*/
#define DEBUG 0
#include <acess.h>
-#include "vfs.h"
-#include "vfs_int.h"
-#include "vfs_ext.h"
+#include <vfs.h>
+#include <vfs_int.h>
+#include <vfs_ext.h>
+#include <threads.h>
// === CONSTANTS ===
#define MAX_KERNEL_FILES 128
#define MAX_USER_FILES 64
+// === IMPORTS ===
+extern int Server_GetClientID(void);
+
// === PROTOTYPES ===
tVFS_Handle *VFS_GetHandle(int FD);
int VFS_AllocHandle(int FD, tVFS_Node *Node, int Mode);
+// === Types ===
typedef struct sUserHandles
{
struct sUserHandles *Next;
tVFS_Handle gaKernelHandles[MAX_KERNEL_FILES];
// === CODE ===
+tUserHandles *VFS_int_GetUserHandles(int PID, int bCreate)
+{
+ tUserHandles *ent, *prev = NULL;
+ for( ent = gpUserHandles; ent; prev = ent, ent = ent->Next ) {
+ if( ent->PID == PID ) {
+ //if( bCreate )
+ // Log_Warning("VFS", "Process %i already has a handle list", PID);
+ return ent;
+ }
+ if( ent->PID > PID ) break;
+ }
+
+ if(!bCreate)
+ return NULL;
+
+ ent = calloc( 1, sizeof(tUserHandles) );
+ ent->PID = PID;
+ if( prev ) {
+ ent->Next = prev->Next;
+ prev->Next = ent;
+ }
+ else {
+ ent->Next = gpUserHandles;
+ gpUserHandles = ent;
+ }
+ Log_Notice("VFS", "Created handle list for process %i", PID);
+ return ent;
+}
+
+/**
+ * \brief Clone the handle list of the current process into another
+ */
+void VFS_CloneHandleList(int PID)
+{
+ tUserHandles *ent;
+ tUserHandles *cur;
+ int i, maxhandles;
+
+ cur = VFS_int_GetUserHandles(Threads_GetPID(), 0);
+ if(!cur) return ; // Don't need to do anything if the current list is empty
+
+ ent = VFS_int_GetUserHandles(PID, 1);
+
+ maxhandles = *Threads_GetMaxFD();
+ memcpy(ent->Handles, cur->Handles, maxhandles*sizeof(tVFS_Handle));
+
+ for( i = 0; i < maxhandles; i ++ )
+ {
+ if(!cur->Handles[i].Node) continue;
+
+ if(ent->Handles[i].Node->Type->Reference)
+ ent->Handles[i].Node->Type->Reference(ent->Handles[i].Node);
+ }
+}
+
+void VFS_CloneHandlesFromList(int PID, int nFD, int FDs[])
+{
+ tUserHandles *ent;
+ tUserHandles *cur;
+ int i, maxhandles;
+
+ cur = VFS_int_GetUserHandles(Threads_GetPID(), 0);
+ if(!cur) return ; // Don't need to do anything if the current list is empty
+
+ ent = VFS_int_GetUserHandles(PID, 1);
+
+ maxhandles = *Threads_GetMaxFD();
+ if( nFD > maxhandles )
+ nFD = maxhandles;
+ for( i = 0; i < nFD; i ++ )
+ {
+ if( FDs[i] >= maxhandles ) {
+ ent->Handles[i].Node = NULL;
+ continue ;
+ }
+ memcpy(&ent->Handles[i], &cur->Handles[ FDs[i] ], sizeof(tVFS_Handle));
+ }
+ for( ; i < maxhandles; i ++ )
+ cur->Handles[i].Node = NULL;
+
+ for( i = 0; i < maxhandles; i ++ )
+ {
+ if(!cur->Handles[i].Node) continue;
+
+ if(ent->Handles[i].Node->Type->Reference)
+ ent->Handles[i].Node->Type->Reference(ent->Handles[i].Node);
+ }
+}
+
/**
* \fn tVFS_Handle *VFS_GetHandle(int FD)
* \brief Gets a pointer to the handle information structure
//Log_Debug("VFS", "VFS_GetHandle: (FD=0x%x)", FD);
- if(FD < 0) return NULL;
+ if(FD < 0) {
+ LOG("FD (%i) < 0, RETURN NULL", FD);
+ return NULL;
+ }
if(FD & VFS_KERNEL_FLAG) {
FD &= (VFS_KERNEL_FLAG - 1);
- if(FD >= MAX_KERNEL_FILES) return NULL;
+ if(FD >= MAX_KERNEL_FILES) {
+ LOG("FD (%i) > MAX_KERNEL_FILES (%i), RETURN NULL", FD, MAX_KERNEL_FILES);
+ return NULL;
+ }
h = &gaKernelHandles[ FD ];
}
- else {
+ else
+ {
tUserHandles *ent;
int pid = Threads_GetPID();
- for( ent = gpUserHandles; ent; ent = ent->Next ) {
- if( ent->PID == pid ) break;
- if( ent->PID > pid ) {
- Log_Error("VFS", "PID %i does not have a handle list", pid);
- return NULL;
- }
+ int maxhandles = *Threads_GetMaxFD();
+
+ ent = VFS_int_GetUserHandles(pid, 0);
+ if(!ent) {
+ Log_Error("VFS", "Client %i does not have a handle list (>)", pid);
+ return NULL;
+ }
+
+ if(FD >= maxhandles) {
+ LOG("FD (%i) > Limit (%i), RETURN NULL", FD, maxhandles);
+ return NULL;
}
- if(FD >= CFGINT(CFG_VFS_MAXFILES)) return NULL;
h = &ent->Handles[ FD ];
+ LOG("FD (%i) -> %p (Mode:0x%x,Node:%p)", FD, h, h->Mode, h->Node);
}
- if(h->Node == NULL) return NULL;
+ if(h->Node == NULL) {
+ LOG("FD (%i) Unused", FD);
+ return NULL;
+ }
//Log_Debug("VFS", "VFS_GetHandle: RETURN %p", h);
return h;
}
+int VFS_SetHandle(int FD, tVFS_Node *Node, int Mode)
+{
+ tVFS_Handle *h;
+ if(FD < 0) return -1;
+
+ if( FD & VFS_KERNEL_FLAG ) {
+ FD &= (VFS_KERNEL_FLAG -1);
+ if( FD >= MAX_KERNEL_FILES ) return -1;
+ h = &gaKernelHandles[FD];
+ }
+ else {
+ tUserHandles *ent;
+ int pid = Threads_GetPID();
+ int maxhandles = *Threads_GetMaxFD();
+
+ ent = VFS_int_GetUserHandles(pid, 0);
+ if(!ent) {
+ Log_Error("VFS", "Client %i does not have a handle list (>)", pid);
+ return NULL;
+ }
+
+ if(FD >= maxhandles) {
+ LOG("FD (%i) > Limit (%i), RETURN NULL", FD, maxhandles);
+ return NULL;
+ }
+ h = &ent->Handles[ FD ];
+ }
+ h->Node = Node;
+ h->Mode = Mode;
+ return FD;
+}
+
+
int VFS_AllocHandle(int bIsUser, tVFS_Node *Node, int Mode)
{
int i;
// Check for a user open
if(bIsUser)
{
- tUserHandles *ent, *prev;
- int pid = Threads_GetPID();
- for( ent = gpUserHandles; ent; prev = ent, ent = ent->Next ) {
- if( ent->PID == pid ) break;
- if( ent->PID > pid ) break;
- }
- if( ent->PID > pid ) {
- ent = calloc( 1, sizeof(tUserHandles) );
- if( prev ) {
- ent->Next = prev->Next;
- prev->Next = ent;
- }
- else {
- ent->Next = gpUserHandles;
- gpUserHandles = ent;
- }
- }
+ tUserHandles *ent;
+ int maxhandles = *Threads_GetMaxFD();
+ // Find the PID's handle list
+ ent = VFS_int_GetUserHandles(Threads_GetPID(), 1);
// Get a handle
- for(i=0;i<CFGINT(CFG_VFS_MAXFILES);i++)
+ for( i = 0; i < maxhandles; i ++ )
{
if(ent->Handles[i].Node) continue;
ent->Handles[i].Node = Node;
git.ucc.asn.au / tpg / acess2.git / blobdiff
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