static string_t _root_device( const char * device,const char ** sys_device )
{
size_t e ;
ssize_t r ;
string_t st = String( device ) ;
if( StringStartsWithAtLeastOne( st,"/dev/sd","/dev/hd",NULL ) ){
/*
* this path will convert something like: "/dev/sdc12" to "/dev/sdc".
* basically,it removes digits from the end of the string to give the root device
* required by tcplay's system volume or fde volume
*/
*sys_device = StringRemoveDigits( st ) ;
}else if( StringStartsWith( st,"/dev/mmc" ) ){
/*
* device path will be something like "/dev/mmcblk0p2" and what we want to do
* is cut off the string from p to end iwth "/dev/mmcblk0"
*/
r = StringIndexOfChar( st,0,'p' ) ;
if( r != -1 ){
e = StringLength( st ) - ( size_t )r ;
*sys_device = StringRemoveRight( st,e ) ;
}else{
*sys_device = StringContent( st ) ;
}
}else{
*sys_device = StringContent( st ) ;
}
return st ;
}
static int _not_removed( stringList_t stl,StringListIterator it,StringListIterator * end )
{
string_t st = *it ;
StringListIterator e = it + 1 ;
if( StringStartsWithAtLeastOne( st,"/dev/sd","/dev/hd","/dev/mmcblk",NULL ) ){
/*
* we have a partition,lets continue
*/
if( e != *end ){
/*
* we are not at the end of the list,ie,there is atleast one more entry
*/
if( StringStartsWith_1( *e,st ) ){
/*
* *e will contain something like "/dev/sdc3"
* st will contain something like "/dev/sdc"
*
* This device is partitioned and hence we remove the "/dev/sdc" entry
* from the list since we dont care about it.
*/
StringListRemoveAt_1( stl,it,end ) ;
return 0 ;
}
}
}
return 1 ;
}
static int _zuluCryptCheckSYSifDeviceIsSystem( const char * device )
{
/*
* UDEV_SUPPORT is set at configure time by "-DUDEVSUPPORT=true" option,the option being absent equals "-DUDEVSUPPORT=false"
* To set the option, configure with "-DUDEVSUPPORT=true"
*/
#if UDEV_SUPPORT
/*
* udev support is enabled
*/
int r ;
size_t e ;
ssize_t k ;
string_t xt ;
string_t st ;
char dev[ PATH_MAX + 1 ] ;
const char * path ;
if( StringPrefixNotEqual( device,"/dev/" ) ){
/*
* udev doesnt work with path to image files so return early
*/
return 0 ;
}
if( StringPrefixEqual( device,"/dev/loop" ) ){
/*
* udev thinks all loop devices are system devices and we disagree and hence we return early
*/
return 0 ;
}
path = realpath( device,dev ) ;
if( path != NULL ){
st = String( path ) ;
}else{
st = String( device ) ;
}
if( StringStartsWithAtLeastOne( st,"/dev/sd","/dev/hd",NULL ) ){
/*
* this path will convert something like: "/dev/sdc12" to "/dev/sdc"
*/
StringRemoveDigits( st ) ;
}else if( StringStartsWith( st,"/dev/mmc" ) ){
/*
* device path will be something like "/dev/mmcblk0p2" and what we want to do
* is cut off the string from p to end iwth "/dev/mmcblk0"
*/
k = StringIndexOfChar( st,0,'p' ) ;
if( k != -1 ){
e = StringLength( st ) - ( size_t )k ;
StringRemoveRight( st,e ) ;
}
}
StringReplaceString( st,"/dev/","/sys/block/" ) ;
path = StringAppend( st,"/removable" ) ;
/*
* path will be something like "/sys/block/sda/removable"
*/
xt = StringGetFromVirtualFile( path ) ;
StringDelete( &st ) ;
if( xt == StringVoid ){
return 0 ;
}else{
r = StringEqual( xt,"0\n" ) ;
StringDelete( &xt ) ;
return r ;
}
#else
if( device ){;}
/*
* udev support is disabled
*/
return 0 ;
#endif
}
