ok, well with 3.4.27 on Solaris 2.6, the following program works for me:
#include <sys/stropts.h>
#include <sys/ioctl.h>
#include <sys/sockio.h>
#include <fcntl.h>
main(argc, argv)
int argc;
char *argv[];
{
struct strioctl stl;
int fd, ret, numifs;
if ( (fd = open("/dev/ip",O_RDWR)) == -1 ) {
perror("open(/dev/ip)");
exit(1);
}
stl.ic_cmd = SIOCGIFNUM;
stl.ic_timout = 0;
stl.ic_dp = (char *)&numifs;
stl.ic_len = sizeof(int);
if ( (ret = ioctl(fd, I_STR, &stl)) == -1 ) {
perror("ioctl(I_STR)");
exit(1);
}
printf("numifs = %d\n", numifs);
return 0;
}
./a.out
numifs = 9
Darren
