diff options
Diffstat (limited to 'src/w32.c')
| -rw-r--r-- | src/w32.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/w32.c b/src/w32.c index 230479cd61a..46aebe8b634 100644 --- a/src/w32.c +++ b/src/w32.c @@ -6719,10 +6719,16 @@ sys_sendto (int s, const char * buf, int len, int flags, } /* Windows does not have an fcntl function. Provide an implementation - solely for making sockets non-blocking. */ + good enough for Emacs. */ int fcntl (int s, int cmd, int options) { + /* In the w32 Emacs port, fcntl (fd, F_DUPFD_CLOEXEC, fd1) is always + invoked in a context where fd1 is closed and all descriptors less + than fd1 are open, so sys_dup is an adequate implementation. */ + if (cmd == F_DUPFD_CLOEXEC) + return sys_dup (s); + if (winsock_lib == NULL) { errno = ENETDOWN; @@ -6864,13 +6870,14 @@ sys_dup2 (int src, int dst) return rc; } -/* Unix pipe() has only one arg */ int -sys_pipe (int * phandles) +pipe2 (int * phandles, int pipe2_flags) { int rc; unsigned flags; + eassert (pipe2_flags == O_CLOEXEC); + /* make pipe handles non-inheritable; when we spawn a child, we replace the relevant handle with an inheritable one. Also put pipes into binary mode; we will do text mode translation ourselves |