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This commit is contained in:
Tim Riker
2006-01-25 00:08:53 +00:00
parent f64ff682a3
commit c1ef7bdd8d
254 changed files with 2002 additions and 2002 deletions
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52
e2fsprogs/ext2fs/unix_io.c
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@@ -1,13 +1,13 @@
/*
* unix_io.c --- This is the Unix (well, really POSIX) implementation
* of the I/O manager.
* of the I/O manager.
*
* Implements a one-block write-through cache.
*
* Includes support for Windows NT support under Cygwin.
* Includes support for Windows NT support under Cygwin.
*
* Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
* 2002 by Theodore Ts'o.
* 2002 by Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
@@ -79,7 +79,7 @@ static errcode_t unix_write_blk(io_channel channel, unsigned long block,
static errcode_t unix_flush(io_channel channel);
static errcode_t unix_write_byte(io_channel channel, unsigned long offset,
int size, const void *data);
static errcode_t unix_set_option(io_channel channel, const char *option,
static errcode_t unix_set_option(io_channel channel, const char *option,
const char *arg);
static void reuse_cache(io_channel channel, struct unix_private_data *data,
@@ -140,7 +140,7 @@ static errcode_t raw_read_blk(io_channel channel,
goto error_out;
}
return 0;
error_out:
memset((char *) buf+actual, 0, size-actual);
if (channel->read_error)
@@ -168,7 +168,7 @@ static errcode_t raw_read_blk(io_channel channel,
location = ((ext2_loff_t) block * channel->block_size) + data->offset;
#ifdef DEBUG
printf("count=%d, size=%d, block=%d, blk_size=%d, location=%lx\n",
count, size, block, channel->block_size, location);
count, size, block, channel->block_size, location);
#endif
if (ext2fs_llseek(data->dev, location, SEEK_SET) != location) {
retval = errno ? errno : EXT2_ET_LLSEEK_FAILED;
@@ -227,14 +227,14 @@ static errcode_t raw_write_blk(io_channel channel,
retval = errno ? errno : EXT2_ET_LLSEEK_FAILED;
goto error_out;
}
actual = write(data->dev, buf, size);
if (actual != size) {
retval = EXT2_ET_SHORT_WRITE;
goto error_out;
}
return 0;
error_out:
if (channel->write_error)
retval = (channel->write_error)(channel, block, count, buf,
@@ -254,7 +254,7 @@ static errcode_t alloc_cache(io_channel channel,
errcode_t retval;
struct unix_cache *cache;
int i;
data->access_time = 0;
for (i=0, cache = data->cache; i < CACHE_SIZE; i++, cache++) {
cache->block = 0;
@@ -273,7 +273,7 @@ static void free_cache(struct unix_private_data *data)
{
struct unix_cache *cache;
int i;
data->access_time = 0;
for (i=0, cache = data->cache; i < CACHE_SIZE; i++, cache++) {
cache->block = 0;
@@ -298,7 +298,7 @@ static struct unix_cache *find_cached_block(struct unix_private_data *data,
{
struct unix_cache *cache, *unused_cache, *oldest_cache;
int i;
unused_cache = oldest_cache = 0;
for (i=0, cache = data->cache; i < CACHE_SIZE; i++, cache++) {
if (!cache->in_use) {
@@ -345,18 +345,18 @@ static errcode_t flush_cached_blocks(io_channel channel,
struct unix_cache *cache;
errcode_t retval, retval2;
int i;
retval2 = 0;
for (i=0, cache = data->cache; i < CACHE_SIZE; i++, cache++) {
if (!cache->in_use)
continue;
if (invalidate)
cache->in_use = 0;
if (!cache->dirty)
continue;
retval = raw_write_blk(channel, data,
cache->block, 1, cache->buf);
if (retval)
@@ -376,7 +376,7 @@ static errcode_t unix_open(const char *name, int flags, io_channel *channel)
int open_flags;
struct stat st;
#ifdef __linux__
struct utsname ut;
struct utsname ut;
#endif
if (name == 0)
@@ -431,7 +431,7 @@ static errcode_t unix_open(const char *name, int flags, io_channel *channel)
* block devices are wrongly getting hit by the filesize
* limit. This workaround isn't perfect, since it won't work
* if glibc wasn't built against 2.2 header files. (Sigh.)
*
*
*/
if ((flags & IO_FLAG_RW) &&
(uname(&ut) == 0) &&
@@ -442,7 +442,7 @@ static errcode_t unix_open(const char *name, int flags, io_channel *channel)
(fstat(data->dev, &st) == 0) &&
(S_ISBLK(st.st_mode))) {
struct rlimit rlim;
rlim.rlim_cur = rlim.rlim_max = (unsigned long) RLIM_INFINITY;
setrlimit(RLIMIT_FSIZE, &rlim);
getrlimit(RLIMIT_FSIZE, &rlim);
@@ -507,7 +507,7 @@ static errcode_t unix_set_blksize(io_channel channel, int blksize)
if ((retval = flush_cached_blocks(channel, data, 0)))
return retval;
#endif
channel->block_size = blksize;
free_cache(data);
if ((retval = alloc_cache(channel, data)))
@@ -568,7 +568,7 @@ static errcode_t unix_read_blk(io_channel channel, unsigned long block,
#endif
if ((retval = raw_read_blk(channel, data, block, i, cp)))
return retval;
/* Save the results in the cache */
for (j=0; j < i; j++) {
count--;
@@ -597,7 +597,7 @@ static errcode_t unix_write_blk(io_channel channel, unsigned long block,
#ifdef NO_IO_CACHE
return raw_write_blk(channel, data, block, count, buf);
#else
#else
/*
* If we're doing an odd-sized write or a very large write,
* flush out the cache completely and then do a direct write.
@@ -616,7 +616,7 @@ static errcode_t unix_write_blk(io_channel channel, unsigned long block,
writethrough = channel->flags & CHANNEL_FLAGS_WRITETHROUGH;
if (writethrough)
retval = raw_write_blk(channel, data, block, count, buf);
cp = buf;
while (count > 0) {
cache = find_cached_block(data, block, &reuse);
@@ -655,7 +655,7 @@ static errcode_t unix_write_byte(io_channel channel, unsigned long offset,
if (lseek(data->dev, offset + data->offset, SEEK_SET) < 0)
return errno;
actual = write(data->dev, buf, size);
if (actual != size)
return EXT2_ET_SHORT_WRITE;
@@ -664,13 +664,13 @@ static errcode_t unix_write_byte(io_channel channel, unsigned long offset,
}
/*
* Flush data buffers to disk.
* Flush data buffers to disk.
*/
static errcode_t unix_flush(io_channel channel)
{
struct unix_private_data *data;
errcode_t retval = 0;
EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
data = (struct unix_private_data *) channel->private_data;
EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_UNIX_IO_CHANNEL);
@@ -682,7 +682,7 @@ static errcode_t unix_flush(io_channel channel)
return retval;
}
static errcode_t unix_set_option(io_channel channel, const char *option,
static errcode_t unix_set_option(io_channel channel, const char *option,
const char *arg)
{
struct unix_private_data *data;