static char * _zuluCryptResolveDevRoot( void )
{
const char * e ;
char * dev ;
string_t st = StringGetFromVirtualFile( "/proc/cmdline" ) ;
stringList_t stl = StringListStringSplit( st,' ' ) ;
StringDelete( &st ) ;
st = StringListHasSequence_1( stl,"root=/dev/" ) ;
if( st != StringVoid ){
e = StringContent( st ) + 5 ;
dev = zuluCryptResolvePath( e ) ;
}else{
st = StringListHasSequence_1( stl,"root=UUID=" ) ;
if( st != StringVoid ){
/*
* zuluCryptDeviceFromUUID() is defined in ./blkid_evaluate_tag.c
*/
e = StringContent( st ) + 10 ;
dev = zuluCryptDeviceFromUUID( e ) ;
}else{
dev = NULL ;
}
}
StringListDelete( &stl ) ;
return dev ;
}
char * zuluCryptEvaluateDeviceTags( const char * tag,const char * path )
{
char * r ;
zuluCryptSecurityGainElevatedPrivileges() ;
/*
* zuluCryptDeviceFromUUID() is defined in ../lib/blkid_evaluate_tag.c
* zuluCryptDeviceFromLabel() is defined in ../lib/blkid_evaluate_tag.c
*/
if( StringsAreEqual( tag,"UUID" ) ){
r = zuluCryptDeviceFromUUID( path ) ;
}else{
r = zuluCryptDeviceFromLabel( path ) ;
}
zuluCryptSecurityDropElevatedPrivileges() ;
return r ;
}
