Files
alcove/c_src/sys/chroot.c
2015-07-04 07:19:48 -04:00

42 lines
1.3 KiB
C

/* Copyright (c) 2014, Michael Santos <michael.santos@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "alcove.h"
#include "alcove_call.h"
/*
* chroot(2)
*
*/
ssize_t
alcove_sys_chroot(alcove_state_t *ap, const char *arg, size_t len,
char *reply, size_t rlen)
{
int index = 0;
char path[PATH_MAX] = {0};
size_t pathlen = sizeof(path)-1;
int rv = 0;
/* path */
if (alcove_decode_iolist(arg, len, &index, path, &pathlen) < 0 ||
pathlen == 0)
return -1;
rv = chroot(path);
return (rv < 0)
? alcove_mk_errno(reply, rlen, errno)
: alcove_mk_atom(reply, rlen, "ok");
}