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[Qemu-devel] [PATCH] keep the PID file locked for the lifetime of the pr
From: |
Laszlo Ersek |
Subject: |
[Qemu-devel] [PATCH] keep the PID file locked for the lifetime of the process |
Date: |
Thu, 26 Jan 2012 22:36:41 +0100 |
The lockf() call in qemu_create_pidfile() aims at ensuring mutual
exclusion. We shouldn't close the pidfile on success, because that drops
the lock as well [1]:
"File locks shall be released on first close by the locking process
of any file descriptor for the file."
Coverity may complain again about the leaked file descriptor; let's
worry about that later.
[1] http://pubs.opengroup.org/onlinepubs/9699919799/functions/lockf.html
Signed-off-by: Laszlo Ersek <address@hidden>
---
Please keep me CC'd, I'm not subscribed. Thanks!
os-posix.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/os-posix.c b/os-posix.c
index 5c437ca..f4940c8 100644
--- a/os-posix.c
+++ b/os-posix.c
@@ -348,6 +348,5 @@ int qemu_create_pidfile(const char *filename)
return -1;
}
- close(fd);
return 0;
}
--
1.7.1
- [Qemu-devel] [PATCH] keep the PID file locked for the lifetime of the process,
Laszlo Ersek <=