bzr commit into mysql-6.0-falcon branch (cpowers:2807) Bug#39098

[Christopher Powers]

#At file:///home/cpowers/work/dev/dev-06/mysql/

 2807 Christopher Powers	2008-08-29 [merge]
      Bug #39098, Falcon sometimes reports 'Invalid serial log directory path'
      
      Incorporated patch provided by Lars-Erik, which works on OpenSuSE but fails on
Windows
      Fixed Windows code in IO::isDirectory()
modified:
  storage/falcon/Configuration.cpp
  storage/falcon/IO.cpp
  storage/falcon/IOx.h
  storage/falcon/ha_falcon.cpp

per-file messages:
  storage/falcon/Configuration.cpp
    Verify directory path using IO class rather than ScanDir
  storage/falcon/IO.cpp
    Added IO::isDirectory()
  storage/falcon/IOx.h
    Added IO:isDirectory()
  storage/falcon/ha_falcon.cpp
    Fixed compiler warning in StorageInterface::getDemographics()
=== modified file 'storage/falcon/Configuration.cpp'
--- a/storage/falcon/Configuration.cpp	2008-08-19 14:27:42 +0000
+++ b/storage/falcon/Configuration.cpp	2008-08-29 20:41:13 +0000
@@ -146,10 +146,7 @@ Configuration::Configuration(const char 
 	
 		// Verify that the directory exists
 		
-		ScanDir scanDir(serialLogDir, "*.*");
-		scanDir.next();
-		
-		if (!scanDir.isDirectory())
+		if (!io.isDirectory(serialLogDir.getString()))
 			{
 			fprintf(stderr, 
 					"Falcon: The specified serial log directory, \"%s\", "

=== modified file 'storage/falcon/IO.cpp'
--- a/storage/falcon/IO.cpp	2008-08-18 20:17:15 +0000
+++ b/storage/falcon/IO.cpp	2008-08-29 20:41:13 +0000
@@ -456,12 +456,10 @@ void IO::expandFileName(const char *file
 	const char *path;
 	JString fname = getPath(fileName);
 	fileName = fname.getString();
-
 #ifdef _WIN32
 	char *base;
-	
+
 	GetFullPathName(fileName, sizeof (expandedName), expandedName, &base);
-	
 	path = expandedName;
 #else
 	const char *base;
@@ -510,6 +508,43 @@ bool IO::doesFileExist(const char *fileN
 	return fileStat(fileName, &stats, &errnum) == 0;
 }
 
+bool IO::isDirectory(const char *path)
+{
+	struct stat buf;
+	char tmpPath[PATH_MAX+1];
+
+#ifdef _WIN32	
+	strncpy(tmpPath, path, MIN(PATH_MAX, (int)strlen(path)+1));
+	tmpPath[PATH_MAX] = '\0';
+	char *last = tmpPath + strlen(tmpPath) - 1;
+	
+	// Win32 stat() fails for paths with a terminating backslash
+	// If this is a non-empty string, then zap the trailing backslash
+	
+	if (last > tmpPath)
+		{
+		if (*last == '\\')
+			*last = '\0';
+		
+		if (!stat(tmpPath, &buf))
+			return ((buf.st_mode & S_IFDIR) != 0);
+		}
+		
+	return false;
+#else
+	const char *resolvedPath;
+	resolvedPath = realpath (path, tmpPath);
+
+	if (!resolvedPath)
+		return false;
+
+	if (stat(resolvedPath, &buf))
+		return false;
+		
+	return S_ISDIR (buf.st_mode);
+#endif
+}
+
 int IO::fileStat(const char *fileName, struct stat *fileStats, int *errnum)
 {
 	struct stat stats;

=== modified file 'storage/falcon/IOx.h'
--- a/storage/falcon/IOx.h	2008-08-14 11:24:18 +0000
+++ b/storage/falcon/IOx.h	2008-08-29 20:41:13 +0000
@@ -55,6 +55,7 @@ public:
 	int		read(int length, UCHAR *buffer);
 	void	write(uint32 length, const UCHAR *data);
 	static bool	doesFileExist(const char *fileName);
+	static bool isDirectory(const char *path);
 	static int	fileStat(const char *fileName, struct stat *stats = NULL, int *errnum =
NULL);
 	void	declareFatalError();
 	void	seek (int pageNumber);

=== modified file 'storage/falcon/ha_falcon.cpp'
--- a/storage/falcon/ha_falcon.cpp	2008-08-27 12:55:46 +0000
+++ b/storage/falcon/ha_falcon.cpp	2008-08-29 20:41:13 +0000
@@ -692,7 +692,7 @@ void StorageInterface::getDemographics(v
 			{
 			ha_rows rows = 1 << indexDesc->numberSegments;
 
-			for (uint segment = 0; segment < indexDesc->numberSegments
/*key->key_parts*/; ++segment, rows >>= 1)
+			for (uint segment = 0; segment < (uint)indexDesc->numberSegments
/*key->key_parts*/; ++segment, rows >>= 1)
 				{
 				ha_rows recordsPerSegment = (ha_rows)indexDesc->segmentRecordCounts[segment];
 				key->rec_per_key[segment] = (ulong) MAX(recordsPerSegment, rows);