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SGPath: fix creating paths with permission checker.

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Check permission of the whole path and not to individual
directories, as none of the intermediate directories need
to be writeable by IORules.
This commit is contained in:
Thomas Geymayer
2014-06-26 18:04:11 +02:00
parent 49bcf49db1
commit 5126ae5891
2 changed files with 36 additions and 30 deletions
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61
simgear/misc/sg_path.cxx
View File

@@ -477,14 +477,23 @@ bool SGPath::isFile() const
return _exists && _isFile;
}
//------------------------------------------------------------------------------
#ifdef _WIN32
# define sgMkDir(d,m) _mkdir(d)
#else
# define sgMkDir(d,m) mkdir(d,m)
#endif
int SGPath::create_dir(mode_t mode)
{
if( !canWrite() )
{
SG_LOG( SG_IO,
SG_WARN, "Error creating directory for '" << str() << "'"
" reason: access denied" );
return -3;
}
int SGPath::create_dir( mode_t mode ) {
string_list dirlist = sgPathSplit(dir());
if ( dirlist.empty() )
return -1;
@@ -501,37 +510,31 @@ int SGPath::create_dir( mode_t mode ) {
i = 2;
}
#endif
struct stat info;
int r;
for(; ( r = stat( dir.c_str(), &info ) ) == 0 && i < path_elements.size(); i++) {
dir.append(path_elements[i]);
}
if ( r == 0 ) {
return 0; // Directory already exists
}
for(;;)
struct stat info;
int r;
for(; (r = stat(dir.c_str(), &info)) == 0 && i < path_elements.size(); ++i)
dir.append(path_elements[i]);
if( r == 0 )
return 0; // Directory already exists
for(;;)
{
if( sgMkDir(dir.c_str(), mode) )
{
if( !dir.canWrite() )
{
SG_LOG( SG_IO,
SG_WARN, "Error creating directory: (" << dir.str() << ")" <<
" reason: access denied" );
return -3;
}
else if( sgMkDir(dir.c_str(), mode) )
{
SG_LOG( SG_IO,
SG_ALERT, "Error creating directory: (" << dir.str() << ")" );
return -2;
}
if( i >= path_elements.size() )
return 0;
dir.append(path_elements[i++]);
SG_LOG( SG_IO,
SG_ALERT, "Error creating directory: (" << dir.str() << ")" );
return -2;
}
else
SG_LOG(SG_IO, SG_DEBUG, "Directory created: " << dir.str());
return 0;
if( i >= path_elements.size() )
return 0;
dir.append(path_elements[i++]);
}
return 0;
}
string_list sgPathBranchSplit( const string &dirpath ) {

5
simgear/misc/sg_path.hxx
View File

@@ -206,9 +206,12 @@ public:
/**
* Create the designated directory.
*
* @param mode Permissions. See:
* http://en.wikipedia.org/wiki/File_system_permissions#Numeric_notation
* @return 0 on success, or <0 on failure.
*/
int create_dir(mode_t mode);
int create_dir(mode_t mode = 0755);
/**
* Check if reading file is allowed. Readabilty does not imply the existance