1 // RUN: %clangxx_scudo %s -lstdc++ -o %t
2 // RUN: %run %t ownership 2>&1
3 // RUN: %run %t ownership-and-size 2>&1
4 // RUN: %run %t heap-size 2>&1
5 // RUN: %env_scudo_opts="allocator_may_return_null=1" %run %t soft-limit 2>&1
6 // RUN: %env_scudo_opts="allocator_may_return_null=1" not %run %t hard-limit 2>&1
7
8 // Tests that the sanitizer interface functions behave appropriately.
9
10 #include <stdlib.h>
11 #include <assert.h>
12 #include <string.h>
13 #include <unistd.h>
14
15 #include <vector>
16
17 #include <sanitizer/allocator_interface.h>
18 #include <sanitizer/scudo_interface.h>
19
main(int argc,char ** argv)20 int main(int argc, char **argv)
21 {
22 assert(argc == 2);
23
24 if (!strcmp(argv[1], "ownership")) {
25 // Ensures that __sanitizer_get_ownership can be called before any other
26 // allocator function, and that it behaves properly on a pointer not owned
27 // by us.
28 assert(!__sanitizer_get_ownership(argv));
29 }
30 if (!strcmp(argv[1], "ownership-and-size")) {
31 // Tests that __sanitizer_get_ownership and __sanitizer_get_allocated_size
32 // behave properly on chunks allocated by the Primary and Secondary.
33 void *p;
34 std::vector<ssize_t> sizes{1, 8, 16, 32, 1024, 32768,
35 1 << 16, 1 << 17, 1 << 20, 1 << 24};
36 for (size_t size : sizes) {
37 p = malloc(size);
38 assert(p);
39 assert(__sanitizer_get_ownership(p));
40 assert(__sanitizer_get_allocated_size(p) >= size);
41 free(p);
42 }
43 }
44 if (!strcmp(argv[1], "heap-size")) {
45 // Ensures that __sanitizer_get_heap_size can be called before any other
46 // allocator function.
47 assert(__sanitizer_get_heap_size() >= 0);
48 }
49 if (!strcmp(argv[1], "soft-limit")) {
50 // Verifies that setting the soft RSS limit at runtime works as expected.
51 std::vector<void *> pointers;
52 size_t size = 1 << 19; // 512Kb
53 for (int i = 0; i < 5; i++) {
54 void *p = malloc(size);
55 memset(p, 0, size);
56 pointers.push_back(p);
57 }
58 // Set the soft RSS limit to 1Mb.
59 __scudo_set_rss_limit(1, 0);
60 usleep(20000);
61 // The following allocation should return NULL.
62 void *p = malloc(size);
63 assert(!p);
64 // Remove the soft RSS limit.
65 __scudo_set_rss_limit(0, 0);
66 // The following allocation should succeed.
67 p = malloc(size);
68 assert(p);
69 free(p);
70 while (!pointers.empty()) {
71 free(pointers.back());
72 pointers.pop_back();
73 }
74 }
75 if (!strcmp(argv[1], "hard-limit")) {
76 // Verifies that setting the hard RSS limit at runtime works as expected.
77 std::vector<void *> pointers;
78 size_t size = 1 << 19; // 512Kb
79 for (int i = 0; i < 5; i++) {
80 void *p = malloc(size);
81 memset(p, 0, size);
82 pointers.push_back(p);
83 }
84 // Set the hard RSS limit to 1Mb
85 __scudo_set_rss_limit(1, 1);
86 usleep(20000);
87 // The following should trigger our death.
88 void *p = malloc(size);
89 }
90
91 return 0;
92 }
93