1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <fcntl.h>
5#include <errno.h>
6
7int smd_main(int argc, char **argv)
8{
9    int fd, len, r, port = 0;
10    char devname[32];
11    argc--;
12    argv++;
13
14    if((argc > 0) && (argv[0][0] == '-')) {
15        port = atoi(argv[0] + 1);
16        argc--;
17        argv++;
18    }
19
20    sprintf(devname,"/dev/smd%d",port);
21    fd = open(devname, O_WRONLY);
22    if(fd < 0) {
23        fprintf(stderr,"failed to open smd0 - %s\n",
24            strerror(errno));
25        return -1;
26    }
27    while(argc > 0) {
28        len = strlen(argv[0]);
29        r = write(fd, argv[0], len);
30        if(r != len) {
31            fprintf(stderr,"failed to write smd0 (%d) %s\n",
32                r, strerror(errno));
33            return -1;
34        }
35        argc--;
36        argv++;
37        write(fd, argc ? " " : "\r", 1);
38    }
39    close(fd);
40    return 0;
41}
42