[pacman-dev] [PATCH 1/1] alpm: use flock() for db lock
andrew.gregory.8 at gmail.com
Tue Jun 6 21:56:16 UTC 2017
On 06/06/17 at 11:26pm, Christian Hesse wrote:
> From: Christian Hesse <mail at eworm.de>
> We used to check for file existens, but that suffers from stale lock
> files caused by unexpected events like crash, shutdown, etc.
> Instead use flock() to lock the file. It does not matter whether or
> not the file exists but whether an exclusive lock can be obtained.
> Also remove the hint about removing the file from pacman.
> Signed-off-by: Christian Hesse <mail at eworm.de>
> lib/libalpm/handle.c | 17 +++++++++++++++--
> src/pacman/util.c | 5 -----
> 2 files changed, 15 insertions(+), 7 deletions(-)
Refusing to run when a lock file is leftover from a previous
invocation is intentional. It serves as an indicator that the user
needs to verify the integrity of their system. Also, see
for previous discussion regarding flock().
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