Luca Berra: mdmon: check select a writable pid_dir
Martin F. Krafft
madduck at alioth.debian.org
Mon May 24 09:21:08 UTC 2010
Module: mdadm
Branch: upstream
Commit: ed8fa52f31521b8314859f290c464f77359933a0
URL: http://git.debian.org/?p=pkg-mdadm/mdadm.git;a=commit;h=ed8fa52f31521b8314859f290c464f77359933a0
Author: Luca Berra <bluca at comedia.it>
Date: Sun Feb 28 15:42:57 2010 +0100
mdmon: check select a writable pid_dir
Check that either VAR_DIR or ALT_DIR is actually writable before
selecting it.
Signed-off-by: Luca Berra <bluca at comedia.it>
Signed-off-by: NeilBrown <neilb at suse.de>
---
mdmon.c | 25 ++++++++++++-------------
1 files changed, 12 insertions(+), 13 deletions(-)
diff --git a/mdmon.c b/mdmon.c
index a3da795..ef1872a 100644
--- a/mdmon.c
+++ b/mdmon.c
@@ -120,6 +120,9 @@ static int make_pidfile(char *devname)
int fd;
int n;
+ if (mkdir(pid_dir, 0600) < 0 &&
+ errno != EEXIST)
+ return -errno;
sprintf(path, "%s/%s.pid", pid_dir, devname);
fd = open(path, O_RDWR|O_CREAT|O_EXCL, 0600);
@@ -474,20 +477,16 @@ static int mdmon(char *devname, int devnum, int must_fork, int takeover)
*/
if (victim > 0)
remove_pidfile(devname);
- if (mkdir(VAR_RUN, 0600) >= 0 || errno == EEXIST)
- pid_dir = VAR_RUN;
- else if (mkdir(ALT_RUN, 0600) >= 0 || errno == EEXIST)
- pid_dir = ALT_RUN;
- else {
- fprintf(stderr, "mdmon: Neither %s nor %s are writable\n"
- " cannot create .pid or .sock files. Aborting\n",
- VAR_RUN, ALT_RUN);
- exit(3);
- }
+ pid_dir = VAR_RUN;
if (make_pidfile(devname) < 0) {
- fprintf(stderr, "mdmon: Cannot create pid file in %s - aborting.\n",
- pid_dir);
- exit(3);
+ /* Try the alternate */
+ pid_dir = ALT_RUN;
+ if (make_pidfile(devname) < 0) {
+ fprintf(stderr, "mdmon: Neither %s nor %s are writable\n"
+ " cannot create .pid or .sock files. Aborting\n",
+ VAR_RUN, ALT_RUN);
+ exit(3);
+ }
}
container->sock = make_control_sock(devname);
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