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util.pposix: Use freopen(3) when replacing standard IO streams (thanks ratchetfreak)

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Man page says this is what freopen(3) is for.
This commit is contained in:
Kim Alvefur 2018-07-12 20:42:22 +02:00
parent 0e28ada219
commit 39c7ba2a8f
1 changed files with 3 additions and 7 deletions

10
util-src/pposix.c
View file

@ -104,14 +104,10 @@ static int lc_daemonize(lua_State *L) {
return 2;
}
/* Close stdin, stdout, stderr */
close(0);
close(1);
close(2);
/* Make sure accidental use of FDs 0, 1, 2 don't cause weirdness */
open("/dev/null", O_RDONLY);
open("/dev/null", O_WRONLY);
open("/dev/null", O_WRONLY);
stdin = freopen("/dev/null", "r", stdin);
stdout = freopen("/dev/null", "w", stdout);
stderr = freopen("/dev/null", "w", stderr);
/* Final fork, use it wisely */
if(fork()) {