c61c3a4ebf
* Run restorecon on /data/.layout_version * Fix firmware image mounting, remove obsolete fw_mounter * Add mechanism to append things to rc files
141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/*
|
|
* This file is part of MultiROM.
|
|
*
|
|
* MultiROM 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.
|
|
*
|
|
* MultiROM 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 MultiROM. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <dirent.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "rom_quirks.h"
|
|
#include "lib/log.h"
|
|
#include "lib/util.h"
|
|
|
|
static void workaround_mount_in_sh(const char *path)
|
|
{
|
|
char line[512];
|
|
char *tmp_name = NULL;
|
|
FILE *f_in, *f_out;
|
|
|
|
f_in = fopen(path, "re");
|
|
if(!f_in)
|
|
return;
|
|
|
|
const int size = strlen(path) + 5;
|
|
tmp_name = malloc(size);
|
|
snprintf(tmp_name, size, "%s-new", path);
|
|
f_out = fopen(tmp_name, "we");
|
|
if(!f_out)
|
|
{
|
|
fclose(f_in);
|
|
free(tmp_name);
|
|
return;
|
|
}
|
|
|
|
while(fgets(line, sizeof(line), f_in))
|
|
{
|
|
if(strstr(line, "mount ") && strstr(line, "/system"))
|
|
fputc('#', f_out);
|
|
fputs(line, f_out);
|
|
}
|
|
|
|
fclose(f_in);
|
|
fclose(f_out);
|
|
rename(tmp_name, path);
|
|
free(tmp_name);
|
|
}
|
|
|
|
static void inject_file_contexts(void)
|
|
{
|
|
FILE *f;
|
|
char line[512];
|
|
|
|
f = fopen("/file_contexts", "re");
|
|
if(!f)
|
|
{
|
|
ERROR("Failed to open /file_contexts!");
|
|
return;
|
|
}
|
|
|
|
while(fgets(line, sizeof(line), f))
|
|
{
|
|
if(strstartswith(line, "/data/media/multirom"))
|
|
{
|
|
INFO("/file_contexts has been already injected.");
|
|
fclose(f);
|
|
return;
|
|
}
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
INFO("Injecting /file_contexts\n");
|
|
f = fopen("/file_contexts", "ae");
|
|
if(!f)
|
|
{
|
|
ERROR("Failed to open /file_contexts for appending!");
|
|
return;
|
|
}
|
|
|
|
fputs("\n"
|
|
"# MultiROM folders\n"
|
|
"/data/media/multirom(/.*)? <<none>>\n"
|
|
"/data/media/0/multirom(/.*)? <<none>>\n"
|
|
"/realdata/media/multirom(/.*)? <<none>>\n"
|
|
"/realdata/media/0/multirom(/.*)? <<none>>\n"
|
|
"/mnt/mrom(/.*)? <<none>>\n",
|
|
f);
|
|
fclose(f);
|
|
}
|
|
|
|
void rom_quirks_on_initrd_finalized(void)
|
|
{
|
|
// walk over all _regular_ files in /
|
|
DIR *d = opendir("/");
|
|
if(d)
|
|
{
|
|
struct dirent *dt;
|
|
char buff[128];
|
|
while((dt = readdir(d)))
|
|
{
|
|
if(dt->d_type != DT_REG)
|
|
continue;
|
|
|
|
// The Android L and later releases have SELinux
|
|
// set to "enforcing" and "restorecon_recursive /data" line in init.rc.
|
|
// Restorecon on /data goes into /data/media/0/multirom/roms/ and changes
|
|
// context of all secondary ROMs files to that of /data, including the files
|
|
// in secondary ROMs /system dirs. We need to prevent that.
|
|
// Right now, we do that by adding entries into /file_contexts that say
|
|
// MultiROM folders don't have any context
|
|
if(strcmp(dt->d_name, "file_contexts") == 0)
|
|
inject_file_contexts();
|
|
|
|
// franco.Kernel includes script init.fk.sh which remounts /system as read only
|
|
// comment out lines with mount and /system in all .sh scripts in /
|
|
if(strendswith(dt->d_name, ".sh"))
|
|
{
|
|
snprintf(buff, sizeof(buff), "/%s", dt->d_name);
|
|
workaround_mount_in_sh(buff);
|
|
}
|
|
}
|
|
closedir(d);
|
|
}
|
|
}
|