| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* |
| * NAME |
| * readv01.c |
| * |
| * DESCRIPTION |
| * Testcase to check the basic functionality of the readv(2) system call. |
| * |
| * CALLS |
| * readv() |
| * |
| * ALGORITHM |
| * Create a IO vector, and attempt to readv() various components of it. |
| * |
| * USAGE |
| * readv01 |
| * |
| * HISTORY |
| * 07/2001 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS |
| * None |
| */ |
| #include <sys/types.h> |
| #include <sys/uio.h> |
| #include <sys/fcntl.h> |
| #include <memory.h> |
| #include <errno.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #define K_1 1024 |
| #define M_1 K_1 * K_1 |
| #define G_1 M_1 * K_1 |
| |
| #define NBUFS 4 |
| #define CHUNK 64 |
| #define MAX_IOVEC 16 |
| #define DATA_FILE "readv_data_file" |
| |
| char buf1[K_1], buf2[K_1], buf3[K_1]; |
| |
| struct iovec rd_iovec[MAX_IOVEC] = { |
| /* iov_base *//* iov_len */ |
| |
| /* Test case #1 */ |
| {(buf2 + CHUNK * 10), CHUNK}, |
| |
| /* Test case #2 */ |
| {(buf2 + CHUNK * 11), CHUNK} |
| }; |
| |
| char f_name[K_1]; |
| |
| int fd; |
| char *buf_list[NBUFS]; |
| |
| char *TCID = "readv01"; |
| int TST_TOTAL = 1; |
| extern int Tst_count; |
| |
| int init_buffs(char **); |
| int fill_mem(char *, int, int); |
| long l_seek(int, long, int); |
| char *getenv(); |
| void setup(); |
| void cleanup(); |
| |
| int main(int ac, char **av) |
| { |
| int lc; /* loop counter */ |
| char *msg; /* message returned from parse_opts */ |
| |
| /* parse standard options */ |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg); |
| /*NOTREACHED*/} |
| |
| setup(); |
| |
| /* The following loop checks looping state if -i option given */ |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| /* reset Tst_count in case we are looping */ |
| Tst_count = 0; |
| |
| //test1: |
| l_seek(fd, CHUNK * 11, 0); |
| if (readv(fd, (rd_iovec + 0), 0) == -1) { |
| tst_resm(TFAIL, "readv() failed with unexpected errno " |
| "%d", errno); |
| } else { |
| tst_resm(TPASS, "readv read 0 io vectors"); |
| } |
| |
| //test2: |
| l_seek(fd, CHUNK * 12, 0); |
| if (readv(fd, (rd_iovec + 1), 4) != CHUNK) { |
| tst_resm(TFAIL, "readv failed reading %d bytes, " |
| "followed by two NULL vectors", CHUNK); |
| } else { |
| tst_resm(TPASS, "readv passed reading %d bytes, " |
| "followed by two NULL vectors", CHUNK); |
| } |
| } |
| close(fd); |
| cleanup(); |
| |
| /*NOTREACHED*/ return 0; |
| } |
| |
| int init_buffs(char *pbufs[]) |
| { |
| int i; |
| |
| for (i = 0; pbufs[i] != NULL; i++) { |
| switch (i) { |
| case 0: |
| /*FALLTHROUGH*/ case 1: |
| fill_mem(pbufs[i], 0, 1); |
| break; |
| |
| case 2: |
| fill_mem(pbufs[i], 1, 0); |
| break; |
| |
| default: |
| tst_brkm(TBROK, cleanup, "Error in init_buffs()"); |
| } |
| } |
| return 0; |
| } |
| |
| int fill_mem(char *c_ptr, int c1, int c2) |
| { |
| int count; |
| |
| for (count = 1; count <= K_1 / CHUNK; count++) { |
| if (count & 0x01) { /* if odd */ |
| memset(c_ptr, c1, CHUNK); |
| } else { /* if even */ |
| memset(c_ptr, c2, CHUNK); |
| } |
| } |
| return 0; |
| } |
| |
| long l_seek(int fdesc, long offset, int whence) |
| { |
| if (lseek(fdesc, offset, whence) < 0) { |
| tst_brkm(TBROK, cleanup, "lseek Failed : errno = %d", errno); |
| } |
| return 0; |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| */ |
| void setup() |
| { |
| int nbytes; |
| |
| /* capture signals */ |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| /* Pause if that option was specified */ |
| TEST_PAUSE; |
| |
| /* make a temporary directory and cd to it */ |
| tst_tmpdir(); |
| |
| buf_list[0] = buf1; |
| buf_list[1] = buf2; |
| buf_list[2] = buf3; |
| buf_list[3] = NULL; |
| |
| init_buffs(buf_list); |
| |
| sprintf(f_name, "%s.%d", DATA_FILE, getpid()); |
| |
| if ((fd = open(f_name, O_WRONLY | O_CREAT, 0666)) < 0) { |
| tst_brkm(TBROK, cleanup, "open failed: fname = %s, " |
| "errno = %d", f_name, errno); |
| } else { |
| if ((nbytes = write(fd, buf_list[2], K_1)) != K_1) { |
| tst_brkm(TBROK, cleanup, "write failed: nbytes " |
| "= %d errno = %d", nbytes, errno); |
| } |
| } |
| |
| if (close(fd) < 0) { |
| tst_brkm(TBROK, cleanup, "close failed: errno = %d", errno); |
| } |
| |
| if ((fd = open(f_name, O_RDONLY, 0666)) < 0) { |
| tst_brkm(TBROK, cleanup, "open failed: fname = %s, " |
| "errno = %d", f_name, errno); |
| } |
| } |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup() |
| { |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| if (unlink(f_name) < 0) { |
| tst_brkm(TBROK, NULL, "unlink FAILED: file %s, errno %d", |
| f_name, errno); |
| } |
| tst_rmdir(); |
| tst_exit(); |
| } |