1 /*- 2 * Copyright (c) 2013 Hudson River Trading LLC 3 * Written by: John H. Baldwin <jhb@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <err.h> 29 #include <errno.h> 30 #include <limits.h> 31 #include <stdint.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <wchar.h> 36 37 #include <atf-c.h> 38 39 static char *buf; 40 static size_t len; 41 42 static void 43 assert_stream(const char *contents) 44 { 45 if (strlen(contents) != len) 46 printf("bad length %zd for \"%s\"\n", len, contents); 47 else if (strncmp(buf, contents, strlen(contents)) != 0) 48 printf("bad buffer \"%s\" for \"%s\"\n", buf, contents); 49 } 50 51 ATF_TC_WITHOUT_HEAD(open_group_test); 52 ATF_TC_BODY(open_group_test, tc) 53 { 54 FILE *fp; 55 off_t eob; 56 57 fp = open_memstream(&buf, &len); 58 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed"); 59 60 fprintf(fp, "hello my world"); 61 fflush(fp); 62 assert_stream("hello my world"); 63 eob = ftello(fp); 64 rewind(fp); 65 fprintf(fp, "good-bye"); 66 fseeko(fp, eob, SEEK_SET); 67 fclose(fp); 68 assert_stream("good-bye world"); 69 free(buf); 70 } 71 72 ATF_TC_WITHOUT_HEAD(simple_tests); 73 ATF_TC_BODY(simple_tests, tc) 74 { 75 static const char zerobuf[] = 76 { 'f', 'o', 'o', 0, 0, 0, 0, 'b', 'a', 'r', 0 }; 77 char c; 78 FILE *fp; 79 80 fp = open_memstream(&buf, NULL); 81 ATF_REQUIRE_MSG(fp == NULL, "open_memstream did not fail"); 82 ATF_REQUIRE_MSG(errno == EINVAL, 83 "open_memstream didn't fail with EINVAL"); 84 fp = open_memstream(NULL, &len); 85 ATF_REQUIRE_MSG(fp == NULL, "open_memstream did not fail"); 86 ATF_REQUIRE_MSG(errno == EINVAL, 87 "open_memstream didn't fail with EINVAL"); 88 fp = open_memstream(&buf, &len); 89 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed; errno=%d", errno); 90 fflush(fp); 91 assert_stream(""); 92 if (fwide(fp, 0) >= 0) 93 printf("stream is not byte-oriented\n"); 94 95 fprintf(fp, "fo"); 96 fflush(fp); 97 assert_stream("fo"); 98 fputc('o', fp); 99 fflush(fp); 100 assert_stream("foo"); 101 rewind(fp); 102 fflush(fp); 103 assert_stream(""); 104 fseek(fp, 0, SEEK_END); 105 fflush(fp); 106 assert_stream("foo"); 107 108 /* 109 * Test seeking out past the current end. Should zero-fill the 110 * intermediate area. 111 */ 112 fseek(fp, 4, SEEK_END); 113 fprintf(fp, "bar"); 114 fflush(fp); 115 116 /* 117 * Can't use assert_stream() here since this should contain 118 * embedded null characters. 119 */ 120 if (len != 10) 121 printf("bad length %zd for zero-fill test\n", len); 122 else if (memcmp(buf, zerobuf, sizeof(zerobuf)) != 0) 123 printf("bad buffer for zero-fill test\n"); 124 125 fseek(fp, 3, SEEK_SET); 126 fprintf(fp, " in "); 127 fflush(fp); 128 assert_stream("foo in "); 129 fseek(fp, 0, SEEK_END); 130 fflush(fp); 131 assert_stream("foo in bar"); 132 133 rewind(fp); 134 if (fread(&c, sizeof(c), 1, fp) != 0) 135 printf("fread did not fail\n"); 136 else if (!ferror(fp)) 137 printf("error indicator not set after fread\n"); 138 else 139 clearerr(fp); 140 141 fseek(fp, 4, SEEK_SET); 142 fprintf(fp, "bar baz"); 143 fclose(fp); 144 assert_stream("foo bar baz"); 145 free(buf); 146 } 147 148 ATF_TC_WITHOUT_HEAD(seek_tests); 149 ATF_TC_BODY(seek_tests, tc) 150 { 151 FILE *fp; 152 153 fp = open_memstream(&buf, &len); 154 ATF_REQUIRE_MSG(fp != NULL, "open_memstream failed: %d", errno); 155 156 #define SEEK_FAIL(offset, whence, error) do { \ 157 errno = 0; \ 158 ATF_REQUIRE_MSG(fseeko(fp, (offset), (whence)) != 0, \ 159 "fseeko(%s, %s) did not fail, set pos to %jd", \ 160 __STRING(offset), __STRING(whence), \ 161 (intmax_t)ftello(fp)); \ 162 ATF_REQUIRE_MSG(errno == (error), \ 163 "fseeko(%s, %s) failed with %d rather than %s", \ 164 __STRING(offset), __STRING(whence), errno, \ 165 __STRING(error)); \ 166 } while (0) 167 168 #define SEEK_OK(offset, whence, result) do { \ 169 ATF_REQUIRE_MSG(fseeko(fp, (offset), (whence)) == 0, \ 170 "fseeko(%s, %s) failed: %s", \ 171 __STRING(offset), __STRING(whence), strerror(errno)); \ 172 ATF_REQUIRE_MSG(ftello(fp) == (result), \ 173 "fseeko(%s, %s) seeked to %jd rather than %s", \ 174 __STRING(offset), __STRING(whence), \ 175 (intmax_t)ftello(fp), __STRING(result)); \ 176 } while (0) 177 178 SEEK_FAIL(-1, SEEK_SET, EINVAL); 179 SEEK_FAIL(-1, SEEK_CUR, EINVAL); 180 SEEK_FAIL(-1, SEEK_END, EINVAL); 181 fprintf(fp, "foo"); 182 SEEK_OK(-1, SEEK_CUR, 2); 183 SEEK_OK(0, SEEK_SET, 0); 184 SEEK_OK(-1, SEEK_END, 2); 185 SEEK_OK(OFF_MAX - 1, SEEK_SET, OFF_MAX - 1); 186 SEEK_FAIL(2, SEEK_CUR, EOVERFLOW); 187 fclose(fp); 188 } 189 190 ATF_TP_ADD_TCS(tp) 191 { 192 193 ATF_TP_ADD_TC(tp, open_group_test); 194 ATF_TP_ADD_TC(tp, simple_tests); 195 ATF_TP_ADD_TC(tp, seek_tests); 196 197 return (atf_no_error()); 198 } 199