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| author | David Howells <dhowells@redhat.com> | 2019-03-25 16:38:26 +0000 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2019-05-25 18:06:17 -0400 |
| commit | db2c246a091efe2e49aeb3fe0cf6ed2affbddf37 (patch) | |
| tree | 3ed93e5cc3d1c05e215bb7cc23656f3be2494327 /fs | |
| parent | 8d9e46d80777b484f8f0945c317ad618224d7811 (diff) | |
| download | linux-stable-db2c246a091efe2e49aeb3fe0cf6ed2affbddf37.tar.gz linux-stable-db2c246a091efe2e49aeb3fe0cf6ed2affbddf37.tar.bz2 linux-stable-db2c246a091efe2e49aeb3fe0cf6ed2affbddf37.zip | |
vfs: Use sget_fc() for pseudo-filesystems
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/libfs.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/fs/libfs.c b/fs/libfs.c index 7df3c9a85f6b..7e6811ba4edd 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -237,17 +237,11 @@ static const struct super_operations simple_super_operations = { .statfs = simple_statfs, }; -static int pseudo_fs_get_tree(struct fs_context *fc) +static int pseudo_fs_fill_super(struct super_block *s, struct fs_context *fc) { struct pseudo_fs_context *ctx = fc->fs_private; - struct super_block *s; struct inode *root; - s = sget_userns(fc->fs_type, NULL, set_anon_super, SB_KERNMOUNT|SB_NOUSER, - &init_user_ns, NULL); - if (IS_ERR(s)) - return PTR_ERR(s); - s->s_maxbytes = MAX_LFS_FILESIZE; s->s_blocksize = PAGE_SIZE; s->s_blocksize_bits = PAGE_SHIFT; @@ -257,7 +251,8 @@ static int pseudo_fs_get_tree(struct fs_context *fc) s->s_time_gran = 1; root = new_inode(s); if (!root) - goto Enomem; + return -ENOMEM; + /* * since this is the first inode, make it number 1. New inodes created * after this must take care not to collide with it (by passing @@ -268,15 +263,14 @@ static int pseudo_fs_get_tree(struct fs_context *fc) root->i_atime = root->i_mtime = root->i_ctime = current_time(root); s->s_root = d_make_root(root); if (!s->s_root) - goto Enomem; + return -ENOMEM; s->s_d_op = ctx->dops; - s->s_flags |= SB_ACTIVE; - fc->root = dget(s->s_root); return 0; +} -Enomem: - deactivate_locked_super(s); - return -ENOMEM; +static int pseudo_fs_get_tree(struct fs_context *fc) +{ + return vfs_get_super(fc, vfs_get_independent_super, pseudo_fs_fill_super); } static void pseudo_fs_free(struct fs_context *fc) @@ -303,6 +297,8 @@ struct pseudo_fs_context *init_pseudo(struct fs_context *fc, ctx->magic = magic; fc->fs_private = ctx; fc->ops = &pseudo_fs_context_ops; + fc->sb_flags |= SB_NOUSER; + fc->global = true; } return ctx; } |