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-rw-r--r--src/basic/util.c249
1 files changed, 0 insertions, 249 deletions
diff --git a/src/basic/util.c b/src/basic/util.c
index 607d9cd933..06fe307ba0 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -2137,237 +2137,6 @@ int update_reboot_param_file(const char *param) {
return 0;
}
-int umount_recursive(const char *prefix, int flags) {
- bool again;
- int n = 0, r;
-
- /* Try to umount everything recursively below a
- * directory. Also, take care of stacked mounts, and keep
- * unmounting them until they are gone. */
-
- do {
- _cleanup_fclose_ FILE *proc_self_mountinfo = NULL;
-
- again = false;
- r = 0;
-
- proc_self_mountinfo = fopen("/proc/self/mountinfo", "re");
- if (!proc_self_mountinfo)
- return -errno;
-
- for (;;) {
- _cleanup_free_ char *path = NULL, *p = NULL;
- int k;
-
- k = fscanf(proc_self_mountinfo,
- "%*s " /* (1) mount id */
- "%*s " /* (2) parent id */
- "%*s " /* (3) major:minor */
- "%*s " /* (4) root */
- "%ms " /* (5) mount point */
- "%*s" /* (6) mount options */
- "%*[^-]" /* (7) optional fields */
- "- " /* (8) separator */
- "%*s " /* (9) file system type */
- "%*s" /* (10) mount source */
- "%*s" /* (11) mount options 2 */
- "%*[^\n]", /* some rubbish at the end */
- &path);
- if (k != 1) {
- if (k == EOF)
- break;
-
- continue;
- }
-
- r = cunescape(path, UNESCAPE_RELAX, &p);
- if (r < 0)
- return r;
-
- if (!path_startswith(p, prefix))
- continue;
-
- if (umount2(p, flags) < 0) {
- r = -errno;
- continue;
- }
-
- again = true;
- n++;
-
- break;
- }
-
- } while (again);
-
- return r ? r : n;
-}
-
-static int get_mount_flags(const char *path, unsigned long *flags) {
- struct statvfs buf;
-
- if (statvfs(path, &buf) < 0)
- return -errno;
- *flags = buf.f_flag;
- return 0;
-}
-
-int bind_remount_recursive(const char *prefix, bool ro) {
- _cleanup_set_free_free_ Set *done = NULL;
- _cleanup_free_ char *cleaned = NULL;
- int r;
-
- /* Recursively remount a directory (and all its submounts)
- * read-only or read-write. If the directory is already
- * mounted, we reuse the mount and simply mark it
- * MS_BIND|MS_RDONLY (or remove the MS_RDONLY for read-write
- * operation). If it isn't we first make it one. Afterwards we
- * apply MS_BIND|MS_RDONLY (or remove MS_RDONLY) to all
- * submounts we can access, too. When mounts are stacked on
- * the same mount point we only care for each individual
- * "top-level" mount on each point, as we cannot
- * influence/access the underlying mounts anyway. We do not
- * have any effect on future submounts that might get
- * propagated, they migt be writable. This includes future
- * submounts that have been triggered via autofs. */
-
- cleaned = strdup(prefix);
- if (!cleaned)
- return -ENOMEM;
-
- path_kill_slashes(cleaned);
-
- done = set_new(&string_hash_ops);
- if (!done)
- return -ENOMEM;
-
- for (;;) {
- _cleanup_fclose_ FILE *proc_self_mountinfo = NULL;
- _cleanup_set_free_free_ Set *todo = NULL;
- bool top_autofs = false;
- char *x;
- unsigned long orig_flags;
-
- todo = set_new(&string_hash_ops);
- if (!todo)
- return -ENOMEM;
-
- proc_self_mountinfo = fopen("/proc/self/mountinfo", "re");
- if (!proc_self_mountinfo)
- return -errno;
-
- for (;;) {
- _cleanup_free_ char *path = NULL, *p = NULL, *type = NULL;
- int k;
-
- k = fscanf(proc_self_mountinfo,
- "%*s " /* (1) mount id */
- "%*s " /* (2) parent id */
- "%*s " /* (3) major:minor */
- "%*s " /* (4) root */
- "%ms " /* (5) mount point */
- "%*s" /* (6) mount options (superblock) */
- "%*[^-]" /* (7) optional fields */
- "- " /* (8) separator */
- "%ms " /* (9) file system type */
- "%*s" /* (10) mount source */
- "%*s" /* (11) mount options (bind mount) */
- "%*[^\n]", /* some rubbish at the end */
- &path,
- &type);
- if (k != 2) {
- if (k == EOF)
- break;
-
- continue;
- }
-
- r = cunescape(path, UNESCAPE_RELAX, &p);
- if (r < 0)
- return r;
-
- /* Let's ignore autofs mounts. If they aren't
- * triggered yet, we want to avoid triggering
- * them, as we don't make any guarantees for
- * future submounts anyway. If they are
- * already triggered, then we will find
- * another entry for this. */
- if (streq(type, "autofs")) {
- top_autofs = top_autofs || path_equal(cleaned, p);
- continue;
- }
-
- if (path_startswith(p, cleaned) &&
- !set_contains(done, p)) {
-
- r = set_consume(todo, p);
- p = NULL;
-
- if (r == -EEXIST)
- continue;
- if (r < 0)
- return r;
- }
- }
-
- /* If we have no submounts to process anymore and if
- * the root is either already done, or an autofs, we
- * are done */
- if (set_isempty(todo) &&
- (top_autofs || set_contains(done, cleaned)))
- return 0;
-
- if (!set_contains(done, cleaned) &&
- !set_contains(todo, cleaned)) {
- /* The prefix directory itself is not yet a
- * mount, make it one. */
- if (mount(cleaned, cleaned, NULL, MS_BIND|MS_REC, NULL) < 0)
- return -errno;
-
- orig_flags = 0;
- (void) get_mount_flags(cleaned, &orig_flags);
- orig_flags &= ~MS_RDONLY;
-
- if (mount(NULL, prefix, NULL, orig_flags|MS_BIND|MS_REMOUNT|(ro ? MS_RDONLY : 0), NULL) < 0)
- return -errno;
-
- x = strdup(cleaned);
- if (!x)
- return -ENOMEM;
-
- r = set_consume(done, x);
- if (r < 0)
- return r;
- }
-
- while ((x = set_steal_first(todo))) {
-
- r = set_consume(done, x);
- if (r == -EEXIST || r == 0)
- continue;
- if (r < 0)
- return r;
-
- /* Try to reuse the original flag set, but
- * don't care for errors, in case of
- * obstructed mounts */
- orig_flags = 0;
- (void) get_mount_flags(x, &orig_flags);
- orig_flags &= ~MS_RDONLY;
-
- if (mount(NULL, x, NULL, orig_flags|MS_BIND|MS_REMOUNT|(ro ? MS_RDONLY : 0), NULL) < 0) {
-
- /* Deal with mount points that are
- * obstructed by a later mount */
-
- if (errno != ENOENT)
- return -errno;
- }
-
- }
- }
-}
-
int take_password_lock(const char *root) {
struct flock flock = {
@@ -2710,24 +2479,6 @@ int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char
return 0;
}
-int mount_move_root(const char *path) {
- assert(path);
-
- if (chdir(path) < 0)
- return -errno;
-
- if (mount(path, "/", NULL, MS_MOVE, NULL) < 0)
- return -errno;
-
- if (chroot(".") < 0)
- return -errno;
-
- if (chdir("/") < 0)
- return -errno;
-
- return 0;
-}
-
int getxattr_malloc(const char *path, const char *name, char **value, bool allow_symlink) {
char *v;
size_t l;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 04:03:53 +0000