diff options
| -rw-r--r-- | src/lib9/create.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/lib9/create.c b/src/lib9/create.c index af621099..c8f6605a 100644 --- a/src/lib9/create.c +++ b/src/lib9/create.c @@ -2,6 +2,8 @@ #include <u.h> #define NOPLAN9DEFINES #include <sys/file.h> +#include <unistd.h> +#include <fcntl.h> #include <libc.h> #include <sys/stat.h> #ifndef O_DIRECT @@ -12,6 +14,7 @@ int p9create(char *path, int mode, ulong perm) { int fd, cexec, umode, rclose, lock, rdwr; + struct flock fl; rdwr = mode&3; lock = mode&OLOCK; @@ -49,7 +52,11 @@ p9create(char *path, int mode, ulong perm) out: if(fd >= 0){ if(lock){ - if(flock(fd, (rdwr==OREAD) ? LOCK_SH : LOCK_EX) < 0){ + fl.l_type = (rdwr==OREAD) ? F_RDLCK : F_WRLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 0; + if(fcntl(fd, F_SETLK, &fl) < 0){ close(fd); return -1; } |