diff options
Diffstat (limited to 'e2fsprogs/ext2fs/unix_io.c')
| -rw-r--r-- | e2fsprogs/ext2fs/unix_io.c | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/e2fsprogs/ext2fs/unix_io.c b/e2fsprogs/ext2fs/unix_io.c index 5bc7a6a..36b2225 100644 --- a/e2fsprogs/ext2fs/unix_io.c +++ b/e2fsprogs/ext2fs/unix_io.c @@ -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; |