195 static bool discard_blocks(int fd, off64_t offset, uint64_t size, bool force = false) {  in discard_blocks()  argument
201   uint64_t args[2] = { static_cast<uint64_t>(offset), size };  in discard_blocks()
213 static bool check_lseek(int fd, off64_t offset, int whence) {  in check_lseek()  argument
214     off64_t rc = TEMP_FAILURE_RETRY(lseek64(fd, offset, whence));  in check_lseek()
306     off64_t offset = static_cast<off64_t>(range.first) * BLOCKSIZE;  in SeekToOutputRange()  local
310     if (!discard_blocks(fd_, offset, current_range_left_)) {  in SeekToOutputRange()
313     if (!check_lseek(fd_, offset, SEEK_SET)) {  in SeekToOutputRange()
505     off64_t offset = static_cast<off64_t>(begin) * BLOCKSIZE;  in WriteBlocks()  local
507     if (!discard_blocks(fd, offset, size)) {  in WriteBlocks()
511     if (!check_lseek(fd, offset, SEEK_SET)) {  in WriteBlocks()
1291       off64_t offset = static_cast<off64_t>(begin) * BLOCKSIZE;  in PerformCommandZero()  local
1293       if (!discard_blocks(params.fd, offset, size)) {  in PerformCommandZero()
1297       if (!check_lseek(params.fd, offset, SEEK_SET)) {  in PerformCommandZero()
1361   size_t offset;  in PerformCommandDiff()  local
1362   if (!android::base::ParseUint(params.tokens[params.cpos++], &offset)) {  in PerformCommandDiff()
1396           std::string(reinterpret_cast<const char*>(params.patch_start + offset), len));  in PerformCommandDiff()
1469       off64_t offset = static_cast<off64_t>(begin) * BLOCKSIZE;  in PerformCommandErase()  local
1471       if (!discard_blocks(params.fd, offset, size, true /* force */)) {  in PerformCommandErase()
1695   params.patch_start = updater->GetMappedPackageAddress() + patch_entry.offset;  in PerformBlockImageUpdate()