/*
 * linux/fs/ext4/xattr_security.c
 * Handler for storing security labels as extended attributes.
 */

#include <linux/string.h>
#include <linux/fs.h>
#include <linux/security.h>
#include <linux/slab.h>
#include "ext4_jbd2.h"
#include "ext4.h"
#include "xattr.h"

static int
ext4_xattr_security_get(const struct xattr_handler *handler,
			struct dentry *unused, struct inode *inode,
			const char *name, void *buffer, size_t size)
{
	return ext4_xattr_get(inode, EXT4_XATTR_INDEX_SECURITY,
			      name, buffer, size);
}

static int
ext4_xattr_security_set(const struct xattr_handler *handler,
			struct dentry *unused, struct inode *inode,
			const char *name, const void *value,
			size_t size, int flags)
{
	return ext4_xattr_set(inode, EXT4_XATTR_INDEX_SECURITY,
			      name, value, size, flags);
}

static int
ext4_initxattrs(struct inode *inode, const struct xattr *xattr_array,
		void *fs_info)
{
	const struct xattr *xattr;
	handle_t *handle = fs_info;
	int err = 0;

	for (xattr = xattr_array; xattr->name != NULL; xattr++) {
		err = ext4_xattr_set_handle(handle, inode,
					    EXT4_XATTR_INDEX_SECURITY,
					    xattr->name, xattr->value,
					    xattr->value_len, 0);
		if (err < 0)
			break;
	}
	return err;
}

int
ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
		   const struct qstr *qstr)
{
	return security_inode_init_security(inode, dir, qstr,
					    &ext4_initxattrs, handle);
}

const struct xattr_handler ext4_xattr_security_handler = {
	.prefix	= XATTR_SECURITY_PREFIX,
	.get	= ext4_xattr_security_get,
	.set	= ext4_xattr_security_set,
};
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/act_api.h?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>act_api.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='883af14e67e8b8702b5560aa64c888c0cd0bd66c'/><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 16:54:39 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-24 16:54:39 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/act_api.h?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>883af14e67e8b8702b5560aa64c888c0cd0bd66c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/act_api.h?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>74e3a6b53f5fad9f7848ab1b9f6921b7012940a4</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/act_api.h?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>include/net/act_api.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/act_api.h?id=0263d4ebd94b36280608e296cba39b924b6e832b'>0263d4ebd94b36280608e296cba39b924b6e832b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/act_api.h?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c&amp;id2=0263d4ebd94b36280608e296cba39b924b6e832b'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/act_api.h?id=aab45453ff5c77200c6da4ac909f7a4392aed17e'>aab45453ff5c77200c6da4ac909f7a4392aed17e</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/act_api.h?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c&amp;id2=aab45453ff5c77200c6da4ac909f7a4392aed17e'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'akpm' (patches from Andrew)</div><div class='commit-msg'>Merge fixes from Andrew Morton:
 "26 fixes"

* emailed patches from Andrew Morton &lt;akpm@linux-foundation.org&gt;: (26 commits)
  MAINTAINERS: add Dan Streetman to zbud maintainers
  MAINTAINERS: add Dan Streetman to zswap maintainers
  mm: do not export ioremap_page_range symbol for external module
  mn10300: fix build error of missing fpu_save()
  romfs: use different way to generate fsid for BLOCK or MTD
  frv: add missing atomic64 operations
  mm, page_alloc: fix premature OOM when racing with cpuset mems update
  mm, page_alloc: move cpuset seqcount checking to slowpath
  mm, page_alloc: fix fast-path race with cpuset update or removal
  mm, page_alloc: fix check for NULL preferred_zone
  kernel/panic.c: add missing \n
  fbdev: color map copying bounds checking
  frv: add atomic64_add_unless()
  mm/mempolicy.c: do not put mempolicy before using its nodemask
  radix-tree: fix private list warnings
  Documentation/filesystems/proc.txt: add VmPin
  mm, memcg: do not retry precharge charges
  proc: add a schedule point in proc_pid_readdir()
  mm: alloc_contig: re-allow CMA to compact FS pages
  mm/slub.c: trace free objects at KERN_INFO
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>Diffstat</a> (limited to 'include/net/act_api.h')</div><table summary='diffstat' class='diffstat'>