Commit 1bd5191d authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Al Viro

[patch 05/14] hpfs: dont call permission()

hpfs_unlink() calls permission() prior to truncating the file.  HPFS
doesn't define a .permission method, so replace with explicit call to
generic_permission().

This is equivalent, except that devcgroup_inode_permission() and
security_inode_permission() are not called.

The truncation is just an implementation detail of the unlink, so
these security checks are unnecessary.

I suspect that even calling generic_permission() is unnecessary, since
we shouldn't mind if the file isn't writable.  But I leave that to the
maintainer to decide.
Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
CC: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
parent 9043476f
...@@ -415,7 +415,7 @@ static int hpfs_unlink(struct inode *dir, struct dentry *dentry) ...@@ -415,7 +415,7 @@ static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
d_drop(dentry); d_drop(dentry);
spin_lock(&dentry->d_lock); spin_lock(&dentry->d_lock);
if (atomic_read(&dentry->d_count) > 1 || if (atomic_read(&dentry->d_count) > 1 ||
permission(inode, MAY_WRITE, NULL) || generic_permission(inode, MAY_WRITE, NULL) ||
!S_ISREG(inode->i_mode) || !S_ISREG(inode->i_mode) ||
get_write_access(inode)) { get_write_access(inode)) {
spin_unlock(&dentry->d_lock); spin_unlock(&dentry->d_lock);
......
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