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authorTao Bao <tbao@google.com>2015-09-08 20:05:49 +0200
committerTao Bao <tbao@google.com>2015-09-08 20:08:00 +0200
commit34847b2c70b7ce0483d8bf9c2d66c8f7d6ab62e9 (patch)
tree4c2ba1a6955ad440f8948be54c6753706edb7d92 /updater/blockimg.cpp
parentMerge "imgdiff: fix file descriptor leak" (diff)
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Diffstat (limited to 'updater/blockimg.cpp')
-rw-r--r--updater/blockimg.cpp55
1 files changed, 26 insertions, 29 deletions
diff --git a/updater/blockimg.cpp b/updater/blockimg.cpp
index 5f5f9bd72..091bedf53 100644
--- a/updater/blockimg.cpp
+++ b/updater/blockimg.cpp
@@ -378,19 +378,16 @@ static int WriteBlocks(const RangeSet& tgt, uint8_t* buffer, int fd) {
// <src_range> <tgt_range>
//
// The source range is loaded into the provided buffer, reallocating
-// it to make it larger if necessary. The target ranges are returned
-// in *tgt, if tgt is non-null.
+// it to make it larger if necessary.
-static int LoadSrcTgtVersion1(char** wordsave, RangeSet* tgt, size_t& src_blocks,
+static int LoadSrcTgtVersion1(char** wordsave, RangeSet& tgt, size_t& src_blocks,
uint8_t** buffer, size_t* buffer_alloc, int fd) {
char* word = strtok_r(nullptr, " ", wordsave);
RangeSet src;
parse_range(word, src);
- if (tgt != nullptr) {
- word = strtok_r(nullptr, " ", wordsave);
- parse_range(word, *tgt);
- }
+ word = strtok_r(nullptr, " ", wordsave);
+ parse_range(word, tgt);
allocate(src.size * BLOCKSIZE, buffer, buffer_alloc);
int rc = ReadBlocks(src, *buffer, fd);
@@ -730,9 +727,15 @@ static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
return 0;
}
- if (LoadSrcTgtVersion1(wordsave, nullptr, blocks, buffer, buffer_alloc, fd) == -1) {
+ char* word = strtok_r(nullptr, " ", wordsave);
+ RangeSet src;
+ parse_range(word, src);
+
+ allocate(src.size * BLOCKSIZE, buffer, buffer_alloc);
+ if (ReadBlocks(src, *buffer, fd) == -1) {
return -1;
}
+ blocks = src.size;
if (usehash && VerifyBlocks(id, *buffer, blocks, true) != 0) {
// Source blocks have unexpected contents. If we actually need this
@@ -791,7 +794,7 @@ static void MoveRange(uint8_t* dest, const RangeSet& locs, const uint8_t* source
// reallocated if needed to accommodate the source data. *tgt is the
// target RangeSet. Any stashes required are loaded using LoadStash.
-static int LoadSrcTgtVersion2(char** wordsave, RangeSet* tgt, size_t& src_blocks, uint8_t** buffer,
+static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks, uint8_t** buffer,
size_t* buffer_alloc, int fd, const std::string& stashbase, bool* overlap) {
char* word;
char* colonsave;
@@ -800,10 +803,8 @@ static int LoadSrcTgtVersion2(char** wordsave, RangeSet* tgt, size_t& src_blocks
size_t stashalloc = 0;
uint8_t* stash = nullptr;
- if (tgt != nullptr) {
- word = strtok_r(nullptr, " ", wordsave);
- parse_range(word, *tgt);
- }
+ word = strtok_r(nullptr, " ", wordsave);
+ parse_range(word, tgt);
word = strtok_r(nullptr, " ", wordsave);
src_blocks = strtol(word, nullptr, 0);
@@ -818,8 +819,8 @@ static int LoadSrcTgtVersion2(char** wordsave, RangeSet* tgt, size_t& src_blocks
parse_range(word, src);
int res = ReadBlocks(src, *buffer, fd);
- if (overlap && tgt) {
- *overlap = range_overlaps(src, *tgt);
+ if (overlap) {
+ *overlap = range_overlaps(src, tgt);
}
if (res == -1) {
@@ -902,13 +903,9 @@ struct CommandParameters {
// If the return value is 0, source blocks have expected content and the command
// can be performed.
-static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet* tgt, size_t& src_blocks,
+static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t& src_blocks,
bool onehash, bool& overlap) {
- if (!tgt) {
- return -1;
- }
-
char* srchash = strtok_r(nullptr, " ", &params.cpos);
if (srchash == nullptr) {
fprintf(stderr, "missing source hash\n");
@@ -932,13 +929,13 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet* tgt, size_t&
return -1;
}
- std::vector<uint8_t> tgtbuffer(tgt->size * BLOCKSIZE);
+ std::vector<uint8_t> tgtbuffer(tgt.size * BLOCKSIZE);
- if (ReadBlocks(*tgt, tgtbuffer.data(), params.fd) == -1) {
+ if (ReadBlocks(tgt, tgtbuffer.data(), params.fd) == -1) {
return -1;
}
- if (VerifyBlocks(tgthash, tgtbuffer.data(), tgt->size, false) == 0) {
+ if (VerifyBlocks(tgthash, tgtbuffer.data(), tgt.size, false) == 0) {
// Target blocks already have expected content, command should be skipped
fprintf(stderr, "verified, to return 1");
return 1;
@@ -989,13 +986,13 @@ static int PerformCommandMove(CommandParameters& params) {
RangeSet tgt;
if (params.version == 1) {
- status = LoadSrcTgtVersion1(&params.cpos, &tgt, blocks, &params.buffer,
+ status = LoadSrcTgtVersion1(&params.cpos, tgt, blocks, &params.buffer,
&params.bufsize, params.fd);
} else if (params.version == 2) {
- status = LoadSrcTgtVersion2(&params.cpos, &tgt, blocks, &params.buffer,
+ status = LoadSrcTgtVersion2(&params.cpos, tgt, blocks, &params.buffer,
&params.bufsize, params.fd, params.stashbase, nullptr);
} else if (params.version >= 3) {
- status = LoadSrcTgtVersion3(params, &tgt, blocks, true, overlap);
+ status = LoadSrcTgtVersion3(params, tgt, blocks, true, overlap);
}
if (status == -1) {
@@ -1149,13 +1146,13 @@ static int PerformCommandDiff(CommandParameters& params) {
size_t blocks = 0;
int status = 0;
if (params.version == 1) {
- status = LoadSrcTgtVersion1(&params.cpos, &tgt, blocks, &params.buffer,
+ status = LoadSrcTgtVersion1(&params.cpos, tgt, blocks, &params.buffer,
&params.bufsize, params.fd);
} else if (params.version == 2) {
- status = LoadSrcTgtVersion2(&params.cpos, &tgt, blocks, &params.buffer,
+ status = LoadSrcTgtVersion2(&params.cpos, tgt, blocks, &params.buffer,
&params.bufsize, params.fd, params.stashbase, nullptr);
} else if (params.version >= 3) {
- status = LoadSrcTgtVersion3(params, &tgt, blocks, false, overlap);
+ status = LoadSrcTgtVersion3(params, tgt, blocks, false, overlap);
}
if (status == -1) {