{
+ char *buf = *inbuf;
+ size_t displayed_width IF_LINT ( = 0);
+ size_t len = 0;
+ bool quoted;
+
+ enum quoting_style qs = get_quoting_style (options);
+ bool needs_further_quoting = qmark_funny_chars
+ && (qs == shell_quoting_style
+ || qs == shell_always_quoting_style
+ || qs == literal_quoting_style);
+
+ if (needs_general_quoting != 0)
+ {
+ len = quotearg_buffer (buf, bufsize, name, -1, options);
+ if (bufsize <= len)
+ {
+ buf = xmalloc (len + 1);
+ quotearg_buffer (buf, len + 1, name, -1, options);
+ }
+
+ quoted = (*name != *buf) || strlen (name) != len;
+ }
+ else if (needs_further_quoting)
+ {
+ len = strlen (name);
+ if (bufsize <= len)
+ buf = xmalloc (len + 1);
+ memcpy (buf, name, len + 1);
+
+ quoted = false;
+ }
+ else
+ {
+ len = strlen (name);
+ buf = name;
+ quoted = false;
+ }
+
+ if (needs_further_quoting)
+ {
+ if (MB_CUR_MAX > 1)
+ {
+ char const *p = buf;
+ char const *plimit = buf + len;
+ char *q = buf;
+ displayed_width = 0;
+
+ while (p < plimit)
+ switch (*p)
+ {
+ case ' ': case '!': case '"': case '#': case '%':
+ case '&': case '\'': case '(': case ')': case '*':
+ case '+': case ',': case '-': case '.': case '/':
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ case ':': case ';': case '<': case '=': case '>':
+ case '?':
+ case 'A': case 'B': case 'C': case 'D': case 'E':
+ case 'F': case 'G': case 'H': case 'I': case 'J':
+ case 'K': case 'L': case 'M': case 'N': case 'O':
+ case 'P': case 'Q': case 'R': case 'S': case 'T':
+ case 'U': case 'V': case 'W': case 'X': case 'Y':
+ case 'Z':
+ case '[': case '\\': case ']': case '^': case '_':
+ case 'a': case 'b': case 'c': case 'd': case 'e':
+ case 'f': case 'g': case 'h': case 'i': case 'j':
+ case 'k': case 'l': case 'm': case 'n': case 'o':
+ case 'p': case 'q': case 'r': case 's': case 't':
+ case 'u': case 'v': case 'w': case 'x': case 'y':
+ case 'z': case '{': case '|': case '}': case '~':
+ /* These characters are printable ASCII characters. */
+ *q++ = *p++;
+ displayed_width += 1;
+ break;
+ default:
+ /* If we have a multibyte sequence, copy it until we
+ reach its end, replacing each non-printable multibyte
+ character with a single question mark. */
+ {
+ mbstate_t mbstate = { 0, };
+ do
+ {
+ wchar_t wc;
+ size_t bytes;
+ int w;
+
+ bytes = mbrtowc (&wc, p, plimit - p, &mbstate);
+
+ if (bytes == (size_t) -1)
+ {
+ /* An invalid multibyte sequence was
+ encountered. Skip one input byte, and
+ put a question mark. */
+ p++;
+ *q++ = '?';
+ displayed_width += 1;
+ break;
+ }
+
+ if (bytes == (size_t) -2)
+ {
+ /* An incomplete multibyte character
+ at the end. Replace it entirely with
+ a question mark. */
+ p = plimit;
+ *q++ = '?';
+ displayed_width += 1;
+ break;
+ }
+
+ if (bytes == 0)
+ /* A null wide character was encountered. */
+ bytes = 1;
+
+ w = wcwidth (wc);
+ if (w >= 0)
+ {
+ /* A printable multibyte character.
+ Keep it. */
+ for (; bytes > 0; --bytes)
+ *q++ = *p++;
+ displayed_width += w;
+ }
+ else
+ {
+ /* An unprintable multibyte character.
+ Replace it entirely with a question
+ mark. */
+ p += bytes;
+ *q++ = '?';
+ displayed_width += 1;
+ }
+ }
+ while (! mbsinit (&mbstate));
+ }
+ break;
+ }
+
+ /* The buffer may have shrunk. */
+ len = q - buf;
+ }
+ else
+ {
+ char *p = buf;
+ char const *plimit = buf + len;
+
+ while (p < plimit)
+ {
+ if (! isprint (to_uchar (*p)))
+ *p = '?';
+ p++;
+ }
+ displayed_width = len;
+ }
+ }
+ else if (width != NULL)
+ {
+ if (MB_CUR_MAX > 1)
+ displayed_width = mbsnwidth (buf, len, 0);
+ else
+ {
+ char const *p = buf;
+ char const *plimit = buf + len;
+
+ displayed_width = 0;
+ while (p < plimit)
+ {
+ if (isprint (to_uchar (*p)))
+ displayed_width++;
+ p++;
+ }
+ }
+ }
+
+ /* Set padding to better align quoted items,
+ and also give a visual indication that quotes are
+ not actually part of the name. */
+ *pad = (align_variable_outer_quotes && cwd_some_quoted && ! quoted);
+
+ if (width != NULL)
+ *width = displayed_width;
+
+ *inbuf = buf;
+
+ return len;
+}
+
+static size_t
+quote_name_width (const char *name, struct quoting_options const *options,
+ int needs_general_quoting)
+{
+ char smallbuf[BUFSIZ];
+ char *buf = smallbuf;
+ size_t width;
+ bool pad;
+
+ quote_name_buf (&buf, sizeof smallbuf, (char *) name, options,
+ needs_general_quoting, &width, &pad);
+
+ if (buf != smallbuf && buf != name)
+ free (buf);
+
+ width += pad;
+
+ return width;
+}
+
+/* %XX escape any input out of range as defined in RFC3986,
+ and also if PATH, convert all path separators to '/'. */
+static char *
+file_escape (const char *str, bool path)
+{
+ char *esc = xnmalloc (3, strlen (str) + 1);
+ char *p = esc;
+ while (*str)
+ {
+ if (path && ISSLASH (*str))
+ {
+ *p++ = '/';
+ str++;
+ }
+ else if (RFC3986[to_uchar (*str)])
+ *p++ = *str++;
+ else
+ p += sprintf (p, "%%%02x", to_uchar (*str++));
+ }
+ *p = '\0';
+ return esc;
+}
+
+static size_t
+quote_name (char const *name, struct quoting_options const *options,
+ int needs_general_quoting, const struct bin_str *color,
+ bool allow_pad, struct obstack *stack, char const *absolute_name)
+{
+ char smallbuf[BUFSIZ];
+ char *buf = smallbuf;
+ size_t len;
+ bool pad;
+
+ len = quote_name_buf (&buf, sizeof smallbuf, (char *) name, options,
+ needs_general_quoting, NULL, &pad);
+
+ if (pad && allow_pad)
+ DIRED_PUTCHAR (' ');
+
+ if (color)
+ print_color_indicator (color);
+
+ /* If we're padding, then don't include the outer quotes in
+ the --hyperlink, to improve the alignment of those links. */
+ bool skip_quotes = false;
+
+ if (absolute_name)
+ {
+ if (align_variable_outer_quotes && cwd_some_quoted && ! pad)
+ {
+ skip_quotes = true;
+ putchar (*buf);
+ }
+ char *h = file_escape (hostname, /* path= */ false);
+ char *n = file_escape (absolute_name, /* path= */ true);
+ /* TODO: It would be good to be able to define parameters
+ to give hints to the terminal as how best to render the URI.
+ For example since ls is outputting a dense block of URIs
+ it would be best to not underline by default, and only
+ do so upon hover etc. */
+ printf ("\033]8;;file://%s%s%s\a", h, *n == '/' ? "" : "/", n);
+ free (h);
+ free (n);
+ }
+
+ if (stack)
+ PUSH_CURRENT_DIRED_POS (stack);
+
+ fwrite (buf + skip_quotes, 1, len - (skip_quotes * 2), stdout);
+
+ dired_pos += len;
+
+ if (stack)
+ PUSH_CURRENT_DIRED_POS (stack);
+
+ if (absolute_name)
+ {
+ fputs ("\033]8;;\a", stdout);
+ if (skip_quotes)
+ putchar (*(buf + len - 1));
+ }
+
+ if (buf != smallbuf && buf != name)
+ free (buf);
+
+ return len + pad;
+}
+
+static size_t
+print_name_with_quoting (const struct fileinfo *f,
+ bool symlink_target,
+ struct obstack *stack,
+ size_t start_col)
+{
+ const char* name = symlink_target ? f->linkname : f->name;
+
+ const struct bin_str *color = print_with_color ?
+ get_color_indicator (f, symlink_target) : NULL;
+
+ bool used_color_this_time = (print_with_color
+ && (color || is_colored (C_NORM)));
+
+ size_t len = quote_name (name, filename_quoting_options, f->quoted,
+ color, !symlink_target, stack, f->absolute_name);
+
+ process_signals ();
+ if (used_color_this_time)
+ {
+ prep_non_filename_text ();
+
+ /* We use the byte length rather than display width here as
+ an optimization to avoid accurately calculating the width,
+ because we only output the clear to EOL sequence if the name
+ _might_ wrap to the next line. This may output a sequence
+ unnecessarily in multi-byte locales for example,
+ but in that case it's inconsequential to the output. */
+ if (line_length
+ && (start_col / line_length != (start_col + len - 1) / line_length))
+ put_indicator (&color_indicator[C_CLR_TO_EOL]);
+ }
+
+ return len;
+}
+
+static void
+prep_non_filename_text (void)
+{
+ if (color_indicator[C_END].string != NULL)
+ put_indicator (&color_indicator[C_END]);
+ else
+ {
+ put_indicator (&color_indicator[C_LEFT]);
+ put_indicator (&color_indicator[C_RESET]);
+ put_indicator (&color_indicator[C_RIGHT]);
+ }
+}
+
+/* Print the file name of 'f' with appropriate quoting.
+ Also print file size, inode number, and filetype indicator character,
+ as requested by switches. */
+
+static size_t
+print_file_name_and_frills (const struct fileinfo *f, size_t start_col)
+{
+ char buf[MAX (LONGEST_HUMAN_READABLE + 1, INT_BUFSIZE_BOUND (uintmax_t))];
+
+ set_normal_color ();
+
+ if (print_inode)
+ printf ("%*s ", format == with_commas ? 0 : inode_number_width,
+ format_inode (buf, sizeof buf, f));
+
+ if (print_block_size)
+ printf ("%*s ", format == with_commas ? 0 : block_size_width,
+ ! f->stat_ok ? "?"
+ : human_readable (ST_NBLOCKS (f->stat), buf, human_output_opts,
+ ST_NBLOCKSIZE, output_block_size));
+
+ if (print_scontext)
+ printf ("%*s ", format == with_commas ? 0 : scontext_width, f->scontext);
+
+ size_t width = print_name_with_quoting (f, false, NULL, start_col);
+
+ if (indicator_style != none)
+ width += print_type_indicator (f->stat_ok, f->stat.st_mode, f->filetype);
+
+ return width;
+}
+
+/* Given these arguments describing a file, return the single-byte
+ type indicator, or 0. */
+static char
+get_type_indicator (bool stat_ok, mode_t mode, enum filetype type)
+{
+ char c;
+
+ if (stat_ok ? S_ISREG (mode) : type == normal)
+ {
+ if (stat_ok && indicator_style == classify && (mode & S_IXUGO))
+ c = '*';
+ else
+ c = 0;
+ }
+ else
+ {
+ if (stat_ok ? S_ISDIR (mode) : type == directory || type == arg_directory)
+ c = '/';
+ else if (indicator_style == slash)
+ c = 0;
+ else if (stat_ok ? S_ISLNK (mode) : type == symbolic_link)
+ c = '@';
+ else if (stat_ok ? S_ISFIFO (mode) : type == fifo)
+ c = '|';
+ else if (stat_ok ? S_ISSOCK (mode) : type == sock)
+ c = '=';
+ else if (stat_ok && S_ISDOOR (mode))
+ c = '>';
+ else
+ c = 0;
+ }
+ return c;
+}
+
+static bool
+print_type_indicator (bool stat_ok, mode_t mode, enum filetype type)
+{
+ char c = get_type_indicator (stat_ok, mode, type);
+ if (c)
+ DIRED_PUTCHAR (c);
+ return !!c;
+}
+
+/* Returns if color sequence was printed. */
+static bool
+print_color_indicator (const struct bin_str *ind)
+{
+ if (ind)
+ {
+ /* Need to reset so not dealing with attribute combinations */
+ if (is_colored (C_NORM))
+ restore_default_color ();
+ put_indicator (&color_indicator[C_LEFT]);
+ put_indicator (ind);
+ put_indicator (&color_indicator[C_RIGHT]);
+ }
+
+ return ind != NULL;
+}
+
+/* Returns color indicator or NULL if none. */
+static const struct bin_str* _GL_ATTRIBUTE_PURE
+get_color_indicator (const struct fileinfo *f, bool symlink_target)
+{
+ enum indicator_no type;
+ struct color_ext_type *ext; /* Color extension */
+ size_t len; /* Length of name */
+
+ const char* name;
+ mode_t mode;
+ int linkok;
+ if (symlink_target)
+ {
+ name = f->linkname;
+ mode = f->linkmode;
+ linkok = f->linkok ? 0 : -1;
+ }
+ else
+ {
+ name = f->name;
+ mode = FILE_OR_LINK_MODE (f);
+ linkok = f->linkok;
+ }
+
+ /* Is this a nonexistent file? If so, linkok == -1. */
+
+ if (linkok == -1 && is_colored (C_MISSING))
+ type = C_MISSING;
+ else if (!f->stat_ok)
+ {
+ static enum indicator_no filetype_indicator[] = FILETYPE_INDICATORS;
+ type = filetype_indicator[f->filetype];
+ }
+ else
+ {
+ if (S_ISREG (mode))
+ {
+ type = C_FILE;
+
+ if ((mode & S_ISUID) != 0 && is_colored (C_SETUID))
+ type = C_SETUID;
+ else if ((mode & S_ISGID) != 0 && is_colored (C_SETGID))
+ type = C_SETGID;
+ else if (is_colored (C_CAP) && f->has_capability)
+ type = C_CAP;
+ else if ((mode & S_IXUGO) != 0 && is_colored (C_EXEC))
+ type = C_EXEC;
+ else if ((1 < f->stat.st_nlink) && is_colored (C_MULTIHARDLINK))
+ type = C_MULTIHARDLINK;
+ }
+ else if (S_ISDIR (mode))
+ {
+ type = C_DIR;
+
+ if ((mode & S_ISVTX) && (mode & S_IWOTH)
+ && is_colored (C_STICKY_OTHER_WRITABLE))
+ type = C_STICKY_OTHER_WRITABLE;
+ else if ((mode & S_IWOTH) != 0 && is_colored (C_OTHER_WRITABLE))
+ type = C_OTHER_WRITABLE;
+ else if ((mode & S_ISVTX) != 0 && is_colored (C_STICKY))
+ type = C_STICKY;
+ }
+ else if (S_ISLNK (mode))
+ type = C_LINK;
+ else if (S_ISFIFO (mode))
+ type = C_FIFO;
+ else if (S_ISSOCK (mode))
+ type = C_SOCK;
+ else if (S_ISBLK (mode))
+ type = C_BLK;
+ else if (S_ISCHR (mode))
+ type = C_CHR;
+ else if (S_ISDOOR (mode))
+ type = C_DOOR;
+ else
+ {
+ /* Classify a file of some other type as C_ORPHAN. */
+ type = C_ORPHAN;
+ }
+ }
+
+ /* Check the file's suffix only if still classified as C_FILE. */
+ ext = NULL;
+ if (type == C_FILE)
+ {
+ /* Test if NAME has a recognized suffix. */
+
+ len = strlen (name);
+ name += len; /* Pointer to final \0. */
+ for (ext = color_ext_list; ext != NULL; ext = ext->next)
+ {
+ if (ext->ext.len <= len
+ && c_strncasecmp (name - ext->ext.len, ext->ext.string,
+ ext->ext.len) == 0)
+ break;
+ }
+ }
+
+ /* Adjust the color for orphaned symlinks. */
+ if (type == C_LINK && !linkok)
+ {
+ if (color_symlink_as_referent || is_colored (C_ORPHAN))
+ type = C_ORPHAN;
+ }
+
+ const struct bin_str *const s
+ = ext ? &(ext->seq) : &color_indicator[type];
+
+ return s->string ? s : NULL;
+}
+
+/* Output a color indicator (which may contain nulls). */
+static void
+put_indicator (const struct bin_str *ind)
+{
+ if (! used_color)
+ {
+ used_color = true;
+
+ /* If the standard output is a controlling terminal, watch out
+ for signals, so that the colors can be restored to the
+ default state if "ls" is suspended or interrupted. */
+
+ if (0 <= tcgetpgrp (STDOUT_FILENO))
+ signal_init ();
+
+ prep_non_filename_text ();
+ }
+
+ fwrite (ind->string, ind->len, 1, stdout);
+}
+
+static size_t
+length_of_file_name_and_frills (const struct fileinfo *f)
+{
+ size_t len = 0;
+ char buf[MAX (LONGEST_HUMAN_READABLE + 1, INT_BUFSIZE_BOUND (uintmax_t))];
+
+ if (print_inode)
+ len += 1 + (format == with_commas
+ ? strlen (umaxtostr (f->stat.st_ino, buf))
+ : inode_number_width);
+
+ if (print_block_size)
+ len += 1 + (format == with_commas
+ ? strlen (! f->stat_ok ? "?"
+ : human_readable (ST_NBLOCKS (f->stat), buf,
+ human_output_opts, ST_NBLOCKSIZE,
+ output_block_size))
+ : block_size_width);
+
+ if (print_scontext)
+ len += 1 + (format == with_commas ? strlen (f->scontext) : scontext_width);
+
+ len += quote_name_width (f->name, filename_quoting_options, f->quoted);
+
+ if (indicator_style != none)
+ {
+ char c = get_type_indicator (f->stat_ok, f->stat.st_mode, f->filetype);
+ len += (c != 0);
+ }
+
+ return len;
+}
+
+static void
+print_many_per_line (void)
+{
+ size_t row; /* Current row. */
+ size_t cols = calculate_columns (true);
+ struct column_info const *line_fmt = &column_info[cols - 1];
+
+ /* Calculate the number of rows that will be in each column except possibly
+ for a short column on the right. */
+ size_t rows = cwd_n_used / cols + (cwd_n_used % cols != 0);
+
+ for (row = 0; row < rows; row++)
+ {
+ size_t col = 0;
+ size_t filesno = row;
+ size_t pos = 0;
+
+ /* Print the next row. */
+ while (1)
+ {
+ struct fileinfo const *f = sorted_file[filesno];
+ size_t name_length = length_of_file_name_and_frills (f);
+ size_t max_name_length = line_fmt->col_arr[col++];
+ print_file_name_and_frills (f, pos);
+
+ filesno += rows;
+ if (filesno >= cwd_n_used)
+ break;
+
+ indent (pos + name_length, pos + max_name_length);
+ pos += max_name_length;
+ }
+ putchar ('\n');
+ }
+}
+
+static void
+print_horizontal (void)
+{
+ size_t filesno;
+ size_t pos = 0;
+ size_t cols = calculate_columns (false);
+ struct column_info const *line_fmt = &column_info[cols - 1];
+ struct fileinfo const *f = sorted_file[0];
+ size_t name_length = length_of_file_name_and_frills (f);
+ size_t max_name_length = line_fmt->col_arr[0];
+
+ /* Print first entry. */
+ print_file_name_and_frills (f, 0);
+
+ /* Now the rest. */
+ for (filesno = 1; filesno < cwd_n_used; ++filesno)
+ {
+ size_t col = filesno % cols;
+
+ if (col == 0)
+ {
+ putchar ('\n');
+ pos = 0;
+ }
+ else
+ {
+ indent (pos + name_length, pos + max_name_length);
+ pos += max_name_length;
+ }
+
+ f = sorted_file[filesno];
+ print_file_name_and_frills (f, pos);
+
+ name_length = length_of_file_name_and_frills (f);
+ max_name_length = line_fmt->col_arr[col];
+ }
+ putchar ('\n');
+}
+
+/* Output name + SEP + ' '. */
+
+static void
+print_with_separator (char sep)
+{
+ size_t filesno;
+ size_t pos = 0;
+
+ for (filesno = 0; filesno < cwd_n_used; filesno++)
+ {
+ struct fileinfo const *f = sorted_file[filesno];
+ size_t len = line_length ? length_of_file_name_and_frills (f) : 0;
+
+ if (filesno != 0)
+ {
+ char separator;
+
+ if (! line_length
+ || ((pos + len + 2 < line_length)
+ && (pos <= SIZE_MAX - len - 2)))
+ {
+ pos += 2;
+ separator = ' ';
+ }
+ else
+ {
+ pos = 0;
+ separator = '\n';
+ }
+
+ putchar (sep);
+ putchar (separator);
+ }
+
+ print_file_name_and_frills (f, pos);
+ pos += len;
+ }
+ putchar ('\n');
+}
+
+/* Assuming cursor is at position FROM, indent up to position TO.
+ Use a TAB character instead of two or more spaces whenever possible. */
+
+static void
+indent (size_t from, size_t to)
+{
+ while (from < to)
+ {
+ if (tabsize != 0 && to / tabsize > (from + 1) / tabsize)
+ {
+ putchar ('\t');
+ from += tabsize - from % tabsize;
+ }
+ else
+ {
+ putchar (' ');
+ from++;
+ }
+ }
+}
+
+/* Put DIRNAME/NAME into DEST, handling '.' and '/' properly. */
+/* FIXME: maybe remove this function someday. See about using a
+ non-malloc'ing version of file_name_concat. */
+
+static void
+attach (char *dest, const char *dirname, const char *name)
+{
+ const char *dirnamep = dirname;
+
+ /* Copy dirname if it is not ".". */
+ if (dirname[0] != '.' || dirname[1] != 0)
+ {
+ while (*dirnamep)
+ *dest++ = *dirnamep++;
+ /* Add '/' if 'dirname' doesn't already end with it. */
+ if (dirnamep > dirname && dirnamep[-1] != '/')
+ *dest++ = '/';
+ }
+ while (*name)
+ *dest++ = *name++;
+ *dest = 0;
+}
+
+/* Allocate enough column info suitable for the current number of
+ files and display columns, and initialize the info to represent the
+ narrowest possible columns. */
+
+static void
+init_column_info (void)
+{
+ size_t i;
+ size_t max_cols = MIN (max_idx, cwd_n_used);
+
+ /* Currently allocated columns in column_info. */
+ static size_t column_info_alloc;
+
+ if (column_info_alloc < max_cols)
+ {
+ size_t new_column_info_alloc;
+ size_t *p;
+
+ if (max_cols < max_idx / 2)
+ {
+ /* The number of columns is far less than the display width
+ allows. Grow the allocation, but only so that it's
+ double the current requirements. If the display is
+ extremely wide, this avoids allocating a lot of memory
+ that is never needed. */
+ column_info = xnrealloc (column_info, max_cols,
+ 2 * sizeof *column_info);
+ new_column_info_alloc = 2 * max_cols;
+ }
+ else
+ {
+ column_info = xnrealloc (column_info, max_idx, sizeof *column_info);
+ new_column_info_alloc = max_idx;
+ }
+
+ /* Allocate the new size_t objects by computing the triangle
+ formula n * (n + 1) / 2, except that we don't need to
+ allocate the part of the triangle that we've already
+ allocated. Check for address arithmetic overflow. */
+ {
+ size_t column_info_growth = new_column_info_alloc - column_info_alloc;
+ size_t s = column_info_alloc + 1 + new_column_info_alloc;
+ size_t t = s * column_info_growth;
+ if (s < new_column_info_alloc || t / column_info_growth != s)
+ xalloc_die ();
+ p = xnmalloc (t / 2, sizeof *p);
+ }
+
+ /* Grow the triangle by parceling out the cells just allocated. */
+ for (i = column_info_alloc; i < new_column_info_alloc; i++)
+ {
+ column_info[i].col_arr = p;
+ p += i + 1;
+ }
+
+ column_info_alloc = new_column_info_alloc;
+ }
+
+ for (i = 0; i < max_cols; ++i)
+ {
+ size_t j;
+
+ column_info[i].valid_len = true;
+ column_info[i].line_len = (i + 1) * MIN_COLUMN_WIDTH;
+ for (j = 0; j <= i; ++j)
+ column_info[i].col_arr[j] = MIN_COLUMN_WIDTH;
+ }
+}
+
+/* Calculate the number of columns needed to represent the current set
+ of files in the current display width. */
+
+static size_t
+calculate_columns (bool by_columns)
+{
+ size_t filesno; /* Index into cwd_file. */
+ size_t cols; /* Number of files across. */
+
+ /* Normally the maximum number of columns is determined by the
+ screen width. But if few files are available this might limit it
+ as well. */
+ size_t max_cols = MIN (max_idx, cwd_n_used);
+
+ init_column_info ();
+
+ /* Compute the maximum number of possible columns. */
+ for (filesno = 0; filesno < cwd_n_used; ++filesno)
+ {
+ struct fileinfo const *f = sorted_file[filesno];
+ size_t name_length = length_of_file_name_and_frills (f);
+
+ for (size_t i = 0; i < max_cols; ++i)
+ {
+ if (column_info[i].valid_len)
+ {
+ size_t idx = (by_columns
+ ? filesno / ((cwd_n_used + i) / (i + 1))
+ : filesno % (i + 1));
+ size_t real_length = name_length + (idx == i ? 0 : 2);
+
+ if (column_info[i].col_arr[idx] < real_length)
+ {
+ column_info[i].line_len += (real_length
+ - column_info[i].col_arr[idx]);
+ column_info[i].col_arr[idx] = real_length;
+ column_info[i].valid_len = (column_info[i].line_len
+ < line_length);
+ }
+ }
+ }
+ }
+
+ /* Find maximum allowed columns. */
+ for (cols = max_cols; 1 < cols; --cols)
+ {
+ if (column_info[cols - 1].valid_len)
+ break;
+ }
+
+ return cols;
+}
+
+void
+usage (int status)
+{
+ if (status != EXIT_SUCCESS)
+ emit_try_help ();
+ else
+ {
+ printf (_("Usage: %s [OPTION]... [FILE]...\n"), program_name);
+ fputs (_("\
+List information about the FILEs (the current directory by default).\n\
+Sort entries alphabetically if none of -cftuvSUX nor --sort is specified.\n\
+"), stdout);
+
+ emit_mandatory_arg_note ();
+
+ fputs (_("\
+ -a, --all do not ignore entries starting with .\n\
+ -A, --almost-all do not list implied . and ..\n\
+ --author with -l, print the author of each file\n\
+ -b, --escape print C-style escapes for nongraphic characters\n\
+"), stdout);
+ fputs (_("\
+ --block-size=SIZE with -l, scale sizes by SIZE when printing them;\n\
+ e.g., '--block-size=M'; see SIZE format below\n\
+"), stdout);
+ fputs (_("\
+ -B, --ignore-backups do not list implied entries ending with ~\n\
+ -c with -lt: sort by, and show, ctime (time of last\n\
+ modification of file status information);\n\
+ with -l: show ctime and sort by name;\n\
+ otherwise: sort by ctime, newest first\n\
+"), stdout);
+ fputs (_("\
+ -C list entries by columns\n\
+ --color[=WHEN] colorize the output; WHEN can be 'always' (default\
+\n\
+ if omitted), 'auto', or 'never'; more info below\
+\n\
+ -d, --directory list directories themselves, not their contents\n\
+ -D, --dired generate output designed for Emacs' dired mode\n\
+"), stdout);
+ fputs (_("\
+ -f do not sort, enable -aU, disable -ls --color\n\
+ -F, --classify append indicator (one of */=>@|) to entries\n\
+ --file-type likewise, except do not append '*'\n\
+ --format=WORD across -x, commas -m, horizontal -x, long -l,\n\
+ single-column -1, verbose -l, vertical -C\n\
+ --full-time like -l --time-style=full-iso\n\
+"), stdout);
+ fputs (_("\
+ -g like -l, but do not list owner\n\
+"), stdout);
+ fputs (_("\
+ --group-directories-first\n\
+ group directories before files;\n\
+ can be augmented with a --sort option, but any\n\
+ use of --sort=none (-U) disables grouping\n\
+"), stdout);
+ fputs (_("\
+ -G, --no-group in a long listing, don't print group names\n\
+"), stdout);
+ fputs (_("\
+ -h, --human-readable with -l and -s, print sizes like 1K 234M 2G etc.\n\
+ --si likewise, but use powers of 1000 not 1024\n\
+"), stdout);
+ fputs (_("\
+ -H, --dereference-command-line\n\
+ follow symbolic links listed on the command line\n\
+ --dereference-command-line-symlink-to-dir\n\
+ follow each command line symbolic link\n\
+ that points to a directory\n\
+ --hide=PATTERN do not list implied entries matching shell PATTERN\
+\n\
+ (overridden by -a or -A)\n\
+"), stdout);
+ fputs (_("\
+ --hyperlink[=WHEN] hyperlink file names; WHEN can be 'always'\n\
+ (default if omitted), 'auto', or 'never'\n\
+"), stdout);
+ fputs (_("\
+ --indicator-style=WORD append indicator with style WORD to entry names:\
+\n\
+ none (default), slash (-p),\n\
+ file-type (--file-type), classify (-F)\n\
+ -i, --inode print the index number of each file\n\
+ -I, --ignore=PATTERN do not list implied entries matching shell PATTERN\
+\n\
+"), stdout);
+ fputs (_("\
+ -k, --kibibytes default to 1024-byte blocks for disk usage;\n\
+ used only with -s and per directory totals\n\
+"), stdout);
+ fputs (_("\
+ -l use a long listing format\n\
+ -L, --dereference when showing file information for a symbolic\n\
+ link, show information for the file the link\n\
+ references rather than for the link itself\n\
+ -m fill width with a comma separated list of entries\
+\n\
+"), stdout);
+ fputs (_("\
+ -n, --numeric-uid-gid like -l, but list numeric user and group IDs\n\
+ -N, --literal print entry names without quoting\n\
+ -o like -l, but do not list group information\n\
+ -p, --indicator-style=slash\n\
+ append / indicator to directories\n\
+"), stdout);
+ fputs (_("\
+ -q, --hide-control-chars print ? instead of nongraphic characters\n\
+ --show-control-chars show nongraphic characters as-is (the default,\n\
+ unless program is 'ls' and output is a terminal)\
+\n\
+ -Q, --quote-name enclose entry names in double quotes\n\
+ --quoting-style=WORD use quoting style WORD for entry names:\n\
+ literal, locale, shell, shell-always,\n\
+ shell-escape, shell-escape-always, c, escape\n\
+ (overrides QUOTING_STYLE environment variable)\n\
+"), stdout);
+ fputs (_("\
+ -r, --reverse reverse order while sorting\n\
+ -R, --recursive list subdirectories recursively\n\
+ -s, --size print the allocated size of each file, in blocks\n\
+"), stdout);
+ fputs (_("\
+ -S sort by file size, largest first\n\
+ --sort=WORD sort by WORD instead of name: none (-U), size (-S)\
+,\n\
+ time (-t), version (-v), extension (-X)\n\
+ --time=WORD change the default of using modification times;\n\
+ access time (-u): atime, access, use;\n\
+ change time (-c): ctime, status;\n\
+ birth time: birth, creation;\n\
+ with -l, WORD determines which time to show;\n\
+ with --sort=time, sort by WORD (newest first)\n\
+"), stdout);
+ fputs (_("\
+ --time-style=TIME_STYLE time/date format with -l; see TIME_STYLE below\n\
+"), stdout);
+ fputs (_("\
+ -t sort by time, newest first; see --time\n\
+ -T, --tabsize=COLS assume tab stops at each COLS instead of 8\n\
+"), stdout);
+ fputs (_("\
+ -u with -lt: sort by, and show, access time;\n\
+ with -l: show access time and sort by name;\n\
+ otherwise: sort by access time, newest first\n\
+ -U do not sort; list entries in directory order\n\
+ -v natural sort of (version) numbers within text\n\
+"), stdout);
+ fputs (_("\
+ -w, --width=COLS set output width to COLS. 0 means no limit\n\
+ -x list entries by lines instead of by columns\n\
+ -X sort alphabetically by entry extension\n\
+ -Z, --context print any security context of each file\n\
+ -1 list one file per line. Avoid '\\n' with -q or -b\
+\n\
+"), stdout);
+ fputs (HELP_OPTION_DESCRIPTION, stdout);
+ fputs (VERSION_OPTION_DESCRIPTION, stdout);
+ emit_size_note ();
+ fputs (_("\
+\n\
+The TIME_STYLE argument can be full-iso, long-iso, iso, locale, or +FORMAT.\n\
+FORMAT is interpreted like in date(1). If FORMAT is FORMAT1<newline>FORMAT2,\n\
+then FORMAT1 applies to non-recent files and FORMAT2 to recent files.\n\
+TIME_STYLE prefixed with 'posix-' takes effect only outside the POSIX locale.\n\
+Also the TIME_STYLE environment variable sets the default style to use.\n\
+"), stdout);
+ fputs (_("\
+\n\
+Using color to distinguish file types is disabled both by default and\n\
+with --color=never. With --color=auto, ls emits color codes only when\n\
+standard output is connected to a terminal. The LS_COLORS environment\n\
+variable can change the settings. Use the dircolors command to set it.\n\
+"), stdout);
+ fputs (_("\
+\n\
+Exit status:\n\
+ 0 if OK,\n\
+ 1 if minor problems (e.g., cannot access subdirectory),\n\
+ 2 if serious trouble (e.g., cannot access command-line argument).\n\
+"), stdout);
+ emit_ancillary_info (PROGRAM_NAME);
+ }
+ exit (status);
+}
Index: coreutils-8.32-new/src
===================================================================
--- coreutils-8.32-new/src (nonexistent)
+++ coreutils-8.32-new/src (revision 5)
Property changes on: coreutils-8.32-new/src
___________________________________________________________________
Added: svn:ignore
## -0,0 +1,73 ##
+
+# install dir
+dist
+
+# Target build dirs
+.a1x-newlib
+.a2x-newlib
+.at91sam7s-newlib
+
+.build-machine
+
+.a1x-glibc
+.a2x-glibc
+.h3-glibc
+.h5-glibc
+.i586-glibc
+.i686-glibc
+.imx6-glibc
+.jz47xx-glibc
+.makefile
+.am335x-glibc
+.omap543x-glibc
+.p5600-glibc
+.power8-glibc
+.power8le-glibc
+.power9-glibc
+.power9le-glibc
+.m1000-glibc
+.riscv64-glibc
+.rk328x-glibc
+.rk33xx-glibc
+.rk339x-glibc
+.s8xx-glibc
+.s9xx-glibc
+.x86_64-glibc
+
+# Hidden files (each file)
+.makefile
+.dist
+.rootfs
+
+# src & hw requires
+.src_requires
+.src_requires_depend
+.requires
+.requires_depend
+
+# Tarballs
+*.gz
+*.bz2
+*.lz
+*.xz
+*.tgz
+*.txz
+
+# Signatures
+*.asc
+*.sig
+*.sign
+*.sha1sum
+
+# Patches
+*.patch
+
+# Descriptions
+*.dsc
+*.txt
+
+# Default linux config files
+*.defconfig
+
+# backup copies
+*~
Index: coreutils-8.32-new
===================================================================
--- coreutils-8.32-new (nonexistent)
+++ coreutils-8.32-new (revision 5)
Property changes on: coreutils-8.32-new
___________________________________________________________________
Added: svn:ignore
## -0,0 +1,73 ##
+
+# install dir
+dist
+
+# Target build dirs
+.a1x-newlib
+.a2x-newlib
+.at91sam7s-newlib
+
+.build-machine
+
+.a1x-glibc
+.a2x-glibc
+.h3-glibc
+.h5-glibc
+.i586-glibc
+.i686-glibc
+.imx6-glibc
+.jz47xx-glibc
+.makefile
+.am335x-glibc
+.omap543x-glibc
+.p5600-glibc
+.power8-glibc
+.power8le-glibc
+.power9-glibc
+.power9le-glibc
+.m1000-glibc
+.riscv64-glibc
+.rk328x-glibc
+.rk33xx-glibc
+.rk339x-glibc
+.s8xx-glibc
+.s9xx-glibc
+.x86_64-glibc
+
+# Hidden files (each file)
+.makefile
+.dist
+.rootfs
+
+# src & hw requires
+.src_requires
+.src_requires_depend
+.requires
+.requires_depend
+
+# Tarballs
+*.gz
+*.bz2
+*.lz
+*.xz
+*.tgz
+*.txz
+
+# Signatures
+*.asc
+*.sig
+*.sign
+*.sha1sum
+
+# Patches
+*.patch
+
+# Descriptions
+*.dsc
+*.txt
+
+# Default linux config files
+*.defconfig
+
+# backup copies
+*~
Index: create.patch.sh
===================================================================
--- create.patch.sh (nonexistent)
+++ create.patch.sh (revision 5)
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+VERSION=8.32
+
+tar --files-from=file.list -xJvf ../coreutils-$VERSION.tar.xz
+mv coreutils-$VERSION coreutils-$VERSION-orig
+
+cp -rf ./coreutils-$VERSION-new ./coreutils-$VERSION
+
+diff --unified -Nr coreutils-$VERSION-orig coreutils-$VERSION > coreutils-$VERSION-syscall64-ls.patch
+
+mv coreutils-$VERSION-syscall64-ls.patch ../patches
+
+rm -rf ./coreutils-$VERSION
+rm -rf ./coreutils-$VERSION-orig
Property changes on: create.patch.sh
___________________________________________________________________
Added: svn:executable
## -0,0 +1 ##
+*
\ No newline at end of property
Index: file.list
===================================================================
--- file.list (nonexistent)
+++ file.list (revision 5)
@@ -0,0 +1 @@
+coreutils-8.32/src/ls.c
Index: .
===================================================================
--- . (nonexistent)
+++ . (revision 5)
Property changes on: .
___________________________________________________________________
Added: svn:ignore
## -0,0 +1,73 ##
+
+# install dir
+dist
+
+# Target build dirs
+.a1x-newlib
+.a2x-newlib
+.at91sam7s-newlib
+
+.build-machine
+
+.a1x-glibc
+.a2x-glibc
+.h3-glibc
+.h5-glibc
+.i586-glibc
+.i686-glibc
+.imx6-glibc
+.jz47xx-glibc
+.makefile
+.am335x-glibc
+.omap543x-glibc
+.p5600-glibc
+.power8-glibc
+.power8le-glibc
+.power9-glibc
+.power9le-glibc
+.m1000-glibc
+.riscv64-glibc
+.rk328x-glibc
+.rk33xx-glibc
+.rk339x-glibc
+.s8xx-glibc
+.s9xx-glibc
+.x86_64-glibc
+
+# Hidden files (each file)
+.makefile
+.dist
+.rootfs
+
+# src & hw requires
+.src_requires
+.src_requires_depend
+.requires
+.requires_depend
+
+# Tarballs
+*.gz
+*.bz2
+*.lz
+*.xz
+*.tgz
+*.txz
+
+# Signatures
+*.asc
+*.sig
+*.sign
+*.sha1sum
+
+# Patches
+*.patch
+
+# Descriptions
+*.dsc
+*.txt
+
+# Default linux config files
+*.defconfig
+
+# backup copies
+*~
Radix cross Linux
The main Radix cross Linux repository contains the build scripts of packages, which have the most complete and common functionality for desktop machines
452 Commits
2 Branches
1 Tag