1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 #include <fcntl.h> 5 #include <errno.h> 6 7 int 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
