cryptfs: [HACK] reboot if the crypto block dev failed to open
There are cases where the /dev/block/dm-0 fails to open.
This leads to the device not completing the boot up sequence.
Currently, the only way out is to reboot.
Bug: 17898962
Change-Id: If4583ebb1ef1ebdbaf680d69b876459aaec2f4ce
diff --git a/cryptfs.c b/cryptfs.c
index 5d42b46..a56bf62 100644
--- a/cryptfs.c
+++ b/cryptfs.c
@@ -2434,20 +2434,20 @@
}
if ( (data.cryptofd = open(crypto_blkdev, O_WRONLY)) < 0) {
- SLOGE("Error opening crypto_blkdev %s for inplace encrypt. err=%d(%s)\n",
+ SLOGE("Error opening crypto_blkdev %s for ext4 inplace encrypt. err=%d(%s)\n",
crypto_blkdev, errno, strerror(errno));
- rc = -1;
+ rc = ENABLE_INPLACE_ERR_DEV;
goto errout;
}
if (setjmp(setjmp_env)) {
- SLOGE("Reading extent caused an exception");
+ SLOGE("Reading ext4 extent caused an exception\n");
rc = -1;
goto errout;
}
if (read_ext(data.realfd, 0) != 0) {
- SLOGE("Failed to read extent");
+ SLOGE("Failed to read ext4 extent\n");
rc = -1;
goto errout;
}
@@ -2456,7 +2456,7 @@
data.tot_numblocks = tot_size / CRYPT_SECTORS_PER_BUFSIZE;
data.blocks_already_done = *size_already_done / CRYPT_SECTORS_PER_BUFSIZE;
- SLOGI("Encrypting filesystem in place...");
+ SLOGI("Encrypting ext4 filesystem in place...");
data.tot_used_blocks = data.numblocks;
for (i = 0; i < aux_info.groups; ++i) {
@@ -2524,12 +2524,12 @@
off64_t offset = pos * CRYPT_INPLACE_BUFSIZE;
if (pread64(priv_dat->realfd, priv_dat->buffer, CRYPT_INPLACE_BUFSIZE, offset) <= 0) {
- SLOGE("Error reading real_blkdev %s for inplace encrypt", priv_dat->crypto_blkdev);
+ SLOGE("Error reading real_blkdev %s for f2fs inplace encrypt", priv_dat->crypto_blkdev);
return -1;
}
if (pwrite64(priv_dat->cryptofd, priv_dat->buffer, CRYPT_INPLACE_BUFSIZE, offset) <= 0) {
- SLOGE("Error writing crypto_blkdev %s for inplace encrypt", priv_dat->crypto_blkdev);
+ SLOGE("Error writing crypto_blkdev %s for f2fs inplace encrypt", priv_dat->crypto_blkdev);
return -1;
} else {
log_progress_f2fs(pos, false);
@@ -2548,10 +2548,10 @@
u32 i;
struct encryptGroupsData data;
struct f2fs_info *f2fs_info = NULL;
- int rc = -1;
+ int rc = ENABLE_INPLACE_ERR_OTHER;
if (previously_encrypted_upto > *size_already_done) {
SLOGD("Not fast encrypting since resuming part way through");
- return -1;
+ return ENABLE_INPLACE_ERR_OTHER;
}
memset(&data, 0, sizeof(data));
data.real_blkdev = real_blkdev;
@@ -2559,13 +2559,14 @@
data.realfd = -1;
data.cryptofd = -1;
if ( (data.realfd = open64(real_blkdev, O_RDWR)) < 0) {
- SLOGE("Error opening real_blkdev %s for inplace encrypt\n",
+ SLOGE("Error opening real_blkdev %s for f2fs inplace encrypt\n",
real_blkdev);
goto errout;
}
if ( (data.cryptofd = open64(crypto_blkdev, O_WRONLY)) < 0) {
- SLOGE("Error opening crypto_blkdev %s for inplace encrypt. err=%d(%s)\n",
+ SLOGE("Error opening crypto_blkdev %s for f2fs inplace encrypt. err=%d(%s)\n",
crypto_blkdev, errno, strerror(errno));
+ rc = ENABLE_INPLACE_ERR_DEV;
goto errout;
}
@@ -2596,7 +2597,8 @@
rc = run_on_used_blocks(data.blocks_already_done, f2fs_info, &encrypt_one_block_f2fs, &data);
if (rc) {
- SLOGE("Error in running over blocks");
+ SLOGE("Error in running over f2fs blocks");
+ rc = ENABLE_INPLACE_ERR_OTHER;
goto errout;
}
@@ -2623,21 +2625,21 @@
{
int realfd, cryptofd;
char *buf[CRYPT_INPLACE_BUFSIZE];
- int rc = -1;
+ int rc = ENABLE_INPLACE_ERR_OTHER;
off64_t numblocks, i, remainder;
off64_t one_pct, cur_pct, new_pct;
off64_t blocks_already_done, tot_numblocks;
if ( (realfd = open(real_blkdev, O_RDONLY)) < 0) {
SLOGE("Error opening real_blkdev %s for inplace encrypt\n", real_blkdev);
- return -1;
+ return ENABLE_INPLACE_ERR_OTHER;
}
if ( (cryptofd = open(crypto_blkdev, O_WRONLY)) < 0) {
SLOGE("Error opening crypto_blkdev %s for inplace encrypt. err=%d(%s)\n",
crypto_blkdev, errno, strerror(errno));
close(realfd);
- return -1;
+ return ENABLE_INPLACE_ERR_DEV;
}
/* This is pretty much a simple loop of reading 4K, and writing 4K.
@@ -2736,11 +2738,13 @@
return rc;
}
+/* returns on of the ENABLE_INPLACE_* return codes */
static int cryptfs_enable_inplace(char *crypto_blkdev, char *real_blkdev,
off64_t size, off64_t *size_already_done,
off64_t tot_size,
off64_t previously_encrypted_upto)
{
+ int rc_ext4, rc_f2fs, rc_full;
if (previously_encrypted_upto) {
SLOGD("Continuing encryption from %" PRId64, previously_encrypted_upto);
}
@@ -2754,21 +2758,32 @@
* As is, cryptfs_enable_inplace_ext4 will fail on an f2fs partition, and
* then we will drop down to cryptfs_enable_inplace_f2fs.
* */
- if (cryptfs_enable_inplace_ext4(crypto_blkdev, real_blkdev,
+ if ((rc_ext4 = cryptfs_enable_inplace_ext4(crypto_blkdev, real_blkdev,
size, size_already_done,
- tot_size, previously_encrypted_upto) == 0) {
+ tot_size, previously_encrypted_upto)) == 0) {
return 0;
}
+ SLOGD("cryptfs_enable_inplace_ext4()=%d\n", rc_ext4);
- if (cryptfs_enable_inplace_f2fs(crypto_blkdev, real_blkdev,
+ if ((rc_f2fs = cryptfs_enable_inplace_f2fs(crypto_blkdev, real_blkdev,
size, size_already_done,
- tot_size, previously_encrypted_upto) == 0) {
+ tot_size, previously_encrypted_upto)) == 0) {
return 0;
}
+ SLOGD("cryptfs_enable_inplace_f2fs()=%d\n", rc_f2fs);
- return cryptfs_enable_inplace_full(crypto_blkdev, real_blkdev,
+ rc_full = cryptfs_enable_inplace_full(crypto_blkdev, real_blkdev,
size, size_already_done, tot_size,
previously_encrypted_upto);
+ SLOGD("cryptfs_enable_inplace_full()=%d\n", rc_full);
+
+ /* Hack for b/17898962, the following is the symptom... */
+ if (rc_ext4 == ENABLE_INPLACE_ERR_DEV
+ && rc_f2fs == ENABLE_INPLACE_ERR_DEV
+ && rc_full == ENABLE_INPLACE_ERR_DEV) {
+ return ENABLE_INPLACE_ERR_DEV;
+ }
+ return rc_full;
}
#define CRYPTO_ENABLE_WIPE 1
@@ -2848,6 +2863,12 @@
tot_encryption_size,
previously_encrypted_upto);
+ if (rc == ENABLE_INPLACE_ERR_DEV) {
+ /* Hack for b/17898962 */
+ SLOGE("cryptfs_enable: crypto block dev failure. Must reboot...\n");
+ cryptfs_reboot(reboot);
+ }
+
if (!rc) {
crypt_ftr->encrypted_upto = cur_encryption_done;
}