1 /* pred.c -- execute the expression tree.
2 Copyright (C) 1990, 1991, 1992, 1993, 1994, 2000, 2003,
3 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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/>.
27 #include <sys/types.h>
41 #include "printquoted.h"
45 #include "stat-time.h"
46 #include "dircallback.h"
52 # define _(Text) gettext (Text)
57 # define N_(String) gettext_noop (String)
59 /* See locate.c for explanation as to why not use (String) */
60 # define N_(String) String
63 #if !defined(SIGCHLD) && defined(SIGCLD)
64 #define SIGCHLD SIGCLD
71 # define NAMLEN(dirent) strlen((dirent)->d_name)
73 # define dirent direct
74 # define NAMLEN(dirent) (dirent)->d_namlen
76 # include <sys/ndir.h>
87 /* Fake a return value. */
88 #define CLOSEDIR(d) (closedir (d), 0)
90 #define CLOSEDIR(d) closedir (d)
96 /* Get or fake the disk device blocksize.
97 Usually defined by sys/param.h (if at all). */
100 # define DEV_BSIZE BSIZE
102 # define DEV_BSIZE 4096
104 #endif /* !DEV_BSIZE */
106 /* Extract or fake data from a `struct stat'.
107 ST_BLKSIZE: Preferred I/O blocksize for the file, in bytes.
108 ST_NBLOCKS: Number of blocks in the file, including indirect blocks.
109 ST_NBLOCKSIZE: Size of blocks used when calculating ST_NBLOCKS. */
110 #ifndef HAVE_STRUCT_STAT_ST_BLOCKS
111 # define ST_BLKSIZE(statbuf) DEV_BSIZE
112 # if defined _POSIX_SOURCE || !defined BSIZE /* fileblocks.c uses BSIZE. */
113 # define ST_NBLOCKS(statbuf) \
114 (S_ISREG ((statbuf).st_mode) \
115 || S_ISDIR ((statbuf).st_mode) \
116 ? (statbuf).st_size / ST_NBLOCKSIZE + ((statbuf).st_size % ST_NBLOCKSIZE != 0) : 0)
117 # else /* !_POSIX_SOURCE && BSIZE */
118 # define ST_NBLOCKS(statbuf) \
119 (S_ISREG ((statbuf).st_mode) \
120 || S_ISDIR ((statbuf).st_mode) \
121 ? st_blocks ((statbuf).st_size) : 0)
122 # endif /* !_POSIX_SOURCE && BSIZE */
123 #else /* HAVE_STRUCT_STAT_ST_BLOCKS */
124 /* Some systems, like Sequents, return st_blksize of 0 on pipes. */
125 # define ST_BLKSIZE(statbuf) ((statbuf).st_blksize > 0 \
126 ? (statbuf).st_blksize : DEV_BSIZE)
127 # if defined hpux || defined __hpux__ || defined __hpux
128 /* HP-UX counts st_blocks in 1024-byte units.
129 This loses when mixing HP-UX and BSD file systems with NFS. */
130 # define ST_NBLOCKSIZE 1024
132 # if defined _AIX && defined _I386
133 /* AIX PS/2 counts st_blocks in 4K units. */
134 # define ST_NBLOCKSIZE (4 * 1024)
135 # else /* not AIX PS/2 */
137 # define ST_NBLOCKS(statbuf) \
138 (S_ISREG ((statbuf).st_mode) \
139 || S_ISDIR ((statbuf).st_mode) \
140 ? (statbuf).st_blocks * ST_BLKSIZE(statbuf)/ST_NBLOCKSIZE : 0)
142 # endif /* not AIX PS/2 */
144 #endif /* HAVE_STRUCT_STAT_ST_BLOCKS */
147 # define ST_NBLOCKS(statbuf) \
148 (S_ISREG ((statbuf).st_mode) \
149 || S_ISDIR ((statbuf).st_mode) \
150 ? (statbuf).st_blocks : 0)
153 #ifndef ST_NBLOCKSIZE
154 # define ST_NBLOCKSIZE 512
159 #define MAX(a, b) ((a) > (b) ? (a) : (b))
161 static boolean match_lname
PARAMS((const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
, boolean ignore_case
));
163 static char *format_date
PARAMS((struct timespec ts
, int kind
));
164 static char *ctime_format
PARAMS((struct timespec ts
));
173 struct pred_assoc pred_table
[] =
175 {pred_amin
, "amin "},
177 {pred_anewer
, "anewer "},
178 {pred_atime
, "atime "},
179 {pred_closeparen
, ") "},
180 {pred_cmin
, "cmin "},
181 {pred_cnewer
, "cnewer "},
183 {pred_ctime
, "ctime "},
184 {pred_delete
, "delete "},
185 {pred_empty
, "empty "},
186 {pred_exec
, "exec "},
187 {pred_execdir
, "execdir "},
188 {pred_executable
, "executable "},
189 {pred_false
, "false "},
190 {pred_fprint
, "fprint "},
191 {pred_fprint0
, "fprint0 "},
192 {pred_fprintf
, "fprintf "},
193 {pred_fstype
, "fstype "},
195 {pred_group
, "group "},
196 {pred_ilname
, "ilname "},
197 {pred_iname
, "iname "},
198 {pred_inum
, "inum "},
199 {pred_ipath
, "ipath "},
200 {pred_links
, "links "},
201 {pred_lname
, "lname "},
203 {pred_mmin
, "mmin "},
204 {pred_mtime
, "mtime "},
205 {pred_name
, "name "},
206 {pred_negate
, "not "},
207 {pred_newer
, "newer "},
208 {pred_newerXY
, "newerXY "},
209 {pred_nogroup
, "nogroup "},
210 {pred_nouser
, "nouser "},
212 {pred_okdir
, "okdir "},
213 {pred_openparen
, "( "},
215 {pred_path
, "path "},
216 {pred_perm
, "perm "},
217 {pred_print
, "print "},
218 {pred_print0
, "print0 "},
219 {pred_prune
, "prune "},
220 {pred_quit
, "quit "},
221 {pred_readable
, "readable "},
222 {pred_regex
, "regex "},
223 {pred_samefile
,"samefile "},
224 {pred_size
, "size "},
225 {pred_true
, "true "},
226 {pred_type
, "type "},
228 {pred_used
, "used "},
229 {pred_user
, "user "},
230 {pred_writable
, "writable "},
231 {pred_xtype
, "xtype "},
236 /* Returns ts1 - ts2 */
237 static double ts_difference(struct timespec ts1
,
240 double d
= difftime(ts1
.tv_sec
, ts2
.tv_sec
)
241 + (1.0e-9 * (ts1
.tv_nsec
- ts2
.tv_nsec
));
247 compare_ts(struct timespec ts1
,
250 if ((ts1
.tv_sec
== ts2
.tv_sec
) &&
251 (ts1
.tv_nsec
== ts2
.tv_nsec
))
257 double diff
= ts_difference(ts1
, ts2
);
258 return diff
< 0.0 ? -1 : +1;
262 /* Predicate processing routines.
264 PATHNAME is the full pathname of the file being checked.
265 *STAT_BUF contains information about PATHNAME.
266 *PRED_PTR contains information for applying the predicate.
268 Return true if the file passes this predicate, false if not. */
273 * Returns true if THE_TIME is
274 * COMP_GT: after the specified time
275 * COMP_LT: before the specified time
276 * COMP_EQ: less than WINDOW seconds after the specified time.
279 pred_timewindow(struct timespec ts
, struct predicate
const *pred_ptr
, int window
)
281 switch (pred_ptr
->args
.reftime
.kind
)
284 return compare_ts(ts
, pred_ptr
->args
.reftime
.ts
) > 0;
287 return compare_ts(ts
, pred_ptr
->args
.reftime
.ts
) < 0;
291 double delta
= ts_difference(ts
, pred_ptr
->args
.reftime
.ts
);
292 return (delta
>= 0.0 && delta
< window
);
301 pred_amin (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
304 return pred_timewindow(get_stat_atime(stat_buf
), pred_ptr
, 60);
308 pred_and (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
310 if (pred_ptr
->pred_left
== NULL
311 || apply_predicate(pathname
, stat_buf
, pred_ptr
->pred_left
))
313 return apply_predicate(pathname
, stat_buf
, pred_ptr
->pred_right
);
320 pred_anewer (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
323 assert (COMP_GT
== pred_ptr
->args
.reftime
.kind
);
324 return compare_ts(get_stat_atime(stat_buf
), pred_ptr
->args
.reftime
.ts
) > 0;
328 pred_atime (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
331 return pred_timewindow(get_stat_atime(stat_buf
), pred_ptr
, DAYSECS
);
335 pred_closeparen (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
345 pred_cmin (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
348 return pred_timewindow(get_stat_ctime(stat_buf
), pred_ptr
, 60);
352 pred_cnewer (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
356 assert (COMP_GT
== pred_ptr
->args
.reftime
.kind
);
357 return compare_ts(get_stat_ctime(stat_buf
), pred_ptr
->args
.reftime
.ts
) > 0;
361 pred_comma (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
363 if (pred_ptr
->pred_left
!= NULL
)
365 apply_predicate(pathname
, stat_buf
,pred_ptr
->pred_left
);
367 return apply_predicate(pathname
, stat_buf
, pred_ptr
->pred_right
);
371 pred_ctime (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
374 return pred_timewindow(get_stat_ctime(stat_buf
), pred_ptr
, DAYSECS
);
378 perform_delete(int flags
)
380 return 0 == unlinkat(state
.cwd_dir_fd
, state
.rel_pathname
, flags
);
385 pred_delete (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
389 if (strcmp (state
.rel_pathname
, "."))
392 if (state
.have_stat
&& S_ISDIR(stat_buf
->st_mode
))
393 flags
|= AT_REMOVEDIR
;
394 if (perform_delete(flags
))
402 if ((flags
& AT_REMOVEDIR
) == 0)
404 /* unlink() operation failed because we should have done rmdir(). */
405 flags
|= AT_REMOVEDIR
;
406 if (perform_delete(flags
))
411 error (0, errno
, _("cannot delete %s"),
412 safely_quote_err_filename(0, pathname
));
423 pred_empty (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
428 if (S_ISDIR (stat_buf
->st_mode
))
433 boolean empty
= true;
436 if ((fd
= openat(state
.cwd_dir_fd
, state
.rel_pathname
, O_RDONLY
437 #if defined O_LARGEFILE
442 error (0, errno
, "%s", safely_quote_err_filename(0, pathname
));
443 state
.exit_status
= 1;
449 error (0, errno
, "%s", safely_quote_err_filename(0, pathname
));
450 state
.exit_status
= 1;
453 for (dp
= readdir (d
); dp
; dp
= readdir (d
))
455 if (dp
->d_name
[0] != '.'
456 || (dp
->d_name
[1] != '\0'
457 && (dp
->d_name
[1] != '.' || dp
->d_name
[2] != '\0')))
465 error (0, errno
, "%s", safely_quote_err_filename(0, pathname
));
466 state
.exit_status
= 1;
471 else if (S_ISREG (stat_buf
->st_mode
))
472 return (stat_buf
->st_size
== 0);
478 new_impl_pred_exec (int dirfd
, const char *pathname
,
479 struct stat
*stat_buf
,
480 struct predicate
*pred_ptr
,
481 const char *prefix
, size_t pfxlen
)
483 struct exec_val
*execp
= &pred_ptr
->args
.exec_vec
;
484 size_t len
= strlen(pathname
);
487 execp
->dirfd
= dirfd
;
490 /* Push the argument onto the current list.
491 * The command may or may not be run at this point,
492 * depending on the command line length limits.
494 bc_push_arg(&execp
->ctl
,
500 /* remember that there are pending execdirs. */
501 state
.execdirs_outstanding
= true;
503 /* POSIX: If the primary expression is punctuated by a plus
504 * sign, the primary shall always evaluate as true
512 for (i
=0; i
<execp
->num_args
; ++i
)
514 bc_do_insert(&execp
->ctl
,
516 execp
->replace_vec
[i
],
517 strlen(execp
->replace_vec
[i
]),
523 /* Actually invoke the command. */
524 return execp
->ctl
.exec_callback(&execp
->ctl
,
531 pred_exec (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
533 return new_impl_pred_exec(get_start_dirfd(),
534 pathname
, stat_buf
, pred_ptr
, NULL
, 0);
538 pred_execdir (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
540 const char *prefix
= (state
.rel_pathname
[0] == '/') ? NULL
: "./";
542 return new_impl_pred_exec (get_current_dirfd(),
543 state
.rel_pathname
, stat_buf
, pred_ptr
,
544 prefix
, (prefix
? 2 : 0));
548 pred_false (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
559 pred_fls (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
561 FILE * stream
= pred_ptr
->args
.printf_vec
.stream
;
562 list_file (pathname
, state
.cwd_dir_fd
, state
.rel_pathname
, stat_buf
,
563 options
.start_time
.tv_sec
,
564 options
.output_block_size
,
565 pred_ptr
->literal_control_chars
, stream
);
570 pred_fprint (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
575 print_quoted(pred_ptr
->args
.printf_vec
.stream
,
576 pred_ptr
->args
.printf_vec
.quote_opts
,
577 pred_ptr
->args
.printf_vec
.dest_is_tty
,
584 pred_fprint0 (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
586 FILE * fp
= pred_ptr
->args
.printf_vec
.stream
;
590 fputs (pathname
, fp
);
598 mode_to_filetype(mode_t m
)
600 #define HANDLE_TYPE(t,letter) if (m==t) { return letter; }
602 HANDLE_TYPE(S_IFREG
, "f"); /* regular file */
605 HANDLE_TYPE(S_IFDIR
, "d"); /* directory */
608 HANDLE_TYPE(S_IFLNK
, "l"); /* symbolic link */
611 HANDLE_TYPE(S_IFSOCK
, "s"); /* Unix domain socket */
614 HANDLE_TYPE(S_IFBLK
, "b"); /* block device */
617 HANDLE_TYPE(S_IFCHR
, "c"); /* character device */
620 HANDLE_TYPE(S_IFIFO
, "p"); /* FIFO */
623 HANDLE_TYPE(S_IFDOOR
, "D"); /* Door (e.g. on Solaris) */
625 return "U"; /* Unknown */
629 file_sparseness(const struct stat
*p
)
631 #if defined HAVE_STRUCT_STAT_ST_BLOCKS
634 if (0 == p
->st_blocks
)
637 return p
->st_blocks
< 0 ? -HUGE_VAL
: HUGE_VAL
;
641 double blklen
= file_blocksize(p
) * (double)p
->st_blocks
;
642 return blklen
/ p
->st_size
;
652 checked_fprintf(struct format_val
*dest
, const char *fmt
, ...)
658 rv
= vfprintf(dest
->stream
, fmt
, ap
);
660 nonfatal_file_error(dest
->filename
);
665 checked_print_quoted (struct format_val
*dest
,
666 const char *format
, const char *s
)
668 int rv
= print_quoted(dest
->stream
, dest
->quote_opts
, dest
->dest_is_tty
,
671 nonfatal_file_error(dest
->filename
);
676 checked_fwrite(void *p
, size_t siz
, size_t nmemb
, struct format_val
*dest
)
678 int items_written
= fwrite(p
, siz
, nmemb
, dest
->stream
);
679 if (items_written
< nmemb
)
680 nonfatal_file_error(dest
->filename
);
684 checked_fflush(struct format_val
*dest
)
686 if (0 != fflush(dest
->stream
))
688 nonfatal_file_error(dest
->filename
);
693 do_fprintf(struct format_val
*dest
,
694 struct segment
*segment
,
695 const char *pathname
,
696 const struct stat
*stat_buf
)
698 char hbuf
[LONGEST_HUMAN_READABLE
+ 1];
701 switch (segment
->segkind
)
703 case KIND_PLAIN
: /* Plain text string (no % conversion). */
705 checked_fwrite(segment
->text
, 1, segment
->text_len
, dest
);
708 case KIND_STOP
: /* Terminate argument and flush output. */
710 checked_fwrite(segment
->text
, 1, segment
->text_len
, dest
);
711 checked_fflush(dest
);
715 switch (segment
->format_char
[0])
717 case 'a': /* atime in `ctime' format. */
718 /* UNTRUSTED, probably unexploitable */
719 checked_fprintf (dest
, segment
->text
, ctime_format (get_stat_atime(stat_buf
)));
721 case 'b': /* size in 512-byte blocks */
722 /* UNTRUSTED, probably unexploitable */
723 checked_fprintf (dest
, segment
->text
,
724 human_readable ((uintmax_t) ST_NBLOCKS (*stat_buf
),
726 ST_NBLOCKSIZE
, 512));
728 case 'c': /* ctime in `ctime' format */
729 /* UNTRUSTED, probably unexploitable */
730 checked_fprintf (dest
, segment
->text
, ctime_format (get_stat_ctime(stat_buf
)));
732 case 'd': /* depth in search tree */
733 /* UNTRUSTED, probably unexploitable */
734 checked_fprintf (dest
, segment
->text
, state
.curdepth
);
736 case 'D': /* Device on which file exists (stat.st_dev) */
738 checked_fprintf (dest
, segment
->text
,
739 human_readable ((uintmax_t) stat_buf
->st_dev
, hbuf
,
740 human_ceiling
, 1, 1));
742 case 'f': /* base name of path */
745 char *base
= base_name (pathname
);
746 checked_print_quoted (dest
, segment
->text
, base
);
750 case 'F': /* file system type */
752 checked_print_quoted (dest
, segment
->text
, filesystem_type (stat_buf
, pathname
));
754 case 'g': /* group name */
756 /* (well, the actual group is selected by the user but
757 * its name was selected by the system administrator)
762 g
= getgrgid (stat_buf
->st_gid
);
765 segment
->text
[segment
->text_len
] = 's';
766 checked_fprintf (dest
, segment
->text
, g
->gr_name
);
775 /*FALLTHROUGH*/ /*...sometimes, so 'G' case.*/
777 case 'G': /* GID number */
778 /* UNTRUSTED, probably unexploitable */
779 checked_fprintf (dest
, segment
->text
,
780 human_readable ((uintmax_t) stat_buf
->st_gid
, hbuf
,
781 human_ceiling
, 1, 1));
783 case 'h': /* leading directories part of path */
786 cp
= strrchr (pathname
, '/');
787 if (cp
== NULL
) /* No leading directories. */
789 /* If there is no slash in the pathname, we still
790 * print the string because it contains characters
791 * other than just '%s'. The %h expands to ".".
793 checked_print_quoted (dest
, segment
->text
, ".");
797 char *s
= strdup(pathname
);
798 s
[cp
- pathname
] = 0;
799 checked_print_quoted (dest
, segment
->text
, s
);
805 case 'H': /* ARGV element file was found under */
808 char *s
= xmalloc(state
.starting_path_length
+1);
809 memcpy(s
, pathname
, state
.starting_path_length
);
810 s
[state
.starting_path_length
] = 0;
811 checked_fprintf (dest
, segment
->text
, s
);
816 case 'i': /* inode number */
817 /* UNTRUSTED, but not exploitable I think */
818 checked_fprintf (dest
, segment
->text
,
819 human_readable ((uintmax_t) stat_buf
->st_ino
, hbuf
,
823 case 'k': /* size in 1K blocks */
824 /* UNTRUSTED, but not exploitable I think */
825 checked_fprintf (dest
, segment
->text
,
826 human_readable ((uintmax_t) ST_NBLOCKS (*stat_buf
),
828 ST_NBLOCKSIZE
, 1024));
830 case 'l': /* object of symlink */
836 if (S_ISLNK (stat_buf
->st_mode
))
838 linkname
= get_link_name_at (pathname
, state
.cwd_dir_fd
, state
.rel_pathname
);
840 state
.exit_status
= 1;
844 checked_print_quoted (dest
, segment
->text
, linkname
);
849 /* We still need to honour the field width etc., so this is
852 checked_print_quoted (dest
, segment
->text
, "");
858 case 'M': /* mode as 10 chars (eg., "-rwxr-x--x" */
859 /* UNTRUSTED, probably unexploitable */
861 char modestring
[16] ;
862 filemodestring (stat_buf
, modestring
);
863 modestring
[10] = '\0';
864 checked_fprintf (dest
, segment
->text
, modestring
);
868 case 'm': /* mode as octal number (perms only) */
869 /* UNTRUSTED, probably unexploitable */
871 /* Output the mode portably using the traditional numbers,
872 even if the host unwisely uses some other numbering
873 scheme. But help the compiler in the common case where
874 the host uses the traditional numbering scheme. */
875 mode_t m
= stat_buf
->st_mode
;
876 boolean traditional_numbering_scheme
=
877 (S_ISUID
== 04000 && S_ISGID
== 02000 && S_ISVTX
== 01000
878 && S_IRUSR
== 00400 && S_IWUSR
== 00200 && S_IXUSR
== 00100
879 && S_IRGRP
== 00040 && S_IWGRP
== 00020 && S_IXGRP
== 00010
880 && S_IROTH
== 00004 && S_IWOTH
== 00002 && S_IXOTH
== 00001);
881 checked_fprintf (dest
, segment
->text
,
882 (traditional_numbering_scheme
884 : ((m
& S_ISUID
? 04000 : 0)
885 | (m
& S_ISGID
? 02000 : 0)
886 | (m
& S_ISVTX
? 01000 : 0)
887 | (m
& S_IRUSR
? 00400 : 0)
888 | (m
& S_IWUSR
? 00200 : 0)
889 | (m
& S_IXUSR
? 00100 : 0)
890 | (m
& S_IRGRP
? 00040 : 0)
891 | (m
& S_IWGRP
? 00020 : 0)
892 | (m
& S_IXGRP
? 00010 : 0)
893 | (m
& S_IROTH
? 00004 : 0)
894 | (m
& S_IWOTH
? 00002 : 0)
895 | (m
& S_IXOTH
? 00001 : 0))));
899 case 'n': /* number of links */
900 /* UNTRUSTED, probably unexploitable */
901 checked_fprintf (dest
, segment
->text
,
902 human_readable ((uintmax_t) stat_buf
->st_nlink
,
908 case 'p': /* pathname */
910 checked_print_quoted (dest
, segment
->text
, pathname
);
913 case 'P': /* pathname with ARGV element stripped */
915 if (state
.curdepth
> 0)
917 cp
= pathname
+ state
.starting_path_length
;
919 /* Move past the slash between the ARGV element
920 and the rest of the pathname. But if the ARGV element
921 ends in a slash, we didn't add another, so we've
922 already skipped past it. */
929 checked_print_quoted (dest
, segment
->text
, cp
);
932 case 's': /* size in bytes */
933 /* UNTRUSTED, probably unexploitable */
934 checked_fprintf (dest
, segment
->text
,
935 human_readable ((uintmax_t) stat_buf
->st_size
,
936 hbuf
, human_ceiling
, 1, 1));
939 case 'S': /* sparseness */
940 /* UNTRUSTED, probably unexploitable */
941 checked_fprintf (dest
, segment
->text
, file_sparseness(stat_buf
));;
944 case 't': /* mtime in `ctime' format */
945 /* UNTRUSTED, probably unexploitable */
946 checked_fprintf (dest
, segment
->text
,
947 ctime_format (get_stat_mtime(stat_buf
)));
950 case 'u': /* user name */
952 /* (well, the actual user is selected by the user on systems
953 * where chown is not restricted, but the user name was
954 * selected by the system administrator)
959 p
= getpwuid (stat_buf
->st_uid
);
962 segment
->text
[segment
->text_len
] = 's';
963 checked_fprintf (dest
, segment
->text
, p
->pw_name
);
968 /* FALLTHROUGH*/ /* .. to case U */
970 case 'U': /* UID number */
971 /* UNTRUSTED, probably unexploitable */
972 checked_fprintf (dest
, segment
->text
,
973 human_readable ((uintmax_t) stat_buf
->st_uid
, hbuf
,
974 human_ceiling
, 1, 1));
977 /* %Y: type of file system entry like `ls -l`:
978 * (d,-,l,s,p,b,c,n) n=nonexistent(symlink)
980 case 'Y': /* in case of symlink */
984 if (S_ISLNK (stat_buf
->st_mode
))
987 /* If we would normally follow links, do not do so.
988 * If we would normally not follow links, do so.
990 if ((following_links() ? lstat
: stat
)
991 (state
.rel_pathname
, &sbuf
) != 0)
993 if ( errno
== ENOENT
)
995 checked_fprintf (dest
, segment
->text
, "N");
998 else if ( errno
== ELOOP
)
1000 checked_fprintf (dest
, segment
->text
, "L");
1005 checked_fprintf (dest
, segment
->text
, "?");
1006 error (0, errno
, "%s",
1007 safely_quote_err_filename(0, pathname
));
1013 checked_fprintf (dest
, segment
->text
,
1014 mode_to_filetype(sbuf
.st_mode
& S_IFMT
));
1016 #endif /* S_ISLNK */
1019 checked_fprintf (dest
, segment
->text
,
1020 mode_to_filetype(stat_buf
->st_mode
& S_IFMT
));
1028 checked_fprintf (dest
, segment
->text
,
1029 mode_to_filetype(stat_buf
->st_mode
& S_IFMT
));
1033 /* end of KIND_FORMAT case */
1039 pred_fprintf (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1041 struct format_val
*dest
= &pred_ptr
->args
.printf_vec
;
1042 struct segment
*segment
;
1044 for (segment
= dest
->segment
; segment
; segment
= segment
->next
)
1046 if ( (KIND_FORMAT
== segment
->segkind
) && segment
->format_char
[1]) /* Component of date. */
1051 switch (segment
->format_char
[0])
1054 ts
= get_stat_atime(stat_buf
);
1058 ts
= get_stat_birthtime(stat_buf
);
1059 if ('@' == segment
->format_char
[1])
1062 valid
= (ts
.tv_nsec
>= 0);
1065 ts
= get_stat_ctime(stat_buf
);
1069 ts
= get_stat_mtime(stat_buf
);
1076 /* We trust the output of format_date not to contain
1077 * nasty characters, though the value of the date
1078 * is itself untrusted data.
1083 checked_fprintf (dest
, segment
->text
,
1084 format_date (ts
, segment
->format_char
[1]));
1088 /* The specified timestamp is not available, output
1089 * nothing for the timestamp, but use the rest (so that
1090 * for example find foo -printf '[%Bs] %p\n' can print
1094 checked_fprintf (dest
, segment
->text
, "");
1099 /* Print a segment which is not a date. */
1100 do_fprintf(dest
, segment
, pathname
, stat_buf
);
1107 pred_fstype (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1111 if (strcmp (filesystem_type (stat_buf
, pathname
), pred_ptr
->args
.str
) == 0)
1118 pred_gid (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1122 switch (pred_ptr
->args
.numinfo
.kind
)
1125 if (stat_buf
->st_gid
> pred_ptr
->args
.numinfo
.l_val
)
1129 if (stat_buf
->st_gid
< pred_ptr
->args
.numinfo
.l_val
)
1133 if (stat_buf
->st_gid
== pred_ptr
->args
.numinfo
.l_val
)
1141 pred_group (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1145 if (pred_ptr
->args
.gid
== stat_buf
->st_gid
)
1152 pred_ilname (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1154 return match_lname (pathname
, stat_buf
, pred_ptr
, true);
1157 /* Common code between -name, -iname. PATHNAME is being visited, STR
1158 is name to compare basename against, and FLAGS are passed to
1161 pred_name_common (const char *pathname
, const char *str
, int flags
)
1163 /* Prefer last_component over base_name, to avoid malloc when
1165 char *base
= last_component (pathname
);
1167 /* base is empty only if pathname is a file system root. But recall
1168 that 'find / -name /' is one of the few times where a '/' in the
1169 -name must actually find something. */
1173 base
= base_name (pathname
);
1174 b
= fnmatch (str
, base
, flags
) == 0;
1178 /* FNM_PERIOD is not used here because POSIX requires that it not be.
1179 * See http://standards.ieee.org/reading/ieee/interp/1003-2-92_int/pasc-1003.2-126.html
1181 return fnmatch (str
, base
, flags
) == 0;
1185 pred_iname (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1188 return pred_name_common (pathname
, pred_ptr
->args
.str
, FNM_CASEFOLD
);
1192 pred_inum (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1196 switch (pred_ptr
->args
.numinfo
.kind
)
1199 if (stat_buf
->st_ino
> pred_ptr
->args
.numinfo
.l_val
)
1203 if (stat_buf
->st_ino
< pred_ptr
->args
.numinfo
.l_val
)
1207 if (stat_buf
->st_ino
== pred_ptr
->args
.numinfo
.l_val
)
1215 pred_ipath (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1219 if (fnmatch (pred_ptr
->args
.str
, pathname
, FNM_CASEFOLD
) == 0)
1225 pred_links (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1229 switch (pred_ptr
->args
.numinfo
.kind
)
1232 if (stat_buf
->st_nlink
> pred_ptr
->args
.numinfo
.l_val
)
1236 if (stat_buf
->st_nlink
< pred_ptr
->args
.numinfo
.l_val
)
1240 if (stat_buf
->st_nlink
== pred_ptr
->args
.numinfo
.l_val
)
1248 pred_lname (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1250 return match_lname (pathname
, stat_buf
, pred_ptr
, false);
1254 match_lname (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
, boolean ignore_case
)
1256 boolean ret
= false;
1258 if (S_ISLNK (stat_buf
->st_mode
))
1260 char *linkname
= get_link_name_at (pathname
, state
.cwd_dir_fd
, state
.rel_pathname
);
1263 if (fnmatch (pred_ptr
->args
.str
, linkname
,
1264 ignore_case
? FNM_CASEFOLD
: 0) == 0)
1269 #endif /* S_ISLNK */
1274 pred_ls (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1276 return pred_fls(pathname
, stat_buf
, pred_ptr
);
1280 pred_mmin (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1283 return pred_timewindow(get_stat_mtime(stat_buf
), pred_ptr
, 60);
1287 pred_mtime (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1290 return pred_timewindow(get_stat_mtime(stat_buf
), pred_ptr
, DAYSECS
);
1294 pred_name (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1297 return pred_name_common (pathname
, pred_ptr
->args
.str
, 0);
1301 pred_negate (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1303 return !apply_predicate(pathname
, stat_buf
, pred_ptr
->pred_right
);
1307 pred_newer (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1311 assert (COMP_GT
== pred_ptr
->args
.reftime
.kind
);
1312 return compare_ts(get_stat_mtime(stat_buf
), pred_ptr
->args
.reftime
.ts
) > 0;
1316 pred_newerXY (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1319 boolean collected
= false;
1321 assert (COMP_GT
== pred_ptr
->args
.reftime
.kind
);
1323 switch (pred_ptr
->args
.reftime
.xval
)
1326 assert (pred_ptr
->args
.reftime
.xval
!= XVAL_TIME
);
1330 ts
= get_stat_atime(stat_buf
);
1334 case XVAL_BIRTHTIME
:
1335 ts
= get_stat_birthtime(stat_buf
);
1337 if (ts
.tv_nsec
< 0);
1339 /* XXX: Cannot determine birth time. Warn once. */
1340 error(0, 0, _("Warning: cannot determine birth time of file %s"),
1341 safely_quote_err_filename(0, pathname
));
1347 ts
= get_stat_ctime(stat_buf
);
1352 ts
= get_stat_mtime(stat_buf
);
1358 return compare_ts(ts
, pred_ptr
->args
.reftime
.ts
) > 0;
1362 pred_nogroup (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1368 extern char *gid_unused
;
1370 return gid_unused
[(unsigned) stat_buf
->st_gid
];
1372 return getgrgid (stat_buf
->st_gid
) == NULL
;
1377 pred_nouser (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1380 extern char *uid_unused
;
1387 return uid_unused
[(unsigned) stat_buf
->st_uid
];
1389 return getpwuid (stat_buf
->st_uid
) == NULL
;
1395 is_ok(const char *program
, const char *arg
)
1398 /* The draft open standard requires that, in the POSIX locale,
1399 the last non-blank character of this prompt be '?'.
1400 The exact format is not specified.
1401 This standard does not have requirements for locales other than POSIX
1403 /* XXX: printing UNTRUSTED data here. */
1404 fprintf (stderr
, _("< %s ... %s > ? "), program
, arg
);
1410 pred_ok (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1412 if (is_ok(pred_ptr
->args
.exec_vec
.replace_vec
[0], pathname
))
1413 return new_impl_pred_exec (get_start_dirfd(),
1414 pathname
, stat_buf
, pred_ptr
, NULL
, 0);
1420 pred_okdir (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1422 const char *prefix
= (state
.rel_pathname
[0] == '/') ? NULL
: "./";
1423 if (is_ok(pred_ptr
->args
.exec_vec
.replace_vec
[0], pathname
))
1424 return new_impl_pred_exec (get_current_dirfd(),
1425 state
.rel_pathname
, stat_buf
, pred_ptr
,
1426 prefix
, (prefix
? 2 : 0));
1432 pred_openparen (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1441 pred_or (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1443 if (pred_ptr
->pred_left
== NULL
1444 || !apply_predicate(pathname
, stat_buf
, pred_ptr
->pred_left
))
1446 return apply_predicate(pathname
, stat_buf
, pred_ptr
->pred_right
);
1453 pred_path (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1456 if (fnmatch (pred_ptr
->args
.str
, pathname
, 0) == 0)
1462 pred_perm (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1464 mode_t mode
= stat_buf
->st_mode
;
1465 mode_t perm_val
= pred_ptr
->args
.perm
.val
[S_ISDIR (mode
) != 0];
1467 switch (pred_ptr
->args
.perm
.kind
)
1470 return (mode
& perm_val
) == perm_val
;
1474 /* True if any of the bits set in the mask are also set in the file's mode.
1477 * Otherwise, if onum is prefixed by a hyphen, the primary shall
1478 * evaluate as true if at least all of the bits specified in
1479 * onum that are also set in the octal mask 07777 are set.
1481 * Eric Blake's interpretation is that the mode argument is zero,
1485 return true; /* Savannah bug 14748; we used to return false */
1487 return (mode
& perm_val
) != 0;
1491 return (mode
& MODE_ALL
) == perm_val
;
1501 struct access_check_args
1503 const char *filename
;
1510 access_callback(void *context
)
1513 struct access_check_args
*args
= context
;
1514 if ((rv
= access(args
->filename
, args
->access_type
)) < 0)
1515 args
->cb_errno
= errno
;
1520 can_access(int access_type
)
1522 struct access_check_args args
;
1523 args
.filename
= state
.rel_pathname
;
1524 args
.access_type
= access_type
;
1526 return 0 == run_in_dir(state
.cwd_dir_fd
, access_callback
, &args
);
1531 pred_executable (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1537 return can_access(X_OK
);
1541 pred_readable (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1547 return can_access(R_OK
);
1551 pred_writable (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1557 return can_access(W_OK
);
1561 pred_print (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1566 print_quoted(pred_ptr
->args
.printf_vec
.stream
,
1567 pred_ptr
->args
.printf_vec
.quote_opts
,
1568 pred_ptr
->args
.printf_vec
.dest_is_tty
,
1574 pred_print0 (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1576 return pred_fprint0(pathname
, stat_buf
, pred_ptr
);
1580 pred_prune (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1585 if (options
.do_dir_first
== true &&
1587 S_ISDIR(stat_buf
->st_mode
))
1588 state
.stop_at_current_level
= true;
1590 return (options
.do_dir_first
); /* This is what SunOS find seems to do. */
1594 pred_quit (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1600 /* Run any cleanups. This includes executing any command lines
1601 * we have partly built but not executed.
1605 /* Since -exec and friends don't leave child processes running in the
1606 * background, there is no need to wait for them here.
1608 exit(state
.exit_status
); /* 0 for success, etc. */
1612 pred_regex (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1614 int len
= strlen (pathname
);
1616 if (re_match (pred_ptr
->args
.regex
, pathname
, len
, 0,
1617 (struct re_registers
*) NULL
) == len
)
1623 pred_size (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1628 f_val
= ((stat_buf
->st_size
/ pred_ptr
->args
.size
.blocksize
)
1629 + (stat_buf
->st_size
% pred_ptr
->args
.size
.blocksize
!= 0));
1630 switch (pred_ptr
->args
.size
.kind
)
1633 if (f_val
> pred_ptr
->args
.size
.size
)
1637 if (f_val
< pred_ptr
->args
.size
.size
)
1641 if (f_val
== pred_ptr
->args
.size
.size
)
1649 pred_samefile (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1651 /* Potential optimisation: because of the loop protection, we always
1652 * know the device of the current directory, hence the device number
1653 * of the file we're currently considering. If -L is not in effect,
1654 * and the device number of the file we're looking for is not the
1655 * same as the device number of the current directory, this
1656 * predicate cannot return true. Hence there would be no need to
1657 * stat the file we're looking at.
1661 /* We will often still have an fd open on the file under consideration,
1662 * but that's just to ensure inode number stability by maintaining
1663 * a reference to it; we don't need the file for anything else.
1665 return stat_buf
->st_ino
== pred_ptr
->args
.samefileid
.ino
1666 && stat_buf
->st_dev
== pred_ptr
->args
.samefileid
.dev
;
1670 pred_true (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1679 pred_type (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1682 mode_t type
= pred_ptr
->args
.type
;
1684 assert (state
.have_type
);
1686 if (0 == state
.type
)
1688 /* This can sometimes happen with broken NFS servers.
1689 * See Savannah bug #16378.
1696 if (state
.have_stat
)
1697 mode
= stat_buf
->st_mode
;
1702 /* POSIX system; check `mode' the slow way. */
1703 if ((S_ISBLK (mode
) && type
== S_IFBLK
)
1704 || (S_ISCHR (mode
) && type
== S_IFCHR
)
1705 || (S_ISDIR (mode
) && type
== S_IFDIR
)
1706 || (S_ISREG (mode
) && type
== S_IFREG
)
1708 || (S_ISLNK (mode
) && type
== S_IFLNK
)
1711 || (S_ISFIFO (mode
) && type
== S_IFIFO
)
1714 || (S_ISSOCK (mode
) && type
== S_IFSOCK
)
1717 || (S_ISDOOR (mode
) && type
== S_IFDOOR
)
1721 /* Unix system; check `mode' the fast way. */
1722 if ((mode
& S_IFMT
) == type
)
1730 pred_uid (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1733 switch (pred_ptr
->args
.numinfo
.kind
)
1736 if (stat_buf
->st_uid
> pred_ptr
->args
.numinfo
.l_val
)
1740 if (stat_buf
->st_uid
< pred_ptr
->args
.numinfo
.l_val
)
1744 if (stat_buf
->st_uid
== pred_ptr
->args
.numinfo
.l_val
)
1752 pred_used (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1754 struct timespec delta
, at
, ct
;
1758 /* TODO: this needs to be retested carefully (manually, if necessary) */
1759 at
= get_stat_atime(stat_buf
);
1760 ct
= get_stat_ctime(stat_buf
);
1761 delta
.tv_sec
= at
.tv_sec
- ct
.tv_sec
;
1762 delta
.tv_nsec
= at
.tv_nsec
- ct
.tv_nsec
;
1763 if (delta
.tv_nsec
< 0)
1765 delta
.tv_nsec
+= 1000000000;
1768 return pred_timewindow(delta
, pred_ptr
, DAYSECS
);
1772 pred_user (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1775 if (pred_ptr
->args
.uid
== stat_buf
->st_uid
)
1782 pred_xtype (const char *pathname
, struct stat
*stat_buf
, struct predicate
*pred_ptr
)
1784 struct stat sbuf
; /* local copy, not stat_buf because we're using a different stat method */
1785 int (*ystat
) (const char*, struct stat
*p
);
1787 /* If we would normally stat the link itself, stat the target instead.
1788 * If we would normally follow the link, stat the link itself instead.
1790 if (following_links())
1791 ystat
= optionp_stat
;
1793 ystat
= optionl_stat
;
1795 set_stat_placeholders(&sbuf
);
1796 if ((*ystat
) (state
.rel_pathname
, &sbuf
) != 0)
1798 if (following_links() && errno
== ENOENT
)
1800 /* If we failed to follow the symlink,
1801 * fall back on looking at the symlink itself.
1803 /* Mimic behavior of ls -lL. */
1804 return (pred_type (pathname
, stat_buf
, pred_ptr
));
1808 error (0, errno
, "%s", safely_quote_err_filename(0, pathname
));
1809 state
.exit_status
= 1;
1813 /* Now that we have our stat() information, query it in the same
1814 * way that -type does.
1816 return (pred_type (pathname
, &sbuf
, pred_ptr
));
1819 /* 1) fork to get a child; parent remembers the child pid
1820 2) child execs the command requested
1821 3) parent waits for child; checks for proper pid of child
1825 ret errno status(h) status(l)
1827 pid x signal# 0177 stopped
1828 pid x exit arg 0 term by _exit
1829 pid x 0 signal # term by signal
1830 -1 EINTR parent got signal
1831 -1 other some other kind of error
1833 Return true only if the pid matches, status(l) is
1834 zero, and the exit arg (status high) is 0.
1835 Otherwise return false, possibly printing an error message. */
1839 prep_child_for_exec (boolean close_stdin
, int dirfd
)
1844 const char inputfile
[] = "/dev/null";
1848 error(0, errno
, _("Cannot close standard input"));
1853 if (open(inputfile
, O_RDONLY
1854 #if defined O_LARGEFILE
1859 /* This is not entirely fatal, since
1860 * executing the child with a closed
1861 * stdin is almost as good as executing it
1862 * with its stdin attached to /dev/null.
1864 error (0, errno
, "%s", safely_quote_err_filename(0, inputfile
));
1865 /* do not set ok=false, it is OK to continue anyway. */
1870 /* Even if DebugSearch is set, don't announce our change of
1871 * directory, since we're not going to emit a subsequent
1872 * announcement of a call to stat() anyway, as we're about to exec
1875 if (dirfd
!= AT_FDCWD
)
1877 assert (dirfd
>= 0);
1878 if (0 != fchdir(dirfd
))
1880 /* If we cannot execute our command in the correct directory,
1881 * we should not execute it at all.
1883 error(0, errno
, _("Failed to change directory"));
1893 launch (const struct buildcmd_control
*ctl
,
1894 struct buildcmd_state
*buildstate
)
1898 static int first_time
= 1;
1899 const struct exec_val
*execp
= buildstate
->usercontext
;
1901 if (!execp
->use_current_dir
)
1903 assert (starting_desc
>= 0);
1904 assert (execp
->dirfd
== starting_desc
);
1908 /* Null terminate the arg list. */
1909 bc_push_arg (ctl
, buildstate
, (char *) NULL
, 0, NULL
, 0, false);
1911 /* Make sure output of command doesn't get mixed with find output. */
1915 /* Make sure to listen for the kids. */
1919 signal (SIGCHLD
, SIG_DFL
);
1922 child_pid
= fork ();
1923 if (child_pid
== -1)
1924 error (1, errno
, _("cannot fork"));
1927 /* We are the child. */
1928 assert (starting_desc
>= 0);
1929 if (!prep_child_for_exec(execp
->close_stdin
, execp
->dirfd
))
1934 execvp (buildstate
->cmd_argv
[0], buildstate
->cmd_argv
);
1935 error (0, errno
, "%s",
1936 safely_quote_err_filename(0, buildstate
->cmd_argv
[0]));
1941 /* In parent; set up for next time. */
1942 bc_clear_args(ctl
, buildstate
);
1945 while (waitpid (child_pid
, &wait_status
, 0) == (pid_t
) -1)
1949 error (0, errno
, _("error waiting for %s"),
1950 safely_quote_err_filename(0, buildstate
->cmd_argv
[0]));
1951 state
.exit_status
= 1;
1952 return 0; /* FAIL */
1956 if (WIFSIGNALED (wait_status
))
1958 error (0, 0, _("%s terminated by signal %d"),
1959 quotearg_n_style(0, options
.err_quoting_style
,
1960 buildstate
->cmd_argv
[0]),
1961 WTERMSIG (wait_status
));
1963 if (execp
->multiple
)
1965 /* -exec \; just returns false if the invoked command fails.
1966 * -exec {} + returns true if the invoked command fails, but
1967 * sets the program exit status.
1969 state
.exit_status
= 1;
1975 if (0 == WEXITSTATUS (wait_status
))
1981 if (execp
->multiple
)
1983 /* -exec \; just returns false if the invoked command fails.
1984 * -exec {} + returns true if the invoked command fails, but
1985 * sets the program exit status.
1987 state
.exit_status
= 1;
1989 return 0; /* FAIL */
1995 /* Return a static string formatting the time WHEN according to the
1996 * strftime format character KIND.
1998 * This function contains a number of assertions. These look like
1999 * runtime checks of the results of computations, which would be a
2000 * problem since external events should not be tested for with
2001 * "assert" (instead you should use "if"). However, they are not
2002 * really runtime checks. The assertions actually exist to verify
2003 * that the various buffers are correctly sized.
2006 format_date (struct timespec ts
, int kind
)
2008 /* In theory, we use an extra 10 characters for 9 digits of
2009 * nanoseconds and 1 for the decimal point. However, the real
2010 * world is more complex than that.
2012 * For example, some systems return junk in the tv_nsec part of
2013 * st_birthtime. An example of this is the NetBSD-4.0-RELENG kernel
2014 * (at Sat Mar 24 18:46:46 2007) running a NetBSD-3.1-RELEASE
2015 * runtime and examining files on an msdos filesytem. So for that
2016 * reason we set NS_BUF_LEN to 32, which is simply "long enough" as
2017 * opposed to "exactly the right size". Note that the behaviour of
2018 * NetBSD appears to be a result of the use of uninitialised data,
2019 * as it's not 100% reproducible (more like 25%).
2023 DATE_LEN_PERCENT_APLUS
=21 /* length of result of %A+ (it's longer than %c)*/
2025 static char buf
[128u+10u + MAX(DATE_LEN_PERCENT_APLUS
,
2026 MAX (LONGEST_HUMAN_READABLE
+ 2, NS_BUF_LEN
+64+200))];
2027 char ns_buf
[NS_BUF_LEN
]; /* -.9999999990 (- sign can happen!)*/
2028 int charsprinted
, need_ns_suffix
;
2032 /* human_readable() assumes we pass a buffer which is at least as
2033 * long as LONGEST_HUMAN_READABLE. We use an assertion here to
2034 * ensure that no nasty unsigned overflow happend in our calculation
2035 * of the size of buf. Do the assertion here rather than in the
2036 * code for %@ so that we find the problem quickly if it exists. If
2037 * you want to submit a patch to move this into the if statement, go
2038 * ahead, I'll apply it. But include performance timings
2039 * demonstrating that the performance difference is actually
2042 verify (sizeof(buf
) >= LONGEST_HUMAN_READABLE
);
2047 /* Format the main part of the time. */
2050 strcpy (fmt
, "%F+%T");
2059 /* %a, %c, and %t are handled in ctime_format() */
2076 /* Format the nanoseconds part. Leave a trailing zero to
2077 * discourage people from writing scripts which extract the
2078 * fractional part of the timestamp by using column offsets.
2079 * The reason for discouraging this is that in the future, the
2080 * granularity may not be nanoseconds.
2083 charsprinted
= snprintf(ns_buf
, NS_BUF_LEN
, ".%09ld0", (long int)ts
.tv_nsec
);
2084 assert (charsprinted
< NS_BUF_LEN
);
2088 && (tm
= localtime (&ts
.tv_sec
))
2089 && strftime (buf
, sizeof buf
, fmt
, tm
))
2091 /* For %AS, %CS, %TS, add the fractional part of the seconds
2096 assert ((sizeof buf
- strlen(buf
)) > strlen(ns_buf
));
2097 strcat(buf
, ns_buf
);
2103 uintmax_t w
= ts
.tv_sec
;
2104 size_t used
, len
, remaining
;
2106 /* XXX: note that we are negating an unsigned type which is the
2107 * widest possible unsigned type.
2109 char *p
= human_readable (ts
.tv_sec
< 0 ? -w
: w
, buf
+ 1,
2110 human_ceiling
, 1, 1);
2112 assert (p
< (buf
+ (sizeof buf
)));
2114 *--p
= '-'; /* XXX: Ugh, relying on internal details of human_readable(). */
2116 /* Add the nanoseconds part. Because we cannot enforce a
2117 * particlar implementation of human_readable, we cannot assume
2118 * any particular value for (p-buf). So we need to be careful
2119 * that there is enough space remaining in the buffer.
2124 used
= (p
-buf
) + len
; /* Offset into buf of current end */
2125 assert (sizeof buf
> used
); /* Ensure we can perform subtraction safely. */
2126 remaining
= sizeof buf
- used
- 1u; /* allow space for NUL */
2128 if (strlen(ns_buf
) >= remaining
)
2131 "charsprinted=%ld but remaining=%lu: ns_buf=%s",
2132 (long)charsprinted
, (unsigned long)remaining
, ns_buf
);
2134 assert (strlen(ns_buf
) < remaining
);
2141 static const char *weekdays
[] =
2143 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
2145 static char * months
[] =
2147 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
2148 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
2153 ctime_format (struct timespec ts
)
2155 const struct tm
* ptm
;
2156 #define TIME_BUF_LEN 1024u
2157 static char resultbuf
[TIME_BUF_LEN
];
2160 ptm
= localtime(&ts
.tv_sec
);
2163 assert (ptm
->tm_wday
>= 0);
2164 assert (ptm
->tm_wday
< 7);
2165 assert (ptm
->tm_mon
>= 0);
2166 assert (ptm
->tm_mon
< 12);
2167 assert (ptm
->tm_hour
>= 0);
2168 assert (ptm
->tm_hour
< 24);
2169 assert (ptm
->tm_min
< 60);
2170 assert (ptm
->tm_sec
<= 61); /* allows 2 leap seconds. */
2172 /* wkday mon mday hh:mm:ss.nnnnnnnnn yyyy */
2173 nout
= snprintf(resultbuf
, TIME_BUF_LEN
,
2174 "%3s %3s %2d %02d:%02d:%02d.%010ld %04d",
2175 weekdays
[ptm
->tm_wday
],
2176 months
[ptm
->tm_mon
],
2181 (long int)ts
.tv_nsec
,
2182 1900 + ptm
->tm_year
);
2184 assert (nout
< TIME_BUF_LEN
);
2189 /* The time cannot be represented as a struct tm.
2190 Output it as an integer. */
2191 return format_date (ts
, '@');
2195 /* Copy STR into BUF and trim blanks from the end of BUF.
2199 blank_rtrim (str
, buf
)
2208 i
= strlen (buf
) - 1;
2209 while ((i
>= 0) && ((buf
[i
] == ' ') || buf
[i
] == '\t'))
2215 /* Print out the predicate list starting at NODE. */
2217 print_list (FILE *fp
, struct predicate
*node
)
2219 struct predicate
*cur
;
2225 fprintf (fp
, "[%s] ", blank_rtrim (cur
->p_name
, name
));
2226 cur
= cur
->pred_next
;
2231 /* Print out the predicate list starting at NODE. */
2233 print_parenthesised(FILE *fp
, struct predicate
*node
)
2239 if ((pred_is(node
, pred_or
) || pred_is(node
, pred_and
))
2240 && node
->pred_left
== NULL
)
2242 /* We print "<nothing> or X" as just "X"
2243 * We print "<nothing> and X" as just "X"
2245 print_parenthesised(fp
, node
->pred_right
);
2249 if (node
->pred_left
|| node
->pred_right
)
2253 fprintf(fp
, "%s", " ( ");
2254 print_optlist(fp
, node
);
2256 fprintf(fp
, "%s", " ) ");
2262 print_optlist (FILE *fp
, const struct predicate
*p
)
2266 print_parenthesised(fp
, p
->pred_left
);
2269 p
->need_stat
? "[call stat] " : "",
2270 p
->need_type
? "[need type] " : "");
2271 print_predicate(fp
, p
);
2272 fprintf(fp
, " [%g] ", p
->est_success_rate
);
2273 if (options
.debug_options
& DebugSuccessRates
)
2275 fprintf(fp
, "[%ld/%ld", p
->perf
.successes
, p
->perf
.visits
);
2278 double real_rate
= (double)p
->perf
.successes
/ (double)p
->perf
.visits
;
2279 fprintf(fp
, "=%g] ", real_rate
);
2283 fprintf(fp
, "=_] ");
2286 print_parenthesised(fp
, p
->pred_right
);
2290 void show_success_rates(const struct predicate
*p
)
2292 if (options
.debug_options
& DebugSuccessRates
)
2294 fprintf(stderr
, "Predicate success rates after completion:\n");
2295 print_optlist(stderr
, p
);
2296 fprintf(stderr
, "\n");
2304 /* If _NDEBUG is defined, the assertions will do nothing. Hence
2305 * there is no point in having a function body for pred_sanity_check()
2306 * if that preprocessor macro is defined.
2309 pred_sanity_check(const struct predicate
*predicates
)
2311 /* Do nothing, since assert is a no-op with _NDEBUG set */
2316 pred_sanity_check(const struct predicate
*predicates
)
2318 const struct predicate
*p
;
2320 for (p
=predicates
; p
!= NULL
; p
=p
->pred_next
)
2322 /* All predicates must do something. */
2323 assert (p
->pred_func
!= NULL
);
2325 /* All predicates must have a parser table entry. */
2326 assert (p
->parser_entry
!= NULL
);
2328 /* If the parser table tells us that just one predicate function is
2329 * possible, verify that that is still the one that is in effect.
2330 * If the parser has NULL for the predicate function, that means that
2331 * the parse_xxx function fills it in, so we can't check it.
2333 if (p
->parser_entry
->pred_func
)
2335 assert (p
->parser_entry
->pred_func
== p
->pred_func
);
2338 switch (p
->parser_entry
->type
)
2340 /* Options all take effect during parsing, so there should
2341 * be no predicate entries corresponding to them. Hence we
2342 * should not see any ARG_OPTION or ARG_POSITIONAL_OPTION
2345 * This is a silly way of coding this test, but it prevents
2346 * a compiler warning (i.e. otherwise it would think that
2347 * there would be case statements missing).
2350 case ARG_POSITIONAL_OPTION
:
2351 assert (p
->parser_entry
->type
!= ARG_OPTION
);
2352 assert (p
->parser_entry
->type
!= ARG_POSITIONAL_OPTION
);
2356 assert(p
->side_effects
); /* actions have side effects. */
2357 if (!pred_is(p
, pred_prune
) && !pred_is(p
, pred_quit
))
2359 /* actions other than -prune and -quit should
2360 * inhibit the default -print
2362 assert (p
->no_default_print
);
2366 /* We happen to know that the only user of ARG_SPECIAL_PARSE
2367 * is a test, so handle it like ARG_TEST.
2369 case ARG_SPECIAL_PARSE
:
2371 case ARG_PUNCTUATION
:
2373 /* Punctuation and tests should have no side
2374 * effects and not inhibit default print.
2376 assert (!p
->no_default_print
);
2377 assert (!p
->side_effects
);