/*
 * QNX4 file system, Linux implementation.
 *
 * Version : 0.2.1
 *
 * Using parts of the xiafs filesystem.
 *
 * History :
 *
 * 28-05-1998 by Richard Frowijn : first release.
 * 20-06-1998 by Frank Denis : Linux 2.1.99+ & dcache support.
 */

#include <linux/buffer_head.h>
#include "qnx4.h"

static int qnx4_readdir(struct file *file, struct dir_context *ctx)
{
	struct inode *inode = file_inode(file);
	unsigned int offset;
	struct buffer_head *bh;
	struct qnx4_inode_entry *de;
	struct qnx4_link_info *le;
	unsigned long blknum;
	int ix, ino;
	int size;

	QNX4DEBUG((KERN_INFO "qnx4_readdir:i_size = %ld\n", (long) inode->i_size));
	QNX4DEBUG((KERN_INFO "pos                 = %ld\n", (long) ctx->pos));

	while (ctx->pos < inode->i_size) {
		blknum = qnx4_block_map(inode, ctx->pos >> QNX4_BLOCK_SIZE_BITS);
		bh = sb_bread(inode->i_sb, blknum);
		if (bh == NULL) {
			printk(KERN_ERR "qnx4_readdir: bread failed (%ld)\n", blknum);
			return 0;
		}
		ix = (ctx->pos >> QNX4_DIR_ENTRY_SIZE_BITS) % QNX4_INODES_PER_BLOCK;
		for (; ix < QNX4_INODES_PER_BLOCK; ix++, ctx->pos += QNX4_DIR_ENTRY_SIZE) {
			offset = ix * QNX4_DIR_ENTRY_SIZE;
			de = (struct qnx4_inode_entry *) (bh->b_data + offset);
			if (!de->di_fname[0])
				continue;
			if (!(de->di_status & (QNX4_FILE_USED|QNX4_FILE_LINK)))
				continue;
			if (!(de->di_status & QNX4_FILE_LINK))
				size = QNX4_SHORT_NAME_MAX;
			else
				size = QNX4_NAME_MAX;
			size = strnlen(de->di_fname, size);
			QNX4DEBUG((KERN_INFO "qnx4_readdir:%.*s\n", size, de->di_fname));
			if (!(de->di_status & QNX4_FILE_LINK))
				ino = blknum * QNX4_INODES_PER_BLOCK + ix - 1;
			else {
				le  = (struct qnx4_link_info*)de;
				ino = ( le32_to_cpu(le->dl_inode_blk) - 1 ) *
					QNX4_INODES_PER_BLOCK +
					le->dl_inode_ndx;
			}
			if (!dir_emit(ctx, de->di_fname, size, ino, DT_UNKNOWN)) {
				brelse(bh);
				return 0;
			}
		}
		brelse(bh);
	}
	return 0;
}

const struct file_operations qnx4_dir_operations =
{
	.llseek		= generic_file_llseek,
	.read		= generic_read_dir,
	.iterate_shared	= qnx4_readdir,
	.fsync		= generic_file_fsync,
};

const struct inode_operations qnx4_dir_inode_operations =
{
	.lookup		= qnx4_lookup,
};
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=308c470bc482c46b5acbb2c2072df303d6526250'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=308c470bc482c46b5acbb2c2072df303d6526250'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ieee802154?id=308c470bc482c46b5acbb2c2072df303d6526250'>ieee802154</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='308c470bc482c46b5acbb2c2072df303d6526250'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-06 15:38:39 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-06 15:38:39 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ieee802154?id=308c470bc482c46b5acbb2c2072df303d6526250'>308c470bc482c46b5acbb2c2072df303d6526250</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ieee802154?id=308c470bc482c46b5acbb2c2072df303d6526250'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=308c470bc482c46b5acbb2c2072df303d6526250'>a01f7696ce11781064bbd8d68e23af151ada37d7</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ieee802154?id=308c470bc482c46b5acbb2c2072df303d6526250'>net/ieee802154</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ieee802154?id=d72f0ded89cc78598b8eb0570890234eba167588'>d72f0ded89cc78598b8eb0570890234eba167588</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ieee802154?id=308c470bc482c46b5acbb2c2072df303d6526250&amp;id2=d72f0ded89cc78598b8eb0570890234eba167588'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ieee802154?id=e4f34cf6d59160818dcdcf41f4116cc88093ece3'>e4f34cf6d59160818dcdcf41f4116cc88093ece3</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ieee802154?id=308c470bc482c46b5acbb2c2072df303d6526250&amp;id2=e4f34cf6d59160818dcdcf41f4116cc88093ece3'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'sound-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound</div><div class='commit-msg'>Pull sound fixes from Takashi Iwai:
 "Nothing particular stands out, only a few small fixes for USB-audio,
  HD-audio and Firewire. The USB-audio fix is the respin of the previous
  race fix after a revert due to the regression"

* tag 'sound-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  Revert "ALSA: firewire-lib: change structure member with proper type"
  ALSA: usb-audio: test EP_FLAG_RUNNING at urb completion
  ALSA: usb-audio: Fix irq/process data synchronization
  ALSA: hda - Apply asus-mode8 fixup to ASUS X71SL
  ALSA: hda - Fix up GPIO for ASUS ROG Ranger
  ALSA: firewire-lib: change structure member with proper type
  ALSA: firewire-tascam: Fix to handle error from initialization of stream data
  ALSA: fireworks: fix asymmetric API call at unit removal
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=308c470bc482c46b5acbb2c2072df303d6526250'>Diffstat</a> (limited to 'net/ieee802154')</div><table summary='diffstat' class='diffstat'>