/*
 * symlink.c
 *
 * Copyright (c) 1999 Al Smith
 *
 * Portions derived from work (c) 1995,1996 Christian Vogelgsang.
 */

#include <linux/string.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
#include "efs.h"

static int efs_symlink_readpage(struct file *file, struct page *page)
{
	char *link = page_address(page);
	struct buffer_head * bh;
	struct inode * inode = page->mapping->host;
	efs_block_t size = inode->i_size;
	int err;
  
	err = -ENAMETOOLONG;
	if (size > 2 * EFS_BLOCKSIZE)
		goto fail;
  
	/* read first 512 bytes of link target */
	err = -EIO;
	bh = sb_bread(inode->i_sb, efs_bmap(inode, 0));
	if (!bh)
		goto fail;
	memcpy(link, bh->b_data, (size > EFS_BLOCKSIZE) ? EFS_BLOCKSIZE : size);
	brelse(bh);
	if (size > EFS_BLOCKSIZE) {
		bh = sb_bread(inode->i_sb, efs_bmap(inode, 1));
		if (!bh)
			goto fail;
		memcpy(link + EFS_BLOCKSIZE, bh->b_data, size - EFS_BLOCKSIZE);
		brelse(bh);
	}
	link[size] = '\0';
	SetPageUptodate(page);
	unlock_page(page);
	return 0;
fail:
	SetPageError(page);
	unlock_page(page);
	return err;
}

const struct address_space_operations efs_symlink_aops = {
	.readpage	= efs_symlink_readpage
};
ed='selected'>nds-private-remove</option>
<option value='packet-loop-back'>packet-loop-back</option>
<option value='packet-rx-pump-back'>packet-rx-pump-back</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/?h=nds-private-remove'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>refs</a><a class='active' href='/cgit.cgi/linux/net-next.git/log/sound/soc/codecs/ad193x.c?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/codecs/ad193x.c?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/ad193x.c?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/ad193x.c?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/soc/codecs/ad193x.c'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='2da64d20a0b20046d688e44f4033efd09157e29d'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/codecs?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>codecs</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/codecs/ad193x.c?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d'>ad193x.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/sound/soc/codecs/ad193x.c?h=nds-private-remove&amp;id=2da64d20a0b20046d688e44f4033efd09157e29d&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>