pwdx.c revision 6db8529a785e2cab142e840b6e3fbdcc2c02dd1f 
1/* pwdx.c - report current directory of a process.
2 *
3 * Copyright 2013 Lukasz Skalski <l.skalski@partner.samsung.com>
4
5USE_PWDX(NEWTOY(pwdx, "<1a", TOYFLAG_USR|TOYFLAG_BIN))
6
7config PWDX
8  bool "pwdx"
9  default y
10  help
11    usage: pwdx PID...
12
13    Print working directory of processes listed on command line.
14*/
15
16#include "toys.h"
17
18void pwdx_main(void)
19{
20  char **optargs;
21
22  for (optargs = toys.optargs; *optargs; optargs++) {
23    char *path;
24    int num_bytes;
25
26    path = xmsprintf("/proc/%s/cwd", *optargs);
27    num_bytes = readlink(path, toybuf, sizeof(toybuf)-1);
28    free(path);
29
30    if (num_bytes==-1) {
31      path = strerror(errno);
32      toys.exitval = 1;
33    } else {
34      path = toybuf;
35      toybuf[num_bytes] = 0;
36    }
37    xprintf("%s: %s\n", *optargs, path);
38  }
39}
40