user/sven/linux.git/include/linux/posix_acl.h, branch v3.8

userns: Convert vfs posix_acl support to use kuids and kgids

2012-09-18T08:01:35Z

- In setxattr if we are setting a posix acl convert uids and gids from the current user namespace into the initial user namespace, before the xattrs are passed to the underlying filesystem. Untranslatable uids and gids are represented as -1 which posix_acl_from_xattr will represent as INVALID_UID or INVALID_GID. posix_acl_valid will fail if an acl from userspace has any INVALID_UID or INVALID_GID values. In net this guarantees that untranslatable posix acls will not be stored by filesystems. - In getxattr if we are reading a posix acl convert uids and gids from the initial user namespace into the current user namespace. Uids and gids that can not be tranlsated into the current user namespace will be represented as -1. - Replace e_id in struct posix_acl_entry with an anymouns union of e_uid and e_gid. For the short term retain the e_id field until all of the users are converted. - Don't set struct posix_acl.e_id in the cases where the acl type does not use e_id. Greatly reducing the use of ACL_UNDEFINED_ID. - Rework the ordering checks in posix_acl_valid so that I use kuid_t and kgid_t types throughout the code, and so that I don't need arithmetic on uid and gid types. Cc: Theodore Tso Cc: Andrew Morton Cc: Andreas Dilger Cc: Jan Kara Cc: Al Viro Signed-off-by: Eric W. Biederman

BUG: headers with BUG/BUG_ON etc. need linux/bug.h

2012-03-04T22:54:34Z

If a header file is making use of BUG, BUG_ON, BUILD_BUG_ON, or any other BUG variant in a static inline (i.e. not in a #define) then that header really should be including and not just expecting it to be implicitly present. We can make this change risk-free, since if the files using these headers didn't have exposure to linux/bug.h already, they would have been causing compile failures/warnings. Signed-off-by: Paul Gortmaker

RCUify freeing acls, let check_acl() go ahead in RCU mode if acl is cached

2011-08-03T04:58:42Z

Signed-off-by: Al Viro

get rid of boilerplate switches in posix_acl.h

2011-08-03T04:47:21Z

the only potentially subtle thing here: get_cached_acl() is never called with the second argument other than ACL_TYPE_{ACCESS,DEFAULT}. IOW, that return ERR_PTR(-EINVAL) in there might as well be BUG(). Signed-off-by: Al Viro

switch posix_acl_chmod() to umode_t

2011-08-01T06:10:32Z

again, that's what all callers pass to it Signed-off-by: Al Viro

switch posix_acl_from_mode() to umode_t

2011-08-01T06:10:20Z

... seeing that this is what all callers pass to it anyway. Signed-off-by: Al Viro

switch posix_acl_equiv_mode() to umode_t *

2011-08-01T06:10:06Z

... so that &inode->i_mode could be passed to it Signed-off-by: Al Viro

switch posix_acl_create() to umode_t *

2011-08-01T06:09:42Z

so we can pass &inode->i_mode to it Signed-off-by: Al Viro

bury posix_acl_..._masq() variants

2011-07-25T18:27:32Z

made static; no callers left outside of posix_acl.c. posix_acl_clone() also has lost all external callers and became static... Signed-off-by: Al Viro

kill boilerplates around posix_acl_create_masq()

2011-07-25T18:27:32Z

new helper: posix_acl_create(&acl, gfp, mode_p). Replaces acl with modified clone, on failure releases acl and replaces with NULL. Returns 0 or -ve on error. All callers of posix_acl_create_masq() switched. Signed-off-by: Al Viro