1 #include <stdio.h> 2 #include <unistd.h> 3 #include <string.h> 4 #include <errno.h> 5 6 static int usage() 7 { 8 fprintf(stderr,"ln [-s] <target> <name>\n"); 9 return -1; 10 } 11 12 int ln_main(int argc, char *argv[]) 13 { 14 int symbolic = 0; 15 int ret; 16 if(argc < 2) return usage(); 17 18 if(!strcmp(argv[1],"-s")) { 19 symbolic = 1; 20 argc--; 21 argv++; 22 } 23 24 if(argc < 3) return usage(); 25 26 if(symbolic) { 27 ret = symlink(argv[1], argv[2]); 28 } else { 29 ret = link(argv[1], argv[2]); 30 } 31 if(ret < 0) 32 fprintf(stderr, "link failed %s\n", strerror(errno)); 33 return ret; 34 } 35
