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[tpg/acess2.git] / Kernel / vfs / acls.c

diff --git a/Kernel/vfs/acls.c b/Kernel/vfs/acls.c
deleted file mode 100644 (file)
index ab88b98..0000000
--- a/Kernel/vfs/acls.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/* 
- * Acess Micro VFS
- */
-#include <acess.h>
-#include "vfs.h"
-#include "vfs_int.h"
-
-// === GLOBALS ===
-tVFS_ACL       gVFS_ACL_EveryoneRWX = { {1,-1}, {0,VFS_PERM_ALL} };
-tVFS_ACL       gVFS_ACL_EveryoneRW = { {1,-1}, {0,VFS_PERM_ALL^VFS_PERM_EXECUTE} };
-tVFS_ACL       gVFS_ACL_EveryoneRX = { {1,-1}, {0,VFS_PERM_READ|VFS_PERM_EXECUTE} };
-tVFS_ACL       gVFS_ACL_EveryoneRO = { {1,-1}, {0,VFS_PERM_READ} };
-
-// === CODE ===
-/**
- * \fn int VFS_CheckACL(tVFS_Node *Node, Uint Permissions)
- * \brief Checks the permissions on a file
- */
-int VFS_CheckACL(tVFS_Node *Node, Uint Permissions)
-{
-        int    i;
-        int    uid = Threads_GetUID();
-        int    gid = Threads_GetGID();
-       
-       // Root can do anything
-       if(uid == 0)    return 1;
-       
-       // Root only file?, fast return
-       if( Node->NumACLs == 0 ) {
-               Log("VFS_CheckACL - %p inaccesable, NumACLs = 0, uid=%i", Node, uid);
-               return 0;
-       }
-       
-       // Check Deny Permissions
-       for(i=0;i<Node->NumACLs;i++)
-       {
-               if(!Node->ACLs[i].Inv)  continue;       // Ignore ALLOWs
-               if(Node->ACLs[i].ID != 0x7FFFFFFF)
-               {
-                       if(!Node->ACLs[i].Group && Node->ACLs[i].ID != uid)     continue;
-                       if(Node->ACLs[i].Group && Node->ACLs[i].ID != gid)      continue;
-               }
-               
-               //Log("Deny %x", Node->ACLs[i].Perms);
-               
-               if(Node->ACLs[i].Perms & Permissions) {
-                       Log("VFS_CheckACL - %p inaccesable, %x denied",
-                               Node, Node->ACLs[i].Perms & Permissions);
-                       return 0;
-               }
-       }
-       
-       // Check for allow permissions
-       for(i=0;i<Node->NumACLs;i++)
-       {
-               if(Node->ACLs[i].Inv)   continue;       // Ignore DENYs
-               if(Node->ACLs[i].ID != 0x7FFFFFFF)
-               {
-                       if(!Node->ACLs[i].Group && Node->ACLs[i].ID != uid)     continue;
-                       if(Node->ACLs[i].Group && Node->ACLs[i].ID != gid)      continue;
-               }
-               
-               //Log("Allow %x", Node->ACLs[i].Perms);
-               
-               if((Node->ACLs[i].Perms & Permissions) == Permissions)  return 1;
-       }
-       
-       Log("VFS_CheckACL - %p inaccesable, %x not allowed", Node, Permissions);
-       return 0;
-}
-/**
- * \fn int VFS_GetACL(int FD, tVFS_ACL *Dest)
- */
-int VFS_GetACL(int FD, tVFS_ACL *Dest)
-{
-        int    i;
-       tVFS_Handle     *h = VFS_GetHandle(FD);
-       
-       // Error check
-       if(!h) {
-               return -1;
-       }
-       
-       // Root can do anything
-       if(Dest->Group == 0 && Dest->ID == 0) {
-               Dest->Inv = 0;
-               Dest->Perms = -1;
-               return 1;
-       }
-       
-       // Root only file?, fast return
-       if( h->Node->NumACLs == 0 ) {
-               Dest->Inv = 0;
-               Dest->Perms = 0;
-               return 0;
-       }
-       
-       // Check Deny Permissions
-       for(i=0;i<h->Node->NumACLs;i++)
-       {
-               if(h->Node->ACLs[i].Group != Dest->Group)       continue;
-               if(h->Node->ACLs[i].ID != Dest->ID)     continue;
-               
-               Dest->Inv = h->Node->ACLs[i].Inv;
-               Dest->Perms = h->Node->ACLs[i].Perms;
-               return 1;
-       }
-       
-       
-       Dest->Inv = 0;
-       Dest->Perms = 0;
-       return 0;
-}
-
-/**
- * \fn tVFS_ACL *VFS_UnixToAcessACL(Uint Mode, Uint Owner, Uint Group)
- * \brief Converts UNIX permissions to three Acess ACL entries
- */
-tVFS_ACL *VFS_UnixToAcessACL(Uint Mode, Uint Owner, Uint Group)
-{
-       tVFS_ACL        *ret = malloc(sizeof(tVFS_ACL)*3);
-       
-       // Error Check
-       if(!ret)        return NULL;
-       
-       // Owner
-       ret[0].Group = 0;       ret[0].ID = Owner;
-       ret[0].Inv = 0;         ret[0].Perms = 0;
-       if(Mode & 0400) ret[0].Perms |= VFS_PERM_READ;
-       if(Mode & 0200) ret[0].Perms |= VFS_PERM_WRITE;
-       if(Mode & 0100) ret[0].Perms |= VFS_PERM_EXECUTE;
-       
-       // Group
-       ret[1].Group = 1;       ret[1].ID = Group;
-       ret[1].Inv = 0;         ret[1].Perms = 0;
-       if(Mode & 0040) ret[1].Perms |= VFS_PERM_READ;
-       if(Mode & 0020) ret[1].Perms |= VFS_PERM_WRITE;
-       if(Mode & 0010) ret[1].Perms |= VFS_PERM_EXECUTE;
-       
-       // Global
-       ret[2].Group = 1;       ret[2].ID = -1;
-       ret[2].Inv = 0;         ret[2].Perms = 0;
-       if(Mode & 0004) ret[2].Perms |= VFS_PERM_READ;
-       if(Mode & 0002) ret[2].Perms |= VFS_PERM_WRITE;
-       if(Mode & 0001) ret[2].Perms |= VFS_PERM_EXECUTE;
-       
-       // Return buffer
-       return ret;
-}
-
-// === EXPORTS ===
-// --- Variables ---
-EXPORTV(gVFS_ACL_EveryoneRWX);
-EXPORTV(gVFS_ACL_EveryoneRW);
-EXPORTV(gVFS_ACL_EveryoneRX);
-// --- Functions ---
-EXPORT(VFS_UnixToAcessACL);