| /* See LICENSE file for copyright and license details. */ |
| #include <limits.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include "util.h" |
| |
| static void |
| usage(void) |
| { |
| eprintf("usage: %s [-fn] path\n", argv0); |
| } |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| char buf[PATH_MAX]; |
| ssize_t n; |
| int nflag = 0, fflag = 0; |
| |
| ARGBEGIN { |
| case 'f': |
| fflag = ARGC(); |
| break; |
| case 'n': |
| nflag = 1; |
| break; |
| default: |
| usage(); |
| } ARGEND |
| |
| if (argc != 1) |
| usage(); |
| |
| if (strlen(argv[0]) >= PATH_MAX) |
| eprintf("path too long\n"); |
| |
| if (fflag) { |
| if (!realpath(argv[0], buf)) |
| eprintf("realpath %s:", argv[0]); |
| } else { |
| if ((n = readlink(argv[0], buf, PATH_MAX - 1)) < 0) |
| eprintf("readlink %s:", argv[0]); |
| buf[n] = '\0'; |
| } |
| |
| fputs(buf, stdout); |
| if (!nflag) |
| putchar('\n'); |
| |
| return fshut(stdout, "<stdout>"); |
| } |