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Commit | Line | Data |
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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> | |
1da177e4 LT |
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> | |
1da177e4 LT |
24 | #include "kern_util.h" |
25 | #include "user.h" | |
26 | #include "mem_user.h" | |
27 | #include "init.h" | |
1da177e4 LT |
28 | #include "ptrace_user.h" |
29 | #include "uml-config.h" | |
4fef0c10 | 30 | #include "os.h" |
1d7173ba | 31 | #include "longjmp.h" |
1ffb9164 | 32 | #include "kern_constants.h" |
1da177e4 LT |
33 | |
34 | void stack_protections(unsigned long address) | |
35 | { | |
36 | int prot = PROT_READ | PROT_WRITE | PROT_EXEC; | |
37 | ||
1ffb9164 | 38 | if(mprotect((void *) address, UM_KERN_PAGE_SIZE, prot) < 0) |
1da177e4 LT |
39 | panic("protecting stack failed, errno = %d", errno); |
40 | } | |
41 | ||
42 | void task_protections(unsigned long address) | |
43 | { | |
1ffb9164 JD |
44 | unsigned long guard = address + UM_KERN_PAGE_SIZE; |
45 | unsigned long stack = guard + UM_KERN_PAGE_SIZE; | |
1da177e4 LT |
46 | int prot = 0, pages; |
47 | ||
48 | #ifdef notdef | |
1ffb9164 | 49 | if(mprotect((void *) stack, UM_KERN_PAGE_SIZE, prot) < 0) |
1da177e4 LT |
50 | panic("protecting guard page failed, errno = %d", errno); |
51 | #endif | |
52 | pages = (1 << UML_CONFIG_KERNEL_STACK_ORDER) - 2; | |
53 | prot = PROT_READ | PROT_WRITE | PROT_EXEC; | |
1ffb9164 | 54 | if(mprotect((void *) stack, pages * UM_KERN_PAGE_SIZE, prot) < 0) |
1da177e4 LT |
55 | panic("protecting stack failed, errno = %d", errno); |
56 | } | |
57 | ||
1da177e4 LT |
58 | int raw(int fd) |
59 | { | |
60 | struct termios tt; | |
61 | int err; | |
62 | ||
63 | CATCH_EINTR(err = tcgetattr(fd, &tt)); | |
b4fd310e JD |
64 | if(err < 0) |
65 | return -errno; | |
1da177e4 LT |
66 | |
67 | cfmakeraw(&tt); | |
68 | ||
4fef0c10 | 69 | CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt)); |
b4fd310e JD |
70 | if(err < 0) |
71 | return -errno; | |
1da177e4 LT |
72 | |
73 | /* XXX tcsetattr could have applied only some changes | |
74 | * (and cfmakeraw() is a set of changes) */ | |
75 | return(0); | |
76 | } | |
77 | ||
78 | void setup_machinename(char *machine_out) | |
79 | { | |
80 | struct utsname host; | |
81 | ||
82 | uname(&host); | |
69fada32 PBG |
83 | #ifdef UML_CONFIG_UML_X86 |
84 | # ifndef UML_CONFIG_64BIT | |
8e5cb35a PBG |
85 | if (!strcmp(host.machine, "x86_64")) { |
86 | strcpy(machine_out, "i686"); | |
87 | return; | |
88 | } | |
69fada32 PBG |
89 | # else |
90 | if (!strcmp(host.machine, "i686")) { | |
91 | strcpy(machine_out, "x86_64"); | |
92 | return; | |
93 | } | |
94 | # endif | |
8e5cb35a | 95 | #endif |
1da177e4 LT |
96 | strcpy(machine_out, host.machine); |
97 | } | |
98 | ||
b4ffb6ad | 99 | void setup_hostinfo(char *buf, int len) |
1da177e4 LT |
100 | { |
101 | struct utsname host; | |
102 | ||
103 | uname(&host); | |
b4ffb6ad JD |
104 | snprintf(buf, len, "%s %s %s %s %s", host.sysname, host.nodename, |
105 | host.release, host.version, host.machine); | |
1da177e4 LT |
106 | } |
107 | ||
108 | int setjmp_wrapper(void (*proc)(void *, void *), ...) | |
109 | { | |
4fef0c10 | 110 | va_list args; |
ad28e029 | 111 | jmp_buf buf; |
1da177e4 LT |
112 | int n; |
113 | ||
13c06be3 | 114 | n = UML_SETJMP(&buf); |
1da177e4 LT |
115 | if(n == 0){ |
116 | va_start(args, proc); | |
117 | (*proc)(&buf, &args); | |
118 | } | |
119 | va_end(args); | |
13c06be3 | 120 | return n; |
1da177e4 | 121 | } |