1 #include "software_utils.hpp" 2 3 #include <phosphor-logging/lg2.hpp> 4 5 PHOSPHOR_LOG2_USING; 6 7 namespace phosphor::software::utils 8 { 9 10 static bool writeToFile(int imageFd, FILE* outStream) 11 { 12 const int bSize = 100; 13 ssize_t nRead = 0; 14 unsigned char buf[bSize]; 15 16 while ((nRead = read(imageFd, buf, bSize)) > 0) 17 { 18 if (fwrite(buf, 1, nRead, outStream) != (size_t)nRead) 19 { 20 error("Failed to write to file"); 21 return false; 22 } 23 } 24 if (nRead < 0) 25 { 26 error("Failed to read from input file"); 27 return false; 28 } 29 return true; 30 } 31 32 bool unTar(int imageFd, const std::string& extractDirPath) 33 { 34 std::string tarCmd = "tar -xf - -C " + extractDirPath + " --no-same-owner"; 35 info("Executing command: {CMD}", "CMD", tarCmd); 36 FILE* outStream = popen(tarCmd.c_str(), "w"); 37 if (outStream == nullptr) 38 { 39 error("Failed to open pipe to execute command: {CMD}", "CMD", tarCmd); 40 return false; 41 } 42 43 if (!writeToFile(imageFd, outStream)) 44 { 45 error("Failed to write to file"); 46 pclose(outStream); 47 return false; 48 } 49 50 if (pclose(outStream) != 0) 51 { 52 error("Failed to close pipe"); 53 return false; 54 } 55 return true; 56 } 57 58 } // namespace phosphor::software::utils 59 60 boost::asio::io_context& getIOContext() 61 { 62 static boost::asio::io_context io; 63 return io; 64 } 65