1 /* `dir', `vdir' and `ls' directory listing programs for GNU.
2 Copyright (C) 1985, 1988, 1990-1991, 1995-2010 Free Software Foundation,
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 /* If ls_mode is LS_MULTI_COL,
19 the multi-column format is the default regardless
20 of the type of output device.
21 This is for the `dir' program.
23 If ls_mode is LS_LONG_FORMAT,
24 the long format is the default regardless of the
25 type of output device.
26 This is for the `vdir' program.
29 the output format depends on whether the output
31 This is for the `ls' program. */
33 /* Written by Richard Stallman and David MacKenzie. */
35 /* Color support by Peter Anvin <Peter.Anvin@linux.org> and Dennis
36 Flaherty <dennisf@denix.elk.miles.com> based on original patches by
37 Greg Lee <lee@uhunix.uhcc.hawaii.edu>. */
40 #include <sys/types.h>
49 # include <sys/ioctl.h>
52 #ifdef WINSIZE_IN_PTEM
53 # include <sys/stream.h>
54 # include <sys/ptem.h>
64 #include <selinux/selinux.h>
67 #if HAVE_LANGINFO_CODESET
68 # include <langinfo.h>
71 /* Use SA_NOCLDSTOP as a proxy for whether the sigaction machinery is
74 # define SA_NOCLDSTOP 0
75 # define sigprocmask(How, Set, Oset) /* empty */
77 # if ! HAVE_SIGINTERRUPT
78 # define siginterrupt(sig, flag) /* empty */
92 #include "filenamecat.h"
93 #include "hard-locale.h"
97 #include "filevercmp.h"
100 #include "mbswidth.h"
104 #include "quotearg.h"
106 #include "stat-time.h"
107 #include "strftime.h"
109 #include "areadlink.h"
110 #include "mbsalign.h"
112 /* Include <sys/capability.h> last to avoid a clash of <sys/types.h>
113 include guards with some premature versions of libcap.
114 For more details, see <http://bugzilla.redhat.com/483548>. */
116 # include <sys/capability.h>
119 #define PROGRAM_NAME (ls_mode == LS_LS ? "ls" \
120 : (ls_mode == LS_MULTI_COL \
124 proper_name ("Richard M. Stallman"), \
125 proper_name ("David MacKenzie")
127 #define obstack_chunk_alloc malloc
128 #define obstack_chunk_free free
130 /* Return an int indicating the result of comparing two integers.
131 Subtracting doesn't always work, due to overflow. */
132 #define longdiff(a, b) ((a) < (b) ? -1 : (a) > (b))
134 /* Unix-based readdir implementations have historically returned a dirent.d_ino
135 value that is sometimes not equal to the stat-obtained st_ino value for
136 that same entry. This error occurs for a readdir entry that refers
137 to a mount point. readdir's error is to return the inode number of
138 the underlying directory -- one that typically cannot be stat'ed, as
139 long as a file system is mounted on that directory. RELIABLE_D_INO
140 encapsulates whether we can use the more efficient approach of relying
141 on readdir-supplied d_ino values, or whether we must incur the cost of
142 calling stat or lstat to obtain each guaranteed-valid inode number. */
144 #ifndef READDIR_LIES_ABOUT_MOUNTPOINT_D_INO
145 # define READDIR_LIES_ABOUT_MOUNTPOINT_D_INO 1
148 #if READDIR_LIES_ABOUT_MOUNTPOINT_D_INO
149 # define RELIABLE_D_INO(dp) NOT_AN_INODE_NUMBER
151 # define RELIABLE_D_INO(dp) D_INO (dp)
154 #if ! HAVE_STRUCT_STAT_ST_AUTHOR
155 # define st_author st_uid
172 /* Display letters and indicators for each filetype.
173 Keep these in sync with enum filetype. */
174 static char const filetype_letter
[] = "?pcdb-lswd";
176 /* Ensure that filetype and filetype_letter have the same
177 number of elements. */
178 verify (sizeof filetype_letter
- 1 == arg_directory
+ 1);
180 #define FILETYPE_INDICATORS \
182 C_ORPHAN, C_FIFO, C_CHR, C_DIR, C_BLK, C_FILE, \
183 C_LINK, C_SOCK, C_FILE, C_DIR \
198 /* For symbolic link, name of the file linked to, otherwise zero. */
203 enum filetype filetype
;
205 /* For symbolic link and long listing, st_mode of file linked to, otherwise
209 /* SELinux security context. */
210 security_context_t scontext
;
214 /* For symbolic link and color printing, true if linked-to file
215 exists, otherwise false. */
218 /* For long listings, true if the file has an access control list,
219 or an SELinux security context. */
220 enum acl_type acl_type
;
222 /* For color listings, true if a regular file has capability info. */
226 #define LEN_STR_PAIR(s) sizeof (s) - 1, s
228 /* Null is a valid character in a color indicator (think about Epson
229 printers, for example) so we have to use a length/buffer string
234 size_t len
; /* Number of bytes */
235 const char *string
; /* Pointer to the same */
239 # define tcgetpgrp(Fd) 0
242 static size_t quote_name (FILE *out
, const char *name
,
243 struct quoting_options
const *options
,
245 static char *make_link_name (char const *name
, char const *linkname
);
246 static int decode_switches (int argc
, char **argv
);
247 static bool file_ignored (char const *name
);
248 static uintmax_t gobble_file (char const *name
, enum filetype type
,
249 ino_t inode
, bool command_line_arg
,
250 char const *dirname
);
251 static bool print_color_indicator (const struct fileinfo
*f
,
252 bool symlink_target
);
253 static void put_indicator (const struct bin_str
*ind
);
254 static void add_ignore_pattern (const char *pattern
);
255 static void attach (char *dest
, const char *dirname
, const char *name
);
256 static void clear_files (void);
257 static void extract_dirs_from_files (char const *dirname
,
258 bool command_line_arg
);
259 static void get_link_name (char const *filename
, struct fileinfo
*f
,
260 bool command_line_arg
);
261 static void indent (size_t from
, size_t to
);
262 static size_t calculate_columns (bool by_columns
);
263 static void print_current_files (void);
264 static void print_dir (char const *name
, char const *realname
,
265 bool command_line_arg
);
266 static size_t print_file_name_and_frills (const struct fileinfo
*f
,
268 static void print_horizontal (void);
269 static int format_user_width (uid_t u
);
270 static int format_group_width (gid_t g
);
271 static void print_long_format (const struct fileinfo
*f
);
272 static void print_many_per_line (void);
273 static size_t print_name_with_quoting (const struct fileinfo
*f
,
275 struct obstack
*stack
,
277 static void prep_non_filename_text (void);
278 static bool print_type_indicator (bool stat_ok
, mode_t mode
,
280 static void print_with_commas (void);
281 static void queue_directory (char const *name
, char const *realname
,
282 bool command_line_arg
);
283 static void sort_files (void);
284 static void parse_ls_color (void);
285 void usage (int status
);
287 /* Initial size of hash table.
288 Most hierarchies are likely to be shallower than this. */
289 #define INITIAL_TABLE_SIZE 30
291 /* The set of `active' directories, from the current command-line argument
292 to the level in the hierarchy at which files are being listed.
293 A directory is represented by its device and inode numbers (struct dev_ino).
294 A directory is added to this set when ls begins listing it or its
295 entries, and it is removed from the set just after ls has finished
296 processing it. This set is used solely to detect loops, e.g., with
297 mkdir loop; cd loop; ln -s ../loop sub; ls -RL */
298 static Hash_table
*active_dir_set
;
300 #define LOOP_DETECT (!!active_dir_set)
302 /* The table of files in the current directory:
304 `cwd_file' points to a vector of `struct fileinfo', one per file.
305 `cwd_n_alloc' is the number of elements space has been allocated for.
306 `cwd_n_used' is the number actually in use. */
308 /* Address of block containing the files that are described. */
309 static struct fileinfo
*cwd_file
;
311 /* Length of block that `cwd_file' points to, measured in files. */
312 static size_t cwd_n_alloc
;
314 /* Index of first unused slot in `cwd_file'. */
315 static size_t cwd_n_used
;
317 /* Vector of pointers to files, in proper sorted order, and the number
318 of entries allocated for it. */
319 static void **sorted_file
;
320 static size_t sorted_file_alloc
;
322 /* When true, in a color listing, color each symlink name according to the
323 type of file it points to. Otherwise, color them according to the `ln'
324 directive in LS_COLORS. Dangling (orphan) symlinks are treated specially,
325 regardless. This is set when `ln=target' appears in LS_COLORS. */
327 static bool color_symlink_as_referent
;
329 /* mode of appropriate file for colorization */
330 #define FILE_OR_LINK_MODE(File) \
331 ((color_symlink_as_referent && (File)->linkok) \
332 ? (File)->linkmode : (File)->stat.st_mode)
335 /* Record of one pending directory waiting to be listed. */
340 /* If the directory is actually the file pointed to by a symbolic link we
341 were told to list, `realname' will contain the name of the symbolic
342 link, otherwise zero. */
344 bool command_line_arg
;
345 struct pending
*next
;
348 static struct pending
*pending_dirs
;
350 /* Current time in seconds and nanoseconds since 1970, updated as
351 needed when deciding whether a file is recent. */
353 static struct timespec current_time
;
355 static bool print_scontext
;
356 static char UNKNOWN_SECURITY_CONTEXT
[] = "?";
358 /* Whether any of the files has an ACL. This affects the width of the
361 static bool any_has_acl
;
363 /* The number of columns to use for columns containing inode numbers,
364 block sizes, link counts, owners, groups, authors, major device
365 numbers, minor device numbers, and file sizes, respectively. */
367 static int inode_number_width
;
368 static int block_size_width
;
369 static int nlink_width
;
370 static int scontext_width
;
371 static int owner_width
;
372 static int group_width
;
373 static int author_width
;
374 static int major_device_number_width
;
375 static int minor_device_number_width
;
376 static int file_size_width
;
380 /* long_format for lots of info, one per line.
381 one_per_line for just names, one per line.
382 many_per_line for just names, many per line, sorted vertically.
383 horizontal for just names, many per line, sorted horizontally.
384 with_commas for just names, many per line, separated by commas.
386 -l (and other options that imply -l), -1, -C, -x and -m control
391 long_format
, /* -l and other options that imply -l */
392 one_per_line
, /* -1 */
393 many_per_line
, /* -C */
398 static enum format format
;
400 /* `full-iso' uses full ISO-style dates and times. `long-iso' uses longer
401 ISO-style time stamps, though shorter than `full-iso'. `iso' uses shorter
402 ISO-style time stamps. `locale' uses locale-dependent time stamps. */
405 full_iso_time_style
, /* --time-style=full-iso */
406 long_iso_time_style
, /* --time-style=long-iso */
407 iso_time_style
, /* --time-style=iso */
408 locale_time_style
/* --time-style=locale */
411 static char const *const time_style_args
[] =
413 "full-iso", "long-iso", "iso", "locale", NULL
415 static enum time_style
const time_style_types
[] =
417 full_iso_time_style
, long_iso_time_style
, iso_time_style
,
420 ARGMATCH_VERIFY (time_style_args
, time_style_types
);
422 /* Type of time to print or sort by. Controlled by -c and -u.
423 The values of each item of this enum are important since they are
424 used as indices in the sort functions array (see sort_files()). */
428 time_mtime
, /* default */
431 time_numtypes
/* the number of elements of this enum */
434 static enum time_type time_type
;
436 /* The file characteristic to sort by. Controlled by -t, -S, -U, -X, -v.
437 The values of each item of this enum are important since they are
438 used as indices in the sort functions array (see sort_files()). */
442 sort_none
= -1, /* -U */
443 sort_name
, /* default */
444 sort_extension
, /* -X */
446 sort_version
, /* -v */
448 sort_numtypes
/* the number of elements of this enum */
451 static enum sort_type sort_type
;
453 /* Direction of sort.
454 false means highest first if numeric,
455 lowest first if alphabetic;
456 these are the defaults.
457 true means the opposite order in each case. -r */
459 static bool sort_reverse
;
461 /* True means to display owner information. -g turns this off. */
463 static bool print_owner
= true;
465 /* True means to display author information. */
467 static bool print_author
;
469 /* True means to display group information. -G and -o turn this off. */
471 static bool print_group
= true;
473 /* True means print the user and group id's as numbers rather
476 static bool numeric_ids
;
478 /* True means mention the size in blocks of each file. -s */
480 static bool print_block_size
;
482 /* Human-readable options for output. */
483 static int human_output_opts
;
485 /* The units to use when printing sizes other than file sizes. */
486 static uintmax_t output_block_size
;
488 /* Likewise, but for file sizes. */
489 static uintmax_t file_output_block_size
= 1;
491 /* Follow the output with a special string. Using this format,
492 Emacs' dired mode starts up twice as fast, and can handle all
493 strange characters in file names. */
496 /* `none' means don't mention the type of files.
497 `slash' means mention directories only, with a '/'.
498 `file_type' means mention file types.
499 `classify' means mention file types and mark executables.
501 Controlled by -F, -p, and --indicator-style. */
505 none
, /* --indicator-style=none */
506 slash
, /* -p, --indicator-style=slash */
507 file_type
, /* --indicator-style=file-type */
508 classify
/* -F, --indicator-style=classify */
511 static enum indicator_style indicator_style
;
513 /* Names of indicator styles. */
514 static char const *const indicator_style_args
[] =
516 "none", "slash", "file-type", "classify", NULL
518 static enum indicator_style
const indicator_style_types
[] =
520 none
, slash
, file_type
, classify
522 ARGMATCH_VERIFY (indicator_style_args
, indicator_style_types
);
524 /* True means use colors to mark types. Also define the different
525 colors as well as the stuff for the LS_COLORS environment variable.
526 The LS_COLORS variable is now in a termcap-like format. */
528 static bool print_with_color
;
530 /* Whether we used any colors in the output so far. If so, we will
531 need to restore the default color later. If not, we will need to
532 call prep_non_filename_text before using color for the first time. */
534 static bool used_color
= false;
538 color_never
, /* 0: default or --color=never */
539 color_always
, /* 1: --color=always */
540 color_if_tty
/* 2: --color=tty */
543 enum Dereference_symlink
547 DEREF_COMMAND_LINE_ARGUMENTS
, /* -H */
548 DEREF_COMMAND_LINE_SYMLINK_TO_DIR
, /* the default, in certain cases */
549 DEREF_ALWAYS
/* -L */
554 C_LEFT
, C_RIGHT
, C_END
, C_RESET
, C_NORM
, C_FILE
, C_DIR
, C_LINK
,
556 C_BLK
, C_CHR
, C_MISSING
, C_ORPHAN
, C_EXEC
, C_DOOR
, C_SETUID
, C_SETGID
,
557 C_STICKY
, C_OTHER_WRITABLE
, C_STICKY_OTHER_WRITABLE
, C_CAP
, C_MULTIHARDLINK
,
561 static const char *const indicator_name
[]=
563 "lc", "rc", "ec", "rs", "no", "fi", "di", "ln", "pi", "so",
564 "bd", "cd", "mi", "or", "ex", "do", "su", "sg", "st",
565 "ow", "tw", "ca", "mh", "cl", NULL
568 struct color_ext_type
570 struct bin_str ext
; /* The extension we're looking for */
571 struct bin_str seq
; /* The sequence to output when we do */
572 struct color_ext_type
*next
; /* Next in list */
575 static struct bin_str color_indicator
[] =
577 { LEN_STR_PAIR ("\033[") }, /* lc: Left of color sequence */
578 { LEN_STR_PAIR ("m") }, /* rc: Right of color sequence */
579 { 0, NULL
}, /* ec: End color (replaces lc+no+rc) */
580 { LEN_STR_PAIR ("0") }, /* rs: Reset to ordinary colors */
581 { 0, NULL
}, /* no: Normal */
582 { 0, NULL
}, /* fi: File: default */
583 { LEN_STR_PAIR ("01;34") }, /* di: Directory: bright blue */
584 { LEN_STR_PAIR ("01;36") }, /* ln: Symlink: bright cyan */
585 { LEN_STR_PAIR ("33") }, /* pi: Pipe: yellow/brown */
586 { LEN_STR_PAIR ("01;35") }, /* so: Socket: bright magenta */
587 { LEN_STR_PAIR ("01;33") }, /* bd: Block device: bright yellow */
588 { LEN_STR_PAIR ("01;33") }, /* cd: Char device: bright yellow */
589 { 0, NULL
}, /* mi: Missing file: undefined */
590 { 0, NULL
}, /* or: Orphaned symlink: undefined */
591 { LEN_STR_PAIR ("01;32") }, /* ex: Executable: bright green */
592 { LEN_STR_PAIR ("01;35") }, /* do: Door: bright magenta */
593 { LEN_STR_PAIR ("37;41") }, /* su: setuid: white on red */
594 { LEN_STR_PAIR ("30;43") }, /* sg: setgid: black on yellow */
595 { LEN_STR_PAIR ("37;44") }, /* st: sticky: black on blue */
596 { LEN_STR_PAIR ("34;42") }, /* ow: other-writable: blue on green */
597 { LEN_STR_PAIR ("30;42") }, /* tw: ow w/ sticky: black on green */
598 { LEN_STR_PAIR ("30;41") }, /* ca: black on red */
599 { 0, NULL
}, /* mh: disabled by default */
600 { LEN_STR_PAIR ("\033[K") }, /* cl: clear to end of line */
604 static struct color_ext_type
*color_ext_list
= NULL
;
606 /* Buffer for color sequences */
607 static char *color_buf
;
609 /* True means to check for orphaned symbolic link, for displaying
612 static bool check_symlink_color
;
614 /* True means mention the inode number of each file. -i */
616 static bool print_inode
;
618 /* What to do with symbolic links. Affected by -d, -F, -H, -l (and
619 other options that imply -l), and -L. */
621 static enum Dereference_symlink dereference
;
623 /* True means when a directory is found, display info on its
626 static bool recursive
;
628 /* True means when an argument is a directory name, display info
631 static bool immediate_dirs
;
633 /* True means that directories are grouped before files. */
635 static bool directories_first
;
637 /* Which files to ignore. */
641 /* Ignore files whose names start with `.', and files specified by
642 --hide and --ignore. */
645 /* Ignore `.', `..', and files specified by --ignore. */
646 IGNORE_DOT_AND_DOTDOT
,
648 /* Ignore only files specified by --ignore. */
652 /* A linked list of shell-style globbing patterns. If a non-argument
653 file name matches any of these patterns, it is ignored.
654 Controlled by -I. Multiple -I options accumulate.
655 The -B option adds `*~' and `.*~' to this list. */
657 struct ignore_pattern
660 struct ignore_pattern
*next
;
663 static struct ignore_pattern
*ignore_patterns
;
665 /* Similar to IGNORE_PATTERNS, except that -a or -A causes this
666 variable itself to be ignored. */
667 static struct ignore_pattern
*hide_patterns
;
669 /* True means output nongraphic chars in file names as `?'.
670 (-q, --hide-control-chars)
671 qmark_funny_chars and the quoting style (-Q, --quoting-style=WORD) are
672 independent. The algorithm is: first, obey the quoting style to get a
673 string representing the file name; then, if qmark_funny_chars is set,
674 replace all nonprintable chars in that string with `?'. It's necessary
675 to replace nonprintable chars even in quoted strings, because we don't
676 want to mess up the terminal if control chars get sent to it, and some
677 quoting methods pass through control chars as-is. */
678 static bool qmark_funny_chars
;
680 /* Quoting options for file and dir name output. */
682 static struct quoting_options
*filename_quoting_options
;
683 static struct quoting_options
*dirname_quoting_options
;
685 /* The number of chars per hardware tab stop. Setting this to zero
686 inhibits the use of TAB characters for separating columns. -T */
687 static size_t tabsize
;
689 /* True means print each directory name before listing it. */
691 static bool print_dir_name
;
693 /* The line length to use for breaking lines in many-per-line format.
694 Can be set with -w. */
696 static size_t line_length
;
698 /* If true, the file listing format requires that stat be called on
701 static bool format_needs_stat
;
703 /* Similar to `format_needs_stat', but set if only the file type is
706 static bool format_needs_type
;
708 /* An arbitrary limit on the number of bytes in a printed time stamp.
709 This is set to a relatively small value to avoid the need to worry
710 about denial-of-service attacks on servers that run "ls" on behalf
711 of remote clients. 1000 bytes should be enough for any practical
712 time stamp format. */
714 enum { TIME_STAMP_LEN_MAXIMUM
= MAX (1000, INT_STRLEN_BOUND (time_t)) };
716 /* strftime formats for non-recent and recent files, respectively, in
719 static char const *long_time_format
[2] =
721 /* strftime format for non-recent files (older than 6 months), in
722 -l output. This should contain the year, month and day (at
723 least), in an order that is understood by people in your
724 locale's territory. Please try to keep the number of used
725 screen columns small, because many people work in windows with
726 only 80 columns. But make this as wide as the other string
727 below, for recent files. */
728 /* TRANSLATORS: ls output needs to be aligned for ease of reading,
729 so be wary of using variable width fields from the locale.
730 Note %b is handled specially by ls and aligned correctly.
731 Note also that specifying a width as in %5b is erroneous as strftime
732 will count bytes rather than characters in multibyte locales. */
734 /* strftime format for recent files (younger than 6 months), in -l
735 output. This should contain the month, day and time (at
736 least), in an order that is understood by people in your
737 locale's territory. Please try to keep the number of used
738 screen columns small, because many people work in windows with
739 only 80 columns. But make this as wide as the other string
740 above, for non-recent files. */
741 /* TRANSLATORS: ls output needs to be aligned for ease of reading,
742 so be wary of using variable width fields from the locale.
743 Note %b is handled specially by ls and aligned correctly.
744 Note also that specifying a width as in %5b is erroneous as strftime
745 will count bytes rather than characters in multibyte locales. */
749 /* The set of signals that are caught. */
751 static sigset_t caught_signals
;
753 /* If nonzero, the value of the pending fatal signal. */
755 static sig_atomic_t volatile interrupt_signal
;
757 /* A count of the number of pending stop signals that have been received. */
759 static sig_atomic_t volatile stop_signal_count
;
761 /* Desired exit status. */
763 static int exit_status
;
768 /* "ls" had a minor problem. E.g., while processing a directory,
769 ls obtained the name of an entry via readdir, yet was later
770 unable to stat that name. This happens when listing a directory
771 in which entries are actively being removed or renamed. */
772 LS_MINOR_PROBLEM
= 1,
774 /* "ls" had more serious trouble (e.g., memory exhausted, invalid
775 option or failure to stat a command line argument. */
779 /* For long options that have no equivalent short option, use a
780 non-character as a pseudo short option, starting with CHAR_MAX + 1. */
783 AUTHOR_OPTION
= CHAR_MAX
+ 1,
786 DEREFERENCE_COMMAND_LINE_SYMLINK_TO_DIR_OPTION
,
787 FILE_TYPE_INDICATOR_OPTION
,
790 GROUP_DIRECTORIES_FIRST_OPTION
,
792 INDICATOR_STYLE_OPTION
,
793 QUOTING_STYLE_OPTION
,
794 SHOW_CONTROL_CHARS_OPTION
,
801 static struct option
const long_options
[] =
803 {"all", no_argument
, NULL
, 'a'},
804 {"escape", no_argument
, NULL
, 'b'},
805 {"directory", no_argument
, NULL
, 'd'},
806 {"dired", no_argument
, NULL
, 'D'},
807 {"full-time", no_argument
, NULL
, FULL_TIME_OPTION
},
808 {"group-directories-first", no_argument
, NULL
,
809 GROUP_DIRECTORIES_FIRST_OPTION
},
810 {"human-readable", no_argument
, NULL
, 'h'},
811 {"inode", no_argument
, NULL
, 'i'},
812 {"numeric-uid-gid", no_argument
, NULL
, 'n'},
813 {"no-group", no_argument
, NULL
, 'G'},
814 {"hide-control-chars", no_argument
, NULL
, 'q'},
815 {"reverse", no_argument
, NULL
, 'r'},
816 {"size", no_argument
, NULL
, 's'},
817 {"width", required_argument
, NULL
, 'w'},
818 {"almost-all", no_argument
, NULL
, 'A'},
819 {"ignore-backups", no_argument
, NULL
, 'B'},
820 {"classify", no_argument
, NULL
, 'F'},
821 {"file-type", no_argument
, NULL
, FILE_TYPE_INDICATOR_OPTION
},
822 {"si", no_argument
, NULL
, SI_OPTION
},
823 {"dereference-command-line", no_argument
, NULL
, 'H'},
824 {"dereference-command-line-symlink-to-dir", no_argument
, NULL
,
825 DEREFERENCE_COMMAND_LINE_SYMLINK_TO_DIR_OPTION
},
826 {"hide", required_argument
, NULL
, HIDE_OPTION
},
827 {"ignore", required_argument
, NULL
, 'I'},
828 {"indicator-style", required_argument
, NULL
, INDICATOR_STYLE_OPTION
},
829 {"dereference", no_argument
, NULL
, 'L'},
830 {"literal", no_argument
, NULL
, 'N'},
831 {"quote-name", no_argument
, NULL
, 'Q'},
832 {"quoting-style", required_argument
, NULL
, QUOTING_STYLE_OPTION
},
833 {"recursive", no_argument
, NULL
, 'R'},
834 {"format", required_argument
, NULL
, FORMAT_OPTION
},
835 {"show-control-chars", no_argument
, NULL
, SHOW_CONTROL_CHARS_OPTION
},
836 {"sort", required_argument
, NULL
, SORT_OPTION
},
837 {"tabsize", required_argument
, NULL
, 'T'},
838 {"time", required_argument
, NULL
, TIME_OPTION
},
839 {"time-style", required_argument
, NULL
, TIME_STYLE_OPTION
},
840 {"color", optional_argument
, NULL
, COLOR_OPTION
},
841 {"block-size", required_argument
, NULL
, BLOCK_SIZE_OPTION
},
842 {"context", no_argument
, 0, 'Z'},
843 {"author", no_argument
, NULL
, AUTHOR_OPTION
},
844 {GETOPT_HELP_OPTION_DECL
},
845 {GETOPT_VERSION_OPTION_DECL
},
849 static char const *const format_args
[] =
851 "verbose", "long", "commas", "horizontal", "across",
852 "vertical", "single-column", NULL
854 static enum format
const format_types
[] =
856 long_format
, long_format
, with_commas
, horizontal
, horizontal
,
857 many_per_line
, one_per_line
859 ARGMATCH_VERIFY (format_args
, format_types
);
861 static char const *const sort_args
[] =
863 "none", "time", "size", "extension", "version", NULL
865 static enum sort_type
const sort_types
[] =
867 sort_none
, sort_time
, sort_size
, sort_extension
, sort_version
869 ARGMATCH_VERIFY (sort_args
, sort_types
);
871 static char const *const time_args
[] =
873 "atime", "access", "use", "ctime", "status", NULL
875 static enum time_type
const time_types
[] =
877 time_atime
, time_atime
, time_atime
, time_ctime
, time_ctime
879 ARGMATCH_VERIFY (time_args
, time_types
);
881 static char const *const color_args
[] =
883 /* force and none are for compatibility with another color-ls version */
884 "always", "yes", "force",
885 "never", "no", "none",
886 "auto", "tty", "if-tty", NULL
888 static enum color_type
const color_types
[] =
890 color_always
, color_always
, color_always
,
891 color_never
, color_never
, color_never
,
892 color_if_tty
, color_if_tty
, color_if_tty
894 ARGMATCH_VERIFY (color_args
, color_types
);
896 /* Information about filling a column. */
904 /* Array with information about column filledness. */
905 static struct column_info
*column_info
;
907 /* Maximum number of columns ever possible for this display. */
908 static size_t max_idx
;
910 /* The minimum width of a column is 3: 1 character for the name and 2
911 for the separating white space. */
912 #define MIN_COLUMN_WIDTH 3
915 /* This zero-based index is used solely with the --dired option.
916 When that option is in effect, this counter is incremented for each
917 byte of output generated by this program so that the beginning
918 and ending indices (in that output) of every file name can be recorded
919 and later output themselves. */
920 static size_t dired_pos
;
922 #define DIRED_PUTCHAR(c) do {putchar ((c)); ++dired_pos;} while (0)
924 /* Write S to STREAM and increment DIRED_POS by S_LEN. */
925 #define DIRED_FPUTS(s, stream, s_len) \
926 do {fputs (s, stream); dired_pos += s_len;} while (0)
928 /* Like DIRED_FPUTS, but for use when S is a literal string. */
929 #define DIRED_FPUTS_LITERAL(s, stream) \
930 do {fputs (s, stream); dired_pos += sizeof (s) - 1;} while (0)
932 #define DIRED_INDENT() \
936 DIRED_FPUTS_LITERAL (" ", stdout); \
940 /* With --dired, store pairs of beginning and ending indices of filenames. */
941 static struct obstack dired_obstack
;
943 /* With --dired, store pairs of beginning and ending indices of any
944 directory names that appear as headers (just before `total' line)
945 for lists of directory entries. Such directory names are seen when
946 listing hierarchies using -R and when a directory is listed with at
947 least one other command line argument. */
948 static struct obstack subdired_obstack
;
950 /* Save the current index on the specified obstack, OBS. */
951 #define PUSH_CURRENT_DIRED_POS(obs) \
955 obstack_grow (obs, &dired_pos, sizeof (dired_pos)); \
959 /* With -R, this stack is used to help detect directory cycles.
960 The device/inode pairs on this stack mirror the pairs in the
961 active_dir_set hash table. */
962 static struct obstack dev_ino_obstack
;
964 /* Push a pair onto the device/inode stack. */
965 #define DEV_INO_PUSH(Dev, Ino) \
968 struct dev_ino *di; \
969 obstack_blank (&dev_ino_obstack, sizeof (struct dev_ino)); \
970 di = -1 + (struct dev_ino *) obstack_next_free (&dev_ino_obstack); \
971 di->st_dev = (Dev); \
972 di->st_ino = (Ino); \
976 /* Pop a dev/ino struct off the global dev_ino_obstack
977 and return that struct. */
978 static struct dev_ino
981 assert (sizeof (struct dev_ino
) <= obstack_object_size (&dev_ino_obstack
));
982 obstack_blank (&dev_ino_obstack
, -(int) (sizeof (struct dev_ino
)));
983 return *(struct dev_ino
*) obstack_next_free (&dev_ino_obstack
);
986 /* Note the use commented out below:
987 #define ASSERT_MATCHING_DEV_INO(Name, Di) \
992 assert (0 <= stat (Name, &sb)); \
993 assert (sb.st_dev == Di.st_dev); \
994 assert (sb.st_ino == Di.st_ino); \
999 /* Write to standard output PREFIX, followed by the quoting style and
1000 a space-separated list of the integers stored in OS all on one line. */
1003 dired_dump_obstack (const char *prefix
, struct obstack
*os
)
1007 n_pos
= obstack_object_size (os
) / sizeof (dired_pos
);
1013 pos
= (size_t *) obstack_finish (os
);
1014 fputs (prefix
, stdout
);
1015 for (i
= 0; i
< n_pos
; i
++)
1016 printf (" %lu", (unsigned long int) pos
[i
]);
1021 /* Read the abbreviated month names from the locale, to align them
1022 and to determine the max width of the field and to truncate names
1023 greater than our max allowed.
1024 Note even though this handles multibyte locales correctly
1025 it's not restricted to them as single byte locales can have
1026 variable width abbreviated months and also precomputing/caching
1027 the names was seen to increase the performance of ls significantly. */
1029 /* max number of display cells to use */
1030 enum { MAX_MON_WIDTH
= 5 };
1031 /* In the unlikely event that the abmon[] storage is not big enough
1032 an error message will be displayed, and we revert to using
1033 unmodified abbreviated month names from the locale database. */
1034 static char abmon
[12][MAX_MON_WIDTH
* 2 * MB_LEN_MAX
+ 1];
1035 /* minimum width needed to align %b, 0 => don't use precomputed values. */
1036 static size_t required_mon_width
;
1041 #ifdef HAVE_NL_LANGINFO
1042 required_mon_width
= MAX_MON_WIDTH
;
1043 size_t curr_max_width
;
1046 curr_max_width
= required_mon_width
;
1047 required_mon_width
= 0;
1048 for (int i
= 0; i
< 12; i
++)
1050 size_t width
= curr_max_width
;
1052 size_t req
= mbsalign (nl_langinfo (ABMON_1
+ i
),
1053 abmon
[i
], sizeof (abmon
[i
]),
1054 &width
, MBS_ALIGN_LEFT
, 0);
1056 if (req
== (size_t) -1 || req
>= sizeof (abmon
[i
]))
1058 required_mon_width
= 0; /* ignore precomputed strings. */
1059 return required_mon_width
;
1062 required_mon_width
= MAX (required_mon_width
, width
);
1065 while (curr_max_width
> required_mon_width
);
1068 return required_mon_width
;
1072 dev_ino_hash (void const *x
, size_t table_size
)
1074 struct dev_ino
const *p
= x
;
1075 return (uintmax_t) p
->st_ino
% table_size
;
1079 dev_ino_compare (void const *x
, void const *y
)
1081 struct dev_ino
const *a
= x
;
1082 struct dev_ino
const *b
= y
;
1083 return SAME_INODE (*a
, *b
) ? true : false;
1087 dev_ino_free (void *x
)
1092 /* Add the device/inode pair (P->st_dev/P->st_ino) to the set of
1093 active directories. Return true if there is already a matching
1094 entry in the table. */
1097 visit_dir (dev_t dev
, ino_t ino
)
1099 struct dev_ino
*ent
;
1100 struct dev_ino
*ent_from_table
;
1103 ent
= xmalloc (sizeof *ent
);
1107 /* Attempt to insert this entry into the table. */
1108 ent_from_table
= hash_insert (active_dir_set
, ent
);
1110 if (ent_from_table
== NULL
)
1112 /* Insertion failed due to lack of memory. */
1116 found_match
= (ent_from_table
!= ent
);
1120 /* ent was not inserted, so free it. */
1128 free_pending_ent (struct pending
*p
)
1136 is_colored (enum indicator_no type
)
1138 size_t len
= color_indicator
[type
].len
;
1139 char const *s
= color_indicator
[type
].string
;
1141 || (len
== 1 && strncmp (s
, "0", 1) == 0)
1142 || (len
== 2 && strncmp (s
, "00", 2) == 0));
1146 restore_default_color (void)
1148 put_indicator (&color_indicator
[C_LEFT
]);
1149 put_indicator (&color_indicator
[C_RIGHT
]);
1153 set_normal_color (void)
1155 if (print_with_color
&& is_colored (C_NORM
))
1157 put_indicator (&color_indicator
[C_LEFT
]);
1158 put_indicator (&color_indicator
[C_NORM
]);
1159 put_indicator (&color_indicator
[C_RIGHT
]);
1163 /* An ordinary signal was received; arrange for the program to exit. */
1166 sighandler (int sig
)
1169 signal (sig
, SIG_IGN
);
1170 if (! interrupt_signal
)
1171 interrupt_signal
= sig
;
1174 /* A SIGTSTP was received; arrange for the program to suspend itself. */
1177 stophandler (int sig
)
1180 signal (sig
, stophandler
);
1181 if (! interrupt_signal
)
1182 stop_signal_count
++;
1185 /* Process any pending signals. If signals are caught, this function
1186 should be called periodically. Ideally there should never be an
1187 unbounded amount of time when signals are not being processed.
1188 Signal handling can restore the default colors, so callers must
1189 immediately change colors after invoking this function. */
1192 process_signals (void)
1194 while (interrupt_signal
|| stop_signal_count
)
1201 restore_default_color ();
1204 sigprocmask (SIG_BLOCK
, &caught_signals
, &oldset
);
1206 /* Reload interrupt_signal and stop_signal_count, in case a new
1207 signal was handled before sigprocmask took effect. */
1208 sig
= interrupt_signal
;
1209 stops
= stop_signal_count
;
1211 /* SIGTSTP is special, since the application can receive that signal
1212 more than once. In this case, don't set the signal handler to the
1213 default. Instead, just raise the uncatchable SIGSTOP. */
1216 stop_signal_count
= stops
- 1;
1220 signal (sig
, SIG_DFL
);
1222 /* Exit or suspend the program. */
1224 sigprocmask (SIG_SETMASK
, &oldset
, NULL
);
1226 /* If execution reaches here, then the program has been
1227 continued (after being suspended). */
1232 main (int argc
, char **argv
)
1235 struct pending
*thispend
;
1238 /* The signals that are trapped, and the number of such signals. */
1239 static int const sig
[] =
1241 /* This one is handled specially. */
1244 /* The usual suspects. */
1245 SIGALRM
, SIGHUP
, SIGINT
, SIGPIPE
, SIGQUIT
, SIGTERM
,
1262 enum { nsigs
= ARRAY_CARDINALITY (sig
) };
1265 bool caught_sig
[nsigs
];
1268 initialize_main (&argc
, &argv
);
1269 set_program_name (argv
[0]);
1270 setlocale (LC_ALL
, "");
1271 bindtextdomain (PACKAGE
, LOCALEDIR
);
1272 textdomain (PACKAGE
);
1274 initialize_exit_failure (LS_FAILURE
);
1275 atexit (close_stdout
);
1277 assert (ARRAY_CARDINALITY (color_indicator
) + 1
1278 == ARRAY_CARDINALITY (indicator_name
));
1280 exit_status
= EXIT_SUCCESS
;
1281 print_dir_name
= true;
1282 pending_dirs
= NULL
;
1284 current_time
.tv_sec
= TYPE_MINIMUM (time_t);
1285 current_time
.tv_nsec
= -1;
1287 i
= decode_switches (argc
, argv
);
1289 if (print_with_color
)
1292 /* Test print_with_color again, because the call to parse_ls_color
1293 may have just reset it -- e.g., if LS_COLORS is invalid. */
1294 if (print_with_color
)
1296 /* Avoid following symbolic links when possible. */
1297 if (is_colored (C_ORPHAN
)
1298 || (is_colored (C_EXEC
) && color_symlink_as_referent
)
1299 || (is_colored (C_MISSING
) && format
== long_format
))
1300 check_symlink_color
= true;
1302 /* If the standard output is a controlling terminal, watch out
1303 for signals, so that the colors can be restored to the
1304 default state if "ls" is suspended or interrupted. */
1306 if (0 <= tcgetpgrp (STDOUT_FILENO
))
1310 struct sigaction act
;
1312 sigemptyset (&caught_signals
);
1313 for (j
= 0; j
< nsigs
; j
++)
1315 sigaction (sig
[j
], NULL
, &act
);
1316 if (act
.sa_handler
!= SIG_IGN
)
1317 sigaddset (&caught_signals
, sig
[j
]);
1320 act
.sa_mask
= caught_signals
;
1321 act
.sa_flags
= SA_RESTART
;
1323 for (j
= 0; j
< nsigs
; j
++)
1324 if (sigismember (&caught_signals
, sig
[j
]))
1326 act
.sa_handler
= sig
[j
] == SIGTSTP
? stophandler
: sighandler
;
1327 sigaction (sig
[j
], &act
, NULL
);
1330 for (j
= 0; j
< nsigs
; j
++)
1332 caught_sig
[j
] = (signal (sig
[j
], SIG_IGN
) != SIG_IGN
);
1335 signal (sig
[j
], sig
[j
] == SIGTSTP
? stophandler
: sighandler
);
1336 siginterrupt (sig
[j
], 0);
1343 if (dereference
== DEREF_UNDEFINED
)
1344 dereference
= ((immediate_dirs
1345 || indicator_style
== classify
1346 || format
== long_format
)
1348 : DEREF_COMMAND_LINE_SYMLINK_TO_DIR
);
1350 /* When using -R, initialize a data structure we'll use to
1351 detect any directory cycles. */
1354 active_dir_set
= hash_initialize (INITIAL_TABLE_SIZE
, NULL
,
1358 if (active_dir_set
== NULL
)
1361 obstack_init (&dev_ino_obstack
);
1364 format_needs_stat
= sort_type
== sort_time
|| sort_type
== sort_size
1365 || format
== long_format
1367 || print_block_size
;
1368 format_needs_type
= (! format_needs_stat
1371 || indicator_style
!= none
1372 || directories_first
));
1376 obstack_init (&dired_obstack
);
1377 obstack_init (&subdired_obstack
);
1381 cwd_file
= xnmalloc (cwd_n_alloc
, sizeof *cwd_file
);
1391 gobble_file (".", directory
, NOT_AN_INODE_NUMBER
, true, "");
1393 queue_directory (".", NULL
, true);
1397 gobble_file (argv
[i
++], unknown
, NOT_AN_INODE_NUMBER
, true, "");
1403 if (!immediate_dirs
)
1404 extract_dirs_from_files (NULL
, true);
1405 /* `cwd_n_used' might be zero now. */
1408 /* In the following if/else blocks, it is sufficient to test `pending_dirs'
1409 (and not pending_dirs->name) because there may be no markers in the queue
1410 at this point. A marker may be enqueued when extract_dirs_from_files is
1411 called with a non-empty string or via print_dir. */
1414 print_current_files ();
1416 DIRED_PUTCHAR ('\n');
1418 else if (n_files
<= 1 && pending_dirs
&& pending_dirs
->next
== 0)
1419 print_dir_name
= false;
1421 while (pending_dirs
)
1423 thispend
= pending_dirs
;
1424 pending_dirs
= pending_dirs
->next
;
1428 if (thispend
->name
== NULL
)
1430 /* thispend->name == NULL means this is a marker entry
1431 indicating we've finished processing the directory.
1432 Use its dev/ino numbers to remove the corresponding
1433 entry from the active_dir_set hash table. */
1434 struct dev_ino di
= dev_ino_pop ();
1435 struct dev_ino
*found
= hash_delete (active_dir_set
, &di
);
1436 /* ASSERT_MATCHING_DEV_INO (thispend->realname, di); */
1438 dev_ino_free (found
);
1439 free_pending_ent (thispend
);
1444 print_dir (thispend
->name
, thispend
->realname
,
1445 thispend
->command_line_arg
);
1447 free_pending_ent (thispend
);
1448 print_dir_name
= true;
1451 if (print_with_color
)
1457 /* Skip the restore when it would be a no-op, i.e.,
1458 when left is "\033[" and right is "m". */
1459 if (!(color_indicator
[C_LEFT
].len
== 2
1460 && memcmp (color_indicator
[C_LEFT
].string
, "\033[", 2) == 0
1461 && color_indicator
[C_RIGHT
].len
== 1
1462 && color_indicator
[C_RIGHT
].string
[0] == 'm'))
1463 restore_default_color ();
1467 /* Restore the default signal handling. */
1469 for (j
= 0; j
< nsigs
; j
++)
1470 if (sigismember (&caught_signals
, sig
[j
]))
1471 signal (sig
[j
], SIG_DFL
);
1473 for (j
= 0; j
< nsigs
; j
++)
1475 signal (sig
[j
], SIG_DFL
);
1478 /* Act on any signals that arrived before the default was restored.
1479 This can process signals out of order, but there doesn't seem to
1480 be an easy way to do them in order, and the order isn't that
1481 important anyway. */
1482 for (j
= stop_signal_count
; j
; j
--)
1484 j
= interrupt_signal
;
1491 /* No need to free these since we're about to exit. */
1492 dired_dump_obstack ("//DIRED//", &dired_obstack
);
1493 dired_dump_obstack ("//SUBDIRED//", &subdired_obstack
);
1494 printf ("//DIRED-OPTIONS// --quoting-style=%s\n",
1495 quoting_style_args
[get_quoting_style (filename_quoting_options
)]);
1500 assert (hash_get_n_entries (active_dir_set
) == 0);
1501 hash_free (active_dir_set
);
1507 /* Set all the option flags according to the switches specified.
1508 Return the index of the first non-option argument. */
1511 decode_switches (int argc
, char **argv
)
1513 char *time_style_option
= NULL
;
1515 /* Record whether there is an option specifying sort type. */
1516 bool sort_type_specified
= false;
1518 qmark_funny_chars
= false;
1520 /* initialize all switches to default settings */
1525 /* This is for the `dir' program. */
1526 format
= many_per_line
;
1527 set_quoting_style (NULL
, escape_quoting_style
);
1530 case LS_LONG_FORMAT
:
1531 /* This is for the `vdir' program. */
1532 format
= long_format
;
1533 set_quoting_style (NULL
, escape_quoting_style
);
1537 /* This is for the `ls' program. */
1538 if (isatty (STDOUT_FILENO
))
1540 format
= many_per_line
;
1541 /* See description of qmark_funny_chars, above. */
1542 qmark_funny_chars
= true;
1546 format
= one_per_line
;
1547 qmark_funny_chars
= false;
1555 time_type
= time_mtime
;
1556 sort_type
= sort_name
;
1557 sort_reverse
= false;
1558 numeric_ids
= false;
1559 print_block_size
= false;
1560 indicator_style
= none
;
1561 print_inode
= false;
1562 dereference
= DEREF_UNDEFINED
;
1564 immediate_dirs
= false;
1565 ignore_mode
= IGNORE_DEFAULT
;
1566 ignore_patterns
= NULL
;
1567 hide_patterns
= NULL
;
1568 print_scontext
= false;
1570 /* FIXME: put this in a function. */
1572 char const *q_style
= getenv ("QUOTING_STYLE");
1575 int i
= ARGMATCH (q_style
, quoting_style_args
, quoting_style_vals
);
1577 set_quoting_style (NULL
, quoting_style_vals
[i
]);
1580 _("ignoring invalid value of environment variable QUOTING_STYLE: %s"),
1581 quotearg (q_style
));
1586 char const *ls_block_size
= getenv ("LS_BLOCK_SIZE");
1587 human_options (ls_block_size
,
1588 &human_output_opts
, &output_block_size
);
1589 if (ls_block_size
|| getenv ("BLOCK_SIZE"))
1590 file_output_block_size
= output_block_size
;
1595 char const *p
= getenv ("COLUMNS");
1598 unsigned long int tmp_ulong
;
1599 if (xstrtoul (p
, NULL
, 0, &tmp_ulong
, NULL
) == LONGINT_OK
1600 && 0 < tmp_ulong
&& tmp_ulong
<= SIZE_MAX
)
1602 line_length
= tmp_ulong
;
1607 _("ignoring invalid width in environment variable COLUMNS: %s"),
1617 if (ioctl (STDOUT_FILENO
, TIOCGWINSZ
, &ws
) != -1
1618 && 0 < ws
.ws_col
&& ws
.ws_col
== (size_t) ws
.ws_col
)
1619 line_length
= ws
.ws_col
;
1624 char const *p
= getenv ("TABSIZE");
1628 unsigned long int tmp_ulong
;
1629 if (xstrtoul (p
, NULL
, 0, &tmp_ulong
, NULL
) == LONGINT_OK
1630 && tmp_ulong
<= SIZE_MAX
)
1632 tabsize
= tmp_ulong
;
1637 _("ignoring invalid tab size in environment variable TABSIZE: %s"),
1646 int c
= getopt_long (argc
, argv
,
1647 "abcdfghiklmnopqrstuvw:xABCDFGHI:LNQRST:UXZ1",
1655 ignore_mode
= IGNORE_MINIMAL
;
1659 set_quoting_style (NULL
, escape_quoting_style
);
1663 time_type
= time_ctime
;
1667 immediate_dirs
= true;
1671 /* Same as enabling -a -U and disabling -l -s. */
1672 ignore_mode
= IGNORE_MINIMAL
;
1673 sort_type
= sort_none
;
1674 sort_type_specified
= true;
1676 if (format
== long_format
)
1677 format
= (isatty (STDOUT_FILENO
) ? many_per_line
: one_per_line
);
1678 print_block_size
= false; /* disable -s */
1679 print_with_color
= false; /* disable --color */
1682 case FILE_TYPE_INDICATOR_OPTION
: /* --file-type */
1683 indicator_style
= file_type
;
1687 format
= long_format
;
1688 print_owner
= false;
1692 human_output_opts
= human_autoscale
| human_SI
| human_base_1024
;
1693 file_output_block_size
= output_block_size
= 1;
1701 human_output_opts
= 0;
1702 file_output_block_size
= output_block_size
= 1024;
1706 format
= long_format
;
1710 format
= with_commas
;
1715 format
= long_format
;
1718 case 'o': /* Just like -l, but don't display group info. */
1719 format
= long_format
;
1720 print_group
= false;
1724 indicator_style
= slash
;
1728 qmark_funny_chars
= true;
1732 sort_reverse
= true;
1736 print_block_size
= true;
1740 sort_type
= sort_time
;
1741 sort_type_specified
= true;
1745 time_type
= time_atime
;
1749 sort_type
= sort_version
;
1750 sort_type_specified
= true;
1755 unsigned long int tmp_ulong
;
1756 if (xstrtoul (optarg
, NULL
, 0, &tmp_ulong
, NULL
) != LONGINT_OK
1757 || ! (0 < tmp_ulong
&& tmp_ulong
<= SIZE_MAX
))
1758 error (LS_FAILURE
, 0, _("invalid line width: %s"),
1760 line_length
= tmp_ulong
;
1765 format
= horizontal
;
1769 if (ignore_mode
== IGNORE_DEFAULT
)
1770 ignore_mode
= IGNORE_DOT_AND_DOTDOT
;
1774 add_ignore_pattern ("*~");
1775 add_ignore_pattern (".*~");
1779 format
= many_per_line
;
1787 indicator_style
= classify
;
1790 case 'G': /* inhibit display of group info */
1791 print_group
= false;
1795 dereference
= DEREF_COMMAND_LINE_ARGUMENTS
;
1798 case DEREFERENCE_COMMAND_LINE_SYMLINK_TO_DIR_OPTION
:
1799 dereference
= DEREF_COMMAND_LINE_SYMLINK_TO_DIR
;
1803 add_ignore_pattern (optarg
);
1807 dereference
= DEREF_ALWAYS
;
1811 set_quoting_style (NULL
, literal_quoting_style
);
1815 set_quoting_style (NULL
, c_quoting_style
);
1823 sort_type
= sort_size
;
1824 sort_type_specified
= true;
1829 unsigned long int tmp_ulong
;
1830 if (xstrtoul (optarg
, NULL
, 0, &tmp_ulong
, NULL
) != LONGINT_OK
1831 || SIZE_MAX
< tmp_ulong
)
1832 error (LS_FAILURE
, 0, _("invalid tab size: %s"),
1834 tabsize
= tmp_ulong
;
1839 sort_type
= sort_none
;
1840 sort_type_specified
= true;
1844 sort_type
= sort_extension
;
1845 sort_type_specified
= true;
1849 /* -1 has no effect after -l. */
1850 if (format
!= long_format
)
1851 format
= one_per_line
;
1855 print_author
= true;
1860 struct ignore_pattern
*hide
= xmalloc (sizeof *hide
);
1861 hide
->pattern
= optarg
;
1862 hide
->next
= hide_patterns
;
1863 hide_patterns
= hide
;
1868 sort_type
= XARGMATCH ("--sort", optarg
, sort_args
, sort_types
);
1869 sort_type_specified
= true;
1872 case GROUP_DIRECTORIES_FIRST_OPTION
:
1873 directories_first
= true;
1877 time_type
= XARGMATCH ("--time", optarg
, time_args
, time_types
);
1881 format
= XARGMATCH ("--format", optarg
, format_args
, format_types
);
1884 case FULL_TIME_OPTION
:
1885 format
= long_format
;
1886 time_style_option
= bad_cast ("full-iso");
1893 i
= XARGMATCH ("--color", optarg
, color_args
, color_types
);
1895 /* Using --color with no argument is equivalent to using
1899 print_with_color
= (i
== color_always
1900 || (i
== color_if_tty
1901 && isatty (STDOUT_FILENO
)));
1903 if (print_with_color
)
1905 /* Don't use TAB characters in output. Some terminal
1906 emulators can't handle the combination of tabs and
1907 color codes on the same line. */
1913 case INDICATOR_STYLE_OPTION
:
1914 indicator_style
= XARGMATCH ("--indicator-style", optarg
,
1915 indicator_style_args
,
1916 indicator_style_types
);
1919 case QUOTING_STYLE_OPTION
:
1920 set_quoting_style (NULL
,
1921 XARGMATCH ("--quoting-style", optarg
,
1923 quoting_style_vals
));
1926 case TIME_STYLE_OPTION
:
1927 time_style_option
= optarg
;
1930 case SHOW_CONTROL_CHARS_OPTION
:
1931 qmark_funny_chars
= false;
1934 case BLOCK_SIZE_OPTION
:
1936 enum strtol_error e
= human_options (optarg
, &human_output_opts
,
1937 &output_block_size
);
1938 if (e
!= LONGINT_OK
)
1939 xstrtol_fatal (e
, oi
, 0, long_options
, optarg
);
1940 file_output_block_size
= output_block_size
;
1945 human_output_opts
= human_autoscale
| human_SI
;
1946 file_output_block_size
= output_block_size
= 1;
1950 print_scontext
= true;
1953 case_GETOPT_HELP_CHAR
;
1955 case_GETOPT_VERSION_CHAR (PROGRAM_NAME
, AUTHORS
);
1962 max_idx
= MAX (1, line_length
/ MIN_COLUMN_WIDTH
);
1964 filename_quoting_options
= clone_quoting_options (NULL
);
1965 if (get_quoting_style (filename_quoting_options
) == escape_quoting_style
)
1966 set_char_quoting (filename_quoting_options
, ' ', 1);
1967 if (file_type
<= indicator_style
)
1970 for (p
= "*=>@|" + indicator_style
- file_type
; *p
; p
++)
1971 set_char_quoting (filename_quoting_options
, *p
, 1);
1974 dirname_quoting_options
= clone_quoting_options (NULL
);
1975 set_char_quoting (dirname_quoting_options
, ':', 1);
1977 /* --dired is meaningful only with --format=long (-l).
1978 Otherwise, ignore it. FIXME: warn about this?
1979 Alternatively, make --dired imply --format=long? */
1980 if (dired
&& format
!= long_format
)
1983 /* If -c or -u is specified and not -l (or any other option that implies -l),
1984 and no sort-type was specified, then sort by the ctime (-c) or atime (-u).
1985 The behavior of ls when using either -c or -u but with neither -l nor -t
1986 appears to be unspecified by POSIX. So, with GNU ls, `-u' alone means
1987 sort by atime (this is the one that's not specified by the POSIX spec),
1988 -lu means show atime and sort by name, -lut means show atime and sort
1991 if ((time_type
== time_ctime
|| time_type
== time_atime
)
1992 && !sort_type_specified
&& format
!= long_format
)
1994 sort_type
= sort_time
;
1997 if (format
== long_format
)
1999 char *style
= time_style_option
;
2000 static char const posix_prefix
[] = "posix-";
2003 if (! (style
= getenv ("TIME_STYLE")))
2004 style
= bad_cast ("locale");
2006 while (strncmp (style
, posix_prefix
, sizeof posix_prefix
- 1) == 0)
2008 if (! hard_locale (LC_TIME
))
2010 style
+= sizeof posix_prefix
- 1;
2015 char *p0
= style
+ 1;
2016 char *p1
= strchr (p0
, '\n');
2021 if (strchr (p1
+ 1, '\n'))
2022 error (LS_FAILURE
, 0, _("invalid time style format %s"),
2026 long_time_format
[0] = p0
;
2027 long_time_format
[1] = p1
;
2030 switch (XARGMATCH ("time style", style
,
2034 case full_iso_time_style
:
2035 long_time_format
[0] = long_time_format
[1] =
2036 "%Y-%m-%d %H:%M:%S.%N %z";
2039 case long_iso_time_style
:
2040 case_long_iso_time_style
:
2041 long_time_format
[0] = long_time_format
[1] = "%Y-%m-%d %H:%M";
2044 case iso_time_style
:
2045 long_time_format
[0] = "%Y-%m-%d ";
2046 long_time_format
[1] = "%m-%d %H:%M";
2049 case locale_time_style
:
2050 if (hard_locale (LC_TIME
))
2052 /* Ensure that the locale has translations for both
2053 formats. If not, fall back on long-iso format. */
2055 for (i
= 0; i
< 2; i
++)
2057 char const *locale_format
=
2058 dcgettext (NULL
, long_time_format
[i
], LC_TIME
);
2059 if (locale_format
== long_time_format
[i
])
2060 goto case_long_iso_time_style
;
2061 long_time_format
[i
] = locale_format
;
2065 /* Note we leave %5b etc. alone so user widths/flags are honored. */
2066 if (strstr (long_time_format
[0],"%b") || strstr (long_time_format
[1],"%b"))
2068 error (0, 0, _("error initializing month strings"));
2074 /* Parse a string as part of the LS_COLORS variable; this may involve
2075 decoding all kinds of escape characters. If equals_end is set an
2076 unescaped equal sign ends the string, otherwise only a : or \0
2077 does. Set *OUTPUT_COUNT to the number of bytes output. Return
2080 The resulting string is *not* null-terminated, but may contain
2083 Note that both dest and src are char **; on return they point to
2084 the first free byte after the array and the character that ended
2085 the input string, respectively. */
2088 get_funky_string (char **dest
, const char **src
, bool equals_end
,
2089 size_t *output_count
)
2091 char num
; /* For numerical codes */
2092 size_t count
; /* Something to count with */
2094 ST_GND
, ST_BACKSLASH
, ST_OCTAL
, ST_HEX
, ST_CARET
, ST_END
, ST_ERROR
2099 p
= *src
; /* We don't want to double-indirect */
2100 q
= *dest
; /* the whole darn time. */
2102 count
= 0; /* No characters counted in yet. */
2105 state
= ST_GND
; /* Start in ground state. */
2106 while (state
< ST_END
)
2110 case ST_GND
: /* Ground state (no escapes) */
2115 state
= ST_END
; /* End of string */
2118 state
= ST_BACKSLASH
; /* Backslash scape sequence */
2122 state
= ST_CARET
; /* Caret escape */
2128 state
= ST_END
; /* End */
2131 /* else fall through */
2139 case ST_BACKSLASH
: /* Backslash escaped character */
2150 state
= ST_OCTAL
; /* Octal sequence */
2155 state
= ST_HEX
; /* Hex sequence */
2158 case 'a': /* Bell */
2161 case 'b': /* Backspace */
2164 case 'e': /* Escape */
2167 case 'f': /* Form feed */
2170 case 'n': /* Newline */
2173 case 'r': /* Carriage return */
2179 case 'v': /* Vtab */
2182 case '?': /* Delete */
2185 case '_': /* Space */
2188 case '\0': /* End of string */
2189 state
= ST_ERROR
; /* Error! */
2191 default: /* Escaped character like \ ^ : = */
2195 if (state
== ST_BACKSLASH
)
2204 case ST_OCTAL
: /* Octal sequence */
2205 if (*p
< '0' || *p
> '7')
2212 num
= (num
<< 3) + (*(p
++) - '0');
2215 case ST_HEX
: /* Hex sequence */
2228 num
= (num
<< 4) + (*(p
++) - '0');
2236 num
= (num
<< 4) + (*(p
++) - 'a') + 10;
2244 num
= (num
<< 4) + (*(p
++) - 'A') + 10;
2254 case ST_CARET
: /* Caret escape */
2255 state
= ST_GND
; /* Should be the next state... */
2256 if (*p
>= '@' && *p
<= '~')
2258 *(q
++) = *(p
++) & 037;
2277 *output_count
= count
;
2279 return state
!= ST_ERROR
;
2283 parse_ls_color (void)
2285 const char *p
; /* Pointer to character being parsed */
2286 char *buf
; /* color_buf buffer pointer */
2287 int state
; /* State of parser */
2288 int ind_no
; /* Indicator number */
2289 char label
[3]; /* Indicator label */
2290 struct color_ext_type
*ext
; /* Extension we are working on */
2292 if ((p
= getenv ("LS_COLORS")) == NULL
|| *p
== '\0')
2296 strcpy (label
, "??");
2298 /* This is an overly conservative estimate, but any possible
2299 LS_COLORS string will *not* generate a color_buf longer than
2300 itself, so it is a safe way of allocating a buffer in
2302 buf
= color_buf
= xstrdup (p
);
2309 case 1: /* First label character */
2317 /* Allocate new extension block and add to head of
2318 linked list (this way a later definition will
2319 override an earlier one, which can be useful for
2320 having terminal-specific defs override global). */
2322 ext
= xmalloc (sizeof *ext
);
2323 ext
->next
= color_ext_list
;
2324 color_ext_list
= ext
;
2327 ext
->ext
.string
= buf
;
2329 state
= (get_funky_string (&buf
, &p
, true, &ext
->ext
.len
)
2334 state
= 0; /* Done! */
2337 default: /* Assume it is file type label */
2344 case 2: /* Second label character */
2351 state
= -1; /* Error */
2354 case 3: /* Equal sign after indicator label */
2355 state
= -1; /* Assume failure... */
2356 if (*(p
++) == '=')/* It *should* be... */
2358 for (ind_no
= 0; indicator_name
[ind_no
] != NULL
; ++ind_no
)
2360 if (STREQ (label
, indicator_name
[ind_no
]))
2362 color_indicator
[ind_no
].string
= buf
;
2363 state
= (get_funky_string (&buf
, &p
, false,
2364 &color_indicator
[ind_no
].len
)
2370 error (0, 0, _("unrecognized prefix: %s"), quotearg (label
));
2374 case 4: /* Equal sign after *.ext */
2377 ext
->seq
.string
= buf
;
2378 state
= (get_funky_string (&buf
, &p
, false, &ext
->seq
.len
)
2389 struct color_ext_type
*e
;
2390 struct color_ext_type
*e2
;
2393 _("unparsable value for LS_COLORS environment variable"));
2395 for (e
= color_ext_list
; e
!= NULL
; /* empty */)
2401 print_with_color
= false;
2404 if (color_indicator
[C_LINK
].len
== 6
2405 && !strncmp (color_indicator
[C_LINK
].string
, "target", 6))
2406 color_symlink_as_referent
= true;
2409 /* Set the exit status to report a failure. If SERIOUS, it is a
2410 serious failure; otherwise, it is merely a minor problem. */
2413 set_exit_status (bool serious
)
2416 exit_status
= LS_FAILURE
;
2417 else if (exit_status
== EXIT_SUCCESS
)
2418 exit_status
= LS_MINOR_PROBLEM
;
2421 /* Assuming a failure is serious if SERIOUS, use the printf-style
2422 MESSAGE to report the failure to access a file named FILE. Assume
2423 errno is set appropriately for the failure. */
2426 file_failure (bool serious
, char const *message
, char const *file
)
2428 error (0, errno
, message
, quotearg_colon (file
));
2429 set_exit_status (serious
);
2432 /* Request that the directory named NAME have its contents listed later.
2433 If REALNAME is nonzero, it will be used instead of NAME when the
2434 directory name is printed. This allows symbolic links to directories
2435 to be treated as regular directories but still be listed under their
2436 real names. NAME == NULL is used to insert a marker entry for the
2437 directory named in REALNAME.
2438 If NAME is non-NULL, we use its dev/ino information to save
2439 a call to stat -- when doing a recursive (-R) traversal.
2440 COMMAND_LINE_ARG means this directory was mentioned on the command line. */
2443 queue_directory (char const *name
, char const *realname
, bool command_line_arg
)
2445 struct pending
*new = xmalloc (sizeof *new);
2446 new->realname
= realname
? xstrdup (realname
) : NULL
;
2447 new->name
= name
? xstrdup (name
) : NULL
;
2448 new->command_line_arg
= command_line_arg
;
2449 new->next
= pending_dirs
;
2453 /* Read directory NAME, and list the files in it.
2454 If REALNAME is nonzero, print its name instead of NAME;
2455 this is used for symbolic links to directories.
2456 COMMAND_LINE_ARG means this directory was mentioned on the command line. */
2459 print_dir (char const *name
, char const *realname
, bool command_line_arg
)
2462 struct dirent
*next
;
2463 uintmax_t total_blocks
= 0;
2464 static bool first
= true;
2467 dirp
= opendir (name
);
2470 file_failure (command_line_arg
, _("cannot open directory %s"), name
);
2476 struct stat dir_stat
;
2477 int fd
= dirfd (dirp
);
2479 /* If dirfd failed, endure the overhead of using stat. */
2481 ? fstat (fd
, &dir_stat
)
2482 : stat (name
, &dir_stat
)) < 0)
2484 file_failure (command_line_arg
,
2485 _("cannot determine device and inode of %s"), name
);
2490 /* If we've already visited this dev/inode pair, warn that
2491 we've found a loop, and do not process this directory. */
2492 if (visit_dir (dir_stat
.st_dev
, dir_stat
.st_ino
))
2494 error (0, 0, _("%s: not listing already-listed directory"),
2495 quotearg_colon (name
));
2497 set_exit_status (true);
2501 DEV_INO_PUSH (dir_stat
.st_dev
, dir_stat
.st_ino
);
2504 if (recursive
|| print_dir_name
)
2507 DIRED_PUTCHAR ('\n');
2510 PUSH_CURRENT_DIRED_POS (&subdired_obstack
);
2511 dired_pos
+= quote_name (stdout
, realname
? realname
: name
,
2512 dirname_quoting_options
, NULL
);
2513 PUSH_CURRENT_DIRED_POS (&subdired_obstack
);
2514 DIRED_FPUTS_LITERAL (":\n", stdout
);
2517 /* Read the directory entries, and insert the subfiles into the `cwd_file'
2524 /* Set errno to zero so we can distinguish between a readdir failure
2525 and when readdir simply finds that there are no more entries. */
2527 next
= readdir (dirp
);
2530 if (! file_ignored (next
->d_name
))
2532 enum filetype type
= unknown
;
2534 #if HAVE_STRUCT_DIRENT_D_TYPE
2535 switch (next
->d_type
)
2537 case DT_BLK
: type
= blockdev
; break;
2538 case DT_CHR
: type
= chardev
; break;
2539 case DT_DIR
: type
= directory
; break;
2540 case DT_FIFO
: type
= fifo
; break;
2541 case DT_LNK
: type
= symbolic_link
; break;
2542 case DT_REG
: type
= normal
; break;
2543 case DT_SOCK
: type
= sock
; break;
2545 case DT_WHT
: type
= whiteout
; break;
2549 total_blocks
+= gobble_file (next
->d_name
, type
,
2550 RELIABLE_D_INO (next
),
2553 /* In this narrow case, print out each name right away, so
2554 ls uses constant memory while processing the entries of
2555 this directory. Useful when there are many (millions)
2556 of entries in a directory. */
2557 if (format
== one_per_line
&& sort_type
== sort_none
2558 && !print_block_size
&& !recursive
)
2560 /* We must call sort_files in spite of
2561 "sort_type == sort_none" for its initialization
2562 of the sorted_file vector. */
2564 print_current_files ();
2569 else if (errno
!= 0)
2571 file_failure (command_line_arg
, _("reading directory %s"), name
);
2572 if (errno
!= EOVERFLOW
)
2579 if (closedir (dirp
) != 0)
2581 file_failure (command_line_arg
, _("closing directory %s"), name
);
2582 /* Don't return; print whatever we got. */
2585 /* Sort the directory contents. */
2588 /* If any member files are subdirectories, perhaps they should have their
2589 contents listed rather than being mentioned here as files. */
2592 extract_dirs_from_files (name
, command_line_arg
);
2594 if (format
== long_format
|| print_block_size
)
2597 char buf
[LONGEST_HUMAN_READABLE
+ 1];
2601 DIRED_FPUTS (p
, stdout
, strlen (p
));
2602 DIRED_PUTCHAR (' ');
2603 p
= human_readable (total_blocks
, buf
, human_output_opts
,
2604 ST_NBLOCKSIZE
, output_block_size
);
2605 DIRED_FPUTS (p
, stdout
, strlen (p
));
2606 DIRED_PUTCHAR ('\n');
2610 print_current_files ();
2613 /* Add `pattern' to the list of patterns for which files that match are
2617 add_ignore_pattern (const char *pattern
)
2619 struct ignore_pattern
*ignore
;
2621 ignore
= xmalloc (sizeof *ignore
);
2622 ignore
->pattern
= pattern
;
2623 /* Add it to the head of the linked list. */
2624 ignore
->next
= ignore_patterns
;
2625 ignore_patterns
= ignore
;
2628 /* Return true if one of the PATTERNS matches FILE. */
2631 patterns_match (struct ignore_pattern
const *patterns
, char const *file
)
2633 struct ignore_pattern
const *p
;
2634 for (p
= patterns
; p
; p
= p
->next
)
2635 if (fnmatch (p
->pattern
, file
, FNM_PERIOD
) == 0)
2640 /* Return true if FILE should be ignored. */
2643 file_ignored (char const *name
)
2645 return ((ignore_mode
!= IGNORE_MINIMAL
2647 && (ignore_mode
== IGNORE_DEFAULT
|| ! name
[1 + (name
[1] == '.')]))
2648 || (ignore_mode
== IGNORE_DEFAULT
2649 && patterns_match (hide_patterns
, name
))
2650 || patterns_match (ignore_patterns
, name
));
2653 /* POSIX requires that a file size be printed without a sign, even
2654 when negative. Assume the typical case where negative sizes are
2655 actually positive values that have wrapped around. */
2658 unsigned_file_size (off_t size
)
2660 return size
+ (size
< 0) * ((uintmax_t) OFF_T_MAX
- OFF_T_MIN
+ 1);
2664 /* Return true if NAME has a capability (see linux/capability.h) */
2666 has_capability (char const *name
)
2671 cap_t cap_d
= cap_get_file (name
);
2675 result
= cap_to_text (cap_d
, NULL
);
2680 /* check if human-readable capability string is empty */
2681 has_cap
= !!*result
;
2688 has_capability (char const *name ATTRIBUTE_UNUSED
)
2694 /* Enter and remove entries in the table `cwd_file'. */
2696 /* Empty the table of files. */
2703 for (i
= 0; i
< cwd_n_used
; i
++)
2705 struct fileinfo
*f
= sorted_file
[i
];
2708 if (f
->scontext
!= UNKNOWN_SECURITY_CONTEXT
)
2709 freecon (f
->scontext
);
2713 any_has_acl
= false;
2714 inode_number_width
= 0;
2715 block_size_width
= 0;
2721 major_device_number_width
= 0;
2722 minor_device_number_width
= 0;
2723 file_size_width
= 0;
2726 /* Add a file to the current table of files.
2727 Verify that the file exists, and print an error message if it does not.
2728 Return the number of blocks that the file occupies. */
2731 gobble_file (char const *name
, enum filetype type
, ino_t inode
,
2732 bool command_line_arg
, char const *dirname
)
2734 uintmax_t blocks
= 0;
2737 /* An inode value prior to gobble_file necessarily came from readdir,
2738 which is not used for command line arguments. */
2739 assert (! command_line_arg
|| inode
== NOT_AN_INODE_NUMBER
);
2741 if (cwd_n_used
== cwd_n_alloc
)
2743 cwd_file
= xnrealloc (cwd_file
, cwd_n_alloc
, 2 * sizeof *cwd_file
);
2747 f
= &cwd_file
[cwd_n_used
];
2748 memset (f
, '\0', sizeof *f
);
2749 f
->stat
.st_ino
= inode
;
2752 if (command_line_arg
2753 || format_needs_stat
2754 /* When coloring a directory (we may know the type from
2755 direct.d_type), we have to stat it in order to indicate
2756 sticky and/or other-writable attributes. */
2757 || (type
== directory
&& print_with_color
)
2758 /* When dereferencing symlinks, the inode and type must come from
2759 stat, but readdir provides the inode and type of lstat. */
2760 || ((print_inode
|| format_needs_type
)
2761 && (type
== symbolic_link
|| type
== unknown
)
2762 && (dereference
== DEREF_ALWAYS
2763 || (command_line_arg
&& dereference
!= DEREF_NEVER
)
2764 || color_symlink_as_referent
|| check_symlink_color
))
2765 /* Command line dereferences are already taken care of by the above
2766 assertion that the inode number is not yet known. */
2767 || (print_inode
&& inode
== NOT_AN_INODE_NUMBER
)
2768 || (format_needs_type
2769 && (type
== unknown
|| command_line_arg
2770 /* --indicator-style=classify (aka -F)
2771 requires that we stat each regular file
2772 to see if it's executable. */
2773 || (type
== normal
&& (indicator_style
== classify
2774 /* This is so that --color ends up
2775 highlighting files with these mode
2776 bits set even when options like -F are
2777 not specified. Note we do a redundant
2778 stat in the very unlikely case where
2779 C_CAP is set but not the others. */
2780 || (print_with_color
2781 && (is_colored (C_EXEC
)
2782 || is_colored (C_SETUID
)
2783 || is_colored (C_SETGID
)
2784 || is_colored (C_CAP
)))
2788 /* Absolute name of this file. */
2789 char *absolute_name
;
2793 if (name
[0] == '/' || dirname
[0] == 0)
2794 absolute_name
= (char *) name
;
2797 absolute_name
= alloca (strlen (name
) + strlen (dirname
) + 2);
2798 attach (absolute_name
, dirname
, name
);
2801 switch (dereference
)
2804 err
= stat (absolute_name
, &f
->stat
);
2808 case DEREF_COMMAND_LINE_ARGUMENTS
:
2809 case DEREF_COMMAND_LINE_SYMLINK_TO_DIR
:
2810 if (command_line_arg
)
2813 err
= stat (absolute_name
, &f
->stat
);
2816 if (dereference
== DEREF_COMMAND_LINE_ARGUMENTS
)
2819 need_lstat
= (err
< 0
2821 : ! S_ISDIR (f
->stat
.st_mode
));
2825 /* stat failed because of ENOENT, maybe indicating a dangling
2826 symlink. Or stat succeeded, ABSOLUTE_NAME does not refer to a
2827 directory, and --dereference-command-line-symlink-to-dir is
2828 in effect. Fall through so that we call lstat instead. */
2831 default: /* DEREF_NEVER */
2832 err
= lstat (absolute_name
, &f
->stat
);
2839 /* Failure to stat a command line argument leads to
2840 an exit status of 2. For other files, stat failure
2841 provokes an exit status of 1. */
2842 file_failure (command_line_arg
,
2843 _("cannot access %s"), absolute_name
);
2844 if (command_line_arg
)
2847 f
->name
= xstrdup (name
);
2855 /* Note has_capability() adds around 30% runtime to `ls --color` */
2856 if ((type
== normal
|| S_ISREG (f
->stat
.st_mode
))
2857 && print_with_color
&& is_colored (C_CAP
))
2858 f
->has_capability
= has_capability (absolute_name
);
2860 if (format
== long_format
|| print_scontext
)
2862 bool have_selinux
= false;
2863 bool have_acl
= false;
2864 int attr_len
= (do_deref
2865 ? getfilecon (absolute_name
, &f
->scontext
)
2866 : lgetfilecon (absolute_name
, &f
->scontext
));
2867 err
= (attr_len
< 0);
2870 have_selinux
= ! STREQ ("unlabeled", f
->scontext
);
2873 f
->scontext
= UNKNOWN_SECURITY_CONTEXT
;
2875 /* When requesting security context information, don't make
2876 ls fail just because the file (even a command line argument)
2877 isn't on the right type of file system. I.e., a getfilecon
2878 failure isn't in the same class as a stat failure. */
2879 if (errno
== ENOTSUP
|| errno
== EOPNOTSUPP
|| errno
== ENODATA
)
2883 if (err
== 0 && format
== long_format
)
2885 int n
= file_has_acl (absolute_name
, &f
->stat
);
2890 f
->acl_type
= (!have_selinux
&& !have_acl
2892 : (have_selinux
&& !have_acl
2893 ? ACL_T_SELINUX_ONLY
2895 any_has_acl
|= f
->acl_type
!= ACL_T_NONE
;
2898 error (0, errno
, "%s", quotearg_colon (absolute_name
));
2901 if (S_ISLNK (f
->stat
.st_mode
)
2902 && (format
== long_format
|| check_symlink_color
))
2905 struct stat linkstats
;
2907 get_link_name (absolute_name
, f
, command_line_arg
);
2908 linkname
= make_link_name (absolute_name
, f
->linkname
);
2910 /* Avoid following symbolic links when possible, ie, when
2911 they won't be traced and when no indicator is needed. */
2913 && (file_type
<= indicator_style
|| check_symlink_color
)
2914 && stat (linkname
, &linkstats
) == 0)
2918 /* Symbolic links to directories that are mentioned on the
2919 command line are automatically traced if not being
2921 if (!command_line_arg
|| format
== long_format
2922 || !S_ISDIR (linkstats
.st_mode
))
2924 /* Get the linked-to file's mode for the filetype indicator
2925 in long listings. */
2926 f
->linkmode
= linkstats
.st_mode
;
2932 /* When not distinguishing types of symlinks, pretend we know that
2933 it is stat'able, so that it will be colored as a regular symlink,
2934 and not as an orphan. */
2935 if (S_ISLNK (f
->stat
.st_mode
) && !check_symlink_color
)
2938 if (S_ISLNK (f
->stat
.st_mode
))
2939 f
->filetype
= symbolic_link
;
2940 else if (S_ISDIR (f
->stat
.st_mode
))
2942 if (command_line_arg
&& !immediate_dirs
)
2943 f
->filetype
= arg_directory
;
2945 f
->filetype
= directory
;
2948 f
->filetype
= normal
;
2950 blocks
= ST_NBLOCKS (f
->stat
);
2951 if (format
== long_format
|| print_block_size
)
2953 char buf
[LONGEST_HUMAN_READABLE
+ 1];
2954 int len
= mbswidth (human_readable (blocks
, buf
, human_output_opts
,
2955 ST_NBLOCKSIZE
, output_block_size
),
2957 if (block_size_width
< len
)
2958 block_size_width
= len
;
2961 if (format
== long_format
)
2965 int len
= format_user_width (f
->stat
.st_uid
);
2966 if (owner_width
< len
)
2972 int len
= format_group_width (f
->stat
.st_gid
);
2973 if (group_width
< len
)
2979 int len
= format_user_width (f
->stat
.st_author
);
2980 if (author_width
< len
)
2987 int len
= strlen (f
->scontext
);
2988 if (scontext_width
< len
)
2989 scontext_width
= len
;
2992 if (format
== long_format
)
2994 char b
[INT_BUFSIZE_BOUND (uintmax_t)];
2995 int b_len
= strlen (umaxtostr (f
->stat
.st_nlink
, b
));
2996 if (nlink_width
< b_len
)
2997 nlink_width
= b_len
;
2999 if (S_ISCHR (f
->stat
.st_mode
) || S_ISBLK (f
->stat
.st_mode
))
3001 char buf
[INT_BUFSIZE_BOUND (uintmax_t)];
3002 int len
= strlen (umaxtostr (major (f
->stat
.st_rdev
), buf
));
3003 if (major_device_number_width
< len
)
3004 major_device_number_width
= len
;
3005 len
= strlen (umaxtostr (minor (f
->stat
.st_rdev
), buf
));
3006 if (minor_device_number_width
< len
)
3007 minor_device_number_width
= len
;
3008 len
= major_device_number_width
+ 2 + minor_device_number_width
;
3009 if (file_size_width
< len
)
3010 file_size_width
= len
;
3014 char buf
[LONGEST_HUMAN_READABLE
+ 1];
3015 uintmax_t size
= unsigned_file_size (f
->stat
.st_size
);
3016 int len
= mbswidth (human_readable (size
, buf
, human_output_opts
,
3017 1, file_output_block_size
),
3019 if (file_size_width
< len
)
3020 file_size_width
= len
;
3027 char buf
[INT_BUFSIZE_BOUND (uintmax_t)];
3028 int len
= strlen (umaxtostr (f
->stat
.st_ino
, buf
));
3029 if (inode_number_width
< len
)
3030 inode_number_width
= len
;
3033 f
->name
= xstrdup (name
);
3039 /* Return true if F refers to a directory. */
3041 is_directory (const struct fileinfo
*f
)
3043 return f
->filetype
== directory
|| f
->filetype
== arg_directory
;
3046 /* Put the name of the file that FILENAME is a symbolic link to
3047 into the LINKNAME field of `f'. COMMAND_LINE_ARG indicates whether
3048 FILENAME is a command-line argument. */
3051 get_link_name (char const *filename
, struct fileinfo
*f
, bool command_line_arg
)
3053 f
->linkname
= areadlink_with_size (filename
, f
->stat
.st_size
);
3054 if (f
->linkname
== NULL
)
3055 file_failure (command_line_arg
, _("cannot read symbolic link %s"),
3059 /* If `linkname' is a relative name and `name' contains one or more
3060 leading directories, return `linkname' with those directories
3061 prepended; otherwise, return a copy of `linkname'.
3062 If `linkname' is zero, return zero. */
3065 make_link_name (char const *name
, char const *linkname
)
3073 if (*linkname
== '/')
3074 return xstrdup (linkname
);
3076 /* The link is to a relative name. Prepend any leading directory
3077 in `name' to the link name. */
3078 linkbuf
= strrchr (name
, '/');
3080 return xstrdup (linkname
);
3082 bufsiz
= linkbuf
- name
+ 1;
3083 linkbuf
= xmalloc (bufsiz
+ strlen (linkname
) + 1);
3084 strncpy (linkbuf
, name
, bufsiz
);
3085 strcpy (linkbuf
+ bufsiz
, linkname
);
3089 /* Return true if the last component of NAME is `.' or `..'
3090 This is so we don't try to recurse on `././././. ...' */
3093 basename_is_dot_or_dotdot (const char *name
)
3095 char const *base
= last_component (name
);
3096 return dot_or_dotdot (base
);
3099 /* Remove any entries from CWD_FILE that are for directories,
3100 and queue them to be listed as directories instead.
3101 DIRNAME is the prefix to prepend to each dirname
3102 to make it correct relative to ls's working dir;
3103 if it is null, no prefix is needed and "." and ".." should not be ignored.
3104 If COMMAND_LINE_ARG is true, this directory was mentioned at the top level,
3105 This is desirable when processing directories recursively. */
3108 extract_dirs_from_files (char const *dirname
, bool command_line_arg
)
3112 bool ignore_dot_and_dot_dot
= (dirname
!= NULL
);
3114 if (dirname
&& LOOP_DETECT
)
3116 /* Insert a marker entry first. When we dequeue this marker entry,
3117 we'll know that DIRNAME has been processed and may be removed
3118 from the set of active directories. */
3119 queue_directory (NULL
, dirname
, false);
3122 /* Queue the directories last one first, because queueing reverses the
3124 for (i
= cwd_n_used
; i
-- != 0; )
3126 struct fileinfo
*f
= sorted_file
[i
];
3128 if (is_directory (f
)
3129 && (! ignore_dot_and_dot_dot
3130 || ! basename_is_dot_or_dotdot (f
->name
)))
3132 if (!dirname
|| f
->name
[0] == '/')
3133 queue_directory (f
->name
, f
->linkname
, command_line_arg
);
3136 char *name
= file_name_concat (dirname
, f
->name
, NULL
);
3137 queue_directory (name
, f
->linkname
, command_line_arg
);
3140 if (f
->filetype
== arg_directory
)
3145 /* Now delete the directories from the table, compacting all the remaining
3148 for (i
= 0, j
= 0; i
< cwd_n_used
; i
++)
3150 struct fileinfo
*f
= sorted_file
[i
];
3152 j
+= (f
->filetype
!= arg_directory
);
3157 /* Use strcoll to compare strings in this locale. If an error occurs,
3158 report an error and longjmp to failed_strcoll. */
3160 static jmp_buf failed_strcoll
;
3163 xstrcoll (char const *a
, char const *b
)
3167 diff
= strcoll (a
, b
);
3170 error (0, errno
, _("cannot compare file names %s and %s"),
3171 quote_n (0, a
), quote_n (1, b
));
3172 set_exit_status (false);
3173 longjmp (failed_strcoll
, 1);
3178 /* Comparison routines for sorting the files. */
3180 typedef void const *V
;
3181 typedef int (*qsortFunc
)(V a
, V b
);
3183 /* Used below in DEFINE_SORT_FUNCTIONS for _df_ sort function variants.
3184 The do { ... } while(0) makes it possible to use the macro more like
3185 a statement, without violating C89 rules: */
3186 #define DIRFIRST_CHECK(a, b) \
3189 bool a_is_dir = is_directory ((struct fileinfo const *) a); \
3190 bool b_is_dir = is_directory ((struct fileinfo const *) b); \
3191 if (a_is_dir && !b_is_dir) \
3192 return -1; /* a goes before b */ \
3193 if (!a_is_dir && b_is_dir) \
3194 return 1; /* b goes before a */ \
3198 /* Define the 8 different sort function variants required for each sortkey.
3199 KEY_NAME is a token describing the sort key, e.g., ctime, atime, size.
3200 KEY_CMP_FUNC is a function to compare records based on that key, e.g.,
3201 ctime_cmp, atime_cmp, size_cmp. Append KEY_NAME to the string,
3202 '[rev_][x]str{cmp|coll}[_df]_', to create each function name. */
3203 #define DEFINE_SORT_FUNCTIONS(key_name, key_cmp_func) \
3204 /* direct, non-dirfirst versions */ \
3205 static int xstrcoll_##key_name (V a, V b) \
3206 { return key_cmp_func (a, b, xstrcoll); } \
3207 static int strcmp_##key_name (V a, V b) \
3208 { return key_cmp_func (a, b, strcmp); } \
3210 /* reverse, non-dirfirst versions */ \
3211 static int rev_xstrcoll_##key_name (V a, V b) \
3212 { return key_cmp_func (b, a, xstrcoll); } \
3213 static int rev_strcmp_##key_name (V a, V b) \
3214 { return key_cmp_func (b, a, strcmp); } \
3216 /* direct, dirfirst versions */ \
3217 static int xstrcoll_df_##key_name (V a, V b) \
3218 { DIRFIRST_CHECK (a, b); return key_cmp_func (a, b, xstrcoll); } \
3219 static int strcmp_df_##key_name (V a, V b) \
3220 { DIRFIRST_CHECK (a, b); return key_cmp_func (a, b, strcmp); } \
3222 /* reverse, dirfirst versions */ \
3223 static int rev_xstrcoll_df_##key_name (V a, V b) \
3224 { DIRFIRST_CHECK (a, b); return key_cmp_func (b, a, xstrcoll); } \
3225 static int rev_strcmp_df_##key_name (V a, V b) \
3226 { DIRFIRST_CHECK (a, b); return key_cmp_func (b, a, strcmp); }
3229 cmp_ctime (struct fileinfo
const *a
, struct fileinfo
const *b
,
3230 int (*cmp
) (char const *, char const *))
3232 int diff
= timespec_cmp (get_stat_ctime (&b
->stat
),
3233 get_stat_ctime (&a
->stat
));
3234 return diff
? diff
: cmp (a
->name
, b
->name
);
3238 cmp_mtime (struct fileinfo
const *a
, struct fileinfo
const *b
,
3239 int (*cmp
) (char const *, char const *))
3241 int diff
= timespec_cmp (get_stat_mtime (&b
->stat
),
3242 get_stat_mtime (&a
->stat
));
3243 return diff
? diff
: cmp (a
->name
, b
->name
);
3247 cmp_atime (struct fileinfo
const *a
, struct fileinfo
const *b
,
3248 int (*cmp
) (char const *, char const *))
3250 int diff
= timespec_cmp (get_stat_atime (&b
->stat
),
3251 get_stat_atime (&a
->stat
));
3252 return diff
? diff
: cmp (a
->name
, b
->name
);
3256 cmp_size (struct fileinfo
const *a
, struct fileinfo
const *b
,
3257 int (*cmp
) (char const *, char const *))
3259 int diff
= longdiff (b
->stat
.st_size
, a
->stat
.st_size
);
3260 return diff
? diff
: cmp (a
->name
, b
->name
);
3264 cmp_name (struct fileinfo
const *a
, struct fileinfo
const *b
,
3265 int (*cmp
) (char const *, char const *))
3267 return cmp (a
->name
, b
->name
);
3270 /* Compare file extensions. Files with no extension are `smallest'.
3271 If extensions are the same, compare by filenames instead. */
3274 cmp_extension (struct fileinfo
const *a
, struct fileinfo
const *b
,
3275 int (*cmp
) (char const *, char const *))
3277 char const *base1
= strrchr (a
->name
, '.');
3278 char const *base2
= strrchr (b
->name
, '.');
3279 int diff
= cmp (base1
? base1
: "", base2
? base2
: "");
3280 return diff
? diff
: cmp (a
->name
, b
->name
);
3283 DEFINE_SORT_FUNCTIONS (ctime
, cmp_ctime
)
3284 DEFINE_SORT_FUNCTIONS (mtime
, cmp_mtime
)
3285 DEFINE_SORT_FUNCTIONS (atime
, cmp_atime
)
3286 DEFINE_SORT_FUNCTIONS (size
, cmp_size
)
3287 DEFINE_SORT_FUNCTIONS (name
, cmp_name
)
3288 DEFINE_SORT_FUNCTIONS (extension
, cmp_extension
)
3290 /* Compare file versions.
3291 Unlike all other compare functions above, cmp_version depends only
3292 on filevercmp, which does not fail (even for locale reasons), and does not
3293 need a secondary sort key. See lib/filevercmp.h for function description.
3295 All the other sort options, in fact, need xstrcoll and strcmp variants,
3296 because they all use a string comparison (either as the primary or secondary
3297 sort key), and xstrcoll has the ability to do a longjmp if strcoll fails for
3298 locale reasons. Lastly, filevercmp is ALWAYS available with gnulib. */
3300 cmp_version (struct fileinfo
const *a
, struct fileinfo
const *b
)
3302 return filevercmp (a
->name
, b
->name
);
3305 static int xstrcoll_version (V a
, V b
)
3306 { return cmp_version (a
, b
); }
3307 static int rev_xstrcoll_version (V a
, V b
)
3308 { return cmp_version (b
, a
); }
3309 static int xstrcoll_df_version (V a
, V b
)
3310 { DIRFIRST_CHECK (a
, b
); return cmp_version (a
, b
); }
3311 static int rev_xstrcoll_df_version (V a
, V b
)
3312 { DIRFIRST_CHECK (a
, b
); return cmp_version (b
, a
); }
3315 /* We have 2^3 different variants for each sortkey function
3316 (for 3 independent sort modes).
3317 The function pointers stored in this array must be dereferenced as:
3319 sort_variants[sort_key][use_strcmp][reverse][dirs_first]
3321 Note that the order in which sortkeys are listed in the function pointer
3322 array below is defined by the order of the elements in the time_type and
3325 #define LIST_SORTFUNCTION_VARIANTS(key_name) \
3328 { xstrcoll_##key_name, xstrcoll_df_##key_name }, \
3329 { rev_xstrcoll_##key_name, rev_xstrcoll_df_##key_name }, \
3332 { strcmp_##key_name, strcmp_df_##key_name }, \
3333 { rev_strcmp_##key_name, rev_strcmp_df_##key_name }, \
3337 static qsortFunc
const sort_functions
[][2][2][2] =
3339 LIST_SORTFUNCTION_VARIANTS (name
),
3340 LIST_SORTFUNCTION_VARIANTS (extension
),
3341 LIST_SORTFUNCTION_VARIANTS (size
),
3345 { xstrcoll_version
, xstrcoll_df_version
},
3346 { rev_xstrcoll_version
, rev_xstrcoll_df_version
},
3349 /* We use NULL for the strcmp variants of version comparison
3350 since as explained in cmp_version definition, version comparison
3351 does not rely on xstrcoll, so it will never longjmp, and never
3352 need to try the strcmp fallback. */
3359 /* last are time sort functions */
3360 LIST_SORTFUNCTION_VARIANTS (mtime
),
3361 LIST_SORTFUNCTION_VARIANTS (ctime
),
3362 LIST_SORTFUNCTION_VARIANTS (atime
)
3365 /* The number of sortkeys is calculated as
3366 the number of elements in the sort_type enum (i.e. sort_numtypes) +
3367 the number of elements in the time_type enum (i.e. time_numtypes) - 1
3368 This is because when sort_type==sort_time, we have up to
3369 time_numtypes possible sortkeys.
3371 This line verifies at compile-time that the array of sort functions has been
3372 initialized for all possible sortkeys. */
3373 verify (ARRAY_CARDINALITY (sort_functions
)
3374 == sort_numtypes
+ time_numtypes
- 1 );
3376 /* Set up SORTED_FILE to point to the in-use entries in CWD_FILE, in order. */
3379 initialize_ordering_vector (void)
3382 for (i
= 0; i
< cwd_n_used
; i
++)
3383 sorted_file
[i
] = &cwd_file
[i
];
3386 /* Sort the files now in the table. */
3393 if (sorted_file_alloc
< cwd_n_used
+ cwd_n_used
/ 2)
3396 sorted_file
= xnmalloc (cwd_n_used
, 3 * sizeof *sorted_file
);
3397 sorted_file_alloc
= 3 * cwd_n_used
;
3400 initialize_ordering_vector ();
3402 if (sort_type
== sort_none
)
3405 /* Try strcoll. If it fails, fall back on strcmp. We can't safely
3406 ignore strcoll failures, as a failing strcoll might be a
3407 comparison function that is not a total order, and if we ignored
3408 the failure this might cause qsort to dump core. */
3410 if (! setjmp (failed_strcoll
))
3411 use_strcmp
= false; /* strcoll() succeeded */
3415 assert (sort_type
!= sort_version
);
3416 initialize_ordering_vector ();
3419 /* When sort_type == sort_time, use time_type as subindex. */
3420 mpsort ((void const **) sorted_file
, cwd_n_used
,
3421 sort_functions
[sort_type
+ (sort_type
== sort_time
? time_type
: 0)]
3422 [use_strcmp
][sort_reverse
]
3423 [directories_first
]);
3426 /* List all the files now in the table. */
3429 print_current_files (void)
3436 for (i
= 0; i
< cwd_n_used
; i
++)
3438 print_file_name_and_frills (sorted_file
[i
], 0);
3444 print_many_per_line ();
3448 print_horizontal ();
3452 print_with_commas ();
3456 for (i
= 0; i
< cwd_n_used
; i
++)
3458 set_normal_color ();
3459 print_long_format (sorted_file
[i
]);
3460 DIRED_PUTCHAR ('\n');
3466 /* Replace the first %b with precomputed aligned month names.
3467 Note on glibc-2.7 at least, this speeds up the whole `ls -lU`
3468 process by around 17%, compared to letting strftime() handle the %b. */
3471 align_nstrftime (char *buf
, size_t size
, char const *fmt
, struct tm
const *tm
,
3472 int __utc
, int __ns
)
3474 const char *nfmt
= fmt
;
3475 /* In the unlikely event that rpl_fmt below is not large enough,
3476 the replacement is not done. A malloc here slows ls down by 2% */
3477 char rpl_fmt
[sizeof (abmon
[0]) + 100];
3479 if (required_mon_width
&& (pb
= strstr (fmt
, "%b")))
3481 if (strlen (fmt
) < (sizeof (rpl_fmt
) - sizeof (abmon
[0]) + 2))
3483 char *pfmt
= rpl_fmt
;
3486 pfmt
= mempcpy (pfmt
, fmt
, pb
- fmt
);
3487 pfmt
= stpcpy (pfmt
, abmon
[tm
->tm_mon
]);
3488 strcpy (pfmt
, pb
+ 2);
3491 size_t ret
= nstrftime (buf
, size
, nfmt
, tm
, __utc
, __ns
);
3495 /* Return the expected number of columns in a long-format time stamp,
3496 or zero if it cannot be calculated. */
3499 long_time_expected_width (void)
3501 static int width
= -1;
3506 struct tm
const *tm
= localtime (&epoch
);
3507 char buf
[TIME_STAMP_LEN_MAXIMUM
+ 1];
3509 /* In case you're wondering if localtime can fail with an input time_t
3510 value of 0, let's just say it's very unlikely, but not inconceivable.
3511 The TZ environment variable would have to specify a time zone that
3512 is 2**31-1900 years or more ahead of UTC. This could happen only on
3513 a 64-bit system that blindly accepts e.g., TZ=UTC+20000000000000.
3514 However, this is not possible with Solaris 10 or glibc-2.3.5, since
3515 their implementations limit the offset to 167:59 and 24:00, resp. */
3519 align_nstrftime (buf
, sizeof buf
, long_time_format
[0], tm
, 0, 0);
3521 width
= mbsnwidth (buf
, len
, 0);
3531 /* Print the user or group name NAME, with numeric id ID, using a
3532 print width of WIDTH columns. */
3535 format_user_or_group (char const *name
, unsigned long int id
, int width
)
3541 int width_gap
= width
- mbswidth (name
, 0);
3542 int pad
= MAX (0, width_gap
);
3543 fputs (name
, stdout
);
3544 len
= strlen (name
) + pad
;
3552 printf ("%*lu ", width
, id
);
3556 dired_pos
+= len
+ 1;
3559 /* Print the name or id of the user with id U, using a print width of
3563 format_user (uid_t u
, int width
, bool stat_ok
)
3565 format_user_or_group (! stat_ok
? "?" :
3566 (numeric_ids
? NULL
: getuser (u
)), u
, width
);
3569 /* Likewise, for groups. */
3572 format_group (gid_t g
, int width
, bool stat_ok
)
3574 format_user_or_group (! stat_ok
? "?" :
3575 (numeric_ids
? NULL
: getgroup (g
)), g
, width
);
3578 /* Return the number of columns that format_user_or_group will print. */
3581 format_user_or_group_width (char const *name
, unsigned long int id
)
3585 int len
= mbswidth (name
, 0);
3586 return MAX (0, len
);
3590 char buf
[INT_BUFSIZE_BOUND (unsigned long int)];
3591 sprintf (buf
, "%lu", id
);
3592 return strlen (buf
);
3596 /* Return the number of columns that format_user will print. */
3599 format_user_width (uid_t u
)
3601 return format_user_or_group_width (numeric_ids
? NULL
: getuser (u
), u
);
3604 /* Likewise, for groups. */
3607 format_group_width (gid_t g
)
3609 return format_user_or_group_width (numeric_ids
? NULL
: getgroup (g
), g
);
3612 /* Return a pointer to a formatted version of F->stat.st_ino,
3613 possibly using buffer, BUF, of length BUFLEN, which must be at least
3614 INT_BUFSIZE_BOUND (uintmax_t) bytes. */
3616 format_inode (char *buf
, size_t buflen
, const struct fileinfo
*f
)
3618 assert (INT_BUFSIZE_BOUND (uintmax_t) <= buflen
);
3619 return (f
->stat_ok
&& f
->stat
.st_ino
!= NOT_AN_INODE_NUMBER
3620 ? umaxtostr (f
->stat
.st_ino
, buf
)
3624 /* Print information about F in long format. */
3626 print_long_format (const struct fileinfo
*f
)
3630 [LONGEST_HUMAN_READABLE
+ 1 /* inode */
3631 + LONGEST_HUMAN_READABLE
+ 1 /* size in blocks */
3632 + sizeof (modebuf
) - 1 + 1 /* mode string */
3633 + INT_BUFSIZE_BOUND (uintmax_t) /* st_nlink */
3634 + LONGEST_HUMAN_READABLE
+ 2 /* major device number */
3635 + LONGEST_HUMAN_READABLE
+ 1 /* minor device number */
3636 + TIME_STAMP_LEN_MAXIMUM
+ 1 /* max length of time/date */
3640 struct timespec when_timespec
;
3641 struct tm
*when_local
;
3643 /* Compute the mode string, except remove the trailing space if no
3644 file in this directory has an ACL or SELinux security context. */
3646 filemodestring (&f
->stat
, modebuf
);
3649 modebuf
[0] = filetype_letter
[f
->filetype
];
3650 memset (modebuf
+ 1, '?', 10);
3655 else if (f
->acl_type
== ACL_T_SELINUX_ONLY
)
3657 else if (f
->acl_type
== ACL_T_YES
)
3663 when_timespec
= get_stat_ctime (&f
->stat
);
3666 when_timespec
= get_stat_mtime (&f
->stat
);
3669 when_timespec
= get_stat_atime (&f
->stat
);
3679 char hbuf
[INT_BUFSIZE_BOUND (uintmax_t)];
3680 sprintf (p
, "%*s ", inode_number_width
,
3681 format_inode (hbuf
, sizeof hbuf
, f
));
3682 /* Increment by strlen (p) here, rather than by inode_number_width + 1.
3683 The latter is wrong when inode_number_width is zero. */
3687 if (print_block_size
)
3689 char hbuf
[LONGEST_HUMAN_READABLE
+ 1];
3690 char const *blocks
=
3693 : human_readable (ST_NBLOCKS (f
->stat
), hbuf
, human_output_opts
,
3694 ST_NBLOCKSIZE
, output_block_size
));
3696 for (pad
= block_size_width
- mbswidth (blocks
, 0); 0 < pad
; pad
--)
3698 while ((*p
++ = *blocks
++))
3703 /* The last byte of the mode string is the POSIX
3704 "optional alternate access method flag". */
3706 char hbuf
[INT_BUFSIZE_BOUND (uintmax_t)];
3707 sprintf (p
, "%s %*s ", modebuf
, nlink_width
,
3708 ! f
->stat_ok
? "?" : umaxtostr (f
->stat
.st_nlink
, hbuf
));
3710 /* Increment by strlen (p) here, rather than by, e.g.,
3711 sizeof modebuf - 2 + any_has_acl + 1 + nlink_width + 1.
3712 The latter is wrong when nlink_width is zero. */
3717 if (print_owner
|| print_group
|| print_author
|| print_scontext
)
3719 DIRED_FPUTS (buf
, stdout
, p
- buf
);
3722 format_user (f
->stat
.st_uid
, owner_width
, f
->stat_ok
);
3725 format_group (f
->stat
.st_gid
, group_width
, f
->stat_ok
);
3728 format_user (f
->stat
.st_author
, author_width
, f
->stat_ok
);
3731 format_user_or_group (f
->scontext
, 0, scontext_width
);
3737 && (S_ISCHR (f
->stat
.st_mode
) || S_ISBLK (f
->stat
.st_mode
)))
3739 char majorbuf
[INT_BUFSIZE_BOUND (uintmax_t)];
3740 char minorbuf
[INT_BUFSIZE_BOUND (uintmax_t)];
3741 int blanks_width
= (file_size_width
3742 - (major_device_number_width
+ 2
3743 + minor_device_number_width
));
3744 sprintf (p
, "%*s, %*s ",
3745 major_device_number_width
+ MAX (0, blanks_width
),
3746 umaxtostr (major (f
->stat
.st_rdev
), majorbuf
),
3747 minor_device_number_width
,
3748 umaxtostr (minor (f
->stat
.st_rdev
), minorbuf
));
3749 p
+= file_size_width
+ 1;
3753 char hbuf
[LONGEST_HUMAN_READABLE
+ 1];
3757 : human_readable (unsigned_file_size (f
->stat
.st_size
),
3758 hbuf
, human_output_opts
, 1, file_output_block_size
));
3760 for (pad
= file_size_width
- mbswidth (size
, 0); 0 < pad
; pad
--)
3762 while ((*p
++ = *size
++))
3767 when_local
= localtime (&when_timespec
.tv_sec
);
3771 if (f
->stat_ok
&& when_local
)
3773 struct timespec six_months_ago
;
3777 /* If the file appears to be in the future, update the current
3778 time, in case the file happens to have been modified since
3779 the last time we checked the clock. */
3780 if (timespec_cmp (current_time
, when_timespec
) < 0)
3782 /* Note that gettime may call gettimeofday which, on some non-
3783 compliant systems, clobbers the buffer used for localtime's result.
3784 But it's ok here, because we use a gettimeofday wrapper that
3785 saves and restores the buffer around the gettimeofday call. */
3786 gettime (¤t_time
);
3789 /* Consider a time to be recent if it is within the past six
3790 months. A Gregorian year has 365.2425 * 24 * 60 * 60 ==
3791 31556952 seconds on the average. Write this value as an
3792 integer constant to avoid floating point hassles. */
3793 six_months_ago
.tv_sec
= current_time
.tv_sec
- 31556952 / 2;
3794 six_months_ago
.tv_nsec
= current_time
.tv_nsec
;
3796 recent
= (timespec_cmp (six_months_ago
, when_timespec
) < 0
3797 && (timespec_cmp (when_timespec
, current_time
) < 0));
3798 fmt
= long_time_format
[recent
];
3800 /* We assume here that all time zones are offset from UTC by a
3801 whole number of seconds. */
3802 s
= align_nstrftime (p
, TIME_STAMP_LEN_MAXIMUM
+ 1, fmt
,
3803 when_local
, 0, when_timespec
.tv_nsec
);
3811 /* NUL-terminate the string -- fputs (via DIRED_FPUTS) requires it. */
3816 /* The time cannot be converted using the desired format, so
3817 print it as a huge integer number of seconds. */
3818 char hbuf
[INT_BUFSIZE_BOUND (intmax_t)];
3819 sprintf (p
, "%*s ", long_time_expected_width (),
3822 : timetostr (when_timespec
.tv_sec
, hbuf
)));
3823 /* FIXME: (maybe) We discarded when_timespec.tv_nsec. */
3827 DIRED_FPUTS (buf
, stdout
, p
- buf
);
3828 size_t w
= print_name_with_quoting (f
, false, &dired_obstack
, p
- buf
);
3830 if (f
->filetype
== symbolic_link
)
3834 DIRED_FPUTS_LITERAL (" -> ", stdout
);
3835 print_name_with_quoting (f
, true, NULL
, (p
- buf
) + w
+ 4);
3836 if (indicator_style
!= none
)
3837 print_type_indicator (true, f
->linkmode
, unknown
);
3840 else if (indicator_style
!= none
)
3841 print_type_indicator (f
->stat_ok
, f
->stat
.st_mode
, f
->filetype
);
3844 /* Output to OUT a quoted representation of the file name NAME,
3845 using OPTIONS to control quoting. Produce no output if OUT is NULL.
3846 Store the number of screen columns occupied by NAME's quoted
3847 representation into WIDTH, if non-NULL. Return the number of bytes
3851 quote_name (FILE *out
, const char *name
, struct quoting_options
const *options
,
3854 char smallbuf
[BUFSIZ
];
3855 size_t len
= quotearg_buffer (smallbuf
, sizeof smallbuf
, name
, -1, options
);
3857 size_t displayed_width
IF_LINT (= 0);
3859 if (len
< sizeof smallbuf
)
3863 buf
= alloca (len
+ 1);
3864 quotearg_buffer (buf
, len
+ 1, name
, -1, options
);
3867 if (qmark_funny_chars
)
3871 char const *p
= buf
;
3872 char const *plimit
= buf
+ len
;
3874 displayed_width
= 0;
3879 case ' ': case '!': case '"': case '#': case '%':
3880 case '&': case '\'': case '(': case ')': case '*':
3881 case '+': case ',': case '-': case '.': case '/':
3882 case '0': case '1': case '2': case '3': case '4':
3883 case '5': case '6': case '7': case '8': case '9':
3884 case ':': case ';': case '<': case '=': case '>':
3886 case 'A': case 'B': case 'C': case 'D': case 'E':
3887 case 'F': case 'G': case 'H': case 'I': case 'J':
3888 case 'K': case 'L': case 'M': case 'N': case 'O':
3889 case 'P': case 'Q': case 'R': case 'S': case 'T':
3890 case 'U': case 'V': case 'W': case 'X': case 'Y':
3892 case '[': case '\\': case ']': case '^': case '_':
3893 case 'a': case 'b': case 'c': case 'd': case 'e':
3894 case 'f': case 'g': case 'h': case 'i': case 'j':
3895 case 'k': case 'l': case 'm': case 'n': case 'o':
3896 case 'p': case 'q': case 'r': case 's': case 't':
3897 case 'u': case 'v': case 'w': case 'x': case 'y':
3898 case 'z': case '{': case '|': case '}': case '~':
3899 /* These characters are printable ASCII characters. */
3901 displayed_width
+= 1;
3904 /* If we have a multibyte sequence, copy it until we
3905 reach its end, replacing each non-printable multibyte
3906 character with a single question mark. */
3908 DECLARE_ZEROED_AGGREGATE (mbstate_t, mbstate
);
3915 bytes
= mbrtowc (&wc
, p
, plimit
- p
, &mbstate
);
3917 if (bytes
== (size_t) -1)
3919 /* An invalid multibyte sequence was
3920 encountered. Skip one input byte, and
3921 put a question mark. */
3924 displayed_width
+= 1;
3928 if (bytes
== (size_t) -2)
3930 /* An incomplete multibyte character
3931 at the end. Replace it entirely with
3935 displayed_width
+= 1;
3940 /* A null wide character was encountered. */
3946 /* A printable multibyte character.
3948 for (; bytes
> 0; --bytes
)
3950 displayed_width
+= w
;
3954 /* An unprintable multibyte character.
3955 Replace it entirely with a question
3959 displayed_width
+= 1;
3962 while (! mbsinit (&mbstate
));
3967 /* The buffer may have shrunk. */
3973 char const *plimit
= buf
+ len
;
3977 if (! isprint (to_uchar (*p
)))
3981 displayed_width
= len
;
3984 else if (width
!= NULL
)
3987 displayed_width
= mbsnwidth (buf
, len
, 0);
3990 char const *p
= buf
;
3991 char const *plimit
= buf
+ len
;
3993 displayed_width
= 0;
3996 if (isprint (to_uchar (*p
)))
4004 fwrite (buf
, 1, len
, out
);
4006 *width
= displayed_width
;
4011 print_name_with_quoting (const struct fileinfo
*f
,
4012 bool symlink_target
,
4013 struct obstack
*stack
,
4016 const char* name
= symlink_target
? f
->linkname
: f
->name
;
4018 bool used_color_this_time
4020 && (print_color_indicator (f
, symlink_target
)
4021 || is_colored (C_NORM
)));
4024 PUSH_CURRENT_DIRED_POS (stack
);
4026 size_t width
= quote_name (stdout
, name
, filename_quoting_options
, NULL
);
4030 PUSH_CURRENT_DIRED_POS (stack
);
4032 if (used_color_this_time
)
4035 prep_non_filename_text ();
4036 if (start_col
/ line_length
!= (start_col
+ width
- 1) / line_length
)
4037 put_indicator (&color_indicator
[C_CLR_TO_EOL
]);
4044 prep_non_filename_text (void)
4046 if (color_indicator
[C_END
].string
!= NULL
)
4047 put_indicator (&color_indicator
[C_END
]);
4050 put_indicator (&color_indicator
[C_LEFT
]);
4051 put_indicator (&color_indicator
[C_RESET
]);
4052 put_indicator (&color_indicator
[C_RIGHT
]);
4056 /* Print the file name of `f' with appropriate quoting.
4057 Also print file size, inode number, and filetype indicator character,
4058 as requested by switches. */
4061 print_file_name_and_frills (const struct fileinfo
*f
, size_t start_col
)
4063 char buf
[MAX (LONGEST_HUMAN_READABLE
+ 1, INT_BUFSIZE_BOUND (uintmax_t))];
4065 set_normal_color ();
4068 printf ("%*s ", format
== with_commas
? 0 : inode_number_width
,
4069 format_inode (buf
, sizeof buf
, f
));
4071 if (print_block_size
)
4072 printf ("%*s ", format
== with_commas
? 0 : block_size_width
,
4074 : human_readable (ST_NBLOCKS (f
->stat
), buf
, human_output_opts
,
4075 ST_NBLOCKSIZE
, output_block_size
));
4078 printf ("%*s ", format
== with_commas
? 0 : scontext_width
, f
->scontext
);
4080 size_t width
= print_name_with_quoting (f
, false, NULL
, start_col
);
4082 if (indicator_style
!= none
)
4083 width
+= print_type_indicator (f
->stat_ok
, f
->stat
.st_mode
, f
->filetype
);
4088 /* Given these arguments describing a file, return the single-byte
4089 type indicator, or 0. */
4091 get_type_indicator (bool stat_ok
, mode_t mode
, enum filetype type
)
4095 if (stat_ok
? S_ISREG (mode
) : type
== normal
)
4097 if (stat_ok
&& indicator_style
== classify
&& (mode
& S_IXUGO
))
4104 if (stat_ok
? S_ISDIR (mode
) : type
== directory
|| type
== arg_directory
)
4106 else if (indicator_style
== slash
)
4108 else if (stat_ok
? S_ISLNK (mode
) : type
== symbolic_link
)
4110 else if (stat_ok
? S_ISFIFO (mode
) : type
== fifo
)
4112 else if (stat_ok
? S_ISSOCK (mode
) : type
== sock
)
4114 else if (stat_ok
&& S_ISDOOR (mode
))
4123 print_type_indicator (bool stat_ok
, mode_t mode
, enum filetype type
)
4125 char c
= get_type_indicator (stat_ok
, mode
, type
);
4131 /* Returns whether any color sequence was printed. */
4133 print_color_indicator (const struct fileinfo
*f
, bool symlink_target
)
4135 enum indicator_no type
;
4136 struct color_ext_type
*ext
; /* Color extension */
4137 size_t len
; /* Length of name */
4146 linkok
= f
->linkok
- 1;
4151 mode
= FILE_OR_LINK_MODE (f
);
4155 /* Is this a nonexistent file? If so, linkok == -1. */
4157 if (linkok
== -1 && color_indicator
[C_MISSING
].string
!= NULL
)
4159 else if (!f
->stat_ok
)
4161 static enum indicator_no filetype_indicator
[] = FILETYPE_INDICATORS
;
4162 type
= filetype_indicator
[f
->filetype
];
4170 if ((mode
& S_ISUID
) != 0 && is_colored (C_SETUID
))
4172 else if ((mode
& S_ISGID
) != 0 && is_colored (C_SETGID
))
4174 else if (is_colored (C_CAP
) && f
->has_capability
)
4176 else if ((mode
& S_IXUGO
) != 0 && is_colored (C_EXEC
))
4178 else if ((1 < f
->stat
.st_nlink
) && is_colored (C_MULTIHARDLINK
))
4179 type
= C_MULTIHARDLINK
;
4181 else if (S_ISDIR (mode
))
4185 if ((mode
& S_ISVTX
) && (mode
& S_IWOTH
)
4186 && is_colored (C_STICKY_OTHER_WRITABLE
))
4187 type
= C_STICKY_OTHER_WRITABLE
;
4188 else if ((mode
& S_IWOTH
) != 0 && is_colored (C_OTHER_WRITABLE
))
4189 type
= C_OTHER_WRITABLE
;
4190 else if ((mode
& S_ISVTX
) != 0 && is_colored (C_STICKY
))
4193 else if (S_ISLNK (mode
))
4195 && (!strncmp (color_indicator
[C_LINK
].string
, "target", 6)
4196 || color_indicator
[C_ORPHAN
].string
))
4197 ? C_ORPHAN
: C_LINK
);
4198 else if (S_ISFIFO (mode
))
4200 else if (S_ISSOCK (mode
))
4202 else if (S_ISBLK (mode
))
4204 else if (S_ISCHR (mode
))
4206 else if (S_ISDOOR (mode
))
4210 /* Classify a file of some other type as C_ORPHAN. */
4215 /* Check the file's suffix only if still classified as C_FILE. */
4219 /* Test if NAME has a recognized suffix. */
4221 len
= strlen (name
);
4222 name
+= len
; /* Pointer to final \0. */
4223 for (ext
= color_ext_list
; ext
!= NULL
; ext
= ext
->next
)
4225 if (ext
->ext
.len
<= len
4226 && strncmp (name
- ext
->ext
.len
, ext
->ext
.string
,
4233 const struct bin_str
*const s
4234 = ext
? &(ext
->seq
) : &color_indicator
[type
];
4235 if (s
->string
!= NULL
)
4237 /* Need to reset so not dealing with attribute combinations */
4238 if (is_colored (C_NORM
))
4239 restore_default_color ();
4240 put_indicator (&color_indicator
[C_LEFT
]);
4242 put_indicator (&color_indicator
[C_RIGHT
]);
4250 /* Output a color indicator (which may contain nulls). */
4252 put_indicator (const struct bin_str
*ind
)
4257 prep_non_filename_text ();
4260 fwrite (ind
->string
, ind
->len
, 1, stdout
);
4264 length_of_file_name_and_frills (const struct fileinfo
*f
)
4268 char buf
[MAX (LONGEST_HUMAN_READABLE
+ 1, INT_BUFSIZE_BOUND (uintmax_t))];
4271 len
+= 1 + (format
== with_commas
4272 ? strlen (umaxtostr (f
->stat
.st_ino
, buf
))
4273 : inode_number_width
);
4275 if (print_block_size
)
4276 len
+= 1 + (format
== with_commas
4277 ? strlen (! f
->stat_ok
? "?"
4278 : human_readable (ST_NBLOCKS (f
->stat
), buf
,
4279 human_output_opts
, ST_NBLOCKSIZE
,
4281 : block_size_width
);
4284 len
+= 1 + (format
== with_commas
? strlen (f
->scontext
) : scontext_width
);
4286 quote_name (NULL
, f
->name
, filename_quoting_options
, &name_width
);
4289 if (indicator_style
!= none
)
4291 char c
= get_type_indicator (f
->stat_ok
, f
->stat
.st_mode
, f
->filetype
);
4299 print_many_per_line (void)
4301 size_t row
; /* Current row. */
4302 size_t cols
= calculate_columns (true);
4303 struct column_info
const *line_fmt
= &column_info
[cols
- 1];
4305 /* Calculate the number of rows that will be in each column except possibly
4306 for a short column on the right. */
4307 size_t rows
= cwd_n_used
/ cols
+ (cwd_n_used
% cols
!= 0);
4309 for (row
= 0; row
< rows
; row
++)
4312 size_t filesno
= row
;
4315 /* Print the next row. */
4318 struct fileinfo
const *f
= sorted_file
[filesno
];
4319 size_t name_length
= length_of_file_name_and_frills (f
);
4320 size_t max_name_length
= line_fmt
->col_arr
[col
++];
4321 print_file_name_and_frills (f
, pos
);
4324 if (filesno
>= cwd_n_used
)
4327 indent (pos
+ name_length
, pos
+ max_name_length
);
4328 pos
+= max_name_length
;
4335 print_horizontal (void)
4339 size_t cols
= calculate_columns (false);
4340 struct column_info
const *line_fmt
= &column_info
[cols
- 1];
4341 struct fileinfo
const *f
= sorted_file
[0];
4342 size_t name_length
= length_of_file_name_and_frills (f
);
4343 size_t max_name_length
= line_fmt
->col_arr
[0];
4345 /* Print first entry. */
4346 print_file_name_and_frills (f
, 0);
4349 for (filesno
= 1; filesno
< cwd_n_used
; ++filesno
)
4351 size_t col
= filesno
% cols
;
4360 indent (pos
+ name_length
, pos
+ max_name_length
);
4361 pos
+= max_name_length
;
4364 f
= sorted_file
[filesno
];
4365 print_file_name_and_frills (f
, pos
);
4367 name_length
= length_of_file_name_and_frills (f
);
4368 max_name_length
= line_fmt
->col_arr
[col
];
4374 print_with_commas (void)
4379 for (filesno
= 0; filesno
< cwd_n_used
; filesno
++)
4381 struct fileinfo
const *f
= sorted_file
[filesno
];
4382 size_t len
= length_of_file_name_and_frills (f
);
4388 if (pos
+ len
+ 2 < line_length
)
4400 putchar (separator
);
4403 print_file_name_and_frills (f
, pos
);
4409 /* Assuming cursor is at position FROM, indent up to position TO.
4410 Use a TAB character instead of two or more spaces whenever possible. */
4413 indent (size_t from
, size_t to
)
4417 if (tabsize
!= 0 && to
/ tabsize
> (from
+ 1) / tabsize
)
4420 from
+= tabsize
- from
% tabsize
;
4430 /* Put DIRNAME/NAME into DEST, handling `.' and `/' properly. */
4431 /* FIXME: maybe remove this function someday. See about using a
4432 non-malloc'ing version of file_name_concat. */
4435 attach (char *dest
, const char *dirname
, const char *name
)
4437 const char *dirnamep
= dirname
;
4439 /* Copy dirname if it is not ".". */
4440 if (dirname
[0] != '.' || dirname
[1] != 0)
4443 *dest
++ = *dirnamep
++;
4444 /* Add '/' if `dirname' doesn't already end with it. */
4445 if (dirnamep
> dirname
&& dirnamep
[-1] != '/')
4453 /* Allocate enough column info suitable for the current number of
4454 files and display columns, and initialize the info to represent the
4455 narrowest possible columns. */
4458 init_column_info (void)
4461 size_t max_cols
= MIN (max_idx
, cwd_n_used
);
4463 /* Currently allocated columns in column_info. */
4464 static size_t column_info_alloc
;
4466 if (column_info_alloc
< max_cols
)
4468 size_t new_column_info_alloc
;
4471 if (max_cols
< max_idx
/ 2)
4473 /* The number of columns is far less than the display width
4474 allows. Grow the allocation, but only so that it's
4475 double the current requirements. If the display is
4476 extremely wide, this avoids allocating a lot of memory
4477 that is never needed. */
4478 column_info
= xnrealloc (column_info
, max_cols
,
4479 2 * sizeof *column_info
);
4480 new_column_info_alloc
= 2 * max_cols
;
4484 column_info
= xnrealloc (column_info
, max_idx
, sizeof *column_info
);
4485 new_column_info_alloc
= max_idx
;
4488 /* Allocate the new size_t objects by computing the triangle
4489 formula n * (n + 1) / 2, except that we don't need to
4490 allocate the part of the triangle that we've already
4491 allocated. Check for address arithmetic overflow. */
4493 size_t column_info_growth
= new_column_info_alloc
- column_info_alloc
;
4494 size_t s
= column_info_alloc
+ 1 + new_column_info_alloc
;
4495 size_t t
= s
* column_info_growth
;
4496 if (s
< new_column_info_alloc
|| t
/ column_info_growth
!= s
)
4498 p
= xnmalloc (t
/ 2, sizeof *p
);
4501 /* Grow the triangle by parceling out the cells just allocated. */
4502 for (i
= column_info_alloc
; i
< new_column_info_alloc
; i
++)
4504 column_info
[i
].col_arr
= p
;
4508 column_info_alloc
= new_column_info_alloc
;
4511 for (i
= 0; i
< max_cols
; ++i
)
4515 column_info
[i
].valid_len
= true;
4516 column_info
[i
].line_len
= (i
+ 1) * MIN_COLUMN_WIDTH
;
4517 for (j
= 0; j
<= i
; ++j
)
4518 column_info
[i
].col_arr
[j
] = MIN_COLUMN_WIDTH
;
4522 /* Calculate the number of columns needed to represent the current set
4523 of files in the current display width. */
4526 calculate_columns (bool by_columns
)
4528 size_t filesno
; /* Index into cwd_file. */
4529 size_t cols
; /* Number of files across. */
4531 /* Normally the maximum number of columns is determined by the
4532 screen width. But if few files are available this might limit it
4534 size_t max_cols
= MIN (max_idx
, cwd_n_used
);
4536 init_column_info ();
4538 /* Compute the maximum number of possible columns. */
4539 for (filesno
= 0; filesno
< cwd_n_used
; ++filesno
)
4541 struct fileinfo
const *f
= sorted_file
[filesno
];
4542 size_t name_length
= length_of_file_name_and_frills (f
);
4545 for (i
= 0; i
< max_cols
; ++i
)
4547 if (column_info
[i
].valid_len
)
4549 size_t idx
= (by_columns
4550 ? filesno
/ ((cwd_n_used
+ i
) / (i
+ 1))
4551 : filesno
% (i
+ 1));
4552 size_t real_length
= name_length
+ (idx
== i
? 0 : 2);
4554 if (column_info
[i
].col_arr
[idx
] < real_length
)
4556 column_info
[i
].line_len
+= (real_length
4557 - column_info
[i
].col_arr
[idx
]);
4558 column_info
[i
].col_arr
[idx
] = real_length
;
4559 column_info
[i
].valid_len
= (column_info
[i
].line_len
4566 /* Find maximum allowed columns. */
4567 for (cols
= max_cols
; 1 < cols
; --cols
)
4569 if (column_info
[cols
- 1].valid_len
)
4579 if (status
!= EXIT_SUCCESS
)
4580 fprintf (stderr
, _("Try `%s --help' for more information.\n"),
4584 printf (_("Usage: %s [OPTION]... [FILE]...\n"), program_name
);
4586 List information about the FILEs (the current directory by default).\n\
4587 Sort entries alphabetically if none of -cftuvSUX nor --sort.\n\
4591 Mandatory arguments to long options are mandatory for short options too.\n\
4594 -a, --all do not ignore entries starting with .\n\
4595 -A, --almost-all do not list implied . and ..\n\
4596 --author with -l, print the author of each file\n\
4597 -b, --escape print C-style escapes for nongraphic characters\n\
4600 --block-size=SIZE use SIZE-byte blocks. See SIZE format below\n\
4601 -B, --ignore-backups do not list implied entries ending with ~\n\
4602 -c with -lt: sort by, and show, ctime (time of last\n\
4603 modification of file status information)\n\
4604 with -l: show ctime and sort by name\n\
4605 otherwise: sort by ctime\n\
4608 -C list entries by columns\n\
4609 --color[=WHEN] colorize the output. WHEN defaults to `always'\n\
4610 or can be `never' or `auto'. More info below\n\
4611 -d, --directory list directory entries instead of contents,\n\
4612 and do not dereference symbolic links\n\
4613 -D, --dired generate output designed for Emacs' dired mode\n\
4616 -f do not sort, enable -aU, disable -ls --color\n\
4617 -F, --classify append indicator (one of */=>@|) to entries\n\
4618 --file-type likewise, except do not append `*'\n\
4619 --format=WORD across -x, commas -m, horizontal -x, long -l,\n\
4620 single-column -1, verbose -l, vertical -C\n\
4621 --full-time like -l --time-style=full-iso\n\
4624 -g like -l, but do not list owner\n\
4627 --group-directories-first\n\
4628 group directories before files.\n\
4629 augment with a --sort option, but any\n\
4630 use of --sort=none (-U) disables grouping\n\
4633 -G, --no-group in a long listing, don't print group names\n\
4634 -h, --human-readable with -l, print sizes in human readable format\n\
4635 (e.g., 1K 234M 2G)\n\
4636 --si likewise, but use powers of 1000 not 1024\n\
4639 -H, --dereference-command-line\n\
4640 follow symbolic links listed on the command line\n\
4641 --dereference-command-line-symlink-to-dir\n\
4642 follow each command line symbolic link\n\
4643 that points to a directory\n\
4644 --hide=PATTERN do not list implied entries matching shell PATTERN\n\
4645 (overridden by -a or -A)\n\
4648 --indicator-style=WORD append indicator with style WORD to entry names:\n\
4649 none (default), slash (-p),\n\
4650 file-type (--file-type), classify (-F)\n\
4651 -i, --inode print the index number of each file\n\
4652 -I, --ignore=PATTERN do not list implied entries matching shell PATTERN\n\
4653 -k like --block-size=1K\n\
4656 -l use a long listing format\n\
4657 -L, --dereference when showing file information for a symbolic\n\
4658 link, show information for the file the link\n\
4659 references rather than for the link itself\n\
4660 -m fill width with a comma separated list of entries\n\
4663 -n, --numeric-uid-gid like -l, but list numeric user and group IDs\n\
4664 -N, --literal print raw entry names (don't treat e.g. control\n\
4665 characters specially)\n\
4666 -o like -l, but do not list group information\n\
4667 -p, --indicator-style=slash\n\
4668 append / indicator to directories\n\
4671 -q, --hide-control-chars print ? instead of non graphic characters\n\
4672 --show-control-chars show non graphic characters as-is (default\n\
4673 unless program is `ls' and output is a terminal)\n\
4674 -Q, --quote-name enclose entry names in double quotes\n\
4675 --quoting-style=WORD use quoting style WORD for entry names:\n\
4676 literal, locale, shell, shell-always, c, escape\n\
4679 -r, --reverse reverse order while sorting\n\
4680 -R, --recursive list subdirectories recursively\n\
4681 -s, --size print the allocated size of each file, in blocks\n\
4684 -S sort by file size\n\
4685 --sort=WORD sort by WORD instead of name: none -U,\n\
4686 extension -X, size -S, time -t, version -v\n\
4687 --time=WORD with -l, show time as WORD instead of modification\n\
4688 time: atime -u, access -u, use -u, ctime -c,\n\
4689 or status -c; use specified time as sort key\n\
4693 --time-style=STYLE with -l, show times using style STYLE:\n\
4694 full-iso, long-iso, iso, locale, +FORMAT.\n\
4695 FORMAT is interpreted like `date'; if FORMAT is\n\
4696 FORMAT1<newline>FORMAT2, FORMAT1 applies to\n\
4697 non-recent files and FORMAT2 to recent files;\n\
4698 if STYLE is prefixed with `posix-', STYLE\n\
4699 takes effect only outside the POSIX locale\n\
4702 -t sort by modification time\n\
4703 -T, --tabsize=COLS assume tab stops at each COLS instead of 8\n\
4706 -u with -lt: sort by, and show, access time\n\
4707 with -l: show access time and sort by name\n\
4708 otherwise: sort by access time\n\
4709 -U do not sort; list entries in directory order\n\
4710 -v natural sort of (version) numbers within text\n\
4713 -w, --width=COLS assume screen width instead of current value\n\
4714 -x list entries by lines instead of by columns\n\
4715 -X sort alphabetically by entry extension\n\
4716 -Z, --context print any SELinux security context of each file\n\
4717 -1 list one file per line\n\
4719 fputs (HELP_OPTION_DESCRIPTION
, stdout
);
4720 fputs (VERSION_OPTION_DESCRIPTION
, stdout
);
4724 Using color to distinguish file types is disabled both by default and\n\
4725 with --color=never. With --color=auto, ls emits color codes only when\n\
4726 standard output is connected to a terminal. The LS_COLORS environment\n\
4727 variable can change the settings. Use the dircolors command to set it.\n\
4733 1 if minor problems (e.g., cannot access subdirectory),\n\
4734 2 if serious trouble (e.g., cannot access command-line argument).\n\
4736 emit_ancillary_info ();