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 e08cc72d 2019-02-05 stsp #include <sys/queue.h>
20 0cd1c46a 2019-03-11 stsp #include <sys/stat.h>
22 0cd1c46a 2019-03-11 stsp #include <errno.h>
23 2c7829a4 2019-06-17 stsp #include <fcntl.h>
24 4027f31a 2017-11-04 stsp #include <limits.h>
25 0cd1c46a 2019-03-11 stsp #include <libgen.h>
26 4027f31a 2017-11-04 stsp #include <stdlib.h>
27 4027f31a 2017-11-04 stsp #include <unistd.h>
28 4027f31a 2017-11-04 stsp #include <stdio.h>
29 4027f31a 2017-11-04 stsp #include <string.h>
30 3c45a30a 2019-05-12 jcs #include <dirent.h>
31 0ee7065d 2019-05-13 stsp #include <paths.h>
33 9d31a1d8 2018-03-11 stsp #include "got_error.h"
34 324d37e7 2019-05-11 stsp #include "got_path.h"
37 e0159033 2019-01-08 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
41 4027f31a 2017-11-04 stsp got_path_is_absolute(const char *path)
43 4027f31a 2017-11-04 stsp return path[0] == '/';
46 f7d20e89 2018-06-17 stsp /* based on canonpath() from kern_pledge.c */
47 f7d20e89 2018-06-17 stsp const struct got_error *
48 e6eac3b8 2018-06-17 stsp got_canonpath(const char *input, char *buf, size_t bufsize)
50 e6eac3b8 2018-06-17 stsp const char *p;
53 e6eac3b8 2018-06-17 stsp /* can't canon relative paths, don't bother */
54 e6eac3b8 2018-06-17 stsp if (!got_path_is_absolute(input)) {
55 e6eac3b8 2018-06-17 stsp if (strlcpy(buf, input, bufsize) >= bufsize)
56 f7d20e89 2018-06-17 stsp return got_error(GOT_ERR_NO_SPACE);
57 f7d20e89 2018-06-17 stsp return NULL;
62 e6eac3b8 2018-06-17 stsp while (*p && (q - buf < bufsize)) {
63 e6eac3b8 2018-06-17 stsp if (p[0] == '/' && (p[1] == '/' || p[1] == '\0')) {
66 e6eac3b8 2018-06-17 stsp } else if (p[0] == '/' && p[1] == '.' &&
67 e6eac3b8 2018-06-17 stsp (p[2] == '/' || p[2] == '\0')) {
70 e6eac3b8 2018-06-17 stsp } else if (p[0] == '/' && p[1] == '.' && p[2] == '.' &&
71 e6eac3b8 2018-06-17 stsp (p[3] == '/' || p[3] == '\0')) {
73 e6eac3b8 2018-06-17 stsp if (q != buf) /* "/../" at start of buf */
74 e6eac3b8 2018-06-17 stsp while (*--q != '/')
78 e6eac3b8 2018-06-17 stsp *q++ = *p++;
81 e6eac3b8 2018-06-17 stsp if ((*p == '\0') && (q - buf < bufsize)) {
83 f7d20e89 2018-06-17 stsp return NULL;
85 f7d20e89 2018-06-17 stsp return got_error(GOT_ERR_NO_SPACE);
88 04ca23f4 2018-07-16 stsp const struct got_error *
89 04ca23f4 2018-07-16 stsp got_path_skip_common_ancestor(char **child, const char *parent_abspath,
90 04ca23f4 2018-07-16 stsp const char *abspath)
92 04ca23f4 2018-07-16 stsp const struct got_error *err = NULL;
93 04ca23f4 2018-07-16 stsp size_t len_parent, len, bufsize;
95 db5ba8ed 2019-03-26 stsp *child = NULL;
97 04ca23f4 2018-07-16 stsp len_parent = strlen(parent_abspath);
98 04ca23f4 2018-07-16 stsp len = strlen(abspath);
99 04ca23f4 2018-07-16 stsp if (len_parent >= len)
100 63f810e6 2020-02-29 stsp return got_error_path(abspath, GOT_ERR_BAD_PATH);
101 04ca23f4 2018-07-16 stsp if (strncmp(parent_abspath, abspath, len_parent) != 0)
102 63f810e6 2020-02-29 stsp return got_error_path(abspath, GOT_ERR_BAD_PATH);
103 eb4304b9 2019-05-09 stsp if (!got_path_is_root_dir(parent_abspath) && abspath[len_parent] != '/')
104 63f810e6 2020-02-29 stsp return got_error_path(abspath, GOT_ERR_BAD_PATH);
105 5e3ce57a 2019-03-26 stsp while (abspath[len_parent] == '/')
107 04ca23f4 2018-07-16 stsp bufsize = len - len_parent + 1;
108 04ca23f4 2018-07-16 stsp *child = malloc(bufsize);
109 04ca23f4 2018-07-16 stsp if (*child == NULL)
110 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
111 04ca23f4 2018-07-16 stsp if (strlcpy(*child, abspath + len_parent, bufsize) >= bufsize) {
112 638f9024 2019-05-13 stsp err = got_error_from_errno("strlcpy");
113 04ca23f4 2018-07-16 stsp free(*child);
114 04ca23f4 2018-07-16 stsp *child = NULL;
115 04ca23f4 2018-07-16 stsp return err;
120 9d6cabd5 2022-04-07 op const struct got_error *
121 9d6cabd5 2022-04-07 op got_path_strip(char **out, const char *path, int n)
123 9d6cabd5 2022-04-07 op const char *p, *c;
128 c655fd93 2022-04-07 stsp while (n > 0 && (c = strchr(p, '/')) != NULL) {
134 9d6cabd5 2022-04-07 op return got_error_fmt(GOT_ERR_BAD_PATH,
135 c655fd93 2022-04-07 stsp "can't strip %d path-components from %s", n, path);
137 c655fd93 2022-04-07 stsp if ((*out = strdup(p)) == NULL)
138 9d6cabd5 2022-04-07 op return got_error_from_errno("strdup");
139 04ca23f4 2018-07-16 stsp return NULL;
143 31cedeaf 2018-09-15 stsp got_path_is_root_dir(const char *path)
145 b8b3f209 2020-02-29 stsp while (*path == '/')
147 b8b3f209 2020-02-29 stsp return (*path == '\0');
151 a129376b 2019-03-28 stsp got_path_is_current_dir(const char *path)
153 a129376b 2019-03-28 stsp return (path[0] == '.' && path[1] == '\0');
157 8da9e5f4 2019-01-12 stsp got_path_is_child(const char *child, const char *parent, size_t parent_len)
159 eb4304b9 2019-05-09 stsp if (parent_len == 0 || got_path_is_root_dir(parent))
162 8da9e5f4 2019-01-12 stsp if (strncmp(parent, child, parent_len) != 0)
164 8da9e5f4 2019-01-12 stsp if (child[parent_len] != '/')
171 d572f586 2019-08-02 stsp got_path_cmp(const char *path1, const char *path2, size_t len1, size_t len2)
173 466d3b32 2019-08-02 stsp size_t min_len;
174 e0159033 2019-01-08 stsp size_t i = 0;
176 e08cc72d 2019-02-05 stsp /* Leading directory separators are insignificant. */
177 466d3b32 2019-08-02 stsp while (path1[0] == '/') {
181 466d3b32 2019-08-02 stsp while (path2[0] == '/') {
186 e08cc72d 2019-02-05 stsp min_len = MIN(len1, len2);
188 e0159033 2019-01-08 stsp /* Skip over common prefix. */
189 e0159033 2019-01-08 stsp while (i < min_len && path1[i] == path2[i])
192 e08cc72d 2019-02-05 stsp /* Are the paths exactly equal (besides path separators)? */
193 e0159033 2019-01-08 stsp if (len1 == len2 && i >= min_len)
196 e08cc72d 2019-02-05 stsp /* Skip over redundant trailing path seperators. */
197 e08cc72d 2019-02-05 stsp while (path1[i] == '/' && path1[i + 1] == '/')
199 e08cc72d 2019-02-05 stsp while (path2[i] == '/' && path2[i + 1] == '/')
202 e08cc72d 2019-02-05 stsp /* Trailing path separators are insignificant. */
203 e08cc72d 2019-02-05 stsp if (path1[i] == '/' && path1[i + 1] == '\0' && path2[i] == '\0')
205 e08cc72d 2019-02-05 stsp if (path2[i] == '/' && path2[i + 1] == '\0' && path1[i] == '\0')
208 e0159033 2019-01-08 stsp /* Order children in subdirectories directly after their parents. */
209 e0159033 2019-01-08 stsp if (path1[i] == '/' && path2[i] == '\0')
211 e0159033 2019-01-08 stsp if (path2[i] == '/' && path1[i] == '\0')
213 e08cc72d 2019-02-05 stsp if (path1[i] == '/' && path2[i] != '\0')
215 e08cc72d 2019-02-05 stsp if (path2[i] == '/' && path1[i] != '\0')
218 e0159033 2019-01-08 stsp /* Next character following the common prefix determines order. */
219 e0159033 2019-01-08 stsp return (unsigned char)path1[i] < (unsigned char)path2[i] ? -1 : 1;
222 e08cc72d 2019-02-05 stsp const struct got_error *
223 7e5c804b 2019-02-05 stsp got_pathlist_insert(struct got_pathlist_entry **inserted,
224 3d8df59c 2019-02-05 stsp struct got_pathlist_head *pathlist, const char *path, void *data)
226 e08cc72d 2019-02-05 stsp struct got_pathlist_entry *new, *pe;
227 e1f5d7cf 2022-05-19 stsp size_t path_len = strlen(path);
229 7e5c804b 2019-02-05 stsp if (inserted)
230 7e5c804b 2019-02-05 stsp *inserted = NULL;
233 e08cc72d 2019-02-05 stsp * Many callers will provide paths in a somewhat sorted order while
234 e08cc72d 2019-02-05 stsp * constructing a path list from inputs such as tree objects or
235 e08cc72d 2019-02-05 stsp * dirents. Iterating backwards from the tail of the list should
236 e08cc72d 2019-02-05 stsp * be more efficient than traversing through the entire list each
237 e08cc72d 2019-02-05 stsp * time an element is inserted.
239 e08cc72d 2019-02-05 stsp pe = TAILQ_LAST(pathlist, got_pathlist_head);
240 e08cc72d 2019-02-05 stsp while (pe) {
241 e1f5d7cf 2022-05-19 stsp int cmp = got_path_cmp(pe->path, path, pe->path_len, path_len);
242 e1f5d7cf 2022-05-19 stsp if (cmp == 0)
243 e1f5d7cf 2022-05-19 stsp return NULL; /* duplicate */
244 e1f5d7cf 2022-05-19 stsp else if (cmp < 0)
246 e08cc72d 2019-02-05 stsp pe = TAILQ_PREV(pe, got_pathlist_head, entry);
249 e1f5d7cf 2022-05-19 stsp new = malloc(sizeof(*new));
250 e1f5d7cf 2022-05-19 stsp if (new == NULL)
251 e1f5d7cf 2022-05-19 stsp return got_error_from_errno("malloc");
252 e1f5d7cf 2022-05-19 stsp new->path = path;
253 e1f5d7cf 2022-05-19 stsp new->path_len = path_len;
254 e1f5d7cf 2022-05-19 stsp new->data = data;
256 e1f5d7cf 2022-05-19 stsp TAILQ_INSERT_AFTER(pathlist, pe, new, entry);
258 e1f5d7cf 2022-05-19 stsp TAILQ_INSERT_HEAD(pathlist, new, entry);
259 7e5c804b 2019-02-05 stsp if (inserted)
260 7e5c804b 2019-02-05 stsp *inserted = new;
261 e08cc72d 2019-02-05 stsp return NULL;
264 72ea6654 2019-07-27 stsp const struct got_error *
265 adc19d55 2019-07-28 stsp got_pathlist_append(struct got_pathlist_head *pathlist,
266 adc19d55 2019-07-28 stsp const char *path, void *data)
268 72ea6654 2019-07-27 stsp struct got_pathlist_entry *new;
270 72ea6654 2019-07-27 stsp new = malloc(sizeof(*new));
271 72ea6654 2019-07-27 stsp if (new == NULL)
272 72ea6654 2019-07-27 stsp return got_error_from_errno("malloc");
273 72ea6654 2019-07-27 stsp new->path = path;
274 f2b16ada 2019-08-02 stsp new->path_len = strlen(path);
275 72ea6654 2019-07-27 stsp new->data = data;
276 72ea6654 2019-07-27 stsp TAILQ_INSERT_TAIL(pathlist, new, entry);
277 72ea6654 2019-07-27 stsp return NULL;
281 e08cc72d 2019-02-05 stsp got_pathlist_free(struct got_pathlist_head *pathlist)
283 e08cc72d 2019-02-05 stsp struct got_pathlist_entry *pe;
285 e08cc72d 2019-02-05 stsp while ((pe = TAILQ_FIRST(pathlist)) != NULL) {
286 e08cc72d 2019-02-05 stsp TAILQ_REMOVE(pathlist, pe, entry);
291 0cd1c46a 2019-03-11 stsp static const struct got_error *
292 0cd1c46a 2019-03-11 stsp make_parent_dirs(const char *abspath)
294 0cd1c46a 2019-03-11 stsp const struct got_error *err = NULL;
295 d1667f0d 2019-03-11 stsp char *parent;
297 d1667f0d 2019-03-11 stsp err = got_path_dirname(&parent, abspath);
299 d1667f0d 2019-03-11 stsp return err;
301 0cd1c46a 2019-03-11 stsp if (mkdir(parent, GOT_DEFAULT_DIR_MODE) == -1) {
302 0cd1c46a 2019-03-11 stsp if (errno == ENOENT) {
303 0cd1c46a 2019-03-11 stsp err = make_parent_dirs(parent);
306 5e1c9f23 2019-03-11 stsp if (mkdir(parent, GOT_DEFAULT_DIR_MODE) == -1) {
307 638f9024 2019-05-13 stsp err = got_error_from_errno2("mkdir", parent);
311 638f9024 2019-05-13 stsp err = got_error_from_errno2("mkdir", parent);
314 5e1c9f23 2019-03-11 stsp free(parent);
315 0cd1c46a 2019-03-11 stsp return err;
318 0cd1c46a 2019-03-11 stsp const struct got_error *
319 0cd1c46a 2019-03-11 stsp got_path_mkdir(const char *abspath)
321 0cd1c46a 2019-03-11 stsp const struct got_error *err = NULL;
323 0cd1c46a 2019-03-11 stsp if (mkdir(abspath, GOT_DEFAULT_DIR_MODE) == -1) {
324 ddcd8544 2019-03-11 stsp if (errno == ENOENT) {
325 0cd1c46a 2019-03-11 stsp err = make_parent_dirs(abspath);
328 0cd1c46a 2019-03-11 stsp if (mkdir(abspath, GOT_DEFAULT_DIR_MODE) == -1)
329 638f9024 2019-05-13 stsp err = got_error_from_errno2("mkdir", abspath);
331 638f9024 2019-05-13 stsp err = got_error_from_errno2("mkdir", abspath);
335 0cd1c46a 2019-03-11 stsp return err;
339 280f921b 2019-05-12 stsp got_path_dir_is_empty(const char *dir)
342 3c45a30a 2019-05-12 jcs struct dirent *dent;
343 3c45a30a 2019-05-12 jcs int empty = 1;
345 3c45a30a 2019-05-12 jcs d = opendir(dir);
346 3c45a30a 2019-05-12 jcs if (d == NULL)
349 3c45a30a 2019-05-12 jcs while ((dent = readdir(d)) != NULL) {
350 3c45a30a 2019-05-12 jcs if (strcmp(dent->d_name, ".") == 0 ||
351 3c45a30a 2019-05-12 jcs strcmp(dent->d_name, "..") == 0)
358 7f2a8dc2 2019-05-12 stsp closedir(d);
359 3c45a30a 2019-05-12 jcs return empty;
362 d1667f0d 2019-03-11 stsp const struct got_error *
363 d1667f0d 2019-03-11 stsp got_path_dirname(char **parent, const char *path)
365 0c4004e3 2020-10-20 stsp char buf[PATH_MAX];
368 0c4004e3 2020-10-20 stsp if (strlcpy(buf, path, sizeof(buf)) >= sizeof(buf))
369 0c4004e3 2020-10-20 stsp return got_error(GOT_ERR_NO_SPACE);
371 0c4004e3 2020-10-20 stsp p = dirname(buf);
372 d1667f0d 2019-03-11 stsp if (p == NULL)
373 638f9024 2019-05-13 stsp return got_error_from_errno2("dirname", path);
375 d1667f0d 2019-03-11 stsp if (p[0] == '.' && p[1] == '\0')
376 63f810e6 2020-02-29 stsp return got_error_path(path, GOT_ERR_BAD_PATH);
378 d1667f0d 2019-03-11 stsp *parent = strdup(p);
379 d1667f0d 2019-03-11 stsp if (*parent == NULL)
380 f2ea84fa 2019-07-27 stsp return got_error_from_errno("strdup");
382 f2ea84fa 2019-07-27 stsp return NULL;
385 f2ea84fa 2019-07-27 stsp const struct got_error *
386 20ccae39 2020-07-21 stsp got_path_dirent_type(int *type, const char *path_parent, struct dirent *dent)
388 20ccae39 2020-07-21 stsp const struct got_error *err = NULL;
389 20ccae39 2020-07-21 stsp char *path_child;
390 20ccae39 2020-07-21 stsp struct stat sb;
392 20ccae39 2020-07-21 stsp if (dent->d_type != DT_UNKNOWN) {
393 20ccae39 2020-07-21 stsp *type = dent->d_type;
394 20ccae39 2020-07-21 stsp return NULL;
397 20ccae39 2020-07-21 stsp *type = DT_UNKNOWN;
400 20ccae39 2020-07-21 stsp * This is a fallback to accommodate filesystems which do not
401 20ccae39 2020-07-21 stsp * provide directory entry type information. DT_UNKNOWN directory
402 20ccae39 2020-07-21 stsp * entries occur on NFS mounts without "readdir plus" RPC.
405 20ccae39 2020-07-21 stsp if (asprintf(&path_child, "%s/%s", path_parent, dent->d_name) == -1)
406 20ccae39 2020-07-21 stsp return got_error_from_errno("asprintf");
408 20ccae39 2020-07-21 stsp if (lstat(path_child, &sb) == -1) {
409 20ccae39 2020-07-21 stsp err = got_error_from_errno2("lstat", path_child);
413 20ccae39 2020-07-21 stsp if (S_ISFIFO(sb.st_mode))
414 20ccae39 2020-07-21 stsp *type = DT_FIFO;
415 20ccae39 2020-07-21 stsp else if (S_ISCHR(sb.st_mode))
416 20ccae39 2020-07-21 stsp *type = DT_CHR;
417 20ccae39 2020-07-21 stsp else if (S_ISDIR(sb.st_mode))
418 20ccae39 2020-07-21 stsp *type = DT_DIR;
419 20ccae39 2020-07-21 stsp else if (S_ISBLK(sb.st_mode))
420 20ccae39 2020-07-21 stsp *type = DT_BLK;
421 20ccae39 2020-07-21 stsp else if (S_ISLNK(sb.st_mode))
422 20ccae39 2020-07-21 stsp *type = DT_LNK;
423 20ccae39 2020-07-21 stsp else if (S_ISREG(sb.st_mode))
424 20ccae39 2020-07-21 stsp *type = DT_REG;
425 20ccae39 2020-07-21 stsp else if (S_ISSOCK(sb.st_mode))
426 20ccae39 2020-07-21 stsp *type = DT_SOCK;
428 20ccae39 2020-07-21 stsp free(path_child);
429 20ccae39 2020-07-21 stsp return err;
432 20ccae39 2020-07-21 stsp const struct got_error *
433 f2ea84fa 2019-07-27 stsp got_path_basename(char **s, const char *path)
435 0a9483d0 2020-10-19 stsp char buf[PATH_MAX];
436 f2ea84fa 2019-07-27 stsp char *base;
438 0a9483d0 2020-10-19 stsp if (strlcpy(buf, path, sizeof(buf)) >= sizeof(buf))
439 0a9483d0 2020-10-19 stsp return got_error(GOT_ERR_NO_SPACE);
441 0a9483d0 2020-10-19 stsp base = basename(buf);
442 f2ea84fa 2019-07-27 stsp if (base == NULL)
443 f2ea84fa 2019-07-27 stsp return got_error_from_errno2("basename", path);
445 f2ea84fa 2019-07-27 stsp *s = strdup(base);
446 f2ea84fa 2019-07-27 stsp if (*s == NULL)
447 638f9024 2019-05-13 stsp return got_error_from_errno("strdup");
449 d1667f0d 2019-03-11 stsp return NULL;
453 72151b04 2019-05-11 stsp got_path_strip_trailing_slashes(char *path)
457 455de7fa 2020-01-12 tb x = strlen(path);
458 455de7fa 2020-01-12 tb while (x-- > 0 && path[x] == '/')
459 72151b04 2019-05-11 stsp path[x] = '\0';
462 0f71f619 2022-01-06 stsp /* based on findprog() from usr.bin/which/which.c */
463 0ee7065d 2019-05-13 stsp const struct got_error *
464 0ee7065d 2019-05-13 stsp got_path_find_prog(char **filename, const char *prog)
466 202329ae 2019-08-11 stsp const struct got_error *err = NULL;
469 0ee7065d 2019-05-13 stsp struct stat sbuf;
470 0ee7065d 2019-05-13 stsp char *path, *pathcpy;
472 0ee7065d 2019-05-13 stsp *filename = NULL;
474 0ee7065d 2019-05-13 stsp path = getenv("PATH");
475 0ee7065d 2019-05-13 stsp if (path == NULL)
476 0ee7065d 2019-05-13 stsp path = _PATH_DEFPATH;
478 0ee7065d 2019-05-13 stsp /* Special case if prog contains '/' */
479 0ee7065d 2019-05-13 stsp if (strchr(prog, '/')) {
480 0ee7065d 2019-05-13 stsp if ((stat(prog, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&
481 0ee7065d 2019-05-13 stsp access(prog, X_OK) == 0) {
482 0ee7065d 2019-05-13 stsp *filename = strdup(prog);
483 0ee7065d 2019-05-13 stsp if (*filename == NULL)
484 0ee7065d 2019-05-13 stsp return got_error_from_errno("strdup");
486 0ee7065d 2019-05-13 stsp return NULL;
489 0ee7065d 2019-05-13 stsp if ((path = strdup(path)) == NULL)
490 0ee7065d 2019-05-13 stsp return got_error_from_errno("strdup");
491 0ee7065d 2019-05-13 stsp pathcpy = path;
493 0ee7065d 2019-05-13 stsp while ((p = strsep(&pathcpy, ":")) != NULL) {
494 0ee7065d 2019-05-13 stsp if (*p == '\0')
497 0ee7065d 2019-05-13 stsp len = strlen(p);
498 0ee7065d 2019-05-13 stsp while (len > 0 && p[len-1] == '/')
499 0ee7065d 2019-05-13 stsp p[--len] = '\0'; /* strip trailing '/' */
501 0ee7065d 2019-05-13 stsp if (asprintf(filename, "%s/%s", p, prog) == -1) {
502 202329ae 2019-08-11 stsp err = got_error_from_errno("asprintf");
505 0ee7065d 2019-05-13 stsp if ((stat(*filename, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&
506 718ef3e9 2019-08-11 stsp access(*filename, X_OK) == 0)
508 0ee7065d 2019-05-13 stsp free(*filename);
509 0ee7065d 2019-05-13 stsp *filename = NULL;
512 0ee7065d 2019-05-13 stsp free(path);
513 5cade901 2019-09-22 stsp return err;
516 2c7829a4 2019-06-17 stsp const struct got_error *
517 2c7829a4 2019-06-17 stsp got_path_create_file(const char *path, const char *content)
519 2c7829a4 2019-06-17 stsp const struct got_error *err = NULL;
520 2c7829a4 2019-06-17 stsp int fd = -1;
522 8bd0cdad 2021-12-31 stsp fd = open(path, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | O_CLOEXEC,
523 2c7829a4 2019-06-17 stsp GOT_DEFAULT_FILE_MODE);
524 2c7829a4 2019-06-17 stsp if (fd == -1) {
525 2c7829a4 2019-06-17 stsp err = got_error_from_errno2("open", path);
529 2c7829a4 2019-06-17 stsp if (content) {
530 2c7829a4 2019-06-17 stsp int len = dprintf(fd, "%s\n", content);
531 2c7829a4 2019-06-17 stsp if (len != strlen(content) + 1) {
532 2c7829a4 2019-06-17 stsp err = got_error_from_errno("dprintf");
538 2c7829a4 2019-06-17 stsp if (fd != -1 && close(fd) == -1 && err == NULL)
539 2c7829a4 2019-06-17 stsp err = got_error_from_errno("close");
540 2c7829a4 2019-06-17 stsp return err;
