diff options
Diffstat (limited to 'src/shared/util.c')
-rw-r--r-- | src/shared/util.c | 350 |
1 files changed, 6 insertions, 344 deletions
diff --git a/src/shared/util.c b/src/shared/util.c index a055ce197d..8a0b2a1b46 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -55,7 +55,6 @@ #include <glob.h> #include <grp.h> #include <sys/mman.h> -#include <sys/statvfs.h> #include "macro.h" #include "util.h" @@ -64,6 +63,7 @@ #include "log.h" #include "strv.h" #include "label.h" +#include "path-util.h" #include "exit-status.h" #include "hashmap.h" @@ -486,21 +486,6 @@ char *split_quoted(const char *c, size_t *l, char **state) { return (char*) current; } -char **split_path_and_make_absolute(const char *p) { - char **l; - assert(p); - - if (!(l = strv_split(p, ":"))) - return NULL; - - if (!strv_path_make_absolute_cwd(l)) { - strv_free(l); - return NULL; - } - - return l; -} - int get_parent_of_pid(pid_t pid, pid_t *_ppid) { int r; FILE *f; @@ -1313,187 +1298,6 @@ int readlink_and_canonicalize(const char *p, char **r) { return 0; } -int parent_of_path(const char *path, char **_r) { - const char *e, *a = NULL, *b = NULL, *p; - char *r; - bool slash = false; - - assert(path); - assert(_r); - - if (!*path) - return -EINVAL; - - for (e = path; *e; e++) { - - if (!slash && *e == '/') { - a = b; - b = e; - slash = true; - } else if (slash && *e != '/') - slash = false; - } - - if (*(e-1) == '/') - p = a; - else - p = b; - - if (!p) - return -EINVAL; - - if (p == path) - r = strdup("/"); - else - r = strndup(path, p-path); - - if (!r) - return -ENOMEM; - - *_r = r; - return 0; -} - - -char *file_name_from_path(const char *p) { - char *r; - - assert(p); - - if ((r = strrchr(p, '/'))) - return r + 1; - - return (char*) p; -} - -bool path_is_absolute(const char *p) { - assert(p); - - return p[0] == '/'; -} - -bool is_path(const char *p) { - - return !!strchr(p, '/'); -} - -char *path_make_absolute(const char *p, const char *prefix) { - assert(p); - - /* Makes every item in the list an absolute path by prepending - * the prefix, if specified and necessary */ - - if (path_is_absolute(p) || !prefix) - return strdup(p); - - return join(prefix, "/", p, NULL); -} - -char *path_make_absolute_cwd(const char *p) { - char *cwd, *r; - - assert(p); - - /* Similar to path_make_absolute(), but prefixes with the - * current working directory. */ - - if (path_is_absolute(p)) - return strdup(p); - - if (!(cwd = get_current_dir_name())) - return NULL; - - r = path_make_absolute(p, cwd); - free(cwd); - - return r; -} - -char **strv_path_make_absolute_cwd(char **l) { - char **s; - - /* Goes through every item in the string list and makes it - * absolute. This works in place and won't rollback any - * changes on failure. */ - - STRV_FOREACH(s, l) { - char *t; - - if (!(t = path_make_absolute_cwd(*s))) - return NULL; - - free(*s); - *s = t; - } - - return l; -} - -char **strv_path_canonicalize(char **l) { - char **s; - unsigned k = 0; - bool enomem = false; - - if (strv_isempty(l)) - return l; - - /* Goes through every item in the string list and canonicalize - * the path. This works in place and won't rollback any - * changes on failure. */ - - STRV_FOREACH(s, l) { - char *t, *u; - - t = path_make_absolute_cwd(*s); - free(*s); - - if (!t) { - enomem = true; - continue; - } - - errno = 0; - u = canonicalize_file_name(t); - free(t); - - if (!u) { - if (errno == ENOMEM || !errno) - enomem = true; - - continue; - } - - l[k++] = u; - } - - l[k] = NULL; - - if (enomem) - return NULL; - - return l; -} - -char **strv_path_remove_empty(char **l) { - char **f, **t; - - if (!l) - return NULL; - - for (f = t = l; *f; f++) { - - if (dir_is_empty(*f) > 0) { - free(*f); - continue; - } - - *(t++) = *f; - } - - *t = NULL; - return l; -} - int reset_all_signal_handlers(void) { int sig; @@ -1972,107 +1776,6 @@ char *bus_path_unescape(const char *f) { return r; } -char *path_kill_slashes(char *path) { - char *f, *t; - bool slash = false; - - /* Removes redundant inner and trailing slashes. Modifies the - * passed string in-place. - * - * ///foo///bar/ becomes /foo/bar - */ - - for (f = path, t = path; *f; f++) { - - if (*f == '/') { - slash = true; - continue; - } - - if (slash) { - slash = false; - *(t++) = '/'; - } - - *(t++) = *f; - } - - /* Special rule, if we are talking of the root directory, a - trailing slash is good */ - - if (t == path && slash) - *(t++) = '/'; - - *t = 0; - return path; -} - -bool path_startswith(const char *path, const char *prefix) { - assert(path); - assert(prefix); - - if ((path[0] == '/') != (prefix[0] == '/')) - return false; - - for (;;) { - size_t a, b; - - path += strspn(path, "/"); - prefix += strspn(prefix, "/"); - - if (*prefix == 0) - return true; - - if (*path == 0) - return false; - - a = strcspn(path, "/"); - b = strcspn(prefix, "/"); - - if (a != b) - return false; - - if (memcmp(path, prefix, a) != 0) - return false; - - path += a; - prefix += b; - } -} - -bool path_equal(const char *a, const char *b) { - assert(a); - assert(b); - - if ((a[0] == '/') != (b[0] == '/')) - return false; - - for (;;) { - size_t j, k; - - a += strspn(a, "/"); - b += strspn(b, "/"); - - if (*a == 0 && *b == 0) - return true; - - if (*a == 0 || *b == 0) - return false; - - j = strcspn(a, "/"); - k = strcspn(b, "/"); - - if (j != k) - return false; - - if (memcmp(a, b, j) != 0) - return false; - - a += j; - b += k; - } -} - char *ascii_strlower(char *t) { char *p; @@ -2986,36 +2689,6 @@ ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll) { return n; } -int path_is_mount_point(const char *t, bool allow_symlink) { - struct stat a, b; - char *parent; - int r; - - if (allow_symlink) - r = stat(t, &a); - else - r = lstat(t, &a); - - if (r < 0) { - if (errno == ENOENT) - return 0; - - return -errno; - } - - r = parent_of_path(t, &parent); - if (r < 0) - return r; - - r = lstat(parent, &b); - free(parent); - - if (r < 0) - return -errno; - - return a.st_dev != b.st_dev; -} - int parse_usec(const char *t, usec_t *usec) { static const struct { const char *suffix; @@ -4746,7 +4419,7 @@ int fopen_temporary(const char *path, FILE **_f, char **_temp_path) { if (!t) return -ENOMEM; - fn = file_name_from_path(path); + fn = path_get_file_name(path); k = fn-path; memcpy(t, path, k); t[k] = '.'; @@ -4928,8 +4601,8 @@ int symlink_or_copy(const char *from, const char *to) { assert(from); assert(to); - if (parent_of_path(from, &pf) < 0 || - parent_of_path(to, &pt) < 0) { + if (path_get_parent(from, &pf) < 0 || + path_get_parent(to, &pt) < 0) { r = -ENOMEM; goto finish; } @@ -4976,7 +4649,7 @@ int symlink_or_copy_atomic(const char *from, const char *to) { if (!t) return -ENOMEM; - fn = file_name_from_path(to); + fn = path_get_file_name(to); k = fn-to; memcpy(t, to, k); t[k] = '.'; @@ -5218,7 +4891,7 @@ int in_search_path(const char *path, char **search) { char **i, *parent; int r; - r = parent_of_path(path, &parent); + r = path_get_parent(path, &parent); if (r < 0) return r; @@ -5857,17 +5530,6 @@ int setrlimit_closest(int resource, const struct rlimit *rlim) { return 0; } -int path_is_read_only_fs(const char *path) { - struct statvfs st; - - assert(path); - - if (statvfs(path, &st) < 0) - return -errno; - - return !!(st.f_flag & ST_RDONLY); -} - int getenv_for_pid(pid_t pid, const char *field, char **_value) { char path[sizeof("/proc/")-1+10+sizeof("/environ")], *value = NULL; int r; |