/*
 * Procfs support for lockd
 *
 * Copyright (c) 2014 Jeff Layton <jlayton@primarydata.com>
 */

#include <linux/fs.h>
#include <linux/proc_fs.h>
#include <linux/module.h>
#include <linux/nsproxy.h>
#include <net/net_namespace.h>

#include "netns.h"
#include "procfs.h"

/*
 * We only allow strings that start with 'Y', 'y', or '1'.
 */
static ssize_t
nlm_end_grace_write(struct file *file, const char __user *buf, size_t size,
		    loff_t *pos)
{
	char *data;
	struct lockd_net *ln = net_generic(current->nsproxy->net_ns,
					   lockd_net_id);

	if (size < 1)
		return -EINVAL;

	data = simple_transaction_get(file, buf, size);
	if (IS_ERR(data))
		return PTR_ERR(data);

	switch(data[0]) {
	case 'Y':
	case 'y':
	case '1':
		locks_end_grace(&ln->lockd_manager);
		break;
	default:
		return -EINVAL;
	}

	return size;
}

static ssize_t
nlm_end_grace_read(struct file *file, char __user *buf, size_t size,
		   loff_t *pos)
{
	struct lockd_net *ln = net_generic(current->nsproxy->net_ns,
					   lockd_net_id);
	char resp[3];

	resp[0] = list_empty(&ln->lockd_manager.list) ? 'Y' : 'N';
	resp[1] = '\n';
	resp[2] = '\0';

	return simple_read_from_buffer(buf, size, pos, resp, sizeof(resp));
}

static const struct file_operations lockd_end_grace_operations = {
	.write		= nlm_end_grace_write,
	.read		= nlm_end_grace_read,
	.llseek		= default_llseek,
	.release	= simple_transaction_release,
};

int __init
lockd_create_procfs(void)
{
	struct proc_dir_entry *entry;

	entry = proc_mkdir("fs/lockd", NULL);
	if (!entry)
		return -ENOMEM;
	entry = proc_create("nlm_end_grace", S_IRUGO|S_IWUSR, entry,
				 &lockd_end_grace_operations);
	if (!entry) {
		remove_proc_entry("fs/lockd", NULL);
		return -ENOMEM;
	}
	return 0;
}

void __exit
lockd_remove_procfs(void)
{
	remove_proc_entry("fs/lockd/nlm_end_grace", NULL);
	remove_proc_entry("fs/lockd", NULL);
}
-emu/op-1.h?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/include/math-emu/op-1.h?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/include/math-emu/op-1.h?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/math-emu/op-1.h?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/math-emu/op-1.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/math-emu?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>math-emu</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/math-emu/op-1.h?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>op-1.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='0263d4ebd94b36280608e296cba39b924b6e832b'/><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'>2017-01-24 12:38:43 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-24 12:38:43 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/math-emu/op-1.h?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>0263d4ebd94b36280608e296cba39b924b6e832b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/math-emu/op-1.h?id=0263d4ebd94b36280608e296cba39b924b6e832b'>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=0263d4ebd94b36280608e296cba39b924b6e832b'>6e21b4b3d8e8fb12cdfcfd185d46992487265a9b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/math-emu/op-1.h?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>include/math-emu/op-1.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/math-emu/op-1.h?h=nds-private-remove&amp;id=19ca2c8fecb1592d623fe5e82d6796f8d446268d'>19ca2c8fecb1592d623fe5e82d6796f8d446268d</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/math-emu/op-1.h?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b&amp;id2=19ca2c8fecb1592d623fe5e82d6796f8d446268d'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/math-emu/op-1.h?h=nds-private-remove&amp;id=7b9e1d89e1b6a3b99a8fdd949aa0f98dd5bf2f6b'>7b9e1d89e1b6a3b99a8fdd949aa0f98dd5bf2f6b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/math-emu/op-1.h?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b&amp;id2=7b9e1d89e1b6a3b99a8fdd949aa0f98dd5bf2f6b'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'platform-drivers-x86-v4.10-4' of git://git.infradead.org/linux-platform-drivers-x86</div><div class='commit-msg'>Pull x86 platform-driver fixes from Andy Shevchenko:
 "This is my first pull request since I become a co-maintainer of
  Platform Drivers x86 subsystem. It's a bit bigger than usual due to
  material collected for almost two weeks in a row.

  MAINTAINERS:
   - Add myself to X86 PLATFORM DRIVERS as a co-maintainer

  ideapad-laptop:
   - handle ACPI event 1

  intel_mid_powerbtn:
   - Set IRQ_ONESHOT

  surface3-wmi:
   - fix uninitialized symbol
   - Shut up unused-function warning

  mlx-platform:
   - free first dev on error"

* tag 'platform-drivers-x86-v4.10-4' of git://git.infradead.org/linux-platform-drivers-x86:
  MAINTAINERS: Add myself to X86 PLATFORM DRIVERS as a co-maintainer
  platform/x86: ideapad-laptop: handle ACPI event 1
  platform/x86: intel_mid_powerbtn: Set IRQ_ONESHOT
  platform/x86: surface3-wmi: fix uninitialized symbol
  platform/x86: surface3-wmi: Shut up unused-function warning
  platform/x86: mlx-platform: free first dev on error
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=0263d4ebd94b36280608e296cba39b924b6e832b'>Diffstat</a> (limited to 'include/math-emu/op-1.h')</div><table summary='diffstat' class='diffstat'>