1 /* IBM Corporation */ 2 /* 01/02/2003 Port to LTP avenkat (at) us.ibm.com*/ 3 /* 06/30/2001 Port to Linux nsharoff (at) us.ibm.com */ 4 /* 5 * Copyright (c) International Business Machines Corp., 2003 6 * 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 16 * the GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23 /* mfile_insque: 24 * This test mmaps a portion of a file, and then mmaps the next 25 * portion of the file in front of the virtual space containing the 26 * original mmap. It then mmaps the preceding portion of the file behind 27 * the original mmap. None of the mmaps can be concatenated. 28 */ 29 #include <sys/types.h> 30 #include <sys/mman.h> 31 #include <unistd.h> 32 #include <fcntl.h> 33 #include <signal.h> 34 #include <stdio.h> 35 #include <errno.h> 36 /* #include <sys/pte.h> */ 37 38 /***** LTP Port *****/ 39 #include "test.h" 40 /***** ** ** *****/ 41 42 #ifndef MMU_NARROWPTEPG 43 #define MMU_NARROWPTEPG 1024 44 #endif 45 46 /***** LTP Port *****/ 47 #define FAILED 0 48 #define PASSED 1 49 50 int local_flag = PASSED; 51 char *TCID = "mmapstress05"; //mfile_insque 52 FILE *temp; 53 int TST_TOTAL = 1; 54 55 int anyfail(); 56 void ok_exit(); 57 /***** ** ** *****/ 58 59 #define ERROR(M) (void)fprintf(stderr, "%s: errno = %d; " M "\n", \ 60 progname, errno); 61 #define CLEAN (void)close(fd); \ 62 if (munmap(mmapaddr+pagesize, pagesize) == -1) { \ 63 ERROR("munmap failed"); \ 64 } \ 65 if (munmap(mmapaddr, pagesize) == -1) { \ 66 ERROR("munmap failed"); \ 67 } \ 68 if (munmap(mmapaddr+2*pagesize, pagesize) == -1) { \ 69 ERROR("munmap failed"); \ 70 } \ 71 if (unlink(tmpname)) { \ 72 ERROR("couldn't clean up temp file"); \ 73 } 74 75 #define CERROR(M) CLEAN; ERROR(M) 76 77 #define CATCH_SIG(SIG) \ 78 if (sigaction(SIG, &sa, 0) == -1) { \ 79 ERROR("couldn't catch signal " #SIG); \ 80 exit(1); \ 81 } 82 83 extern time_t time(time_t *); 84 extern char *ctime(const time_t *); 85 extern void exit(int); 86 87 static int fd; 88 //static char *tmpname; 12/31/02 89 static char tmpname[] = "fileXXXXXX"; 90 static char *progname; 91 92 /*ARGSUSED*/ static 93 void cleanup(int sig) 94 { 95 /* 96 * Don't check error codes - we could be signaled before the file is 97 * created. 98 */ 99 (void)close(fd); 100 (void)unlink(tmpname); 101 exit(1); 102 } 103 104 int main(int argc, char *argv[]) 105 { 106 size_t pagesize = (size_t) sysconf(_SC_PAGE_SIZE); 107 caddr_t mmapaddr; 108 char *buf; 109 time_t t; 110 int i; 111 struct sigaction sa; 112 113 if (!argc) { 114 (void)fprintf(stderr, "argc == 0\n"); 115 return 1; 116 } 117 tst_tmpdir(); 118 progname = argv[0]; 119 (void)time(&t); 120 // (void)printf("%s: Started %s", argv[0], ctime(&t)); LTP Port 121 if (sbrk(pagesize - ((ulong) sbrk(0) & (pagesize - 1))) == (char *)-1) { 122 ERROR("couldn't round up brk"); 123 anyfail(); 124 } 125 if ((buf = sbrk(pagesize)) == (char *)-1) { 126 ERROR("couldn't allocate output buffer"); 127 anyfail(); 128 } 129 if ((mmapaddr = (caddr_t) sbrk(0)) == (caddr_t) - 1) { 130 ERROR("couldn't find top of brk"); 131 anyfail(); 132 } 133 134 /* i changed the second argument to NULL 135 from argv[0]. otherwise it causes the 136 open to fail 137 -- sreeni 138 */ 139 140 if ((fd = mkstemp(tmpname)) == -1) { 141 ERROR("mkstemp failed"); 142 anyfail(); 143 } 144 sa.sa_handler = cleanup; 145 sa.sa_flags = 0; 146 if (sigemptyset(&sa.sa_mask)) { 147 ERROR("sigemptyset failed"); 148 anyfail(); 149 } 150 CATCH_SIG(SIGINT); 151 CATCH_SIG(SIGQUIT); 152 CATCH_SIG(SIGTERM); 153 for (i = 0; i < pagesize; i++) 154 buf[i] = 'a'; 155 if (write(fd, buf, pagesize) != pagesize) { 156 CERROR("couldn't write page case 1"); 157 anyfail(); 158 } 159 if (lseek(fd, MMU_NARROWPTEPG * pagesize, SEEK_SET) == -1) { 160 CERROR("lseek case 1 failed"); 161 anyfail(); 162 } 163 if (write(fd, buf, pagesize) != pagesize) { 164 CERROR("couldn't write page case 2"); 165 anyfail(); 166 } 167 if (lseek(fd, 2 * MMU_NARROWPTEPG * pagesize, SEEK_SET) == -1) { 168 CERROR("lseek case 2 failed"); 169 anyfail(); 170 } 171 if (write(fd, buf, pagesize) != pagesize) { 172 CERROR("couldn't write page case 3"); 173 anyfail(); 174 } 175 /* fd now references a sparce file which has three pages widely spaced. 176 * Hopefully different mfile objects will be needed to reference each 177 * page. 178 */ 179 if (mmap(mmapaddr + pagesize, pagesize, PROT_READ, 180 MAP_FILE | MAP_PRIVATE | MAP_FIXED, fd, 181 MMU_NARROWPTEPG * pagesize) 182 == (caddr_t) - 1) { 183 CERROR("first mmap (of third page) failed"); 184 anyfail(); 185 } 186 if (mmap(mmapaddr, pagesize, PROT_READ, 187 MAP_FILE | MAP_PRIVATE | MAP_FIXED, fd, 188 2 * MMU_NARROWPTEPG * pagesize) 189 == (caddr_t) - 1) { 190 CERROR("second mmap (of fifth page) failed"); 191 anyfail(); 192 } 193 if (mmap(mmapaddr + 2 * pagesize, pagesize, PROT_READ, 194 MAP_FILE | MAP_PRIVATE | MAP_FIXED, fd, 0) == (caddr_t) - 1) { 195 CERROR("third mmap (of first page) failed"); 196 anyfail(); 197 } 198 CLEAN; /*comment */ 199 (void)time(&t); 200 // (void)printf("%s: Finished %s", argv[0], ctime(&t)); LTP Port 201 ok_exit(); 202 tst_exit(); 203 } 204 205 void ok_exit(void) 206 { 207 tst_resm(TPASS, "Test passed\n"); 208 tst_rmdir(); 209 tst_exit(); 210 } 211 212 int anyfail(void) 213 { 214 tst_brkm(TFAIL, tst_rmdir, "Test failed\n"); 215 } 216
