/*
 * lxattr.c
 *
 * List extended attributes - simple wrapper for listxattr(2).
 *
 * This code is GPL.
 *
 * Author: James Morris <jmorris@namei.org>
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/xattr.h>

int main(int argc, char **argv)
{
	size_t r;
	int fd;
	char *fname, *buf, *p, *str;

	if (argc != 2)
		errx(1, "one filename required");

	fname = argv[1];
	
	fd = open(fname, O_RDONLY);
	if (fd == -1)
		err(1, "error opening \'%s\'", fname);
		
	r = flistxattr(fd, NULL, 0);
	if (r == -1)
		err(1, "error probing xattr list size for \'%s\'", fname);

	if (r == 0)
		return 0;

	buf = malloc(r);
	if (!buf)
		err(1, "error allocating xattr buffer");

	r = flistxattr(fd, buf, r);
	if (r == -1)
		err(1, "error obtaining xattr list for \'%s\'", fname);

	for (p = str = buf; p-buf < r; p++) {
		if (*p == '\0') {
			printf("%s\n", str);
			str = ++p;
		}
	}

	return 0;
}