openkylin
/
platform_system_core
mirror of https://gitee.com/openkylin/platform_system_core.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge "fs_mgr: support upstream dm-verity without error correction"

This commit is contained in:
Sami Tolvanen 2015-12-10 20:13:02 +00:00 committed by Gerrit Code Review
parent 0d1214c68e ff980d22d1
commit 907ec7daa7
1 changed files with 36 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
fs_mgr/fs_mgr_verity.cpp
View File

@ -254,7 +254,7 @@ static bool format_verity_table(char *buf, const size_t bufsize,
res = snprintf(buf, bufsize, "%s 2 " VERITY_TABLE_OPT_IGNZERO " %s", params->table,
mode_flag);
} else {
res = strlcpy(buf, params->table, bufsize);
res = snprintf(buf, bufsize, "%s 1 " VERITY_TABLE_OPT_IGNZERO, params->table);
}
if (res < 0 || (size_t)res >= bufsize) {
@ -944,13 +944,43 @@ int fs_mgr_setup_verity(struct fstab_rec *fstab)
// load the verity mapping table
if (load_verity_table(io, mount_point, verity.data_size, fd, &params,
format_verity_table) < 0 &&
// try the legacy format for backwards compatibility
load_verity_table(io, mount_point, verity.data_size, fd, &params,
format_legacy_verity_table) < 0) {
goto out;
format_verity_table) == 0) {
goto loaded;
}
if (params.ecc.valid) {
// kernel may not support error correction, try without
INFO("Disabling error correction for %s\n", mount_point);
params.ecc.valid = false;
if (load_verity_table(io, mount_point, verity.data_size, fd, &params,
format_verity_table) == 0) {
goto loaded;
}
}
// try the legacy format for backwards compatibility
if (load_verity_table(io, mount_point, verity.data_size, fd, &params,
format_legacy_verity_table) == 0) {
goto loaded;
}
if (params.mode != VERITY_MODE_EIO) {
// as a last resort, EIO mode should always be supported
INFO("Falling back to EIO mode for %s\n", mount_point);
params.mode = VERITY_MODE_EIO;
if (load_verity_table(io, mount_point, verity.data_size, fd, &params,
format_legacy_verity_table) == 0) {
goto loaded;
}
}
ERROR("Failed to load verity table for %s\n", mount_point);
goto out;
loaded:
// activate the device
if (resume_verity_table(io, mount_point, fd) < 0) {
goto out;