#include "linux/linkage.h"
#include "linux/slab.h"
#include "linux/shm.h"
+#include "linux/utsname.h"
+#include "linux/personality.h"
#include "asm/uaccess.h"
#define __FRAME_OFFSETS
#include "asm/ptrace.h"
#include "asm/unistd.h"
#include "asm/prctl.h" /* XXX This should get the constants from libc */
#include "choose-mode.h"
+#include "kern.h"
-asmlinkage long wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg)
+asmlinkage long sys_uname64(struct new_utsname __user * name)
{
- unsigned long raddr;
-
- return do_shmat(shmid, shmaddr, shmflg, &raddr) ?: (long) raddr;
+ int err;
+ down_read(&uts_sem);
+ err = copy_to_user(name, &system_utsname, sizeof (*name));
+ up_read(&uts_sem);
+ if (personality(current->personality) == PER_LINUX32)
+ err |= copy_to_user(&name->machine, "i686", 5);
+ return err ? -EFAULT : 0;
}
#ifdef CONFIG_MODE_TT
/* XXX This should check VERIFY_WRITE depending on func, check this
* in i386 as well.
*/
- if(verify_area(VERIFY_READ, ptr, bytecount))
- return(-EFAULT);
+ if (!access_ok(VERIFY_READ, ptr, bytecount))
+ return -EFAULT;
return(modify_ldt(func, ptr, bytecount));
}
#endif
#ifdef CONFIG_MODE_SKAS
-extern int userspace_pid;
+extern int userspace_pid[];
-#ifndef __NR_mm_indirect
-#define __NR_mm_indirect 241
-#endif
+#include "skas_ptrace.h"
long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount)
{
- unsigned long args[6];
+ struct ptrace_ldt ldt;
void *buf;
int res, n;
goto out;
}
- args[0] = func;
- args[1] = (unsigned long) buf;
- args[2] = bytecount;
- res = syscall(__NR_mm_indirect, ¤t->mm->context.u,
- __NR_modify_ldt, args);
-
+ ldt = ((struct ptrace_ldt) { .func = func,
+ .ptr = buf,
+ .bytecount = bytecount });
+#warning Need to look up userspace_pid by cpu
+ res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt);
if(res < 0)
goto out;
#ifdef CONFIG_MODE_SKAS
+/* XXX: Must also call arch_prctl in the host, beside saving the segment bases! */
static long arch_prctl_skas(int code, unsigned long addr)
{
long ret = 0;
switch(code){
- case ARCH_SET_GS:
- current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
- break;
case ARCH_SET_FS:
current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr;
break;
+ case ARCH_SET_GS:
+ current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
+ break;
case ARCH_GET_FS:
- ret = put_user(current->thread.regs.regs.skas.regs[GS / sizeof(unsigned long)], &addr);
+ ret = put_user(current->thread.regs.regs.skas.
+ regs[FS_BASE / sizeof(unsigned long)],
+ (unsigned long __user *)addr);
break;
case ARCH_GET_GS:
- ret = put_user(current->thread.regs.regs.skas.regs[FS / sizeof(unsigned \
-long)], &addr);
+ ret = put_user(current->thread.regs.regs.skas.
+ regs[GS_BASE / sizeof(unsigned long)],
+ (unsigned long __user *)addr);
break;
default:
ret = -EINVAL;