source: trunk/minix/lib/ip/gethostname.c@ 15

/* gethostname(2) system call emulation */

#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <net/gen/netdb.h>

#define HOSTNAME_FILE "/etc/hostname.file"

int gethostname(char *buf, size_t len)
{
        int fd;
        int r;
        char *nl;

        if ((fd= open(HOSTNAME_FILE, O_RDONLY)) < 0) return -1;

        r= read(fd, buf, len);
        close(fd);
        if (r == -1) return -1;

        buf[len-1]= '\0';
        if ((nl= strchr(buf, '\n')) != NULL) *nl= '\0';
        return 0;
}