[linux-2.6-block.git] / security / integrity / ima / ima_fs.c

/*
 * Copyright (C) 2005,2006,2007,2008 IBM Corporation
 *
 * Authors:
 * Kylene Hall <kjhall@us.ibm.com>
 * Reiner Sailer <sailer@us.ibm.com>
 * Mimi Zohar <zohar@us.ibm.com>
 *
 * 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.
 *
 * File: ima_fs.c
 *	implemenents security file system for reporting
 *	current measurement list and IMA statistics
 */
#include <linux/fcntl.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/rculist.h>
#include <linux/rcupdate.h>
#include <linux/parser.h>

#include "ima.h"

static int valid_policy = 1;
#define TMPBUFLEN 12
static ssize_t ima_show_htable_value(char __user *buf, size_t count,
				     loff_t *ppos, atomic_long_t *val)
{
	char tmpbuf[TMPBUFLEN];
	ssize_t len;

	len = scnprintf(tmpbuf, TMPBUFLEN, "%li\n", atomic_long_read(val));
	return simple_read_from_buffer(buf, count, ppos, tmpbuf, len);
}

static ssize_t ima_show_htable_violations(struct file *filp,
					  char __user *buf,
					  size_t count, loff_t *ppos)
{
	return ima_show_htable_value(buf, count, ppos, &ima_htable.violations);
}

static const struct file_operations ima_htable_violations_ops = {
	.read = ima_show_htable_violations,
	.llseek = generic_file_llseek,
};

static ssize_t ima_show_measurements_count(struct file *filp,
					   char __user *buf,
					   size_t count, loff_t *ppos)
{
	return ima_show_htable_value(buf, count, ppos, &ima_htable.len);

}

static const struct file_operations ima_measurements_count_ops = {
	.read = ima_show_measurements_count,
	.llseek = generic_file_llseek,
};

/* returns pointer to hlist_node */
static void *ima_measurements_start(struct seq_file *m, loff_t *pos)
{
	loff_t l = *pos;
	struct ima_queue_entry *qe;

	/* we need a lock since pos could point beyond last element */
	rcu_read_lock();
	list_for_each_entry_rcu(qe, &ima_measurements, later) {
		if (!l--) {
			rcu_read_unlock();
			return qe;
		}
	}
	rcu_read_unlock();
	return NULL;
}

static void *ima_measurements_next(struct seq_file *m, void *v, loff_t *pos)
{
	struct ima_queue_entry *qe = v;

	/* lock protects when reading beyond last element
	 * against concurrent list-extension
	 */
	rcu_read_lock();
	qe = list_entry_rcu(qe->later.next, struct ima_queue_entry, later);
	rcu_read_unlock();
	(*pos)++;

	return (&qe->later == &ima_measurements) ? NULL : qe;
}

static void ima_measurements_stop(struct seq_file *m, void *v)
{
}

void ima_putc(struct seq_file *m, void *data, int datalen)
{
	while (datalen--)
		seq_putc(m, *(char *)data++);
}

/* print format:
 *       32bit-le=pcr#
 *       char[20]=template digest
 *       32bit-le=template name size
 *       char[n]=template name
 *       [eventdata length]
 *       eventdata[n]=template specific data
 */
static int ima_measurements_show(struct seq_file *m, void *v)
{
	/* the list never shrinks, so we don't need a lock here */
	struct ima_queue_entry *qe = v;
	struct ima_template_entry *e;
	int namelen;
	u32 pcr = CONFIG_IMA_MEASURE_PCR_IDX;
	bool is_ima_template = false;
	int i;

	/* get entry */
	e = qe->entry;
	if (e == NULL)
		return -1;

	/*
	 * 1st: PCRIndex
	 * PCR used is always the same (config option) in
	 * little-endian format
	 */
	ima_putc(m, &pcr, sizeof pcr);

	/* 2nd: template digest */
	ima_putc(m, e->digest, TPM_DIGEST_SIZE);

	/* 3rd: template name size */
	namelen = strlen(e->template_desc->name);
	ima_putc(m, &namelen, sizeof namelen);

	/* 4th:  template name */
	ima_putc(m, e->template_desc->name, namelen);

	/* 5th:  template length (except for 'ima' template) */
	if (strcmp(e->template_desc->name, IMA_TEMPLATE_IMA_NAME) == 0)
		is_ima_template = true;

	if (!is_ima_template)
		ima_putc(m, &e->template_data_len,
			 sizeof(e->template_data_len));

	/* 6th:  template specific data */
	for (i = 0; i < e->template_desc->num_fields; i++) {
		enum ima_show_type show = IMA_SHOW_BINARY;
		struct ima_template_field *field = e->template_desc->fields[i];

		if (is_ima_template && strcmp(field->field_id, "d") == 0)
			show = IMA_SHOW_BINARY_NO_FIELD_LEN;
		field->field_show(m, show, &e->template_data[i]);
	}
	return 0;
}

static const struct seq_operations ima_measurments_seqops = {
	.start = ima_measurements_start,
	.next = ima_measurements_next,
	.stop = ima_measurements_stop,
	.show = ima_measurements_show
};

static int ima_measurements_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &ima_measurments_seqops);
}

static const struct file_operations ima_measurements_ops = {
	.open = ima_measurements_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release,
};

void ima_print_digest(struct seq_file *m, u8 *digest, int size)
{
	int i;

	for (i = 0; i < size; i++)
		seq_printf(m, "%02x", *(digest + i));
}

/* print in ascii */
static int ima_ascii_measurements_show(struct seq_file *m, void *v)
{
	/* the list never shrinks, so we don't need a lock here */
	struct ima_queue_entry *qe = v;
	struct ima_template_entry *e;
	int i;

	/* get entry */
	e = qe->entry;
	if (e == NULL)
		return -1;

	/* 1st: PCR used (config option) */
	seq_printf(m, "%2d ", CONFIG_IMA_MEASURE_PCR_IDX);

	/* 2nd: SHA1 template hash */
	ima_print_digest(m, e->digest, TPM_DIGEST_SIZE);

	/* 3th:  template name */
	seq_printf(m, " %s", e->template_desc->name);

	/* 4th:  template specific data */
	for (i = 0; i < e->template_desc->num_fields; i++) {
		seq_puts(m, " ");
		if (e->template_data[i].len == 0)
			continue;

		e->template_desc->fields[i]->field_show(m, IMA_SHOW_ASCII,
							&e->template_data[i]);
	}
	seq_puts(m, "\n");
	return 0;
}

static const struct seq_operations ima_ascii_measurements_seqops = {
	.start = ima_measurements_start,
	.next = ima_measurements_next,
	.stop = ima_measurements_stop,
	.show = ima_ascii_measurements_show
};

static int ima_ascii_measurements_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &ima_ascii_measurements_seqops);
}

static const struct file_operations ima_ascii_measurements_ops = {
	.open = ima_ascii_measurements_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release,
};

static ssize_t ima_write_policy(struct file *file, const char __user *buf,
				size_t datalen, loff_t *ppos)
{
	char *data = NULL;
	ssize_t result;

	if (datalen >= PAGE_SIZE)
		datalen = PAGE_SIZE - 1;

	/* No partial writes. */
	result = -EINVAL;
	if (*ppos != 0)
		goto out;

	result = -ENOMEM;
	data = kmalloc(datalen + 1, GFP_KERNEL);
	if (!data)
		goto out;

	*(data + datalen) = '\0';

	result = -EFAULT;
	if (copy_from_user(data, buf, datalen))
		goto out;

	result = ima_parse_add_rule(data);
out:
	if (result < 0)
		valid_policy = 0;
	kfree(data);
	return result;
}

static struct dentry *ima_dir;
static struct dentry *binary_runtime_measurements;
static struct dentry *ascii_runtime_measurements;
static struct dentry *runtime_measurements_count;
static struct dentry *violations;
static struct dentry *ima_policy;

static atomic_t policy_opencount = ATOMIC_INIT(1);
/*
 * ima_open_policy: sequentialize access to the policy file
 */
static int ima_open_policy(struct inode * inode, struct file * filp)
{
	/* No point in being allowed to open it if you aren't going to write */
	if (!(filp->f_flags & O_WRONLY))
		return -EACCES;
	if (atomic_dec_and_test(&policy_opencount))
		return 0;
	return -EBUSY;
}

/*
 * ima_release_policy - start using the new measure policy rules.
 *
 * Initially, ima_measure points to the default policy rules, now
 * point to the new policy rules, and remove the securityfs policy file,
 * assuming a valid policy.
 */
static int ima_release_policy(struct inode *inode, struct file *file)
{
	if (!valid_policy) {
		ima_delete_rules();
		valid_policy = 1;
		atomic_set(&policy_opencount, 1);
		return 0;
	}
	ima_update_policy();
	securityfs_remove(ima_policy);
	ima_policy = NULL;
	return 0;
}

static const struct file_operations ima_measure_policy_ops = {
	.open = ima_open_policy,
	.write = ima_write_policy,
	.release = ima_release_policy,
	.llseek = generic_file_llseek,
};

int __init ima_fs_init(void)
{
	ima_dir = securityfs_create_dir("ima", NULL);
	if (IS_ERR(ima_dir))
		return -1;

	binary_runtime_measurements =
	    securityfs_create_file("binary_runtime_measurements",
				   S_IRUSR | S_IRGRP, ima_dir, NULL,
				   &ima_measurements_ops);
	if (IS_ERR(binary_runtime_measurements))
		goto out;

	ascii_runtime_measurements =
	    securityfs_create_file("ascii_runtime_measurements",
				   S_IRUSR | S_IRGRP, ima_dir, NULL,
				   &ima_ascii_measurements_ops);
	if (IS_ERR(ascii_runtime_measurements))
		goto out;

	runtime_measurements_count =
	    securityfs_create_file("runtime_measurements_count",
				   S_IRUSR | S_IRGRP, ima_dir, NULL,
				   &ima_measurements_count_ops);
	if (IS_ERR(runtime_measurements_count))
		goto out;

	violations =
	    securityfs_create_file("violations", S_IRUSR | S_IRGRP,
				   ima_dir, NULL, &ima_htable_violations_ops);
	if (IS_ERR(violations))
		goto out;

	ima_policy = securityfs_create_file("policy",
					    S_IWUSR,
					    ima_dir, NULL,
					    &ima_measure_policy_ops);
	if (IS_ERR(ima_policy))
		goto out;

	return 0;
out:
	securityfs_remove(violations);
	securityfs_remove(runtime_measurements_count);
	securityfs_remove(ascii_runtime_measurements);
	securityfs_remove(binary_runtime_measurements);
	securityfs_remove(ima_dir);
	securityfs_remove(ima_policy);
	return -1;
}
Commit	Line	Data
bab73937 MZ	1	/*
	2	* Copyright (C) 2005,2006,2007,2008 IBM Corporation
	3	*
	4	* Authors:
	5	* Kylene Hall <kjhall@us.ibm.com>
	6	* Reiner Sailer <sailer@us.ibm.com>
	7	* Mimi Zohar <zohar@us.ibm.com>
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License as
	11	* published by the Free Software Foundation, version 2 of the
	12	* License.
	13	*
	14	* File: ima_fs.c
	15	* implemenents security file system for reporting
	16	* current measurement list and IMA statistics
	17	*/
f850a7c0	18	#include <linux/fcntl.h>
5a0e3ad6	19	#include <linux/slab.h>
bab73937 MZ	20	#include <linux/module.h>
	21	#include <linux/seq_file.h>
	22	#include <linux/rculist.h>
	23	#include <linux/rcupdate.h>
4af4662f	24	#include <linux/parser.h>
bab73937 MZ	25
	26	#include "ima.h"
	27
4af4662f	28	static int valid_policy = 1;
bab73937 MZ	29	#define TMPBUFLEN 12
	30	static ssize_t ima_show_htable_value(char __user *buf, size_t count,
	31	loff_t ppos, atomic_long_t val)
	32	{
	33	char tmpbuf[TMPBUFLEN];
	34	ssize_t len;
	35
	36	len = scnprintf(tmpbuf, TMPBUFLEN, "%li\n", atomic_long_read(val));
	37	return simple_read_from_buffer(buf, count, ppos, tmpbuf, len);
	38	}
	39
	40	static ssize_t ima_show_htable_violations(struct file *filp,
	41	char __user *buf,
	42	size_t count, loff_t *ppos)
	43	{
	44	return ima_show_htable_value(buf, count, ppos, &ima_htable.violations);
	45	}
	46
828c0950	47	static const struct file_operations ima_htable_violations_ops = {
cdcd90f9 AB	48	.read = ima_show_htable_violations,
cdcd90f9 AB	49	.llseek = generic_file_llseek,
bab73937 MZ	50	};
	51
	52	static ssize_t ima_show_measurements_count(struct file *filp,
	53	char __user *buf,
	54	size_t count, loff_t *ppos)
	55	{
	56	return ima_show_htable_value(buf, count, ppos, &ima_htable.len);
	57
	58	}
	59
828c0950	60	static const struct file_operations ima_measurements_count_ops = {
cdcd90f9 AB	61	.read = ima_show_measurements_count,
cdcd90f9 AB	62	.llseek = generic_file_llseek,
bab73937 MZ	63	};
	64
	65	/* returns pointer to hlist_node */
	66	static void ima_measurements_start(struct seq_file m, loff_t *pos)
	67	{
	68	loff_t l = *pos;
	69	struct ima_queue_entry *qe;
	70
	71	/* we need a lock since pos could point beyond last element */
	72	rcu_read_lock();
	73	list_for_each_entry_rcu(qe, &ima_measurements, later) {
	74	if (!l--) {
	75	rcu_read_unlock();
	76	return qe;
	77	}
	78	}
	79	rcu_read_unlock();
	80	return NULL;
	81	}
	82
	83	static void ima_measurements_next(struct seq_file m, void v, loff_t pos)
	84	{
	85	struct ima_queue_entry *qe = v;
	86
	87	/* lock protects when reading beyond last element
	88	* against concurrent list-extension
	89	*/
	90	rcu_read_lock();
089bc8e9	91	qe = list_entry_rcu(qe->later.next, struct ima_queue_entry, later);
bab73937 MZ	92	rcu_read_unlock();
	93	(*pos)++;
	94
	95	return (&qe->later == &ima_measurements) ? NULL : qe;
	96	}
	97
	98	static void ima_measurements_stop(struct seq_file m, void v)
	99	{
	100	}
	101
3ce1217d	102	void ima_putc(struct seq_file m, void data, int datalen)
bab73937 MZ	103	{
	104	while (datalen--)
	105	seq_putc(m, (char )data++);
	106	}
	107
	108	/* print format:
	109	* 32bit-le=pcr#
	110	* char[20]=template digest
	111	* 32bit-le=template name size
	112	* char[n]=template name
a71dc65d	113	* [eventdata length]
bab73937 MZ	114	* eventdata[n]=template specific data
	115	*/
	116	static int ima_measurements_show(struct seq_file m, void v)
	117	{
	118	/* the list never shrinks, so we don't need a lock here */
	119	struct ima_queue_entry *qe = v;
	120	struct ima_template_entry *e;
	121	int namelen;
	122	u32 pcr = CONFIG_IMA_MEASURE_PCR_IDX;
3e8e5503	123	bool is_ima_template = false;
a71dc65d	124	int i;
bab73937 MZ	125
	126	/* get entry */
	127	e = qe->entry;
	128	if (e == NULL)
	129	return -1;
	130
	131	/*
	132	* 1st: PCRIndex
	133	* PCR used is always the same (config option) in
	134	* little-endian format
	135	*/
	136	ima_putc(m, &pcr, sizeof pcr);
	137
	138	/* 2nd: template digest */
140d8022	139	ima_putc(m, e->digest, TPM_DIGEST_SIZE);
bab73937 MZ	140
bab73937 MZ	141	/* 3rd: template name size */
a71dc65d	142	namelen = strlen(e->template_desc->name);
bab73937 MZ	143	ima_putc(m, &namelen, sizeof namelen);
	144
	145	/* 4th: template name */
a71dc65d RS	146	ima_putc(m, e->template_desc->name, namelen);
	147
	148	/* 5th: template length (except for 'ima' template) */
3e8e5503 RS	149	if (strcmp(e->template_desc->name, IMA_TEMPLATE_IMA_NAME) == 0)
	150	is_ima_template = true;
	151
	152	if (!is_ima_template)
a71dc65d RS	153	ima_putc(m, &e->template_data_len,
a71dc65d RS	154	sizeof(e->template_data_len));
bab73937	155
a71dc65d RS	156	/* 6th: template specific data */
a71dc65d RS	157	for (i = 0; i < e->template_desc->num_fields; i++) {
3e8e5503 RS	158	enum ima_show_type show = IMA_SHOW_BINARY;
	159	struct ima_template_field *field = e->template_desc->fields[i];
	160
	161	if (is_ima_template && strcmp(field->field_id, "d") == 0)
	162	show = IMA_SHOW_BINARY_NO_FIELD_LEN;
	163	field->field_show(m, show, &e->template_data[i]);
a71dc65d	164	}
bab73937 MZ	165	return 0;
	166	}
	167
88e9d34c	168	static const struct seq_operations ima_measurments_seqops = {
bab73937 MZ	169	.start = ima_measurements_start,
	170	.next = ima_measurements_next,
	171	.stop = ima_measurements_stop,
	172	.show = ima_measurements_show
	173	};
	174
	175	static int ima_measurements_open(struct inode inode, struct file file)
	176	{
	177	return seq_open(file, &ima_measurments_seqops);
	178	}
	179
828c0950	180	static const struct file_operations ima_measurements_ops = {
bab73937 MZ	181	.open = ima_measurements_open,
	182	.read = seq_read,
	183	.llseek = seq_lseek,
	184	.release = seq_release,
	185	};
	186
3ce1217d	187	void ima_print_digest(struct seq_file m, u8 digest, int size)
bab73937 MZ	188	{
	189	int i;
	190
140d8022	191	for (i = 0; i < size; i++)
bab73937 MZ	192	seq_printf(m, "%02x", *(digest + i));
	193	}
	194
bab73937 MZ	195	/* print in ascii */
	196	static int ima_ascii_measurements_show(struct seq_file m, void v)
	197	{
	198	/* the list never shrinks, so we don't need a lock here */
	199	struct ima_queue_entry *qe = v;
	200	struct ima_template_entry *e;
a71dc65d	201	int i;
bab73937 MZ	202
	203	/* get entry */
	204	e = qe->entry;
	205	if (e == NULL)
	206	return -1;
	207
	208	/* 1st: PCR used (config option) */
	209	seq_printf(m, "%2d ", CONFIG_IMA_MEASURE_PCR_IDX);
	210
	211	/* 2nd: SHA1 template hash */
140d8022	212	ima_print_digest(m, e->digest, TPM_DIGEST_SIZE);
bab73937 MZ	213
bab73937 MZ	214	/* 3th: template name */
a71dc65d	215	seq_printf(m, " %s", e->template_desc->name);
bab73937 MZ	216
bab73937 MZ	217	/* 4th: template specific data */
a71dc65d RS	218	for (i = 0; i < e->template_desc->num_fields; i++) {
	219	seq_puts(m, " ");
	220	if (e->template_data[i].len == 0)
	221	continue;
	222
	223	e->template_desc->fields[i]->field_show(m, IMA_SHOW_ASCII,
	224	&e->template_data[i]);
	225	}
	226	seq_puts(m, "\n");
bab73937 MZ	227	return 0;
	228	}
	229
88e9d34c	230	static const struct seq_operations ima_ascii_measurements_seqops = {
bab73937 MZ	231	.start = ima_measurements_start,
	232	.next = ima_measurements_next,
	233	.stop = ima_measurements_stop,
	234	.show = ima_ascii_measurements_show
	235	};
	236
	237	static int ima_ascii_measurements_open(struct inode inode, struct file file)
	238	{
	239	return seq_open(file, &ima_ascii_measurements_seqops);
	240	}
	241
828c0950	242	static const struct file_operations ima_ascii_measurements_ops = {
bab73937 MZ	243	.open = ima_ascii_measurements_open,
	244	.read = seq_read,
	245	.llseek = seq_lseek,
	246	.release = seq_release,
	247	};
	248
4af4662f MZ	249	static ssize_t ima_write_policy(struct file file, const char __user buf,
	250	size_t datalen, loff_t *ppos)
	251	{
6ccd0456 EP	252	char *data = NULL;
6ccd0456 EP	253	ssize_t result;
4af4662f MZ	254
4af4662f MZ	255	if (datalen >= PAGE_SIZE)
6ccd0456 EP	256	datalen = PAGE_SIZE - 1;
	257
	258	/* No partial writes. */
	259	result = -EINVAL;
	260	if (*ppos != 0)
	261	goto out;
	262
	263	result = -ENOMEM;
4af4662f MZ	264	data = kmalloc(datalen + 1, GFP_KERNEL);
4af4662f MZ	265	if (!data)
6ccd0456	266	goto out;
4af4662f	267
4af4662f	268	*(data + datalen) = '\0';
4af4662f	269
6ccd0456 EP	270	result = -EFAULT;
	271	if (copy_from_user(data, buf, datalen))
	272	goto out;
	273
	274	result = ima_parse_add_rule(data);
	275	out:
	276	if (result < 0)
	277	valid_policy = 0;
4af4662f	278	kfree(data);
6ccd0456	279	return result;
4af4662f MZ	280	}
4af4662f MZ	281
bab73937 MZ	282	static struct dentry *ima_dir;
	283	static struct dentry *binary_runtime_measurements;
	284	static struct dentry *ascii_runtime_measurements;
	285	static struct dentry *runtime_measurements_count;
	286	static struct dentry *violations;
4af4662f MZ	287	static struct dentry *ima_policy;
4af4662f MZ	288
f4bd857b MZ	289	static atomic_t policy_opencount = ATOMIC_INIT(1);
	290	/*
	291	* ima_open_policy: sequentialize access to the policy file
	292	*/
b97e1452	293	static int ima_open_policy(struct inode * inode, struct file * filp)
f4bd857b	294	{
f850a7c0 EP	295	/* No point in being allowed to open it if you aren't going to write */
	296	if (!(filp->f_flags & O_WRONLY))
	297	return -EACCES;
f4bd857b MZ	298	if (atomic_dec_and_test(&policy_opencount))
	299	return 0;
	300	return -EBUSY;
	301	}
	302
4af4662f MZ	303	/*
	304	* ima_release_policy - start using the new measure policy rules.
	305	*
	306	* Initially, ima_measure points to the default policy rules, now
f4bd857b MZ	307	* point to the new policy rules, and remove the securityfs policy file,
f4bd857b MZ	308	* assuming a valid policy.
4af4662f MZ	309	*/
	310	static int ima_release_policy(struct inode inode, struct file file)
	311	{
	312	if (!valid_policy) {
	313	ima_delete_rules();
f4bd857b MZ	314	valid_policy = 1;
f4bd857b MZ	315	atomic_set(&policy_opencount, 1);
4af4662f MZ	316	return 0;
	317	}
	318	ima_update_policy();
	319	securityfs_remove(ima_policy);
	320	ima_policy = NULL;
	321	return 0;
	322	}
	323
828c0950	324	static const struct file_operations ima_measure_policy_ops = {
f4bd857b	325	.open = ima_open_policy,
4af4662f	326	.write = ima_write_policy,
cdcd90f9 AB	327	.release = ima_release_policy,
cdcd90f9 AB	328	.llseek = generic_file_llseek,
4af4662f	329	};
bab73937	330
932995f0	331	int __init ima_fs_init(void)
bab73937 MZ	332	{
	333	ima_dir = securityfs_create_dir("ima", NULL);
	334	if (IS_ERR(ima_dir))
	335	return -1;
	336
	337	binary_runtime_measurements =
	338	securityfs_create_file("binary_runtime_measurements",
	339	S_IRUSR \| S_IRGRP, ima_dir, NULL,
	340	&ima_measurements_ops);
	341	if (IS_ERR(binary_runtime_measurements))
	342	goto out;
	343
	344	ascii_runtime_measurements =
	345	securityfs_create_file("ascii_runtime_measurements",
	346	S_IRUSR \| S_IRGRP, ima_dir, NULL,
	347	&ima_ascii_measurements_ops);
	348	if (IS_ERR(ascii_runtime_measurements))
	349	goto out;
	350
	351	runtime_measurements_count =
	352	securityfs_create_file("runtime_measurements_count",
	353	S_IRUSR \| S_IRGRP, ima_dir, NULL,
	354	&ima_measurements_count_ops);
	355	if (IS_ERR(runtime_measurements_count))
	356	goto out;
	357
	358	violations =
	359	securityfs_create_file("violations", S_IRUSR \| S_IRGRP,
	360	ima_dir, NULL, &ima_htable_violations_ops);
	361	if (IS_ERR(violations))
	362	goto out;
	363
4af4662f	364	ima_policy = securityfs_create_file("policy",
f850a7c0	365	S_IWUSR,
4af4662f MZ	366	ima_dir, NULL,
	367	&ima_measure_policy_ops);
	368	if (IS_ERR(ima_policy))
	369	goto out;
bab73937	370
4af4662f	371	return 0;
bab73937	372	out:
0ea4f8ae	373	securityfs_remove(violations);
bab73937 MZ	374	securityfs_remove(runtime_measurements_count);
	375	securityfs_remove(ascii_runtime_measurements);
	376	securityfs_remove(binary_runtime_measurements);
	377	securityfs_remove(ima_dir);
4af4662f	378	securityfs_remove(ima_policy);
bab73937 MZ	379	return -1;
bab73937 MZ	380	}