diff options
Diffstat (limited to 'usr.sbin/sysinstall/package.c')
| -rw-r--r-- | usr.sbin/sysinstall/package.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/usr.sbin/sysinstall/package.c b/usr.sbin/sysinstall/package.c new file mode 100644 index 0000000..082cd4e --- /dev/null +++ b/usr.sbin/sysinstall/package.c @@ -0,0 +1,192 @@ +/* + * The new sysinstall program. + * + * This is probably the last program in the `sysinstall' line - the next + * generation being essentially a complete rewrite. + * + * $Id: install.c,v 1.71.2.31 1995/10/15 04:37:05 jkh Exp $ + * + * Copyright (c) 1995 + * Jordan Hubbard. All rights reserved. + * + * 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, + * verbatim and that no modifications are made prior to this + * point in the file. + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Jordan Hubbard + * for the FreeBSD Project. + * 4. The name of Jordan Hubbard or the FreeBSD project may not be used to + * endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <sys/errno.h> +#include <sys/param.h> +#include <sys/mount.h> +#include <sys/stat.h> +#include "sysinstall.h" + +static char *make_playpen(char *pen, size_t sz); + +/* Extract a package based on a namespec and a media device */ +int +package_extract(Device *dev, char *name) +{ + char path[511]; + char pen[FILENAME_MAX]; + char *where; + int i, fd, ret; + + if (!dev->init(dev)) + return RET_FAIL; + + ret = RET_FAIL; + sprintf(path, "packages/%s%s", name, strstr(name, ".tgz") ? "" : ".tgz"); + fd = dev->get(dev, path, NULL); + if (fd >= 0) { + pid_t tpid; + + if (isDebug()) + msgDebug("Got target %s from media type %d\n", path, dev->type); + pen[0] = '\0'; + if ((where = make_playpen(pen, 0)) != NULL) { + if (isDebug()) + msgDebug("Working in temporary directory %s, will return to %s\n", pen, where); + tpid = fork(); + if (!tpid) { + dup2(fd, 0); + i = vsystem("tar %s-xzf -", !strcmp(variable_get(CPIO_VERBOSITY_LEVEL), "high") ? "-v " : ""); + if (isDebug()) + msgDebug("tar command returns %d status\n", i); + exit(i); + } + else { + int pstat; + + close(fd); + tpid = waitpid(tpid, &pstat, 0); + if (vsystem("(pwd; cat +CONTENTS) | pkg_add %s-S", + variable_get(CPIO_VERBOSITY_LEVEL), "high") ? "-v " : "") + msgConfirm("An error occurred while trying to pkg_add %s.\n" + "Please check debugging screen for possible further details.", path); + else + ret = RET_SUCCESS; + } + if (chdir(where) == -1) + msgFatal("Unable to get back to where I was before, Jojo!\n(That was: %s)\n", where); + vsystem("rm -rf %s", pen); + if (isDebug()) + msgDebug("Nuked pen: %s\n", pen); + } + else + msgConfirm("Unable to find a temporary location to unpack this stuff in.\n" + "You must simply not have enough space or you've configured your\n" + "system oddly. Sorry!"); + dev->close(dev, fd); + if (dev->type == DEVICE_TYPE_TAPE) + unlink(path); + } + return ret; +} + +static size_t +min_free(char *tmpdir) +{ + struct statfs buf; + + if (statfs(tmpdir, &buf) != 0) { + msgDebug("Error in statfs, errno = %d\n", errno); + return -1; + } + return buf.f_bavail * buf.f_bsize; +} + +/* Find a good place to play. */ +static char * +find_play_pen(char *pen, size_t sz) +{ + struct stat sb; + + if (pen[0] && stat(pen, &sb) != RET_FAIL && (min_free(pen) >= sz)) + return pen; + else if (stat("/var/tmp", &sb) != RET_FAIL && min_free("/var/tmp") >= sz) + strcpy(pen, "/var/tmp/instmp.XXXXXX"); + else if (stat("/tmp", &sb) != RET_FAIL && min_free("/tmp") >= sz) + strcpy(pen, "/tmp/instmp.XXXXXX"); + else if ((stat("/usr/tmp", &sb) == RET_SUCCESS || mkdir("/usr/tmp", 01777) == RET_SUCCESS) && + min_free("/usr/tmp") >= sz) + strcpy(pen, "/usr/tmp/instmp.XXXXXX"); + else { + msgConfirm("Can't find enough temporary space to extract the files, please try\n" + "This again after your system is up (you can run /stand/sysinstall\n" + "directly) and you've had a chance to point /var/tmp somewhere with\n" + "sufficient temporary space available."); + return NULL; + } + return pen; +} + +/* + * Make a temporary directory to play in and chdir() to it, returning + * pathname of previous working directory. + */ +static char * +make_playpen(char *pen, size_t sz) +{ + static char Previous[FILENAME_MAX]; + + if (!find_play_pen(pen, sz)) + return NULL; + + if (!mktemp(pen)) { + msgConfirm("Can't mktemp '%s'.", pen); + return NULL; + } + if (mkdir(pen, 0755) == RET_FAIL) { + msgConfirm("Can't mkdir '%s'.", pen); + return NULL; + } + if (isDebug()) { + if (sz) + msgDebug("Requested space: %d bytes, free space: %d bytes in %s\n", (int)sz, min_free(pen), pen); + } + if (min_free(pen) < sz) { + rmdir(pen); + msgConfirm("Not enough free space to create: `%s'\n" + "Please try this again after your system is up (you can run\n" + "/stand/sysinstall directly) and you've had a chance to point\n" + "/var/tmp somewhere with sufficient temporary space available."); + return NULL; + } + if (!getcwd(Previous, FILENAME_MAX)) { + msgConfirm("getcwd"); + return NULL; + } + if (chdir(pen) == RET_FAIL) + msgConfirm("Can't chdir to '%s'.", pen); + return Previous; +} |
