Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>

/*
 * Format:
  3 r  M    4 (0000000000457def 11 00)   8192      512 /rc/lib/rcmain
 */

int
iounit(int fd)
{
        int i, cfd;
        char buf[128], *args[10];

        snprint(buf, sizeof buf, "#d/%dctl", fd);
        cfd = open(buf, OREAD);
        if(cfd < 0)
                return 0;
        i = read(cfd, buf, sizeof buf-1);
        close(cfd);
        if(i <= 0)
                return 0;
        buf[i] = '\0';
        if(tokenize(buf, args, nelem(args)) != nelem(args))
                return 0;
        return atoi(args[7]);
}