From 8e8ddeff7eee6294e24c0a9a29053164f990f1b3 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sun, 9 Oct 2011 22:51:03 -0400 Subject: [PATCH] fix F_GETOWN return value handling the fcntl syscall can return a negative value when the command is F_GETOWN, and this is not an error code but an actual value. thus we must special-case it and avoid calling __syscall_ret to set errno. this fix is better than the glibc fix (using F_GETOWN_EX) which only works on newer kernels and is more complex. --- src/fcntl/fcntl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/fcntl/fcntl.c b/src/fcntl/fcntl.c index 2c9fb6f3..cc3d6cce 100644 --- a/src/fcntl/fcntl.c +++ b/src/fcntl/fcntl.c @@ -13,6 +13,7 @@ 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); return syscall(SYS_fcntl, fd, cmd, arg); } -- 2.25.1