xref: /openbmc/phosphor-bmc-code-mgmt/bmc/software_utils.cpp (revision cab87e9cdeeb3e166d6d577511f6be4dc7721aca)
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 
writeToFile(int imageFd,FILE * outStream)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 
unTar(int imageFd,const std::string & extractDirPath)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 
getIOContext()60 boost::asio::io_context& getIOContext()
61 {
62     static boost::asio::io_context io;
63     return io;
64 }
65