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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/kernel/exec_kern.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/um/kernel/exec_kern.c')
-rw-r--r--arch/um/kernel/exec_kern.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/arch/um/kernel/exec_kern.c b/arch/um/kernel/exec_kern.c
new file mode 100644
index 000000000000..49ddabe69be7
--- /dev/null
+++ b/arch/um/kernel/exec_kern.c
@@ -0,0 +1,91 @@
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"
19#include "2_5compat.h"
20#include "os.h"
21#include "time_user.h"
22#include "choose-mode.h"
23#include "mode_kern.h"
24
25void flush_thread(void)
26{
27 CHOOSE_MODE(flush_thread_tt(), flush_thread_skas());
28}
29
30void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
31{
32 CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp);
33}
34
35extern void log_exec(char **argv, void *tty);
36
37static long execve1(char *file, char __user * __user *argv,
38 char *__user __user *env)
39{
40 long error;
41
42#ifdef CONFIG_TTY_LOG
43 log_exec(argv, current->tty);
44#endif
45 error = do_execve(file, argv, env, &current->thread.regs);
46 if (error == 0){
47 task_lock(current);
48 current->ptrace &= ~PT_DTRACE;
49 task_unlock(current);
50 set_cmdline(current_cmd());
51 }
52 return(error);
53}
54
55long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
56{
57 long err;
58
59 err = execve1(file, argv, env);
60 if(!err)
61 do_longjmp(current->thread.exec_buf, 1);
62 return(err);
63}
64
65long sys_execve(char *file, char __user *__user *argv,
66 char __user *__user *env)
67{
68 long error;
69 char *filename;
70
71 lock_kernel();
72 filename = getname((char __user *) file);
73 error = PTR_ERR(filename);
74 if (IS_ERR(filename)) goto out;
75 error = execve1(filename, argv, env);
76 putname(filename);
77 out:
78 unlock_kernel();
79 return(error);
80}
81
82/*
83 * Overrides for Emacs so that we follow Linus's tabbing style.
84 * Emacs will notice this stuff at the end of the file and automatically
85 * adjust the settings for this buffer only. This must remain at the end
86 * of the file.
87 * ---------------------------------------------------------------------------
88 * Local variables:
89 * c-file-style: "linux"
90 * End:
91 */