summaryrefslogtreecommitdiffstats
path: root/fuse_sdcard_provider.c
diff options
context:
space:
mode:
authorTao Bao <tbao@google.com>2015-07-19 17:40:37 +0200
committerTao Bao <tbao@google.com>2015-07-24 20:22:05 +0200
commit0d4e002670064157aa34ba8c391184151b7d402a (patch)
treee9f4b33d1ffa2c30c371abf40453d52690e1403c /fuse_sdcard_provider.c
parentam 6e9dda70: uncrypt: Support file level encryption. (diff)
downloadandroid_bootable_recovery-0d4e002670064157aa34ba8c391184151b7d402a.tar
android_bootable_recovery-0d4e002670064157aa34ba8c391184151b7d402a.tar.gz
android_bootable_recovery-0d4e002670064157aa34ba8c391184151b7d402a.tar.bz2
android_bootable_recovery-0d4e002670064157aa34ba8c391184151b7d402a.tar.lz
android_bootable_recovery-0d4e002670064157aa34ba8c391184151b7d402a.tar.xz
android_bootable_recovery-0d4e002670064157aa34ba8c391184151b7d402a.tar.zst
android_bootable_recovery-0d4e002670064157aa34ba8c391184151b7d402a.zip
Diffstat (limited to 'fuse_sdcard_provider.c')
-rw-r--r--fuse_sdcard_provider.c140
1 files changed, 0 insertions, 140 deletions
diff --git a/fuse_sdcard_provider.c b/fuse_sdcard_provider.c
deleted file mode 100644
index 4565c7b5b..000000000
--- a/fuse_sdcard_provider.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- * Copyright (C) 2014 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 <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <pthread.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-#include "fuse_sideload.h"
-
-struct file_data {
- int fd; // the underlying sdcard file
-
- uint64_t file_size;
- uint32_t block_size;
-};
-
-static int read_block_file(void* cookie, uint32_t block, uint8_t* buffer, uint32_t fetch_size) {
- struct file_data* fd = (struct file_data*)cookie;
-
- off64_t offset = ((off64_t) block) * fd->block_size;
- if (TEMP_FAILURE_RETRY(lseek64(fd->fd, offset, SEEK_SET)) == -1) {
- fprintf(stderr, "seek on sdcard failed: %s\n", strerror(errno));
- return -EIO;
- }
-
- while (fetch_size > 0) {
- ssize_t r = TEMP_FAILURE_RETRY(read(fd->fd, buffer, fetch_size));
- if (r == -1) {
- fprintf(stderr, "read on sdcard failed: %s\n", strerror(errno));
- return -EIO;
- }
- fetch_size -= r;
- buffer += r;
- }
-
- return 0;
-}
-
-static void close_file(void* cookie) {
- struct file_data* fd = (struct file_data*)cookie;
- close(fd->fd);
-}
-
-struct token {
- pthread_t th;
- const char* path;
- int result;
-};
-
-static void* run_sdcard_fuse(void* cookie) {
- struct token* t = (struct token*)cookie;
-
- struct stat sb;
- if (stat(t->path, &sb) < 0) {
- fprintf(stderr, "failed to stat %s: %s\n", t->path, strerror(errno));
- t->result = -1;
- return NULL;
- }
-
- struct file_data fd;
- struct provider_vtab vtab;
-
- fd.fd = open(t->path, O_RDONLY);
- if (fd.fd < 0) {
- fprintf(stderr, "failed to open %s: %s\n", t->path, strerror(errno));
- t->result = -1;
- return NULL;
- }
- fd.file_size = sb.st_size;
- fd.block_size = 65536;
-
- vtab.read_block = read_block_file;
- vtab.close = close_file;
-
- t->result = run_fuse_sideload(&vtab, &fd, fd.file_size, fd.block_size);
- return NULL;
-}
-
-// How long (in seconds) we wait for the fuse-provided package file to
-// appear, before timing out.
-#define SDCARD_INSTALL_TIMEOUT 10
-
-void* start_sdcard_fuse(const char* path) {
- struct token* t = malloc(sizeof(struct token));
-
- t->path = path;
- pthread_create(&(t->th), NULL, run_sdcard_fuse, t);
-
- struct stat st;
- int i;
- for (i = 0; i < SDCARD_INSTALL_TIMEOUT; ++i) {
- if (stat(FUSE_SIDELOAD_HOST_PATHNAME, &st) != 0) {
- if (errno == ENOENT && i < SDCARD_INSTALL_TIMEOUT-1) {
- sleep(1);
- continue;
- } else {
- return NULL;
- }
- }
- }
-
- // The installation process expects to find the sdcard unmounted.
- // Unmount it with MNT_DETACH so that our open file continues to
- // work but new references see it as unmounted.
- umount2("/sdcard", MNT_DETACH);
-
- return t;
-}
-
-void finish_sdcard_fuse(void* cookie) {
- if (cookie == NULL) return;
- struct token* t = (struct token*)cookie;
-
- // Calling stat() on this magic filename signals the fuse
- // filesystem to shut down.
- struct stat st;
- stat(FUSE_SIDELOAD_HOST_EXIT_PATHNAME, &st);
-
- pthread_join(t->th, NULL);
- free(t);
-}