| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <sys/stat.h> |
| |
| char *progname; |
| |
| static __noreturn usage(void) |
| { |
| fprintf(stderr, "Usage: %s link\n", progname); |
| exit(1); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| char *name, *link_name = NULL; |
| size_t max_siz = 128; |
| |
| progname = *argv++; |
| |
| name = *argv++; |
| if (!name) |
| usage(); |
| |
| link_name = malloc(max_siz); |
| if (!link_name) { |
| perror("malloc"); |
| exit(1); |
| } |
| |
| if (readlink(name, link_name, max_siz) == -1) { |
| perror("readlink"); |
| exit(1); |
| } |
| printf("%s\n", link_name); |
| |
| exit(0); |
| } |