int ensure_volume_unmounted(fstab_rec* v, bool detach) {
if (v == NULL) {
LOGE("cannot unmount unknown volume\n");
return -1;
}
if (strcmp(v->fs_type, "ramdisk") == 0) {
// the ramdisk is always mounted; you can't unmount it.
return -1;
}
int result;
result = scan_mounted_volumes();
if (result < 0) {
LOGE("failed to scan mounted volumes\n");
return -1;
}
if (fs_mgr_is_voldmanaged(v)) {
if (!strcmp(v->mount_point, "auto")) {
return vold_unmount_auto_volume(v->label, 0, 1, detach);
}
return vold_unmount_volume(v->mount_point, 0, 1, detach);
}
const MountedVolume* mv =
find_mounted_volume_by_mount_point(v->mount_point);
if (mv == NULL) {
// volume is already unmounted
return 0;
}
if (detach) {
result = unmount_mounted_volume_detach(mv);
}
else {
result = unmount_mounted_volume(mv);
}
return result;
}
int ensure_path_unmounted(const char* path) {
// if we are using /data/media, do not ever unmount volumes /data or /sdcard
if (is_data_media_volume_path(path)) {
return ensure_path_unmounted("/data");
}
if (strstr(path, "/data") == path && is_data_media() && !ignore_data_media) {
return 0;
}
Volume* v = volume_for_path(path);
if (v == NULL) {
LOGE("unknown volume for path [%s]\n", path);
return -1;
}
if (strcmp(v->fs_type, "ramdisk") == 0) {
// the ramdisk is always mounted; you can't unmount it.
return -1;
}
int result;
result = scan_mounted_volumes();
if (result < 0) {
LOGE("failed to scan mounted volumes\n");
return -1;
}
const MountedVolume* mv =
find_mounted_volume_by_mount_point(v->mount_point);
if (mv == NULL) {
// volume is already unmounted
return 0;
}
if (fs_mgr_is_voldmanaged(volume_for_path(v->mount_point)))
return vold_unmount_volume(v->mount_point, 0, 1) == CommandOkay ? 0 : -1;
return unmount_mounted_volume(mv);
}
