test/socket/checkfd/checkfd.c

   1 #include <err.h>
   2 #include <errno.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6
   7 int
   8 main(int argc, char *argv[])
   9 {
  10         int i;
  11
  12         if (argc < 2)
  13                 exit(1);
  14
  15         for (i = 1; i < argc; ++i) {
  16                 char *endptr;
  17                 int fd;
  18
  19                 fd = strtol(argv[i], &endptr, 10);
  20                 if (*endptr != '\0')
  21                         exit(1);
  22
  23                 if (close(fd) < 0) {
  24                         int error = errno;
  25
  26                         if (error != EBADF) {
  27                                 warnx("close error %d", error);
  28                                 exit(2);
  29                         }
  30                 } else {
  31                         warnx("%d is still valid", fd);
  32                         exit(2);
  33                 }
  34         }
  35         exit(0);
  36 }