return err ? -EFAULT : 0;
}
-#ifdef CONFIG_MODE_TT
-extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
-
-long sys_modify_ldt_tt(int func, void *ptr, unsigned long bytecount)
-{
- /* XXX This should check VERIFY_WRITE depending on func, check this
- * in i386 as well.
- */
- if (!access_ok(VERIFY_READ, ptr, bytecount))
- return -EFAULT;
- return(modify_ldt(func, ptr, bytecount));
-}
-#endif
-
-#ifdef CONFIG_MODE_SKAS
-extern int userspace_pid[];
-
-#include "skas_ptrace.h"
-
-long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount)
-{
- struct ptrace_ldt ldt;
- void *buf;
- int res, n;
-
- buf = kmalloc(bytecount, GFP_KERNEL);
- if(buf == NULL)
- return(-ENOMEM);
-
- res = 0;
-
- switch(func){
- case 1:
- case 0x11:
- res = copy_from_user(buf, ptr, bytecount);
- break;
- }
-
- if(res != 0){
- res = -EFAULT;
- goto out;
- }
-
- 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;
-
- switch(func){
- case 0:
- case 2:
- n = res;
- res = copy_to_user(ptr, buf, n);
- if(res != 0)
- res = -EFAULT;
- else
- res = n;
- break;
- }
-
- out:
- kfree(buf);
- return(res);
-}
-#endif
-
-long sys_modify_ldt(int func, void *ptr, unsigned long bytecount)
-{
- return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func,
- ptr, bytecount));
-}
-
#ifdef CONFIG_MODE_TT
extern long arch_prctl(int code, unsigned long addr);
{
long ret;
- /* XXX: normal arch do here this pass, and also pass the regs to
- * do_fork, instead of NULL. Currently the arch-independent code
- * ignores these values, while the UML code (actually it's
- * copy_thread) does the right thing. But this should change,
- probably. */
- /*if (!newsp)
- newsp = UPT_SP(current->thread.regs);*/
+ if (!newsp)
+ newsp = UPT_SP(¤t->thread.regs.regs);
current->thread.forking = 1;
- ret = do_fork(clone_flags, newsp, NULL, 0, parent_tid, child_tid);
+ ret = do_fork(clone_flags, newsp, ¤t->thread.regs, 0, parent_tid,
+ child_tid);
current->thread.forking = 0;
return(ret);
}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */