usr/utils/readlink.c

#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) {
		exit(1);
	}
	printf("%s\n", link_name);

	exit(0);
}
1	niro	532	#include <stdio.h>
2			#include <stdlib.h>
3			#include <unistd.h>
4			#include <sys/stat.h>
5
6			char *progname;
7
8			static __noreturn usage(void)
9			{
10			fprintf(stderr, "Usage: %s link\n", progname);
11			exit(1);
12			}
13
14			int main(int argc, char *argv[])
15			{
16	niro	815	char name, link_name = NULL;
17	niro	532	size_t max_siz = 128;
18
19			progname = *argv++;
20
21			name = *argv++;
22			if (!name)
23			usage();
24
25	niro	815	link_name = malloc(max_siz);
26			if (!link_name) {
27	niro	532	perror("malloc");
28			exit(1);
29			}
30
31	niro	815	if (readlink(name, link_name, max_siz) == -1) {
32	niro	532	exit(1);
33			}
34	niro	815	printf("%s\n", link_name);
35	niro	532
36			exit(0);
37			}