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
|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*=====================================================================
**
** Source: SetEndOfFile.c (test 2)
**
** Purpose: Tests the PAL implementation of the SetEndOfFile function.
** This test will attempt to truncate a file
**
**
**===================================================================*/
#include <palsuite.h>
const char* szStringTest = "The quick fox jumped over the lazy dog's back.";
const char* szTextFile = "text.txt";
int __cdecl main(int argc, char *argv[])
{
HANDLE hFile = NULL;
DWORD dwByteCount = 0;
DWORD dwBytesWritten;
BOOL bRc = FALSE;
char szBuffer[100];
DWORD dwBytesRead = 0;
FILE *pFile = NULL;
if (0 != PAL_Initialize(argc,argv))
{
return FAIL;
}
// create a test file
hFile = CreateFile(szTextFile,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(hFile == INVALID_HANDLE_VALUE)
{
Fail("SetEndOfFile: ERROR -> Unable to create file \"%s\".\n",
szTextFile);
}
bRc = WriteFile(hFile, szStringTest, 20, &dwBytesWritten, NULL);
if (bRc != TRUE)
{
Trace("SetEndOfFile: ERROR -> Uable to write to \"%s\".\n",
szTextFile);
bRc = CloseHandle(hFile);
if (bRc != TRUE)
{
Trace("SetEndOfFile: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
bRc = CloseHandle(hFile);
if (bRc != TRUE)
{
Fail("SetEndOfFile: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
// open the test file
hFile = CreateFile(szTextFile,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(hFile == INVALID_HANDLE_VALUE)
{
Fail("SetEndOfFile: ERROR -> Unable to open file \"%s\".\n",
szTextFile);
}
// read a bit of the file to move the file pointer
dwByteCount = 10;
bRc = ReadFile(hFile, szBuffer, dwByteCount, &dwBytesRead, NULL);
if (bRc != TRUE)
{
Trace("SetEndOfFile: ERROR -> Uable to read from \"%s\".\n",
szTextFile);
bRc = CloseHandle(hFile);
if (bRc != TRUE)
{
Trace("SetEndOfFile: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
bRc = SetEndOfFile(hFile);
if (bRc != TRUE)
{
Trace("SetEndOfFile: ERROR -> Uable to set end of file.\n");
bRc = CloseHandle(hFile);
if (bRc != TRUE)
{
Trace("SetEndOfFile: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
PAL_TerminateEx(FAIL);
return FAIL;
}
bRc = CloseHandle(hFile);
if (bRc != TRUE)
{
Fail("SetEndOfFile: ERROR -> Unable to close file \"%s\".\n",
szTextFile);
}
// open and read the test file
pFile = fopen(szTextFile, "r");
if (pFile == NULL)
{
Fail("SetEndOfFile: ERROR -> fopen was unable to open file \"%s\".\n",
szTextFile);
}
// since we truncated the file at 10 characters,
// try reading 20 just to be safe
memset(szBuffer, 0, 100);
fgets(szBuffer, 20, pFile);
fclose(pFile);
if (strlen(szBuffer) != dwByteCount)
{
Fail("SetEndOfFile: ERROR -> file apparently not truncated at "
"correct position.\n");
}
if (strncmp(szBuffer, szStringTest, dwByteCount) != 0)
{
Fail("SetEndOfFile: ERROR -> truncated file contents doesn't "
"compare with what should be there\n");
}
PAL_Terminate();
return PASS;
}
|
