/*
 * dir.c
 *
 * Copyright (c) 1999 Al Smith
 */

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

static int efs_readdir(struct file *, struct dir_context *);

const struct file_operations efs_dir_operations = {
	.llseek		= generic_file_llseek,
	.read		= generic_read_dir,
	.iterate_shared	= efs_readdir,
};

const struct inode_operations efs_dir_inode_operations = {
	.lookup		= efs_lookup,
};

static int efs_readdir(struct file *file, struct dir_context *ctx)
{
	struct inode *inode = file_inode(file);
	efs_block_t		block;
	int			slot;

	if (inode->i_size & (EFS_DIRBSIZE-1))
		pr_warn("%s(): directory size not a multiple of EFS_DIRBSIZE\n",
			__func__);

	/* work out where this entry can be found */
	block = ctx->pos >> EFS_DIRBSIZE_BITS;

	/* each block contains at most 256 slots */
	slot  = ctx->pos & 0xff;

	/* look at all blocks */
	while (block < inode->i_blocks) {
		struct efs_dir		*dirblock;
		struct buffer_head *bh;

		/* read the dir block */
		bh = sb_bread(inode->i_sb, efs_bmap(inode, block));

		if (!bh) {
			pr_err("%s(): failed to read dir block %d\n",
			       __func__, block);
			break;
		}

		dirblock = (struct efs_dir *) bh->b_data; 

		if (be16_to_cpu(dirblock->magic) != EFS_DIRBLK_MAGIC) {
			pr_err("%s(): invalid directory block\n", __func__);
			brelse(bh);
			break;
		}

		for (; slot < dirblock->slots; slot++) {
			struct efs_dentry *dirslot;
			efs_ino_t inodenum;
			const char *nameptr;
			int namelen;

			if (dirblock->space[slot] == 0)
				continue;

			dirslot  = (struct efs_dentry *) (((char *) bh->b_data) + EFS_SLOTAT(dirblock, slot));

			inodenum = be32_to_cpu(dirslot->inode);
			namelen  = dirslot->namelen;
			nameptr  = dirslot->name;
			pr_debug("%s(): block %d slot %d/%d: inode %u, name \"%s\", namelen %u\n",
				 __func__, block, slot, dirblock->slots-1,
				 inodenum, nameptr, namelen);
			if (!namelen)
				continue;
			/* found the next entry */
			ctx->pos = (block << EFS_DIRBSIZE_BITS) | slot;

			/* sanity check */
			if (nameptr - (char *) dirblock + namelen > EFS_DIRBSIZE) {
				pr_warn("directory entry %d exceeds directory block\n",
					slot);
				continue;
			}

			/* copy filename and data in dirslot */
			if (!dir_emit(ctx, nameptr, namelen, inodenum, DT_UNKNOWN)) {
				brelse(bh);
				return 0;
			}
		}
		brelse(bh);

		slot = 0;
		block++;
	}
	ctx->pos = (block << EFS_DIRBSIZE_BITS) | slot;
	return 0;
}
log/include/net/irda/timer.h'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='2b1d530cb3157f828fcaadd259613f59db3c6d1c'/><select name='qt'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/irda?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>irda</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/irda/timer.h?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>timer.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='2b1d530cb3157f828fcaadd259613f59db3c6d1c'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Kalle Valo &lt;kvalo@codeaurora.org&gt;</td><td class='right'>2017-01-27 14:19:25 +0200</td></tr>
<tr><th>committer</th><td>Kalle Valo &lt;kvalo@codeaurora.org&gt;</td><td class='right'>2017-01-28 09:15:50 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/irda/timer.h?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>2b1d530cb3157f828fcaadd259613f59db3c6d1c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/irda/timer.h?id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>fb5dfe8f2e6956f54377c7275f330cd158ead259</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/irda/timer.h?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>include/net/irda/timer.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/irda/timer.h?h=nds-private-remove&amp;id=bd19b5ab1da654de456e102250822ec06311d6ad'>bd19b5ab1da654de456e102250822ec06311d6ad</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/irda/timer.h?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c&amp;id2=bd19b5ab1da654de456e102250822ec06311d6ad'>diff</a>)</td></tr></table>
<div class='commit-subject'>MAINTAINERS: ath9k-devel is closed</div><div class='commit-msg'>ath9k-devel list is now closed, only linux-wireless should be used.

Reported-by: Michael Renzmann &lt;mrenzmann@madwifi-project.org&gt;
Signed-off-by: Kalle Valo &lt;kvalo@codeaurora.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=2b1d530cb3157f828fcaadd259613f59db3c6d1c'>Diffstat</a> (limited to 'include/net/irda/timer.h')</div><table summary='diffstat' class='diffstat'>