X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Ffcntl%2Ffcntl.c;h=390ef758acfaaf9ea01db00efffc607f7888b8d3;hb=ae0c1de530bc3b27069008b8b247171d08dbe80b;hp=fa5ad32ff7ecf05e337c72ce72e5160525106d47;hpb=a541297617e567eadc7448e1af35d7bb20461a8c;p=musl

diff --git a/src/fcntl/fcntl.c b/src/fcntl/fcntl.c
index fa5ad32f..390ef758 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 +15,28 @@ 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;
+	}
+	if (cmd == F_DUPFD_CLOEXEC) {
+		int ret = __syscall(SYS_fcntl, fd, F_DUPFD_CLOEXEC, arg);
+		if (ret != -EINVAL) {
+			if (ret >= 0)
+				__syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC);
+			return __syscall_ret(ret);
+		}
+		ret = __syscall(SYS_fcntl, fd, F_DUPFD_CLOEXEC, 0);
+		if (ret != -EINVAL) {
+			if (ret >= 0) __syscall(SYS_close, ret);
+			return __syscall_ret(-EINVAL);
+		}
+		ret = __syscall(SYS_fcntl, fd, F_DUPFD, arg);
+		if (ret >= 0) __syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC);
+		return __syscall_ret(ret);
+	}
 	return syscall(SYS_fcntl, fd, cmd, arg);
 }