* Copyright (C) 1996 Theodore Ts'o.
*
* %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
* %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#include <string.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
-#include <stdlib.h>
#include <fcntl.h>
#include <time.h>
#if HAVE_SYS_STAT_H
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
-#if HAVE_ERRNO_H
-#include <errno.h>
+#ifdef HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#else
+#define PR_GET_DUMPABLE 3
+#endif
+#if (!defined(HAVE_PRCTL) && defined(linux))
+#include <sys/syscall.h>
#endif
-#include "et/com_err.h"
-#include "ext2fs/ext2_err.h"
-#include "ext2fs/ext2_io.h"
+#include "ext2_fs.h"
+#include "ext2fs.h"
/*
* For checking structure magic numbers...
#define EXT2_CHECK_MAGIC(struct, code) \
if ((struct)->magic != (code)) return (code)
-
+
struct test_private_data {
int magic;
io_channel real;
+ int flags;
+ FILE *outfile;
+ unsigned long block;
+ int read_abort_count, write_abort_count;
void (*read_blk)(unsigned long block, int count, errcode_t err);
void (*write_blk)(unsigned long block, int count, errcode_t err);
void (*set_blksize)(int blksize, errcode_t err);
+ void (*write_byte)(unsigned long block, int count, errcode_t err);
+ void (*read_blk64)(unsigned long long block, int count, errcode_t err);
+ void (*write_blk64)(unsigned long long block, int count, errcode_t err);
};
-static errcode_t test_open(const char *name, int flags, io_channel *channel);
-static errcode_t test_close(io_channel channel);
-static errcode_t test_set_blksize(io_channel channel, int blksize);
-static errcode_t test_read_blk(io_channel channel, unsigned long block,
- int count, void *data);
-static errcode_t test_write_blk(io_channel channel, unsigned long block,
- int count, const void *data);
-static errcode_t test_flush(io_channel channel);
-
-static struct struct_io_manager struct_test_manager = {
- EXT2_ET_MAGIC_IO_MANAGER,
- "Test I/O Manager",
- test_open,
- test_close,
- test_set_blksize,
- test_read_blk,
- test_write_blk,
- test_flush
-};
-
-io_manager test_io_manager = &struct_test_manager;
-
/*
* These global variable can be set by the test program as
* necessary *before* calling test_open
(unsigned long block, int count, errcode_t err) = 0;
void (*test_io_cb_write_blk)
(unsigned long block, int count, errcode_t err) = 0;
+void (*test_io_cb_read_blk64)
+ (unsigned long long block, int count, errcode_t err) = 0;
+void (*test_io_cb_write_blk64)
+ (unsigned long long block, int count, errcode_t err) = 0;
void (*test_io_cb_set_blksize)
(int blksize, errcode_t err) = 0;
+void (*test_io_cb_write_byte)
+ (unsigned long block, int count, errcode_t err) = 0;
+
+/*
+ * Test flags
+ */
+#define TEST_FLAG_READ 0x01
+#define TEST_FLAG_WRITE 0x02
+#define TEST_FLAG_SET_BLKSIZE 0x04
+#define TEST_FLAG_FLUSH 0x08
+#define TEST_FLAG_DUMP 0x10
+#define TEST_FLAG_SET_OPTION 0x20
+#define TEST_FLAG_DISCARD 0x40
+#define TEST_FLAG_READAHEAD 0x80
+#define TEST_FLAG_ZEROOUT 0x100
+
+static void test_dump_block(io_channel channel,
+ struct test_private_data *data,
+ unsigned long block, const void *buf)
+{
+ const unsigned char *cp;
+ FILE *f = data->outfile;
+ int i;
+ unsigned long cksum = 0;
+
+ for (i=0, cp = buf; i < channel->block_size; i++, cp++) {
+ cksum += *cp;
+ }
+ fprintf(f, "Contents of block %lu, checksum %08lu: \n", block, cksum);
+ for (i=0, cp = buf; i < channel->block_size; i++, cp++) {
+ if ((i % 16) == 0)
+ fprintf(f, "%04x: ", i);
+ fprintf(f, "%02x%c", *cp, ((i % 16) == 15) ? '\n' : ' ');
+ }
+}
+
+/*
+ * Flush data buffers to disk.
+ */
+static errcode_t test_flush(io_channel channel)
+{
+ struct test_private_data *data;
+ errcode_t retval = 0;
+
+ EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
+ data = (struct test_private_data *)channel->private_data;
+ EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
+
+ if (data->real)
+ retval = io_channel_flush(data->real);
+
+ if (data->flags & TEST_FLAG_FLUSH)
+ fprintf(data->outfile, "Test_io: flush() returned %s\n",
+ retval ? error_message(retval) : "OK");
+
+ return retval;
+}
+
+static void test_abort(io_channel channel, unsigned long block)
+{
+ struct test_private_data *data;
+ FILE *f;
+
+ data = (struct test_private_data *) channel->private_data;
+ f = data->outfile;
+ test_flush(channel);
+
+ fprintf(f, "Aborting due to I/O to block %lu\n", block);
+ fflush(f);
+ abort();
+}
+
+static char *safe_getenv(const char *arg)
+{
+#if !defined(_WIN32)
+ if ((getuid() != geteuid()) || (getgid() != getegid()))
+ return NULL;
+#endif
+#if HAVE_PRCTL
+ if (prctl(PR_GET_DUMPABLE, 0, 0, 0, 0) == 0)
+ return NULL;
+#else
+#if (defined(linux) && defined(SYS_prctl))
+ if (syscall(SYS_prctl, PR_GET_DUMPABLE, 0, 0, 0, 0) == 0)
+ return NULL;
+#endif
+#endif
+
+#if defined(HAVE_SECURE_GETENV)
+ return secure_getenv(arg);
+#elif defined(HAVE___SECURE_GETENV)
+ return __secure_getenv(arg);
+#else
+ return getenv(arg);
+#endif
+}
static errcode_t test_open(const char *name, int flags, io_channel *channel)
{
io_channel io = NULL;
struct test_private_data *data = NULL;
errcode_t retval;
+ char *value;
if (name == 0)
return EXT2_ET_BAD_DEVICE_NAME;
- io = (io_channel) malloc(sizeof(struct struct_io_channel));
- if (!io)
- return ENOMEM;
+ retval = ext2fs_get_mem(sizeof(struct struct_io_channel), &io);
+ if (retval)
+ goto cleanup;
memset(io, 0, sizeof(struct struct_io_channel));
io->magic = EXT2_ET_MAGIC_IO_CHANNEL;
- data = (struct test_private_data *)
- malloc(sizeof(struct test_private_data));
- if (!data) {
- retval = ENOMEM;
+ retval = ext2fs_get_mem(sizeof(struct test_private_data), &data);
+ if (retval)
goto cleanup;
- }
io->manager = test_io_manager;
- io->name = malloc(strlen(name)+1);
- if (!io->name) {
- retval = ENOMEM;
+ retval = ext2fs_get_mem(strlen(name)+1, &io->name);
+ if (retval)
goto cleanup;
- }
+
strcpy(io->name, name);
io->private_data = data;
io->block_size = 1024;
&data->real);
if (retval)
goto cleanup;
- } else
+ } else {
data->real = 0;
- data->read_blk = test_io_cb_read_blk;
- data->write_blk = test_io_cb_write_blk;
- data->set_blksize = test_io_cb_set_blksize;
-
+ }
+ data->read_blk = test_io_cb_read_blk;
+ data->write_blk = test_io_cb_write_blk;
+ data->set_blksize = test_io_cb_set_blksize;
+ data->write_byte = test_io_cb_write_byte;
+ data->read_blk64 = test_io_cb_read_blk64;
+ data->write_blk64 = test_io_cb_write_blk64;
+
+ data->outfile = NULL;
+ if ((value = safe_getenv("TEST_IO_LOGFILE")) != NULL)
+ data->outfile = fopen(value, "w");
+ if (!data->outfile)
+ data->outfile = stderr;
+
+ data->flags = 0;
+ if ((value = safe_getenv("TEST_IO_FLAGS")) != NULL)
+ data->flags = strtoul(value, NULL, 0);
+
+ data->block = 0;
+ if ((value = safe_getenv("TEST_IO_BLOCK")) != NULL)
+ data->block = strtoul(value, NULL, 0);
+
+ data->read_abort_count = 0;
+ if ((value = safe_getenv("TEST_IO_READ_ABORT")) != NULL)
+ data->read_abort_count = strtoul(value, NULL, 0);
+
+ data->write_abort_count = 0;
+ if ((value = safe_getenv("TEST_IO_WRITE_ABORT")) != NULL)
+ data->write_abort_count = strtoul(value, NULL, 0);
+
+ if (data->real)
+ io->align = data->real->align;
+
*channel = io;
return 0;
cleanup:
if (io)
- free(io);
+ ext2fs_free_mem(&io);
if (data)
- free(data);
+ ext2fs_free_mem(&data);
return retval;
}
if (--channel->refcount > 0)
return 0;
-
+
if (data->real)
retval = io_channel_close(data->real);
-
- if (channel->private_data)
- free(channel->private_data);
+
+ if (data->outfile && data->outfile != stderr)
+ fclose(data->outfile);
+
+ ext2fs_free_mem(&channel->private_data);
if (channel->name)
- free(channel->name);
- free(channel);
+ ext2fs_free_mem(&channel->name);
+ ext2fs_free_mem(&channel);
return retval;
}
data = (struct test_private_data *) channel->private_data;
EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
- if (data->real)
+ if (data->real) {
retval = io_channel_set_blksize(data->real, blksize);
+ channel->align = data->real->align;
+ }
if (data->set_blksize)
data->set_blksize(blksize, retval);
- else
- printf("Test_io: set_blksize(%d) returned %s\n",
- blksize, retval ? error_message(retval) : "OK");
+ if (data->flags & TEST_FLAG_SET_BLKSIZE)
+ fprintf(data->outfile,
+ "Test_io: set_blksize(%d) returned %s\n",
+ blksize, retval ? error_message(retval) : "OK");
+ channel->block_size = blksize;
return retval;
}
retval = io_channel_read_blk(data->real, block, count, buf);
if (data->read_blk)
data->read_blk(block, count, retval);
- else
- printf("Test_io: read_blk(%lu, %d) returned %s\n",
- block, count, retval ? error_message(retval) : "OK");
+ if (data->flags & TEST_FLAG_READ)
+ fprintf(data->outfile,
+ "Test_io: read_blk(%lu, %d) returned %s\n",
+ block, count, retval ? error_message(retval) : "OK");
+ if (data->block && data->block == block) {
+ if (data->flags & TEST_FLAG_DUMP)
+ test_dump_block(channel, data, block, buf);
+ if (--data->read_abort_count == 0)
+ test_abort(channel, block);
+ }
return retval;
}
retval = io_channel_write_blk(data->real, block, count, buf);
if (data->write_blk)
data->write_blk(block, count, retval);
- else
- printf("Test_io: write_blk(%lu, %d) returned %s\n",
- block, count, retval ? error_message(retval) : "OK");
+ if (data->flags & TEST_FLAG_WRITE)
+ fprintf(data->outfile,
+ "Test_io: write_blk(%lu, %d) returned %s\n",
+ block, count, retval ? error_message(retval) : "OK");
+ if (data->block && data->block == block) {
+ if (data->flags & TEST_FLAG_DUMP)
+ test_dump_block(channel, data, block, buf);
+ if (--data->write_abort_count == 0)
+ test_abort(channel, block);
+ }
return retval;
}
-/*
- * Flush data buffers to disk.
- */
-static errcode_t test_flush(io_channel channel)
+static errcode_t test_read_blk64(io_channel channel, unsigned long long block,
+ int count, void *buf)
{
struct test_private_data *data;
-
+ errcode_t retval = 0;
+
EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
data = (struct test_private_data *) channel->private_data;
EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
if (data->real)
- return io_channel_flush(data->real);
- return 0;
+ retval = io_channel_read_blk64(data->real, block, count, buf);
+ if (data->read_blk64)
+ data->read_blk64(block, count, retval);
+ if (data->flags & TEST_FLAG_READ)
+ fprintf(data->outfile,
+ "Test_io: read_blk64(%llu, %d) returned %s\n",
+ block, count, retval ? error_message(retval) : "OK");
+ if (data->block && data->block == block) {
+ if (data->flags & TEST_FLAG_DUMP)
+ test_dump_block(channel, data, block, buf);
+ if (--data->read_abort_count == 0)
+ test_abort(channel, block);
+ }
+ return retval;
}
+static errcode_t test_write_blk64(io_channel channel, unsigned long long block,
+ int count, const void *buf)
+{
+ struct test_private_data *data;
+ errcode_t retval = 0;
+
+ EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
+ data = (struct test_private_data *) channel->private_data;
+ EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
+
+ if (data->real)
+ retval = io_channel_write_blk64(data->real, block, count, buf);
+ if (data->write_blk64)
+ data->write_blk64(block, count, retval);
+ if (data->flags & TEST_FLAG_WRITE)
+ fprintf(data->outfile,
+ "Test_io: write_blk64(%llu, %d) returned %s\n",
+ block, count, retval ? error_message(retval) : "OK");
+ if (data->block && data->block == block) {
+ if (data->flags & TEST_FLAG_DUMP)
+ test_dump_block(channel, data, block, buf);
+ if (--data->write_abort_count == 0)
+ test_abort(channel, block);
+ }
+ return retval;
+}
+
+static errcode_t test_write_byte(io_channel channel, unsigned long offset,
+ int count, const void *buf)
+{
+ struct test_private_data *data;
+ errcode_t retval = 0;
+
+ EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
+ data = (struct test_private_data *) channel->private_data;
+ EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
+
+ if (data->real && data->real->manager->write_byte)
+ retval = io_channel_write_byte(data->real, offset, count, buf);
+ if (data->write_byte)
+ data->write_byte(offset, count, retval);
+ if (data->flags & TEST_FLAG_WRITE)
+ fprintf(data->outfile,
+ "Test_io: write_byte(%lu, %d) returned %s\n",
+ offset, count, retval ? error_message(retval) : "OK");
+ return retval;
+}
+
+static errcode_t test_set_option(io_channel channel, const char *option,
+ const char *arg)
+{
+ struct test_private_data *data;
+ errcode_t retval = 0;
+
+ EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
+ data = (struct test_private_data *) channel->private_data;
+ EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
+
+
+ if (data->flags & TEST_FLAG_SET_OPTION)
+ fprintf(data->outfile, "Test_io: set_option(%s, %s) ",
+ option, arg);
+ if (data->real && data->real->manager->set_option) {
+ retval = (data->real->manager->set_option)(data->real,
+ option, arg);
+ if (data->flags & TEST_FLAG_SET_OPTION)
+ fprintf(data->outfile, "returned %s\n",
+ retval ? error_message(retval) : "OK");
+ } else {
+ if (data->flags & TEST_FLAG_SET_OPTION)
+ fprintf(data->outfile, "not implemented\n");
+ }
+ return retval;
+}
+
+static errcode_t test_get_stats(io_channel channel, io_stats *stats)
+{
+ struct test_private_data *data;
+ errcode_t retval = 0;
+
+ EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
+ data = (struct test_private_data *) channel->private_data;
+ EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
+
+ if (data->real && data->real->manager->get_stats) {
+ retval = (data->real->manager->get_stats)(data->real, stats);
+ }
+ return retval;
+}
+
+static errcode_t test_discard(io_channel channel, unsigned long long block,
+ unsigned long long count)
+{
+ struct test_private_data *data;
+ errcode_t retval = 0;
+
+ EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
+ data = (struct test_private_data *) channel->private_data;
+ EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
+
+ if (data->real)
+ retval = io_channel_discard(data->real, block, count);
+ if (data->flags & TEST_FLAG_DISCARD)
+ fprintf(data->outfile,
+ "Test_io: discard(%llu, %llu) returned %s\n",
+ block, count, retval ? error_message(retval) : "OK");
+ return retval;
+}
+
+static errcode_t test_cache_readahead(io_channel channel,
+ unsigned long long block,
+ unsigned long long count)
+{
+ struct test_private_data *data;
+ errcode_t retval = 0;
+
+ EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
+ data = (struct test_private_data *) channel->private_data;
+ EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
+
+ if (data->real)
+ retval = io_channel_cache_readahead(data->real, block, count);
+ if (data->flags & TEST_FLAG_READAHEAD)
+ fprintf(data->outfile,
+ "Test_io: readahead(%llu, %llu) returned %s\n",
+ block, count, retval ? error_message(retval) : "OK");
+ return retval;
+}
+
+static errcode_t test_zeroout(io_channel channel, unsigned long long block,
+ unsigned long long count)
+{
+ struct test_private_data *data;
+ errcode_t retval = 0;
+
+ EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
+ data = (struct test_private_data *) channel->private_data;
+ EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
+
+ if (data->real)
+ retval = io_channel_zeroout(data->real, block, count);
+ if (data->flags & TEST_FLAG_ZEROOUT)
+ fprintf(data->outfile,
+ "Test_io: zeroout(%llu, %llu) returned %s\n",
+ block, count, retval ? error_message(retval) : "OK");
+ return retval;
+}
+
+static struct struct_io_manager struct_test_manager = {
+ .magic = EXT2_ET_MAGIC_IO_MANAGER,
+ .name = "Test I/O Manager",
+ .open = test_open,
+ .close = test_close,
+ .set_blksize = test_set_blksize,
+ .read_blk = test_read_blk,
+ .write_blk = test_write_blk,
+ .flush = test_flush,
+ .write_byte = test_write_byte,
+ .set_option = test_set_option,
+ .get_stats = test_get_stats,
+ .read_blk64 = test_read_blk64,
+ .write_blk64 = test_write_blk64,
+ .discard = test_discard,
+ .cache_readahead = test_cache_readahead,
+ .zeroout = test_zeroout,
+};
+
+io_manager test_io_manager = &struct_test_manager;
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff