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Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 0dc4cbf21f37..22eb5484774c 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2656,6 +2656,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
int acc_mode;
int create_error = 0;
struct dentry *const DENTRY_NOT_SET = (void *) -1UL;
+ bool excl;
BUG_ON(dentry->d_inode);
@@ -2669,10 +2670,9 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
if ((open_flag & O_CREAT) && !IS_POSIXACL(dir))
mode &= ~current_umask();
- if ((open_flag & (O_EXCL | O_CREAT)) == (O_EXCL | O_CREAT)) {
+ excl = (open_flag & (O_EXCL | O_CREAT)) == (O_EXCL | O_CREAT);
+ if (excl)
open_flag &= ~O_TRUNC;
- *opened |= FILE_CREATED;
- }
/*
* Checking write permission is tricky, bacuse we don't know if we are
@@ -2726,7 +2726,11 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
}
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;
}
@@ -2740,6 +2744,7 @@ 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;