summaryrefslogtreecommitdiffstats
path: root/fs/super.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/super.c')
-rw-r--r--fs/super.c39
1 files changed, 32 insertions, 7 deletions
diff --git a/fs/super.c b/fs/super.c
index a6ceed7bcd89..f627b7c53d2b 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -32,6 +32,7 @@
#include <linux/backing-dev.h>
#include <linux/rculist_bl.h>
#include <linux/cleancache.h>
+#include <linux/fscrypt.h>
#include <linux/fsnotify.h>
#include <linux/lockdep.h>
#include <linux/user_namespace.h>
@@ -257,6 +258,8 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags,
s->s_maxbytes = MAX_NON_LFS;
s->s_op = &default_op;
s->s_time_gran = 1000000000;
+ s->s_time_min = TIME64_MIN;
+ s->s_time_max = TIME64_MAX;
s->cleancache_poolid = CLEANCACHE_NO_POOL;
s->s_shrink.seeks = DEFAULT_SEEKS;
@@ -290,6 +293,7 @@ static void __put_super(struct super_block *s)
WARN_ON(s->s_inode_lru.node);
WARN_ON(!list_empty(&s->s_mounts));
security_sb_free(s);
+ fscrypt_sb_free(s);
put_user_ns(s->s_user_ns);
kfree(s->s_subtype);
call_rcu(&s->rcu, destroy_super_rcu);
@@ -1160,9 +1164,11 @@ int vfs_get_super(struct fs_context *fc,
{
int (*test)(struct super_block *, struct fs_context *);
struct super_block *sb;
+ int err;
switch (keying) {
case vfs_get_single_super:
+ case vfs_get_single_reconf_super:
test = test_single_super;
break;
case vfs_get_keyed_super:
@@ -1180,18 +1186,29 @@ int vfs_get_super(struct fs_context *fc,
return PTR_ERR(sb);
if (!sb->s_root) {
- int err = fill_super(sb, fc);
- if (err) {
- deactivate_locked_super(sb);
- return err;
- }
+ err = fill_super(sb, fc);
+ if (err)
+ goto error;
sb->s_flags |= SB_ACTIVE;
+ fc->root = dget(sb->s_root);
+ } else {
+ fc->root = dget(sb->s_root);
+ if (keying == vfs_get_single_reconf_super) {
+ err = reconfigure_super(fc);
+ if (err < 0) {
+ dput(fc->root);
+ fc->root = NULL;
+ goto error;
+ }
+ }
}
- BUG_ON(fc->root);
- fc->root = dget(sb->s_root);
return 0;
+
+error:
+ deactivate_locked_super(sb);
+ return err;
}
EXPORT_SYMBOL(vfs_get_super);
@@ -1211,6 +1228,14 @@ int get_tree_single(struct fs_context *fc,
}
EXPORT_SYMBOL(get_tree_single);
+int get_tree_single_reconf(struct fs_context *fc,
+ int (*fill_super)(struct super_block *sb,
+ struct fs_context *fc))
+{
+ return vfs_get_super(fc, vfs_get_single_reconf_super, fill_super);
+}
+EXPORT_SYMBOL(get_tree_single_reconf);
+
int get_tree_keyed(struct fs_context *fc,
int (*fill_super)(struct super_block *sb,
struct fs_context *fc),