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PING(8): Honour file descriptor maximum

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This commit is contained in:
Sebastian Huber 2018-10-10 14:40:47 +02:00
parent 175c1f8e0b
commit 8ee0aa19cf
1 changed files with 11 additions and 0 deletions
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11
freebsd/sbin/ping/ping.c
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@ -75,6 +75,7 @@ __FBSDID("$FreeBSD$");
#include <getopt.h>
#include <machine/rtems-bsd-program.h>
#include <machine/rtems-bsd-commands.h>
#include <rtems/libio_.h>
#endif /* __rtems__ */
#include <sys/param.h> /* NB: we rely on this for <sys/types.h> */
#include <sys/capsicum.h>
@ -976,13 +977,23 @@ main(int argc, char *const *argv)
almost_done = 0;
while (!finish_up) {
struct timeval now, timeout;
#ifndef __rtems__
fd_set rfds;
#else /* __rtems__ */
fd_set big_enough_rfds[howmany(rtems_libio_number_iops,
sizeof(fd_set) * 8)];
#define rfds (*(fd_set *)(&big_enough_rfds[0]))
#endif /* __rtems__ */
int cc, n;
check_status();
#ifndef __rtems__
if ((unsigned)srecv >= FD_SETSIZE)
errx(EX_OSERR, "descriptor too large");
FD_ZERO(&rfds);
#else /* __rtems__ */
memset(big_enough_rfds, 0, sizeof(big_enough_rfds));
#endif /* __rtems__ */
FD_SET(srecv, &rfds);
(void)gettimeofday(&now, NULL);
timeout.tv_sec = last.tv_sec + intvl.tv_sec - now.tv_sec;