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libalpm: add PID to db.lck

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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>
This commit is contained in:
Allan McRae 2008-11-02 13:47:04 +10:00 committed by Dan McGee
parent e49adbea4c
commit b55f478042
1 changed files with 13 additions and 2 deletions
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15
lib/libalpm/util.c
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@ -242,7 +242,8 @@ char *_alpm_strreplace(const char *str, const char *needle, const char *replace)
int _alpm_lckmk() int _alpm_lckmk()
{ {
int fd; int fd;
char *dir, *ptr; pid_t pid;
char *dir, *ptr, *spid = NULL;
const char *file = alpm_option_get_lockfile(); const char *file = alpm_option_get_lockfile();
/* create the dir of the lockfile first */ /* 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 while((fd = open(file, O_WRONLY | O_CREAT | O_EXCL, 0000)) == -1
&& errno == EINTR); && 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 */ /* Remove a lock file */