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cce855bc JA |
1 | /* findcmd.c -- Functions to search for commands by name. */ |
2 | ||
3 | /* Copyright (C) 1997 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
7 | Bash is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by | |
bb70624e | 9 | the Free Software Foundation; either version 2, or (at your option) |
cce855bc JA |
10 | any later version. |
11 | ||
12 | Bash is distributed in the hope that it will be useful, but WITHOUT | |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with Bash; see the file COPYING. If not, write to the | |
19 | Free Software Foundation Inc., | |
20 | 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "config.h" | |
23 | ||
24 | #include <stdio.h> | |
f73dda09 | 25 | #include "chartypes.h" |
cce855bc | 26 | #include "bashtypes.h" |
b80f6443 | 27 | #if !defined (_MINIX) && defined (HAVE_SYS_FILE_H) |
cce855bc JA |
28 | # include <sys/file.h> |
29 | #endif | |
30 | #include "filecntl.h" | |
31 | #include "posixstat.h" | |
32 | ||
33 | #if defined (HAVE_UNISTD_H) | |
34 | # include <unistd.h> | |
35 | #endif | |
36 | ||
cce855bc JA |
37 | #include "bashansi.h" |
38 | ||
39 | #include "memalloc.h" | |
40 | #include "shell.h" | |
41 | #include "flags.h" | |
42 | #include "hashlib.h" | |
43 | #include "pathexp.h" | |
44 | #include "hashcmd.h" | |
f73dda09 | 45 | #include "findcmd.h" /* matching prototypes and declarations */ |
cce855bc JA |
46 | |
47 | extern int posixly_correct; | |
48 | ||
49 | /* Static functions defined and used in this file. */ | |
f73dda09 JA |
50 | static char *_find_user_command_internal __P((const char *, int)); |
51 | static char *find_user_command_internal __P((const char *, int)); | |
52 | static char *find_user_command_in_path __P((const char *, char *, int)); | |
53 | static char *find_in_path_element __P((const char *, char *, int, int, struct stat *)); | |
54 | static char *find_absolute_program __P((const char *, int)); | |
55 | ||
56 | static char *get_next_path_element __P((char *, int *)); | |
cce855bc JA |
57 | |
58 | /* The file name which we would try to execute, except that it isn't | |
59 | possible to execute it. This is the first file that matches the | |
60 | name that we are looking for while we are searching $PATH for a | |
61 | suitable one to execute. If we cannot find a suitable executable | |
62 | file, then we use this one. */ | |
63 | static char *file_to_lose_on; | |
64 | ||
65 | /* Non-zero if we should stat every command found in the hash table to | |
66 | make sure it still exists. */ | |
67 | int check_hashed_filenames; | |
68 | ||
69 | /* DOT_FOUND_IN_SEARCH becomes non-zero when find_user_command () | |
70 | encounters a `.' as the directory pathname while scanning the | |
71 | list of possible pathnames; i.e., if `.' comes before the directory | |
72 | containing the file of interest. */ | |
73 | int dot_found_in_search = 0; | |
74 | ||
cce855bc JA |
75 | /* Return some flags based on information about this file. |
76 | The EXISTS bit is non-zero if the file is found. | |
77 | The EXECABLE bit is non-zero the file is executble. | |
78 | Zero is returned if the file is not found. */ | |
79 | int | |
80 | file_status (name) | |
f73dda09 | 81 | const char *name; |
cce855bc JA |
82 | { |
83 | struct stat finfo; | |
95732b49 | 84 | int r; |
cce855bc JA |
85 | |
86 | /* Determine whether this file exists or not. */ | |
87 | if (stat (name, &finfo) < 0) | |
88 | return (0); | |
89 | ||
90 | /* If the file is a directory, then it is not "executable" in the | |
91 | sense of the shell. */ | |
92 | if (S_ISDIR (finfo.st_mode)) | |
93 | return (FS_EXISTS|FS_DIRECTORY); | |
94 | ||
95732b49 JA |
95 | r = FS_EXISTS; |
96 | ||
cce855bc JA |
97 | #if defined (AFS) |
98 | /* We have to use access(2) to determine access because AFS does not | |
99 | support Unix file system semantics. This may produce wrong | |
100 | answers for non-AFS files when ruid != euid. I hate AFS. */ | |
95732b49 JA |
101 | if (access (name, X_OK) == 0) |
102 | r |= FS_EXECABLE; | |
103 | if (access (name, R_OK) == 0) | |
104 | r |= FS_READABLE; | |
105 | ||
106 | return r; | |
cce855bc JA |
107 | #else /* !AFS */ |
108 | ||
109 | /* Find out if the file is actually executable. By definition, the | |
110 | only other criteria is that the file has an execute bit set that | |
95732b49 | 111 | we can use. The same with whether or not a file is readable. */ |
cce855bc JA |
112 | |
113 | /* Root only requires execute permission for any of owner, group or | |
95732b49 | 114 | others to be able to exec a file, and can read any file. */ |
cce855bc JA |
115 | if (current_user.euid == (uid_t)0) |
116 | { | |
95732b49 JA |
117 | r |= FS_READABLE; |
118 | if (finfo.st_mode & S_IXUGO) | |
119 | r |= FS_EXECABLE; | |
120 | return r; | |
cce855bc JA |
121 | } |
122 | ||
95732b49 | 123 | /* If we are the owner of the file, the owner bits apply. */ |
b80f6443 | 124 | if (current_user.euid == finfo.st_uid) |
95732b49 JA |
125 | { |
126 | if (finfo.st_mode & S_IXUSR) | |
127 | r |= FS_EXECABLE; | |
128 | if (finfo.st_mode & S_IRUSR) | |
129 | r |= FS_READABLE; | |
130 | } | |
cce855bc JA |
131 | |
132 | /* If we are in the owning group, the group permissions apply. */ | |
b80f6443 | 133 | else if (group_member (finfo.st_gid)) |
95732b49 JA |
134 | { |
135 | if (finfo.st_mode & S_IXGRP) | |
136 | r |= FS_EXECABLE; | |
137 | if (finfo.st_mode & S_IRGRP) | |
138 | r |= FS_READABLE; | |
139 | } | |
cce855bc | 140 | |
b80f6443 JA |
141 | /* Else we check whether `others' have permission to execute the file */ |
142 | else | |
95732b49 JA |
143 | { |
144 | if (finfo.st_mode & S_IXOTH) | |
145 | r |= FS_EXECABLE; | |
146 | if (finfo.st_mode & S_IROTH) | |
147 | r |= FS_READABLE; | |
148 | } | |
149 | ||
150 | return r; | |
cce855bc JA |
151 | #endif /* !AFS */ |
152 | } | |
153 | ||
154 | /* Return non-zero if FILE exists and is executable. | |
155 | Note that this function is the definition of what an | |
156 | executable file is; do not change this unless YOU know | |
157 | what an executable file is. */ | |
158 | int | |
159 | executable_file (file) | |
f73dda09 | 160 | const char *file; |
cce855bc JA |
161 | { |
162 | int s; | |
163 | ||
164 | s = file_status (file); | |
165 | return ((s & FS_EXECABLE) && ((s & FS_DIRECTORY) == 0)); | |
166 | } | |
167 | ||
168 | int | |
169 | is_directory (file) | |
f73dda09 | 170 | const char *file; |
cce855bc JA |
171 | { |
172 | return (file_status (file) & FS_DIRECTORY); | |
173 | } | |
174 | ||
28ef6c31 JA |
175 | int |
176 | executable_or_directory (file) | |
f73dda09 | 177 | const char *file; |
28ef6c31 JA |
178 | { |
179 | int s; | |
180 | ||
181 | s = file_status (file); | |
182 | return ((s & FS_EXECABLE) || (s & FS_DIRECTORY)); | |
183 | } | |
184 | ||
cce855bc JA |
185 | /* Locate the executable file referenced by NAME, searching along |
186 | the contents of the shell PATH variable. Return a new string | |
187 | which is the full pathname to the file, or NULL if the file | |
188 | couldn't be found. If a file is found that isn't executable, | |
189 | and that is the only match, then return that. */ | |
190 | char * | |
191 | find_user_command (name) | |
f73dda09 | 192 | const char *name; |
cce855bc JA |
193 | { |
194 | return (find_user_command_internal (name, FS_EXEC_PREFERRED|FS_NODIRS)); | |
195 | } | |
196 | ||
197 | /* Locate the file referenced by NAME, searching along the contents | |
198 | of the shell PATH variable. Return a new string which is the full | |
199 | pathname to the file, or NULL if the file couldn't be found. This | |
95732b49 JA |
200 | returns the first readable file found; designed to be used to look |
201 | for shell scripts or files to source. */ | |
cce855bc JA |
202 | char * |
203 | find_path_file (name) | |
f73dda09 | 204 | const char *name; |
cce855bc | 205 | { |
95732b49 | 206 | return (find_user_command_internal (name, FS_READABLE)); |
cce855bc JA |
207 | } |
208 | ||
209 | static char * | |
210 | _find_user_command_internal (name, flags) | |
f73dda09 | 211 | const char *name; |
cce855bc JA |
212 | int flags; |
213 | { | |
214 | char *path_list, *cmd; | |
215 | SHELL_VAR *var; | |
216 | ||
7117c2d2 | 217 | /* Search for the value of PATH in both the temporary environments and |
cce855bc JA |
218 | in the regular list of variables. */ |
219 | if (var = find_variable_internal ("PATH", 1)) /* XXX could be array? */ | |
220 | path_list = value_cell (var); | |
221 | else | |
222 | path_list = (char *)NULL; | |
223 | ||
224 | if (path_list == 0 || *path_list == '\0') | |
225 | return (savestring (name)); | |
226 | ||
227 | cmd = find_user_command_in_path (name, path_list, flags); | |
228 | ||
cce855bc JA |
229 | return (cmd); |
230 | } | |
231 | ||
232 | static char * | |
233 | find_user_command_internal (name, flags) | |
f73dda09 | 234 | const char *name; |
cce855bc JA |
235 | int flags; |
236 | { | |
237 | #ifdef __WIN32__ | |
238 | char *res, *dotexe; | |
239 | ||
f73dda09 | 240 | dotexe = (char *)xmalloc (strlen (name) + 5); |
cce855bc JA |
241 | strcpy (dotexe, name); |
242 | strcat (dotexe, ".exe"); | |
243 | res = _find_user_command_internal (dotexe, flags); | |
244 | free (dotexe); | |
245 | if (res == 0) | |
246 | res = _find_user_command_internal (name, flags); | |
247 | return res; | |
248 | #else | |
249 | return (_find_user_command_internal (name, flags)); | |
250 | #endif | |
251 | } | |
252 | ||
253 | /* Return the next element from PATH_LIST, a colon separated list of | |
254 | paths. PATH_INDEX_POINTER is the address of an index into PATH_LIST; | |
255 | the index is modified by this function. | |
256 | Return the next element of PATH_LIST or NULL if there are no more. */ | |
257 | static char * | |
258 | get_next_path_element (path_list, path_index_pointer) | |
259 | char *path_list; | |
260 | int *path_index_pointer; | |
261 | { | |
262 | char *path; | |
263 | ||
264 | path = extract_colon_unit (path_list, path_index_pointer); | |
265 | ||
bb70624e | 266 | if (path == 0) |
cce855bc JA |
267 | return (path); |
268 | ||
bb70624e | 269 | if (*path == '\0') |
cce855bc JA |
270 | { |
271 | free (path); | |
272 | path = savestring ("."); | |
273 | } | |
274 | ||
275 | return (path); | |
276 | } | |
277 | ||
278 | /* Look for PATHNAME in $PATH. Returns either the hashed command | |
279 | corresponding to PATHNAME or the first instance of PATHNAME found | |
280 | in $PATH. Returns a newly-allocated string. */ | |
281 | char * | |
282 | search_for_command (pathname) | |
f73dda09 | 283 | const char *pathname; |
cce855bc JA |
284 | { |
285 | char *hashed_file, *command; | |
286 | int temp_path, st; | |
287 | SHELL_VAR *path; | |
288 | ||
289 | hashed_file = command = (char *)NULL; | |
290 | ||
291 | /* If PATH is in the temporary environment for this command, don't use the | |
292 | hash table to search for the full pathname. */ | |
7117c2d2 JA |
293 | path = find_variable_internal ("PATH", 1); |
294 | temp_path = path && tempvar_p (path); | |
295 | if (temp_path == 0 && path) | |
296 | path = (SHELL_VAR *)NULL; | |
cce855bc JA |
297 | |
298 | /* Don't waste time trying to find hashed data for a pathname | |
299 | that is already completely specified or if we're using a command- | |
300 | specific value for PATH. */ | |
301 | if (path == 0 && absolute_program (pathname) == 0) | |
7117c2d2 | 302 | hashed_file = phash_search (pathname); |
cce855bc JA |
303 | |
304 | /* If a command found in the hash table no longer exists, we need to | |
305 | look for it in $PATH. Thank you Posix.2. This forces us to stat | |
306 | every command found in the hash table. */ | |
307 | ||
308 | if (hashed_file && (posixly_correct || check_hashed_filenames)) | |
309 | { | |
310 | st = file_status (hashed_file); | |
f1be666c | 311 | if ((st & (FS_EXISTS|FS_EXECABLE)) != (FS_EXISTS|FS_EXECABLE)) |
cce855bc | 312 | { |
7117c2d2 | 313 | phash_remove (pathname); |
cce855bc JA |
314 | free (hashed_file); |
315 | hashed_file = (char *)NULL; | |
316 | } | |
317 | } | |
318 | ||
319 | if (hashed_file) | |
320 | command = hashed_file; | |
321 | else if (absolute_program (pathname)) | |
322 | /* A command containing a slash is not looked up in PATH or saved in | |
323 | the hash table. */ | |
324 | command = savestring (pathname); | |
325 | else | |
326 | { | |
327 | /* If $PATH is in the temporary environment, we've already retrieved | |
328 | it, so don't bother trying again. */ | |
329 | if (temp_path) | |
28ef6c31 | 330 | { |
cce855bc JA |
331 | command = find_user_command_in_path (pathname, value_cell (path), |
332 | FS_EXEC_PREFERRED|FS_NODIRS); | |
28ef6c31 | 333 | } |
cce855bc JA |
334 | else |
335 | command = find_user_command (pathname); | |
336 | if (command && hashing_enabled && temp_path == 0) | |
7117c2d2 | 337 | phash_insert ((char *)pathname, command, dot_found_in_search, 1); /* XXX fix const later */ |
cce855bc JA |
338 | } |
339 | return (command); | |
340 | } | |
341 | ||
342 | char * | |
343 | user_command_matches (name, flags, state) | |
f73dda09 | 344 | const char *name; |
cce855bc JA |
345 | int flags, state; |
346 | { | |
347 | register int i; | |
348 | int path_index, name_len; | |
349 | char *path_list, *path_element, *match; | |
350 | struct stat dotinfo; | |
351 | static char **match_list = NULL; | |
352 | static int match_list_size = 0; | |
353 | static int match_index = 0; | |
354 | ||
355 | if (state == 0) | |
356 | { | |
357 | /* Create the list of matches. */ | |
358 | if (match_list == 0) | |
359 | { | |
360 | match_list_size = 5; | |
7117c2d2 | 361 | match_list = strvec_create (match_list_size); |
cce855bc JA |
362 | } |
363 | ||
364 | /* Clear out the old match list. */ | |
365 | for (i = 0; i < match_list_size; i++) | |
366 | match_list[i] = 0; | |
367 | ||
368 | /* We haven't found any files yet. */ | |
369 | match_index = 0; | |
370 | ||
371 | if (absolute_program (name)) | |
372 | { | |
373 | match_list[0] = find_absolute_program (name, flags); | |
374 | match_list[1] = (char *)NULL; | |
375 | path_list = (char *)NULL; | |
376 | } | |
377 | else | |
378 | { | |
379 | name_len = strlen (name); | |
380 | file_to_lose_on = (char *)NULL; | |
381 | dot_found_in_search = 0; | |
382 | stat (".", &dotinfo); | |
383 | path_list = get_string_value ("PATH"); | |
384 | path_index = 0; | |
385 | } | |
386 | ||
387 | while (path_list && path_list[path_index]) | |
388 | { | |
389 | path_element = get_next_path_element (path_list, &path_index); | |
390 | ||
391 | if (path_element == 0) | |
392 | break; | |
393 | ||
394 | match = find_in_path_element (name, path_element, flags, name_len, &dotinfo); | |
395 | ||
396 | free (path_element); | |
397 | ||
398 | if (match == 0) | |
399 | continue; | |
400 | ||
401 | if (match_index + 1 == match_list_size) | |
402 | { | |
403 | match_list_size += 10; | |
7117c2d2 | 404 | match_list = strvec_resize (match_list, (match_list_size + 1)); |
cce855bc JA |
405 | } |
406 | ||
407 | match_list[match_index++] = match; | |
408 | match_list[match_index] = (char *)NULL; | |
409 | FREE (file_to_lose_on); | |
410 | file_to_lose_on = (char *)NULL; | |
411 | } | |
412 | ||
413 | /* We haven't returned any strings yet. */ | |
414 | match_index = 0; | |
415 | } | |
416 | ||
417 | match = match_list[match_index]; | |
418 | ||
419 | if (match) | |
420 | match_index++; | |
421 | ||
422 | return (match); | |
423 | } | |
424 | ||
cce855bc JA |
425 | static char * |
426 | find_absolute_program (name, flags) | |
f73dda09 | 427 | const char *name; |
cce855bc JA |
428 | int flags; |
429 | { | |
430 | int st; | |
431 | ||
432 | st = file_status (name); | |
433 | ||
434 | /* If the file doesn't exist, quit now. */ | |
435 | if ((st & FS_EXISTS) == 0) | |
436 | return ((char *)NULL); | |
437 | ||
438 | /* If we only care about whether the file exists or not, return | |
439 | this filename. Otherwise, maybe we care about whether this | |
440 | file is executable. If it is, and that is what we want, return it. */ | |
441 | if ((flags & FS_EXISTS) || ((flags & FS_EXEC_ONLY) && (st & FS_EXECABLE))) | |
442 | return (savestring (name)); | |
443 | ||
f73dda09 | 444 | return (NULL); |
cce855bc JA |
445 | } |
446 | ||
447 | static char * | |
448 | find_in_path_element (name, path, flags, name_len, dotinfop) | |
f73dda09 JA |
449 | const char *name; |
450 | char *path; | |
cce855bc JA |
451 | int flags, name_len; |
452 | struct stat *dotinfop; | |
453 | { | |
454 | int status; | |
455 | char *full_path, *xpath; | |
456 | ||
7117c2d2 | 457 | xpath = (*path == '~') ? bash_tilde_expand (path, 0) : path; |
cce855bc JA |
458 | |
459 | /* Remember the location of "." in the path, in all its forms | |
460 | (as long as they begin with a `.', e.g. `./.') */ | |
461 | if (dot_found_in_search == 0 && *xpath == '.') | |
462 | dot_found_in_search = same_file (".", xpath, dotinfop, (struct stat *)NULL); | |
463 | ||
bb70624e | 464 | full_path = sh_makepath (xpath, name, 0); |
cce855bc JA |
465 | |
466 | status = file_status (full_path); | |
467 | ||
468 | if (xpath != path) | |
469 | free (xpath); | |
470 | ||
471 | if ((status & FS_EXISTS) == 0) | |
472 | { | |
473 | free (full_path); | |
474 | return ((char *)NULL); | |
475 | } | |
476 | ||
477 | /* The file exists. If the caller simply wants the first file, here it is. */ | |
478 | if (flags & FS_EXISTS) | |
479 | return (full_path); | |
480 | ||
95732b49 JA |
481 | /* If we have a readable file, and the caller wants a readable file, this |
482 | is it. */ | |
483 | if ((flags & FS_READABLE) && (status & FS_READABLE)) | |
484 | return (full_path); | |
485 | ||
cce855bc JA |
486 | /* If the file is executable, then it satisfies the cases of |
487 | EXEC_ONLY and EXEC_PREFERRED. Return this file unconditionally. */ | |
95732b49 | 488 | if ((status & FS_EXECABLE) && (flags & (FS_EXEC_ONLY|FS_EXEC_PREFERRED)) && |
cce855bc JA |
489 | (((flags & FS_NODIRS) == 0) || ((status & FS_DIRECTORY) == 0))) |
490 | { | |
491 | FREE (file_to_lose_on); | |
492 | file_to_lose_on = (char *)NULL; | |
493 | return (full_path); | |
494 | } | |
495 | ||
496 | /* The file is not executable, but it does exist. If we prefer | |
497 | an executable, then remember this one if it is the first one | |
498 | we have found. */ | |
499 | if ((flags & FS_EXEC_PREFERRED) && file_to_lose_on == 0) | |
500 | file_to_lose_on = savestring (full_path); | |
501 | ||
502 | /* If we want only executable files, or we don't want directories and | |
95732b49 JA |
503 | this file is a directory, or we want a readable file and this file |
504 | isn't readable, fail. */ | |
505 | if ((flags & (FS_EXEC_ONLY|FS_EXEC_PREFERRED)) || | |
506 | ((flags & FS_NODIRS) && (status & FS_DIRECTORY)) || | |
507 | ((flags & FS_READABLE) && (status & FS_READABLE) == 0)) | |
cce855bc JA |
508 | { |
509 | free (full_path); | |
510 | return ((char *)NULL); | |
511 | } | |
512 | else | |
513 | return (full_path); | |
514 | } | |
515 | ||
516 | /* This does the dirty work for find_user_command_internal () and | |
517 | user_command_matches (). | |
518 | NAME is the name of the file to search for. | |
519 | PATH_LIST is a colon separated list of directories to search. | |
520 | FLAGS contains bit fields which control the files which are eligible. | |
521 | Some values are: | |
522 | FS_EXEC_ONLY: The file must be an executable to be found. | |
523 | FS_EXEC_PREFERRED: If we can't find an executable, then the | |
524 | the first file matching NAME will do. | |
525 | FS_EXISTS: The first file found will do. | |
526 | FS_NODIRS: Don't find any directories. | |
527 | */ | |
528 | static char * | |
529 | find_user_command_in_path (name, path_list, flags) | |
f73dda09 | 530 | const char *name; |
cce855bc JA |
531 | char *path_list; |
532 | int flags; | |
533 | { | |
534 | char *full_path, *path; | |
535 | int path_index, name_len; | |
536 | struct stat dotinfo; | |
537 | ||
538 | /* We haven't started looking, so we certainly haven't seen | |
539 | a `.' as the directory path yet. */ | |
540 | dot_found_in_search = 0; | |
541 | ||
542 | if (absolute_program (name)) | |
543 | { | |
544 | full_path = find_absolute_program (name, flags); | |
545 | return (full_path); | |
546 | } | |
547 | ||
548 | if (path_list == 0 || *path_list == '\0') | |
549 | return (savestring (name)); /* XXX */ | |
550 | ||
551 | file_to_lose_on = (char *)NULL; | |
552 | name_len = strlen (name); | |
553 | stat (".", &dotinfo); | |
554 | path_index = 0; | |
555 | ||
556 | while (path_list[path_index]) | |
557 | { | |
558 | /* Allow the user to interrupt out of a lengthy path search. */ | |
559 | QUIT; | |
560 | ||
561 | path = get_next_path_element (path_list, &path_index); | |
562 | if (path == 0) | |
563 | break; | |
564 | ||
565 | /* Side effects: sets dot_found_in_search, possibly sets | |
566 | file_to_lose_on. */ | |
567 | full_path = find_in_path_element (name, path, flags, name_len, &dotinfo); | |
568 | free (path); | |
569 | ||
570 | /* This should really be in find_in_path_element, but there isn't the | |
571 | right combination of flags. */ | |
572 | if (full_path && is_directory (full_path)) | |
573 | { | |
574 | free (full_path); | |
575 | continue; | |
576 | } | |
577 | ||
578 | if (full_path) | |
579 | { | |
580 | FREE (file_to_lose_on); | |
581 | return (full_path); | |
582 | } | |
583 | } | |
584 | ||
585 | /* We didn't find exactly what the user was looking for. Return | |
586 | the contents of FILE_TO_LOSE_ON which is NULL when the search | |
587 | required an executable, or non-NULL if a file was found and the | |
28ef6c31 JA |
588 | search would accept a non-executable as a last resort. If the |
589 | caller specified FS_NODIRS, and file_to_lose_on is a directory, | |
590 | return NULL. */ | |
591 | if (file_to_lose_on && (flags & FS_NODIRS) && is_directory (file_to_lose_on)) | |
592 | { | |
593 | free (file_to_lose_on); | |
594 | file_to_lose_on = (char *)NULL; | |
595 | } | |
596 | ||
cce855bc JA |
597 | return (file_to_lose_on); |
598 | } |