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| author | Al Viro <viro@zeniv.linux.org.uk> | 2013-09-16 19:22:33 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-09-17 17:08:50 -0400 |
| commit | 03da633aa7b08bdc4d86e9c2780bb89277b65cd6 (patch) | |
| tree | f663ce0d2f49867c6b4f9b0631976a9e7ea9556a | |
| parent | 116cc0225381415b96551f725455d067f63a76a0 (diff) | |
| download | linux-03da633aa7b08bdc4d86e9c2780bb89277b65cd6.tar.gz | |
atomic_open: take care of EEXIST in no-open case with O_CREAT|O_EXCL in fs/namei.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/9p/vfs_inode_dotl.c | 8 | ||||
| -rw-r--r-- | fs/namei.c | 33 |
2 files changed, 20 insertions, 21 deletions
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 53687bbf2296..a7c481402c46 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -267,14 +267,8 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, } /* Only creates */ - if (!(flags & O_CREAT)) + if (!(flags & O_CREAT) || dentry->d_inode) return finish_no_open(file, res); - else if (dentry->d_inode) { - if ((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) - return -EEXIST; - else - return finish_no_open(file, res); - } v9ses = v9fs_inode2v9ses(dir); diff --git a/fs/namei.c b/fs/namei.c index 22eb5484774c..645268f23eb6 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2725,16 +2725,6 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry, goto out; } - acc_mode = op->acc_mode; - if (WARN_ON(excl && !(*opened & FILE_CREATED))) - *opened |= FILE_CREATED; - - if (*opened & FILE_CREATED) { - WARN_ON(!(open_flag & O_CREAT)); - fsnotify_create(dir, dentry); - acc_mode = MAY_OPEN; - } - if (error) { /* returned 1, that is */ if (WARN_ON(file->f_path.dentry == DENTRY_NOT_SET)) { error = -EIO; @@ -2744,10 +2734,19 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry, dput(dentry); dentry = file->f_path.dentry; } - WARN_ON(!dentry->d_inode && (*opened & FILE_CREATED)); - if (create_error && dentry->d_inode == NULL) { - error = create_error; - goto out; + if (*opened & FILE_CREATED) + fsnotify_create(dir, dentry); + if (!dentry->d_inode) { + WARN_ON(*opened & FILE_CREATED); + if (create_error) { + error = create_error; + goto out; + } + } else { + if (excl && !(*opened & FILE_CREATED)) { + error = -EEXIST; + goto out; + } } goto looked_up; } @@ -2756,6 +2755,12 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry, * We didn't have the inode before the open, so check open permission * here. */ + acc_mode = op->acc_mode; + if (*opened & FILE_CREATED) { + WARN_ON(!(open_flag & O_CREAT)); + fsnotify_create(dir, dentry); + acc_mode = MAY_OPEN; + } error = may_open(&file->f_path, acc_mode, open_flag); if (error) fput(file); |