/*
* An assumption is made here that the path is an LVM path if "path"
* is in /dev/mapper/abc-def format and there exist a path at /dev/abc/def.
*
* Info in lvm path structures can be found here:
* https://www.redhat.com/archives/linux-lvm/2014-January/msg00014.html
*/
string_t zuluCryptConvertIfPathIsLVM( const char * path )
{
const char * e ;
const char ** z ;
struct stat st ;
StringIterator a ;
StringIterator b ;
StringIterator c ;
StringIterator d ;
string_t q = String( path ) ;
StringGetIterators( q,&c,&d ) ;
for( c = c + 3 ; c < d ; c++ ){
a = c - 2 ;
b = c - 1 ;
if( *a != '-' && *b == '-' && *c != '-' ){
/*
* found a place with a single dash,replace the dash with a slash
*/
*b = '/' ;
/*
* replace double dashes if present.
*/
z = StringPointer( q ) ;
while( StringHasComponent( *z,"--" ) ){
StringReplaceString( q,"--","-" ) ;
}
e = StringReplaceString( q,"/dev/mapper/","/dev/" ) ;
if( stat( e,&st ) == 0 ){
/*
* The path appear to be an LVM path since
* "/dev/mapper/ABC-DEF" input path has a corresponding
* "/dev/ABC/DEF" path
*/
}else{
/*
* Not an LVM volume,replace the string to its original
*/
StringReplace( q,path ) ;
}
break ;
}
}
return q ;
}
static const char * _remove_duplicates( string_t st )
{
const char ** z = StringPointer( st ) ;
while( StringHasComponent( *z,",," ) ){
StringReplaceString( st,",,","," ) ;
}
if( StringEndsWithChar( st,',' ) ){
return StringRemoveRight( st,1 ) ;
}else{
return StringContent( st ) ;
}
}
