From 454d8cb805e633aaa1c6456a57ec9c2dc6c6e163 Mon Sep 17 00:00:00 2001 From: Tao Bao Date: Thu, 22 Mar 2018 16:07:00 -0700 Subject: update_verifier: Support verifying product partition. We have added the support for building /product partition in build system (the CL in [1]), where /product is an optional partition that contains system files. This CL adds the matching support if /product needs to be verified during A/B OTA (i.e. listed in care_map file). [1]: commit b7735d81054002961b681f4bdf296d4de2701135, https://android-review.googlesource.com/c/platform/build/+/598454 Bug: 63974895 Test: Run update_verifier test on walleye. Change-Id: Ia1c35e9583b8e66c98a4495b1f81a5ea7e65036f (cherry picked from commit ec2e8c6c1ef3cbafa129ade95abca3203e062b5f) --- update_verifier/update_verifier.cpp | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'update_verifier') diff --git a/update_verifier/update_verifier.cpp b/update_verifier/update_verifier.cpp index c5e154f03..92d931371 100644 --- a/update_verifier/update_verifier.cpp +++ b/update_verifier/update_verifier.cpp @@ -74,14 +74,13 @@ static int dm_name_filter(const dirent* de) { } static bool read_blocks(const std::string& partition, const std::string& range_str) { - if (partition != "system" && partition != "vendor") { - LOG(ERROR) << "partition name must be system or vendor: " << partition; + if (partition != "system" && partition != "vendor" && partition != "product") { + LOG(ERROR) << "Invalid partition name \"" << partition << "\""; return false; } - // Iterate the content of "/sys/block/dm-X/dm/name". If it matches "system" - // (or "vendor"), then dm-X is a dm-wrapped system/vendor partition. - // Afterwards, update_verifier will read every block on the care_map_file of - // "/dev/block/dm-X" to ensure the partition's integrity. + // Iterate the content of "/sys/block/dm-X/dm/name". If it matches one of "system", "vendor" or + // "product", then dm-X is a dm-wrapped device for that target. We will later read all the + // ("cared") blocks from "/dev/block/dm-X" to ensure the target partition's integrity. static constexpr auto DM_PATH_PREFIX = "/sys/block/"; dirent** namelist; int n = scandir(DM_PATH_PREFIX, &namelist, dm_name_filter, alphasort); @@ -206,10 +205,9 @@ bool verify_image(const std::string& care_map_name) { PLOG(WARNING) << "Failed to open " << care_map_name; return true; } - // Care map file has four lines (two lines if vendor partition is not present): - // First line has the block partition name (system/vendor). - // Second line holds all ranges of blocks to verify. - // The next two lines have the same format but for vendor partition. + // care_map file has up to six lines, where every two lines make a pair. Within each pair, the + // first line has the partition name (e.g. "system"), while the second line holds the ranges of + // all the blocks to verify. std::string file_content; if (!android::base::ReadFdToString(care_map_fd.get(), &file_content)) { LOG(ERROR) << "Error reading care map contents to string."; @@ -218,9 +216,9 @@ bool verify_image(const std::string& care_map_name) { std::vector lines; lines = android::base::Split(android::base::Trim(file_content), "\n"); - if (lines.size() != 2 && lines.size() != 4) { + if (lines.size() != 2 && lines.size() != 4 && lines.size() != 6) { LOG(ERROR) << "Invalid lines in care_map: found " << lines.size() - << " lines, expecting 2 or 4 lines."; + << " lines, expecting 2 or 4 or 6 lines."; return false; } -- cgit v1.2.3