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
|
// RUN: %clangxx_asan -O0 %s -DTEMP_DIR='"'"%T"'"' -o %t && %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O1 %s -DTEMP_DIR='"'"%T"'"' -o %t && %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O2 %s -DTEMP_DIR='"'"%T"'"' -o %t && %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O3 %s -DTEMP_DIR='"'"%T"'"' -o %t && %t 2>&1 | FileCheck %s
//
// RUN: %clangxx_asan -O0 %s -D_FILE_OFFSET_BITS=64 -DTEMP_DIR='"'"%T"'"' -o %t && %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O1 %s -D_FILE_OFFSET_BITS=64 -DTEMP_DIR='"'"%T"'"' -o %t && %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O2 %s -D_FILE_OFFSET_BITS=64 -DTEMP_DIR='"'"%T"'"' -o %t && %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O3 %s -D_FILE_OFFSET_BITS=64 -DTEMP_DIR='"'"%T"'"' -o %t && %t 2>&1 | FileCheck %s
#include <dirent.h>
#include <memory.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int main() {
// Ensure the readdir_r interceptor doesn't erroneously mark the entire dirent
// as written when the end of the directory pointer is reached.
fputs("test1: reading the " TEMP_DIR " directory...\n", stderr);
DIR *d = opendir(TEMP_DIR);
struct dirent *result = (struct dirent *)(0xfeedbeef);
// We assume the temp dir for this test doesn't have crazy long file names.
char entry_buffer[4096];
memset(entry_buffer, 0xab, sizeof(entry_buffer));
unsigned count = 0;
do {
// Stamp the entry struct to try to trick the interceptor.
((struct dirent *)entry_buffer)->d_reclen = 9999;
if (readdir_r(d, (struct dirent *)entry_buffer, &result) != 0)
abort();
++count;
} while (result != NULL);
fprintf(stderr, "read %d entries\n", count);
closedir(d);
// CHECK: test1: reading the {{.*}} directory...
// CHECK-NOT: stack-buffer-overflow
// CHECK: read {{.*}} entries
// Ensure the readdir64_r interceptor doesn't have the bug either.
fputs("test2: reading the " TEMP_DIR " directory...\n", stderr);
d = opendir(TEMP_DIR);
struct dirent64 *result64;
memset(entry_buffer, 0xab, sizeof(entry_buffer));
count = 0;
do {
// Stamp the entry struct to try to trick the interceptor.
((struct dirent64 *)entry_buffer)->d_reclen = 9999;
if (readdir64_r(d, (struct dirent64 *)entry_buffer, &result64) != 0)
abort();
++count;
} while (result64 != NULL);
fprintf(stderr, "read %d entries\n", count);
closedir(d);
// CHECK: test2: reading the {{.*}} directory...
// CHECK-NOT: stack-buffer-overflow
// CHECK: read {{.*}} entries
}
|
