Commit | Line | Data |
---|---|---|
4fef0c10 | 1 | /* |
1da177e4 LT |
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 <setjmp.h> | |
11 | #include <sys/mman.h> | |
12 | #include <sys/stat.h> | |
13 | #include <sys/utsname.h> | |
14 | #include <sys/param.h> | |
15 | #include <sys/time.h> | |
16 | #include "asm/types.h" | |
17 | #include <ctype.h> | |
18 | #include <signal.h> | |
19 | #include <wait.h> | |
20 | #include <errno.h> | |
21 | #include <stdarg.h> | |
22 | #include <sched.h> | |
23 | #include <termios.h> | |
24 | #include <string.h> | |
25 | #include "user_util.h" | |
26 | #include "kern_util.h" | |
27 | #include "user.h" | |
28 | #include "mem_user.h" | |
29 | #include "init.h" | |
1da177e4 LT |
30 | #include "ptrace_user.h" |
31 | #include "uml-config.h" | |
4fef0c10 | 32 | #include "os.h" |
1d7173ba | 33 | #include "longjmp.h" |
1da177e4 LT |
34 | |
35 | void stack_protections(unsigned long address) | |
36 | { | |
37 | int prot = PROT_READ | PROT_WRITE | PROT_EXEC; | |
38 | ||
4fef0c10 | 39 | if(mprotect((void *) address, page_size(), prot) < 0) |
1da177e4 LT |
40 | panic("protecting stack failed, errno = %d", errno); |
41 | } | |
42 | ||
43 | void task_protections(unsigned long address) | |
44 | { | |
45 | unsigned long guard = address + page_size(); | |
46 | unsigned long stack = guard + page_size(); | |
47 | int prot = 0, pages; | |
48 | ||
49 | #ifdef notdef | |
50 | if(mprotect((void *) stack, page_size(), prot) < 0) | |
51 | panic("protecting guard page failed, errno = %d", errno); | |
52 | #endif | |
53 | pages = (1 << UML_CONFIG_KERNEL_STACK_ORDER) - 2; | |
54 | prot = PROT_READ | PROT_WRITE | PROT_EXEC; | |
55 | if(mprotect((void *) stack, pages * page_size(), prot) < 0) | |
56 | panic("protecting stack failed, errno = %d", errno); | |
57 | } | |
58 | ||
1da177e4 LT |
59 | int raw(int fd) |
60 | { | |
61 | struct termios tt; | |
62 | int err; | |
63 | ||
64 | CATCH_EINTR(err = tcgetattr(fd, &tt)); | |
b4fd310e JD |
65 | if(err < 0) |
66 | return -errno; | |
1da177e4 LT |
67 | |
68 | cfmakeraw(&tt); | |
69 | ||
4fef0c10 | 70 | CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt)); |
b4fd310e JD |
71 | if(err < 0) |
72 | return -errno; | |
1da177e4 LT |
73 | |
74 | /* XXX tcsetattr could have applied only some changes | |
75 | * (and cfmakeraw() is a set of changes) */ | |
76 | return(0); | |
77 | } | |
78 | ||
79 | void setup_machinename(char *machine_out) | |
80 | { | |
81 | struct utsname host; | |
82 | ||
83 | uname(&host); | |
8e5cb35a PBG |
84 | #if defined(UML_CONFIG_UML_X86) && !defined(UML_CONFIG_64BIT) |
85 | if (!strcmp(host.machine, "x86_64")) { | |
86 | strcpy(machine_out, "i686"); | |
87 | return; | |
88 | } | |
89 | #endif | |
1da177e4 LT |
90 | strcpy(machine_out, host.machine); |
91 | } | |
92 | ||
93 | char host_info[(_UTSNAME_LENGTH + 1) * 4 + _UTSNAME_NODENAME_LENGTH + 1]; | |
94 | ||
95 | void setup_hostinfo(void) | |
96 | { | |
97 | struct utsname host; | |
98 | ||
99 | uname(&host); | |
100 | sprintf(host_info, "%s %s %s %s %s", host.sysname, host.nodename, | |
101 | host.release, host.version, host.machine); | |
102 | } | |
103 | ||
104 | int setjmp_wrapper(void (*proc)(void *, void *), ...) | |
105 | { | |
4fef0c10 | 106 | va_list args; |
ad28e029 | 107 | jmp_buf buf; |
1da177e4 LT |
108 | int n; |
109 | ||
110 | n = sigsetjmp(buf, 1); | |
111 | if(n == 0){ | |
112 | va_start(args, proc); | |
113 | (*proc)(&buf, &args); | |
114 | } | |
115 | va_end(args); | |
116 | return(n); | |
117 | } |