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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
HANDLE fileDesHandle (int fd);
static void showMaps () {
MEMORY_BASIC_INFORMATION buf;
LPCVOID lpAddress;
char *state = "<unset>";
char *protect = "<unset>";
for (lpAddress = 0; lpAddress < (LPCVOID)0x80000000; ) {
VirtualQuery (lpAddress, &buf, sizeof (buf));
switch (buf.Protect) {
case PAGE_READONLY:
protect = "PAGE_READONLY";
break;
case PAGE_READWRITE:
protect = "PAGE_READWRITE";
break;
case PAGE_WRITECOPY:
protect = "PAGE_WRITECOPY";
break;
case PAGE_EXECUTE:
protect = "PAGE_EXECUTE";
break;
case PAGE_EXECUTE_READ:
protect = "PAGE_EXECUTE_READ";
break;
case PAGE_EXECUTE_READWRITE:
protect = "PAGE_EXECUTE_READWRITE";
break;
case PAGE_EXECUTE_WRITECOPY:
protect = "PAGE_EXECUTE_WRITECOPY";
break;
case PAGE_GUARD:
protect = "PAGE_GUARD";
break;
case PAGE_NOACCESS:
protect = "PAGE_NOACCESS";
break;
case PAGE_NOCACHE:
protect = "PAGE_NOCACHE";
break;
}
switch (buf.State) {
case MEM_COMMIT:
state = "MEM_COMMIT";
break;
case MEM_FREE:
state = "MEM_FREE";
break;
case MEM_RESERVE:
state = "MEM_RESERVE";
break;
}
fprintf(stderr, "0x%8x %10u %s %s\n",
(uint)buf.BaseAddress,
(uint)buf.RegionSize,
state, protect);
lpAddress += buf.RegionSize;
}
}
void showMem () {
MEMORYSTATUS ms;
ms.dwLength = sizeof (MEMORYSTATUS);
GlobalMemoryStatus (&ms);
fprintf(stderr, "Total Phys. Mem: %ld\nAvail Phys. Mem: %ld\nTotal Page File: %ld\nAvail Page File: %ld\nTotal Virtual: %ld\nAvail Virtual: %ld\n",
ms.dwTotalPhys,
ms.dwAvailPhys,
ms.dwTotalPageFile,
ms.dwAvailPageFile,
ms.dwTotalVirtual,
ms.dwAvailVirtual);
showMaps ();
}
static HANDLE dupHandle (int fd) {
HANDLE dupd;
HANDLE raw;
raw = fileDesHandle (fd);
if (raw == (HANDLE)-1 or raw == 0) {
errno = EBADF;
return 0;
}
/* 'Inspired' by http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/creating_a_child_process_with_redirected_input_and_output.asp
* It's interesting that you can open files for/from other processes...
*/
unless (DuplicateHandle (
GetCurrentProcess(), /* source process */
raw, /* source handle */
GetCurrentProcess(), /* target process */
&dupd, /* target handle - valid in target proc */
0, /* ignored b/c DUPLICATE_SAME_ACCESS used */
TRUE, /* this can be inherited by children */
DUPLICATE_SAME_ACCESS))/* keep the same permissions */
{
errno = ENOMEM;
return 0;
}
return dupd;
}
static inline void Windows_decommit (void *base, size_t length) {
if (0 == VirtualFree (base, length, MEM_DECOMMIT))
die ("VirtualFree decommit failed");
}
static inline void *Windows_mmapAnon (void *start, size_t length) {
void *res;
/* Use "0" instead of "start" as the first argument to VirtualAlloc
* because it is more stable on MinGW (at least).
*/
res = VirtualAlloc ((LPVOID)0/*start*/, length, MEM_COMMIT, PAGE_READWRITE);
if (NULL == res)
res = (void*)-1;
return res;
}
static inline void Windows_release (void *base) {
if (0 == VirtualFree (base, 0, MEM_RELEASE))
die ("VirtualFree release failed");
}
Pid Windows_Process_create (NullString cmds, NullString args, NullString envs,
Fd in, Fd out, Fd err) {
char *cmd;
char *arg;
char *env;
int result;
STARTUPINFO si;
PROCESS_INFORMATION proc;
cmd = (char*)cmds;
arg = (char*)args;
env = (char*)envs;
memset (&proc, 0, sizeof (proc));
memset (&si, 0, sizeof (si));
si.cb = sizeof(si);
si.hStdInput = dupHandle (in);
si.hStdOutput = dupHandle (out);
si.hStdError = dupHandle (err);
si.dwFlags = STARTF_USESTDHANDLES; /* use the above */
if (!si.hStdInput or !si.hStdOutput or !si.hStdError) {
if (si.hStdInput) CloseHandle (si.hStdInput);
if (si.hStdOutput) CloseHandle (si.hStdOutput);
if (si.hStdError) CloseHandle (si.hStdError);
/* errno already faked by create_dup_handle */
return -1;
}
result = CreateProcess (
cmd, /* The executable as a windows path */
arg, /* Command-line as a string */
0, /* Process inherits security params */
0, /* Initial thread inherits security params */
TRUE, /* Inherit HANDLEs set as inherit */
0, /* Normal priority + no special flags */
env, /* Environment as a string {n=v\0}\0 */
0, /* Current directory = parent's */
&si, /* Start info from above */
&proc); /* returned handle */
if (0 == result) {
errno = ENOENT; /* probably does not exist (aka ENOFILE)*/
result = -1;
} else {
/* Process created successfully */
/* We will return the process handle for the 'pid'.
* This way we can TerminateProcess (kill) it and
* _cwait (waitpid) for it.
* The thread handle is not needed, so clean it.
*/
CloseHandle (proc.hThread);
result = (int)proc.hProcess;
}
CloseHandle (si.hStdInput);
CloseHandle (si.hStdOutput);
CloseHandle (si.hStdError);
return result;
}
Int Windows_Process_terminate (Pid pid, Int sig) {
HANDLE h;
h = (HANDLE)pid;
/* We terminate with 'sig' for the _return_ code + 0x80
* Then in the basis library I test for this to decide W_SIGNALED.
* Perhaps not the best choice, but I have no better idea.
*/
unless (TerminateProcess (h, sig | 0x80)) {
errno = ECHILD;
return -1;
}
return 0;
}
|
