1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stdlib.h>
#include <errno.h>
#include <setjmp.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <asm/page.h>
#include <asm/unistd.h>
#include <asm/ptrace.h>
#include "init.h"
#include "sysdep/ptrace.h"
#include "sigcontext.h"
#include "sysdep/sigcontext.h"
#include "irq_user.h"
#include "signal_user.h"
#include "time_user.h"
#include "task.h"
#include "mode.h"
#include "choose-mode.h"
#include "kern_util.h"
#include "user_util.h"
#include "os.h"
void kill_child_dead(int pid)
{
kill(pid, SIGKILL);
kill(pid, SIGCONT);
do {
int n;
CATCH_EINTR(n = waitpid(pid, NULL, 0));
if (n > 0)
kill(pid, SIGCONT);
else
break;
} while(1);
}
void segv_handler(int sig, union uml_pt_regs *regs)
{
struct faultinfo * fi = UPT_FAULTINFO(regs);
if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){
bad_segv(*fi, UPT_IP(regs));
return;
}
segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs);
}
void usr2_handler(int sig, union uml_pt_regs *regs)
{
CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0);
}
struct signal_info sig_info[] = {
[ SIGTRAP ] { .handler = relay_signal,
.is_irq = 0 },
[ SIGFPE ] { .handler = relay_signal,
.is_irq = 0 },
[ SIGILL ] { .handler = relay_signal,
.is_irq = 0 },
[ SIGWINCH ] { .handler = winch,
.is_irq = 1 },
[ SIGBUS ] { .handler = bus_handler,
.is_irq = 0 },
[ SIGSEGV] { .handler = segv_handler,
.is_irq = 0 },
[ SIGIO ] { .handler = sigio_handler,
.is_irq = 1 },
[ SIGVTALRM ] { .handler = timer_handler,
.is_irq = 1 },
[ SIGALRM ] { .handler = timer_handler,
.is_irq = 1 },
[ SIGUSR2 ] { .handler = usr2_handler,
.is_irq = 0 },
};
void do_longjmp(void *b, int val)
{
sigjmp_buf *buf = b;
siglongjmp(*buf, val);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
|
