1 /* du -- summarize disk usage
2 Copyright (C) 1988-1991, 1995-2010 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Differences from the Unix du:
18 * Doesn't simply ignore the names of regular files given as arguments
21 By tege@sics.se, Torbjorn Granlund,
22 and djm@ai.mit.edu, David MacKenzie.
23 Variable blocks added by lm@sgi.com and eggert@twinsun.com.
24 Rewritten to use nftw, then to use fts by Jim Meyering. */
28 #include <sys/types.h>
32 #include "argv-iter.h"
35 #include "fprintftime.h"
41 #include "stat-time.h"
46 extern bool fts_debug
;
48 /* The official name of this program (e.g., no `g' prefix). */
49 #define PROGRAM_NAME "du"
52 proper_name_utf8 ("Torbjorn Granlund", "Torbj\303\266rn Granlund"), \
53 proper_name ("David MacKenzie"), \
54 proper_name ("Paul Eggert"), \
55 proper_name ("Jim Meyering")
58 # define FTS_CROSS_CHECK(Fts) fts_cross_check (Fts)
59 # define DEBUG_OPT "d"
61 # define FTS_CROSS_CHECK(Fts)
65 /* Initial size of the hash table. */
66 #define INITIAL_TABLE_SIZE 103
68 /* Hash structure for inode and device numbers. The separate entry
69 structure makes it easier to rehash "in place". */
76 /* A set of dev/ino pairs. */
77 static Hash_table
*htab
;
79 /* Define a class for collecting directory information. */
83 /* Size of files in directory. */
86 /* Latest time stamp found. If tmax.tv_sec == TYPE_MINIMUM (time_t)
87 && tmax.tv_nsec < 0, no time stamp has been found. */
91 /* Initialize directory data. */
93 duinfo_init (struct duinfo
*a
)
96 a
->tmax
.tv_sec
= TYPE_MINIMUM (time_t);
100 /* Set directory data. */
102 duinfo_set (struct duinfo
*a
, uintmax_t size
, struct timespec tmax
)
108 /* Accumulate directory data. */
110 duinfo_add (struct duinfo
*a
, struct duinfo
const *b
)
113 if (timespec_cmp (a
->tmax
, b
->tmax
) < 0)
117 /* A structure for per-directory level information. */
120 /* Entries in this directory. */
123 /* Total for subdirectories. */
124 struct duinfo subdir
;
127 /* If true, display counts for all files, not just directories. */
128 static bool opt_all
= false;
130 /* If true, rather than using the disk usage of each file,
131 use the apparent size (a la stat.st_size). */
132 static bool apparent_size
= false;
134 /* If true, count each hard link of files with multiple links. */
135 static bool opt_count_all
= false;
137 /* If true, output the NUL byte instead of a newline at the end of each line. */
138 static bool opt_nul_terminate_output
= false;
140 /* If true, print a grand total at the end. */
141 static bool print_grand_total
= false;
143 /* If nonzero, do not add sizes of subdirectories. */
144 static bool opt_separate_dirs
= false;
146 /* Show the total for each directory (and file if --all) that is at
147 most MAX_DEPTH levels down from the root of the hierarchy. The root
148 is at level 0, so `du --max-depth=0' is equivalent to `du -s'. */
149 static size_t max_depth
= SIZE_MAX
;
151 /* Human-readable options for output. */
152 static int human_output_opts
;
154 /* If true, print most recently modified date, using the specified format. */
155 static bool opt_time
= false;
157 /* Type of time to display. controlled by --time. */
161 time_mtime
, /* default */
166 static enum time_type time_type
= time_mtime
;
168 /* User specified date / time style */
169 static char const *time_style
= NULL
;
171 /* Format used to display date / time. Controlled by --time-style */
172 static char const *time_format
= NULL
;
174 /* The units to use when printing sizes. */
175 static uintmax_t output_block_size
;
177 /* File name patterns to exclude. */
178 static struct exclude
*exclude
;
180 /* Grand total size of all args, in bytes. Also latest modified date. */
181 static struct duinfo tot_dui
;
183 #define IS_DIR_TYPE(Type) \
185 || (Type) == FTS_DNR)
187 /* For long options that have no equivalent short option, use a
188 non-character as a pseudo short option, starting with CHAR_MAX + 1. */
191 APPARENT_SIZE_OPTION
= CHAR_MAX
+ 1,
200 static struct option
const long_options
[] =
202 {"all", no_argument
, NULL
, 'a'},
203 {"apparent-size", no_argument
, NULL
, APPARENT_SIZE_OPTION
},
204 {"block-size", required_argument
, NULL
, 'B'},
205 {"bytes", no_argument
, NULL
, 'b'},
206 {"count-links", no_argument
, NULL
, 'l'},
207 {"dereference", no_argument
, NULL
, 'L'},
208 {"dereference-args", no_argument
, NULL
, 'D'},
209 {"exclude", required_argument
, NULL
, EXCLUDE_OPTION
},
210 {"exclude-from", required_argument
, NULL
, 'X'},
211 {"files0-from", required_argument
, NULL
, FILES0_FROM_OPTION
},
212 {"human-readable", no_argument
, NULL
, 'h'},
213 {"si", no_argument
, NULL
, HUMAN_SI_OPTION
},
214 {"max-depth", required_argument
, NULL
, MAX_DEPTH_OPTION
},
215 {"null", no_argument
, NULL
, '0'},
216 {"no-dereference", no_argument
, NULL
, 'P'},
217 {"one-file-system", no_argument
, NULL
, 'x'},
218 {"separate-dirs", no_argument
, NULL
, 'S'},
219 {"summarize", no_argument
, NULL
, 's'},
220 {"total", no_argument
, NULL
, 'c'},
221 {"time", optional_argument
, NULL
, TIME_OPTION
},
222 {"time-style", required_argument
, NULL
, TIME_STYLE_OPTION
},
223 {GETOPT_HELP_OPTION_DECL
},
224 {GETOPT_VERSION_OPTION_DECL
},
228 static char const *const time_args
[] =
230 "atime", "access", "use", "ctime", "status", NULL
232 static enum time_type
const time_types
[] =
234 time_atime
, time_atime
, time_atime
, time_ctime
, time_ctime
236 ARGMATCH_VERIFY (time_args
, time_types
);
238 /* `full-iso' uses full ISO-style dates and times. `long-iso' uses longer
239 ISO-style time stamps, though shorter than `full-iso'. `iso' uses shorter
240 ISO-style time stamps. */
243 full_iso_time_style
, /* --time-style=full-iso */
244 long_iso_time_style
, /* --time-style=long-iso */
245 iso_time_style
/* --time-style=iso */
248 static char const *const time_style_args
[] =
250 "full-iso", "long-iso", "iso", NULL
252 static enum time_style
const time_style_types
[] =
254 full_iso_time_style
, long_iso_time_style
, iso_time_style
256 ARGMATCH_VERIFY (time_style_args
, time_style_types
);
261 if (status
!= EXIT_SUCCESS
)
262 fprintf (stderr
, _("Try `%s --help' for more information.\n"),
267 Usage: %s [OPTION]... [FILE]...\n\
268 or: %s [OPTION]... --files0-from=F\n\
269 "), program_name
, program_name
);
271 Summarize disk usage of each FILE, recursively for directories.\n\
275 Mandatory arguments to long options are mandatory for short options too.\n\
278 -a, --all write counts for all files, not just directories\n\
279 --apparent-size print apparent sizes, rather than disk usage; although\n\
280 the apparent size is usually smaller, it may be\n\
281 larger due to holes in (`sparse') files, internal\n\
282 fragmentation, indirect blocks, and the like\n\
285 -B, --block-size=SIZE use SIZE-byte blocks\n\
286 -b, --bytes equivalent to `--apparent-size --block-size=1'\n\
287 -c, --total produce a grand total\n\
288 -D, --dereference-args dereference only symlinks that are listed on the\n\
292 --files0-from=F summarize disk usage of the NUL-terminated file\n\
293 names specified in file F;\n\
294 If F is - then read names from standard input\n\
295 -H equivalent to --dereference-args (-D)\n\
296 -h, --human-readable print sizes in human readable format (e.g., 1K 234M 2G)\n\
297 --si like -h, but use powers of 1000 not 1024\n\
300 -k like --block-size=1K\n\
301 -l, --count-links count sizes many times if hard linked\n\
302 -m like --block-size=1M\n\
305 -L, --dereference dereference all symbolic links\n\
306 -P, --no-dereference don't follow any symbolic links (this is the default)\n\
307 -0, --null end each output line with 0 byte rather than newline\n\
308 -S, --separate-dirs do not include size of subdirectories\n\
309 -s, --summarize display only a total for each argument\n\
312 -x, --one-file-system skip directories on different file systems\n\
313 -X, --exclude-from=FILE exclude files that match any pattern in FILE\n\
314 --exclude=PATTERN exclude files that match PATTERN\n\
315 --max-depth=N print the total for a directory (or file, with --all)\n\
316 only if it is N or fewer levels below the command\n\
317 line argument; --max-depth=0 is the same as\n\
321 --time show time of the last modification of any file in the\n\
322 directory, or any of its subdirectories\n\
323 --time=WORD show time as WORD instead of modification time:\n\
324 atime, access, use, ctime or status\n\
325 --time-style=STYLE show times using style STYLE:\n\
326 full-iso, long-iso, iso, +FORMAT\n\
327 FORMAT is interpreted like `date'\n\
329 fputs (HELP_OPTION_DESCRIPTION
, stdout
);
330 fputs (VERSION_OPTION_DESCRIPTION
, stdout
);
331 emit_blocksize_note ("DU");
333 emit_ancillary_info ();
339 entry_hash (void const *x
, size_t table_size
)
341 struct entry
const *p
= x
;
343 /* Ignoring the device number here should be fine. */
344 /* The cast to uintmax_t prevents negative remainders
345 if st_ino is negative. */
346 return (uintmax_t) p
->st_ino
% table_size
;
349 /* Compare two dev/ino pairs. Return true if they are the same. */
351 entry_compare (void const *x
, void const *y
)
353 struct entry
const *a
= x
;
354 struct entry
const *b
= y
;
355 return SAME_INODE (*a
, *b
) ? true : false;
358 /* Try to insert the INO/DEV pair into the global table, HTAB.
359 Return true if the pair is successfully inserted,
360 false if the pair is already in the table. */
362 hash_ins (ino_t ino
, dev_t dev
)
365 struct entry
*ent_from_table
;
367 ent
= xmalloc (sizeof *ent
);
371 ent_from_table
= hash_insert (htab
, ent
);
372 if (ent_from_table
== NULL
)
374 /* Insertion failed due to lack of memory. */
378 if (ent_from_table
== ent
)
380 /* Insertion succeeded. */
384 /* That pair is already in the table, so ENT was not inserted. Free it. */
390 /* Initialize the hash table. */
394 htab
= hash_initialize (INITIAL_TABLE_SIZE
, NULL
,
395 entry_hash
, entry_compare
, free
);
400 /* FIXME: this code is nearly identical to code in date.c */
401 /* Display the date and time in WHEN according to the format specified
405 show_date (const char *format
, struct timespec when
)
407 struct tm
*tm
= localtime (&when
.tv_sec
);
410 char buf
[INT_BUFSIZE_BOUND (intmax_t)];
411 error (0, 0, _("time %s is out of range"), timetostr (when
.tv_sec
, buf
));
416 fprintftime (stdout
, format
, tm
, 0, when
.tv_nsec
);
419 /* Print N_BYTES. Convert it to a readable value before printing. */
422 print_only_size (uintmax_t n_bytes
)
424 char buf
[LONGEST_HUMAN_READABLE
+ 1];
425 fputs (human_readable (n_bytes
, buf
, human_output_opts
,
426 1, output_block_size
), stdout
);
429 /* Print size (and optionally time) indicated by *PDUI, followed by STRING. */
432 print_size (const struct duinfo
*pdui
, const char *string
)
434 print_only_size (pdui
->size
);
438 show_date (time_format
, pdui
->tmax
);
440 printf ("\t%s%c", string
, opt_nul_terminate_output
? '\0' : '\n');
444 /* This function is called once for every file system object that fts
445 encounters. fts does a depth-first traversal. This function knows
446 that and accumulates per-directory totals based on changes in
447 the depth of the current entry. It returns true on success. */
450 process_file (FTS
*fts
, FTSENT
*ent
)
454 struct duinfo dui_to_print
;
456 static size_t prev_level
;
457 static size_t n_alloc
;
458 /* First element of the structure contains:
459 The sum of the st_size values of all entries in the single directory
460 at the corresponding level. Although this does include the st_size
461 corresponding to each subdirectory, it does not include the size of
462 any file in a subdirectory. Also corresponding last modified date.
463 Second element of the structure contains:
464 The sum of the sizes of all entries in the hierarchy at or below the
465 directory at the specified level. */
466 static struct dulevel
*dulvl
;
469 const char *file
= ent
->fts_path
;
470 const struct stat
*sb
= ent
->fts_statp
;
473 /* If necessary, set FTS_SKIP before returning. */
474 skip
= excluded_file_name (exclude
, file
);
476 fts_set (fts
, ent
, FTS_SKIP
);
478 switch (ent
->fts_info
)
481 error (0, ent
->fts_errno
, _("cannot access %s"), quote (file
));
485 /* if (S_ISDIR (ent->fts_statp->st_mode) && FIXME */
486 error (0, ent
->fts_errno
, _("%s"), quote (file
));
490 /* Don't return just yet, since although the directory is not readable,
491 we were able to stat it, so we do have a size. */
492 error (0, ent
->fts_errno
, _("cannot read directory %s"), quote (file
));
496 case FTS_DC
: /* directory that causes cycles */
497 if (cycle_warning_required (fts
, ent
))
499 emit_cycle_warning (file
);
510 /* If this is the first (pre-order) encounter with a directory,
511 or if it's the second encounter for a skipped directory, then
512 return right away. */
513 if (ent
->fts_info
== FTS_D
|| skip
)
516 /* If the file is being excluded or if it has already been counted
517 via a hard link, then don't let it contribute to the sums. */
520 && ! S_ISDIR (sb
->st_mode
)
522 && ! hash_ins (sb
->st_ino
, sb
->st_dev
)))
524 /* Note that we must not simply return here.
525 We still have to update prev_level and maybe propagate
526 some sums up the hierarchy. */
535 : (uintmax_t) ST_NBLOCKS (*sb
) * ST_NBLOCKSIZE
),
536 (time_type
== time_mtime
? get_stat_mtime (sb
)
537 : time_type
== time_atime
? get_stat_atime (sb
)
538 : get_stat_ctime (sb
)));
541 level
= ent
->fts_level
;
546 n_alloc
= level
+ 10;
547 dulvl
= xcalloc (n_alloc
, sizeof *dulvl
);
551 if (level
== prev_level
)
553 /* This is usually the most common case. Do nothing. */
555 else if (level
> prev_level
)
557 /* Descending the hierarchy.
558 Clear the accumulators for *all* levels between prev_level
559 and the current one. The depth may change dramatically,
560 e.g., from 1 to 10. */
563 if (n_alloc
<= level
)
565 dulvl
= xnrealloc (dulvl
, level
, 2 * sizeof *dulvl
);
569 for (i
= prev_level
+ 1; i
<= level
; i
++)
571 duinfo_init (&dulvl
[i
].ent
);
572 duinfo_init (&dulvl
[i
].subdir
);
575 else /* level < prev_level */
577 /* Ascending the hierarchy.
578 Process a directory only after all entries in that
579 directory have been processed. When the depth decreases,
580 propagate sums from the children (prev_level) to the parent.
581 Here, the current level is always one smaller than the
583 assert (level
== prev_level
- 1);
584 duinfo_add (&dui_to_print
, &dulvl
[prev_level
].ent
);
585 if (!opt_separate_dirs
)
586 duinfo_add (&dui_to_print
, &dulvl
[prev_level
].subdir
);
587 duinfo_add (&dulvl
[level
].subdir
, &dulvl
[prev_level
].ent
);
588 duinfo_add (&dulvl
[level
].subdir
, &dulvl
[prev_level
].subdir
);
594 /* Let the size of a directory entry contribute to the total for the
595 containing directory, unless --separate-dirs (-S) is specified. */
596 if ( ! (opt_separate_dirs
&& IS_DIR_TYPE (ent
->fts_info
)))
597 duinfo_add (&dulvl
[level
].ent
, &dui
);
599 /* Even if this directory is unreadable or we can't chdir into it,
600 do let its size contribute to the total. */
601 duinfo_add (&tot_dui
, &dui
);
603 /* If we're not counting an entry, e.g., because it's a hard link
604 to a file we've already counted (and --count-links), then don't
605 print a line for it. */
609 if ((IS_DIR_TYPE (ent
->fts_info
) && level
<= max_depth
)
610 || ((opt_all
&& level
<= max_depth
) || level
== 0))
611 print_size (&dui_to_print
, file
);
616 /* Recursively print the sizes of the directories (and, if selected, files)
617 named in FILES, the last entry of which is NULL.
618 BIT_FLAGS controls how fts works.
619 Return true if successful. */
622 du_files (char **files
, int bit_flags
)
628 FTS
*fts
= xfts_open (files
, bit_flags
, NULL
);
634 ent
= fts_read (fts
);
639 /* FIXME: try to give a better message */
640 error (0, errno
, _("fts_read failed"));
645 FTS_CROSS_CHECK (fts
);
647 ok
&= process_file (fts
, ent
);
650 if (fts_close (fts
) != 0)
652 error (0, errno
, _("fts_close failed"));
661 main (int argc
, char **argv
)
664 bool max_depth_specified
= false;
666 char *files_from
= NULL
;
668 /* Bit flags that control how fts works. */
669 int bit_flags
= FTS_TIGHT_CYCLE_CHECK
| FTS_DEFER_STAT
;
671 /* Select one of the three FTS_ options that control if/when
672 to follow a symlink. */
673 int symlink_deref_bits
= FTS_PHYSICAL
;
675 /* If true, display only a total for each argument. */
676 bool opt_summarize_only
= false;
678 cwd_only
[0] = bad_cast (".");
681 initialize_main (&argc
, &argv
);
682 set_program_name (argv
[0]);
683 setlocale (LC_ALL
, "");
684 bindtextdomain (PACKAGE
, LOCALEDIR
);
685 textdomain (PACKAGE
);
687 atexit (close_stdout
);
689 exclude
= new_exclude ();
691 human_options (getenv ("DU_BLOCK_SIZE"),
692 &human_output_opts
, &output_block_size
);
697 int c
= getopt_long (argc
, argv
, DEBUG_OPT
"0abchHklmsxB:DLPSX:",
711 opt_nul_terminate_output
= true;
718 case APPARENT_SIZE_OPTION
:
719 apparent_size
= true;
723 apparent_size
= true;
724 human_output_opts
= 0;
725 output_block_size
= 1;
729 print_grand_total
= true;
733 human_output_opts
= human_autoscale
| human_SI
| human_base_1024
;
734 output_block_size
= 1;
737 case HUMAN_SI_OPTION
:
738 human_output_opts
= human_autoscale
| human_SI
;
739 output_block_size
= 1;
743 human_output_opts
= 0;
744 output_block_size
= 1024;
747 case MAX_DEPTH_OPTION
: /* --max-depth=N */
749 unsigned long int tmp_ulong
;
750 if (xstrtoul (optarg
, NULL
, 0, &tmp_ulong
, NULL
) == LONGINT_OK
751 && tmp_ulong
<= SIZE_MAX
)
753 max_depth_specified
= true;
754 max_depth
= tmp_ulong
;
758 error (0, 0, _("invalid maximum depth %s"),
766 human_output_opts
= 0;
767 output_block_size
= 1024 * 1024;
771 opt_count_all
= true;
775 opt_summarize_only
= true;
779 bit_flags
|= FTS_XDEV
;
784 enum strtol_error e
= human_options (optarg
, &human_output_opts
,
787 xstrtol_fatal (e
, oi
, c
, long_options
, optarg
);
791 case 'H': /* NOTE: before 2008-12, -H was equivalent to --si. */
793 symlink_deref_bits
= FTS_COMFOLLOW
| FTS_PHYSICAL
;
796 case 'L': /* --dereference */
797 symlink_deref_bits
= FTS_LOGICAL
;
800 case 'P': /* --no-dereference */
801 symlink_deref_bits
= FTS_PHYSICAL
;
805 opt_separate_dirs
= true;
809 if (add_exclude_file (add_exclude
, exclude
, optarg
,
810 EXCLUDE_WILDCARDS
, '\n'))
812 error (0, errno
, "%s", quotearg_colon (optarg
));
817 case FILES0_FROM_OPTION
:
822 add_exclude (exclude
, optarg
, EXCLUDE_WILDCARDS
);
829 ? XARGMATCH ("--time", optarg
, time_args
, time_types
)
833 case TIME_STYLE_OPTION
:
837 case_GETOPT_HELP_CHAR
;
839 case_GETOPT_VERSION_CHAR (PROGRAM_NAME
, AUTHORS
);
847 usage (EXIT_FAILURE
);
849 if (opt_all
&& opt_summarize_only
)
851 error (0, 0, _("cannot both summarize and show all entries"));
852 usage (EXIT_FAILURE
);
855 if (opt_summarize_only
&& max_depth_specified
&& max_depth
== 0)
858 _("warning: summarizing is the same as using --max-depth=0"));
861 if (opt_summarize_only
&& max_depth_specified
&& max_depth
!= 0)
863 unsigned long int d
= max_depth
;
864 error (0, 0, _("warning: summarizing conflicts with --max-depth=%lu"), d
);
865 usage (EXIT_FAILURE
);
868 if (opt_summarize_only
)
871 /* Process time style if printing last times. */
876 time_style
= getenv ("TIME_STYLE");
878 /* Ignore TIMESTYLE="locale", for compatibility with ls. */
879 if (! time_style
|| STREQ (time_style
, "locale"))
880 time_style
= "long-iso";
881 else if (*time_style
== '+')
883 /* Ignore anything after a newline, for compatibility
885 char *p
= strchr (time_style
, '\n');
891 /* Ignore "posix-" prefix, for compatibility with ls. */
892 static char const posix_prefix
[] = "posix-";
893 while (strncmp (time_style
, posix_prefix
, sizeof posix_prefix
- 1)
895 time_style
+= sizeof posix_prefix
- 1;
899 if (*time_style
== '+')
900 time_format
= time_style
+ 1;
903 switch (XARGMATCH ("time style", time_style
,
904 time_style_args
, time_style_types
))
906 case full_iso_time_style
:
907 time_format
= "%Y-%m-%d %H:%M:%S.%N %z";
910 case long_iso_time_style
:
911 time_format
= "%Y-%m-%d %H:%M";
915 time_format
= "%Y-%m-%d";
921 struct argv_iterator
*ai
;
924 /* When using --files0-from=F, you may not specify any files
925 on the command-line. */
928 error (0, 0, _("extra operand %s"), quote (argv
[optind
]));
929 fprintf (stderr
, "%s\n",
930 _("file operands cannot be combined with --files0-from"));
931 usage (EXIT_FAILURE
);
934 if (! (STREQ (files_from
, "-") || freopen (files_from
, "r", stdin
)))
935 error (EXIT_FAILURE
, errno
, _("cannot open %s for reading"),
938 ai
= argv_iter_init_stream (stdin
);
942 char **files
= (optind
< argc
? argv
+ optind
: cwd_only
);
943 ai
= argv_iter_init_argv (files
);
949 /* Initialize the hash structure for inode numbers. */
952 bit_flags
|= symlink_deref_bits
;
953 static char *temp_argv
[] = { NULL
, NULL
};
957 bool skip_file
= false;
958 enum argv_iter_err ai_err
;
959 char *file_name
= argv_iter (ai
, &ai_err
);
960 if (ai_err
== AI_ERR_EOF
)
967 error (0, errno
, _("%s: read error"), quote (files_from
));
974 assert (!"unexpected error code from argv_iter");
977 if (files_from
&& STREQ (files_from
, "-") && STREQ (file_name
, "-"))
979 /* Give a better diagnostic in an unusual case:
980 printf - | du --files0-from=- */
981 error (0, 0, _("when reading file names from stdin, "
982 "no file name of %s allowed"),
987 /* Report and skip any empty file names before invoking fts.
988 This works around a glitch in fts, which fails immediately
989 (without looking at the other file names) when given an empty
993 /* Diagnose a zero-length file name. When it's one
994 among many, knowing the record number may help.
995 FIXME: currently print the record number only with
996 --files0-from=FILE. Maybe do it for argv, too? */
997 if (files_from
== NULL
)
998 error (0, 0, "%s", _("invalid zero-length file name"));
1001 /* Using the standard `filename:line-number:' prefix here is
1002 not totally appropriate, since NUL is the separator, not NL,
1003 but it might be better than nothing. */
1004 unsigned long int file_number
= argv_iter_n_args (ai
);
1005 error (0, 0, "%s:%lu: %s", quotearg_colon (files_from
),
1006 file_number
, _("invalid zero-length file name"));
1015 temp_argv
[0] = file_name
;
1016 ok
&= du_files (temp_argv
, bit_flags
);
1020 argv_iter_free (ai
);
1022 if (files_from
&& (ferror (stdin
) || fclose (stdin
) != 0))
1023 error (EXIT_FAILURE
, 0, _("error reading %s"), quote (files_from
));
1025 if (print_grand_total
)
1026 print_size (&tot_dui
, _("total"));
1030 exit (ok
? EXIT_SUCCESS
: EXIT_FAILURE
);