261 lines
7.2 KiB
C
261 lines
7.2 KiB
C
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2016.
|
|
|
|
This program is free software: you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by the Free
|
|
Software Foundation, either version 3 of the License, or (at your option)
|
|
any later version.
|
|
|
|
This program is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
sysmerge.c
|
|
Upgrade current operating system from a sysroot.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "conf.h"
|
|
#include "execute.h"
|
|
#include "fileops.h"
|
|
#include "manifest.h"
|
|
#include "release.h"
|
|
|
|
static void compact_arguments(int* argc, char*** argv)
|
|
{
|
|
for ( int i = 0; i < *argc; i++ )
|
|
{
|
|
while ( i < *argc && !(*argv)[i] )
|
|
{
|
|
for ( int n = i; n < *argc; n++ )
|
|
(*argv)[n] = (*argv)[n+1];
|
|
(*argc)--;
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool has_pending_upgrade(void)
|
|
{
|
|
return access_or_die("/boot/sortix.bin.sysmerge.orig", F_OK) == 0 ||
|
|
access_or_die("/boot/sortix.initrd.sysmerge.orig", F_OK) == 0 ||
|
|
access_or_die("/sysmerge", F_OK) == 0;
|
|
}
|
|
|
|
static void help(FILE* fp, const char* argv0)
|
|
{
|
|
fprintf(fp, "Usage: %s [OPTION]... SOURCE\n", argv0);
|
|
fprintf(fp, "Merge the files from SOURCE onto the current system.\n");
|
|
}
|
|
|
|
static void version(FILE* fp, const char* argv0)
|
|
{
|
|
fprintf(fp, "%s (Sortix) %s\n", argv0, VERSIONSTR);
|
|
fprintf(fp, "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n");
|
|
fprintf(fp, "This is free software: you are free to change and redistribute it.\n");
|
|
fprintf(fp, "There is NO WARRANTY, to the extent permitted by law.\n");
|
|
}
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
setvbuf(stdout, NULL, _IOLBF, 0); // Pipes.
|
|
|
|
bool cancel = false;
|
|
bool booting = false;
|
|
bool wait = false;
|
|
|
|
const char* argv0 = argv[0];
|
|
for ( int i = 1; i < argc; i++ )
|
|
{
|
|
const char* arg = argv[i];
|
|
if ( arg[0] != '-' || !arg[1] )
|
|
continue;
|
|
argv[i] = NULL;
|
|
if ( !strcmp(arg, "--") )
|
|
break;
|
|
if ( arg[1] != '-' )
|
|
{
|
|
char c;
|
|
while ( (c = *++arg) ) switch ( c )
|
|
{
|
|
case 'w': wait = true; break;
|
|
default:
|
|
fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, c);
|
|
help(stderr, argv0);
|
|
exit(1);
|
|
}
|
|
}
|
|
else if ( !strcmp(arg, "--help") )
|
|
help(stdout, argv0), exit(0);
|
|
else if ( !strcmp(arg, "--version") )
|
|
version(stdout, argv0), exit(0);
|
|
else if ( !strcmp(arg, "--cancel") )
|
|
cancel = true;
|
|
else if ( !strcmp(arg, "--booting") )
|
|
booting = true;
|
|
else if ( !strcmp(arg, "--wait") )
|
|
wait = true;
|
|
else
|
|
{
|
|
fprintf(stderr, "%s: unknown option: %s\n", argv0, arg);
|
|
help(stderr, argv0);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
compact_arguments(&argc, &argv);
|
|
|
|
const char* source;
|
|
if ( cancel )
|
|
{
|
|
source = NULL;
|
|
if ( 1 < argc )
|
|
err(2, "Unexpected extra operand `%s'", argv[2]);
|
|
}
|
|
else if ( booting )
|
|
{
|
|
source = "/sysmerge";
|
|
if ( 1 < argc )
|
|
err(2, "Unexpected extra operand `%s'", argv[2]);
|
|
}
|
|
else
|
|
{
|
|
if ( argc < 2 )
|
|
err(2, "No source operand was given");
|
|
source = argv[1];
|
|
if ( 2 < argc )
|
|
err(2, "Unexpected extra operand `%s'", argv[2]);
|
|
}
|
|
|
|
if ( booting )
|
|
{
|
|
}
|
|
else if ( has_pending_upgrade() )
|
|
{
|
|
rename("/boot/sortix.bin.sysmerge.orig", "/boot/sortix.bin");
|
|
rename("/boot/sortix.initrd.sysmerge.orig", "/boot/sortix.initrd");
|
|
execute((const char*[]) { "rm", "-rf", "/sysmerge", NULL }, "");
|
|
execute((const char*[]) { "update-initrd", NULL }, "_e");
|
|
printf("Cancelled pending system upgrade.\n");
|
|
}
|
|
else if ( cancel )
|
|
printf("No system upgrade was pending.\n");
|
|
|
|
if ( cancel )
|
|
return 0;
|
|
|
|
const char* old_release_path = "/etc/sortix-release";
|
|
struct release old_release;
|
|
if ( !os_release_load(&old_release, old_release_path, old_release_path) )
|
|
exit(2);
|
|
|
|
char* new_release_path;
|
|
if ( asprintf(&new_release_path, "%s/etc/sortix-release", source) < 0 )
|
|
err(2, "asprintf");
|
|
struct release new_release;
|
|
if ( !os_release_load(&new_release, new_release_path, new_release_path) )
|
|
exit(2);
|
|
free(new_release_path);
|
|
|
|
// TODO: Check if /etc/machine matches the current architecture.
|
|
// TODO: Check for version (skipping, downgrading).
|
|
|
|
struct conf conf;
|
|
load_upgrade_conf(&conf, "/etc/upgrade.conf");
|
|
|
|
bool can_run_old_abi = old_release.abi_major == new_release.abi_major &&
|
|
old_release.abi_minor <= new_release.abi_minor;
|
|
if ( !can_run_old_abi && !wait )
|
|
{
|
|
printf("Incompatible %lu.%lu -> %lu.%lu ABI transition, "
|
|
"delaying upgrade to next boot.\n",
|
|
old_release.abi_major, old_release.abi_major,
|
|
new_release.abi_major, new_release.abi_major);
|
|
wait = true;
|
|
}
|
|
|
|
const char* target;
|
|
if ( wait )
|
|
{
|
|
printf("Scheduling upgrade to %s on next boot using %s:\n",
|
|
new_release.pretty_name, source);
|
|
target = "/sysmerge";
|
|
if ( mkdir(target, 0755) < 0 )
|
|
err(2, "%s", target);
|
|
execute((const char*[]) { "tix-collection", "/sysmerge", "create",
|
|
NULL }, "_e");
|
|
}
|
|
else
|
|
{
|
|
printf("Upgrading to %s using %s:\n", new_release.pretty_name, source);
|
|
target = "";
|
|
}
|
|
|
|
install_manifest("system", source, target);
|
|
install_ports(source, target);
|
|
|
|
if ( wait )
|
|
{
|
|
printf(" - Scheduling upgrade on next boot...\n");
|
|
execute((const char*[]) { "cp", "/boot/sortix.bin",
|
|
"/boot/sortix.bin.sysmerge.orig" }, "_e");
|
|
execute((const char*[]) { "cp", "/boot/sortix.initrd",
|
|
"/boot/sortix.initrd.sysmerge.orig" }, "_e");
|
|
execute((const char*[]) { "cp", "/sysmerge/boot/sortix.bin",
|
|
"/boot/sortix.bin" }, "_e");
|
|
execute((const char*[]) { "/sysmerge/sbin/update-initrd", NULL }, "_e");
|
|
|
|
printf("The system will be upgraded to %s on the next boot.\n",
|
|
new_release.pretty_name);
|
|
printf("Run %s --cancel to cancel the upgrade.\n", argv[0]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
if ( !wait && access_or_die("/etc/fstab", F_OK) == 0 )
|
|
{
|
|
printf(" - Creating initrd...\n");
|
|
execute((const char*[]) { "update-initrd", NULL }, "_e");
|
|
|
|
if ( conf.grub )
|
|
{
|
|
// TODO: Figure out the root device.
|
|
//printf(" - Installing bootloader...\n");
|
|
//execute((const char*[]) { "grub-install", "/", NULL }, "_eqQ");
|
|
printf(" - Configuring bootloader...\n");
|
|
execute((const char*[]) { "update-grub", NULL }, "_eqQ");
|
|
}
|
|
else if ( access_or_die("/etc/grub.d/10_sortix", F_OK) == 0 )
|
|
{
|
|
printf(" - Creating bootloader fragment...\n");
|
|
execute((const char*[]) { "/etc/grub.d/10_sortix", NULL }, "_eq");
|
|
}
|
|
}
|
|
|
|
if ( booting )
|
|
{
|
|
unlink("/boot/sortix.bin.sysmerge.orig");
|
|
unlink("/boot/sortix.initrd.sysmerge.orig");
|
|
execute((const char*[]) { "rm", "-rf", "/sysmerge", NULL }, "");
|
|
}
|
|
|
|
printf("Successfully upgraded to %s.\n", new_release.pretty_name);
|
|
|
|
return 0;
|
|
}
|