From 7765706c0584ed4a30e0b7a3ada742e490ef02b0 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Fri, 6 Jun 2014 15:42:42 -0400 Subject: add O_CLOEXEC fallback for open and related functions since there is no easy way to detect whether open honored or ignored the O_CLOEXEC flag, the optimal solution to providing a fallback is simply to make the fcntl syscall to set the close-on-exec flag immediately after open returns. --- src/fcntl/open.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'src/fcntl') diff --git a/src/fcntl/open.c b/src/fcntl/open.c index 0594ed7e..088a28f7 100644 --- a/src/fcntl/open.c +++ b/src/fcntl/open.c @@ -10,7 +10,12 @@ int open(const char *filename, int flags, ...) va_start(ap, flags); mode = va_arg(ap, mode_t); va_end(ap); - return sys_open_cp(filename, flags, mode); + + int fd = __sys_open_cp(filename, flags, mode); + if (fd>=0 && (flags & O_CLOEXEC)) + __syscall(SYS_fcntl, fd, F_SETFD, FD_CLOEXEC); + + return __syscall_ret(fd); } LFS64(open); -- cgit v1.2.1