/*
 * A security identifier table (sidtab) is a hash table
 * of security context structures indexed by SID value.
 *
 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
 */
#ifndef _SS_SIDTAB_H_
#define _SS_SIDTAB_H_

#include "context.h"

struct sidtab_node {
	u32 sid;		/* security identifier */
	struct context context;	/* security context structure */
	struct sidtab_node *next;
};

#define SIDTAB_HASH_BITS 7
#define SIDTAB_HASH_BUCKETS (1 << SIDTAB_HASH_BITS)
#define SIDTAB_HASH_MASK (SIDTAB_HASH_BUCKETS-1)

#define SIDTAB_SIZE SIDTAB_HASH_BUCKETS

struct sidtab {
	struct sidtab_node **htable;
	unsigned int nel;	/* number of elements */
	unsigned int next_sid;	/* next SID to allocate */
	unsigned char shutdown;
#define SIDTAB_CACHE_LEN	3
	struct sidtab_node *cache[SIDTAB_CACHE_LEN];
	spinlock_t lock;
};

int sidtab_init(struct sidtab *s);
int sidtab_insert(struct sidtab *s, u32 sid, struct context *context);
struct context *sidtab_search(struct sidtab *s, u32 sid);
struct context *sidtab_search_force(struct sidtab *s, u32 sid);

int sidtab_map(struct sidtab *s,
	       int (*apply) (u32 sid,
			     struct context *context,
			     void *args),
	       void *args);

int sidtab_context_to_sid(struct sidtab *s,
			  struct context *context,
			  u32 *sid);

void sidtab_hash_eval(struct sidtab *h, char *tag);
void sidtab_destroy(struct sidtab *s);
void sidtab_set(struct sidtab *dst, struct sidtab *src);
void sidtab_shutdown(struct sidtab *s);

#endif	/* _SS_SIDTAB_H_ */


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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=59e8f10ac16186c226ef81937994534b28b976f4'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?id=59e8f10ac16186c226ef81937994534b28b976f4'>include</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include?id=59e8f10ac16186c226ef81937994534b28b976f4&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-08 15:41:43 -0800'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=4d59b6ccf000862beed6fc0765d3209f98a8d8a2'>cpumask: use nr_cpumask_bits for parsing functions</a></td><td>Tejun Heo</td><td>1</td><td><span class='deletions'>-4</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-08 15:41:43 -0800'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=0911d0041c22922228ca52a977d7b0b0159fee4b'>mm: avoid returning VM_FAULT_RETRY from -&gt;page_mkwrite handlers</a></td><td>Jan Kara</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-07 12:10:57 -0800'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>Linus Torvalds</td><td>3</td><td><span class='deletions'>-7</span>/<span class='insertions'>+10</span></td></tr>
<tr><td><span title='2017-02-07 11:19:00 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=69629464e0b587f3711739b3aa2bcdaf2e075276'>udp: properly cope with csum errors</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-04 19:44:22 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=d71b7896886345c53ef1d84bda2bc758554f5d61'>netlabel: out of bound access in cipso_v4_validate()</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-04 12:18:01 -0800'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=a572a1b999489efb591287632279c6c9eca3e4ed'>Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/ker...</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+17</span></td></tr>
<tr><td><span title='2017-02-04 10:44:15 -0800'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=412e6d3fec247b2bc83106514b0fb3b17e2eb7fe'>Merge tag 'char-misc-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/g...</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+30</span></td></tr>
<tr><td><span title='2017-02-03 14:13:19 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=a96dfddbcc04336bbed50dc2b24823e45e09e80c'>base/memory, hotplug: fix a kernel oops in show_valid_zones()</a></td><td>Toshi Kani</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-03 11:32:25 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=79c9089f97d37ffac88c3ddb6d359b2cf75058b7'>Merge tag 'drm-fixes-for-v4.10-rc7' of git://people.freedesktop.org/~airlied/...</a></td><td>Linus Torvalds</td><td>2</td><td><span class='deletions'>-1</span>/<span class='insertions'>+16</span></td></tr>
<tr><td><span title='2017-02-03 10:30:27 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=2cb54ce9ee92ae627bc1cef8bea236905910a86d'>Merge branch 'modversions' (modversions fixes for powerpc from Ard)</a></td><td>Linus Torvalds</td><td>3</td><td><span class='deletions'>-17</span>/<span class='insertions'>+25</span></td></tr>
<tr><td><span title='2017-02-03 09:56:43 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=29905b52fad0854351f57bab867647e4982285bf'>log2: make order_base_2() behave correctly on const input value zero</a></td><td>Ard Biesheuvel</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+12</span></td></tr>
<tr><td><span title='2017-02-03 08:28:25 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=4b9eee96fcb361a5e16a8d2619825e8a048f81f7'>module: unify absolute krctab definitions for 32-bit and 64-bit</a></td><td>Ard Biesheuvel</td><td>1</td><td><span class='deletions'>-7</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-03 08:28:25 -0800'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=71810db27c1c853b335675bee335d893bc3d324b'>modversions: treat symbol CRCs as 32 bit quantities</a></td><td>Ard Biesheuvel</td><td>3</td><td><span class='deletions'>-12</span>/<span class='insertions'>+27</span></td></tr>
<tr><td><span title='2017-02-03 11:05:23 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=013e8167899d389075160412a8c0c5e0581e1f13'>ipv6: sr: remove cleanup flag and fix HMAC computation</a></td><td>David Lebrun</td><td>1</td><td><span class='deletions'>-6</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-02 13:30:19 -0800'>2017-02-02</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=891aa1e0f13c3aaa756c69b343d6ab6f3357009b'>Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/ke...</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-01 11:52:27 -0800'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=6d04dfc8966019b8b0977b2cb942351f13d2b178'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>Linus Torvalds</td><td>4</td><td><span class='deletions'>-19</span>/<span class='insertions'>+26</span></td></tr>
<tr><td><span title='2017-02-01 10:30:56 -0800'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=2883aaea363f7a897ff06d2e6c73ae7aae285bcb'>Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vir...</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-01 12:10:56 -0500'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=1a2a14444d32b89b28116daea86f63ced1716668'>net: fix ndo_features_check/ndo_fix_features comment ordering</a></td><td>Dimitris Michailidis</td><td>1</td><td><span class='deletions'>-14</span>/<span class='insertions'>+15</span></td></tr>
<tr><td><span title='2017-02-01 08:37:27 +0100'>2017-02-01</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include?id=fff4b87e594ad3d2e4f51e8d3d86a6f9d3d8b654'>perf/x86/intel/uncore: Make package handling more robust</a></td><td>Thomas Gleixner</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+0</span></td></tr>