]>
Commit | Line | Data |
---|---|---|
1d3468a6 | 1 | /* |
ba180fd4 | 2 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
1da177e4 LT |
3 | * Licensed under the GPL |
4 | */ | |
5 | ||
73395a00 AV |
6 | #include <linux/stddef.h> |
7 | #include <linux/module.h> | |
8 | #include <linux/fs.h> | |
9 | #include <linux/ptrace.h> | |
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <asm/current.h> | |
13 | #include <asm/processor.h> | |
14 | #include <asm/uaccess.h> | |
37185b33 AV |
15 | #include <as-layout.h> |
16 | #include <mem_user.h> | |
17 | #include <skas.h> | |
18 | #include <os.h> | |
ff64b4c1 | 19 | #include "internal.h" |
1da177e4 LT |
20 | |
21 | void flush_thread(void) | |
22 | { | |
77bf4400 | 23 | void *data = NULL; |
77bf4400 JD |
24 | int ret; |
25 | ||
aa6758d4 | 26 | arch_flush_thread(¤t->thread.arch); |
77bf4400 | 27 | |
3963333f JD |
28 | ret = unmap(¤t->mm->context.id, 0, STUB_START, 0, &data); |
29 | ret = ret || unmap(¤t->mm->context.id, STUB_END, | |
536788fe | 30 | host_task_size - STUB_END, 1, &data); |
ba180fd4 JD |
31 | if (ret) { |
32 | printk(KERN_ERR "flush_thread - clearing address space failed, " | |
77bf4400 JD |
33 | "err = %d\n", ret); |
34 | force_sig(SIGKILL, current); | |
35 | } | |
36 | ||
6c738ffa | 37 | __switch_mm(¤t->mm->context.id); |
1da177e4 LT |
38 | } |
39 | ||
40 | void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp) | |
41 | { | |
bf56d576 | 42 | get_safe_registers(regs->regs.gp, regs->regs.fp); |
77bf4400 JD |
43 | PT_REGS_IP(regs) = eip; |
44 | PT_REGS_SP(regs) = esp; | |
42459792 | 45 | current->ptrace &= ~PT_DTRACE; |
1d3468a6 | 46 | #ifdef SUBARCH_EXECVE1 |
42459792 | 47 | SUBARCH_EXECVE1(regs->regs); |
1d3468a6 | 48 | #endif |
1da177e4 | 49 | } |
42459792 | 50 | EXPORT_SYMBOL(start_thread); |
1da177e4 | 51 | |
cb1dcc0f | 52 | long um_execve(const char *file, const char __user *const __user *argv, const char __user *const __user *env) |
1da177e4 LT |
53 | { |
54 | long err; | |
55 | ||
42459792 | 56 | err = do_execve(file, argv, env, ¤t->thread.regs); |
ba180fd4 | 57 | if (!err) |
fab95c55 | 58 | UML_LONGJMP(current->thread.exec_buf, 1); |
ba180fd4 | 59 | return err; |
1da177e4 LT |
60 | } |
61 | ||
cb1dcc0f RW |
62 | long sys_execve(const char __user *file, const char __user *const __user *argv, |
63 | const char __user *const __user *env) | |
1da177e4 LT |
64 | { |
65 | long error; | |
66 | char *filename; | |
67 | ||
4d338e1a | 68 | filename = getname(file); |
1da177e4 LT |
69 | error = PTR_ERR(filename); |
70 | if (IS_ERR(filename)) goto out; | |
42459792 | 71 | error = do_execve(filename, argv, env, ¤t->thread.regs); |
1da177e4 LT |
72 | putname(filename); |
73 | out: | |
ba180fd4 | 74 | return error; |
1da177e4 | 75 | } |