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Include <stdlib.h> for getenv() prototype. 

Use standard error message routines.
This commit is contained in:
jtc 1994-01-07 20:34:23 +00:00
parent 92992e3c3a
commit fbdf4e031f
1 changed files with 8 additions and 16 deletions
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24
usr.sbin/chroot/chroot.c
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@ -39,43 +39,35 @@ char copyright[] =
#ifndef lint
/*static char sccsid[] = "from: @(#)chroot.c 5.8 (Berkeley) 6/1/90";*/
static char rcsid[] = "$Id: chroot.c,v 1.3 1993/08/01 18:00:20 mycroft Exp $";
static char rcsid[] = "$Id: chroot.c,v 1.4 1994/01/07 20:34:23 jtc Exp $";
#endif /* not lint */
#include <stdio.h>
#include <paths.h>
#include <stdlib.h>
#include <string.h>
#include <paths.h>
#include <err.h>
main(argc, argv)
int argc;
char **argv;
{
extern int errno;
char *shell, *getenv();
char *shell;
if (argc < 2) {
(void)fprintf(stderr, "usage: chroot newroot [command]\n");
exit(1);
}
if (chdir(argv[1]) || chroot("."))
fatal(argv[1]);
err(1, "%s", argv[1]);
if (argv[2]) {
execvp(argv[2], &argv[2]);
fatal(argv[2]);
err(1, "%s", argv[2]);
} else {
if (!(shell = getenv("SHELL")))
shell = _PATH_BSHELL;
execlp(shell, shell, "-i", (char *)NULL);
fatal(shell);
err(1, "%s", shell);
}
/* NOTREACHED */
}
fatal(msg)
char *msg;
{
extern int errno;
(void)fprintf(stderr, "chroot: %s: %s\n", msg, strerror(errno));
exit(1);
}