static int _zuluCryptUnmountVolume_0( string_t st,char ** m_point )
{
int h ;
stringList_t stl = StringListStringSplit( st,' ' ) ;
StringListIterator it = StringListBegin( stl ) ;
/*
* zuluCryptDecodeMountEntry() is defined in mount_volume.c
*/
const char * mout_point = zuluCryptDecodeMountEntry( *( it + 1 ) ) ;
if( StringContains( *( it + 2 ),"fuse" ) ){
/*
* Dont know whats going on but FUSE based file systems do not seem to work with umount()
*/
h = _unmount( _unmount_fuse,mout_point ) ;
}else{
h = _unmount( _unmount_rest,mout_point ) ;
}
if( h == 0 && m_point != NULL ){
*m_point = StringCopy_2( mout_point ) ;
}
StringListDelete( &stl ) ;
return h ;
}
char * zuluCryptGetMountPointFromPath( const char * path )
{
string_t st = zuluCryptGetMountEntry( path ) ;
stringList_t stl ;
if( st == StringVoid ) {
return NULL ;
} else {
stl = StringListStringSplit( st,' ' ) ;
StringDelete( &st ) ;
if( stl == StringListVoid ) {
return NULL ;
} else {
st = StringListCopyStringAtSecondPlace( stl ) ;
StringListDelete( &stl ) ;
zuluCryptDecodeMountEntry( st ) ;
return StringDeleteHandle( &st ) ;
}
}
}
int zuluCryptBindUnmountVolume( stringList_t stx,const char * device,uid_t uid )
{
stringList_t stl ;
string_t xt ;
string_t st ;
string_t zt ;
ssize_t index = -1 ;
const char * f ;
const char * g ;
char * h = NULL ;
int r = 1 ;
int k ;
int delete_stx = 0 ;
/*
* zuluCryptUserIsAMemberOfAGroup() is defined in security.c
*/
/*
* root user is a member of all groups and hence is allowed
*/
int allowedUser = zuluCryptUserIsAMemberOfAGroup( uid,"zulumount" ) ;
zuluCryptSecurityGainElevatedPrivileges() ;
if( stx == StringListVoid ){
/*
* zuluCryptGetMoutedListFromMountInfo() is defined in ../lib/process_mountinfo.c
*/
stx = zuluCryptGetMoutedListFromMountInfo() ;
delete_stx = 1 ;
}
if( StringPrefixEqual( device,"/dev/loop" ) ){
/*
* zuluCryptLoopDeviceAddress_2() is defined in ../lib/create_loop_device.c
*/
st = zuluCryptLoopDeviceAddress_2( device ) ;
/*
* Add a space at the end of the device name to make sure we check the full device name to avoid possible collisions
* that may exist if one device is named "/home/abc" and another "/home/abcdef"
*/
zt = StringListHasStartSequence_1( stx,StringAppend( st," " ) ) ;
StringRemoveRight( st,1 ) ;
device = h = StringDeleteHandle( &st ) ;
}else{
/*
* Add a space at the end of the device name to make sure we check the full device name to avoid possible collisions
* that may exist if one device is named "/dev/sdc1" and another "/dev/sdc12"
*/
st = String( device ) ;
zt = StringListHasStartSequence_1( stx,StringAppend( st," " ) ) ;
StringDelete( &st ) ;
}
if( zt == StringVoid ){
/*
* The volume does not appear to be mounted
*/
r = 1 ;
}else{
stl = StringListStringSplit( zt,' ' ) ;
xt = StringListCopyStringAtSecondPlace( stl ) ;
StringListDelete( &stl ) ;
st = StringCopy( xt ) ;
/*
* zuluCryptDecodeMountEntry() is defined in ../lib/mount_volume.c
* g will contain something like "/run/media/private/$USER/sdc1"
*/
g = zuluCryptDecodeMountEntry( st ) ;
if( allowedUser ){
/*
* a privileged user is attempting to unmount a shared mount point,allow them
*/
k = 1 ;
}else{
/*
* a non privileged user is attempting to unmount a shared mount point,allow them only if
* they are the one that created it
*/
/*
* zuluCryptSecurityMountPointPrefixMatch() is defined in ./security.c
*/
k = zuluCryptMountPointPrefixMatch( g,uid,NULL ) ;
}
StringDelete( &st ) ;
if( k != 1 ){
/*
* One none privileged user is attempting to unmount a bind mount from another use,disallow it
*/
r = 4 ;
}else{
index = StringLastIndexOfChar( xt,'/' ) + 1 ;
StringRemoveLeft( xt,index ) ;
StringPrepend( xt,"/run/media/public/" ) ;
/*
* f will now contain something like "/run/media/public/sdc1"
* space character is added before checking to avoid possible collisions
* as explained in above comments
*/
f = StringAppend( xt," " ) ;
zt = StringListHasSequence_1( stx,f ) ;
f = StringRemoveRight( xt,1 ) ;
if( zt == StringVoid ){
/*
* volume is not shared
*/
}else{
/*
* volume is shared,try to unmount it
* a volume is assumed to be shared if its device path in mountinfo has two mount points,one
* in /run/media/private/$USER and the other in /run/media/public/
*/
if( StringStartsWith( zt,device ) ){
f = zuluCryptDecodeMountEntry( xt ) ;
/*
* good,the device associated with the shared mount is the same as that of the
* private mount,try to unmount it.
*/
r = 3 ;
for( k = 0 ; k < 3 ; k++ ){
/*
* try to unmount 3 times before giving up
*/
if( umount( f ) == 0 ){
rmdir( f ) ;
r = 0 ;
break ;
}else{
sleep( 1 ) ;
}
}
}else{
/*
* i dont see how we will get here,we shouldnt
*/
r = 0 ;
}
}
}
StringDelete( &xt ) ;
}
if( delete_stx ){
StringListDelete( &stx ) ;
}
StringFree( h ) ;
zuluCryptSecurityDropElevatedPrivileges() ;
return r ;
}
stringList_t zuluCryptOpenedVolumesList( uid_t uid )
{
const char * e ;
const char * c ;
const char * d ;
const char * t ;
char * f ;
char * g ;
StringListIterator it ;
StringListIterator end ;
ssize_t k ;
string_t q ;
string_t z ;
string_t j ;
stringList_t stx ;
stringList_t list = StringListVoid ;
stringList_t stl = zuluCryptGetMoutedList() ;
if( uid ) {
;
}
/*
* zuluCryptMapperPrefix() is defined in create_mapper_name.c
*/
j = String_1( zuluCryptMapperPrefix(),"/zuluCrypt-",NULL ) ;
/*
* t will probably contain "/dev/mapper/zuluCrypt-"
*/
t = StringContent( j ) ;
StringListGetIterators( stl,&it,&end ) ;
while( it != end ) {
c = StringContent( *it ) ;
it++ ;
if( StringPrefixNotEqual( c,t ) ) {
/*
* we only care about zuluCrypt volumes and these volumes that we care about starts with
* "/dev/mapper/zuluCrypt-"
*/
continue ;
}
if( StringHasComponent( c,"/run/media/public/" ) ) {
/*
* dont show mirror images due to bind mounts
*/
continue ;
}
stx = StringListSplit( c,' ' ) ;
e = StringListContentAtFirstPlace( stx ) ;
k = StringHasComponent_1( e,"-UUID-" ) ;
if( k != -1 ) {
q = StringListStringAtFirstPlace( stx ) ;
/*
* zuluCryptDecodeMountEntry() is defined in mount_volume.c
*/
d = zuluCryptDecodeMountEntry( StringListStringAtSecondPlace( stx ) ) ;
/*
* zuluCryptGetVolumeTypeFromMapperPath() is defined in status.c
*/
f = zuluCryptGetVolumeTypeFromMapperPath( StringContent( q ) ) ;
e = StringSubChar( q,StringLastIndexOfChar( q,'-' ),'\0' ) + k + 6 ;
z = String_1( "UUID=\"",e,"\"\t",d,"\t",f,NULL ) ;
list = StringListAppendString_1( list,&z ) ;
StringFree( f ) ;
} else {
/*
* zuluCryptVolumeDeviceName() is defined in status.c
*/
g = zuluCryptVolumeDeviceName( e ) ;
if( g != NULL ) {
d = zuluCryptDecodeMountEntry( StringListStringAtSecondPlace( stx ) ) ;
/*
* zuluCryptGetVolumeTypeFromMapperPath() is defined in status.c
*/
f = zuluCryptGetVolumeTypeFromMapperPath( StringListContentAtFirstPlace( stx ) ) ;
z = String_1( g,"\t",d,"\t",f,NULL ) ;
list = StringListAppendString_1( list,&z ) ;
StringFree( f ) ;
StringFree( g ) ;
}
}
StringListDelete( &stx ) ;
}
StringListDelete( &stl ) ;
StringDelete( &j ) ;
return list ;
}
