201 lines
6.4 KiB
C
201 lines
6.4 KiB
C
/*
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* The new sysinstall program.
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*
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* This is probably the last program in the `sysinstall' line - the next
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* generation being essentially a complete rewrite.
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*
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* $Id: package.c,v 1.7 1995/10/20 22:36:06 jkh Exp $
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*
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* Copyright (c) 1995
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* Jordan Hubbard. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* verbatim and that no modifications are made prior to this
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* point in the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Jordan Hubbard
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* for the FreeBSD Project.
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* 4. The name of Jordan Hubbard or the FreeBSD project may not be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/errno.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include "sysinstall.h"
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static char *make_playpen(char *pen, size_t sz);
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/* Extract a package based on a namespec and a media device */
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int
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package_extract(Device *dev, char *name)
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{
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char path[511];
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char pen[FILENAME_MAX];
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char *where;
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int i, fd, ret;
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/* Check to make sure it's not already there */
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if (!vsystem("pkg_info -e %s", name))
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return RET_SUCCESS;
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if (!dev->init(dev)) {
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msgConfirm("Unable to initialize media type for package add.");
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return RET_FAIL;
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}
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ret = RET_FAIL;
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sprintf(path, "packages/All/%s%s", name, strstr(name, ".tgz") ? "" : ".tgz");
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msgDebug("pkg_extract: Attempting to fetch %s\n", path);
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fd = dev->get(dev, path, TRUE);
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if (fd >= 0) {
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pid_t tpid;
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msgNotify("Fetching %s from %s", path, dev->name);
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pen[0] = '\0';
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if ((where = make_playpen(pen, 0)) != NULL) {
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if (isDebug())
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msgDebug("Working in temporary directory %s, will return to %s\n", pen, where);
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tpid = fork();
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if (!tpid) {
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dup2(fd, 0);
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i = vsystem("tar %s-xzf -", !strcmp(variable_get(CPIO_VERBOSITY_LEVEL), "high") ? "-v " : "");
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if (isDebug())
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msgDebug("tar command returns %d status\n", i);
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exit(i);
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}
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else {
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int pstat;
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tpid = waitpid(tpid, &pstat, 0);
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if (vsystem("(pwd; cat +CONTENTS) | pkg_add %s-S",
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!strcmp(variable_get(CPIO_VERBOSITY_LEVEL), "high") ? "-v " : ""))
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msgConfirm("An error occurred while trying to pkg_add %s.\n"
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"Please check debugging screen for possible further details.", path);
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else
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ret = RET_SUCCESS;
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close(fd);
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}
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if (chdir(where) == -1)
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msgFatal("Unable to get back to where I was before, Jojo! (That was: %s)", where);
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vsystem("rm -rf %s", pen);
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if (isDebug())
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msgDebug("Nuked pen: %s\n", pen);
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}
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else
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msgConfirm("Unable to find a temporary location to unpack this stuff in.\n"
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"You must simply not have enough space or you've configured your\n"
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"system oddly. Sorry!");
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dev->close(dev, fd);
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if (dev->type == DEVICE_TYPE_TAPE)
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unlink(path);
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}
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else
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msgDebug("pkg_extract: get operation returned %d\n", fd);
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return ret;
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}
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static size_t
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min_free(char *tmpdir)
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{
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struct statfs buf;
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if (statfs(tmpdir, &buf) != 0) {
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msgDebug("Error in statfs, errno = %d\n", errno);
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return -1;
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}
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return buf.f_bavail * buf.f_bsize;
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}
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/* Find a good place to play. */
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static char *
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find_play_pen(char *pen, size_t sz)
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{
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struct stat sb;
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if (pen[0] && stat(pen, &sb) != RET_FAIL && (min_free(pen) >= sz))
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return pen;
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else if (stat("/var/tmp", &sb) != RET_FAIL && min_free("/var/tmp") >= sz)
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strcpy(pen, "/var/tmp/instmp.XXXXXX");
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else if (stat("/tmp", &sb) != RET_FAIL && min_free("/tmp") >= sz)
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strcpy(pen, "/tmp/instmp.XXXXXX");
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else if ((stat("/usr/tmp", &sb) == RET_SUCCESS || mkdir("/usr/tmp", 01777) == RET_SUCCESS) &&
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min_free("/usr/tmp") >= sz)
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strcpy(pen, "/usr/tmp/instmp.XXXXXX");
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else {
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msgConfirm("Can't find enough temporary space to extract the files, please try\n"
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"This again after your system is up (you can run /stand/sysinstall\n"
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"directly) and you've had a chance to point /var/tmp somewhere with\n"
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"sufficient temporary space available.");
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return NULL;
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}
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return pen;
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}
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/*
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* Make a temporary directory to play in and chdir() to it, returning
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* pathname of previous working directory.
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*/
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static char *
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make_playpen(char *pen, size_t sz)
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{
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static char Previous[FILENAME_MAX];
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if (!find_play_pen(pen, sz))
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return NULL;
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if (!mktemp(pen)) {
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msgConfirm("Can't mktemp '%s'.", pen);
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return NULL;
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}
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if (mkdir(pen, 0755) == RET_FAIL) {
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msgConfirm("Can't mkdir '%s'.", pen);
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return NULL;
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}
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if (isDebug()) {
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if (sz)
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msgDebug("Requested space: %d bytes, free space: %d bytes in %s\n", (int)sz, min_free(pen), pen);
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}
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if (min_free(pen) < sz) {
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rmdir(pen);
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msgConfirm("Not enough free space to create: `%s'\n"
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"Please try this again after your system is up (you can run\n"
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"/stand/sysinstall directly) and you've had a chance to point\n"
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"/var/tmp somewhere with sufficient temporary space available.");
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return NULL;
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}
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if (!getcwd(Previous, FILENAME_MAX)) {
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msgConfirm("getcwd");
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return NULL;
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}
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if (chdir(pen) == RET_FAIL)
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msgConfirm("Can't chdir to '%s'.", pen);
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return Previous;
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}
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