add OS version string

indra/llcommon/llsys.cpp

@@ -80,6 +80,7 @@ using namespace llsd;
 #	include <sys/sysinfo.h>
 #   include <stdexcept>
 const char MEMINFO_FILE[] = "/proc/meminfo";
+#   include <gnu/libc-version.h>
 #elif LL_SOLARIS
 #	include <stdio.h>
 #	include <unistd.h>
@@ -176,7 +177,7 @@ bool get_shell32_dll_version(DWORD& major, DWORD& minor, DWORD& build_number)
 #endif // LL_WINDOWS
 
 LLOSInfo::LLOSInfo() :
-	mMajorVer(0), mMinorVer(0), mBuild(0)
+	mMajorVer(0), mMinorVer(0), mBuild(0), mOSVersionString("")	 
 {
 
 #if LL_WINDOWS
@@ -412,6 +413,102 @@ LLOSInfo::LLOSInfo() :
 		mOSString = mOSStringSimple;
 	}
 	
+#elif LL_LINUX
+	
+	struct utsname un;
+	if(uname(&un) != -1)
+	{
+		mOSStringSimple.append(un.sysname);
+		mOSStringSimple.append(" ");
+		mOSStringSimple.append(un.release);
+
+		mOSString = mOSStringSimple;
+		mOSString.append(" ");
+		mOSString.append(un.version);
+		mOSString.append(" ");
+		mOSString.append(un.machine);
+
+		// Simplify 'Simple'
+		std::string ostype = mOSStringSimple.substr(0, mOSStringSimple.find_first_of(" ", 0));
+		if (ostype == "Linux")
+		{
+			// Only care about major and minor Linux versions, truncate at second '.'
+			std::string::size_type idx1 = mOSStringSimple.find_first_of(".", 0);
+			std::string::size_type idx2 = (idx1 != std::string::npos) ? mOSStringSimple.find_first_of(".", idx1+1) : std::string::npos;
+			std::string simple = mOSStringSimple.substr(0, idx2);
+			if (simple.length() > 0)
+				mOSStringSimple = simple;
+		}
+	}
+	else
+	{
+		mOSStringSimple.append("Unable to collect OS info");
+		mOSString = mOSStringSimple;
+	}
+
+	const char* OS_VERSION_MATCH_EXPRESSION[] = "([0-9]+)\.([0-9]+)(\.([0-9]+))?";
+	boost::regex os_version_parse(OS_VERSION_MATCH_EXPRESSION);
+	boost::smatch matched;
+
+	std::string glibc_version(gnu_get_libc_version());
+	if ( regex_match_no_exc(glibc_version, matched, os_version_parse) )
+	{
+		LL_INFOS("AppInit") << "Using glibc version '" << glibc_version << "' as OS version" << LL_ENDL;
+	
+		std::string version_value;
+
+		if ( matched[1].matched ) // Major version
+		{
+			version_value.assign(matched[1].first, matched[1].second);
+			if (sscanf("%d", &mMajorVer) != 1)
+			{
+				LL_WARNS("AppInit") << "failed to parse major version '" << version_value "' as a number" << LL_ENDL;
+			}
+		}
+		else
+		{
+			LL_ERRS("AppInit")
+				<< "OS version regex '" << OS_VERSION_MATCH_EXPRESSION 
+				<< "' returned true, but major version [1] did not match"
+				<< LL_ENDL;
+		}
+
+		if ( matched[2].matched ) // Minor version
+		{
+			version_value.assign(matched[2].first, matched[2].second);
+			if (sscanf("%d", &mMinorVer) != 1)
+			{
+				LL_ERRS("AppInit") << "failed to parse minor version '" << version_value "' as a number" << LL_ENDL;
+			}
+		}
+		else
+		{
+			LL_ERRS("AppInit")
+				<< "OS version regex '" << OS_VERSION_MATCH_EXPRESSION 
+				<< "' returned true, but minor version [1] did not match"
+				<< LL_ENDL;
+		}
+
+		if ( matched[4].matched ) // Build version (optional) - note that [3] includes the '.'
+		{
+			version_value.assign(matched[4].first, matched[4].second);
+			if (sscanf("%d", &mBuild) != 1)
+			{
+				LL_ERRS("AppInit") << "failed to parse build version '" << version_value "' as a number" << LL_ENDL;
+			}
+		}
+		else
+		{
+			LL_INFOS("AppInit")
+				<< "OS build version not provided; using zero"
+				<< LL_ENDL;
+		}
+	}
+	else
+	{
+		LL_WARNS("AppInit") << "glibc version '" << glibc_version << "' cannot be parsed to three numbers; using all zeros" << LL_ENDL;
+	}
+
 #else
 	
 	struct utsname un;
@@ -444,8 +541,13 @@ LLOSInfo::LLOSInfo() :
 		mOSStringSimple.append("Unable to collect OS info");
 		mOSString = mOSStringSimple;
 	}
+
 #endif
 
+	std::stringstream dotted_version_string;
+	dotted_version_string << mMajorVer << "." << mMinorVer << "." << mBuild;
+	mOSVersionString.append(dotted_version_string.str());
+
 }
 
 #ifndef LL_WINDOWS
@@ -496,6 +598,11 @@ const std::string& LLOSInfo::getOSStringSimple() const
 	return mOSStringSimple;
 }
 
+const std::string& LLOSInfo::getOSVersionString() const
+{
+	return mOSVersionString;
+}
+
 const S32 STATUS_SIZE = 8192;
 
 //static

indra/llcommon/llsys.h

@@ -49,6 +49,8 @@ class LL_COMMON_API LLOSInfo
 	const std::string& getOSString() const;
 	const std::string& getOSStringSimple() const;
 
+	const std::string& getOSVersionString() const;
+	
 	S32 mMajorVer;
 	S32 mMinorVer;
 	S32 mBuild;
@@ -62,6 +64,7 @@ class LL_COMMON_API LLOSInfo
 private:
 	std::string mOSString;
 	std::string mOSStringSimple;
+	std::string mOSVersionString;
 };