Messages in this thread Patch in this message | | | From | "Aneesh Kumar K.V" <> | Subject | [PATCH -V7 03/26] vfs: Pass all mask flags down to iop->check_acl | Date | Tue, 18 Oct 2011 21:02:38 +0530 |
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From: Andreas Gruenbacher <agruen@kernel.org>
Some file permission models differentiate between writing to a file (MAY_WRITE) and appending to it (MAY_WRITE | MAY_APPEND). Pass all the mask flags down to iop->check_acl so that filesystems can distinguish between writing and appending.
All users of iop->check_acl pass the mask value back into posix_acl_permission(); strip off the additional mask flags there.
Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Andreas Gruenbacher <agruen@kernel.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> --- fs/namei.c | 2 -- fs/posix_acl.c | 2 ++ 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c index 2a4574f..276cd30 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -227,8 +227,6 @@ static int acl_permission_check(struct inode *inode, int mask) { unsigned int mode = inode->i_mode; - mask &= MAY_READ | MAY_WRITE | MAY_EXEC | MAY_NOT_BLOCK; - if (current_user_ns() != inode_userns(inode)) goto other_perms; diff --git a/fs/posix_acl.c b/fs/posix_acl.c index 10027b4..cea4623 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -218,6 +218,8 @@ posix_acl_permission(struct inode *inode, const struct posix_acl *acl, int want) const struct posix_acl_entry *pa, *pe, *mask_obj; int found = 0; + want &= MAY_READ | MAY_WRITE | MAY_EXEC | MAY_NOT_BLOCK; + FOREACH_ACL_ENTRY(pa, acl, pe) { switch(pa->e_tag) { case ACL_USER_OBJ: -- 1.7.5.4
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