2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
3 e6eac3b8 2018-06-17 stsp * Copyright (c) 2015 Theo de Raadt <deraadt@openbsd.org>
4 0ee7065d 2019-05-13 stsp * Copyright (c) 1997 Todd C. Miller <millert@openbsd.org>
6 7b19e0f1 2017-11-05 stsp * Permission to use, copy, modify, and distribute this software for any
7 7b19e0f1 2017-11-05 stsp * purpose with or without fee is hereby granted, provided that the above
8 7b19e0f1 2017-11-05 stsp * copyright notice and this permission notice appear in all copies.
10 7b19e0f1 2017-11-05 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 7b19e0f1 2017-11-05 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 7b19e0f1 2017-11-05 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 7b19e0f1 2017-11-05 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 7b19e0f1 2017-11-05 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 7b19e0f1 2017-11-05 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 7b19e0f1 2017-11-05 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 0cd1c46a 2019-03-11 stsp #include <sys/stat.h>
21 0cd1c46a 2019-03-11 stsp #include <errno.h>
22 2c7829a4 2019-06-17 stsp #include <fcntl.h>
23 4027f31a 2017-11-04 stsp #include <limits.h>
24 0cd1c46a 2019-03-11 stsp #include <libgen.h>
25 4027f31a 2017-11-04 stsp #include <stdlib.h>
26 4027f31a 2017-11-04 stsp #include <unistd.h>
27 4027f31a 2017-11-04 stsp #include <stdio.h>
28 4027f31a 2017-11-04 stsp #include <string.h>
29 3c45a30a 2019-05-12 jcs #include <dirent.h>
30 0ee7065d 2019-05-13 stsp #include <paths.h>
32 dd038bc6 2021-09-21 thomas.ad #include "got_compat.h"
34 9d31a1d8 2018-03-11 stsp #include "got_error.h"
35 324d37e7 2019-05-11 stsp #include "got_path.h"
38 e0159033 2019-01-08 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
42 4027f31a 2017-11-04 stsp got_path_is_absolute(const char *path)
44 4027f31a 2017-11-04 stsp return path[0] == '/';
47 f7d20e89 2018-06-17 stsp /* based on canonpath() from kern_pledge.c */
48 f7d20e89 2018-06-17 stsp const struct got_error *
49 e6eac3b8 2018-06-17 stsp got_canonpath(const char *input, char *buf, size_t bufsize)
51 e6eac3b8 2018-06-17 stsp const char *p;
54 e6eac3b8 2018-06-17 stsp /* can't canon relative paths, don't bother */
55 e6eac3b8 2018-06-17 stsp if (!got_path_is_absolute(input)) {
56 e6eac3b8 2018-06-17 stsp if (strlcpy(buf, input, bufsize) >= bufsize)
57 f7d20e89 2018-06-17 stsp return got_error(GOT_ERR_NO_SPACE);
58 f7d20e89 2018-06-17 stsp return NULL;
63 e6eac3b8 2018-06-17 stsp while (*p && (q - buf < bufsize)) {
64 e6eac3b8 2018-06-17 stsp if (p[0] == '/' && (p[1] == '/' || p[1] == '\0')) {
67 e6eac3b8 2018-06-17 stsp } else if (p[0] == '/' && p[1] == '.' &&
68 e6eac3b8 2018-06-17 stsp (p[2] == '/' || p[2] == '\0')) {
71 e6eac3b8 2018-06-17 stsp } else if (p[0] == '/' && p[1] == '.' && p[2] == '.' &&
72 e6eac3b8 2018-06-17 stsp (p[3] == '/' || p[3] == '\0')) {
74 e6eac3b8 2018-06-17 stsp if (q != buf) /* "/../" at start of buf */
75 e6eac3b8 2018-06-17 stsp while (*--q != '/')
79 e6eac3b8 2018-06-17 stsp *q++ = *p++;
82 e6eac3b8 2018-06-17 stsp if ((*p == '\0') && (q - buf < bufsize)) {
84 f7d20e89 2018-06-17 stsp return NULL;
86 f7d20e89 2018-06-17 stsp return got_error(GOT_ERR_NO_SPACE);
89 04ca23f4 2018-07-16 stsp const struct got_error *
90 04ca23f4 2018-07-16 stsp got_path_skip_common_ancestor(char **child, const char *parent_abspath,
91 04ca23f4 2018-07-16 stsp const char *abspath)
93 04ca23f4 2018-07-16 stsp const struct got_error *err = NULL;
94 04ca23f4 2018-07-16 stsp size_t len_parent, len, bufsize;
96 db5ba8ed 2019-03-26 stsp *child = NULL;
98 04ca23f4 2018-07-16 stsp len_parent = strlen(parent_abspath);
99 04ca23f4 2018-07-16 stsp len = strlen(abspath);
100 04ca23f4 2018-07-16 stsp if (len_parent >= len)
101 63f810e6 2020-02-29 stsp return got_error_path(abspath, GOT_ERR_BAD_PATH);
102 04ca23f4 2018-07-16 stsp if (strncmp(parent_abspath, abspath, len_parent) != 0)
103 63f810e6 2020-02-29 stsp return got_error_path(abspath, GOT_ERR_BAD_PATH);
104 eb4304b9 2019-05-09 stsp if (!got_path_is_root_dir(parent_abspath) && abspath[len_parent] != '/')
105 63f810e6 2020-02-29 stsp return got_error_path(abspath, GOT_ERR_BAD_PATH);
106 5e3ce57a 2019-03-26 stsp while (abspath[len_parent] == '/')
108 04ca23f4 2018-07-16 stsp bufsize = len - len_parent + 1;
109 04ca23f4 2018-07-16 stsp *child = malloc(bufsize);
110 04ca23f4 2018-07-16 stsp if (*child == NULL)
111 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
112 04ca23f4 2018-07-16 stsp if (strlcpy(*child, abspath + len_parent, bufsize) >= bufsize) {
113 638f9024 2019-05-13 stsp err = got_error_from_errno("strlcpy");
114 04ca23f4 2018-07-16 stsp free(*child);
115 04ca23f4 2018-07-16 stsp *child = NULL;
116 04ca23f4 2018-07-16 stsp return err;
118 d9db2ff9 2022-04-16 thomas return NULL;
121 d9db2ff9 2022-04-16 thomas const struct got_error *
122 d9db2ff9 2022-04-16 thomas got_path_strip(char **out, const char *path, int n)
124 d9db2ff9 2022-04-16 thomas const char *p, *c;
126 d9db2ff9 2022-04-16 thomas p = path;
127 d9db2ff9 2022-04-16 thomas *out = NULL;
129 7472ca4e 2022-04-16 thomas while (n > 0 && (c = strchr(p, '/')) != NULL) {
130 7472ca4e 2022-04-16 thomas p = c + 1;
134 d9db2ff9 2022-04-16 thomas if (n > 0)
135 d9db2ff9 2022-04-16 thomas return got_error_fmt(GOT_ERR_BAD_PATH,
136 7472ca4e 2022-04-16 thomas "can't strip %d path-components from %s", n, path);
138 7472ca4e 2022-04-16 thomas if ((*out = strdup(p)) == NULL)
139 d9db2ff9 2022-04-16 thomas return got_error_from_errno("strdup");
140 04ca23f4 2018-07-16 stsp return NULL;
144 31cedeaf 2018-09-15 stsp got_path_is_root_dir(const char *path)
146 b8b3f209 2020-02-29 stsp while (*path == '/')
148 b8b3f209 2020-02-29 stsp return (*path == '\0');
152 a129376b 2019-03-28 stsp got_path_is_current_dir(const char *path)
154 a129376b 2019-03-28 stsp return (path[0] == '.' && path[1] == '\0');
158 8da9e5f4 2019-01-12 stsp got_path_is_child(const char *child, const char *parent, size_t parent_len)
160 eb4304b9 2019-05-09 stsp if (parent_len == 0 || got_path_is_root_dir(parent))
163 8da9e5f4 2019-01-12 stsp if (strncmp(parent, child, parent_len) != 0)
165 8da9e5f4 2019-01-12 stsp if (child[parent_len] != '/')
172 d572f586 2019-08-02 stsp got_path_cmp(const char *path1, const char *path2, size_t len1, size_t len2)
174 466d3b32 2019-08-02 stsp size_t min_len;
175 e0159033 2019-01-08 stsp size_t i = 0;
177 e08cc72d 2019-02-05 stsp /* Leading directory separators are insignificant. */
178 466d3b32 2019-08-02 stsp while (path1[0] == '/') {
182 466d3b32 2019-08-02 stsp while (path2[0] == '/') {
187 e08cc72d 2019-02-05 stsp min_len = MIN(len1, len2);
189 e0159033 2019-01-08 stsp /* Skip over common prefix. */
190 e0159033 2019-01-08 stsp while (i < min_len && path1[i] == path2[i])
193 e08cc72d 2019-02-05 stsp /* Are the paths exactly equal (besides path separators)? */
194 e0159033 2019-01-08 stsp if (len1 == len2 && i >= min_len)
197 e08cc72d 2019-02-05 stsp /* Skip over redundant trailing path seperators. */
198 e08cc72d 2019-02-05 stsp while (path1[i] == '/' && path1[i + 1] == '/')
200 e08cc72d 2019-02-05 stsp while (path2[i] == '/' && path2[i + 1] == '/')
203 e08cc72d 2019-02-05 stsp /* Trailing path separators are insignificant. */
204 e08cc72d 2019-02-05 stsp if (path1[i] == '/' && path1[i + 1] == '\0' && path2[i] == '\0')
206 e08cc72d 2019-02-05 stsp if (path2[i] == '/' && path2[i + 1] == '\0' && path1[i] == '\0')
209 e0159033 2019-01-08 stsp /* Order children in subdirectories directly after their parents. */
210 e0159033 2019-01-08 stsp if (path1[i] == '/' && path2[i] == '\0')
212 e0159033 2019-01-08 stsp if (path2[i] == '/' && path1[i] == '\0')
214 e08cc72d 2019-02-05 stsp if (path1[i] == '/' && path2[i] != '\0')
216 e08cc72d 2019-02-05 stsp if (path2[i] == '/' && path1[i] != '\0')
219 e0159033 2019-01-08 stsp /* Next character following the common prefix determines order. */
220 e0159033 2019-01-08 stsp return (unsigned char)path1[i] < (unsigned char)path2[i] ? -1 : 1;
223 e08cc72d 2019-02-05 stsp const struct got_error *
224 7e5c804b 2019-02-05 stsp got_pathlist_insert(struct got_pathlist_entry **inserted,
225 3d8df59c 2019-02-05 stsp struct got_pathlist_head *pathlist, const char *path, void *data)
227 e08cc72d 2019-02-05 stsp struct got_pathlist_entry *new, *pe;
228 b0d7d6cb 2022-05-19 thomas size_t path_len = strlen(path);
230 7e5c804b 2019-02-05 stsp if (inserted)
231 7e5c804b 2019-02-05 stsp *inserted = NULL;
234 e08cc72d 2019-02-05 stsp * Many callers will provide paths in a somewhat sorted order while
235 e08cc72d 2019-02-05 stsp * constructing a path list from inputs such as tree objects or
236 e08cc72d 2019-02-05 stsp * dirents. Iterating backwards from the tail of the list should
237 e08cc72d 2019-02-05 stsp * be more efficient than traversing through the entire list each
238 e08cc72d 2019-02-05 stsp * time an element is inserted.
240 e08cc72d 2019-02-05 stsp pe = TAILQ_LAST(pathlist, got_pathlist_head);
241 e08cc72d 2019-02-05 stsp while (pe) {
242 b0d7d6cb 2022-05-19 thomas int cmp = got_path_cmp(pe->path, path, pe->path_len, path_len);
243 b0d7d6cb 2022-05-19 thomas if (cmp == 0)
244 b0d7d6cb 2022-05-19 thomas return NULL; /* duplicate */
245 b0d7d6cb 2022-05-19 thomas else if (cmp < 0)
247 e08cc72d 2019-02-05 stsp pe = TAILQ_PREV(pe, got_pathlist_head, entry);
250 b0d7d6cb 2022-05-19 thomas new = malloc(sizeof(*new));
251 b0d7d6cb 2022-05-19 thomas if (new == NULL)
252 b0d7d6cb 2022-05-19 thomas return got_error_from_errno("malloc");
253 b0d7d6cb 2022-05-19 thomas new->path = path;
254 b0d7d6cb 2022-05-19 thomas new->path_len = path_len;
255 b0d7d6cb 2022-05-19 thomas new->data = data;
257 b0d7d6cb 2022-05-19 thomas TAILQ_INSERT_AFTER(pathlist, pe, new, entry);
259 b0d7d6cb 2022-05-19 thomas TAILQ_INSERT_HEAD(pathlist, new, entry);
260 7e5c804b 2019-02-05 stsp if (inserted)
261 7e5c804b 2019-02-05 stsp *inserted = new;
262 e08cc72d 2019-02-05 stsp return NULL;
265 72ea6654 2019-07-27 stsp const struct got_error *
266 adc19d55 2019-07-28 stsp got_pathlist_append(struct got_pathlist_head *pathlist,
267 adc19d55 2019-07-28 stsp const char *path, void *data)
269 72ea6654 2019-07-27 stsp struct got_pathlist_entry *new;
271 72ea6654 2019-07-27 stsp new = malloc(sizeof(*new));
272 72ea6654 2019-07-27 stsp if (new == NULL)
273 72ea6654 2019-07-27 stsp return got_error_from_errno("malloc");
274 72ea6654 2019-07-27 stsp new->path = path;
275 f2b16ada 2019-08-02 stsp new->path_len = strlen(path);
276 72ea6654 2019-07-27 stsp new->data = data;
277 72ea6654 2019-07-27 stsp TAILQ_INSERT_TAIL(pathlist, new, entry);
278 72ea6654 2019-07-27 stsp return NULL;
282 e08cc72d 2019-02-05 stsp got_pathlist_free(struct got_pathlist_head *pathlist)
284 e08cc72d 2019-02-05 stsp struct got_pathlist_entry *pe;
286 e08cc72d 2019-02-05 stsp while ((pe = TAILQ_FIRST(pathlist)) != NULL) {
287 e08cc72d 2019-02-05 stsp TAILQ_REMOVE(pathlist, pe, entry);
292 0cd1c46a 2019-03-11 stsp static const struct got_error *
293 0cd1c46a 2019-03-11 stsp make_parent_dirs(const char *abspath)
295 0cd1c46a 2019-03-11 stsp const struct got_error *err = NULL;
296 d1667f0d 2019-03-11 stsp char *parent;
298 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, abspath);
300 d1667f0d 2019-03-11 stsp return err;
302 0cd1c46a 2019-03-11 stsp if (mkdir(parent, GOT_DEFAULT_DIR_MODE) == -1) {
303 0cd1c46a 2019-03-11 stsp if (errno == ENOENT) {
304 0cd1c46a 2019-03-11 stsp err = make_parent_dirs(parent);
307 5e1c9f23 2019-03-11 stsp if (mkdir(parent, GOT_DEFAULT_DIR_MODE) == -1) {
308 638f9024 2019-05-13 stsp err = got_error_from_errno2("mkdir", parent);
312 638f9024 2019-05-13 stsp err = got_error_from_errno2("mkdir", parent);
315 5e1c9f23 2019-03-11 stsp free(parent);
316 0cd1c46a 2019-03-11 stsp return err;
319 0cd1c46a 2019-03-11 stsp const struct got_error *
320 0cd1c46a 2019-03-11 stsp got_path_mkdir(const char *abspath)
322 0cd1c46a 2019-03-11 stsp const struct got_error *err = NULL;
324 0cd1c46a 2019-03-11 stsp if (mkdir(abspath, GOT_DEFAULT_DIR_MODE) == -1) {
325 ddcd8544 2019-03-11 stsp if (errno == ENOENT) {
326 0cd1c46a 2019-03-11 stsp err = make_parent_dirs(abspath);
329 0cd1c46a 2019-03-11 stsp if (mkdir(abspath, GOT_DEFAULT_DIR_MODE) == -1)
330 638f9024 2019-05-13 stsp err = got_error_from_errno2("mkdir", abspath);
332 638f9024 2019-05-13 stsp err = got_error_from_errno2("mkdir", abspath);
336 0cd1c46a 2019-03-11 stsp return err;
340 280f921b 2019-05-12 stsp got_path_dir_is_empty(const char *dir)
343 3c45a30a 2019-05-12 jcs struct dirent *dent;
344 3c45a30a 2019-05-12 jcs int empty = 1;
346 3c45a30a 2019-05-12 jcs d = opendir(dir);
347 3c45a30a 2019-05-12 jcs if (d == NULL)
350 3c45a30a 2019-05-12 jcs while ((dent = readdir(d)) != NULL) {
351 3c45a30a 2019-05-12 jcs if (strcmp(dent->d_name, ".") == 0 ||
352 3c45a30a 2019-05-12 jcs strcmp(dent->d_name, "..") == 0)
359 7f2a8dc2 2019-05-12 stsp closedir(d);
360 3c45a30a 2019-05-12 jcs return empty;
363 d1667f0d 2019-03-11 stsp const struct got_error *
364 d1667f0d 2019-03-11 stsp got_path_dirname(char **parent, const char *path)
366 0c4004e3 2020-10-20 stsp char buf[PATH_MAX];
369 0c4004e3 2020-10-20 stsp if (strlcpy(buf, path, sizeof(buf)) >= sizeof(buf))
370 0c4004e3 2020-10-20 stsp return got_error(GOT_ERR_NO_SPACE);
372 0c4004e3 2020-10-20 stsp p = dirname(buf);
373 d1667f0d 2019-03-11 stsp if (p == NULL)
374 638f9024 2019-05-13 stsp return got_error_from_errno2("dirname", path);
376 d1667f0d 2019-03-11 stsp if (p[0] == '.' && p[1] == '\0')
377 63f810e6 2020-02-29 stsp return got_error_path(path, GOT_ERR_BAD_PATH);
379 d1667f0d 2019-03-11 stsp *parent = strdup(p);
380 d1667f0d 2019-03-11 stsp if (*parent == NULL)
381 f2ea84fa 2019-07-27 stsp return got_error_from_errno("strdup");
383 f2ea84fa 2019-07-27 stsp return NULL;
386 f2ea84fa 2019-07-27 stsp const struct got_error *
387 20ccae39 2020-07-21 stsp got_path_dirent_type(int *type, const char *path_parent, struct dirent *dent)
389 20ccae39 2020-07-21 stsp const struct got_error *err = NULL;
390 20ccae39 2020-07-21 stsp char *path_child;
391 20ccae39 2020-07-21 stsp struct stat sb;
393 20ccae39 2020-07-21 stsp if (dent->d_type != DT_UNKNOWN) {
394 20ccae39 2020-07-21 stsp *type = dent->d_type;
395 20ccae39 2020-07-21 stsp return NULL;
398 20ccae39 2020-07-21 stsp *type = DT_UNKNOWN;
401 20ccae39 2020-07-21 stsp * This is a fallback to accommodate filesystems which do not
402 20ccae39 2020-07-21 stsp * provide directory entry type information. DT_UNKNOWN directory
403 20ccae39 2020-07-21 stsp * entries occur on NFS mounts without "readdir plus" RPC.
406 20ccae39 2020-07-21 stsp if (asprintf(&path_child, "%s/%s", path_parent, dent->d_name) == -1)
407 20ccae39 2020-07-21 stsp return got_error_from_errno("asprintf");
409 20ccae39 2020-07-21 stsp if (lstat(path_child, &sb) == -1) {
410 20ccae39 2020-07-21 stsp err = got_error_from_errno2("lstat", path_child);
414 20ccae39 2020-07-21 stsp if (S_ISFIFO(sb.st_mode))
415 20ccae39 2020-07-21 stsp *type = DT_FIFO;
416 20ccae39 2020-07-21 stsp else if (S_ISCHR(sb.st_mode))
417 20ccae39 2020-07-21 stsp *type = DT_CHR;
418 20ccae39 2020-07-21 stsp else if (S_ISDIR(sb.st_mode))
419 20ccae39 2020-07-21 stsp *type = DT_DIR;
420 20ccae39 2020-07-21 stsp else if (S_ISBLK(sb.st_mode))
421 20ccae39 2020-07-21 stsp *type = DT_BLK;
422 20ccae39 2020-07-21 stsp else if (S_ISLNK(sb.st_mode))
423 20ccae39 2020-07-21 stsp *type = DT_LNK;
424 20ccae39 2020-07-21 stsp else if (S_ISREG(sb.st_mode))
425 20ccae39 2020-07-21 stsp *type = DT_REG;
426 20ccae39 2020-07-21 stsp else if (S_ISSOCK(sb.st_mode))
427 20ccae39 2020-07-21 stsp *type = DT_SOCK;
429 20ccae39 2020-07-21 stsp free(path_child);
430 20ccae39 2020-07-21 stsp return err;
433 20ccae39 2020-07-21 stsp const struct got_error *
434 f2ea84fa 2019-07-27 stsp got_path_basename(char **s, const char *path)
436 0a9483d0 2020-10-19 stsp char buf[PATH_MAX];
437 f2ea84fa 2019-07-27 stsp char *base;
439 0a9483d0 2020-10-19 stsp if (strlcpy(buf, path, sizeof(buf)) >= sizeof(buf))
440 0a9483d0 2020-10-19 stsp return got_error(GOT_ERR_NO_SPACE);
442 0a9483d0 2020-10-19 stsp base = basename(buf);
443 f2ea84fa 2019-07-27 stsp if (base == NULL)
444 f2ea84fa 2019-07-27 stsp return got_error_from_errno2("basename", path);
446 f2ea84fa 2019-07-27 stsp *s = strdup(base);
447 f2ea84fa 2019-07-27 stsp if (*s == NULL)
448 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
450 d1667f0d 2019-03-11 stsp return NULL;
454 72151b04 2019-05-11 stsp got_path_strip_trailing_slashes(char *path)
458 455de7fa 2020-01-12 tb x = strlen(path);
459 455de7fa 2020-01-12 tb while (x-- > 0 && path[x] == '/')
460 72151b04 2019-05-11 stsp path[x] = '\0';
463 7ffb205f 2022-01-06 thomas /* based on findprog() from usr.bin/which/which.c */
464 0ee7065d 2019-05-13 stsp const struct got_error *
465 0ee7065d 2019-05-13 stsp got_path_find_prog(char **filename, const char *prog)
467 202329ae 2019-08-11 stsp const struct got_error *err = NULL;
470 0ee7065d 2019-05-13 stsp struct stat sbuf;
471 0ee7065d 2019-05-13 stsp char *path, *pathcpy;
473 0ee7065d 2019-05-13 stsp *filename = NULL;
475 0ee7065d 2019-05-13 stsp path = getenv("PATH");
476 0ee7065d 2019-05-13 stsp if (path == NULL)
477 0ee7065d 2019-05-13 stsp path = _PATH_DEFPATH;
479 0ee7065d 2019-05-13 stsp /* Special case if prog contains '/' */
480 0ee7065d 2019-05-13 stsp if (strchr(prog, '/')) {
481 0ee7065d 2019-05-13 stsp if ((stat(prog, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&
482 0ee7065d 2019-05-13 stsp access(prog, X_OK) == 0) {
483 0ee7065d 2019-05-13 stsp *filename = strdup(prog);
484 0ee7065d 2019-05-13 stsp if (*filename == NULL)
485 0ee7065d 2019-05-13 stsp return got_error_from_errno("strdup");
487 0ee7065d 2019-05-13 stsp return NULL;
490 0ee7065d 2019-05-13 stsp if ((path = strdup(path)) == NULL)
491 0ee7065d 2019-05-13 stsp return got_error_from_errno("strdup");
492 0ee7065d 2019-05-13 stsp pathcpy = path;
494 0ee7065d 2019-05-13 stsp while ((p = strsep(&pathcpy, ":")) != NULL) {
495 0ee7065d 2019-05-13 stsp if (*p == '\0')
498 0ee7065d 2019-05-13 stsp len = strlen(p);
499 0ee7065d 2019-05-13 stsp while (len > 0 && p[len-1] == '/')
500 0ee7065d 2019-05-13 stsp p[--len] = '\0'; /* strip trailing '/' */
502 0ee7065d 2019-05-13 stsp if (asprintf(filename, "%s/%s", p, prog) == -1) {
503 202329ae 2019-08-11 stsp err = got_error_from_errno("asprintf");
506 0ee7065d 2019-05-13 stsp if ((stat(*filename, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&
507 718ef3e9 2019-08-11 stsp access(*filename, X_OK) == 0)
509 0ee7065d 2019-05-13 stsp free(*filename);
510 0ee7065d 2019-05-13 stsp *filename = NULL;
513 0ee7065d 2019-05-13 stsp free(path);
514 5cade901 2019-09-22 stsp return err;
517 2c7829a4 2019-06-17 stsp const struct got_error *
518 2c7829a4 2019-06-17 stsp got_path_create_file(const char *path, const char *content)
520 2c7829a4 2019-06-17 stsp const struct got_error *err = NULL;
521 2c7829a4 2019-06-17 stsp int fd = -1;
523 06340621 2021-12-31 thomas fd = open(path, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | O_CLOEXEC,
524 2c7829a4 2019-06-17 stsp GOT_DEFAULT_FILE_MODE);
525 2c7829a4 2019-06-17 stsp if (fd == -1) {
526 2c7829a4 2019-06-17 stsp err = got_error_from_errno2("open", path);
530 2c7829a4 2019-06-17 stsp if (content) {
531 2c7829a4 2019-06-17 stsp int len = dprintf(fd, "%s\n", content);
532 2c7829a4 2019-06-17 stsp if (len != strlen(content) + 1) {
533 2c7829a4 2019-06-17 stsp err = got_error_from_errno("dprintf");
539 2c7829a4 2019-06-17 stsp if (fd != -1 && close(fd) == -1 && err == NULL)
540 2c7829a4 2019-06-17 stsp err = got_error_from_errno("close");
541 2c7829a4 2019-06-17 stsp return err;
