freebsd-dev/usr.sbin/pkg_install/lib/pen.c

75 lines
1.8 KiB
C

#ifndef lint
static const char *rcsid = "$Id: pen.c,v 1.2 1993/09/04 05:06:51 jkh Exp $";
#endif
/*
* FreeBSD install - a package for the installation and maintainance
* of non-core utilities.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Jordan K. Hubbard
* 18 July 1993
*
* Routines for managing the "play pen".
*
*/
#include "lib.h"
/* For keeping track of where we are */
static char Cwd[FILENAME_MAX];
static char Pen[FILENAME_MAX];
/*
* Make a temporary directory to play in and chdir() to it, returning
* pathname of previous working directory.
*/
char *
make_playpen(char *pen)
{
if (!pen)
pen = "/tmp/instmp.XXXXXX";
if (!getcwd(Cwd, FILENAME_MAX))
upchuck("getcwd");
strcpy(Pen, pen);
if (!mktemp(Pen))
barf("Can't mktemp '%s'.", Pen);
if (mkdir(Pen, 0755) == FAIL)
barf("Can't mkdir '%s'.", Pen);
if (chdir(Pen) == FAIL)
barf("Can't chdir to '%s'.", Pen);
return Cwd;
}
/* Convenience routine for getting out of playpen */
void
leave_playpen(void)
{
if (Cwd[0]) {
if (chdir(Cwd) == FAIL)
barf("Can't chdir back to '%s'.", Cwd);
if (vsystem("rm -rf %s", Pen))
fprintf(stderr, "Couldn't remove temporary dir '%s'\n", Pen);
Cwd[0] = '\0';
}
}
/* Accessor function for telling us where the pen is */
char *
where_playpen(void)
{
if (Cwd[0])
return Pen;
else
return NULL;
}