GopherProxy

	pwdx.c - ubase - suckless linux base utils
	git clone git://git.suckless.org/ubase
	Log
	Files
	Refs
	README
	LICENSE
	---
	pwdx.c (857B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <errno.h>
	3 #include <limits.h>
	4 #include <stdio.h>
	5 #include <string.h>
	6 #include <unistd.h>
	7
	8 #include "util.h"
	9
	10 static void
	11 usage(void)
	12 {
	13 eprintf("usage: %s pid...\n", argv0);
	14 }
	15
	16 int
	17 main(int argc, char *argv[])
	18 {
	19 int ret = 0;
	20 char path[PATH_MAX];
	21 char target[PATH_MAX + sizeof(" (deleted)")];
	22 ssize_t n;
	23
	24 ARGBEGIN {
	25 default:
	26 usage();
	27 } ARGEND;
	28
	29 if (argc == 0)
	30 usage();
	31
	32 for (; argc > 0; argc--, argv++) {
	33 n = snprintf(path, sizeof(path), "/proc/%s/cwd", *argv);
	34 if (n < 0 \|\| n >= sizeof(path)) {
	35 errno = ESRCH;
	36 } else {
	37 n = readlink(path, target, sizeof(target) - 1);
	38 if (n >= 0) {
	39 target[n] = '\0';
	40 printf("%s: %s\n", *argv, target);
	41 continue;
	42 }
	43 }
	44 if (errno == ENOENT)
	45 errno = ESRCH;
	46 weprintf("%s:", *argv);
	47 ret = 1;
	48 }
	49
	50 return ret;
	51 }