42fda66387
This patchset throws out tt mode, which has been non-functional for a while. This is done in phases, interspersed with code cleanups on the affected files. The removal is done as follows: remove all code, config options, and files which depend on CONFIG_MODE_TT get rid of the CHOOSE_MODE macro, which decided whether to call tt-mode or skas-mode code, and replace invocations with their skas portions replace all now-trivial procedures with their skas equivalents There are now a bunch of now-redundant pieces of data structures, including mode-specific pieces of the thread structure, pt_regs, and mm_context. These are all replaced with their skas-specific contents. As part of the ongoing style compliance project, I made a style pass over all files that were changed. There are three such patches, one for each phase, covering the files affected by that phase but no later ones. I noticed that we weren't freeing the LDT state associated with a process when it exited, so that's fixed in one of the later patches. The last patch is a tidying patch which I've had for a while, but which caused inexplicable crashes under tt mode. Since that is no longer a problem, this can now go in. This patch: Start getting rid of tt mode support. This patch throws out CONFIG_MODE_TT and all config options, code, and files which depend on it. CONFIG_MODE_SKAS is gone and everything that depends on it is included unconditionally. The few changed lines are in re-written Kconfig help, lines which needed something skas-related removed from them, and a few more which weren't strictly deletions. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include "linux/slab.h"
|
|
#include "linux/smp_lock.h"
|
|
#include "linux/ptrace.h"
|
|
#include "linux/fs.h"
|
|
#include "asm/ptrace.h"
|
|
#include "asm/pgtable.h"
|
|
#include "asm/tlbflush.h"
|
|
#include "asm/uaccess.h"
|
|
#include "kern_util.h"
|
|
#include "as-layout.h"
|
|
#include "mem_user.h"
|
|
#include "kern.h"
|
|
#include "irq_user.h"
|
|
#include "tlb.h"
|
|
#include "os.h"
|
|
#include "choose-mode.h"
|
|
#include "mode_kern.h"
|
|
|
|
void flush_thread(void)
|
|
{
|
|
arch_flush_thread(¤t->thread.arch);
|
|
CHOOSE_MODE(flush_thread_tt(), flush_thread_skas());
|
|
}
|
|
|
|
void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
|
|
{
|
|
CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp);
|
|
}
|
|
|
|
#ifdef CONFIG_TTY_LOG
|
|
extern void log_exec(char **argv, void *tty);
|
|
#endif
|
|
|
|
static long execve1(char *file, char __user * __user *argv,
|
|
char __user *__user *env)
|
|
{
|
|
long error;
|
|
#ifdef CONFIG_TTY_LOG
|
|
struct tty_struct *tty;
|
|
|
|
mutex_lock(&tty_mutex);
|
|
tty = get_current_tty();
|
|
if (tty)
|
|
log_exec(argv, tty);
|
|
mutex_unlock(&tty_mutex);
|
|
#endif
|
|
error = do_execve(file, argv, env, ¤t->thread.regs);
|
|
if (error == 0){
|
|
task_lock(current);
|
|
current->ptrace &= ~PT_DTRACE;
|
|
#ifdef SUBARCH_EXECVE1
|
|
SUBARCH_EXECVE1(¤t->thread.regs.regs);
|
|
#endif
|
|
task_unlock(current);
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
|
|
{
|
|
long err;
|
|
|
|
err = execve1(file, argv, env);
|
|
if(!err)
|
|
do_longjmp(current->thread.exec_buf, 1);
|
|
return(err);
|
|
}
|
|
|
|
long sys_execve(char __user *file, char __user *__user *argv,
|
|
char __user *__user *env)
|
|
{
|
|
long error;
|
|
char *filename;
|
|
|
|
lock_kernel();
|
|
filename = getname(file);
|
|
error = PTR_ERR(filename);
|
|
if (IS_ERR(filename)) goto out;
|
|
error = execve1(filename, argv, env);
|
|
putname(filename);
|
|
out:
|
|
unlock_kernel();
|
|
return(error);
|
|
}
|