mirror of
https://github.com/pi-hole/FTL.git
synced 2024-10-26 16:52:18 +02:00
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* Pi-hole: A black hole for Internet advertisements
|
|
* (c) 2020 Pi-hole, LLC (https://pi-hole.net)
|
|
* Network-wide ad blocking via your own hardware.
|
|
*
|
|
* FTL Engine
|
|
* Pi-hole syscall implementation for select
|
|
*
|
|
* This file is copyright under the latest version of the EUPL.
|
|
* Please see LICENSE file for your rights under this license. */
|
|
|
|
#include "../FTL.h"
|
|
//#include "syscalls.h" is implicitly done in FTL.h
|
|
#include "../log.h"
|
|
|
|
#include <sys/select.h>
|
|
|
|
#undef select
|
|
int FTLselect(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout, const char *file, const char *func, const int line)
|
|
{
|
|
int ret = 0;
|
|
do
|
|
{
|
|
// Reset errno before trying to write
|
|
errno = 0;
|
|
ret = select(nfds, readfds, writefds, exceptfds, timeout);
|
|
}
|
|
// Try again if the last accept() call failed due to an interruption by an
|
|
// incoming signal
|
|
while(ret < 0 && errno == EINTR);
|
|
|
|
// Backup errno value
|
|
const int _errno = errno;
|
|
|
|
// Final error checking (may have failed for some other reason then an
|
|
// EINTR = interrupted system call)
|
|
if(ret < 0)
|
|
logg("WARN: Could not select() in %s() (%s:%i): %s",
|
|
func, file, line, strerror(errno));
|
|
|
|
// Restore errno value
|
|
errno = _errno;
|
|
|
|
return ret;
|
|
} |