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77bf440031
This patch makes a number of simplifications enabled by the removal of
CHOOSE_MODE. There were lots of functions that looked like
int foo(args){
foo_skas(args);
}
The bodies of foo_skas are now folded into foo, and their declarations (and
sometimes entire header files) are deleted.
In addition, the union uml_pt_regs, which was a union between the tt and skas
register formats, is now a struct, with the tt-mode arm of the union being
removed.
It turns out that usr2_handler was unused, so it is gone.
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>
103 lines
2.1 KiB
C
103 lines
2.1 KiB
C
/*
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* Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#include "linux/slab.h"
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#include "linux/smp_lock.h"
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#include "linux/ptrace.h"
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#include "linux/fs.h"
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#include "asm/ptrace.h"
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#include "asm/pgtable.h"
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#include "asm/tlbflush.h"
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#include "asm/uaccess.h"
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#include "kern_util.h"
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#include "as-layout.h"
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#include "mem_user.h"
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#include "kern.h"
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#include "irq_user.h"
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#include "tlb.h"
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#include "os.h"
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#include "skas/skas.h"
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void flush_thread(void)
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{
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void *data = NULL;
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unsigned long end = proc_mm ? task_size : CONFIG_STUB_START;
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int ret;
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arch_flush_thread(¤t->thread.arch);
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ret = unmap(¤t->mm->context.skas.id, 0, end, 1, &data);
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if(ret){
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printk("flush_thread - clearing address space failed, "
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"err = %d\n", ret);
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force_sig(SIGKILL, current);
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}
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__switch_mm(¤t->mm->context.skas.id);
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}
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void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
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{
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set_fs(USER_DS);
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PT_REGS_IP(regs) = eip;
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PT_REGS_SP(regs) = esp;
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}
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#ifdef CONFIG_TTY_LOG
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extern void log_exec(char **argv, void *tty);
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#endif
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static long execve1(char *file, char __user * __user *argv,
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char __user *__user *env)
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{
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long error;
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#ifdef CONFIG_TTY_LOG
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struct tty_struct *tty;
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mutex_lock(&tty_mutex);
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tty = get_current_tty();
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if (tty)
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log_exec(argv, tty);
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mutex_unlock(&tty_mutex);
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#endif
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error = do_execve(file, argv, env, ¤t->thread.regs);
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if (error == 0){
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task_lock(current);
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current->ptrace &= ~PT_DTRACE;
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#ifdef SUBARCH_EXECVE1
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SUBARCH_EXECVE1(¤t->thread.regs.regs);
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#endif
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task_unlock(current);
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}
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return(error);
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}
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long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
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{
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long err;
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err = execve1(file, argv, env);
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if(!err)
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do_longjmp(current->thread.exec_buf, 1);
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return(err);
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}
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long sys_execve(char __user *file, char __user *__user *argv,
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char __user *__user *env)
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{
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long error;
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char *filename;
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lock_kernel();
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filename = getname(file);
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error = PTR_ERR(filename);
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if (IS_ERR(filename)) goto out;
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error = execve1(filename, argv, env);
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putname(filename);
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out:
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unlock_kernel();
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return(error);
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}
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