blob: c07f48d175f43fdc2839a110a8832b7a0aefd7d3 [file] [log] [blame]
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <dirent.h>
#include <fs_mgr.h>
#define LOG_TAG "Vold"
#include "cutils/klog.h"
#include "cutils/log.h"
#include "cutils/properties.h"
#include "VolumeManager.h"
#include "CommandListener.h"
#include "NetlinkManager.h"
#include "DirectVolume.h"
#include "cryptfs.h"
#include "sehandle.h"
static int process_config(VolumeManager *vm);
static void coldboot(const char *path);
#define FSTAB_PREFIX "/fstab."
struct fstab *fstab;
struct selabel_handle *sehandle;
int main() {
VolumeManager *vm;
CommandListener *cl;
NetlinkManager *nm;
SLOGI("Vold 2.1 (the revenge) firing up");
sehandle = selinux_android_file_context_handle();
if (sehandle)
selinux_android_set_sehandle(sehandle);
mkdir("/dev/block/vold", 0755);
/* For when cryptfs checks and mounts an encrypted filesystem */
klog_set_level(6);
/* Create our singleton managers */
if (!(vm = VolumeManager::Instance())) {
SLOGE("Unable to create VolumeManager");
exit(1);
};
if (!(nm = NetlinkManager::Instance())) {
SLOGE("Unable to create NetlinkManager");
exit(1);
};
cl = new CommandListener();
vm->setBroadcaster((SocketListener *) cl);
nm->setBroadcaster((SocketListener *) cl);
if (vm->start()) {
SLOGE("Unable to start VolumeManager (%s)", strerror(errno));
exit(1);
}
if (process_config(vm)) {
SLOGE("Error reading configuration (%s)... continuing anyways", strerror(errno));
}
if (nm->start()) {
SLOGE("Unable to start NetlinkManager (%s)", strerror(errno));
exit(1);
}
coldboot("/sys/block");
// coldboot("/sys/class/switch");
/*
* Now that we're up, we can respond to commands
*/
if (cl->startListener()) {
SLOGE("Unable to start CommandListener (%s)", strerror(errno));
exit(1);
}
// Eventually we'll become the monitoring thread
while(1) {
sleep(1000);
}
SLOGI("Vold exiting");
exit(0);
}
static void do_coldboot(DIR *d, int lvl)
{
struct dirent *de;
int dfd, fd;
dfd = dirfd(d);
fd = openat(dfd, "uevent", O_WRONLY);
if(fd >= 0) {
write(fd, "add\n", 4);
close(fd);
}
while((de = readdir(d))) {
DIR *d2;
if (de->d_name[0] == '.')
continue;
if (de->d_type != DT_DIR && lvl > 0)
continue;
fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY);
if(fd < 0)
continue;
d2 = fdopendir(fd);
if(d2 == 0)
close(fd);
else {
do_coldboot(d2, lvl + 1);
closedir(d2);
}
}
}
static void coldboot(const char *path)
{
DIR *d = opendir(path);
if(d) {
do_coldboot(d, 0);
closedir(d);
}
}
static int process_config(VolumeManager *vm)
{
char fstab_filename[PROPERTY_VALUE_MAX + sizeof(FSTAB_PREFIX)];
char propbuf[PROPERTY_VALUE_MAX];
int i;
int ret = -1;
int flags;
property_get("ro.hardware", propbuf, "");
snprintf(fstab_filename, sizeof(fstab_filename), FSTAB_PREFIX"%s", propbuf);
fstab = fs_mgr_read_fstab(fstab_filename);
if (!fstab) {
SLOGE("failed to open %s\n", fstab_filename);
return -1;
}
/* Loop through entries looking for ones that vold manages */
for (i = 0; i < fstab->num_entries; i++) {
if (fs_mgr_is_voldmanaged(&fstab->recs[i])) {
DirectVolume *dv = NULL;
flags = 0;
/* Set any flags that might be set for this volume */
if (fs_mgr_is_nonremovable(&fstab->recs[i])) {
flags |= VOL_NONREMOVABLE;
}
if (fs_mgr_is_encryptable(&fstab->recs[i])) {
flags |= VOL_ENCRYPTABLE;
}
/* Only set this flag if there is not an emulated sd card */
if (fs_mgr_is_noemulatedsd(&fstab->recs[i]) &&
!strcmp(fstab->recs[i].fs_type, "vfat")) {
flags |= VOL_PROVIDES_ASEC;
}
dv = new DirectVolume(vm, &(fstab->recs[i]), flags);
if (dv->addPath(fstab->recs[i].blk_device)) {
SLOGE("Failed to add devpath %s to volume %s",
fstab->recs[i].blk_device, fstab->recs[i].label);
goto out_fail;
}
vm->addVolume(dv);
}
}
ret = 0;
out_fail:
return ret;
}