*/
#define DEBUG 0
-#include <common.h>
+#include <acess.h>
#include <syscalls.h>
#include <proc.h>
#include <errno.h>
-#define CHECK_NUM_NULLOK(v,size) do {\
- if((v)&&!Syscall_Valid((size),(Uint)(v))){ret=-1;err=-EINVAL;break;}\
- }while(0)
-#define CHECK_STR_NULLOK(v) do {\
- if((v)&&!Syscall_ValidString((Uint)(v))){ret=-1;err=-EINVAL;break;}\
- }while(0)
-#define CHECK_NUM_NONULL(v,size) do {\
- if(!(v)||!Syscall_Valid((size),(Uint)(v))){ret=-1;err=-EINVAL;break;}\
- }while(0)
-#define CHECK_STR_NONULL(v) do {\
- if(!(v)||!Syscall_ValidString((Uint)(v))){ret=-1;err=-EINVAL;break;}\
- }while(0)
+#define CHECK_NUM_NULLOK(v,size) \
+ if((v)&&!Syscall_Valid((size),(Uint)(v))){ret=-1;err=-EINVAL;break;}
+#define CHECK_STR_NULLOK(v) \
+ if((v)&&!Syscall_ValidString((Uint)(v))){ret=-1;err=-EINVAL;break;}
+#define CHECK_NUM_NONULL(v,size) \
+ if(!(v)||!Syscall_Valid((size),(Uint)(v))){ret=-1;err=-EINVAL;break;}
+#define CHECK_STR_NONULL(v) \
+ if(!(v)||!Syscall_ValidString((Uint)(v))){ret=-1;err=-EINVAL;break;}
// === IMPORTS ===
extern int Proc_Clone(Uint *Err, Uint Flags);
extern int Proc_GetMessage(Uint *Err, Uint *Source, void *Buffer);
extern int Proc_Execve(char *File, char **ArgV, char **EnvP);
extern Uint Binary_Load(char *file, Uint *entryPoint);
-extern int VFS_FInfo(int FD, void *Dest, int MaxACLs);
-extern int VFS_GetACL(int FD, void *Dest);
-extern int VFS_ChDir(char *Dest);
extern int Threads_SetName(char *NewName);
-extern int Threads_GetPID();
-extern int Threads_GetTID();
-extern int Threads_GetUID();
-extern int Threads_GetGID();
+extern int Threads_SetUID(Uint *errno, tUID ID);
+extern int Threads_SetGID(Uint *errno, tGID ID);
+extern int Threads_SetFaultHandler(Uint Handler);
// === PROTOTYPES ===
int Syscall_ValidString(Uint Addr);
void SyscallHandler(tSyscallRegs *Regs)
{
Uint64 ret = 0;
- Uint err = 0;
- #if DEBUG
- ENTER("iThread iNum", Threads_GetTID(), Regs->Num);
- if(Regs->Num < NUM_SYSCALLS)
- LOG("Syscall %s", cSYSCALL_NAMES[Regs->Num]);
- LOG("Arg1: 0x%x, Arg2: 0x%x, Arg3: 0x%x", Regs->Arg1, Regs->Arg2, Regs->Arg3);
+ Uint err = -EOK;
+ int callNum = Regs->Num;
+
+ #if DEBUG < 2
+ if(callNum != SYS_READ && callNum != SYS_WRITE) {
+ #endif
+ ENTER("iThread iNum", Threads_GetTID(), callNum);
+ if(callNum < NUM_SYSCALLS)
+ LOG("Syscall %s", cSYSCALL_NAMES[callNum]);
+ LOG("Arg1: 0x%x, Arg2: 0x%x, Arg3: 0x%x, Arg4: 0x%x", Regs->Arg1, Regs->Arg2, Regs->Arg3, Regs->Arg4);
+ #if DEBUG < 2
+ }
#endif
switch(Regs->Num)
// -- Yield current timeslice
case SYS_YIELD: Threads_Yield(); break;
+ // -- Set Error Handler
+ case SYS_SETFAULTHANDLER:
+ Threads_SetFaultHandler(Regs->Arg1);
+ break;
+
// -- Clone the current thread
case SYS_CLONE:
// Call clone system call
case SYS_GETGID: ret = Threads_GetGID(); break;
// -- Set User/Group IDs
- case SYS_SETUID: Log("Setting User ID to %i", Regs->Arg1); break;
- case SYS_SETGID: Log("Setting Group ID to %i", Regs->Arg1); break;
+ case SYS_SETUID: ret = Threads_SetUID(&err, Regs->Arg1); break;
+ case SYS_SETGID: ret = Threads_SetGID(&err, Regs->Arg1); break;
// -- Send Message
case SYS_SENDMSG:
// -- Check for messages
case SYS_GETMSG:
CHECK_NUM_NULLOK(Regs->Arg1, sizeof(Uint));
- //NOTE: Uncertain due to length being unknown
- // (Proc_GetMessage should check itself)
- CHECK_NUM_NULLOK(Regs->Arg2, sizeof(Uint)*4);
+ if( Regs->Arg2 && Regs->Arg2 != -1 && !MM_IsUser(Regs->Arg2) ) {
+ err = -EINVAL; ret = -1; break;
+ }
// *Source, *Data
ret = Proc_GetMessage(&err, (Uint*)Regs->Arg1, (void*)Regs->Arg2);
break;
+ // -- Get the current timestamp
+ case SYS_GETTIME:
+ ret = now();
+ break;
+
// -- Set the thread's name
case SYS_SETNAME:
CHECK_STR_NONULL(Regs->Arg1);
// ---
// Binary Control
// ---
+ // -- Replace the current process with another
case SYS_EXECVE:
CHECK_STR_NONULL(Regs->Arg1);
+ // Check the argument arrays
{
int i;
char **tmp = (char**)Regs->Arg2;
// Check ArgV (traverse array checking all string pointers)
CHECK_NUM_NONULL( tmp, sizeof(char**) );
+ //Log("tmp = %p", tmp);
for(i=0;tmp[i];i++) {
- CHECK_NUM_NULLOK( &tmp[i], sizeof(char*) );
+ CHECK_NUM_NONULL( &tmp[i], sizeof(char*) );
CHECK_STR_NONULL( tmp[i] );
}
// Check EnvP also
if( Regs->Arg3 )
{
tmp = (char**)Regs->Arg3;
+ //Log("tmp = %p", tmp);
for(i=0;tmp[i];i++) {
CHECK_NUM_NULLOK( &tmp[i], sizeof(char*) );
CHECK_STR_NONULL( tmp[i] );
}
}
}
+ LEAVE('s', "Assuming 0");
// Path, **Argv, **Envp
- ret = Proc_Execve((char*)Regs->Arg1, (char**)Regs->Arg2, (char**)Regs->Arg3);
+ ret = Proc_Execve( (char*)Regs->Arg1, (char**)Regs->Arg2, (char**)Regs->Arg3 );
break;
+ // -- Load a binary into the current process
case SYS_LOADBIN:
if( !Syscall_ValidString(Regs->Arg1)
|| !Syscall_Valid(sizeof(Uint), Regs->Arg2) ) {
err = -EINVAL;
- ret = -1;
+ ret = 0;
break;
}
// Path, *Entrypoint
ret = -1;
break;
}
+ LOG("VFS_Open(\"%s\", 0x%x)", (char*)Regs->Arg1, Regs->Arg2 | VFS_OPENFLAG_USER);
ret = VFS_Open((char*)Regs->Arg1, Regs->Arg2 | VFS_OPENFLAG_USER);
break;
case SYS_CLOSE:
+ LOG("VFS_Close(%i)", Regs->Arg1);
VFS_Close( Regs->Arg1 );
break;
case SYS_SEEK:
+ #if BITS == 64
ret = VFS_Seek( Regs->Arg1, Regs->Arg2, Regs->Arg3 );
+ #else
+ ret = VFS_Seek( Regs->Arg1, Regs->Arg2|(((Uint64)Regs->Arg3)<<32), Regs->Arg4 );
+ #endif
break;
case SYS_TELL:
break;
case SYS_FINFO:
- CHECK_NUM_NONULL( Regs->Arg2, sizeof(struct s_sysFInfo) + Regs->Arg3*sizeof(tVFS_ACL) );
+ CHECK_NUM_NONULL( Regs->Arg2, sizeof(tFInfo) + Regs->Arg3*sizeof(tVFS_ACL) );
// FP, Dest, MaxACLs
ret = VFS_FInfo( Regs->Arg1, (void*)Regs->Arg2, Regs->Arg3 );
break;
ret = VFS_ReadDir( Regs->Arg1, (void*)Regs->Arg2 );
break;
+ // Open a file that is a entry in an open directory
+ case SYS_OPENCHILD:
+ if( !Syscall_ValidString(Regs->Arg2) ) {
+ err = -EINVAL;
+ ret = -1;
+ break;
+ }
+ ret = VFS_OpenChild( &err, Regs->Arg1, (char*)Regs->Arg2, Regs->Arg3);
+ break;
+
// Change Directory
case SYS_CHDIR:
if( !Syscall_ValidString(Regs->Arg1) ) {
break;
// -- Debug
- #if DEBUG_BUILD
+ //#if DEBUG_BUILD
case SYS_DEBUG:
Log((char*)Regs->Arg1,
Regs->Arg2, Regs->Arg3, Regs->Arg4, Regs->Arg5, Regs->Arg6);
break;
- #endif
+ //#endif
// -- Default (Return Error)
default:
ret = -1;
break;
}
+
+ if(err != 0) {
+ LOG("ID: %i, Return errno = %i", Regs->Num, err);
+ }
+
#if BITS < 64
Regs->Return = ret&0xFFFFFFFF;
Regs->RetHi = ret >> 32;
#endif
Regs->Error = err;
#if DEBUG
+ # if DEBUG < 2
+ if( callNum != SYS_READ && callNum != SYS_WRITE ) {
+ # endif
LOG("err = %i", err);
- LEAVE('x', ret);
+ if(Regs->Num != SYS_EXECVE)
+ LEAVE('x', ret);
+ else
+ LOG("Actual %i", ret);
+ # if DEBUG < 2
+ }
+ # endif
#endif
}
git.ucc.asn.au / tpg / acess2.git / blobdiff
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