/*
 * FUSE: Filesystem in Userspace
 * Copyright (C) 2016 Canonical Ltd. <seth.forshee@canonical.com>
 *
 * This program can be distributed under the terms of the GNU GPL.
 * See the file COPYING.
 */

#include "fuse_i.h"

#include <linux/posix_acl.h>
#include <linux/posix_acl_xattr.h>

struct posix_acl *fuse_get_acl(struct inode *inode, int type)
{
	struct fuse_conn *fc = get_fuse_conn(inode);
	int size;
	const char *name;
	void *value = NULL;
	struct posix_acl *acl;

	if (!fc->posix_acl || fc->no_getxattr)
		return NULL;

	if (type == ACL_TYPE_ACCESS)
		name = XATTR_NAME_POSIX_ACL_ACCESS;
	else if (type == ACL_TYPE_DEFAULT)
		name = XATTR_NAME_POSIX_ACL_DEFAULT;
	else
		return ERR_PTR(-EOPNOTSUPP);

	value = kmalloc(PAGE_SIZE, GFP_KERNEL);
	if (!value)
		return ERR_PTR(-ENOMEM);
	size = fuse_getxattr(inode, name, value, PAGE_SIZE);
	if (size > 0)
		acl = posix_acl_from_xattr(&init_user_ns, value, size);
	else if ((size == 0) || (size == -ENODATA) ||
		 (size == -EOPNOTSUPP && fc->no_getxattr))
		acl = NULL;
	else if (size == -ERANGE)
		acl = ERR_PTR(-E2BIG);
	else
		acl = ERR_PTR(size);

	kfree(value);
	return acl;
}

int fuse_set_acl(struct inode *inode, struct posix_acl *acl, int type)
{
	struct fuse_conn *fc = get_fuse_conn(inode);
	const char *name;
	int ret;

	if (!fc->posix_acl || fc->no_setxattr)
		return -EOPNOTSUPP;

	if (type == ACL_TYPE_ACCESS)
		name = XATTR_NAME_POSIX_ACL_ACCESS;
	else if (type == ACL_TYPE_DEFAULT)
		name = XATTR_NAME_POSIX_ACL_DEFAULT;
	else
		return -EINVAL;

	if (acl) {
		/*
		 * Fuse userspace is responsible for updating access
		 * permissions in the inode, if needed. fuse_setxattr
		 * invalidates the inode attributes, which will force
		 * them to be refreshed the next time they are used,
		 * and it also updates i_ctime.
		 */
		size_t size = posix_acl_xattr_size(acl->a_count);
		void *value;

		if (size > PAGE_SIZE)
			return -E2BIG;

		value = kmalloc(size, GFP_KERNEL);
		if (!value)
			return -ENOMEM;

		ret = posix_acl_to_xattr(&init_user_ns, acl, value, size);
		if (ret < 0) {
			kfree(value);
			return ret;
		}

		ret = fuse_setxattr(inode, name, value, size, 0);
		kfree(value);
	} else {
		ret = fuse_removexattr(inode, name);
	}
	forget_all_cached_acls(inode);
	fuse_invalidate_attr(inode);

	return ret;
}
ost/fhci-q.c?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/host/fhci-q.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>host</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/fhci-q.c?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>fhci-q.c</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='99378fd26803328cbab64ae60fa98e1394d07a6d'/><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'>2017-02-09 11:58:05 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-09 11:58:05 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/fhci-q.c?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>99378fd26803328cbab64ae60fa98e1394d07a6d</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/host/fhci-q.c?id=99378fd26803328cbab64ae60fa98e1394d07a6d'>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=99378fd26803328cbab64ae60fa98e1394d07a6d'>1ab2771c56963fec8669ac87c7058c84345365c4</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/host/fhci-q.c?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>drivers/usb/host/fhci-q.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/fhci-q.c?h=nds-private-remove&amp;id=189addce85330208bea50ea7f1483b58822e93cf'>189addce85330208bea50ea7f1483b58822e93cf</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/fhci-q.c?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d&amp;id2=189addce85330208bea50ea7f1483b58822e93cf'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/fhci-q.c?h=nds-private-remove&amp;id=413d37326700aaf708730b940b04192c36e13ef4'>413d37326700aaf708730b940b04192c36e13ef4</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/fhci-q.c?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d&amp;id2=413d37326700aaf708730b940b04192c36e13ef4'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input</div><div class='commit-msg'>Pull input fixes from Dmitry Torokhov:
 "A fix for a crash in uinput, and a fix for build errors when HID-RMI
  is built-in but SERIO is a module"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: synaptics-rmi4 - select 'SERIO' when needed
  Input: uinput - fix crash when mixing old and new init style
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=99378fd26803328cbab64ae60fa98e1394d07a6d'>Diffstat</a> (limited to 'drivers/usb/host/fhci-q.c')</div><table summary='diffstat' class='diffstat'>

15) Fix a few regressions from virtio_net XDP support, from John
    Fastabend and Jakub Kicinski.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (102 commits)
  ISDN: eicon: silence misleading array-bounds warning
  net: phy: micrel: add support for KSZ8795
  gtp: fix cross netns recv on gtp socket
  gtp: clear DF bit on GTP packet tx
  gtp: add genl family modules alias
  tcp: don't annotate mark on control socket from tcp_v6_send_response()
  ravb: unmap descriptors when freeing rings
  virtio_net: reject XDP programs using header adjustment
  virtio_net: use dev_kfree_skb for small buffer XDP receive
  r8152: check rx after napi is enabled
  r8152: re-schedule napi for tx
  r8152: avoid start_xmit to schedule napi when napi is disabled
  r8152: avoid start_xmit to call napi_schedule during autosuspend
  net: dsa: Bring back device detaching in dsa_slave_suspend()
  net: phy: leds: Fix truncated LED trigger names
  net: phy: leds: Break dependency of phy.h on phy_led_triggers.h
  net: phy: leds: Clear phy_num_led_triggers on failure to avoid crash
  net-next: ethernet: mediatek: change the compatible string
  Documentation: devicetree: change the mediatek ethernet compatible string
  bnxt_en: Fix RTNL lock usage on bnxt_get_port_module_status().
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=1b1bc42c1692e9b62756323c675a44cb1a1f9dbd'>Diffstat</a> (limited to 'fs/nfsd/blocklayoutxdr.h')</div><table summary='diffstat' class='diffstat'>