vfs: make O_PATH file descriptors usable for 'fchdir()'
We already use them for openat() and friends, but fchdir() also wants to
be able to use O_PATH file descriptors. This should make it comparable
to the O_SEARCH of Solaris. In particular, O_PATH allows you to access
(not-quite-open) a directory you don't have read persmission to, only
Noticed during development of multithread support for ksh93.
Reported-by: ольга крыжановская <email@example.com>
Cc: Al Viro <firstname.lastname@example.org>
Cc: email@example.com # O_PATH introduced in 3.0+
Signed-off-by: Linus Torvalds <firstname.lastname@example.org>
1 file changed