nsz Git - musl/blob - src/misc/ioctl.c

   1 #include <sys/ioctl.h>
   2 #include <stdarg.h>
   3 #include <errno.h>
   4 #include <time.h>
   5 #include <sys/time.h>
   6 #include "syscall.h"
   7
   8 int ioctl(int fd, int req, ...)
   9 {
  10         void *arg;
  11         va_list ap;
  12         va_start(ap, req);
  13         arg = va_arg(ap, void *);
  14         va_end(ap);
  15         int r = __syscall(SYS_ioctl, fd, req, arg);
  16         if (r==-ENOTTY) switch (req) {
  17         case SIOCGSTAMP:
  18         case SIOCGSTAMPNS:
  19                 if (SIOCGSTAMP==SIOCGSTAMP_OLD) break;
  20                 if (req==SIOCGSTAMP) req=SIOCGSTAMP_OLD;
  21                 if (req==SIOCGSTAMPNS) req=SIOCGSTAMPNS_OLD;
  22                 long t32[2];
  23                 r = __syscall(SYS_ioctl, fd, req, t32);
  24                 if (r<0) break;
  25                 if (req==SIOCGSTAMP_OLD) {
  26                         struct timeval *tv = arg;
  27                         tv->tv_sec = t32[0];
  28                         tv->tv_usec = t32[1];
  29                 } else {
  30                         struct timespec *ts = arg;
  31                         ts->tv_sec = t32[0];
  32                         ts->tv_nsec = t32[1];
  33                 }
  34         }
  35         return __syscall_ret(r);
  36 }