Commit | Line | Data |
---|---|---|
1d3468a6 | 1 | /* |
1da177e4 LT |
2 | * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) |
3 | * Licensed under the GPL | |
4 | */ | |
5 | ||
6 | #include "linux/slab.h" | |
7 | #include "linux/smp_lock.h" | |
8 | #include "linux/ptrace.h" | |
9 | #include "asm/ptrace.h" | |
10 | #include "asm/pgtable.h" | |
11 | #include "asm/tlbflush.h" | |
12 | #include "asm/uaccess.h" | |
13 | #include "user_util.h" | |
14 | #include "kern_util.h" | |
15 | #include "mem_user.h" | |
16 | #include "kern.h" | |
17 | #include "irq_user.h" | |
18 | #include "tlb.h" | |
1da177e4 | 19 | #include "os.h" |
1da177e4 LT |
20 | #include "choose-mode.h" |
21 | #include "mode_kern.h" | |
22 | ||
23 | void flush_thread(void) | |
24 | { | |
aa6758d4 | 25 | arch_flush_thread(¤t->thread.arch); |
1da177e4 LT |
26 | CHOOSE_MODE(flush_thread_tt(), flush_thread_skas()); |
27 | } | |
28 | ||
29 | void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp) | |
30 | { | |
31 | CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp); | |
32 | } | |
33 | ||
1d3468a6 JD |
34 | #ifdef CONFIG_TTY_LOG |
35 | extern void log_exec(char **argv, void *tty); | |
36 | #endif | |
37 | ||
1da177e4 | 38 | static long execve1(char *file, char __user * __user *argv, |
42947cb9 | 39 | char __user *__user *env) |
1da177e4 LT |
40 | { |
41 | long error; | |
24ec839c | 42 | struct tty_struct *tty; |
1da177e4 LT |
43 | |
44 | #ifdef CONFIG_TTY_LOG | |
b1fc0b1f | 45 | mutex_lock(&tty_mutex); |
24ec839c PZ |
46 | tty = get_current_tty(); |
47 | if (tty) | |
48 | log_exec(argv, tty); | |
b1fc0b1f | 49 | mutex_unlock(&tty_mutex); |
1da177e4 LT |
50 | #endif |
51 | error = do_execve(file, argv, env, ¤t->thread.regs); | |
52 | if (error == 0){ | |
53 | task_lock(current); | |
54 | current->ptrace &= ~PT_DTRACE; | |
1d3468a6 JD |
55 | #ifdef SUBARCH_EXECVE1 |
56 | SUBARCH_EXECVE1(¤t->thread.regs.regs); | |
57 | #endif | |
1da177e4 LT |
58 | task_unlock(current); |
59 | set_cmdline(current_cmd()); | |
60 | } | |
61 | return(error); | |
62 | } | |
63 | ||
64 | long um_execve(char *file, char __user *__user *argv, char __user *__user *env) | |
65 | { | |
66 | long err; | |
67 | ||
68 | err = execve1(file, argv, env); | |
69 | if(!err) | |
70 | do_longjmp(current->thread.exec_buf, 1); | |
71 | return(err); | |
72 | } | |
73 | ||
4d338e1a | 74 | long sys_execve(char __user *file, char __user *__user *argv, |
1da177e4 LT |
75 | char __user *__user *env) |
76 | { | |
77 | long error; | |
78 | char *filename; | |
79 | ||
80 | lock_kernel(); | |
4d338e1a | 81 | filename = getname(file); |
1da177e4 LT |
82 | error = PTR_ERR(filename); |
83 | if (IS_ERR(filename)) goto out; | |
84 | error = execve1(filename, argv, env); | |
85 | putname(filename); | |
86 | out: | |
87 | unlock_kernel(); | |
88 | return(error); | |
89 | } |