1 /* parser.c -- convert the command line args into an expression tree.
2 Copyright (C) 1990, 1991, 1992, 1993, 1994, 2000, 2001, 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/>.
29 #include "modechange.h"
37 #include "stdio-safer.h"
38 #include "regextype.h"
39 #include "stat-time.h"
44 #include "findutils-version.h"
49 /* The presence of unistd.h is assumed by gnulib these days, so we
50 * might as well assume it too.
52 /* We need <unistd.h> for isatty(). */
58 # define _(Text) gettext (Text)
63 # define N_(String) gettext_noop (String)
65 /* See locate.c for explanation as to why not use (String) */
66 # define N_(String) String
69 #if !defined (isascii) || defined (STDC_HEADERS)
76 #define ISDIGIT(c) (isascii ((unsigned char)c) && isdigit ((unsigned char)c))
77 #define ISUPPER(c) (isascii ((unsigned char)c) && isupper ((unsigned char)c))
86 static boolean parse_accesscheck
PARAMS((const struct parser_table
* entry
, char **argv
, int *arg_ptr
));
87 static boolean parse_amin
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
88 static boolean parse_and
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
89 static boolean parse_anewer
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
90 static boolean parse_cmin
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
91 static boolean parse_cnewer
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
92 static boolean parse_comma
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
93 static boolean parse_daystart
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
94 static boolean parse_delete
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
95 static boolean parse_d
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
96 static boolean parse_depth
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
97 static boolean parse_empty
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
98 static boolean parse_exec
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
99 static boolean parse_execdir
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
100 static boolean parse_false
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
101 static boolean parse_fls
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
102 static boolean parse_fprintf
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
103 static boolean parse_follow
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
104 static boolean parse_fprint
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
105 static boolean parse_fprint0
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
106 static boolean parse_fstype
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
107 static boolean parse_gid
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
108 static boolean parse_group
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
109 static boolean parse_help
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
110 static boolean parse_ilname
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
111 static boolean parse_iname
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
112 static boolean parse_inum
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
113 static boolean parse_ipath
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
114 static boolean parse_iregex
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
115 static boolean parse_iwholename
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
116 static boolean parse_links
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
117 static boolean parse_lname
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
118 static boolean parse_ls
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
119 static boolean parse_maxdepth
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
120 static boolean parse_mindepth
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
121 static boolean parse_mmin
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
122 static boolean parse_name
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
123 static boolean parse_negate
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
124 static boolean parse_newer
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
125 static boolean parse_newerXY
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
126 static boolean parse_noleaf
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
127 static boolean parse_nogroup
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
128 static boolean parse_nouser
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
129 static boolean parse_nowarn
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
130 static boolean parse_ok
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
131 static boolean parse_okdir
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
132 static boolean parse_or
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
133 static boolean parse_path
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
134 static boolean parse_perm
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
135 static boolean parse_print0
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
136 static boolean parse_printf
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
137 static boolean parse_prune
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
138 static boolean parse_regex
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
139 static boolean parse_regextype
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
140 static boolean parse_samefile
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
142 static boolean parse_show_control_chars
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
144 static boolean parse_size
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
145 static boolean parse_time
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
146 static boolean parse_true
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
147 static boolean parse_type
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
148 static boolean parse_uid
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
149 static boolean parse_used
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
150 static boolean parse_user
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
151 static boolean parse_version
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
152 static boolean parse_wholename
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
153 static boolean parse_xdev
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
154 static boolean parse_ignore_race
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
155 static boolean parse_noignore_race
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
156 static boolean parse_warn
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
157 static boolean parse_xtype
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
158 static boolean parse_quit
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
160 boolean parse_print
PARAMS((const struct parser_table
*, char *argv
[], int *arg_ptr
));
163 static boolean insert_type
PARAMS((char **argv
, int *arg_ptr
,
164 const struct parser_table
*entry
,
165 PRED_FUNC which_pred
));
166 static boolean insert_regex
PARAMS((char *argv
[], int *arg_ptr
,
167 const struct parser_table
*entry
,
169 static boolean
insert_fprintf (struct format_val
*vec
,
170 const struct parser_table
*entry
,
174 static struct segment
**make_segment
PARAMS((struct segment
**segment
,
175 char *format
, int len
,
176 int kind
, char format_char
,
177 char aux_format_char
,
178 struct predicate
*pred
));
179 static boolean insert_exec_ok
PARAMS((const char *action
,
180 const struct parser_table
*entry
,
184 static boolean get_comp_type
PARAMS((const char **str
,
185 enum comparison_type
*comp_type
));
186 static boolean get_relative_timestamp
PARAMS((const char *str
,
187 struct time_val
*tval
,
190 const char *overflowmessage
));
191 static boolean get_num
PARAMS((const char *str
,
193 enum comparison_type
*comp_type
));
194 static struct predicate
* insert_num
PARAMS((char *argv
[], int *arg_ptr
,
195 const struct parser_table
*entry
));
196 static void open_output_file (const char *path
, struct format_val
*p
);
197 static void open_stdout (struct format_val
*p
);
198 static boolean
stream_is_tty(FILE *fp
);
199 static boolean parse_noop
PARAMS((const struct parser_table
* entry
,
200 char **argv
, int *arg_ptr
));
202 #define PASTE(x,y) x##y
203 #define STRINGIFY(s) #s
205 #define PARSE_OPTION(what,suffix) \
206 { (ARG_OPTION), (what), PASTE(parse_,suffix), NULL }
208 #define PARSE_POSOPT(what,suffix) \
209 { (ARG_POSITIONAL_OPTION), (what), PASTE(parse_,suffix), NULL }
211 #define PARSE_TEST(what,suffix) \
212 { (ARG_TEST), (what), PASTE(parse_,suffix), PASTE(pred_,suffix) }
214 #define PARSE_TEST_NP(what,suffix) \
215 { (ARG_TEST), (what), PASTE(parse_,suffix), NULL }
217 #define PARSE_ACTION(what,suffix) \
218 { (ARG_ACTION), (what), PASTE(parse_,suffix), PASTE(pred_,suffix) }
220 #define PARSE_ACTION_NP(what,suffix) \
221 { (ARG_ACTION), (what), PASTE(parse_,suffix), NULL }
223 #define PARSE_PUNCTUATION(what,suffix) \
224 { (ARG_PUNCTUATION), (what), PASTE(parse_,suffix), PASTE(pred_,suffix) }
227 /* Predicates we cannot handle in the usual way. If you add an entry
228 * to this table, double-check the switch statement in
229 * pred_sanity_check() to make sure that the new case is being
232 static struct parser_table
const parse_entry_newerXY
=
234 ARG_SPECIAL_PARSE
, "newerXY", parse_newerXY
, pred_newerXY
/* BSD */
237 /* GNU find predicates that are not mentioned in POSIX.2 are marked `GNU'.
238 If they are in some Unix versions of find, they are marked `Unix'. */
240 static struct parser_table
const parse_table
[] =
242 PARSE_PUNCTUATION("!", negate
),
243 PARSE_PUNCTUATION("not", negate
), /* GNU */
244 PARSE_PUNCTUATION("(", openparen
),
245 PARSE_PUNCTUATION(")", closeparen
),
246 PARSE_PUNCTUATION(",", comma
), /* GNU */
247 PARSE_PUNCTUATION("a", and),
248 PARSE_TEST ("amin", amin
), /* GNU */
249 PARSE_PUNCTUATION("and", and), /* GNU */
250 PARSE_TEST ("anewer", anewer
), /* GNU */
251 {ARG_TEST
, "atime", parse_time
, pred_atime
},
252 PARSE_TEST ("cmin", cmin
), /* GNU */
253 PARSE_TEST ("cnewer", cnewer
), /* GNU */
254 {ARG_TEST
, "ctime", parse_time
, pred_ctime
},
255 PARSE_POSOPT ("daystart", daystart
), /* GNU */
256 PARSE_ACTION ("delete", delete), /* GNU, Mac OS, FreeBSD */
257 PARSE_OPTION ("d", d
), /* Mac OS X, FreeBSD, NetBSD, OpenBSD, but deprecated in favour of -depth */
258 PARSE_OPTION ("depth", depth
),
259 PARSE_TEST ("empty", empty
), /* GNU */
260 {ARG_ACTION
, "exec", parse_exec
, pred_exec
}, /* POSIX */
261 {ARG_TEST
, "executable", parse_accesscheck
, pred_executable
}, /* GNU, 4.3.0+ */
262 PARSE_ACTION ("execdir", execdir
), /* *BSD, GNU */
263 PARSE_ACTION ("fls", fls
), /* GNU */
264 PARSE_POSOPT ("follow", follow
), /* GNU, Unix */
265 PARSE_ACTION ("fprint", fprint
), /* GNU */
266 PARSE_ACTION ("fprint0", fprint0
), /* GNU */
267 {ARG_ACTION
, "fprintf", parse_fprintf
, pred_fprintf
}, /* GNU */
268 PARSE_TEST ("fstype", fstype
), /* GNU, Unix */
269 PARSE_TEST ("gid", gid
), /* GNU */
270 PARSE_TEST ("group", group
),
271 PARSE_OPTION ("ignore_readdir_race", ignore_race
), /* GNU */
272 PARSE_TEST ("ilname", ilname
), /* GNU */
273 PARSE_TEST ("iname", iname
), /* GNU */
274 PARSE_TEST ("inum", inum
), /* GNU, Unix */
275 PARSE_TEST ("ipath", ipath
), /* GNU, deprecated in favour of iwholename */
276 PARSE_TEST_NP ("iregex", iregex
), /* GNU */
277 PARSE_TEST_NP ("iwholename", iwholename
), /* GNU */
278 PARSE_TEST ("links", links
),
279 PARSE_TEST ("lname", lname
), /* GNU */
280 PARSE_ACTION ("ls", ls
), /* GNU, Unix */
281 PARSE_OPTION ("maxdepth", maxdepth
), /* GNU */
282 PARSE_OPTION ("mindepth", mindepth
), /* GNU */
283 PARSE_TEST ("mmin", mmin
), /* GNU */
284 PARSE_OPTION ("mount", xdev
), /* Unix */
285 {ARG_TEST
, "mtime", parse_time
, pred_mtime
},
286 PARSE_TEST ("name", name
),
287 #ifdef UNIMPLEMENTED_UNIX
288 PARSE(ARG_UNIMPLEMENTED
, "ncpio", ncpio
), /* Unix */
290 PARSE_TEST ("newer", newer
),
291 {ARG_TEST
, "atime", parse_time
, pred_atime
},
292 PARSE_OPTION ("noleaf", noleaf
), /* GNU */
293 PARSE_TEST ("nogroup", nogroup
),
294 PARSE_TEST ("nouser", nouser
),
295 PARSE_OPTION ("noignore_readdir_race", noignore_race
), /* GNU */
296 PARSE_POSOPT ("nowarn", nowarn
), /* GNU */
297 PARSE_PUNCTUATION("o", or),
298 PARSE_PUNCTUATION("or", or), /* GNU */
299 PARSE_ACTION ("ok", ok
),
300 PARSE_ACTION ("okdir", okdir
), /* GNU (-execdir is BSD) */
301 PARSE_TEST ("path", path
), /* GNU, HP-UX, RMS prefers wholename, but anyway soon POSIX */
302 PARSE_TEST ("perm", perm
),
303 PARSE_ACTION ("print", print
),
304 PARSE_ACTION ("print0", print0
), /* GNU */
305 {ARG_ACTION
, "printf", parse_printf
, NULL
}, /* GNU */
306 PARSE_ACTION ("prune", prune
),
307 PARSE_ACTION ("quit", quit
), /* GNU */
308 {ARG_TEST
, "readable", parse_accesscheck
, pred_readable
}, /* GNU, 4.3.0+ */
309 PARSE_TEST ("regex", regex
), /* GNU */
310 PARSE_OPTION ("regextype", regextype
), /* GNU */
311 PARSE_TEST ("samefile", samefile
), /* GNU */
313 PARSE_OPTION ("show-control-chars", show_control_chars
), /* GNU, 4.3.0+ */
315 PARSE_TEST ("size", size
),
316 PARSE_TEST ("type", type
),
317 PARSE_TEST ("uid", uid
), /* GNU */
318 PARSE_TEST ("used", used
), /* GNU */
319 PARSE_TEST ("user", user
),
320 PARSE_OPTION ("warn", warn
), /* GNU */
321 PARSE_TEST_NP ("wholename", wholename
), /* GNU, replaced -path, but anyway -path will soon be in POSIX */
322 {ARG_TEST
, "writable", parse_accesscheck
, pred_writable
}, /* GNU, 4.3.0+ */
323 PARSE_OPTION ("xdev", xdev
),
324 PARSE_TEST ("xtype", xtype
), /* GNU */
325 #ifdef UNIMPLEMENTED_UNIX
326 /* It's pretty ugly for find to know about archive formats.
327 Plus what it could do with cpio archives is very limited.
328 Better to leave it out. */
329 PARSE(ARG_UNIMPLEMENTED
, "cpio", cpio
), /* Unix */
331 /* gnulib's stdbool.h might have made true and false into macros,
332 * so we can't leave named 'true' and 'false' tokens, so we have
333 * to expeant the relevant entries longhand.
335 {ARG_TEST
, "false", parse_false
, pred_false
}, /* GNU */
336 {ARG_TEST
, "true", parse_true
, pred_true
}, /* GNU */
337 {ARG_NOOP
, "noop", NULL
, pred_true
}, /* GNU, internal use only */
339 /* Various other cases that don't fit neatly into our macro scheme. */
340 {ARG_TEST
, "help", parse_help
, NULL
}, /* GNU */
341 {ARG_TEST
, "-help", parse_help
, NULL
}, /* GNU */
342 {ARG_TEST
, "version", parse_version
, NULL
}, /* GNU */
343 {ARG_TEST
, "-version", parse_version
, NULL
}, /* GNU */
348 static const char *first_nonoption_arg
= NULL
;
349 static const struct parser_table
*noop
= NULL
;
352 static const struct parser_table
*
358 for (i
= 0; parse_table
[i
].parser_name
!= 0; i
++)
360 if (ARG_NOOP
==parse_table
[i
].type
)
362 noop
= &(parse_table
[i
]);
371 get_stat_Ytime(const struct stat
*p
,
373 struct timespec
*ret
)
378 *ret
= get_stat_atime(p
);
381 *ret
= get_stat_birthtime(p
);
382 return (ret
->tv_nsec
>= 0);
384 *ret
= get_stat_ctime(p
);
387 *ret
= get_stat_mtime(p
);
396 set_follow_state(enum SymlinkOption opt
)
398 if (options
.debug_options
& DebugStat
)
400 /* For DebugStat, the choice is made at runtime within debug_stat()
401 * by checking the contents of the symlink_handling variable.
403 options
.xstat
= debug_stat
;
409 case SYMLINK_ALWAYS_DEREF
: /* -L */
410 options
.xstat
= optionl_stat
;
411 options
.no_leaf_check
= true;
414 case SYMLINK_NEVER_DEREF
: /* -P (default) */
415 options
.xstat
= optionp_stat
;
416 /* Can't turn no_leaf_check off because the user might have specified
421 case SYMLINK_DEREF_ARGSONLY
: /* -H */
422 options
.xstat
= optionh_stat
;
423 options
.no_leaf_check
= true;
426 options
.symlink_handling
= opt
;
431 parse_begin_user_args (char **args
, int argno
,
432 const struct predicate
*last
,
433 const struct predicate
*predicates
)
439 first_nonoption_arg
= NULL
;
443 parse_end_user_args (char **args
, int argno
,
444 const struct predicate
*last
,
445 const struct predicate
*predicates
)
455 /* Check that it is legal to fid the given primary in its
456 * position and return it.
458 const struct parser_table
*
459 found_parser(const char *original_arg
, const struct parser_table
*entry
)
461 /* If this is an option, but we have already had a
462 * non-option argument, the user may be under the
463 * impression that the behaviour of the option
464 * argument is conditional on some preceding
465 * tests. This might typically be the case with,
466 * for example, -maxdepth.
468 * The options -daystart and -follow are exempt
469 * from this treatment, since their positioning
470 * in the command line does have an effect on
471 * subsequent tests but not previous ones. That
472 * might be intentional on the part of the user.
474 if (entry
->type
!= ARG_POSITIONAL_OPTION
)
476 /* Something other than -follow/-daystart.
477 * If this is an option, check if it followed
478 * a non-option and if so, issue a warning.
480 if (entry
->type
== ARG_OPTION
)
482 if ((first_nonoption_arg
!= NULL
)
483 && options
.warnings
)
485 /* option which follows a non-option */
487 _("warning: you have specified the %s "
488 "option after a non-option argument %s, "
489 "but options are not positional (%s affects "
490 "tests specified before it as well as those "
491 "specified after it). Please specify options "
492 "before other arguments.\n"),
500 /* Not an option or a positional option,
501 * so remember we've seen it in order to
502 * use it in a possible future warning message.
504 if (first_nonoption_arg
== NULL
)
506 first_nonoption_arg
= original_arg
;
515 /* Return a pointer to the parser function to invoke for predicate
517 Return NULL if SEARCH_NAME is not a valid predicate name. */
519 const struct parser_table
*
520 find_parser (char *search_name
)
523 const char *original_arg
= search_name
;
525 /* Ugh. Special case -newerXY. */
526 if (0 == strncmp("-newer", search_name
, 6)
527 && (8 == strlen(search_name
)))
529 return found_parser(original_arg
, &parse_entry_newerXY
);
532 if (*search_name
== '-')
535 for (i
= 0; parse_table
[i
].parser_name
!= 0; i
++)
537 if (strcmp (parse_table
[i
].parser_name
, search_name
) == 0)
539 return found_parser(original_arg
, &parse_table
[i
]);
546 estimate_file_age_success_rate(float num_days
)
550 /* Assume 1% of files have timestamps in the future */
553 else if (num_days
< 1)
555 /* Assume 30% of files have timestamps today */
558 else if (num_days
> 100)
560 /* Assume 30% of files are very old */
565 /* Assume 39% of files are between 1 and 100 days old. */
571 estimate_timestamp_success_rate(time_t when
)
573 int num_days
= (options
.cur_day_start
- when
) / 86400;
574 return estimate_file_age_success_rate(num_days
);
577 /* Collect an argument from the argument list, or
581 collect_arg(char **argv
, int *arg_ptr
, const char **collected_arg
)
583 if ((argv
== NULL
) || (argv
[*arg_ptr
] == NULL
))
585 *collected_arg
= NULL
;
590 *collected_arg
= argv
[*arg_ptr
];
597 collect_arg_stat_info(char **argv
, int *arg_ptr
, struct stat
*p
)
599 const char *filename
;
600 if (collect_arg(argv
, arg_ptr
, &filename
))
602 if (0 == (options
.xstat
)(filename
, p
))
608 fatal_file_error(filename
);
617 /* The parsers are responsible to continue scanning ARGV for
618 their arguments. Each parser knows what is and isn't
621 ARGV is the argument array.
622 *ARG_PTR is the index to start at in ARGV,
623 updated to point beyond the last element consumed.
625 The predicate structure is updated with the new information. */
629 parse_and (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
631 struct predicate
*our_pred
;
636 our_pred
= get_new_pred (entry
);
637 our_pred
->pred_func
= pred_and
;
638 our_pred
->p_type
= BI_OP
;
639 our_pred
->p_prec
= AND_PREC
;
640 our_pred
->need_stat
= our_pred
->need_type
= false;
645 parse_anewer (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
647 struct stat stat_newer
;
649 set_stat_placeholders(&stat_newer
);
650 if (collect_arg_stat_info(argv
, arg_ptr
, &stat_newer
))
652 struct predicate
*our_pred
= insert_primary (entry
);
653 our_pred
->args
.reftime
.xval
= XVAL_ATIME
;
654 our_pred
->args
.reftime
.ts
= get_stat_mtime(&stat_newer
);
655 our_pred
->args
.reftime
.kind
= COMP_GT
;
656 our_pred
->est_success_rate
= estimate_timestamp_success_rate(stat_newer
.st_mtime
);
663 parse_closeparen (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
665 struct predicate
*our_pred
;
670 our_pred
= get_new_pred (entry
);
671 our_pred
->pred_func
= pred_closeparen
;
672 our_pred
->p_type
= CLOSE_PAREN
;
673 our_pred
->p_prec
= NO_PREC
;
674 our_pred
->need_stat
= our_pred
->need_type
= false;
679 parse_cnewer (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
681 struct stat stat_newer
;
683 set_stat_placeholders(&stat_newer
);
684 if (collect_arg_stat_info(argv
, arg_ptr
, &stat_newer
))
686 struct predicate
*our_pred
= insert_primary (entry
);
687 our_pred
->args
.reftime
.xval
= XVAL_CTIME
; /* like -newercm */
688 our_pred
->args
.reftime
.ts
= get_stat_mtime(&stat_newer
);
689 our_pred
->args
.reftime
.kind
= COMP_GT
;
690 our_pred
->est_success_rate
= estimate_timestamp_success_rate(stat_newer
.st_mtime
);
697 parse_comma (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
699 struct predicate
*our_pred
;
704 our_pred
= get_new_pred (entry
);
705 our_pred
->pred_func
= pred_comma
;
706 our_pred
->p_type
= BI_OP
;
707 our_pred
->p_prec
= COMMA_PREC
;
708 our_pred
->need_stat
= our_pred
->need_type
= false;
709 our_pred
->est_success_rate
= 1.0f
;
714 parse_daystart (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
722 if (options
.full_days
== false)
724 options
.cur_day_start
+= DAYSECS
;
725 local
= localtime (&options
.cur_day_start
);
726 options
.cur_day_start
-= (local
727 ? (local
->tm_sec
+ local
->tm_min
* 60
728 + local
->tm_hour
* 3600)
729 : options
.cur_day_start
% DAYSECS
);
730 options
.full_days
= true;
736 parse_delete (const struct parser_table
* entry
, char *argv
[], int *arg_ptr
)
738 struct predicate
*our_pred
;
742 our_pred
= insert_primary (entry
);
743 our_pred
->side_effects
= our_pred
->no_default_print
= true;
744 /* -delete implies -depth */
745 options
.do_dir_first
= false;
747 /* We do not need stat information because we check for the case
748 * (errno==EISDIR) in pred_delete.
750 our_pred
->need_stat
= our_pred
->need_type
= false;
752 our_pred
->est_success_rate
= 1.0f
;
757 parse_depth (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
762 options
.do_dir_first
= false;
763 return parse_noop(entry
, argv
, arg_ptr
);
767 parse_d (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
769 if (options
.warnings
)
772 _("warning: the -d option is deprecated; please use "
773 "-depth instead, because the latter is a "
774 "POSIX-compliant feature."));
776 return parse_depth(entry
, argv
, arg_ptr
);
780 parse_empty (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
782 struct predicate
*our_pred
;
786 our_pred
= insert_primary (entry
);
787 our_pred
->est_success_rate
= 0.01f
; /* assume 1% of files are empty. */
792 parse_exec (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
794 return insert_exec_ok ("-exec", entry
, get_start_dirfd(), argv
, arg_ptr
);
798 parse_execdir (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
800 return insert_exec_ok ("-execdir", entry
, -1, argv
, arg_ptr
);
804 parse_false (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
806 struct predicate
*our_pred
;
811 our_pred
= insert_primary (entry
);
812 our_pred
->need_stat
= our_pred
->need_type
= false;
813 our_pred
->side_effects
= our_pred
->no_default_print
= false;
814 our_pred
->est_success_rate
= 0.0f
;
819 insert_fls (const struct parser_table
* entry
, const char *filename
)
821 struct predicate
*our_pred
= insert_primary (entry
);
823 open_output_file (filename
, &our_pred
->args
.printf_vec
);
825 open_stdout (&our_pred
->args
.printf_vec
);
826 our_pred
->side_effects
= our_pred
->no_default_print
= true;
827 our_pred
->est_success_rate
= 1.0f
;
833 parse_fls (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
835 const char *filename
;
836 return collect_arg(argv
, arg_ptr
, &filename
)
837 && insert_fls(entry
, filename
);
841 parse_follow (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
843 set_follow_state(SYMLINK_ALWAYS_DEREF
);
844 return parse_noop(entry
, argv
, arg_ptr
);
848 parse_fprint (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
850 struct predicate
*our_pred
;
851 const char *filename
;
852 if (collect_arg(argv
, arg_ptr
, &filename
))
854 our_pred
= insert_primary (entry
);
855 open_output_file (filename
, &our_pred
->args
.printf_vec
);
856 our_pred
->side_effects
= our_pred
->no_default_print
= true;
857 our_pred
->need_stat
= our_pred
->need_type
= false;
858 our_pred
->est_success_rate
= 1.0f
;
868 insert_fprint(const struct parser_table
* entry
, const char *filename
)
870 struct predicate
*our_pred
= insert_primary (entry
);
872 open_output_file (filename
, &our_pred
->args
.printf_vec
);
874 open_stdout (&our_pred
->args
.printf_vec
);
875 our_pred
->side_effects
= our_pred
->no_default_print
= true;
876 our_pred
->need_stat
= our_pred
->need_type
= false;
877 our_pred
->est_success_rate
= 1.0f
;
883 parse_fprint0 (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
885 const char *filename
;
886 if (collect_arg(argv
, arg_ptr
, &filename
))
887 return insert_fprint(entry
, filename
);
892 static float estimate_fstype_success_rate(const char *fsname
)
894 struct stat dir_stat
;
895 const char *dir
= "/";
896 if (0 == stat(dir
, &dir_stat
))
898 const char *fstype
= filesystem_type(&dir_stat
, dir
);
899 /* Assume most files are on the same file system type as the root fs. */
900 if (0 == strcmp(fsname
, fstype
))
910 parse_fstype (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
912 const char *typename
;
913 if (collect_arg(argv
, arg_ptr
, &typename
))
915 struct predicate
*our_pred
= insert_primary (entry
);
916 our_pred
->args
.str
= typename
;
918 /* This is an expensive operation, so although there are
919 * circumstances where it is selective, we ignore this fact
920 * because we probably don't want to promote this test to the
923 our_pred
->est_success_rate
= estimate_fstype_success_rate(typename
);
933 parse_gid (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
935 struct predicate
*p
= insert_num (argv
, arg_ptr
, entry
);
938 p
->est_success_rate
= (p
->args
.numinfo
.l_val
< 100) ? 0.99 : 0.2;
949 safe_atoi (const char *s
)
955 lval
= strtol(s
, &end
, 10);
956 if ( (LONG_MAX
== lval
) || (LONG_MIN
== lval
) )
958 /* max/min possible value, or an error. */
961 /* too big, or too small. */
962 error(1, errno
, "%s", s
);
966 /* not a valid number */
967 error(1, errno
, "%s", s
);
969 /* Otherwise, we do a range chack against INT_MAX and INT_MIN
974 if (lval
> INT_MAX
|| lval
< INT_MIN
)
976 /* The number was in range for long, but not int. */
978 error(1, errno
, "%s", s
);
982 error(1, errno
, "Unexpected suffix %s on %s",
983 quotearg_n_style(0, options
.err_quoting_style
, end
),
984 quotearg_n_style(1, options
.err_quoting_style
, s
));
988 error(1, errno
, "Expected an integer: %s",
989 quotearg_n_style(0, options
.err_quoting_style
, s
));
996 parse_group (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
998 const char *groupname
;
1000 if (collect_arg(argv
, arg_ptr
, &groupname
))
1003 struct predicate
*our_pred
;
1004 struct group
*cur_gr
= getgrnam(groupname
);
1008 gid
= cur_gr
->gr_gid
;
1012 const int gid_len
= strspn (groupname
, "0123456789");
1015 if (groupname
[gid_len
] == 0)
1017 gid
= safe_atoi (groupname
);
1021 /* XXX: no test in test suite for this */
1022 error(1, 0, _("%s is not the name of an existing group and"
1023 " it does not look like a numeric group ID "
1024 "because it has the unexpected suffix %s"),
1025 quotearg_n_style(0, options
.err_quoting_style
, groupname
),
1026 quotearg_n_style(1, options
.err_quoting_style
, groupname
+gid_len
));
1034 /* XXX: no test in test suite for this */
1035 error(1, 0, _("%s is not the name of an existing group"),
1036 quotearg_n_style(0, options
.err_quoting_style
, groupname
));
1040 error(1, 0, _("argument to -group is empty, but should be a group name"));
1045 our_pred
= insert_primary (entry
);
1046 our_pred
->args
.gid
= gid
;
1047 our_pred
->est_success_rate
= (our_pred
->args
.numinfo
.l_val
< 100) ? 0.99 : 0.2;
1054 parse_help (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1060 usage(stdout
, 0, NULL
);
1062 default path is the current directory; default expression is -print\n\
1063 expression may consist of: operators, options, tests, and actions:\n"));
1065 operators (decreasing precedence; -and is implicit where no others are given):\n\
1066 ( EXPR ) ! EXPR -not EXPR EXPR1 -a EXPR2 EXPR1 -and EXPR2\n\
1067 EXPR1 -o EXPR2 EXPR1 -or EXPR2 EXPR1 , EXPR2\n"));
1069 positional options (always true): -daystart -follow -regextype\n\n\
1070 normal options (always true, specified before other expressions):\n\
1071 -depth --help -maxdepth LEVELS -mindepth LEVELS -mount -noleaf\n\
1072 --version -xdev -ignore_readdir_race -noignore_readdir_race\n"));
1074 tests (N can be +N or -N or N): -amin N -anewer FILE -atime N -cmin N\n\
1075 -cnewer FILE -ctime N -empty -false -fstype TYPE -gid N -group NAME\n\
1076 -ilname PATTERN -iname PATTERN -inum N -iwholename PATTERN -iregex PATTERN\n\
1077 -links N -lname PATTERN -mmin N -mtime N -name PATTERN -newer FILE"));
1079 -nouser -nogroup -path PATTERN -perm [+-]MODE -regex PATTERN\n\
1080 -readable -writable -executable\n\
1081 -wholename PATTERN -size N[bcwkMG] -true -type [bcdpflsD] -uid N\n\
1082 -used N -user NAME -xtype [bcdpfls]\n"));
1084 actions: -delete -print0 -printf FORMAT -fprintf FILE FORMAT -print \n\
1085 -fprint0 FILE -fprint FILE -ls -fls FILE -prune -quit\n\
1086 -exec COMMAND ; -exec COMMAND {} + -ok COMMAND ;\n\
1087 -execdir COMMAND ; -execdir COMMAND {} + -okdir COMMAND ;\n\
1089 puts (_("Report (and track progress on fixing) bugs via the findutils bug-reporting\n\
1090 page at http://savannah.gnu.org/ or, if you have no web access, by sending\n\
1091 email to <bug-findutils@gnu.org>."));
1096 estimate_pattern_match_rate(const char *pattern
, int is_regex
)
1098 if (strpbrk(pattern
, "*?[") || (is_regex
&& strpbrk(pattern
, ".")))
1100 /* A wildcard; assume the pattern matches most files. */
1110 parse_ilname (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1113 if (collect_arg(argv
, arg_ptr
, &name
))
1115 struct predicate
*our_pred
= insert_primary (entry
);
1116 our_pred
->args
.str
= name
;
1117 /* Use the generic glob pattern estimator to figure out how many
1118 * links will match, but bear in mind that most files won't be links.
1120 our_pred
->est_success_rate
= 0.1 * estimate_pattern_match_rate(name
, 0);
1130 /* sanity check the fnmatch() function to make sure that case folding
1131 * is supported (as opposed to just having the flag ignored).
1134 fnmatch_sanitycheck(void)
1136 static boolean checked
= false;
1139 if (0 != fnmatch("foo", "foo", 0)
1140 || 0 == fnmatch("Foo", "foo", 0)
1141 || 0 != fnmatch("Foo", "foo", FNM_CASEFOLD
))
1143 error (1, 0, _("sanity check of the fnmatch() library function failed."));
1153 check_name_arg(const char *pred
, const char *arg
)
1155 if (options
.warnings
&& strchr(arg
, '/'))
1157 error(0, 0,_("warning: Unix filenames usually don't contain slashes "
1158 "(though pathnames do). That means that '%s %s' will "
1159 "probably evaluate to false all the time on this system. "
1160 "You might find the '-wholename' test more useful, or "
1161 "perhaps '-samefile'. Alternatively, if you are using "
1162 "GNU grep, you could "
1163 "use 'find ... -print0 | grep -FzZ %s'."),
1165 safely_quote_err_filename(0, arg
),
1166 safely_quote_err_filename(1, arg
));
1168 return true; /* allow it anyway */
1174 parse_iname (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1177 fnmatch_sanitycheck();
1178 if (collect_arg(argv
, arg_ptr
, &name
))
1180 if (check_name_arg("-iname", name
))
1182 struct predicate
*our_pred
= insert_primary (entry
);
1183 our_pred
->need_stat
= our_pred
->need_type
= false;
1184 our_pred
->args
.str
= name
;
1185 our_pred
->est_success_rate
= estimate_pattern_match_rate(name
, 0);
1193 parse_inum (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1195 struct predicate
*p
= insert_num (argv
, arg_ptr
, entry
);
1198 /* inode number is exact match only, so very low proportions of
1201 p
->est_success_rate
= 1e-6;
1210 /* -ipath is deprecated (at RMS's request) in favour of
1211 * -iwholename. See the node "GNU Manuals" in standards.texi
1212 * for the rationale for this (basically, GNU prefers the use
1213 * of the phrase "file name" to "path name"
1216 parse_ipath (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1220 fnmatch_sanitycheck ();
1221 if (collect_arg (argv
, arg_ptr
, &name
))
1223 struct predicate
*our_pred
= insert_primary_withpred (entry
, pred_ipath
);
1224 our_pred
->need_stat
= our_pred
->need_type
= false;
1225 our_pred
->args
.str
= name
;
1226 our_pred
->est_success_rate
= estimate_pattern_match_rate (name
, 0);
1233 parse_iwholename (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1235 return parse_ipath (entry
, argv
, arg_ptr
);
1239 parse_iregex (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1241 return insert_regex (argv
, arg_ptr
, entry
, RE_ICASE
|options
.regex_options
);
1245 parse_links (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1247 struct predicate
*p
= insert_num (argv
, arg_ptr
, entry
);
1250 if (p
->args
.numinfo
.l_val
== 1)
1251 p
->est_success_rate
= 0.99;
1252 else if (p
->args
.numinfo
.l_val
== 2)
1253 p
->est_success_rate
= 0.01;
1255 p
->est_success_rate
= 1e-3;
1265 parse_lname (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1268 fnmatch_sanitycheck();
1269 if (collect_arg(argv
, arg_ptr
, &name
))
1271 struct predicate
*our_pred
= insert_primary (entry
);
1272 our_pred
->args
.str
= name
;
1273 our_pred
->est_success_rate
= 0.1 * estimate_pattern_match_rate(name
, 0);
1280 parse_ls (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1284 return insert_fls(entry
, NULL
);
1288 insert_depthspec(const struct parser_table
* entry
, char **argv
, int *arg_ptr
,
1291 const char *depthstr
;
1293 const char *predicate
= argv
[(*arg_ptr
)-1];
1294 if (collect_arg(argv
, arg_ptr
, &depthstr
))
1296 depth_len
= strspn (depthstr
, "0123456789");
1297 if ((depth_len
> 0) && (depthstr
[depth_len
] == 0))
1299 (*limitptr
) = safe_atoi (depthstr
);
1302 return parse_noop(entry
, argv
, arg_ptr
);
1305 error(1, 0, _("Expected a positive decimal integer argument to %s, but got %s"),
1307 quotearg_n_style(0, options
.err_quoting_style
, depthstr
));
1310 /* missing argument */
1316 parse_maxdepth (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1318 return insert_depthspec(entry
, argv
, arg_ptr
, &options
.maxdepth
);
1322 parse_mindepth (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1324 return insert_depthspec(entry
, argv
, arg_ptr
, &options
.mindepth
);
1329 do_parse_xmin (const struct parser_table
* entry
,
1334 const char *minutes
;
1336 if (collect_arg(argv
, arg_ptr
, &minutes
))
1338 struct time_val tval
;
1340 if (get_relative_timestamp(minutes
, &tval
,
1341 options
.cur_day_start
+ DAYSECS
, 60,
1342 "arithmetic overflow while converting %s "
1343 "minutes to a number of seconds"))
1345 struct predicate
*our_pred
= insert_primary (entry
);
1346 our_pred
->args
.reftime
= tval
;
1347 our_pred
->est_success_rate
= estimate_timestamp_success_rate(tval
.ts
.tv_sec
);
1354 parse_amin (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1356 return do_parse_xmin(entry
, argv
, arg_ptr
, XVAL_ATIME
);
1360 parse_cmin (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1362 return do_parse_xmin(entry
, argv
, arg_ptr
, XVAL_CTIME
);
1367 parse_mmin (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1369 return do_parse_xmin(entry
, argv
, arg_ptr
, XVAL_MTIME
);
1373 parse_name (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1376 if (collect_arg(argv
, arg_ptr
, &name
))
1378 fnmatch_sanitycheck();
1379 if (check_name_arg("-name", name
))
1381 struct predicate
*our_pred
= insert_primary (entry
);
1382 our_pred
->need_stat
= our_pred
->need_type
= false;
1383 our_pred
->args
.str
= name
;
1384 our_pred
->est_success_rate
= estimate_pattern_match_rate(name
, 0);
1392 parse_negate (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1394 struct predicate
*our_pred
;
1399 our_pred
= get_new_pred_chk_op (entry
);
1400 our_pred
->pred_func
= pred_negate
;
1401 our_pred
->p_type
= UNI_OP
;
1402 our_pred
->p_prec
= NEGATE_PREC
;
1403 our_pred
->need_stat
= our_pred
->need_type
= false;
1408 parse_newer (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1410 struct predicate
*our_pred
;
1411 struct stat stat_newer
;
1413 set_stat_placeholders(&stat_newer
);
1414 if (collect_arg_stat_info(argv
, arg_ptr
, &stat_newer
))
1416 our_pred
= insert_primary (entry
);
1417 our_pred
->args
.reftime
.ts
= get_stat_mtime(&stat_newer
);
1418 our_pred
->args
.reftime
.xval
= XVAL_MTIME
;
1419 our_pred
->args
.reftime
.kind
= COMP_GT
;
1420 our_pred
->est_success_rate
= estimate_timestamp_success_rate(stat_newer
.st_mtime
);
1428 parse_newerXY (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1433 if ((argv
== NULL
) || (argv
[*arg_ptr
] == NULL
))
1437 else if (8u != strlen(argv
[*arg_ptr
]))
1444 const char validchars
[] = "aBcmt";
1446 assert (0 == strncmp("-newer", argv
[*arg_ptr
], 6));
1447 x
= argv
[*arg_ptr
][6];
1448 y
= argv
[*arg_ptr
][7];
1451 #if !defined(HAVE_STRUCT_STAT_ST_BIRTHTIME) && !defined(HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC) && !defined(HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC)
1452 if ('B' == x
|| 'B' == y
)
1455 _("This system does not provide a way to find the birth time of a file."));
1460 /* -newertY (for any Y) is invalid. */
1462 || 0 == strchr(validchars
, x
)
1463 || 0 == strchr( validchars
, y
))
1469 struct predicate
*our_pred
;
1471 /* Because this item is ARG_SPECIAL_PARSE, we have to advance arg_ptr
1472 * past the test name (for most other tests, this is already done)
1476 our_pred
= insert_primary (entry
);
1482 our_pred
->args
.reftime
.xval
= XVAL_ATIME
;
1485 our_pred
->args
.reftime
.xval
= XVAL_BIRTHTIME
;
1488 our_pred
->args
.reftime
.xval
= XVAL_CTIME
;
1491 our_pred
->args
.reftime
.xval
= XVAL_MTIME
;
1494 assert (strchr(validchars
, x
));
1500 if (!get_date(&our_pred
->args
.reftime
.ts
,
1502 &options
.start_time
))
1505 _("I cannot figure out how to interpret %s as a date or time"),
1506 quotearg_n_style(0, options
.err_quoting_style
, argv
[*arg_ptr
]));
1511 struct stat stat_newer
;
1513 /* Stat the named file. */
1514 set_stat_placeholders(&stat_newer
);
1515 if ((*options
.xstat
) (argv
[*arg_ptr
], &stat_newer
))
1516 fatal_file_error(argv
[*arg_ptr
]);
1518 if (!get_stat_Ytime(&stat_newer
, y
, &our_pred
->args
.reftime
.ts
))
1520 /* We cannot extract a timestamp from the struct stat. */
1521 error(1, 0, _("Cannot obtain birth time of file %s"),
1522 safely_quote_err_filename(0, argv
[*arg_ptr
]));
1525 our_pred
->args
.reftime
.kind
= COMP_GT
;
1526 our_pred
->est_success_rate
= estimate_timestamp_success_rate(our_pred
->args
.reftime
.ts
.tv_sec
);
1529 assert (our_pred
->pred_func
!= NULL
);
1530 assert (our_pred
->pred_func
== pred_newerXY
);
1531 assert (our_pred
->need_stat
);
1539 parse_noleaf (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1541 options
.no_leaf_check
= true;
1542 return parse_noop(entry
, argv
, arg_ptr
);
1546 /* Arbitrary amount by which to increase size
1547 of `uid_unused' and `gid_unused'. */
1548 #define ALLOC_STEP 2048
1550 /* Boolean: if uid_unused[n] is nonzero, then UID n has no passwd entry. */
1551 char *uid_unused
= NULL
;
1553 /* Number of elements in `uid_unused'. */
1554 unsigned uid_allocated
;
1556 /* Similar for GIDs and group entries. */
1557 char *gid_unused
= NULL
;
1558 unsigned gid_allocated
;
1562 parse_nogroup (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1564 struct predicate
*our_pred
;
1569 our_pred
= insert_primary (entry
);
1570 our_pred
->est_success_rate
= 1e-4;
1572 if (gid_unused
== NULL
)
1576 gid_allocated
= ALLOC_STEP
;
1577 gid_unused
= xmalloc (gid_allocated
);
1578 memset (gid_unused
, 1, gid_allocated
);
1580 while ((gr
= getgrent ()) != NULL
)
1582 if ((unsigned) gr
->gr_gid
>= gid_allocated
)
1584 unsigned new_allocated
= (unsigned) gr
->gr_gid
+ ALLOC_STEP
;
1585 gid_unused
= xrealloc (gid_unused
, new_allocated
);
1586 memset (gid_unused
+ gid_allocated
, 1,
1587 new_allocated
- gid_allocated
);
1588 gid_allocated
= new_allocated
;
1590 gid_unused
[(unsigned) gr
->gr_gid
] = 0;
1599 parse_nouser (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1601 struct predicate
*our_pred
;
1606 our_pred
= insert_primary (entry
);
1607 our_pred
->est_success_rate
= 1e-3;
1609 if (uid_unused
== NULL
)
1613 uid_allocated
= ALLOC_STEP
;
1614 uid_unused
= xmalloc (uid_allocated
);
1615 memset (uid_unused
, 1, uid_allocated
);
1617 while ((pw
= getpwent ()) != NULL
)
1619 if ((unsigned) pw
->pw_uid
>= uid_allocated
)
1621 unsigned new_allocated
= (unsigned) pw
->pw_uid
+ ALLOC_STEP
;
1622 uid_unused
= xrealloc (uid_unused
, new_allocated
);
1623 memset (uid_unused
+ uid_allocated
, 1,
1624 new_allocated
- uid_allocated
);
1625 uid_allocated
= new_allocated
;
1627 uid_unused
[(unsigned) pw
->pw_uid
] = 0;
1636 parse_nowarn (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1638 options
.warnings
= false;
1639 return parse_noop(entry
, argv
, arg_ptr
);
1643 parse_ok (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1645 return insert_exec_ok ("-ok", entry
, get_start_dirfd(), argv
, arg_ptr
);
1649 parse_okdir (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1651 return insert_exec_ok ("-okdir", entry
, -1, argv
, arg_ptr
);
1655 parse_openparen (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1657 struct predicate
*our_pred
;
1662 our_pred
= get_new_pred_chk_op (entry
);
1663 our_pred
->pred_func
= pred_openparen
;
1664 our_pred
->p_type
= OPEN_PAREN
;
1665 our_pred
->p_prec
= NO_PREC
;
1666 our_pred
->need_stat
= our_pred
->need_type
= false;
1671 parse_or (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1673 struct predicate
*our_pred
;
1678 our_pred
= get_new_pred (entry
);
1679 our_pred
->pred_func
= pred_or
;
1680 our_pred
->p_type
= BI_OP
;
1681 our_pred
->p_prec
= OR_PREC
;
1682 our_pred
->need_stat
= our_pred
->need_type
= false;
1686 /* For some time, -path was deprecated (at RMS's request) in favour of
1687 * -iwholename. See the node "GNU Manuals" in standards.texi for the
1688 * rationale for this (basically, GNU prefers the use of the phrase
1689 * "file name" to "path name".
1691 * We do not issue a warning that this usage is deprecated
1693 * (a) HPUX find supports this predicate also and
1694 * (b) it will soon be in POSIX anyway.
1697 parse_path (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1700 if (collect_arg(argv
, arg_ptr
, &name
))
1702 struct predicate
*our_pred
= insert_primary_withpred (entry
, pred_path
);
1703 our_pred
->need_stat
= our_pred
->need_type
= false;
1704 our_pred
->args
.str
= name
;
1705 our_pred
->est_success_rate
= estimate_pattern_match_rate (name
, 0);
1712 parse_wholename (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1714 return parse_path (entry
, argv
, arg_ptr
);
1718 parse_perm (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1723 boolean havekind
= false;
1724 enum permissions_type kind
= PERM_EXACT
;
1725 struct mode_change
*change
= NULL
;
1726 struct predicate
*our_pred
;
1727 const char *perm_expr
;
1729 if (!collect_arg(argv
, arg_ptr
, &perm_expr
))
1732 switch (perm_expr
[0])
1736 kind
= PERM_AT_LEAST
;
1742 change
= mode_compile (perm_expr
);
1745 /* Most likely the caller is an old script that is still
1746 * using the obsolete GNU syntax '-perm +MODE'. This old
1747 * syntax was withdrawn in favor of '-perm /MODE' because
1748 * it is incompatible with POSIX in some cases, but we
1749 * still support uses of it that are not incompatible with
1758 /* This is a POSIX-compatible usage */
1766 case '/': /* GNU extension */
1774 /* For example, '-perm 0644', which is valid and matches
1775 * only files whose mode is exactly 0644.
1786 change
= mode_compile (perm_expr
+ mode_start
);
1788 error (1, 0, _("invalid mode %s"),
1789 quotearg_n_style(0, options
.err_quoting_style
, perm_expr
));
1791 perm_val
[0] = mode_adjust (0, false, 0, change
, NULL
);
1792 perm_val
[1] = mode_adjust (0, true, 0, change
, NULL
);
1795 if (('/' == perm_expr
[0]) && (0 == perm_val
[0]) && (0 == perm_val
[1]))
1797 /* The meaning of -perm /000 will change in the future. It
1798 * currently matches no files, but like -perm -000 it should
1801 * Starting in 2005, we used to issue a warning message
1802 * informing the user that the behaviour would change in the
1803 * future. We have now changed the behaviour and issue a
1804 * warning message that the behaviour recently changed.
1807 _("warning: you have specified a mode pattern %s (which is "
1808 "equivalent to /000). The meaning of -perm /000 has now been "
1809 "changed to be consistent with -perm -000; that is, while it "
1810 "used to match no files, it now matches all files."),
1813 kind
= PERM_AT_LEAST
;
1816 /* The "magic" number below is just the fraction of files on my
1817 * own system that "-type l -xtype l" fails for (i.e. unbroken symlinks).
1818 * Actual totals are 1472 and 1073833.
1820 rate
= 0.9986; /* probably matches anything but a broken symlink */
1823 our_pred
= insert_primary (entry
);
1824 our_pred
->est_success_rate
= rate
;
1827 our_pred
->args
.perm
.kind
= kind
;
1832 switch (perm_expr
[0])
1835 our_pred
->args
.perm
.kind
= PERM_AT_LEAST
;
1838 our_pred
->args
.perm
.kind
= PERM_ANY
;
1841 our_pred
->args
.perm
.kind
= PERM_EXACT
;
1845 memcpy (our_pred
->args
.perm
.val
, perm_val
, sizeof perm_val
);
1850 parse_print (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1852 struct predicate
*our_pred
;
1857 our_pred
= insert_primary (entry
);
1858 /* -print has the side effect of printing. This prevents us
1859 from doing undesired multiple printing when the user has
1860 already specified -print. */
1861 our_pred
->side_effects
= our_pred
->no_default_print
= true;
1862 our_pred
->need_stat
= our_pred
->need_type
= false;
1863 open_stdout(&our_pred
->args
.printf_vec
);
1868 parse_print0 (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1870 return insert_fprint(entry
, NULL
);
1874 parse_printf (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1877 if (collect_arg(argv
, arg_ptr
, &format
))
1879 struct format_val fmt
;
1881 return insert_fprintf (&fmt
, entry
, pred_fprintf
, format
);
1887 parse_fprintf (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1889 const char *format
, *filename
;
1890 if (collect_arg(argv
, arg_ptr
, &filename
))
1892 if (collect_arg(argv
, arg_ptr
, &format
))
1894 struct format_val fmt
;
1895 open_output_file (filename
, &fmt
);
1896 return insert_fprintf (&fmt
, entry
, pred_fprintf
, format
);
1903 parse_prune (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1905 struct predicate
*our_pred
;
1910 our_pred
= insert_primary (entry
);
1911 our_pred
->need_stat
= our_pred
->need_type
= false;
1912 /* -prune has a side effect that it does not descend into
1913 the current directory. */
1914 our_pred
->side_effects
= true;
1915 our_pred
->no_default_print
= false;
1920 parse_quit (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1922 struct predicate
*our_pred
= insert_primary (entry
);
1925 our_pred
->need_stat
= our_pred
->need_type
= false;
1926 our_pred
->side_effects
= true; /* Exiting is a side effect... */
1927 our_pred
->no_default_print
= false; /* Don't inhibit the default print, though. */
1928 our_pred
->est_success_rate
= 1.0f
;
1934 parse_regextype (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1936 const char *type_name
;
1937 if (collect_arg(argv
, arg_ptr
, &type_name
))
1939 /* collect the regex type name */
1940 options
.regex_options
= get_regex_type(type_name
);
1941 return parse_noop(entry
, argv
, arg_ptr
);
1948 parse_regex (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1950 return insert_regex (argv
, arg_ptr
, entry
, options
.regex_options
);
1954 insert_regex (char **argv
,
1956 const struct parser_table
*entry
,
1960 if (collect_arg(argv
, arg_ptr
, &rx
))
1962 struct re_pattern_buffer
*re
;
1963 const char *error_message
;
1964 struct predicate
*our_pred
= insert_primary_withpred (entry
, pred_regex
);
1965 our_pred
->need_stat
= our_pred
->need_type
= false;
1966 re
= xmalloc (sizeof (struct re_pattern_buffer
));
1967 our_pred
->args
.regex
= re
;
1968 re
->allocated
= 100;
1969 re
->buffer
= xmalloc (re
->allocated
);
1972 re_set_syntax(regex_options
);
1973 re
->syntax
= regex_options
;
1974 re
->translate
= NULL
;
1976 error_message
= re_compile_pattern (rx
, strlen(rx
), re
);
1978 error (1, 0, "%s", error_message
);
1979 our_pred
->est_success_rate
= estimate_pattern_match_rate(rx
, 1);
1986 parse_size (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
1988 struct predicate
*our_pred
;
1991 enum comparison_type c_type
;
1996 /* XXX: cannot (yet) convert to ue collect_arg() as this
1997 * function modifies the args in-place.
1999 if ((argv
== NULL
) || (argv
[*arg_ptr
] == NULL
))
2002 len
= strlen (argv
[*arg_ptr
]);
2004 error (1, 0, _("invalid null argument to -size"));
2006 suffix
= argv
[*arg_ptr
][len
- 1];
2011 argv
[*arg_ptr
][len
- 1] = '\0';
2016 argv
[*arg_ptr
][len
- 1] = '\0';
2021 argv
[*arg_ptr
][len
- 1] = '\0';
2024 case 'M': /* Megabytes */
2025 blksize
= 1024*1024;
2026 argv
[*arg_ptr
][len
- 1] = '\0';
2029 case 'G': /* Gigabytes */
2030 blksize
= 1024*1024*1024;
2031 argv
[*arg_ptr
][len
- 1] = '\0';
2036 argv
[*arg_ptr
][len
- 1] = '\0';
2052 error (1, 0, _("invalid -size type `%c'"), argv
[*arg_ptr
][len
- 1]);
2054 /* TODO: accept fractional megabytes etc. ? */
2055 if (!get_num (argv
[*arg_ptr
], &num
, &c_type
))
2058 _("Invalid argument `%s%c' to -size"),
2059 argv
[*arg_ptr
], (int)suffix
);
2062 our_pred
= insert_primary (entry
);
2063 our_pred
->args
.size
.kind
= c_type
;
2064 our_pred
->args
.size
.blocksize
= blksize
;
2065 our_pred
->args
.size
.size
= num
;
2066 our_pred
->need_stat
= true;
2067 our_pred
->need_type
= false;
2069 if (COMP_GT
== c_type
)
2070 our_pred
->est_success_rate
= (num
*blksize
> 20480) ? 0.1 : 0.9;
2071 else if (COMP_LT
== c_type
)
2072 our_pred
->est_success_rate
= (num
*blksize
> 20480) ? 0.9 : 0.1;
2074 our_pred
->est_success_rate
= 0.01;
2082 parse_samefile (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2084 /* General idea: stat the file, remember device and inode numbers.
2085 * If a candidate file matches those, it's the same file.
2087 struct predicate
*our_pred
;
2088 struct stat st
, fst
;
2091 set_stat_placeholders(&st
);
2092 if (!collect_arg_stat_info(argv
, arg_ptr
, &st
))
2095 set_stat_placeholders(&fst
);
2096 /* POSIX systems are free to re-use the inode number of a deleted
2097 * file. To ensure that we are not fooled by inode reuse, we hold
2098 * the file open if we can. This would prevent the system reusing
2101 fd
= -3; /* means, uninitialised */
2102 openflags
= O_RDONLY
;
2104 if (options
.symlink_handling
== SYMLINK_NEVER_DEREF
)
2106 if (options
.open_nofollow_available
)
2108 assert (O_NOFOLLOW
!= 0);
2109 openflags
|= O_NOFOLLOW
;
2110 fd
= -1; /* safe to open it. */
2114 if (S_ISLNK(st
.st_mode
))
2116 /* no way to ensure that a symlink will not be followed
2117 * by open(2), so fall back on using lstat(). Accept
2118 * the risk that the named file will be deleted and
2119 * replaced with another having the same inode.
2121 * Avoid opening the file.
2123 fd
= -2; /* Do not open it */
2128 /* Race condition here: the file might become a symlink here. */
2134 /* We want to dereference the symlink anyway */
2135 fd
= -1; /* safe to open it without O_NOFOLLOW */
2138 assert (fd
!= -3); /* check we made a decision */
2141 /* Race condition here. The file might become a
2142 * symbolic link in between out call to stat and
2145 fd
= open(argv
[*arg_ptr
], openflags
);
2149 /* We stat the file again here to prevent a race condition
2150 * between the first stat and the call to open(2).
2152 if (0 != fstat(fd
, &fst
))
2154 fatal_file_error(argv
[*arg_ptr
]);
2158 /* Worry about the race condition. If the file became a
2159 * symlink after our first stat and before our call to
2160 * open, fst may contain the stat information for the
2161 * destination of the link, not the link itself.
2163 if ((*options
.xstat
) (argv
[*arg_ptr
], &st
))
2164 fatal_file_error(argv
[*arg_ptr
]);
2166 if ((options
.symlink_handling
== SYMLINK_NEVER_DEREF
)
2167 && (!options
.open_nofollow_available
))
2169 if (S_ISLNK(st
.st_mode
))
2171 /* We lost the race. Leave the data in st. The
2172 * file descriptor points to the wrong thing.
2179 /* Several possibilities here:
2180 * 1. There was no race
2181 * 2. The file changed into a symlink after the stat and
2182 * before the open, and then back into a non-symlink
2183 * before the second stat.
2185 * In case (1) there is no problem. In case (2),
2186 * the stat() and fstat() calls will have returned
2187 * different data. O_NOFOLLOW was not available,
2188 * so the open() call may have followed a symlink
2189 * even if the -P option is in effect.
2191 if ((st
.st_dev
== fst
.st_dev
)
2192 && (st
.st_ino
== fst
.st_ino
))
2194 /* No race. No need to copy fst to st,
2195 * since they should be identical (modulo
2196 * differences in padding bytes).
2201 /* We lost the race. Leave the data in st. The
2202 * file descriptor points to the wrong thing.
2217 our_pred
= insert_primary (entry
);
2218 our_pred
->args
.samefileid
.ino
= st
.st_ino
;
2219 our_pred
->args
.samefileid
.dev
= st
.st_dev
;
2220 our_pred
->args
.samefileid
.fd
= fd
;
2221 our_pred
->need_type
= false;
2222 our_pred
->need_stat
= true;
2223 our_pred
->est_success_rate
= 0.01f
;
2228 /* This function is commented out partly because support for it is
2232 parse_show_control_chars (const struct parser_table
* entry
,
2237 const char *errmsg
= _("The -show-control-chars option takes "
2238 "a single argument which "
2239 "must be 'literal' or 'safe'");
2241 if ((argv
== NULL
) || (argv
[*arg_ptr
] == NULL
))
2243 error (1, errno
, "%s", errmsg
);
2248 arg
= argv
[*arg_ptr
];
2250 if (0 == strcmp("literal", arg
))
2252 options
.literal_control_chars
= true;
2254 else if (0 == strcmp("safe", arg
))
2256 options
.literal_control_chars
= false;
2260 error (1, errno
, "%s", errmsg
);
2263 (*arg_ptr
)++; /* consume the argument. */
2271 parse_true (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2273 struct predicate
*our_pred
;
2278 our_pred
= insert_primary (entry
);
2279 our_pred
->need_stat
= our_pred
->need_type
= false;
2280 our_pred
->est_success_rate
= 1.0f
;
2285 parse_noop (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2288 return parse_true(get_noop(), argv
, arg_ptr
);
2292 parse_accesscheck (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2294 struct predicate
*our_pred
;
2297 our_pred
= insert_primary (entry
);
2298 our_pred
->need_stat
= our_pred
->need_type
= false;
2299 our_pred
->side_effects
= our_pred
->no_default_print
= false;
2300 if (pred_is(our_pred
, pred_executable
))
2301 our_pred
->est_success_rate
= 0.2;
2303 our_pred
->est_success_rate
= 0.9;
2308 parse_type (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2310 return insert_type (argv
, arg_ptr
, entry
, pred_type
);
2314 parse_uid (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2316 struct predicate
*p
= insert_num (argv
, arg_ptr
, entry
);
2319 p
->est_success_rate
= (p
->args
.numinfo
.l_val
< 100) ? 0.99 : 0.2;
2329 parse_used (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2331 struct predicate
*our_pred
;
2332 struct time_val tval
;
2333 const char *offset_str
;
2334 const char *errmsg
= "arithmetic overflow while converting %s days to a number of seconds";
2336 if (collect_arg(argv
, arg_ptr
, &offset_str
))
2338 /* The timespec is actually a delta value, so we use an origin of 0. */
2339 if (get_relative_timestamp(offset_str
, &tval
, 0, DAYSECS
, errmsg
))
2341 our_pred
= insert_primary (entry
);
2342 our_pred
->args
.reftime
= tval
;
2343 our_pred
->est_success_rate
= estimate_file_age_success_rate(tval
.ts
.tv_sec
/ DAYSECS
);
2348 error(1, 0, _("Invalid argument %s to -used"), offset_str
);
2354 return false; /* missing argument */
2359 parse_user (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2361 const char *username
;
2363 if (collect_arg(argv
, arg_ptr
, &username
))
2365 struct predicate
*our_pred
;
2367 struct passwd
*cur_pwd
= getpwnam(username
);
2369 if (cur_pwd
!= NULL
)
2371 uid
= cur_pwd
->pw_uid
;
2375 int uid_len
= strspn (username
, "0123456789");
2376 if (uid_len
&& (username
[uid_len
]==0))
2377 uid
= safe_atoi (username
);
2381 our_pred
= insert_primary (entry
);
2382 our_pred
->args
.uid
= uid
;
2383 our_pred
->est_success_rate
= (our_pred
->args
.uid
< 100) ? 0.99 : 0.2;
2390 parse_version (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2399 display_findutils_version("find");
2400 printf (_("Features enabled: "));
2403 printf("CACHE_IDS ");
2411 printf("DEBUG_STAT ");
2414 #if defined USE_STRUCT_DIRENT_D_TYPE && defined HAVE_STRUCT_DIRENT_D_TYPE
2418 #if defined O_NOFOLLOW
2419 printf("O_NOFOLLOW(%s) ",
2420 (options
.open_nofollow_available
? "enabled" : "disabled"));
2423 #if defined LEAF_OPTIMISATION
2424 printf("LEAF_OPTIMISATION ");
2429 if (is_fts_enabled(&flags
))
2435 if (flags
& FTS_CWDFD
)
2441 printf("FTS_CWDFD");
2447 printf("CBO(level=%d) ", (int)(options
.optimisation_level
));
2452 /* For the moment, leave this as English in case someone wants
2453 to parse these strings. */
2462 parse_xdev (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2464 options
.stay_on_filesystem
= true;
2465 return parse_noop(entry
, argv
, arg_ptr
);
2469 parse_ignore_race (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2471 options
.ignore_readdir_race
= true;
2472 return parse_noop(entry
, argv
, arg_ptr
);
2476 parse_noignore_race (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2478 options
.ignore_readdir_race
= false;
2479 return parse_noop(entry
, argv
, arg_ptr
);
2483 parse_warn (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2485 options
.warnings
= true;
2486 return parse_noop(entry
, argv
, arg_ptr
);
2490 parse_xtype (const struct parser_table
* entry
, char **argv
, int *arg_ptr
)
2492 return insert_type (argv
, arg_ptr
, entry
, pred_xtype
);
2496 insert_type (char **argv
, int *arg_ptr
,
2497 const struct parser_table
*entry
,
2498 PRED_FUNC which_pred
)
2501 struct predicate
*our_pred
;
2503 const char *typeletter
;
2505 if (collect_arg(argv
, arg_ptr
, &typeletter
))
2507 if (strlen(typeletter
) != 1u)
2509 error(1, 0, _("Arguments to -type should contain only one letter"));
2513 switch (typeletter
[0])
2515 case 'b': /* block special */
2516 type_cell
= S_IFBLK
;
2519 case 'c': /* character special */
2520 type_cell
= S_IFCHR
;
2523 case 'd': /* directory */
2524 type_cell
= S_IFDIR
;
2527 case 'f': /* regular file */
2528 type_cell
= S_IFREG
;
2532 case 'l': /* symbolic link */
2533 type_cell
= S_IFLNK
;
2538 case 'p': /* pipe */
2539 type_cell
= S_IFIFO
;
2544 case 's': /* socket */
2545 type_cell
= S_IFSOCK
;
2550 case 'D': /* Solaris door */
2551 type_cell
= S_IFDOOR
;
2555 default: /* None of the above ... nuke 'em. */
2556 error(1, 0, _("Unknown argument to -type: %c"), (*typeletter
));
2559 our_pred
= insert_primary_withpred (entry
, which_pred
);
2560 our_pred
->est_success_rate
= rate
;
2562 /* Figure out if we will need to stat the file, because if we don't
2563 * need to follow symlinks, we can avoid a stat call by using
2564 * struct dirent.d_type.
2566 if (which_pred
== pred_xtype
)
2568 our_pred
->need_stat
= true;
2569 our_pred
->need_type
= false;
2573 our_pred
->need_stat
= false; /* struct dirent is enough */
2574 our_pred
->need_type
= true;
2576 our_pred
->args
.type
= type_cell
;
2583 /* Return true if the file accessed via FP is a terminal.
2586 stream_is_tty(FILE *fp
)
2588 int fd
= fileno(fp
);
2591 return false; /* not a valid stream */
2595 return isatty(fd
) ? true : false;
2603 /* XXX: do we need to pass FUNC to this function? */
2605 insert_fprintf (struct format_val
*vec
,
2606 const struct parser_table
*entry
, PRED_FUNC func
,
2607 const char *format_const
)
2609 char *format
= (char*)format_const
; /* XXX: casting away constness */
2610 register char *scan
; /* Current address in scanning `format'. */
2611 register char *scan2
; /* Address inside of element being scanned. */
2612 struct segment
**segmentp
; /* Address of current segment. */
2613 struct predicate
*our_pred
;
2615 our_pred
= insert_primary_withpred (entry
, func
);
2616 our_pred
->side_effects
= our_pred
->no_default_print
= true;
2617 our_pred
->args
.printf_vec
= *vec
;
2618 our_pred
->need_type
= false;
2619 our_pred
->need_stat
= false;
2620 our_pred
->p_cost
= NeedsNothing
;
2622 segmentp
= &our_pred
->args
.printf_vec
.segment
;
2625 for (scan
= format
; *scan
; scan
++)
2630 if (*scan2
>= '0' && *scan2
<= '7')
2634 for (i
= n
= 0; i
< 3 && (*scan2
>= '0' && *scan2
<= '7');
2636 n
= 8 * n
+ *scan2
- '0';
2651 make_segment (segmentp
, format
, scan
- format
,
2654 if (our_pred
->need_stat
&& (our_pred
->p_cost
< NeedsStatInfo
))
2655 our_pred
->p_cost
= NeedsStatInfo
;
2673 /* *scan = '\\'; * it already is */
2677 _("warning: unrecognized escape `\\%c'"), *scan2
);
2682 segmentp
= make_segment (segmentp
, format
, scan
- format
+ 1,
2685 format
= scan2
+ 1; /* Move past the escape. */
2686 scan
= scan2
; /* Incremented immediately by `for'. */
2688 else if (*scan
== '%')
2692 /* Trailing %. We don't like those. */
2693 error (1, 0, _("error: %s at end of format string"), scan
);
2695 else if (scan
[1] == '%')
2697 segmentp
= make_segment (segmentp
, format
, scan
- format
+ 1,
2704 /* Scan past flags, width and precision, to verify kind. */
2705 for (scan2
= scan
; *++scan2
&& strchr ("-+ #", *scan2
);)
2707 while (ISDIGIT (*scan2
))
2710 for (scan2
++; ISDIGIT (*scan2
); scan2
++)
2712 if (strchr ("abcdDfFgGhHiklmMnpPsStuUyY", *scan2
))
2714 segmentp
= make_segment (segmentp
, format
, scan2
- format
,
2715 KIND_FORMAT
, *scan2
, 0,
2720 else if (strchr ("ABCT", *scan2
) && scan2
[1])
2722 segmentp
= make_segment (segmentp
, format
, scan2
- format
,
2723 KIND_FORMAT
, scan2
[0], scan2
[1],
2731 /* An unrecognized % escape. Print the char after the %. */
2732 error (0, 0, _("warning: unrecognized format directive `%%%c'"),
2734 segmentp
= make_segment (segmentp
, format
, scan
- format
,
2744 make_segment (segmentp
, format
, scan
- format
, KIND_PLAIN
, 0, 0,
2749 /* Create a new fprintf segment in *SEGMENT, with type KIND,
2750 from the text in FORMAT, which has length LEN.
2751 Return the address of the `next' pointer of the new segment. */
2753 static struct segment
**
2754 make_segment (struct segment
**segment
,
2759 char aux_format_char
,
2760 struct predicate
*pred
)
2762 enum EvaluationCost mycost
= NeedsNothing
;
2765 *segment
= xmalloc (sizeof (struct segment
));
2767 (*segment
)->segkind
= kind
;
2768 (*segment
)->format_char
[0] = format_char
;
2769 (*segment
)->format_char
[1] = aux_format_char
;
2770 (*segment
)->next
= NULL
;
2771 (*segment
)->text_len
= len
;
2773 fmt
= (*segment
)->text
= xmalloc (len
+ sizeof "d");
2774 strncpy (fmt
, format
, len
);
2779 case KIND_PLAIN
: /* Plain text string, no % conversion. */
2780 case KIND_STOP
: /* Terminate argument, no newline. */
2781 assert (0 == format_char
);
2782 assert (0 == aux_format_char
);
2784 if (mycost
> pred
->p_cost
)
2785 pred
->p_cost
= NeedsNothing
;
2786 return &(*segment
)->next
;
2790 assert (kind
== KIND_FORMAT
);
2791 switch (format_char
)
2793 case 'l': /* object of symlink */
2794 pred
->need_stat
= true;
2795 mycost
= NeedsLinkName
;
2799 case 'y': /* file type */
2800 pred
->need_type
= true;
2805 case 'a': /* atime in `ctime' format */
2806 case 'A': /* atime in user-specified strftime format */
2807 case 'B': /* birth time in user-specified strftime format */
2808 case 'c': /* ctime in `ctime' format */
2809 case 'C': /* ctime in user-specified strftime format */
2810 case 'F': /* file system type */
2811 case 'g': /* group name */
2812 case 'i': /* inode number */
2813 case 'M': /* mode in `ls -l' format (eg., "drwxr-xr-x") */
2814 case 's': /* size in bytes */
2815 case 't': /* mtime in `ctime' format */
2816 case 'T': /* mtime in user-specified strftime format */
2817 case 'u': /* user name */
2818 pred
->need_stat
= true;
2819 mycost
= NeedsStatInfo
;
2823 case 'S': /* sparseness */
2824 pred
->need_stat
= true;
2825 mycost
= NeedsStatInfo
;
2829 case 'Y': /* symlink pointed file type */
2830 pred
->need_stat
= true;
2831 mycost
= NeedsType
; /* true for amortised effect */
2835 case 'f': /* basename of path */
2836 case 'h': /* leading directories part of path */
2837 case 'p': /* pathname */
2838 case 'P': /* pathname with ARGV element stripped */
2842 case 'H': /* ARGV element file was found under */
2846 /* Numeric items that one might expect to honour
2847 * #, 0, + flags but which do not.
2849 case 'G': /* GID number */
2850 case 'U': /* UID number */
2851 case 'b': /* size in 512-byte blocks (NOT birthtime in ctime fmt)*/
2852 case 'D': /* Filesystem device on which the file exits */
2853 case 'k': /* size in 1K blocks */
2854 case 'n': /* number of links */
2855 pred
->need_stat
= true;
2856 mycost
= NeedsStatInfo
;
2860 /* Numeric items that DO honour #, 0, + flags.
2862 case 'd': /* depth in search tree (0 = ARGV element) */
2866 case 'm': /* mode as octal number (perms only) */
2868 pred
->need_stat
= true;
2869 mycost
= NeedsStatInfo
;
2876 _("error: the format directive `%%%c' is reserved for future use"),
2883 if (mycost
> pred
->p_cost
)
2884 pred
->p_cost
= mycost
;
2885 return &(*segment
)->next
;
2889 check_path_safety(const char *action
, char **argv
)
2892 const char *path
= getenv("PATH");
2895 /* $PATH is not set. Assume the OS default is safe.
2896 * That may not be true on Windows, but I'm not aware
2897 * of a way to get Windows to avoid searching the
2898 * current directory anyway.
2905 s
= next_element(path
, 1);
2906 while ((s
= next_element ((char *) NULL
, 1)) != NULL
)
2908 if (0 == strcmp(s
, "."))
2910 error(1, 0, _("The current directory is included in the PATH "
2911 "environment variable, which is insecure in "
2912 "combination with the %s action of find. "
2913 "Please remove the current directory from your "
2914 "$PATH (that is, remove \".\" or leading or trailing "
2918 else if ('/' != s
[0])
2920 /* Relative paths are also dangerous in $PATH. */
2921 error(1, 0, _("The relative path %s is included in the PATH "
2922 "environment variable, which is insecure in "
2923 "combination with the %s action of find. "
2924 "Please remove that entry from $PATH"),
2925 safely_quote_err_filename(0, s
),
2932 /* handles both exec and ok predicate */
2934 new_insert_exec_ok (const char *action
,
2935 const struct parser_table
*entry
,
2940 int start
, end
; /* Indexes in ARGV of start & end of cmd. */
2941 int i
; /* Index into cmd args */
2942 int saw_braces
; /* True if previous arg was '{}'. */
2943 boolean allow_plus
; /* True if + is a valid terminator */
2944 int brace_count
; /* Number of instances of {}. */
2945 PRED_FUNC func
= entry
->pred_func
;
2946 enum BC_INIT_STATUS bcstatus
;
2948 struct predicate
*our_pred
;
2949 struct exec_val
*execp
; /* Pointer for efficiency. */
2951 if ((argv
== NULL
) || (argv
[*arg_ptr
] == NULL
))
2954 our_pred
= insert_primary_withpred (entry
, func
);
2955 our_pred
->side_effects
= our_pred
->no_default_print
= true;
2956 our_pred
->need_type
= our_pred
->need_stat
= false;
2958 execp
= &our_pred
->args
.exec_vec
;
2960 if ((func
!= pred_okdir
) && (func
!= pred_ok
))
2963 execp
->close_stdin
= false;
2968 /* If find reads stdin (i.e. for -ok and similar), close stdin
2969 * in the child to prevent some script from consiming the output
2970 * intended for find.
2972 execp
->close_stdin
= true;
2976 if ((func
== pred_execdir
) || (func
== pred_okdir
))
2978 options
.ignore_readdir_race
= false;
2979 check_path_safety(action
, argv
);
2980 execp
->use_current_dir
= true;
2984 execp
->use_current_dir
= false;
2987 our_pred
->args
.exec_vec
.multiple
= 0;
2989 /* Count the number of args with path replacements, up until the ';'.
2990 * Also figure out if the command is terminated by ";" or by "+".
2993 for (end
= start
, saw_braces
=0, brace_count
=0;
2995 && ((argv
[end
][0] != ';') || (argv
[end
][1] != '\0'));
2998 /* For -exec and -execdir, "{} +" can terminate the command. */
3000 && argv
[end
][0] == '+' && argv
[end
][1] == 0
3003 our_pred
->args
.exec_vec
.multiple
= 1;
3008 if (mbsstr (argv
[end
], "{}"))
3013 if (0 == end
&& (func
== pred_execdir
|| func
== pred_okdir
))
3015 /* The POSIX standard says that {} replacement should
3016 * occur even in the utility name. This is insecure
3017 * since it means we will be executing a command whose
3018 * name is chosen according to whatever find finds in
3019 * the file system. That can be influenced by an
3020 * attacker. Hence for -execdir and -okdir this is not
3021 * allowed. We can specify this as those options are
3022 * not defined by POSIX.
3024 error(1, 0, _("You may not use {} within the utility name for "
3025 "-execdir and -okdir, because this is a potential "
3026 "security problem."));
3031 /* Fail if no command given or no semicolon found. */
3032 if ((end
== start
) || (argv
[end
] == NULL
))
3039 if (our_pred
->args
.exec_vec
.multiple
&& brace_count
> 1)
3043 if (func
== pred_execdir
)
3049 _("Only one instance of {} is supported with -exec%s ... +"),
3053 /* We use a switch statement here so that the compiler warns us when
3054 * we forget to handle a newly invented enum value.
3056 * Like xargs, we allow 2KiB of headroom for the launched utility to
3057 * export its own environment variables before calling something
3060 bcstatus
= bc_init_controlinfo(&execp
->ctl
, 2048u);
3063 case BC_INIT_ENV_TOO_BIG
:
3064 case BC_INIT_CANNOT_ACCOMODATE_HEADROOM
:
3066 _("The environment is too large for exec()."));
3069 /* Good news. Carry on. */
3072 bc_use_sensible_arg_max(&execp
->ctl
);
3075 execp
->ctl
.exec_callback
= launch
;
3077 if (our_pred
->args
.exec_vec
.multiple
)
3079 /* "+" terminator, so we can just append our arguments after the
3080 * command and initial arguments.
3082 execp
->replace_vec
= NULL
;
3083 execp
->ctl
.replace_pat
= NULL
;
3084 execp
->ctl
.rplen
= 0;
3085 execp
->ctl
.lines_per_exec
= 0; /* no limit */
3086 execp
->ctl
.args_per_exec
= 0; /* no limit */
3088 /* remember how many arguments there are */
3089 execp
->ctl
.initial_argc
= (end
-start
) - 1;
3091 /* execp->state = xmalloc(sizeof struct buildcmd_state); */
3092 bc_init_state(&execp
->ctl
, &execp
->state
, execp
);
3094 /* Gather the initial arguments. Skip the {}. */
3095 for (i
=start
; i
<end
-1; ++i
)
3097 bc_push_arg(&execp
->ctl
, &execp
->state
,
3098 argv
[i
], strlen(argv
[i
])+1,
3105 /* Semicolon terminator - more than one {} is supported, so we
3106 * have to do brace-replacement.
3108 execp
->num_args
= end
- start
;
3110 execp
->ctl
.replace_pat
= "{}";
3111 execp
->ctl
.rplen
= strlen(execp
->ctl
.replace_pat
);
3112 execp
->ctl
.lines_per_exec
= 0; /* no limit */
3113 execp
->ctl
.args_per_exec
= 0; /* no limit */
3114 execp
->replace_vec
= xmalloc(sizeof(char*)*execp
->num_args
);
3117 /* execp->state = xmalloc(sizeof(*(execp->state))); */
3118 bc_init_state(&execp
->ctl
, &execp
->state
, execp
);
3120 /* Remember the (pre-replacement) arguments for later. */
3121 for (i
=0; i
<execp
->num_args
; ++i
)
3123 execp
->replace_vec
[i
] = argv
[i
+start
];
3127 if (argv
[end
] == NULL
)
3138 insert_exec_ok (const char *action
,
3139 const struct parser_table
*entry
,
3144 return new_insert_exec_ok(action
, entry
, dirfd
, argv
, arg_ptr
);
3149 /* Get a timestamp and comparison type.
3151 STR is the ASCII representation.
3152 Set *NUM_DAYS to the number of days/minutes/whatever, taken as being
3153 relative to ORIGIN (usually the current moment or midnight).
3154 Thus the sense of the comparison type appears to be reversed.
3155 Set *COMP_TYPE to the kind of comparison that is requested.
3156 Issue OVERFLOWMESSAGE if overflow occurs.
3157 Return true if all okay, false if input error.
3159 Used by -atime, -ctime and -mtime (parsers) to
3160 get the appropriate information for a time predicate processor. */
3163 get_relative_timestamp (const char *str
,
3164 struct time_val
*result
,
3166 double sec_per_unit
,
3167 const char *overflowmessage
)
3170 double offset
, seconds
, f
;
3172 if (get_comp_type(&str
, &result
->kind
))
3174 /* Invert the sense of the comparison */
3175 switch (result
->kind
)
3177 case COMP_LT
: result
->kind
= COMP_GT
; break;
3178 case COMP_GT
: result
->kind
= COMP_LT
; break;
3182 /* Convert the ASCII number into floating-point. */
3183 if (xstrtod(str
, NULL
, &offset
, strtod
))
3185 /* Separate the floating point number the user specified
3186 * (which is a number of days, or minutes, etc) into an
3187 * integral number of seconds (SECONDS) and a fraction (F).
3189 f
= modf(offset
* sec_per_unit
, &seconds
);
3191 result
->ts
.tv_sec
= origin
- seconds
;
3192 result
->ts
.tv_nsec
= fabs(f
* 1e9
);
3194 /* Check for overflow. */
3195 checkval
= (uintmax_t)origin
- seconds
;
3196 if (checkval
!= result
->ts
.tv_sec
)
3198 /* an overflow has occurred. */
3199 error (1, 0, overflowmessage
, str
);
3205 /* Conversion from ASCII to double failed. */
3215 /* Insert a time predicate based on the information in ENTRY.
3216 ARGV is a pointer to the argument array.
3217 ARG_PTR is a pointer to an index into the array, incremented if
3220 Return true if input is valid, false if not.
3222 A new predicate node is assigned, along with an argument node
3223 obtained with malloc.
3225 Used by -atime, -ctime, and -mtime parsers. */
3228 parse_time (const struct parser_table
* entry
, char *argv
[], int *arg_ptr
)
3230 struct predicate
*our_pred
;
3231 struct time_val tval
;
3232 enum comparison_type comp
;
3233 const char *timearg
, *orig_timearg
;
3234 const char *errmsg
= "arithmetic overflow while converting %s "
3235 "days to a number of seconds";
3238 if (!collect_arg(argv
, arg_ptr
, &timearg
))
3240 orig_timearg
= timearg
;
3242 /* Decide the origin by previewing the comparison type. */
3243 origin
= options
.cur_day_start
;
3245 if (get_comp_type(&timearg
, &comp
))
3247 /* Remember, we invert the sense of the comparison, so this tests
3248 * against COMP_LT instead of COMP_GT...
3250 if (COMP_LT
== comp
)
3252 uintmax_t expected
= origin
+ (DAYSECS
-1);
3253 origin
+= (DAYSECS
-1);
3254 if (origin
!= expected
)
3257 _("arithmetic overflow when trying to calculate the end of today"));
3261 /* We discard the value of comp here, as get_relative_timestamp
3262 * will set tval.kind. For that to work, we have to restore
3263 * timearg so that it points to the +/- prefix, if any. get_comp_type()
3264 * will have advanced timearg, so we restore it.
3266 timearg
= orig_timearg
;
3268 if (!get_relative_timestamp(timearg
, &tval
, origin
, DAYSECS
, errmsg
))
3271 our_pred
= insert_primary (entry
);
3272 our_pred
->args
.reftime
= tval
;
3273 our_pred
->est_success_rate
= estimate_timestamp_success_rate(tval
.ts
.tv_sec
);
3275 if (options
.debug_options
& DebugExpressionTree
)
3279 fprintf (stderr
, "inserting %s\n", our_pred
->p_name
);
3280 fprintf (stderr
, " type: %s %s ",
3281 (tval
.kind
== COMP_GT
) ? "gt" :
3282 ((tval
.kind
== COMP_LT
) ? "lt" : ((tval
.kind
== COMP_EQ
) ? "eq" : "?")),
3283 (tval
.kind
== COMP_GT
) ? " >" :
3284 ((tval
.kind
== COMP_LT
) ? " <" : ((tval
.kind
== COMP_EQ
) ? ">=" : " ?")));
3285 t
= our_pred
->args
.reftime
.ts
.tv_sec
;
3286 fprintf (stderr
, "%ju %s",
3287 (uintmax_t) our_pred
->args
.reftime
.ts
.tv_sec
,
3289 if (tval
.kind
== COMP_EQ
)
3291 t
= our_pred
->args
.reftime
.ts
.tv_sec
+ DAYSECS
;
3292 fprintf (stderr
, " < %ju %s",
3293 (uintmax_t) t
, ctime (&t
));
3300 /* Get the comparison type prefix (if any) from a number argument.
3301 The prefix is at *STR.
3302 Set *COMP_TYPE to the kind of comparison that is requested.
3303 Advance *STR beyond any initial comparison prefix.
3305 Return true if all okay, false if input error. */
3307 get_comp_type(const char **str
, enum comparison_type
*comp_type
)
3312 *comp_type
= COMP_GT
;
3316 *comp_type
= COMP_LT
;
3320 *comp_type
= COMP_EQ
;
3330 /* Get a number with comparison information.
3331 The sense of the comparison information is 'normal'; that is,
3332 '+' looks for a count > than the number and '-' less than.
3334 STR is the ASCII representation of the number.
3335 Set *NUM to the number.
3336 Set *COMP_TYPE to the kind of comparison that is requested.
3338 Return true if all okay, false if input error. */
3341 get_num (const char *str
,
3343 enum comparison_type
*comp_type
)
3350 /* Figure out the comparison type if the caller accepts one. */
3353 if (!get_comp_type(&str
, comp_type
))
3357 return xstrtoumax (str
, &pend
, 10, num
, "") == LONGINT_OK
;
3360 /* Insert a number predicate.
3361 ARGV is a pointer to the argument array.
3362 *ARG_PTR is an index into ARGV, incremented if all went well.
3363 *PRED is the predicate processor to insert.
3365 Return true if input is valid, false if error.
3367 A new predicate node is assigned, along with an argument node
3368 obtained with malloc.
3370 Used by -inum and -links parsers. */
3372 static struct predicate
*
3373 insert_num (char **argv
, int *arg_ptr
, const struct parser_table
*entry
)
3377 if (collect_arg(argv
, arg_ptr
, &numstr
))
3380 enum comparison_type c_type
;
3382 if (get_num (numstr
, &num
, &c_type
))
3384 struct predicate
*our_pred
= insert_primary (entry
);
3385 our_pred
->args
.numinfo
.kind
= c_type
;
3386 our_pred
->args
.numinfo
.l_val
= num
;
3388 if (options
.debug_options
& DebugExpressionTree
)
3390 fprintf (stderr
, "inserting %s\n", our_pred
->p_name
);
3391 fprintf (stderr
, " type: %s %s ",
3392 (c_type
== COMP_GT
) ? "gt" :
3393 ((c_type
== COMP_LT
) ? "lt" : ((c_type
== COMP_EQ
) ? "eq" : "?")),
3394 (c_type
== COMP_GT
) ? " >" :
3395 ((c_type
== COMP_LT
) ? " <" : ((c_type
== COMP_EQ
) ? " =" : " ?")));
3396 fprintf (stderr
, "%ju\n", our_pred
->args
.numinfo
.l_val
);
3405 open_output_file (const char *path
, struct format_val
*p
)
3408 p
->quote_opts
= clone_quoting_options (NULL
);
3410 if (!strcmp (path
, "/dev/stderr"))
3413 p
->filename
= _("standard error");
3415 else if (!strcmp (path
, "/dev/stdout"))
3418 p
->filename
= _("standard output");
3422 p
->stream
= fopen_safer (path
, "w");
3425 if (p
->stream
== NULL
)
3427 fatal_file_error(path
);
3431 p
->dest_is_tty
= stream_is_tty(p
->stream
);
3435 open_stdout (struct format_val
*p
)
3437 open_output_file("/dev/stdout", p
);