--- /dev/null
+File system supports the default behavior.
+File system magic#: 0x58465342
+Allocation size: 4096
+
+01. Test empty file
+01.01 SEEK_DATA expected -1 with errno -6, got -6. succ
+01.02 SEEK_HOLE expected -1 with errno -6, got -6. succ
+01.03 SEEK_HOLE expected -1 with errno -6, got -6. succ
+
+02. Test a tiny full file
+02.01 SEEK_HOLE expected 8 or 8, got 8. succ
+02.02 SEEK_DATA expected 0 or 0, got 0. succ
+02.03 SEEK_DATA expected 1 or 1, got 1. succ
+02.04 SEEK_HOLE expected 8 or 8, got 8. succ
+02.05 SEEK_DATA expected 7 or 7, got 7. succ
+02.06 SEEK_HOLE expected -1 with errno -6, got -6. succ
+02.07 SEEK_DATA expected -1 with errno -6, got -6. succ
+02.08 SEEK_HOLE expected -1 with errno -6, got -6. succ
+02.09 SEEK_DATA expected -1 with errno -6, got -6. succ
+
+03. Test a larger full file
+03.01 SEEK_HOLE expected 8292 or 8292, got 8292. succ
+03.02 SEEK_HOLE expected 8292 or 8292, got 8292. succ
+03.03 SEEK_DATA expected 0 or 0, got 0. succ
+03.04 SEEK_DATA expected 1 or 1, got 1. succ
+03.05 SEEK_HOLE expected 8292 or 8292, got 8292. succ
+03.06 SEEK_DATA expected 8291 or 8291, got 8291. succ
+03.07 SEEK_HOLE expected -1 with errno -6, got -6. succ
+03.08 SEEK_DATA expected -1 with errno -6, got -6. succ
+03.09 SEEK_HOLE expected -1 with errno -6, got -6. succ
+03.10 SEEK_DATA expected -1 with errno -6, got -6. succ
+
+04. Test file hole at beg, data at end
+04.01 SEEK_HOLE expected 0 or 8200, got 0. succ
+04.02 SEEK_HOLE expected 1 or 8200, got 1. succ
+04.03 SEEK_DATA expected 8192 or 0, got 8192. succ
+04.04 SEEK_DATA expected 8192 or 1, got 8192. succ
+04.05 SEEK_HOLE expected 8191 or 8200, got 8191. succ
+04.06 SEEK_DATA expected 8192 or 8191, got 8192. succ
+04.07 SEEK_HOLE expected 8200 or 8200, got 8200. succ
+04.08 SEEK_DATA expected 8192 or 8192, got 8192. succ
+04.09 SEEK_HOLE expected 8200 or 8200, got 8200. succ
+04.10 SEEK_DATA expected 8193 or 8193, got 8193. succ
+04.11 SEEK_HOLE expected 8200 or 8200, got 8200. succ
+04.12 SEEK_DATA expected 8199 or 8199, got 8199. succ
+04.13 SEEK_HOLE expected -1 with errno -6, got -6. succ
+04.14 SEEK_DATA expected -1 with errno -6, got -6. succ
+04.15 SEEK_HOLE expected -1 with errno -6, got -6. succ
+04.16 SEEK_DATA expected -1 with errno -6, got -6. succ
+
+05. Test file data at beg, hole at end
+05.01 SEEK_HOLE expected 4096 or 16384, got 4096. succ
+05.02 SEEK_HOLE expected 4096 or 16384, got 4096. succ
+05.03 SEEK_DATA expected 0 or 0, got 0. succ
+05.04 SEEK_DATA expected 1 or 1, got 1. succ
+05.05 SEEK_HOLE expected 4096 or 16384, got 4096. succ
+05.06 SEEK_DATA expected 4095 or 4095, got 4095. succ
+05.07 SEEK_HOLE expected 4096 or 16384, got 4096. succ
+05.08 SEEK_DATA expected -1 with errno -6, got -6. succ
+05.09 SEEK_HOLE expected 4097 or 16384, got 4097. succ
+05.10 SEEK_DATA expected -1 with errno -6, got -6. succ
+05.11 SEEK_HOLE expected 16383 or 16384, got 16383. succ
+05.12 SEEK_DATA expected -1 with errno -6, got -6. succ
+05.13 SEEK_HOLE expected -1 with errno -6, got -6. succ
+05.14 SEEK_DATA expected -1 with errno -6, got -6. succ
+05.15 SEEK_HOLE expected -1 with errno -6, got -6. succ
+05.16 SEEK_DATA expected -1 with errno -6, got -6. succ
+
+06. Test file hole data hole data
+06.01 SEEK_HOLE expected 0 or 16384, got 0. succ
+06.02 SEEK_HOLE expected 1 or 16384, got 1. succ
+06.03 SEEK_DATA expected 4096 or 0, got 4096. succ
+06.04 SEEK_DATA expected 4096 or 1, got 4096. succ
+06.05 SEEK_HOLE expected 4095 or 16384, got 4095. succ
+06.06 SEEK_DATA expected 4096 or 4095, got 4096. succ
+06.07 SEEK_HOLE expected 8192 or 16384, got 16384. succ
+06.08 SEEK_DATA expected 4096 or 4096, got 4096. succ
+06.09 SEEK_HOLE expected 8192 or 16384, got 16384. succ
+06.10 SEEK_DATA expected 4097 or 4097, got 4097. succ
+06.11 SEEK_HOLE expected 8192 or 16384, got 16384. succ
+06.12 SEEK_DATA expected 8191 or 8191, got 8191. succ
+06.13 SEEK_HOLE expected 8192 or 16384, got 16384. succ
+06.14 SEEK_DATA expected 12288 or 8192, got 8192. succ
+06.15 SEEK_HOLE expected 8193 or 16384, got 16384. succ
+06.16 SEEK_DATA expected 12288 or 8193, got 8193. succ
+06.17 SEEK_HOLE expected 12287 or 16384, got 16384. succ
+06.18 SEEK_DATA expected 12288 or 12287, got 12287. succ
+06.19 SEEK_HOLE expected 16384 or 16384, got 16384. succ
+06.20 SEEK_DATA expected 12288 or 12288, got 12288. succ
+06.21 SEEK_HOLE expected 16384 or 16384, got 16384. succ
+06.22 SEEK_DATA expected 12289 or 12289, got 12289. succ
+06.23 SEEK_HOLE expected 16384 or 16384, got 16384. succ
+06.24 SEEK_DATA expected 16383 or 16383, got 16383. succ
+06.25 SEEK_HOLE expected -1 with errno -6, got -6. succ
+06.26 SEEK_DATA expected -1 with errno -6, got -6. succ
+06.27 SEEK_HOLE expected -1 with errno -6, got -6. succ
+06.28 SEEK_DATA expected -1 with errno -6, got -6. succ
+
+07. Test file with unwritten extents, only have dirty pages
+07.01 SEEK_HOLE expected 0 or 4194304, got 4194304. succ
+07.02 SEEK_HOLE expected 1 or 4194304, got 4194304. succ
+07.03 SEEK_DATA expected 40960 or 0, got 0. succ
+07.04 SEEK_DATA expected 40960 or 1, got 1. succ
+
+08. Test file with unwritten extents, only have unwritten pages
+08.01 SEEK_HOLE expected 0 or 4194304, got 4194304. succ
+08.02 SEEK_HOLE expected 1 or 4194304, got 4194304. succ
+08.03 SEEK_DATA expected 40960 or 0, got 0. succ
+08.04 SEEK_DATA expected 40960 or 1, got 1. succ
+
+09. Test file with unwritten extents, have both dirty && unwritten pages
+09.01 SEEK_HOLE expected 0 or 8388608, got 8388608. succ
+09.02 SEEK_HOLE expected 1 or 8388608, got 8388608. succ
+09.03 SEEK_DATA expected 40960 or 0, got 0. succ
+09.04 SEEK_DATA expected 40960 or 1, got 1. succ
+
--- /dev/null
+/*
+ * Copyright (C) 2011 Oracle. All rights reserved.
+ * Copyright (C) 2011 Red Hat. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * 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 021110-1307, USA.
+ */
+
+#define _XOPEN_SOURCE 500
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/vfs.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#ifndef SEEK_DATA
+#define SEEK_DATA 3
+#define SEEK_HOLE 4
+#endif
+
+static blksize_t alloc_size;
+int default_behavior = 0;
+char *base_file_path;
+
+static void get_file_system(int fd)
+{
+ struct statfs buf;
+
+ if (!fstatfs(fd, &buf))
+ fprintf(stdout, "File system magic#: 0x%lx\n", buf.f_type);
+}
+
+static int get_io_sizes(int fd)
+{
+ struct stat buf;
+ int ret;
+
+ ret = fstat(fd, &buf);
+ if (ret)
+ fprintf(stderr, " ERROR %d: Failed to find io blocksize\n",
+ errno);
+
+ /* st_blksize is typically also the allocation size */
+ alloc_size = buf.st_blksize;
+ fprintf(stdout, "Allocation size: %ld\n", alloc_size);
+
+ return ret;
+}
+
+#define do_free(x) do { if(x) free(x); } while(0);
+
+static void *do_malloc(size_t size)
+{
+ void *buf;
+
+ buf = malloc(size);
+ if (!buf)
+ fprintf(stderr, " ERROR: Unable to allocate %ld bytes\n",
+ (long)size);
+
+ return buf;
+}
+
+static int do_truncate(int fd, off_t length)
+{
+ int ret;
+
+ ret = ftruncate(fd, length);
+ if (ret)
+ fprintf(stderr, " ERROR %d: Failed to extend file "
+ "to %ld bytes\n", errno, (long)length);
+ return ret;
+}
+
+static int do_fallocate(int fd, off_t offset, off_t length, int mode)
+{
+ int ret;
+
+ ret = fallocate(fd, mode, offset, length);
+ if (ret)
+ fprintf(stderr, " ERROR %d: Failed to preallocate "
+ "space to %ld bytes\n", errno, (long) length);
+
+ return ret;
+}
+
+/*
+ * Synchnorize all dirty pages in the file range starting from
+ * offset to nbytes length.
+ */
+static int do_sync_dirty_pages(int fd, off64_t offset, off64_t nbytes)
+{
+ int ret;
+
+ ret = sync_file_range(fd, offset, nbytes, SYNC_FILE_RANGE_WRITE);
+ if (ret)
+ fprintf(stderr, " ERROR %d: Failed to sync out dirty "
+ "pages\n", errno);
+
+ return ret;
+}
+
+static ssize_t do_pwrite(int fd, const void *buf, size_t count, off_t offset)
+{
+ ssize_t ret, written = 0;
+
+ while (count > written) {
+ ret = pwrite(fd, buf + written, count - written, offset + written);
+ if (ret < 0) {
+ fprintf(stderr, " ERROR %d: Failed to write %ld "
+ "bytes\n", errno, (long)count);
+ return ret;
+ }
+ written += ret;
+ }
+
+ return 0;
+}
+
+#define do_close(x) do { if ((x) > -1) close(x); } while(0);
+
+static int do_create(const char *filename)
+{
+ int fd;
+
+ fd = open(filename, O_RDWR|O_CREAT|O_TRUNC, 0644);
+ if (fd < 0)
+ fprintf(stderr, " ERROR %d: Failed to create file '%s'\n",
+ errno, filename);
+
+ return fd;
+}
+
+static int do_lseek(int testnum, int subtest, int fd, int filsz, int origin,
+ off_t set, off_t exp)
+{
+ off_t pos, exp2;
+ int x, ret;
+
+ assert(!(origin != SEEK_HOLE && origin != SEEK_DATA));
+
+ /*
+ * The file pointer can be set to different values depending
+ * on the implementation. For SEEK_HOLE, EOF could be a valid
+ * value. For SEEK_DATA, supplied offset could be the valid
+ * value.
+ */
+ exp2 = exp;
+ if (origin == SEEK_HOLE && exp2 != -1)
+ exp2 = filsz;
+ if (origin == SEEK_DATA && default_behavior && set < filsz)
+ exp2 = set;
+
+ pos = lseek(fd, set, origin);
+
+ if (pos == -1 && exp == -1) {
+ x = fprintf(stdout, "%02d.%02d %s expected -1 with errno %d, got %d. ",
+ testnum, subtest,
+ (origin == SEEK_HOLE) ? "SEEK_HOLE" : "SEEK_DATA",
+ -ENXIO, -errno);
+ ret = !(errno == ENXIO);
+ } else {
+
+ x = fprintf(stdout, "%02d.%02d %s expected %ld or %ld, got %ld. ",
+ testnum, subtest,
+ (origin == SEEK_HOLE) ? "SEEK_HOLE" : "SEEK_DATA",
+ (long)exp, (long)exp2, (long)pos);
+ ret = !(pos == exp || pos == exp2);
+ }
+
+ fprintf(stdout, "%*s\n", (70 - x), ret ? "FAIL" : "succ");
+
+ return ret;
+}
+
+/*
+ * test file with unwritten extents, have both dirty and
+ * writeback pages in page cache.
+ */
+static int test09(int fd, int testnum)
+{
+ int ret = 0;
+ char *buf = NULL;
+ int bufsz = alloc_size;
+ int filsz = 8 << 20;
+
+ /*
+ * HOLE - unwritten DATA in dirty page - HOLE -
+ * unwritten DATA in writeback page
+ */
+
+ /* Each unit is bufsz */
+ buf = do_malloc(bufsz);
+ if (!buf)
+ goto out;
+ memset(buf, 'a', bufsz);
+
+ /* preallocate 8M space to file */
+ ret = do_fallocate(fd, 0, filsz, 0);
+ if (ret < 0)
+ goto out;
+
+ ret = do_pwrite(fd, buf, bufsz, bufsz * 10);
+ if (!ret) {
+ ret = do_pwrite(fd, buf, bufsz, bufsz * 100);
+ if (ret)
+ goto out;
+ }
+
+ /*
+ * Sync out dirty pages from bufsz * 100, this will convert
+ * the dirty page to writeback.
+ */
+ ret = do_sync_dirty_pages(fd, bufsz * 100, 0);
+ if (ret)
+ goto out;
+
+ /* offset at the beginning */
+ ret += do_lseek(testnum, 1, fd, filsz, SEEK_HOLE, 0, 0);
+ ret += do_lseek(testnum, 2, fd, filsz, SEEK_HOLE, 1, 1);
+ ret += do_lseek(testnum, 3, fd, filsz, SEEK_DATA, 0, bufsz * 10);
+ ret += do_lseek(testnum, 4, fd, filsz, SEEK_DATA, 1, bufsz * 10);
+
+out:
+ do_free(buf);
+ return ret;
+}
+
+/* test file with unwritten extent, only have writeback page */
+static int test08(int fd, int testnum)
+{
+ int ret = 0;
+ char *buf = NULL;
+ int bufsz = alloc_size;
+ int filsz = 4 << 20;
+
+ /* HOLE - unwritten DATA in writeback page */
+ /* Each unit is bufsz */
+ buf = do_malloc(bufsz);
+ if (!buf)
+ goto out;
+ memset(buf, 'a', bufsz);
+
+ /* preallocate 4M space to file */
+ ret = do_fallocate(fd, 0, filsz, 0);
+ if (ret < 0)
+ goto out;
+
+ ret = do_pwrite(fd, buf, bufsz, bufsz * 10);
+ if (ret)
+ goto out;
+
+ /* Sync out all file */
+ ret = do_sync_dirty_pages(fd, 0, 0);
+ if (ret)
+ goto out;
+
+ /* offset at the beginning */
+ ret += do_lseek(testnum, 1, fd, filsz, SEEK_HOLE, 0, 0);
+ ret += do_lseek(testnum, 2, fd, filsz, SEEK_HOLE, 1, 1);
+ ret += do_lseek(testnum, 3, fd, filsz, SEEK_DATA, 0, bufsz * 10);
+ ret += do_lseek(testnum, 4, fd, filsz, SEEK_DATA, 1, bufsz * 10);
+
+out:
+ do_free(buf);
+ return ret;
+}
+
+/*
+ * test file with unwritten extents, only have dirty pages
+ * in page cache.
+ */
+static int test07(int fd, int testnum)
+{
+ int ret = 0;
+ char *buf = NULL;
+ int bufsz = alloc_size;
+ int filsz = 4 << 20;
+
+ /* HOLE - unwritten DATA in dirty page */
+ /* Each unit is bufsz */
+ buf = do_malloc(bufsz);
+ if (!buf)
+ goto out;
+ memset(buf, 'a', bufsz);
+
+ /* preallocate 4M space to file */
+ ret = do_fallocate(fd, 0, filsz, 0);
+ if (ret < 0)
+ goto out;
+
+ ret = do_pwrite(fd, buf, bufsz, bufsz * 10);
+ if (ret)
+ goto out;
+
+ /* offset at the beginning */
+ ret += do_lseek(testnum, 1, fd, filsz, SEEK_HOLE, 0, 0);
+ ret += do_lseek(testnum, 2, fd, filsz, SEEK_HOLE, 1, 1);
+ ret += do_lseek(testnum, 3, fd, filsz, SEEK_DATA, 0, bufsz * 10);
+ ret += do_lseek(testnum, 4, fd, filsz, SEEK_DATA, 1, bufsz * 10);
+
+out:
+ do_free(buf);
+ return ret;
+}
+
+/* test hole data hole data */
+static int test06(int fd, int testnum)
+{
+ int ret = -1;
+ char *buf = NULL;
+ int bufsz = alloc_size;
+ int filsz = bufsz * 4;
+ int off;
+
+ /* HOLE - DATA - HOLE - DATA */
+ /* Each unit is bufsz */
+
+ buf = do_malloc(bufsz);
+ if (!buf)
+ goto out;
+
+ memset(buf, 'a', bufsz);
+
+ ret = do_pwrite(fd, buf, bufsz, bufsz);
+ if (!ret)
+ do_pwrite(fd, buf, bufsz, bufsz * 3);
+ if (ret)
+ goto out;
+
+ /* offset at the beginning */
+ ret += do_lseek(testnum, 1, fd, filsz, SEEK_HOLE, 0, 0);
+ ret += do_lseek(testnum, 2, fd, filsz, SEEK_HOLE, 1, 1);
+ ret += do_lseek(testnum, 3, fd, filsz, SEEK_DATA, 0, bufsz);
+ ret += do_lseek(testnum, 4, fd, filsz, SEEK_DATA, 1, bufsz);
+
+ /* offset around first hole-data boundary */
+ off = bufsz;
+ ret += do_lseek(testnum, 5, fd, filsz, SEEK_HOLE, off - 1, off - 1);
+ ret += do_lseek(testnum, 6, fd, filsz, SEEK_DATA, off - 1, off);
+ ret += do_lseek(testnum, 7, fd, filsz, SEEK_HOLE, off, bufsz * 2);
+ ret += do_lseek(testnum, 8, fd, filsz, SEEK_DATA, off, off);
+ ret += do_lseek(testnum, 9, fd, filsz, SEEK_HOLE, off + 1, bufsz * 2);
+ ret += do_lseek(testnum, 10, fd, filsz, SEEK_DATA, off + 1, off + 1);
+
+ /* offset around data-hole boundary */
+ off = bufsz * 2;
+ ret += do_lseek(testnum, 11, fd, filsz, SEEK_HOLE, off - 1, off);
+ ret += do_lseek(testnum, 12, fd, filsz, SEEK_DATA, off - 1, off - 1);
+ ret += do_lseek(testnum, 13, fd, filsz, SEEK_HOLE, off, off);
+ ret += do_lseek(testnum, 14, fd, filsz, SEEK_DATA, off, bufsz * 3);
+ ret += do_lseek(testnum, 15, fd, filsz, SEEK_HOLE, off + 1, off + 1);
+ ret += do_lseek(testnum, 16, fd, filsz, SEEK_DATA, off + 1, bufsz * 3);
+
+ /* offset around second hole-data boundary */
+ off = bufsz * 3;
+ ret += do_lseek(testnum, 17, fd, filsz, SEEK_HOLE, off - 1, off - 1);
+ ret += do_lseek(testnum, 18, fd, filsz, SEEK_DATA, off - 1, off);
+ ret += do_lseek(testnum, 19, fd, filsz, SEEK_HOLE, off, filsz);
+ ret += do_lseek(testnum, 20, fd, filsz, SEEK_DATA, off, off);
+ ret += do_lseek(testnum, 21, fd, filsz, SEEK_HOLE, off + 1, filsz);
+ ret += do_lseek(testnum, 22, fd, filsz, SEEK_DATA, off + 1, off + 1);
+
+ /* offset around the end of file */
+ off = filsz;
+ ret += do_lseek(testnum, 23, fd, filsz, SEEK_HOLE, off - 1, filsz);
+ ret += do_lseek(testnum, 24, fd, filsz, SEEK_DATA, off - 1, filsz - 1);
+ ret += do_lseek(testnum, 25, fd, filsz, SEEK_HOLE, off, -1);
+ ret += do_lseek(testnum, 26, fd, filsz, SEEK_DATA, off, -1);
+ ret += do_lseek(testnum, 27, fd, filsz, SEEK_HOLE, off + 1, -1);
+ ret += do_lseek(testnum, 28, fd, filsz, SEEK_DATA, off + 1, -1);
+
+out:
+ do_free(buf);
+ return ret;
+}
+
+/* test file with data at the beginning and a hole at the end */
+static int test05(int fd, int testnum)
+{
+ int ret = -1;
+ char *buf = NULL;
+ int bufsz = alloc_size;
+ int filsz = bufsz * 4;
+
+ /* |- DATA -|- HOLE -|- HOLE -|- HOLE -| */
+
+ buf = do_malloc(bufsz);
+ if (!buf)
+ goto out;
+ memset(buf, 'a', bufsz);
+
+ ret = do_truncate(fd, filsz);
+ if (!ret)
+ ret = do_pwrite(fd, buf, bufsz, 0);
+ if (ret)
+ goto out;
+
+ /* offset at the beginning */
+
+ ret += do_lseek(testnum, 1, fd, filsz, SEEK_HOLE, 0, bufsz);
+ ret += do_lseek(testnum, 2, fd, filsz, SEEK_HOLE, 1, bufsz);
+
+ ret += do_lseek(testnum, 3, fd, filsz, SEEK_DATA, 0, 0);
+ ret += do_lseek(testnum, 4, fd, filsz, SEEK_DATA, 1, 1);
+
+ /* offset around data-hole boundary */
+ ret += do_lseek(testnum, 5, fd, filsz, SEEK_HOLE, bufsz - 1, bufsz);
+ ret += do_lseek(testnum, 6, fd, filsz, SEEK_DATA, bufsz - 1, bufsz - 1);
+
+ ret += do_lseek(testnum, 7, fd, filsz, SEEK_HOLE, bufsz, bufsz);
+ ret += do_lseek(testnum, 8, fd, filsz, SEEK_DATA, bufsz, -1);
+ ret += do_lseek(testnum, 9, fd, filsz, SEEK_HOLE, bufsz + 1, bufsz + 1);
+ ret += do_lseek(testnum, 10, fd, filsz, SEEK_DATA, bufsz + 1, -1);
+
+ /* offset around eof */
+ ret += do_lseek(testnum, 11, fd, filsz, SEEK_HOLE, filsz - 1, filsz - 1);
+ ret += do_lseek(testnum, 12, fd, filsz, SEEK_DATA, filsz - 1, -1);
+ ret += do_lseek(testnum, 13, fd, filsz, SEEK_HOLE, filsz, -1);
+ ret += do_lseek(testnum, 14, fd, filsz, SEEK_DATA, filsz, -1);
+ ret += do_lseek(testnum, 15, fd, filsz, SEEK_HOLE, filsz + 1, -1);
+ ret += do_lseek(testnum, 16, fd, filsz, SEEK_DATA, filsz + 1, -1);
+out:
+ do_free(buf);
+ return ret;
+}
+/* test hole begin and data end */
+static int test04(int fd, int testnum)
+{
+ int ret;
+ char *buf = "ABCDEFGH";
+ int bufsz, holsz, filsz;
+
+ bufsz = strlen(buf);
+ holsz = alloc_size * 2;
+ filsz = holsz + bufsz;
+
+ /* |- HOLE -|- HOLE -|- DATA -| */
+
+ ret = do_pwrite(fd, buf, bufsz, holsz);
+ if (ret)
+ goto out;
+
+ /* offset at the beginning */
+ ret += do_lseek(testnum, 1, fd, filsz, SEEK_HOLE, 0, 0);
+ ret += do_lseek(testnum, 2, fd, filsz, SEEK_HOLE, 1, 1);
+ ret += do_lseek(testnum, 3, fd, filsz, SEEK_DATA, 0, holsz);
+ ret += do_lseek(testnum, 4, fd, filsz, SEEK_DATA, 1, holsz);
+ /* offset around hole-data boundary */
+ ret += do_lseek(testnum, 5, fd, filsz, SEEK_HOLE, holsz - 1, holsz - 1);
+ ret += do_lseek(testnum, 6, fd, filsz, SEEK_DATA, holsz - 1, holsz);
+ ret += do_lseek(testnum, 7, fd, filsz, SEEK_HOLE, holsz, filsz);
+ ret += do_lseek(testnum, 8, fd, filsz, SEEK_DATA, holsz, holsz);
+ ret += do_lseek(testnum, 9, fd, filsz, SEEK_HOLE, holsz + 1, filsz);
+ ret += do_lseek(testnum, 10, fd, filsz, SEEK_DATA, holsz + 1, holsz + 1);
+
+ /* offset around eof */
+ ret += do_lseek(testnum, 11, fd, filsz, SEEK_HOLE, filsz - 1, filsz);
+ ret += do_lseek(testnum, 12, fd, filsz, SEEK_DATA, filsz - 1, filsz - 1);
+ ret += do_lseek(testnum, 13, fd, filsz, SEEK_HOLE, filsz, -1);
+ ret += do_lseek(testnum, 14, fd, filsz, SEEK_DATA, filsz, -1);
+ ret += do_lseek(testnum, 15, fd, filsz, SEEK_HOLE, filsz + 1, -1);
+ ret += do_lseek(testnum, 16, fd, filsz, SEEK_DATA, filsz + 1, -1);
+out:
+ return ret;
+}
+
+/* test a larger full file */
+static int test03(int fd, int testnum)
+{
+ char *buf = NULL;
+ int bufsz = alloc_size * 2 + 100;
+ int filsz = bufsz;
+ int ret = -1;
+
+ buf = do_malloc(bufsz);
+ if (!buf)
+ goto out;
+ memset(buf, 'a', bufsz);
+
+ ret = do_pwrite(fd, buf, bufsz, 0);
+ if (ret)
+ goto out;
+
+ /* offset at the beginning */
+ ret += do_lseek(testnum, 1, fd, filsz, SEEK_HOLE, 0, bufsz);
+ ret += do_lseek(testnum, 2, fd, filsz, SEEK_HOLE, 1, bufsz);
+ ret += do_lseek(testnum, 3, fd, filsz, SEEK_DATA, 0, 0);
+ ret += do_lseek(testnum, 4, fd, filsz, SEEK_DATA, 1, 1);
+
+ /* offset around eof */
+ ret += do_lseek(testnum, 5, fd, filsz, SEEK_HOLE, bufsz - 1, bufsz);
+ ret += do_lseek(testnum, 6, fd, filsz, SEEK_DATA, bufsz - 1, bufsz - 1);
+ ret += do_lseek(testnum, 7, fd, filsz, SEEK_HOLE, bufsz, -1);
+ ret += do_lseek(testnum, 8, fd, filsz, SEEK_DATA, bufsz, -1);
+ ret += do_lseek(testnum, 9, fd, filsz, SEEK_HOLE, bufsz + 1, -1);
+ ret += do_lseek(testnum, 10, fd, filsz, SEEK_DATA, bufsz + 1, -1);
+
+out:
+ do_free(buf);
+ return ret;
+}
+
+/* test tiny full file */
+static int test02(int fd, int testnum)
+{
+ int ret;
+ char buf[] = "ABCDEFGH";
+ int bufsz, filsz;
+
+ bufsz = strlen(buf);
+ filsz = bufsz;
+
+ /* |- DATA -| */
+
+ ret = do_pwrite(fd, buf, bufsz, 0);
+ if (ret)
+ goto out;
+
+ ret += do_lseek(testnum, 1, fd, filsz, SEEK_HOLE, 0, filsz);
+ ret += do_lseek(testnum, 2, fd, filsz, SEEK_DATA, 0, 0);
+ ret += do_lseek(testnum, 3, fd, filsz, SEEK_DATA, 1, 1);
+ ret += do_lseek(testnum, 4, fd, filsz, SEEK_HOLE, bufsz - 1, filsz);
+ ret += do_lseek(testnum, 5, fd, filsz, SEEK_DATA, bufsz - 1, bufsz - 1);
+ ret += do_lseek(testnum, 6, fd, filsz, SEEK_HOLE, bufsz, -1);
+ ret += do_lseek(testnum, 7, fd, filsz, SEEK_DATA, bufsz, -1);
+ ret += do_lseek(testnum, 8, fd, filsz, SEEK_HOLE, bufsz + 1, -1);
+ ret += do_lseek(testnum, 9, fd, filsz, SEEK_DATA, bufsz + 1, -1);
+
+out:
+ return ret;
+}
+
+/* test empty file */
+static int test01(int fd, int testnum)
+{
+ int ret = 0;
+
+ ret += do_lseek(testnum, 1, fd, 0, SEEK_DATA, 0, -1);
+ ret += do_lseek(testnum, 2, fd, 0, SEEK_HOLE, 0, -1);
+ ret += do_lseek(testnum, 3, fd, 0, SEEK_HOLE, 1, -1);
+
+ return ret;
+}
+
+struct testrec {
+ int test_num;
+ int (*test_func)(int fd, int testnum);
+ char *test_desc;
+};
+
+struct testrec seek_tests[] = {
+ { 1, test01, "Test empty file" },
+ { 2, test02, "Test a tiny full file" },
+ { 3, test03, "Test a larger full file" },
+ { 4, test04, "Test file hole at beg, data at end" },
+ { 5, test05, "Test file data at beg, hole at end" },
+ { 6, test06, "Test file hole data hole data" },
+ { 7, test07, "Test file with unwritten extents, only have dirty pages" },
+ { 8, test08, "Test file with unwritten extents, only have unwritten pages" },
+ { 9, test09, "Test file with unwritten extents, have both dirty && unwritten pages" },
+};
+
+static int run_test(struct testrec *tr)
+{
+ int ret = 0, fd = -1;
+ char filename[255];
+
+ snprintf(filename, sizeof(filename), "%s%02d", base_file_path, tr->test_num);
+
+ fd = do_create(filename);
+ if (fd > -1) {
+ printf("%02d. %-50s\n", tr->test_num, tr->test_desc);
+ ret = tr->test_func(fd, tr->test_num);
+ printf("\n");
+ }
+
+ do_close(fd);
+ return ret;
+}
+
+static int test_basic_support(void)
+{
+ int ret = -1, fd;
+ off_t pos;
+ char *buf = NULL;
+ int bufsz, filsz;
+
+ fd = do_create(base_file_path);
+ if (fd == -1)
+ goto out;
+
+ get_file_system(fd);
+
+ ret = get_io_sizes(fd);
+ if (ret)
+ goto out;
+
+ bufsz = alloc_size * 2;
+ filsz = bufsz * 2;
+
+ buf = do_malloc(bufsz);
+ if (!buf)
+ goto out;
+ memset(buf, 'a', bufsz);
+
+ /* File with 2 allocated blocks.... */
+ ret = do_pwrite(fd, buf, bufsz, 0);
+ if (ret)
+ goto out;
+
+ /* followed by a hole... */
+ ret = do_truncate(fd, filsz);
+ if (ret)
+ goto out;
+
+ /* Is SEEK_DATA and SEEK_HOLE supported in the kernel? */
+ pos = lseek(fd, 0, SEEK_DATA);
+ if (pos != -1)
+ pos = lseek(fd, 0, SEEK_HOLE);
+ if (pos == -1) {
+ fprintf(stderr, "Kernel does not support llseek(2) extensions "
+ "SEEK_HOLE and/or SEEK_DATA. Aborting.\n");
+ ret = -1;
+ goto out;
+ }
+
+ if (pos == filsz) {
+ default_behavior = 1;
+ fprintf(stderr, "File system supports the default behavior.\n");
+ }
+
+ printf("\n");
+
+out:
+ do_free(buf);
+ do_close(fd);
+ return ret;
+}
+
+int main(int argc, char **argv)
+{
+ int ret = -1;
+ int i = 0;
+ int numtests = sizeof(seek_tests) / sizeof(struct testrec);
+
+ if (argc != 2) {
+ fprintf(stdout, "Usage: %s base_file_path\n", argv[0]);
+ return ret;
+ }
+
+ base_file_path = (char *)strdup(argv[1]);
+
+ ret = test_basic_support();
+ if (ret)
+ goto out;
+
+ for (i = 0; i < numtests; ++i) {
+ if (ret)
+ goto out;
+ run_test(&seek_tests[i]);
+ }
+
+out:
+ free(base_file_path);
+ return ret;
+}
projects / xfstests-dev.git / commitdiff