The Android Open Source Project | 8ac3a13 | 2009-01-20 14:04:01 -0800 | [diff] [blame^] | 1 | |
| 2 | /* |
| 3 | * Copyright (C) 2008 The Android Open Source Project |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #include <errno.h> |
| 19 | |
| 20 | #include <sys/mount.h> |
| 21 | |
| 22 | #include "vold.h" |
| 23 | #include "volmgr.h" |
| 24 | #include "volmgr_vfat.h" |
| 25 | #include "logwrapper.h" |
| 26 | |
| 27 | #define VFAT_DEBUG 0 |
| 28 | |
| 29 | static char FSCK_MSDOS_PATH[] = "/system/bin/dosfsck"; |
| 30 | |
| 31 | int vfat_identify(blkdev_t *dev) |
| 32 | { |
| 33 | #if VFAT_DEBUG |
| 34 | LOG_VOL("vfat_identify(%s):\n", dev->dev_fspath); |
| 35 | #endif |
| 36 | return 0; // XXX: Implement |
| 37 | } |
| 38 | |
| 39 | int vfat_check(blkdev_t *dev) |
| 40 | { |
| 41 | int rc; |
| 42 | |
| 43 | #if VFAT_DEBUG |
| 44 | LOG_VOL("vfat_check(%s):\n", dev->dev_fspath); |
| 45 | #endif |
| 46 | |
| 47 | if (access(FSCK_MSDOS_PATH, X_OK)) { |
| 48 | LOGE("vfat_check(%s): %s not found (skipping checks)\n", |
| 49 | FSCK_MSDOS_PATH, dev->dev_fspath); |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | #ifdef VERIFY_PASS |
| 54 | char *args[7]; |
| 55 | args[0] = FSCK_MSDOS_PATH; |
| 56 | args[1] = "-v"; |
| 57 | args[2] = "-V"; |
| 58 | args[3] = "-w"; |
| 59 | args[4] = "-p"; |
| 60 | args[5] = dev->dev_fspath; |
| 61 | args[6] = NULL; |
| 62 | rc = logwrap(6, args); |
| 63 | #else |
| 64 | char *args[6]; |
| 65 | args[0] = FSCK_MSDOS_PATH; |
| 66 | args[1] = "-v"; |
| 67 | args[2] = "-w"; |
| 68 | args[3] = "-p"; |
| 69 | args[4] = dev->dev_fspath; |
| 70 | args[5] = NULL; |
| 71 | rc = logwrap(5, args); |
| 72 | #endif |
| 73 | |
| 74 | if (rc == 0) { |
| 75 | LOG_VOL("Filesystem check completed OK\n"); |
| 76 | return 0; |
| 77 | } else if (rc == 1) { |
| 78 | LOG_VOL("Filesystem check failed (general failure)\n"); |
| 79 | return -EINVAL; |
| 80 | } else if (rc == 2) { |
| 81 | LOG_VOL("Filesystem check failed (invalid usage)\n"); |
| 82 | return -EIO; |
| 83 | } else if (rc == 4) { |
| 84 | LOG_VOL("Filesystem check completed (errors fixed)\n"); |
| 85 | } else { |
| 86 | LOG_VOL("Filesystem check failed (unknown exit code %d)\n", rc); |
| 87 | return -EIO; |
| 88 | } |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | int vfat_mount(blkdev_t *dev, volume_t *vol) |
| 93 | { |
| 94 | int flags, rc; |
| 95 | |
| 96 | #if VFAT_DEBUG |
| 97 | LOG_VOL("vfat_mount(%s, %s):\n", dev->dev_fspath, vol->mount_point); |
| 98 | #endif |
| 99 | |
| 100 | flags = MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_DIRSYNC; |
| 101 | rc = mount(dev->dev_fspath, vol->mount_point, "vfat", flags, |
| 102 | "utf8,uid=1000,gid=1000,fmask=711,dmask=700"); |
| 103 | |
| 104 | if (rc && errno == EROFS) { |
| 105 | LOGE("vfat_mount(%s, %s): Read only filesystem - retrying mount RO\n", |
| 106 | dev->dev_fspath, vol->mount_point); |
| 107 | flags |= MS_RDONLY; |
| 108 | rc = mount(dev->dev_fspath, vol->mount_point, "vfat", flags, |
| 109 | "utf8,uid=1000,gid=1000,fmask=711,dmask=700"); |
| 110 | } |
| 111 | |
| 112 | #if VFAT_DEBUG |
| 113 | LOG_VOL("vfat_mount(%s, %s): mount rc = %d\n", dev->dev_fspath, |
| 114 | vol->mount_point, rc); |
| 115 | #endif |
| 116 | return rc; |
| 117 | } |