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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/basic/glob-util.c | |
parent | Initial commit. (diff) | |
download | systemd-b750101eb236130cf056c675997decbac904cc49.tar.xz systemd-b750101eb236130cf056c675997decbac904cc49.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/basic/glob-util.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/basic/glob-util.c b/src/basic/glob-util.c new file mode 100644 index 0000000..fd60a6e --- /dev/null +++ b/src/basic/glob-util.c @@ -0,0 +1,103 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + +#include "dirent-util.h" +#include "errno-util.h" +#include "glob-util.h" +#include "macro.h" +#include "path-util.h" +#include "strv.h" + +static void closedir_wrapper(void* v) { + (void) closedir(v); +} + +int safe_glob(const char *path, int flags, glob_t *pglob) { + int k; + + /* We want to set GLOB_ALTDIRFUNC ourselves, don't allow it to be set. */ + assert(!(flags & GLOB_ALTDIRFUNC)); + + if (!pglob->gl_closedir) + pglob->gl_closedir = closedir_wrapper; + if (!pglob->gl_readdir) + pglob->gl_readdir = (struct dirent *(*)(void *)) readdir_no_dot; + if (!pglob->gl_opendir) + pglob->gl_opendir = (void *(*)(const char *)) opendir; + if (!pglob->gl_lstat) + pglob->gl_lstat = lstat; + if (!pglob->gl_stat) + pglob->gl_stat = stat; + + errno = 0; + k = glob(path, flags | GLOB_ALTDIRFUNC, NULL, pglob); + if (k == GLOB_NOMATCH) + return -ENOENT; + if (k == GLOB_NOSPACE) + return -ENOMEM; + if (k != 0) + return errno_or_else(EIO); + if (strv_isempty(pglob->gl_pathv)) + return -ENOENT; + + return 0; +} + +int glob_first(const char *path, char **ret_first) { + _cleanup_globfree_ glob_t g = {}; + int k; + + assert(path); + + k = safe_glob(path, GLOB_NOSORT|GLOB_BRACE, &g); + if (k == -ENOENT) { + if (ret_first) + *ret_first = NULL; + return false; + } + if (k < 0) + return k; + + if (ret_first) { + char *first = strdup(g.gl_pathv[0]); + if (!first) + return log_oom_debug(); + *ret_first = first; + } + + return true; +} + +int glob_extend(char ***strv, const char *path, int flags) { + _cleanup_globfree_ glob_t g = {}; + int k; + + k = safe_glob(path, GLOB_NOSORT|GLOB_BRACE|flags, &g); + if (k < 0) + return k; + + return strv_extend_strv(strv, g.gl_pathv, false); +} + +int glob_non_glob_prefix(const char *path, char **ret) { + /* Return the path of the path that has no glob characters. */ + + size_t n = strcspn(path, GLOB_CHARS); + + if (path[n] != '\0') + while (n > 0 && path[n-1] != '/') + n--; + + if (n == 0) + return -ENOENT; + + char *ans = strndup(path, n); + if (!ans) + return -ENOMEM; + *ret = ans; + return 0; +} |