1 /* du -- summarize disk usage
2 Copyright (C) 1988-1991, 1995-2012 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"
36 #include "fprintftime.h"
40 #include "stat-size.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)
60 # define FTS_CROSS_CHECK(Fts)
63 /* A set of dev/ino pairs. */
64 static struct di_set
*di_set
;
66 /* Keep track of the preceding "level" (depth in hierarchy)
67 from one call of process_file to the next. */
68 static size_t prev_level
;
70 /* Define a class for collecting directory information. */
73 /* Size of files in directory. */
76 /* Latest time stamp found. If tmax.tv_sec == TYPE_MINIMUM (time_t)
77 && tmax.tv_nsec < 0, no time stamp has been found. */
81 /* Initialize directory data. */
83 duinfo_init (struct duinfo
*a
)
86 a
->tmax
.tv_sec
= TYPE_MINIMUM (time_t);
90 /* Set directory data. */
92 duinfo_set (struct duinfo
*a
, uintmax_t size
, struct timespec tmax
)
98 /* Accumulate directory data. */
100 duinfo_add (struct duinfo
*a
, struct duinfo
const *b
)
103 if (timespec_cmp (a
->tmax
, b
->tmax
) < 0)
107 /* A structure for per-directory level information. */
110 /* Entries in this directory. */
113 /* Total for subdirectories. */
114 struct duinfo subdir
;
117 /* If true, display counts for all files, not just directories. */
118 static bool opt_all
= false;
120 /* If true, rather than using the disk usage of each file,
121 use the apparent size (a la stat.st_size). */
122 static bool apparent_size
= false;
124 /* If true, count each hard link of files with multiple links. */
125 static bool opt_count_all
= false;
127 /* If true, hash all files to look for hard links. */
128 static bool hash_all
;
130 /* If true, output the NUL byte instead of a newline at the end of each line. */
131 static bool opt_nul_terminate_output
= false;
133 /* If true, print a grand total at the end. */
134 static bool print_grand_total
= false;
136 /* If nonzero, do not add sizes of subdirectories. */
137 static bool opt_separate_dirs
= false;
139 /* Show the total for each directory (and file if --all) that is at
140 most MAX_DEPTH levels down from the root of the hierarchy. The root
141 is at level 0, so `du --max-depth=0' is equivalent to `du -s'. */
142 static size_t max_depth
= SIZE_MAX
;
144 /* Human-readable options for output. */
145 static int human_output_opts
;
147 /* If true, print most recently modified date, using the specified format. */
148 static bool opt_time
= false;
150 /* Type of time to display. controlled by --time. */
154 time_mtime
, /* default */
159 static enum time_type time_type
= time_mtime
;
161 /* User specified date / time style */
162 static char const *time_style
= NULL
;
164 /* Format used to display date / time. Controlled by --time-style */
165 static char const *time_format
= NULL
;
167 /* The units to use when printing sizes. */
168 static uintmax_t output_block_size
;
170 /* File name patterns to exclude. */
171 static struct exclude
*exclude
;
173 /* Grand total size of all args, in bytes. Also latest modified date. */
174 static struct duinfo tot_dui
;
176 #define IS_DIR_TYPE(Type) \
178 || (Type) == FTS_DNR)
180 /* For long options that have no equivalent short option, use a
181 non-character as a pseudo short option, starting with CHAR_MAX + 1. */
184 APPARENT_SIZE_OPTION
= CHAR_MAX
+ 1,
193 static struct option
const long_options
[] =
195 {"all", no_argument
, NULL
, 'a'},
196 {"apparent-size", no_argument
, NULL
, APPARENT_SIZE_OPTION
},
197 {"block-size", required_argument
, NULL
, 'B'},
198 {"bytes", no_argument
, NULL
, 'b'},
199 {"count-links", no_argument
, NULL
, 'l'},
200 /* {"-debug", no_argument, NULL, FTS_DEBUG}, */
201 {"dereference", no_argument
, NULL
, 'L'},
202 {"dereference-args", no_argument
, NULL
, 'D'},
203 {"exclude", required_argument
, NULL
, EXCLUDE_OPTION
},
204 {"exclude-from", required_argument
, NULL
, 'X'},
205 {"files0-from", required_argument
, NULL
, FILES0_FROM_OPTION
},
206 {"human-readable", no_argument
, NULL
, 'h'},
207 {"si", no_argument
, NULL
, HUMAN_SI_OPTION
},
208 {"max-depth", required_argument
, NULL
, 'd'},
209 {"null", no_argument
, NULL
, '0'},
210 {"no-dereference", no_argument
, NULL
, 'P'},
211 {"one-file-system", no_argument
, NULL
, 'x'},
212 {"separate-dirs", no_argument
, NULL
, 'S'},
213 {"summarize", no_argument
, NULL
, 's'},
214 {"total", no_argument
, NULL
, 'c'},
215 {"time", optional_argument
, NULL
, TIME_OPTION
},
216 {"time-style", required_argument
, NULL
, TIME_STYLE_OPTION
},
217 {GETOPT_HELP_OPTION_DECL
},
218 {GETOPT_VERSION_OPTION_DECL
},
222 static char const *const time_args
[] =
224 "atime", "access", "use", "ctime", "status", NULL
226 static enum time_type
const time_types
[] =
228 time_atime
, time_atime
, time_atime
, time_ctime
, time_ctime
230 ARGMATCH_VERIFY (time_args
, time_types
);
232 /* `full-iso' uses full ISO-style dates and times. `long-iso' uses longer
233 ISO-style time stamps, though shorter than `full-iso'. `iso' uses shorter
234 ISO-style time stamps. */
237 full_iso_time_style
, /* --time-style=full-iso */
238 long_iso_time_style
, /* --time-style=long-iso */
239 iso_time_style
/* --time-style=iso */
242 static char const *const time_style_args
[] =
244 "full-iso", "long-iso", "iso", NULL
246 static enum time_style
const time_style_types
[] =
248 full_iso_time_style
, long_iso_time_style
, iso_time_style
250 ARGMATCH_VERIFY (time_style_args
, time_style_types
);
255 if (status
!= EXIT_SUCCESS
)
256 fprintf (stderr
, _("Try `%s --help' for more information.\n"),
261 Usage: %s [OPTION]... [FILE]...\n\
262 or: %s [OPTION]... --files0-from=F\n\
263 "), program_name
, program_name
);
265 Summarize disk usage of each FILE, recursively for directories.\n\
269 Mandatory arguments to long options are mandatory for short options too.\n\
272 -a, --all write counts for all files, not just directories\n\
273 --apparent-size print apparent sizes, rather than disk usage; although\
275 the apparent size is usually smaller, it may be\n\
276 larger due to holes in (`sparse') files, internal\n\
277 fragmentation, indirect blocks, and the like\n\
280 -B, --block-size=SIZE scale sizes by SIZE before printing them. E.g.,\n\
281 `-BM' prints sizes in units of 1,048,576 bytes.\n\
282 See SIZE format below.\n\
283 -b, --bytes equivalent to `--apparent-size --block-size=1'\n\
284 -c, --total produce a grand total\n\
285 -D, --dereference-args dereference only symlinks that are listed on the\n\
289 --files0-from=F summarize disk usage of the NUL-terminated file\n\
290 names specified in file F;\n\
291 If F is - then read names from standard input\n\
292 -H equivalent to --dereference-args (-D)\n\
293 -h, --human-readable print sizes in human readable format (e.g., 1K 234M 2G)\
295 --si like -h, but use powers of 1000 not 1024\n\
298 -k like --block-size=1K\n\
299 -l, --count-links count sizes many times if hard linked\n\
300 -m like --block-size=1M\n\
303 -L, --dereference dereference all symbolic links\n\
304 -P, --no-dereference don't follow any symbolic links (this is the default)\n\
305 -0, --null end each output line with 0 byte rather than newline\n\
306 -S, --separate-dirs do not include size of subdirectories\n\
307 -s, --summarize display only a total for each argument\n\
310 -x, --one-file-system skip directories on different file systems\n\
311 -X, --exclude-from=FILE exclude files that match any pattern in FILE\n\
312 --exclude=PATTERN exclude files that match PATTERN\n\
313 -d, --max-depth=N print the total for a directory (or file, with --all)\n\
314 only if it is N or fewer levels below the command\n\
315 line argument; --max-depth=0 is the same as\n\
319 --time show time of the last modification of any file in the\n\
320 directory, or any of its subdirectories\n\
321 --time=WORD show time as WORD instead of modification time:\n\
322 atime, access, use, ctime or status\n\
323 --time-style=STYLE show times using style STYLE:\n\
324 full-iso, long-iso, iso, +FORMAT\n\
325 FORMAT is interpreted like `date'\n\
327 fputs (HELP_OPTION_DESCRIPTION
, stdout
);
328 fputs (VERSION_OPTION_DESCRIPTION
, stdout
);
329 emit_blocksize_note ("DU");
331 emit_ancillary_info ();
336 /* Try to insert the INO/DEV pair into the global table, HTAB.
337 Return true if the pair is successfully inserted,
338 false if the pair is already in the table. */
340 hash_ins (ino_t ino
, dev_t dev
)
342 int inserted
= di_set_insert (di_set
, dev
, ino
);
348 /* FIXME: this code is nearly identical to code in date.c */
349 /* Display the date and time in WHEN according to the format specified
353 show_date (const char *format
, struct timespec when
)
355 struct tm
*tm
= localtime (&when
.tv_sec
);
358 char buf
[INT_BUFSIZE_BOUND (intmax_t)];
359 char *when_str
= timetostr (when
.tv_sec
, buf
);
360 error (0, 0, _("time %s is out of range"), when_str
);
361 fputs (when_str
, stdout
);
365 fprintftime (stdout
, format
, tm
, 0, when
.tv_nsec
);
368 /* Print N_BYTES. Convert it to a readable value before printing. */
371 print_only_size (uintmax_t n_bytes
)
373 char buf
[LONGEST_HUMAN_READABLE
+ 1];
374 fputs (human_readable (n_bytes
, buf
, human_output_opts
,
375 1, output_block_size
), stdout
);
378 /* Print size (and optionally time) indicated by *PDUI, followed by STRING. */
381 print_size (const struct duinfo
*pdui
, const char *string
)
383 print_only_size (pdui
->size
);
387 show_date (time_format
, pdui
->tmax
);
389 printf ("\t%s%c", string
, opt_nul_terminate_output
? '\0' : '\n');
393 /* This function is called once for every file system object that fts
394 encounters. fts does a depth-first traversal. This function knows
395 that and accumulates per-directory totals based on changes in
396 the depth of the current entry. It returns true on success. */
399 process_file (FTS
*fts
, FTSENT
*ent
)
403 struct duinfo dui_to_print
;
405 static size_t n_alloc
;
406 /* First element of the structure contains:
407 The sum of the st_size values of all entries in the single directory
408 at the corresponding level. Although this does include the st_size
409 corresponding to each subdirectory, it does not include the size of
410 any file in a subdirectory. Also corresponding last modified date.
411 Second element of the structure contains:
412 The sum of the sizes of all entries in the hierarchy at or below the
413 directory at the specified level. */
414 static struct dulevel
*dulvl
;
416 const char *file
= ent
->fts_path
;
417 const struct stat
*sb
= ent
->fts_statp
;
418 int info
= ent
->fts_info
;
422 /* An error occurred, but the size is known, so count it. */
423 error (0, ent
->fts_errno
, _("cannot read directory %s"), quote (file
));
426 else if (info
!= FTS_DP
)
428 bool excluded
= excluded_file_name (exclude
, file
);
431 /* Make the stat buffer *SB valid, or fail noisily. */
433 if (info
== FTS_NSOK
)
435 fts_set (fts
, ent
, FTS_AGAIN
);
436 FTSENT
const *e
= fts_read (fts
);
438 info
= ent
->fts_info
;
441 if (info
== FTS_NS
|| info
== FTS_SLNONE
)
443 error (0, ent
->fts_errno
, _("cannot access %s"), quote (file
));
447 if (fts
->fts_options
& FTS_XDEV
&& fts
->fts_dev
!= sb
->st_dev
)
453 && (hash_all
|| (! S_ISDIR (sb
->st_mode
) && 1 < sb
->st_nlink
))
454 && ! hash_ins (sb
->st_ino
, sb
->st_dev
)))
456 /* If ignoring a directory in preorder, skip its children.
457 Ignore the next fts_read output too, as it's a postorder
458 visit to the same directory. */
461 fts_set (fts
, ent
, FTS_SKIP
);
462 FTSENT
const *e
= fts_read (fts
);
475 /* An error occurred, but the size is known, so count it. */
476 error (0, ent
->fts_errno
, "%s", quote (file
));
481 if (cycle_warning_required (fts
, ent
))
483 emit_cycle_warning (file
);
493 : (uintmax_t) ST_NBLOCKS (*sb
) * ST_NBLOCKSIZE
),
494 (time_type
== time_mtime
? get_stat_mtime (sb
)
495 : time_type
== time_atime
? get_stat_atime (sb
)
496 : get_stat_ctime (sb
)));
498 level
= ent
->fts_level
;
503 n_alloc
= level
+ 10;
504 dulvl
= xcalloc (n_alloc
, sizeof *dulvl
);
508 if (level
== prev_level
)
510 /* This is usually the most common case. Do nothing. */
512 else if (level
> prev_level
)
514 /* Descending the hierarchy.
515 Clear the accumulators for *all* levels between prev_level
516 and the current one. The depth may change dramatically,
517 e.g., from 1 to 10. */
520 if (n_alloc
<= level
)
522 dulvl
= xnrealloc (dulvl
, level
, 2 * sizeof *dulvl
);
526 for (i
= prev_level
+ 1; i
<= level
; i
++)
528 duinfo_init (&dulvl
[i
].ent
);
529 duinfo_init (&dulvl
[i
].subdir
);
532 else /* level < prev_level */
534 /* Ascending the hierarchy.
535 Process a directory only after all entries in that
536 directory have been processed. When the depth decreases,
537 propagate sums from the children (prev_level) to the parent.
538 Here, the current level is always one smaller than the
540 assert (level
== prev_level
- 1);
541 duinfo_add (&dui_to_print
, &dulvl
[prev_level
].ent
);
542 if (!opt_separate_dirs
)
543 duinfo_add (&dui_to_print
, &dulvl
[prev_level
].subdir
);
544 duinfo_add (&dulvl
[level
].subdir
, &dulvl
[prev_level
].ent
);
545 duinfo_add (&dulvl
[level
].subdir
, &dulvl
[prev_level
].subdir
);
551 /* Let the size of a directory entry contribute to the total for the
552 containing directory, unless --separate-dirs (-S) is specified. */
553 if (! (opt_separate_dirs
&& IS_DIR_TYPE (info
)))
554 duinfo_add (&dulvl
[level
].ent
, &dui
);
556 /* Even if this directory is unreadable or we can't chdir into it,
557 do let its size contribute to the total. */
558 duinfo_add (&tot_dui
, &dui
);
560 if ((IS_DIR_TYPE (info
) && level
<= max_depth
)
561 || ((opt_all
&& level
<= max_depth
) || level
== 0))
562 print_size (&dui_to_print
, file
);
567 /* Recursively print the sizes of the directories (and, if selected, files)
568 named in FILES, the last entry of which is NULL.
569 BIT_FLAGS controls how fts works.
570 Return true if successful. */
573 du_files (char **files
, int bit_flags
)
579 FTS
*fts
= xfts_open (files
, bit_flags
, NULL
);
585 ent
= fts_read (fts
);
590 error (0, errno
, _("fts_read failed: %s"),
591 quotearg_colon (fts
->fts_path
));
595 /* When exiting this loop early, be careful to reset the
596 global, prev_level, used in process_file. Otherwise, its
597 (level == prev_level - 1) assertion could fail. */
601 FTS_CROSS_CHECK (fts
);
603 ok
&= process_file (fts
, ent
);
606 if (fts_close (fts
) != 0)
608 error (0, errno
, _("fts_close failed"));
617 main (int argc
, char **argv
)
620 bool max_depth_specified
= false;
622 char *files_from
= NULL
;
624 /* Bit flags that control how fts works. */
625 int bit_flags
= FTS_NOSTAT
;
627 /* Select one of the three FTS_ options that control if/when
628 to follow a symlink. */
629 int symlink_deref_bits
= FTS_PHYSICAL
;
631 /* If true, display only a total for each argument. */
632 bool opt_summarize_only
= false;
634 cwd_only
[0] = bad_cast (".");
637 initialize_main (&argc
, &argv
);
638 set_program_name (argv
[0]);
639 setlocale (LC_ALL
, "");
640 bindtextdomain (PACKAGE
, LOCALEDIR
);
641 textdomain (PACKAGE
);
643 atexit (close_stdout
);
645 exclude
= new_exclude ();
647 human_options (getenv ("DU_BLOCK_SIZE"),
648 &human_output_opts
, &output_block_size
);
653 int c
= getopt_long (argc
, argv
, "0abd:chHklmsxB:DLPSX:",
667 opt_nul_terminate_output
= true;
674 case APPARENT_SIZE_OPTION
:
675 apparent_size
= true;
679 apparent_size
= true;
680 human_output_opts
= 0;
681 output_block_size
= 1;
685 print_grand_total
= true;
689 human_output_opts
= human_autoscale
| human_SI
| human_base_1024
;
690 output_block_size
= 1;
693 case HUMAN_SI_OPTION
:
694 human_output_opts
= human_autoscale
| human_SI
;
695 output_block_size
= 1;
699 human_output_opts
= 0;
700 output_block_size
= 1024;
703 case 'd': /* --max-depth=N */
705 unsigned long int tmp_ulong
;
706 if (xstrtoul (optarg
, NULL
, 0, &tmp_ulong
, NULL
) == LONGINT_OK
707 && tmp_ulong
<= SIZE_MAX
)
709 max_depth_specified
= true;
710 max_depth
= tmp_ulong
;
714 error (0, 0, _("invalid maximum depth %s"),
722 human_output_opts
= 0;
723 output_block_size
= 1024 * 1024;
727 opt_count_all
= true;
731 opt_summarize_only
= true;
735 bit_flags
|= FTS_XDEV
;
740 enum strtol_error e
= human_options (optarg
, &human_output_opts
,
743 xstrtol_fatal (e
, oi
, c
, long_options
, optarg
);
747 case 'H': /* NOTE: before 2008-12, -H was equivalent to --si. */
749 symlink_deref_bits
= FTS_COMFOLLOW
| FTS_PHYSICAL
;
752 case 'L': /* --dereference */
753 symlink_deref_bits
= FTS_LOGICAL
;
756 case 'P': /* --no-dereference */
757 symlink_deref_bits
= FTS_PHYSICAL
;
761 opt_separate_dirs
= true;
765 if (add_exclude_file (add_exclude
, exclude
, optarg
,
766 EXCLUDE_WILDCARDS
, '\n'))
768 error (0, errno
, "%s", quotearg_colon (optarg
));
773 case FILES0_FROM_OPTION
:
778 add_exclude (exclude
, optarg
, EXCLUDE_WILDCARDS
);
785 ? XARGMATCH ("--time", optarg
, time_args
, time_types
)
789 case TIME_STYLE_OPTION
:
793 case_GETOPT_HELP_CHAR
;
795 case_GETOPT_VERSION_CHAR (PROGRAM_NAME
, AUTHORS
);
803 usage (EXIT_FAILURE
);
805 if (opt_all
&& opt_summarize_only
)
807 error (0, 0, _("cannot both summarize and show all entries"));
808 usage (EXIT_FAILURE
);
811 if (opt_summarize_only
&& max_depth_specified
&& max_depth
== 0)
814 _("warning: summarizing is the same as using --max-depth=0"));
817 if (opt_summarize_only
&& max_depth_specified
&& max_depth
!= 0)
819 unsigned long int d
= max_depth
;
820 error (0, 0, _("warning: summarizing conflicts with --max-depth=%lu"), d
);
821 usage (EXIT_FAILURE
);
824 if (opt_summarize_only
)
827 /* Process time style if printing last times. */
832 time_style
= getenv ("TIME_STYLE");
834 /* Ignore TIMESTYLE="locale", for compatibility with ls. */
835 if (! time_style
|| STREQ (time_style
, "locale"))
836 time_style
= "long-iso";
837 else if (*time_style
== '+')
839 /* Ignore anything after a newline, for compatibility
841 char *p
= strchr (time_style
, '\n');
847 /* Ignore "posix-" prefix, for compatibility with ls. */
848 static char const posix_prefix
[] = "posix-";
849 while (strncmp (time_style
, posix_prefix
, sizeof posix_prefix
- 1)
851 time_style
+= sizeof posix_prefix
- 1;
855 if (*time_style
== '+')
856 time_format
= time_style
+ 1;
859 switch (XARGMATCH ("time style", time_style
,
860 time_style_args
, time_style_types
))
862 case full_iso_time_style
:
863 time_format
= "%Y-%m-%d %H:%M:%S.%N %z";
866 case long_iso_time_style
:
867 time_format
= "%Y-%m-%d %H:%M";
871 time_format
= "%Y-%m-%d";
877 struct argv_iterator
*ai
;
880 /* When using --files0-from=F, you may not specify any files
881 on the command-line. */
884 error (0, 0, _("extra operand %s"), quote (argv
[optind
]));
885 fprintf (stderr
, "%s\n",
886 _("file operands cannot be combined with --files0-from"));
887 usage (EXIT_FAILURE
);
890 if (! (STREQ (files_from
, "-") || freopen (files_from
, "r", stdin
)))
891 error (EXIT_FAILURE
, errno
, _("cannot open %s for reading"),
894 ai
= argv_iter_init_stream (stdin
);
896 /* It's not easy here to count the arguments, so assume the
902 char **files
= (optind
< argc
? argv
+ optind
: cwd_only
);
903 ai
= argv_iter_init_argv (files
);
905 /* Hash all dev,ino pairs if there are multiple arguments, or if
906 following non-command-line symlinks, because in either case a
907 file with just one hard link might be seen more than once. */
908 hash_all
= (optind
+ 1 < argc
|| symlink_deref_bits
== FTS_LOGICAL
);
914 /* Initialize the set of dev,inode pairs. */
915 di_set
= di_set_alloc ();
919 /* If not hashing everything, process_file won't find cycles on its
920 own, so ask fts_read to check for them accurately. */
921 if (opt_count_all
|| ! hash_all
)
922 bit_flags
|= FTS_TIGHT_CYCLE_CHECK
;
924 bit_flags
|= symlink_deref_bits
;
925 static char *temp_argv
[] = { NULL
, NULL
};
929 bool skip_file
= false;
930 enum argv_iter_err ai_err
;
931 char *file_name
= argv_iter (ai
, &ai_err
);
939 error (0, errno
, _("%s: read error"),
940 quotearg_colon (files_from
));
946 assert (!"unexpected error code from argv_iter");
949 if (files_from
&& STREQ (files_from
, "-") && STREQ (file_name
, "-"))
951 /* Give a better diagnostic in an unusual case:
952 printf - | du --files0-from=- */
953 error (0, 0, _("when reading file names from stdin, "
954 "no file name of %s allowed"),
959 /* Report and skip any empty file names before invoking fts.
960 This works around a glitch in fts, which fails immediately
961 (without looking at the other file names) when given an empty
965 /* Diagnose a zero-length file name. When it's one
966 among many, knowing the record number may help.
967 FIXME: currently print the record number only with
968 --files0-from=FILE. Maybe do it for argv, too? */
969 if (files_from
== NULL
)
970 error (0, 0, "%s", _("invalid zero-length file name"));
973 /* Using the standard `filename:line-number:' prefix here is
974 not totally appropriate, since NUL is the separator, not NL,
975 but it might be better than nothing. */
976 unsigned long int file_number
= argv_iter_n_args (ai
);
977 error (0, 0, "%s:%lu: %s", quotearg_colon (files_from
),
978 file_number
, _("invalid zero-length file name"));
987 temp_argv
[0] = file_name
;
988 ok
&= du_files (temp_argv
, bit_flags
);
994 di_set_free (di_set
);
996 if (files_from
&& (ferror (stdin
) || fclose (stdin
) != 0) && ok
)
997 error (EXIT_FAILURE
, 0, _("error reading %s"), quote (files_from
));
999 if (print_grand_total
)
1000 print_size (&tot_dui
, _("total"));
1002 exit (ok
? EXIT_SUCCESS
: EXIT_FAILURE
);