/*
 * AppArmor security module
 *
 * This file contains basic common functions used in AppArmor
 *
 * Copyright (C) 1998-2008 Novell/SUSE
 * Copyright 2009-2010 Canonical Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, version 2 of the
 * License.
 */

#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/vmalloc.h>

#include "include/audit.h"
#include "include/apparmor.h"


/**
 * aa_split_fqname - split a fqname into a profile and namespace name
 * @fqname: a full qualified name in namespace profile format (NOT NULL)
 * @ns_name: pointer to portion of the string containing the ns name (NOT NULL)
 *
 * Returns: profile name or NULL if one is not specified
 *
 * Split a namespace name from a profile name (see policy.c for naming
 * description).  If a portion of the name is missing it returns NULL for
 * that portion.
 *
 * NOTE: may modify the @fqname string.  The pointers returned point
 *       into the @fqname string.
 */
char *aa_split_fqname(char *fqname, char **ns_name)
{
	char *name = strim(fqname);

	*ns_name = NULL;
	if (name[0] == ':') {
		char *split = strchr(&name[1], ':');
		*ns_name = skip_spaces(&name[1]);
		if (split) {
			/* overwrite ':' with \0 */
			*split++ = 0;
			if (strncmp(split, "//", 2) == 0)
				split += 2;
			name = skip_spaces(split);
		} else
			/* a ns name without a following profile is allowed */
			name = NULL;
	}
	if (name && *name == 0)
		name = NULL;

	return name;
}

/**
 * aa_info_message - log a none profile related status message
 * @str: message to log
 */
void aa_info_message(const char *str)
{
	if (audit_enabled) {
		struct common_audit_data sa;
		struct apparmor_audit_data aad = {0,};
		sa.type = LSM_AUDIT_DATA_NONE;
		sa.aad = &aad;
		aad.info = str;
		aa_audit_msg(AUDIT_APPARMOR_STATUS, &sa, NULL);
	}
	printk(KERN_INFO "AppArmor: %s\n", str);
}

/**
 * __aa_kvmalloc - do allocation preferring kmalloc but falling back to vmalloc
 * @size: how many bytes of memory are required
 * @flags: the type of memory to allocate (see kmalloc).
 *
 * Return: allocated buffer or NULL if failed
 *
 * It is possible that policy being loaded from the user is larger than
 * what can be allocated by kmalloc, in those cases fall back to vmalloc.
 */
void *__aa_kvmalloc(size_t size, gfp_t flags)
{
	void *buffer = NULL;

	if (size == 0)
		return NULL;

	/* do not attempt kmalloc if we need more than 16 pages at once */
	if (size <= (16*PAGE_SIZE))
		buffer = kmalloc(size, flags | GFP_NOIO | __GFP_NOWARN);
	if (!buffer) {
		if (flags & __GFP_ZERO)
			buffer = vzalloc(size);
		else
			buffer = vmalloc(size);
	}
	return buffer;
}
3f'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/tipc?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>tipc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/server.c?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>server.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='585457fc8383e373ab923e46cd1f70bbfe46763f'/><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'>2017-01-22 12:40:09 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-22 12:40:09 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/server.c?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>585457fc8383e373ab923e46cd1f70bbfe46763f</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/tipc/server.c?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>f4e38133fb9b90543150a904cc1f6cc6b5657c7b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/tipc/server.c?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>net/tipc/server.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/server.c?id=bb6c01c2dde67b165cf7c808b0f00677b6f94b96'>bb6c01c2dde67b165cf7c808b0f00677b6f94b96</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/tipc/server.c?id=585457fc8383e373ab923e46cd1f70bbfe46763f&amp;id2=bb6c01c2dde67b165cf7c808b0f00677b6f94b96'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/tipc/server.c?id=0db1dba5dfaf70fb3baf07973996db2078528cde'>0db1dba5dfaf70fb3baf07973996db2078528cde</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/tipc/server.c?id=585457fc8383e373ab923e46cd1f70bbfe46763f&amp;id2=0db1dba5dfaf70fb3baf07973996db2078528cde'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost</div><div class='commit-msg'>Pull virtio/vhost fixes from Michael Tsirkin:
 "Random fixes and cleanups that accumulated over the time"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio/s390: virtio: constify virtio_config_ops structures
  virtio/s390: add missing \n to end of dev_err message
  virtio/s390: support READ_STATUS command for virtio-ccw
  tools/virtio/ringtest: tweaks for s390
  tools/virtio/ringtest: fix run-on-all.sh for offline cpus
  virtio_console: fix a crash in config_work_handler
  vhost/scsi: silence uninitialized variable warning
  vhost: scsi: constify target_core_fabric_ops structures
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=585457fc8383e373ab923e46cd1f70bbfe46763f'>Diffstat</a> (limited to 'net/tipc/server.c')</div><table summary='diffstat' class='diffstat'>