projects / glibc.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: fdce12b) | patch
Make F_RDLCK/F_WRLCK atomic
authorSamuel Thibault <samuel.thibault@ens-lyon.org>
Sat, 3 Mar 2018 10:47:56 +0000 (10:47 +0000)
committerAurelien Jarno <aurel32@debian.org>
Sat, 3 Mar 2018 10:47:56 +0000 (10:47 +0000)
commit6b721261beb185b1688fae9845d5186cc0c968c5
treeeb0bd272c863f6b8e3083be1a9e1bfbc8fcc3a57tree | snapshot
parentfdce12bbbb3ddbcfd606dc35364cf8908e111a3ccommit | 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.