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authorAllan McRae <allan@archlinux.org>2008-11-02 13:47:04 +1000
committerDan McGee <dan@archlinux.org>2009-01-03 00:00:19 -0600
commitb55f478042053dfb749da7ce0a48fc0e49112093 (patch)
tree984eb7e783645b9414ce5d5acda7657ab7f45581
parente49adbea4c67b2fd49910697229682e0a85fe9b2 (diff)
libalpm: add PID to db.lck
This is the first step in being able to automatically remove phantom lock files. Signed-off-by: Allan McRae <allan@archlinux.org> [Dan: fix compilation warnings] Signed-off-by: Dan McGee <dan@archlinux.org>
-rw-r--r--lib/libalpm/util.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c
index da3463b0..4d682552 100644
--- a/lib/libalpm/util.c
+++ b/lib/libalpm/util.c
@@ -242,7 +242,8 @@ char *_alpm_strreplace(const char *str, const char *needle, const char *replace)
int _alpm_lckmk()
{
int fd;
- char *dir, *ptr;
+ pid_t pid;
+ char *dir, *ptr, *spid = NULL;
const char *file = alpm_option_get_lockfile();
/* create the dir of the lockfile first */
@@ -256,7 +257,17 @@ int _alpm_lckmk()
while((fd = open(file, O_WRONLY | O_CREAT | O_EXCL, 0000)) == -1
&& errno == EINTR);
- return(fd > 0 ? fd : -1);
+ if(fd > 0) {
+ pid = getpid();
+ size_t len = snprintf(spid, 0, "%ld\n", (long)pid) + 1;
+ spid = malloc(len);
+ snprintf(spid, len, "%ld\n", (long)pid);
+ while(write(fd, (void *)spid, len) == -1 && errno == EINTR);
+ fsync(fd);
+ free(spid);
+ return(fd);
+ }
+ return(-1);
}
/* Remove a lock file */