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1da177e4 LT |
1 | /* |
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 | { | |
25 | CHOOSE_MODE(flush_thread_tt(), flush_thread_skas()); | |
26 | } | |
27 | ||
28 | void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp) | |
29 | { | |
30 | CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp); | |
31 | } | |
32 | ||
33 | extern void log_exec(char **argv, void *tty); | |
34 | ||
35 | static long execve1(char *file, char __user * __user *argv, | |
36 | char *__user __user *env) | |
37 | { | |
38 | long error; | |
39 | ||
40 | #ifdef CONFIG_TTY_LOG | |
41 | log_exec(argv, current->tty); | |
42 | #endif | |
43 | error = do_execve(file, argv, env, ¤t->thread.regs); | |
44 | if (error == 0){ | |
45 | task_lock(current); | |
46 | current->ptrace &= ~PT_DTRACE; | |
47 | task_unlock(current); | |
48 | set_cmdline(current_cmd()); | |
49 | } | |
50 | return(error); | |
51 | } | |
52 | ||
53 | long um_execve(char *file, char __user *__user *argv, char __user *__user *env) | |
54 | { | |
55 | long err; | |
56 | ||
57 | err = execve1(file, argv, env); | |
58 | if(!err) | |
59 | do_longjmp(current->thread.exec_buf, 1); | |
60 | return(err); | |
61 | } | |
62 | ||
63 | long sys_execve(char *file, char __user *__user *argv, | |
64 | char __user *__user *env) | |
65 | { | |
66 | long error; | |
67 | char *filename; | |
68 | ||
69 | lock_kernel(); | |
70 | filename = getname((char __user *) file); | |
71 | error = PTR_ERR(filename); | |
72 | if (IS_ERR(filename)) goto out; | |
73 | error = execve1(filename, argv, env); | |
74 | putname(filename); | |
75 | out: | |
76 | unlock_kernel(); | |
77 | return(error); | |
78 | } | |
79 | ||
80 | /* | |
81 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
82 | * Emacs will notice this stuff at the end of the file and automatically | |
83 | * adjust the settings for this buffer only. This must remain at the end | |
84 | * of the file. | |
85 | * --------------------------------------------------------------------------- | |
86 | * Local variables: | |
87 | * c-file-style: "linux" | |
88 | * End: | |
89 | */ |