diff options
Diffstat (limited to 'pk/gkr-pk-index.c')
| -rw-r--r-- | pk/gkr-pk-index.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/pk/gkr-pk-index.c b/pk/gkr-pk-index.c index bf36d568..decc0067 100644 --- a/pk/gkr-pk-index.c +++ b/pk/gkr-pk-index.c @@ -68,6 +68,39 @@ static GQuark no_location = 0; * HELPERS */ +#ifndef HAVE_FLOCK +#define LOCK_SH 1 +#define LOCK_EX 2 +#define LOCK_NB 4 +#define LOCK_UN 8 + +static int flock(int fd, int operation) +{ + struct flock flock; + + switch (operation & ~LOCK_NB) { + case LOCK_SH: + flock.l_type = F_RDLCK; + break; + case LOCK_EX: + flock.l_type = F_WRLCK; + break; + case LOCK_UN: + flock.l_type = F_UNLCK; + break; + default: + errno = EINVAL; + return -1; + } + + flock.l_whence = 0; + flock.l_start = 0; + flock.l_len = 0; + + return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock); +} +#endif //NOT_HAVE_FLOCK + static void free_mtime (gpointer v) { |