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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-27 12:03:57 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-27 12:03:57 +0300 |
| commit | e0e0be8a835520e2f7c89f214dfda570922a1b90 (patch) | |
| tree | 42033a89a20c26dc0f19e9119803885b1f7a06c6 /fs | |
| parent | f03b8ad8d38634d13e802165cc15917481b47835 (diff) | |
| download | linux-e0e0be8a835520e2f7c89f214dfda570922a1b90.tar.xz | |
libfs: support RENAME_NOREPLACE in simple_rename()
This is trivial to do:
- add flags argument to simple_rename()
- check if flags doesn't have any other than RENAME_NOREPLACE
- assign simple_rename() to .rename2 instead of .rename
Filesystems converted:
hugetlbfs, ramfs, bpf.
Debugfs uses simple_rename() to implement debugfs_rename(), which is for
debugfs instances to rename files internally, not for userspace filesystem
access. For this case pass zero flags to simple_rename().
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/debugfs/inode.c | 2 | ||||
| -rw-r--r-- | fs/hugetlbfs/inode.c | 2 | ||||
| -rw-r--r-- | fs/libfs.c | 6 | ||||
| -rw-r--r-- | fs/ramfs/inode.c | 2 |
4 files changed, 8 insertions, 4 deletions
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 72361baf9da7..5ac27c9de669 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -748,7 +748,7 @@ struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry, old_name = fsnotify_oldname_init(old_dentry->d_name.name); error = simple_rename(d_inode(old_dir), old_dentry, d_inode(new_dir), - dentry); + dentry, 0); if (error) { fsnotify_oldname_free(old_name); goto exit; diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 4ea71eba40a5..50cd7475a942 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -988,7 +988,7 @@ static const struct inode_operations hugetlbfs_dir_inode_operations = { .mkdir = hugetlbfs_mkdir, .rmdir = simple_rmdir, .mknod = hugetlbfs_mknod, - .rename = simple_rename, + .rename2 = simple_rename, .setattr = hugetlbfs_setattr, }; diff --git a/fs/libfs.c b/fs/libfs.c index 74dc8b9e7f53..4758353b2d41 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -349,11 +349,15 @@ int simple_rmdir(struct inode *dir, struct dentry *dentry) EXPORT_SYMBOL(simple_rmdir); int simple_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry) + struct inode *new_dir, struct dentry *new_dentry, + unsigned int flags) { struct inode *inode = d_inode(old_dentry); int they_are_dirs = d_is_dir(old_dentry); + if (flags & ~RENAME_NOREPLACE) + return -EINVAL; + if (!simple_empty(new_dentry)) return -ENOTEMPTY; diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index 1ab6e6c2e60e..c2aa068ff974 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -146,7 +146,7 @@ static const struct inode_operations ramfs_dir_inode_operations = { .mkdir = ramfs_mkdir, .rmdir = simple_rmdir, .mknod = ramfs_mknod, - .rename = simple_rename, + .rename2 = simple_rename, }; static const struct super_operations ramfs_ops = { |