int find_number_of_mounts(void)
{
const char *mount;
gchar **mounts;
int mountpoints = 0, i = 0;
mount = find_mounts();
if(mount)
{
mounts = g_strsplit(mount, ",", 0);
/* check amount of mountpoints */
for(i=0 ; mounts[i] != NULL; i++)
{
mountpoints++;
}
}
return(mountpoints);
}
static int set_mass_storage_mode(struct mode_list_elem *data)
{
gchar *command;
char command2[256], *real_path = NULL, *mountpath;
const char *mount;
gchar **mounts;
int ret = 0, i = 0, mountpoints = 0, fua = 0, try = 0;
/* send unmount signal so applications can release their grasp on the fs, do this here so they have time to act */
usb_moded_send_signal(USB_PRE_UNMOUNT);
fua = find_sync();
mount = find_mounts();
if(mount)
{
mounts = g_strsplit(mount, ",", 0);
/* check amount of mountpoints */
for(i=0 ; mounts[i] != NULL; i++)
{
mountpoints++;
}
if(strcmp(data->mode_module, MODULE_NONE))
{
/* check if the file storage module has been loaded with sufficient luns in the parameter,
if not, unload and reload or load it. Since mountpoints start at 0 the amount of them is one more than their id */
sprintf(command2, "/sys/devices/platform/musb_hdrc/gadget/gadget-lun%d/file", (mountpoints - 1) );
if(access(command2, R_OK) == -1)
{
log_debug("%s does not exist, unloading and reloading mass_storage\n", command2);
usb_moded_unload_module(MODULE_MASS_STORAGE);
sprintf(command2, "modprobe %s luns=%d \n", MODULE_MASS_STORAGE, mountpoints);
log_debug("usb-load command = %s \n", command2);
ret = system(command2);
if(ret)
return(ret);
}
}
/* umount filesystems */
for(i=0 ; mounts[i] != NULL; i++)
{
/* check if filesystem is mounted or not, if ret = 1 it is already unmounted */
real_path = realpath(mounts[i], NULL);
if(real_path)
mountpath = real_path;
else
mountpath = mounts[i];
umount: command = g_strconcat("mount | grep ", mountpath, NULL);
ret = system(command);
g_free(command);
if(!ret)
{
/* no check for / needed as that will fail to umount anyway */
command = g_strconcat("umount ", mountpath, NULL);
log_debug("unmount command = %s\n", command);
ret = system(command);
g_free(command);
if(ret != 0)
{
if(try != 3)
{
try++;
sleep(1);
log_err("Umount failed. Retrying\n");
report_mass_storage_blocker(mount, 1);
goto umount;
}
else
{
log_err("Unmounting %s failed\n", mount);
report_mass_storage_blocker(mount, 2);
usb_moded_send_error_signal(UMOUNT_ERROR);
return(ret);
}
}
}
else
/* already unmounted. Set return value to 0 since there is no error */
ret = 0;
}
/* activate mounts after sleeping 1s to be sure enumeration happened and autoplay will work in windows*/
usleep(1800);
for(i=0 ; mounts[i] != NULL; i++)
{
if(strcmp(data->mode_module, MODULE_NONE))
{
sprintf(command2, "echo %i > /sys/devices/platform/musb_hdrc/gadget/gadget-lun%d/nofua", fua, i);
log_debug("usb lun = %s active\n", command2);
system(command2);
sprintf(command2, "/sys/devices/platform/musb_hdrc/gadget/gadget-lun%d/file", i);
log_debug("usb lun = %s active\n", command2);
write_to_file(command2, mounts[i]);
}
else
{
write_to_file("/sys/class/android_usb/android0/enable", "0");
write_to_file("/sys/class/android_usb/android0/functions", "mass_storage");
//write_to_file("/sys/class/android_usb/f_mass_storage/lun/nofua", fua);
write_to_file("/sys/class/android_usb/f_mass_storage/lun/file", mount);
write_to_file("/sys/class/android_usb/android0/enable", "1");
}
}
g_strfreev(mounts);
g_free((gpointer *)mount);
if(real_path)
free(real_path);
}
