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Merge pull request #243 from gv5470/patch-233-pr

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Linux: autodetect host drive name using sysfs (closes #233)
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Mounir IDRASSI 2017-11-28 22:56:20 +01:00 committed by GitHub
commit c5e48c56c9
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1 changed files with 23 additions and 0 deletions
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23
src/Platform/Unix/FilesystemPath.cpp
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@ -72,6 +72,29 @@ namespace VeraCrypt
path = StringConverter::StripTrailingNumber (StringConverter::ToSingle (Path));
// If simply removing trailing number didn't produce a valid drive name, try to use sysfs to get the right one
if (!path.IsDevice()) {
struct stat st;
if(stat (StringConverter::ToSingle (Path).c_str (), &st) == 0) {
const long maxPathLength = pathconf ("/", _PC_PATH_MAX);
if(maxPathLength != -1) {
string linkPathName ("/sys/dev/block/");
linkPathName += StringConverter::ToSingle (major (st.st_rdev)) + string (":") + StringConverter::ToSingle (minor (st.st_rdev));
char linkTargetPath[maxPathLength+1] = "";
if(readlink(linkPathName.c_str (), linkTargetPath, sizeof (linkTargetPath)) != -1) {
const string targetPathStr (linkTargetPath);
const size_t lastSlashPos = targetPathStr.find_last_of ('/');
const size_t secondLastSlashPos = targetPathStr.find_last_of ('/', lastSlashPos-1);
path = string ("/dev/") + targetPathStr.substr (secondLastSlashPos+1, lastSlashPos-secondLastSlashPos-1);
}
}
}
}
#elif defined (TC_MACOSX)
string pathStr = StringConverter::StripTrailingNumber (StringConverter::ToSingle (Path));