blob: 2412612fbdff06ecf5bdc0b6d024739992af9230 [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>
#define LOG_TAG "Vold"
#include "cutils/log.h"
#include "VolumeManager.h"
#include "CommandListener.h"
#include "NetlinkManager.h"
#include "DirectVolume.h"
static int process_config(VolumeManager *vm);
static void coldboot(const char *path);
int main() {
VolumeManager *vm;
CommandListener *cl;
NetlinkManager *nm;
LOGI("Vold 2.0 (the revenge) firing up");
mkdir("/dev/block/vold", 0755);
/* Create our singleton managers */
if (!(vm = VolumeManager::Instance())) {
LOGE("Unable to create VolumeManager");
exit(1);
};
if (!(nm = NetlinkManager::Instance())) {
LOGE("Unable to create NetlinkManager");
exit(1);
};
cl = new CommandListener();
vm->setBroadcaster((SocketListener *) cl);
nm->setBroadcaster((SocketListener *) cl);
if (vm->start()) {
LOGE("Unable to start VolumeManager (%s)", strerror(errno));
exit(1);
}
if (process_config(vm)) {
LOGE("Error reading configuration (%s)", strerror(errno));
exit(1);
}
if (nm->start()) {
LOGE("Unable to start NetlinkManager (%s)", strerror(errno));
exit(1);
}
coldboot("/sys/block");
/*
* Switch uevents are broken.
* For now we manually bootstrap
* the ums switch
*/
{
FILE *fp;
char state[255];
if ((fp = fopen("/sys/devices/virtual/switch/usb_mass_storage/state",
"r"))) {
if (!fgets(state, sizeof(state), fp)) {
LOGE("Failed to read switch state (%s)", strerror(errno));
fclose(fp);
exit(1);
}
if (!strncmp(state, "online", 6)) {
LOGD("Bootstrapped ums is connected");
vm->notifyUmsConnected(true);
} else {
LOGD("Bootstrapped ums is disconnected");
vm->notifyUmsConnected(false);
}
fclose(fp);
} else {
LOGW("No UMS switch available");
}
}
// coldboot("/sys/class/switch");
/*
* Now that we're up, we can respond to commands
*/
if (cl->startListener()) {
LOGE("Unable to start CommandListener (%s)", strerror(errno));
exit(1);
}
// Eventually we'll become the monitoring thread
while(1) {
sleep(1000);
}
LOGI("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) {
FILE *fp;
int n = 0;
char line[255];
if (!(fp = fopen("/etc/vold.fstab", "r"))) {
return -1;
}
while(fgets(line, sizeof(line), fp)) {
char *next = line;
char *type, *label, *mount_point;
n++;
line[strlen(line)-1] = '\0';
if (line[0] == '#' || line[0] == '\0')
continue;
if (!(type = strsep(&next, " \t"))) {
LOGE("Error parsing type");
goto out_syntax;
}
if (!(label = strsep(&next, " \t"))) {
LOGE("Error parsing label");
goto out_syntax;
}
if (!(mount_point = strsep(&next, " \t"))) {
LOGE("Error parsing mount point");
goto out_syntax;
}
if (!strcmp(type, "dev_mount")) {
DirectVolume *dv = NULL;
char *part, *sysfs_path;
if (!(part = strsep(&next, " \t"))) {
LOGE("Error parsing partition");
goto out_syntax;
}
if (strcmp(part, "auto") && atoi(part) == 0) {
LOGE("Partition must either be 'auto' or 1 based index instead of '%s'", part);
goto out_syntax;
}
if (!strcmp(part, "auto")) {
dv = new DirectVolume(vm, label, mount_point, -1);
} else {
dv = new DirectVolume(vm, label, mount_point, atoi(part));
}
while((sysfs_path = strsep(&next, " \t"))) {
if (dv->addPath(sysfs_path)) {
LOGE("Failed to add devpath %s to volume %s", sysfs_path,
label);
goto out_fail;
}
}
vm->addVolume(dv);
} else if (!strcmp(type, "map_mount")) {
} else {
LOGE("Unknown type '%s'", type);
goto out_syntax;
}
}
fclose(fp);
return 0;
out_syntax:
LOGE("Syntax error on config line %d", n);
errno = -EINVAL;
out_fail:
fclose(fp);
return -1;
}