1 /*
2 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
4 */
5
6 #include "linux/kernel.h"
7 #include "linux/ptrace.h"
8 #include "kern_util.h"
9 #include "sysdep/ptrace.h"
10 #include "sysdep/syscalls.h"
11
12 extern int syscall_table_size;
13 #define NR_syscalls (syscall_table_size / sizeof(void *))
14
15 void handle_syscall(struct uml_pt_regs *r)
16 {
17 struct pt_regs *regs = container_of(r, struct pt_regs, regs);
18 long result;
19 int syscall;
20
21 syscall_trace(r, 0);
22
23 /*
24 * This should go in the declaration of syscall, but when I do that,
25 * strace -f -c bash -c 'ls ; ls' breaks, sometimes not tracing
26 * children at all, sometimes hanging when bash doesn't see the first
27 * ls exit.
28 * The assembly looks functionally the same to me. This is
29 * gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)
30 * in case it's a compiler bug.
31 */
32 syscall = UPT_SYSCALL_NR(r);
33 if ((syscall >= NR_syscalls) || (syscall < 0))
34 result = -ENOSYS;
35 else result = EXECUTE_SYSCALL(syscall, regs);
36
37 REGS_SET_SYSCALL_RETURN(r->gp, result);
38
39 syscall_trace(r, 1);
40 }
41
|
This page was automatically generated by the
LXR engine.
|