projects / glibc.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 5d5bb07) | patch
Make F_RDLCK/F_WRLCK atomic
authorSamuel Thibault <samuel.thibault@ens-lyon.org>
Mon, 16 Jan 2017 17:43:37 +0000 (17:43 +0000)
committerAurelien Jarno <aurel32@debian.org>
Mon, 16 Jan 2017 17:43:37 +0000 (17:43 +0000)
commit28a6f4d0f8c4476518cfaa74ce13ff39a58be832
tree3f7fb501874afb97a5c8d7212ad1a45f836238fatree | snapshot
parent5d5bb0785a3c3aa6b2916b8668bef0ea701792fccommit | diff
Make F_RDLCK/F_WRLCK atomic

lockf(LOCK_EX) would for instance drop any existing shared lock before taking
the exclusive lock. F_RDLCK/F_WRLCK need atomic changes, so introduce and use
__LOCK_ATOM

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
* misc/sys/file.h (__LOCK_ATOMIC): New macro.
* sysdeps/mach/hurd/fcntl.c (__libc_fcntl): Use __LOCK_ATOMIC along LOCK_SH and
LOCK_EX.

Gbp-Pq: Topic hurd-i386
Gbp-Pq: Name tg-WRLCK-upgrade.diff
misc/sys/file.h diff | blob | history
sysdeps/mach/hurd/fcntl.c diff | blob | history
Unnamed repository; edit this file 'description' to name the repository.