Mercurial > public > mercurial-scm > hg-stable
diff contrib/chg/util.c @ 28855:f5764e177bbe
chg: extract the logic of setting FD_CLOEXEC to a utility function
Setting FD_CLOEXEC is useful for other fds such like lockfd and sockdirfd,
move the logic from hgc_open to util.
| author | Jun Wu <quark@fb.com> |
|---|---|
| date | Mon, 11 Apr 2016 00:17:17 +0100 |
| parents | ddef14468952 |
| children | b94db1780365 |
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--- a/contrib/chg/util.c Sun Apr 10 03:14:32 2016 +0100 +++ b/contrib/chg/util.c Mon Apr 11 00:17:17 2016 +0100 @@ -8,6 +8,7 @@ */ #include <errno.h> +#include <fcntl.h> #include <signal.h> #include <stdarg.h> #include <stdio.h> @@ -91,6 +92,15 @@ abortmsgerrno("failed to fchdir"); } +void fsetcloexec(int fd) +{ + int flags = fcntl(fd, F_GETFD); + if (flags < 0) + abortmsgerrno("cannot get flags of fd %d", fd); + if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) + abortmsgerrno("cannot set flags of fd %d", fd); +} + void *mallocx(size_t size) { void *result = malloc(size);