diff options
Diffstat (limited to 'src/shared')
| -rw-r--r-- | src/shared/path-util.c | 48 | ||||
| -rw-r--r-- | src/shared/path-util.h | 8 |
2 files changed, 56 insertions, 0 deletions
diff --git a/src/shared/path-util.c b/src/shared/path-util.c index 6888135778..8e108db531 100644 --- a/src/shared/path-util.c +++ b/src/shared/path-util.c @@ -425,3 +425,51 @@ int path_is_os_tree(const char *path) { return r < 0 ? 0 : 1; } + +int find_binary(const char *name, char **filename) { + assert(name); + if (strchr(name, '/')) { + char *p; + + if (path_is_absolute(name)) + p = strdup(name); + else + p = path_make_absolute_cwd(name); + if (!p) + return -ENOMEM; + + *filename = p; + return 0; + } else { + const char *path; + char *state, *w; + size_t l; + + /** + * Plain getenv, not secure_getenv, because we want + * to actually allow the user to pick the binary. + */ + path = getenv("PATH"); + if (!path) + path = DEFAULT_PATH; + + FOREACH_WORD_SEPARATOR(w, l, path, ":", state) { + char *p; + + if (asprintf(&p, "%.*s/%s", l, w, name) < 0) + return -ENOMEM; + + if (access(p, X_OK) < 0) { + free(p); + continue; + } + + path_kill_slashes(p); + *filename = p; + + return 0; + } + + return -ENOENT; + } +} diff --git a/src/shared/path-util.h b/src/shared/path-util.h index d187743769..9452931586 100644 --- a/src/shared/path-util.h +++ b/src/shared/path-util.h @@ -25,6 +25,12 @@ #include "macro.h" +#ifdef HAVE_SPLIT_USR +# define DEFAULT_PATH "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" +#else +# define DEFAULT_PATH "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin" +#endif + bool is_path(const char *p) _pure_; char** path_split_and_make_absolute(const char *p); char* path_get_file_name(const char *p) _pure_; @@ -43,3 +49,5 @@ char** path_strv_canonicalize_uniq(char **l); int path_is_mount_point(const char *path, bool allow_symlink); int path_is_read_only_fs(const char *path); int path_is_os_tree(const char *path); + +int find_binary(const char *name, char **filename); |