diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-13 16:42:14 -0400 |
---|---|---|
committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-15 02:21:45 -0400 |
commit | bcda76524cd1fa32af748536f27f674a13e56700 (patch) | |
tree | 37dbc7fb50b515f3dff820e14d92e768fb1cda31 /fs/nfsctl.c | |
parent | 1abf0c718f15a56a0a435588d1b104c7a37dc9bd (diff) |
Allow O_PATH for symlinks
At that point we can't do almost nothing with them. They can be opened
with O_PATH, we can manipulate such descriptors with dup(), etc. and
we can see them in /proc/*/{fd,fdinfo}/*.
We can't (and won't be able to) follow /proc/*/fd/* symlinks for those;
there's simply not enough information for pathname resolution to go on
from such point - to resolve a symlink we need to know which directory
does it live in.
We will be able to do useful things with them after the next commit, though -
readlinkat() and fchownat() will be possible to use with dfd being an
O_PATH-opened symlink and empty relative pathname. Combined with
open_by_handle() it'll give us a way to do realink-by-handle and
lchown-by-handle without messing with more redundant syscalls.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfsctl.c')
0 files changed, 0 insertions, 0 deletions