1 /* Updated: Karl MacMillan <kmacmillan@tresys.com>
3 * Added conditional policy language extensions
5 * Copyright (C) 2003 - 2004 Tresys Technology, LLC
6 * Copyright (C) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, version 2.
12 #include <linux/config.h>
13 #include <linux/kernel.h>
14 #include <linux/pagemap.h>
15 #include <linux/slab.h>
16 #include <linux/vmalloc.h>
18 #include <linux/mutex.h>
19 #include <linux/init.h>
20 #include <linux/string.h>
21 #include <linux/security.h>
22 #include <linux/major.h>
23 #include <linux/seq_file.h>
24 #include <linux/percpu.h>
25 #include <asm/uaccess.h>
26 #include <asm/semaphore.h>
28 /* selinuxfs pseudo filesystem for exporting the security policy API.
29 Based on the proc code and the fs/nfsd/nfsctl.c code. */
36 #include "conditional.h"
38 unsigned int selinux_checkreqprot = CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE;
40 static int __init checkreqprot_setup(char *str)
42 selinux_checkreqprot = simple_strtoul(str,NULL,0) ? 1 : 0;
45 __setup("checkreqprot=", checkreqprot_setup);
48 static DEFINE_MUTEX(sel_mutex);
50 /* global data for booleans */
51 static struct dentry *bool_dir = NULL;
52 static int bool_num = 0;
53 static int *bool_pending_values = NULL;
55 extern void selnl_notify_setenforce(int val);
57 /* Check whether a task is allowed to use a security operation. */
58 static int task_has_security(struct task_struct *tsk,
61 struct task_security_struct *tsec;
67 return avc_has_perm(tsec->sid, SECINITSID_SECURITY,
68 SECCLASS_SECURITY, perms, NULL);
73 SEL_LOAD, /* load policy */
74 SEL_ENFORCE, /* get or set enforcing status */
75 SEL_CONTEXT, /* validate context */
76 SEL_ACCESS, /* compute access decision */
77 SEL_CREATE, /* compute create labeling decision */
78 SEL_RELABEL, /* compute relabeling decision */
79 SEL_USER, /* compute reachable user contexts */
80 SEL_POLICYVERS, /* return policy version for this kernel */
81 SEL_COMMIT_BOOLS, /* commit new boolean values */
82 SEL_MLS, /* return if MLS policy is enabled */
83 SEL_DISABLE, /* disable SELinux until next reboot */
84 SEL_AVC, /* AVC management directory */
85 SEL_MEMBER, /* compute polyinstantiation membership decision */
86 SEL_CHECKREQPROT, /* check requested protection, not kernel-applied one */
90 static ssize_t sel_read_enforce(struct file *filp, char __user *buf,
91 size_t count, loff_t *ppos)
93 char tmpbuf[TMPBUFLEN];
96 length = scnprintf(tmpbuf, TMPBUFLEN, "%d", selinux_enforcing);
97 return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
100 #ifdef CONFIG_SECURITY_SELINUX_DEVELOP
101 static ssize_t sel_write_enforce(struct file * file, const char __user * buf,
102 size_t count, loff_t *ppos)
109 if (count >= PAGE_SIZE)
112 /* No partial writes. */
115 page = (char*)get_zeroed_page(GFP_KERNEL);
119 if (copy_from_user(page, buf, count))
123 if (sscanf(page, "%d", &new_value) != 1)
126 if (new_value != selinux_enforcing) {
127 length = task_has_security(current, SECURITY__SETENFORCE);
130 selinux_enforcing = new_value;
131 if (selinux_enforcing)
133 selnl_notify_setenforce(selinux_enforcing);
137 free_page((unsigned long) page);
141 #define sel_write_enforce NULL
144 static struct file_operations sel_enforce_ops = {
145 .read = sel_read_enforce,
146 .write = sel_write_enforce,
149 #ifdef CONFIG_SECURITY_SELINUX_DISABLE
150 static ssize_t sel_write_disable(struct file * file, const char __user * buf,
151 size_t count, loff_t *ppos)
157 extern int selinux_disable(void);
159 if (count >= PAGE_SIZE)
162 /* No partial writes. */
165 page = (char*)get_zeroed_page(GFP_KERNEL);
169 if (copy_from_user(page, buf, count))
173 if (sscanf(page, "%d", &new_value) != 1)
177 length = selinux_disable();
184 free_page((unsigned long) page);
188 #define sel_write_disable NULL
191 static struct file_operations sel_disable_ops = {
192 .write = sel_write_disable,
195 static ssize_t sel_read_policyvers(struct file *filp, char __user *buf,
196 size_t count, loff_t *ppos)
198 char tmpbuf[TMPBUFLEN];
201 length = scnprintf(tmpbuf, TMPBUFLEN, "%u", POLICYDB_VERSION_MAX);
202 return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
205 static struct file_operations sel_policyvers_ops = {
206 .read = sel_read_policyvers,
209 /* declaration for sel_write_load */
210 static int sel_make_bools(void);
212 static ssize_t sel_read_mls(struct file *filp, char __user *buf,
213 size_t count, loff_t *ppos)
215 char tmpbuf[TMPBUFLEN];
218 length = scnprintf(tmpbuf, TMPBUFLEN, "%d", selinux_mls_enabled);
219 return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
222 static struct file_operations sel_mls_ops = {
223 .read = sel_read_mls,
226 static ssize_t sel_write_load(struct file * file, const char __user * buf,
227 size_t count, loff_t *ppos)
234 mutex_lock(&sel_mutex);
236 length = task_has_security(current, SECURITY__LOAD_POLICY);
241 /* No partial writes. */
246 if ((count > 64 * 1024 * 1024)
247 || (data = vmalloc(count)) == NULL) {
253 if (copy_from_user(data, buf, count) != 0)
256 length = security_load_policy(data, count);
260 ret = sel_make_bools();
266 mutex_unlock(&sel_mutex);
271 static struct file_operations sel_load_ops = {
272 .write = sel_write_load,
275 static ssize_t sel_write_context(struct file * file, char *buf, size_t size)
281 length = task_has_security(current, SECURITY__CHECK_CONTEXT);
285 length = security_context_to_sid(buf, size, &sid);
289 length = security_sid_to_context(sid, &canon, &len);
293 if (len > SIMPLE_TRANSACTION_LIMIT) {
294 printk(KERN_ERR "%s: context size (%u) exceeds payload "
295 "max\n", __FUNCTION__, len);
300 memcpy(buf, canon, len);
307 static ssize_t sel_read_checkreqprot(struct file *filp, char __user *buf,
308 size_t count, loff_t *ppos)
310 char tmpbuf[TMPBUFLEN];
313 length = scnprintf(tmpbuf, TMPBUFLEN, "%u", selinux_checkreqprot);
314 return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
317 static ssize_t sel_write_checkreqprot(struct file * file, const char __user * buf,
318 size_t count, loff_t *ppos)
322 unsigned int new_value;
324 length = task_has_security(current, SECURITY__SETCHECKREQPROT);
328 if (count >= PAGE_SIZE)
331 /* No partial writes. */
334 page = (char*)get_zeroed_page(GFP_KERNEL);
338 if (copy_from_user(page, buf, count))
342 if (sscanf(page, "%u", &new_value) != 1)
345 selinux_checkreqprot = new_value ? 1 : 0;
348 free_page((unsigned long) page);
351 static struct file_operations sel_checkreqprot_ops = {
352 .read = sel_read_checkreqprot,
353 .write = sel_write_checkreqprot,
357 * Remaining nodes use transaction based IO methods like nfsd/nfsctl.c
359 static ssize_t sel_write_access(struct file * file, char *buf, size_t size);
360 static ssize_t sel_write_create(struct file * file, char *buf, size_t size);
361 static ssize_t sel_write_relabel(struct file * file, char *buf, size_t size);
362 static ssize_t sel_write_user(struct file * file, char *buf, size_t size);
363 static ssize_t sel_write_member(struct file * file, char *buf, size_t size);
365 static ssize_t (*write_op[])(struct file *, char *, size_t) = {
366 [SEL_ACCESS] = sel_write_access,
367 [SEL_CREATE] = sel_write_create,
368 [SEL_RELABEL] = sel_write_relabel,
369 [SEL_USER] = sel_write_user,
370 [SEL_MEMBER] = sel_write_member,
371 [SEL_CONTEXT] = sel_write_context,
374 static ssize_t selinux_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
376 ino_t ino = file->f_dentry->d_inode->i_ino;
380 if (ino >= ARRAY_SIZE(write_op) || !write_op[ino])
383 data = simple_transaction_get(file, buf, size);
385 return PTR_ERR(data);
387 rv = write_op[ino](file, data, size);
389 simple_transaction_set(file, rv);
395 static struct file_operations transaction_ops = {
396 .write = selinux_transaction_write,
397 .read = simple_transaction_read,
398 .release = simple_transaction_release,
402 * payload - write methods
403 * If the method has a response, the response should be put in buf,
404 * and the length returned. Otherwise return 0 or and -error.
407 static ssize_t sel_write_access(struct file * file, char *buf, size_t size)
413 struct av_decision avd;
416 length = task_has_security(current, SECURITY__COMPUTE_AV);
421 scon = kzalloc(size+1, GFP_KERNEL);
425 tcon = kzalloc(size+1, GFP_KERNEL);
430 if (sscanf(buf, "%s %s %hu %x", scon, tcon, &tclass, &req) != 4)
433 length = security_context_to_sid(scon, strlen(scon)+1, &ssid);
436 length = security_context_to_sid(tcon, strlen(tcon)+1, &tsid);
440 length = security_compute_av(ssid, tsid, tclass, req, &avd);
444 length = scnprintf(buf, SIMPLE_TRANSACTION_LIMIT,
446 avd.allowed, avd.decided,
447 avd.auditallow, avd.auditdeny,
456 static ssize_t sel_write_create(struct file * file, char *buf, size_t size)
459 u32 ssid, tsid, newsid;
465 length = task_has_security(current, SECURITY__COMPUTE_CREATE);
470 scon = kzalloc(size+1, GFP_KERNEL);
474 tcon = kzalloc(size+1, GFP_KERNEL);
479 if (sscanf(buf, "%s %s %hu", scon, tcon, &tclass) != 3)
482 length = security_context_to_sid(scon, strlen(scon)+1, &ssid);
485 length = security_context_to_sid(tcon, strlen(tcon)+1, &tsid);
489 length = security_transition_sid(ssid, tsid, tclass, &newsid);
493 length = security_sid_to_context(newsid, &newcon, &len);
497 if (len > SIMPLE_TRANSACTION_LIMIT) {
498 printk(KERN_ERR "%s: context size (%u) exceeds payload "
499 "max\n", __FUNCTION__, len);
504 memcpy(buf, newcon, len);
515 static ssize_t sel_write_relabel(struct file * file, char *buf, size_t size)
518 u32 ssid, tsid, newsid;
524 length = task_has_security(current, SECURITY__COMPUTE_RELABEL);
529 scon = kzalloc(size+1, GFP_KERNEL);
533 tcon = kzalloc(size+1, GFP_KERNEL);
538 if (sscanf(buf, "%s %s %hu", scon, tcon, &tclass) != 3)
541 length = security_context_to_sid(scon, strlen(scon)+1, &ssid);
544 length = security_context_to_sid(tcon, strlen(tcon)+1, &tsid);
548 length = security_change_sid(ssid, tsid, tclass, &newsid);
552 length = security_sid_to_context(newsid, &newcon, &len);
556 if (len > SIMPLE_TRANSACTION_LIMIT) {
561 memcpy(buf, newcon, len);
572 static ssize_t sel_write_user(struct file * file, char *buf, size_t size)
574 char *con, *user, *ptr;
581 length = task_has_security(current, SECURITY__COMPUTE_USER);
586 con = kzalloc(size+1, GFP_KERNEL);
590 user = kzalloc(size+1, GFP_KERNEL);
595 if (sscanf(buf, "%s %s", con, user) != 2)
598 length = security_context_to_sid(con, strlen(con)+1, &sid);
602 length = security_get_user_sids(sid, user, &sids, &nsids);
606 length = sprintf(buf, "%u", nsids) + 1;
608 for (i = 0; i < nsids; i++) {
609 rc = security_sid_to_context(sids[i], &newcon, &len);
614 if ((length + len) >= SIMPLE_TRANSACTION_LIMIT) {
619 memcpy(ptr, newcon, len);
633 static ssize_t sel_write_member(struct file * file, char *buf, size_t size)
636 u32 ssid, tsid, newsid;
642 length = task_has_security(current, SECURITY__COMPUTE_MEMBER);
647 scon = kzalloc(size+1, GFP_KERNEL);
651 tcon = kzalloc(size+1, GFP_KERNEL);
656 if (sscanf(buf, "%s %s %hu", scon, tcon, &tclass) != 3)
659 length = security_context_to_sid(scon, strlen(scon)+1, &ssid);
662 length = security_context_to_sid(tcon, strlen(tcon)+1, &tsid);
666 length = security_member_sid(ssid, tsid, tclass, &newsid);
670 length = security_sid_to_context(newsid, &newcon, &len);
674 if (len > SIMPLE_TRANSACTION_LIMIT) {
675 printk(KERN_ERR "%s: context size (%u) exceeds payload "
676 "max\n", __FUNCTION__, len);
681 memcpy(buf, newcon, len);
692 static struct inode *sel_make_inode(struct super_block *sb, int mode)
694 struct inode *ret = new_inode(sb);
698 ret->i_uid = ret->i_gid = 0;
699 ret->i_blksize = PAGE_CACHE_SIZE;
701 ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
706 #define BOOL_INO_OFFSET 30
708 static ssize_t sel_read_bool(struct file *filep, char __user *buf,
709 size_t count, loff_t *ppos)
717 mutex_lock(&sel_mutex);
721 /* check to see if this file has been deleted */
725 if (count > PAGE_SIZE) {
729 if (!(page = (char*)get_zeroed_page(GFP_KERNEL))) {
734 inode = filep->f_dentry->d_inode;
735 cur_enforcing = security_get_bool_value(inode->i_ino - BOOL_INO_OFFSET);
736 if (cur_enforcing < 0) {
741 length = scnprintf(page, PAGE_SIZE, "%d %d", cur_enforcing,
742 bool_pending_values[inode->i_ino - BOOL_INO_OFFSET]);
743 ret = simple_read_from_buffer(buf, count, ppos, page, length);
745 mutex_unlock(&sel_mutex);
747 free_page((unsigned long)page);
751 static ssize_t sel_write_bool(struct file *filep, const char __user *buf,
752 size_t count, loff_t *ppos)
755 ssize_t length = -EFAULT;
759 mutex_lock(&sel_mutex);
761 length = task_has_security(current, SECURITY__SETBOOL);
765 /* check to see if this file has been deleted */
769 if (count >= PAGE_SIZE) {
774 /* No partial writes. */
777 page = (char*)get_zeroed_page(GFP_KERNEL);
783 if (copy_from_user(page, buf, count))
787 if (sscanf(page, "%d", &new_value) != 1)
793 inode = filep->f_dentry->d_inode;
794 bool_pending_values[inode->i_ino - BOOL_INO_OFFSET] = new_value;
798 mutex_unlock(&sel_mutex);
800 free_page((unsigned long) page);
804 static struct file_operations sel_bool_ops = {
805 .read = sel_read_bool,
806 .write = sel_write_bool,
809 static ssize_t sel_commit_bools_write(struct file *filep,
810 const char __user *buf,
811 size_t count, loff_t *ppos)
814 ssize_t length = -EFAULT;
817 mutex_lock(&sel_mutex);
819 length = task_has_security(current, SECURITY__SETBOOL);
823 /* check to see if this file has been deleted */
827 if (count >= PAGE_SIZE) {
832 /* No partial writes. */
835 page = (char*)get_zeroed_page(GFP_KERNEL);
841 if (copy_from_user(page, buf, count))
845 if (sscanf(page, "%d", &new_value) != 1)
848 if (new_value && bool_pending_values) {
849 security_set_bools(bool_num, bool_pending_values);
855 mutex_unlock(&sel_mutex);
857 free_page((unsigned long) page);
861 static struct file_operations sel_commit_bools_ops = {
862 .write = sel_commit_bools_write,
865 /* delete booleans - partial revoke() from
866 * fs/proc/generic.c proc_kill_inodes */
867 static void sel_remove_bools(struct dentry *de)
869 struct list_head *p, *node;
870 struct super_block *sb = de->d_sb;
872 spin_lock(&dcache_lock);
873 node = de->d_subdirs.next;
874 while (node != &de->d_subdirs) {
875 struct dentry *d = list_entry(node, struct dentry, d_u.d_child);
880 spin_unlock(&dcache_lock);
882 simple_unlink(de->d_inode, d);
884 spin_lock(&dcache_lock);
886 node = de->d_subdirs.next;
889 spin_unlock(&dcache_lock);
892 list_for_each(p, &sb->s_files) {
893 struct file * filp = list_entry(p, struct file, f_u.fu_list);
894 struct dentry * dentry = filp->f_dentry;
896 if (dentry->d_parent != de) {
904 #define BOOL_DIR_NAME "booleans"
906 static int sel_make_bools(void)
910 struct dentry *dentry = NULL;
911 struct dentry *dir = bool_dir;
912 struct inode *inode = NULL;
913 struct inode_security_struct *isec;
914 char **names = NULL, *page;
919 /* remove any existing files */
920 kfree(bool_pending_values);
921 bool_pending_values = NULL;
923 sel_remove_bools(dir);
925 if (!(page = (char*)get_zeroed_page(GFP_KERNEL)))
928 ret = security_get_bools(&num, &names, &values);
932 for (i = 0; i < num; i++) {
933 dentry = d_alloc_name(dir, names[i]);
938 inode = sel_make_inode(dir->d_sb, S_IFREG | S_IRUGO | S_IWUSR);
944 len = snprintf(page, PAGE_SIZE, "/%s/%s", BOOL_DIR_NAME, names[i]);
948 } else if (len >= PAGE_SIZE) {
952 isec = (struct inode_security_struct*)inode->i_security;
953 if ((ret = security_genfs_sid("selinuxfs", page, SECCLASS_FILE, &sid)))
956 isec->initialized = 1;
957 inode->i_fop = &sel_bool_ops;
958 inode->i_ino = i + BOOL_INO_OFFSET;
959 d_add(dentry, inode);
962 bool_pending_values = values;
964 free_page((unsigned long)page);
966 for (i = 0; i < num; i++)
978 #define NULL_FILE_NAME "null"
980 struct dentry *selinux_null = NULL;
982 static ssize_t sel_read_avc_cache_threshold(struct file *filp, char __user *buf,
983 size_t count, loff_t *ppos)
985 char tmpbuf[TMPBUFLEN];
988 length = scnprintf(tmpbuf, TMPBUFLEN, "%u", avc_cache_threshold);
989 return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
992 static ssize_t sel_write_avc_cache_threshold(struct file * file,
993 const char __user * buf,
994 size_t count, loff_t *ppos)
1001 if (count >= PAGE_SIZE) {
1007 /* No partial writes. */
1012 page = (char*)get_zeroed_page(GFP_KERNEL);
1018 if (copy_from_user(page, buf, count)) {
1023 if (sscanf(page, "%u", &new_value) != 1) {
1028 if (new_value != avc_cache_threshold) {
1029 ret = task_has_security(current, SECURITY__SETSECPARAM);
1032 avc_cache_threshold = new_value;
1036 free_page((unsigned long)page);
1041 static ssize_t sel_read_avc_hash_stats(struct file *filp, char __user *buf,
1042 size_t count, loff_t *ppos)
1047 page = (char *)__get_free_page(GFP_KERNEL);
1052 ret = avc_get_hash_stats(page);
1054 ret = simple_read_from_buffer(buf, count, ppos, page, ret);
1055 free_page((unsigned long)page);
1060 static struct file_operations sel_avc_cache_threshold_ops = {
1061 .read = sel_read_avc_cache_threshold,
1062 .write = sel_write_avc_cache_threshold,
1065 static struct file_operations sel_avc_hash_stats_ops = {
1066 .read = sel_read_avc_hash_stats,
1069 #ifdef CONFIG_SECURITY_SELINUX_AVC_STATS
1070 static struct avc_cache_stats *sel_avc_get_stat_idx(loff_t *idx)
1074 for (cpu = *idx; cpu < NR_CPUS; ++cpu) {
1075 if (!cpu_possible(cpu))
1078 return &per_cpu(avc_cache_stats, cpu);
1083 static void *sel_avc_stats_seq_start(struct seq_file *seq, loff_t *pos)
1085 loff_t n = *pos - 1;
1088 return SEQ_START_TOKEN;
1090 return sel_avc_get_stat_idx(&n);
1093 static void *sel_avc_stats_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1095 return sel_avc_get_stat_idx(pos);
1098 static int sel_avc_stats_seq_show(struct seq_file *seq, void *v)
1100 struct avc_cache_stats *st = v;
1102 if (v == SEQ_START_TOKEN)
1103 seq_printf(seq, "lookups hits misses allocations reclaims "
1106 seq_printf(seq, "%u %u %u %u %u %u\n", st->lookups,
1107 st->hits, st->misses, st->allocations,
1108 st->reclaims, st->frees);
1112 static void sel_avc_stats_seq_stop(struct seq_file *seq, void *v)
1115 static struct seq_operations sel_avc_cache_stats_seq_ops = {
1116 .start = sel_avc_stats_seq_start,
1117 .next = sel_avc_stats_seq_next,
1118 .show = sel_avc_stats_seq_show,
1119 .stop = sel_avc_stats_seq_stop,
1122 static int sel_open_avc_cache_stats(struct inode *inode, struct file *file)
1124 return seq_open(file, &sel_avc_cache_stats_seq_ops);
1127 static struct file_operations sel_avc_cache_stats_ops = {
1128 .open = sel_open_avc_cache_stats,
1130 .llseek = seq_lseek,
1131 .release = seq_release,
1135 static int sel_make_avc_files(struct dentry *dir)
1138 static struct tree_descr files[] = {
1139 { "cache_threshold",
1140 &sel_avc_cache_threshold_ops, S_IRUGO|S_IWUSR },
1141 { "hash_stats", &sel_avc_hash_stats_ops, S_IRUGO },
1142 #ifdef CONFIG_SECURITY_SELINUX_AVC_STATS
1143 { "cache_stats", &sel_avc_cache_stats_ops, S_IRUGO },
1147 for (i = 0; i < ARRAY_SIZE(files); i++) {
1148 struct inode *inode;
1149 struct dentry *dentry;
1151 dentry = d_alloc_name(dir, files[i].name);
1157 inode = sel_make_inode(dir->d_sb, S_IFREG|files[i].mode);
1162 inode->i_fop = files[i].ops;
1163 d_add(dentry, inode);
1172 static int sel_make_dir(struct super_block *sb, struct dentry *dentry)
1175 struct inode *inode;
1177 inode = sel_make_inode(sb, S_IFDIR | S_IRUGO | S_IXUGO);
1182 inode->i_op = &simple_dir_inode_operations;
1183 inode->i_fop = &simple_dir_operations;
1184 /* directory inodes start off with i_nlink == 2 (for "." entry) */
1186 d_add(dentry, inode);
1191 static int sel_fill_super(struct super_block * sb, void * data, int silent)
1194 struct dentry *dentry;
1195 struct inode *inode;
1196 struct inode_security_struct *isec;
1198 static struct tree_descr selinux_files[] = {
1199 [SEL_LOAD] = {"load", &sel_load_ops, S_IRUSR|S_IWUSR},
1200 [SEL_ENFORCE] = {"enforce", &sel_enforce_ops, S_IRUGO|S_IWUSR},
1201 [SEL_CONTEXT] = {"context", &transaction_ops, S_IRUGO|S_IWUGO},
1202 [SEL_ACCESS] = {"access", &transaction_ops, S_IRUGO|S_IWUGO},
1203 [SEL_CREATE] = {"create", &transaction_ops, S_IRUGO|S_IWUGO},
1204 [SEL_RELABEL] = {"relabel", &transaction_ops, S_IRUGO|S_IWUGO},
1205 [SEL_USER] = {"user", &transaction_ops, S_IRUGO|S_IWUGO},
1206 [SEL_POLICYVERS] = {"policyvers", &sel_policyvers_ops, S_IRUGO},
1207 [SEL_COMMIT_BOOLS] = {"commit_pending_bools", &sel_commit_bools_ops, S_IWUSR},
1208 [SEL_MLS] = {"mls", &sel_mls_ops, S_IRUGO},
1209 [SEL_DISABLE] = {"disable", &sel_disable_ops, S_IWUSR},
1210 [SEL_MEMBER] = {"member", &transaction_ops, S_IRUGO|S_IWUGO},
1211 [SEL_CHECKREQPROT] = {"checkreqprot", &sel_checkreqprot_ops, S_IRUGO|S_IWUSR},
1214 ret = simple_fill_super(sb, SELINUX_MAGIC, selinux_files);
1218 dentry = d_alloc_name(sb->s_root, BOOL_DIR_NAME);
1224 ret = sel_make_dir(sb, dentry);
1229 ret = sel_make_bools();
1233 dentry = d_alloc_name(sb->s_root, NULL_FILE_NAME);
1239 inode = sel_make_inode(sb, S_IFCHR | S_IRUGO | S_IWUGO);
1244 isec = (struct inode_security_struct*)inode->i_security;
1245 isec->sid = SECINITSID_DEVNULL;
1246 isec->sclass = SECCLASS_CHR_FILE;
1247 isec->initialized = 1;
1249 init_special_inode(inode, S_IFCHR | S_IRUGO | S_IWUGO, MKDEV(MEM_MAJOR, 3));
1250 d_add(dentry, inode);
1251 selinux_null = dentry;
1253 dentry = d_alloc_name(sb->s_root, "avc");
1259 ret = sel_make_dir(sb, dentry);
1263 ret = sel_make_avc_files(dentry);
1269 printk(KERN_ERR "%s: failed while creating inodes\n", __FUNCTION__);
1273 static struct super_block *sel_get_sb(struct file_system_type *fs_type,
1274 int flags, const char *dev_name, void *data)
1276 return get_sb_single(fs_type, flags, data, sel_fill_super);
1279 static struct file_system_type sel_fs_type = {
1280 .name = "selinuxfs",
1281 .get_sb = sel_get_sb,
1282 .kill_sb = kill_litter_super,
1285 struct vfsmount *selinuxfs_mount;
1287 static int __init init_sel_fs(void)
1291 if (!selinux_enabled)
1293 err = register_filesystem(&sel_fs_type);
1295 selinuxfs_mount = kern_mount(&sel_fs_type);
1296 if (IS_ERR(selinuxfs_mount)) {
1297 printk(KERN_ERR "selinuxfs: could not mount!\n");
1298 err = PTR_ERR(selinuxfs_mount);
1299 selinuxfs_mount = NULL;
1305 __initcall(init_sel_fs);
1307 #ifdef CONFIG_SECURITY_SELINUX_DISABLE
1308 void exit_sel_fs(void)
1310 unregister_filesystem(&sel_fs_type);