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authorAl Viro <viro@zeniv.linux.org.uk>2018-06-08 13:22:02 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2018-07-12 10:04:18 -0400
commit73a09dd94377e4b186b300bd5461920710c7c3d5 (patch)
treebb66705e5b7215057e416b4f6cb9670561b6b395 /fs/namei.c
parentaad888f828fec1e7160b67f122172e7ab7f82e03 (diff)
downloadlinux-stericsson-73a09dd94377e4b186b300bd5461920710c7c3d5.tar.gz
introduce FMODE_CREATED and switch to it
Parallel to FILE_CREATED, goes into ->f_mode instead of *opened. NFS is a bit of a wart here - it doesn't have file at the point where FILE_CREATED used to be set, so we need to propagate it there (for now). IMA is another one (here and everywhere)... Note that this needs do_dentry_open() to leave old bits in ->f_mode alone - we want it to preserve FMODE_CREATED if it had been already set (no other bit can be there). Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 8a1ae074c1c1..4bd7cc0d7522 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3061,7 +3061,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
* permission here.
*/
int acc_mode = op->acc_mode;
- if (*opened & FILE_CREATED) {
+ if (file->f_mode & FMODE_CREATED) {
WARN_ON(!(open_flag & O_CREAT));
fsnotify_create(dir, dentry);
acc_mode = 0;
@@ -3077,7 +3077,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
dput(dentry);
dentry = file->f_path.dentry;
}
- if (*opened & FILE_CREATED)
+ if (file->f_mode & FMODE_CREATED)
fsnotify_create(dir, dentry);
if (unlikely(d_is_negative(dentry))) {
error = -ENOENT;
@@ -3126,7 +3126,7 @@ static int lookup_open(struct nameidata *nd, struct path *path,
if (unlikely(IS_DEADDIR(dir_inode)))
return -ENOENT;
- *opened &= ~FILE_CREATED;
+ file->f_mode &= ~FMODE_CREATED;
dentry = d_lookup(dir, &nd->last);
for (;;) {
if (!dentry) {
@@ -3211,7 +3211,7 @@ no_open:
/* Negative dentry, just create the file */
if (!dentry->d_inode && (open_flag & O_CREAT)) {
- *opened |= FILE_CREATED;
+ file->f_mode |= FMODE_CREATED;
audit_inode_child(dir_inode, dentry, AUDIT_TYPE_CHILD_CREATE);
if (!dir_inode->i_op->create) {
error = -EACCES;
@@ -3318,7 +3318,7 @@ static int do_last(struct nameidata *nd,
if (error)
goto out;
- if ((*opened & FILE_CREATED) ||
+ if ((file->f_mode & FMODE_CREATED) ||
!S_ISREG(file_inode(file)->i_mode))
will_truncate = false;
@@ -3326,7 +3326,7 @@ static int do_last(struct nameidata *nd,
goto opened;
}
- if (*opened & FILE_CREATED) {
+ if (file->f_mode & FMODE_CREATED) {
/* Don't check for write permission, don't truncate */
open_flag &= ~O_TRUNC;
will_truncate = false;
@@ -3400,7 +3400,8 @@ finish_open_created:
if (error)
goto out;
opened:
- error = ima_file_check(file, op->acc_mode, *opened);
+ error = ima_file_check(file, op->acc_mode,
+ file->f_mode & FMODE_CREATED ? FILE_CREATED : 0);
if (!error && will_truncate)
error = handle_truncate(file);
out: