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37 #ifdef HAVE_SYS_MMAN_H
47 RCSID("$Id: test-mem.c 21005 2007-06-08 01:54:35Z lha $");
49 /* #undef HAVE_MMAP */
56 enum rk_test_mem_type type;
60 struct sigaction sa, osa;
68 char msg[] = "SIGSEGV i current test: ";
70 fd = open("/dev/stdout", O_WRONLY, 0600);
72 write(fd, msg, sizeof(msg) - 1);
73 write(fd, testname, strlen(testname));
82 errx(1, "test %s run recursively on %s", name, testname); \
83 testname = strdup(name); \
84 if (testname == NULL) \
88 void * ROKEN_LIB_FUNCTION
89 rk_test_mem_alloc(enum rk_test_mem_type type, const char *name,
90 void *buf, size_t size)
105 map.data_start = p + 1;
109 size_t pagesize = getpagesize();
120 fd = open ("/dev/zero", O_RDONLY);
122 err (1, "open /dev/zero");
125 flags |= MAP_PRIVATE;
127 map.size = size + pagesize - (size % pagesize) + pagesize * 2;
129 p = (unsigned char *)mmap(0, map.size, PROT_READ | PROT_WRITE,
131 if (p == (unsigned char *)MAP_FAILED)
136 ret = mprotect ((void *)p, pagesize, 0);
140 ret = mprotect (p + map.size - pagesize, pagesize, 0);
146 map.data_start = p + map.size - pagesize - size;
149 map.data_start = p + pagesize;
155 sigemptyset (&sa.sa_mask);
158 sa.sa_flags |= SA_RESETHAND;
160 sa.sa_handler = segv_handler;
161 sigaction (SIGSEGV, &sa, &osa);
163 map.data_size = size;
165 memcpy(map.data_start, buf, size);
166 return map.data_start;
169 void ROKEN_LIB_FUNCTION
170 rk_test_mem_free(const char *map_name)
173 unsigned char *p = map.start;
175 if (testname == NULL)
176 errx(1, "test_mem_free call on no free");
179 errx(1, "%s: %s underrun %x\n", testname, map_name, p[0]);
180 if (p[map.size] != 0xff)
181 errx(1, "%s: %s overrun %x\n", testname, map_name, p[map.size - 1]);
186 if (testname == NULL)
187 errx(1, "test_mem_free call on no free");
189 ret = munmap (map.start, map.size);
198 sigaction (SIGSEGV, &osa, NULL);