1/*
2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#include <stdio.h>
7#include <stdlib.h>
8#include <unistd.h>
9#include <limits.h>
10#include <sys/mman.h>
11#include <sys/stat.h>
12#include <sys/utsname.h>
13#include <sys/param.h>
14#include <sys/time.h>
15#include "asm/types.h"
16#include <ctype.h>
17#include <signal.h>
18#include <wait.h>
19#include <errno.h>
20#include <stdarg.h>
21#include <sched.h>
22#include <termios.h>
23#include <string.h>
24#include "kern_util.h"
25#include "user.h"
26#include "mem_user.h"
27#include "init.h"
28#include "ptrace_user.h"
29#include "uml-config.h"
30#include "os.h"
31#include "longjmp.h"
32#include "kern_constants.h"
33
34void stack_protections(unsigned long address)
35{
36	if(mprotect((void *) address, UM_THREAD_SIZE,
37		    PROT_READ | PROT_WRITE | PROT_EXEC) < 0)
38		panic("protecting stack failed, errno = %d", errno);
39}
40
41int raw(int fd)
42{
43	struct termios tt;
44	int err;
45
46	CATCH_EINTR(err = tcgetattr(fd, &tt));
47	if(err < 0)
48		return -errno;
49
50	cfmakeraw(&tt);
51
52	CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt));
53	if(err < 0)
54		return -errno;
55
56	return 0;
57}
58
59void setup_machinename(char *machine_out)
60{
61	struct utsname host;
62
63	uname(&host);
64#ifdef UML_CONFIG_UML_X86
65# ifndef UML_CONFIG_64BIT
66	if (!strcmp(host.machine, "x86_64")) {
67		strcpy(machine_out, "i686");
68		return;
69	}
70# else
71	if (!strcmp(host.machine, "i686")) {
72		strcpy(machine_out, "x86_64");
73		return;
74	}
75# endif
76#endif
77	strcpy(machine_out, host.machine);
78}
79
80void setup_hostinfo(char *buf, int len)
81{
82	struct utsname host;
83
84	uname(&host);
85	snprintf(buf, len, "%s %s %s %s %s", host.sysname, host.nodename,
86		 host.release, host.version, host.machine);
87}
88
89int setjmp_wrapper(void (*proc)(void *, void *), ...)
90{
91	va_list args;
92	jmp_buf buf;
93	int n;
94
95	n = UML_SETJMP(&buf);
96	if(n == 0){
97		va_start(args, proc);
98		(*proc)(&buf, &args);
99	}
100	va_end(args);
101	return n;
102}
103
104void os_dump_core(void)
105{
106	signal(SIGSEGV, SIG_DFL);
107	abort();
108}
109