summaryrefslogtreecommitdiff
path: root/src/fcntl/fcntl.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/fcntl/fcntl.c')
-rw-r--r--src/fcntl/fcntl.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/src/fcntl/fcntl.c b/src/fcntl/fcntl.c
index fa5ad32f..fb7806a3 100644
--- a/src/fcntl/fcntl.c
+++ b/src/fcntl/fcntl.c
@@ -1,6 +1,8 @@
+#define _GNU_SOURCE
#include <fcntl.h>
#include <unistd.h>
#include <stdarg.h>
+#include <errno.h>
#include "syscall.h"
#include "libc.h"
@@ -13,6 +15,12 @@ int fcntl(int fd, int cmd, ...)
va_end(ap);
if (cmd == F_SETFL) arg |= O_LARGEFILE;
if (cmd == F_SETLKW) return syscall_cp(SYS_fcntl, fd, cmd, arg);
- if (cmd == F_GETOWN) return __syscall(SYS_fcntl, fd, cmd, arg);
+ if (cmd == F_GETOWN) {
+ struct f_owner_ex ex;
+ int ret = __syscall(SYS_fcntl, fd, F_GETOWN_EX, &ex);
+ if (ret == -EINVAL) return __syscall(SYS_fcntl, fd, cmd, arg);
+ if (ret) return __syscall_ret(ret);
+ return ex.type == F_OWNER_PGRP ? -ex.pid : ex.pid;
+ }
return syscall(SYS_fcntl, fd, cmd, arg);
}