Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 557 deletions

diff --git a/ANDROID_3.4.5/security/smack/smack_access.c b/ANDROID_3.4.5/security/smack/smack_access.c
deleted file mode 100644
index c8115f73..00000000
--- a/ANDROID_3.4.5/security/smack/smack_access.c
+++ /dev/null
@@ -1,557 +0,0 @@
-/*
- * Copyright (C) 2007 Casey Schaufler <casey@schaufler-ca.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.
- *
- * Author:
- *      Casey Schaufler <casey@schaufler-ca.com>
- *
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/sched.h>
-#include "smack.h"
-
-struct smack_known smack_known_huh = {
-	.smk_known	= "?",
-	.smk_secid	= 2,
-	.smk_cipso	= NULL,
-};
-
-struct smack_known smack_known_hat = {
-	.smk_known	= "^",
-	.smk_secid	= 3,
-	.smk_cipso	= NULL,
-};
-
-struct smack_known smack_known_star = {
-	.smk_known	= "*",
-	.smk_secid	= 4,
-	.smk_cipso	= NULL,
-};
-
-struct smack_known smack_known_floor = {
-	.smk_known	= "_",
-	.smk_secid	= 5,
-	.smk_cipso	= NULL,
-};
-
-struct smack_known smack_known_invalid = {
-	.smk_known	= "",
-	.smk_secid	= 6,
-	.smk_cipso	= NULL,
-};
-
-struct smack_known smack_known_web = {
-	.smk_known	= "@",
-	.smk_secid	= 7,
-	.smk_cipso	= NULL,
-};
-
-LIST_HEAD(smack_known_list);
-
-/*
- * The initial value needs to be bigger than any of the
- * known values above.
- */
-static u32 smack_next_secid = 10;
-
-/*
- * what events do we log
- * can be overwritten at run-time by /smack/logging
- */
-int log_policy = SMACK_AUDIT_DENIED;
-
-/**
- * smk_access_entry - look up matching access rule
- * @subject_label: a pointer to the subject's Smack label
- * @object_label: a pointer to the object's Smack label
- * @rule_list: the list of rules to search
- *
- * This function looks up the subject/object pair in the
- * access rule list and returns the access mode. If no
- * entry is found returns -ENOENT.
- *
- * NOTE:
- *
- * Earlier versions of this function allowed for labels that
- * were not on the label list. This was done to allow for
- * labels to come over the network that had never been seen
- * before on this host. Unless the receiving socket has the
- * star label this will always result in a failure check. The
- * star labeled socket case is now handled in the networking
- * hooks so there is no case where the label is not on the
- * label list. Checking to see if the address of two labels
- * is the same is now a reliable test.
- *
- * Do the object check first because that is more
- * likely to differ.
- */
-int smk_access_entry(char *subject_label, char *object_label,
-			struct list_head *rule_list)
-{
-	int may = -ENOENT;
-	struct smack_rule *srp;
-
-	list_for_each_entry_rcu(srp, rule_list, list) {
-		if (srp->smk_object == object_label &&
-		    srp->smk_subject == subject_label) {
-			may = srp->smk_access;
-			break;
-		}
-	}
-
-	return may;
-}
-
-/**
- * smk_access - determine if a subject has a specific access to an object
- * @subject_label: a pointer to the subject's Smack label
- * @object_label: a pointer to the object's Smack label
- * @request: the access requested, in "MAY" format
- * @a : a pointer to the audit data
- *
- * This function looks up the subject/object pair in the
- * access rule list and returns 0 if the access is permitted,
- * non zero otherwise.
- *
- * Smack labels are shared on smack_list
- */
-int smk_access(char *subject_label, char *object_label, int request,
-	       struct smk_audit_info *a)
-{
-	struct smack_known *skp;
-	int may = MAY_NOT;
-	int rc = 0;
-
-	/*
-	 * Hardcoded comparisons.
-	 *
-	 * A star subject can't access any object.
-	 */
-	if (subject_label == smack_known_star.smk_known) {
-		rc = -EACCES;
-		goto out_audit;
-	}
-	/*
-	 * An internet object can be accessed by any subject.
-	 * Tasks cannot be assigned the internet label.
-	 * An internet subject can access any object.
-	 */
-	if (object_label == smack_known_web.smk_known ||
-	    subject_label == smack_known_web.smk_known)
-		goto out_audit;
-	/*
-	 * A star object can be accessed by any subject.
-	 */
-	if (object_label == smack_known_star.smk_known)
-		goto out_audit;
-	/*
-	 * An object can be accessed in any way by a subject
-	 * with the same label.
-	 */
-	if (subject_label == object_label)
-		goto out_audit;
-	/*
-	 * A hat subject can read any object.
-	 * A floor object can be read by any subject.
-	 */
-	if ((request & MAY_ANYREAD) == request) {
-		if (object_label == smack_known_floor.smk_known)
-			goto out_audit;
-		if (subject_label == smack_known_hat.smk_known)
-			goto out_audit;
-	}
-	/*
-	 * Beyond here an explicit relationship is required.
-	 * If the requested access is contained in the available
-	 * access (e.g. read is included in readwrite) it's
-	 * good. A negative response from smk_access_entry()
-	 * indicates there is no entry for this pair.
-	 */
-	skp = smk_find_entry(subject_label);
-	rcu_read_lock();
-	may = smk_access_entry(subject_label, object_label, &skp->smk_rules);
-	rcu_read_unlock();
-
-	if (may > 0 && (request & may) == request)
-		goto out_audit;
-
-	rc = -EACCES;
-out_audit:
-#ifdef CONFIG_AUDIT
-	if (a)
-		smack_log(subject_label, object_label, request, rc, a);
-#endif
-	return rc;
-}
-
-/**
- * smk_curacc - determine if current has a specific access to an object
- * @obj_label: a pointer to the object's Smack label
- * @mode: the access requested, in "MAY" format
- * @a : common audit data
- *
- * This function checks the current subject label/object label pair
- * in the access rule list and returns 0 if the access is permitted,
- * non zero otherwise. It allows that current may have the capability
- * to override the rules.
- */
-int smk_curacc(char *obj_label, u32 mode, struct smk_audit_info *a)
-{
-	struct task_smack *tsp = current_security();
-	char *sp = smk_of_task(tsp);
-	int may;
-	int rc;
-
-	/*
-	 * Check the global rule list
-	 */
-	rc = smk_access(sp, obj_label, mode, NULL);
-	if (rc == 0) {
-		/*
-		 * If there is an entry in the task's rule list
-		 * it can further restrict access.
-		 */
-		may = smk_access_entry(sp, obj_label, &tsp->smk_rules);
-		if (may < 0)
-			goto out_audit;
-		if ((mode & may) == mode)
-			goto out_audit;
-		rc = -EACCES;
-	}
-
-	/*
-	 * Return if a specific label has been designated as the
-	 * only one that gets privilege and current does not
-	 * have that label.
-	 */
-	if (smack_onlycap != NULL && smack_onlycap != sp)
-		goto out_audit;
-
-	if (capable(CAP_MAC_OVERRIDE))
-		rc = 0;
-
-out_audit:
-#ifdef CONFIG_AUDIT
-	if (a)
-		smack_log(sp, obj_label, mode, rc, a);
-#endif
-	return rc;
-}
-
-#ifdef CONFIG_AUDIT
-/**
- * smack_str_from_perm : helper to transalate an int to a
- * readable string
- * @string : the string to fill
- * @access : the int
- *
- */
-static inline void smack_str_from_perm(char *string, int access)
-{
-	int i = 0;
-	if (access & MAY_READ)
-		string[i++] = 'r';
-	if (access & MAY_WRITE)
-		string[i++] = 'w';
-	if (access & MAY_EXEC)
-		string[i++] = 'x';
-	if (access & MAY_APPEND)
-		string[i++] = 'a';
-	string[i] = '\0';
-}
-/**
- * smack_log_callback - SMACK specific information
- * will be called by generic audit code
- * @ab : the audit_buffer
- * @a  : audit_data
- *
- */
-static void smack_log_callback(struct audit_buffer *ab, void *a)
-{
-	struct common_audit_data *ad = a;
-	struct smack_audit_data *sad = ad->smack_audit_data;
-	audit_log_format(ab, "lsm=SMACK fn=%s action=%s",
-			 ad->smack_audit_data->function,
-			 sad->result ? "denied" : "granted");
-	audit_log_format(ab, " subject=");
-	audit_log_untrustedstring(ab, sad->subject);
-	audit_log_format(ab, " object=");
-	audit_log_untrustedstring(ab, sad->object);
-	audit_log_format(ab, " requested=%s", sad->request);
-}
-
-/**
- *  smack_log - Audit the granting or denial of permissions.
- *  @subject_label : smack label of the requester
- *  @object_label  : smack label of the object being accessed
- *  @request: requested permissions
- *  @result: result from smk_access
- *  @a:  auxiliary audit data
- *
- * Audit the granting or denial of permissions in accordance
- * with the policy.
- */
-void smack_log(char *subject_label, char *object_label, int request,
-	       int result, struct smk_audit_info *ad)
-{
-	char request_buffer[SMK_NUM_ACCESS_TYPE + 1];
-	struct smack_audit_data *sad;
-	struct common_audit_data *a = &ad->a;
-
-	/* check if we have to log the current event */
-	if (result != 0 && (log_policy & SMACK_AUDIT_DENIED) == 0)
-		return;
-	if (result == 0 && (log_policy & SMACK_AUDIT_ACCEPT) == 0)
-		return;
-
-	sad = a->smack_audit_data;
-
-	if (sad->function == NULL)
-		sad->function = "unknown";
-
-	/* end preparing the audit data */
-	smack_str_from_perm(request_buffer, request);
-	sad->subject = subject_label;
-	sad->object  = object_label;
-	sad->request = request_buffer;
-	sad->result  = result;
-
-	common_lsm_audit(a, smack_log_callback, NULL);
-}
-#else /* #ifdef CONFIG_AUDIT */
-void smack_log(char *subject_label, char *object_label, int request,
-               int result, struct smk_audit_info *ad)
-{
-}
-#endif
-
-static DEFINE_MUTEX(smack_known_lock);
-
-/**
- * smk_find_entry - find a label on the list, return the list entry
- * @string: a text string that might be a Smack label
- *
- * Returns a pointer to the entry in the label list that
- * matches the passed string.
- */
-struct smack_known *smk_find_entry(const char *string)
-{
-	struct smack_known *skp;
-
-	list_for_each_entry_rcu(skp, &smack_known_list, list) {
-		if (strncmp(skp->smk_known, string, SMK_MAXLEN) == 0)
-			return skp;
-	}
-
-	return NULL;
-}
-
-/**
- * smk_parse_smack - parse smack label from a text string
- * @string: a text string that might contain a Smack label
- * @len: the maximum size, or zero if it is NULL terminated.
- * @smack: parsed smack label, or NULL if parse error
- */
-void smk_parse_smack(const char *string, int len, char *smack)
-{
-	int found;
-	int i;
-
-	if (len <= 0 || len > SMK_MAXLEN)
-		len = SMK_MAXLEN;
-
-	for (i = 0, found = 0; i < SMK_LABELLEN; i++) {
-		if (found)
-			smack[i] = '\0';
-		else if (i >= len || string[i] > '~' || string[i] <= ' ' ||
-			 string[i] == '/' || string[i] == '"' ||
-			 string[i] == '\\' || string[i] == '\'') {
-			smack[i] = '\0';
-			found = 1;
-		} else
-			smack[i] = string[i];
-	}
-}
-
-/**
- * smk_import_entry - import a label, return the list entry
- * @string: a text string that might be a Smack label
- * @len: the maximum size, or zero if it is NULL terminated.
- *
- * Returns a pointer to the entry in the label list that
- * matches the passed string, adding it if necessary.
- */
-struct smack_known *smk_import_entry(const char *string, int len)
-{
-	struct smack_known *skp;
-	char smack[SMK_LABELLEN];
-
-	smk_parse_smack(string, len, smack);
-	if (smack[0] == '\0')
-		return NULL;
-
-	mutex_lock(&smack_known_lock);
-
-	skp = smk_find_entry(smack);
-
-	if (skp == NULL) {
-		skp = kzalloc(sizeof(struct smack_known), GFP_KERNEL);
-		if (skp != NULL) {
-			strncpy(skp->smk_known, smack, SMK_MAXLEN);
-			skp->smk_secid = smack_next_secid++;
-			skp->smk_cipso = NULL;
-			INIT_LIST_HEAD(&skp->smk_rules);
-			spin_lock_init(&skp->smk_cipsolock);
-			mutex_init(&skp->smk_rules_lock);
-			/*
-			 * Make sure that the entry is actually
-			 * filled before putting it on the list.
-			 */
-			list_add_rcu(&skp->list, &smack_known_list);
-		}
-	}
-
-	mutex_unlock(&smack_known_lock);
-
-	return skp;
-}
-
-/**
- * smk_import - import a smack label
- * @string: a text string that might be a Smack label
- * @len: the maximum size, or zero if it is NULL terminated.
- *
- * Returns a pointer to the label in the label list that
- * matches the passed string, adding it if necessary.
- */
-char *smk_import(const char *string, int len)
-{
-	struct smack_known *skp;
-
-	/* labels cannot begin with a '-' */
-	if (string[0] == '-')
-		return NULL;
-	skp = smk_import_entry(string, len);
-	if (skp == NULL)
-		return NULL;
-	return skp->smk_known;
-}
-
-/**
- * smack_from_secid - find the Smack label associated with a secid
- * @secid: an integer that might be associated with a Smack label
- *
- * Returns a pointer to the appropriate Smack label if there is one,
- * otherwise a pointer to the invalid Smack label.
- */
-char *smack_from_secid(const u32 secid)
-{
-	struct smack_known *skp;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(skp, &smack_known_list, list) {
-		if (skp->smk_secid == secid) {
-			rcu_read_unlock();
-			return skp->smk_known;
-		}
-	}
-
-	/*
-	 * If we got this far someone asked for the translation
-	 * of a secid that is not on the list.
-	 */
-	rcu_read_unlock();
-	return smack_known_invalid.smk_known;
-}
-
-/**
- * smack_to_secid - find the secid associated with a Smack label
- * @smack: the Smack label
- *
- * Returns the appropriate secid if there is one,
- * otherwise 0
- */
-u32 smack_to_secid(const char *smack)
-{
-	struct smack_known *skp;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(skp, &smack_known_list, list) {
-		if (strncmp(skp->smk_known, smack, SMK_MAXLEN) == 0) {
-			rcu_read_unlock();
-			return skp->smk_secid;
-		}
-	}
-	rcu_read_unlock();
-	return 0;
-}
-
-/**
- * smack_from_cipso - find the Smack label associated with a CIPSO option
- * @level: Bell & LaPadula level from the network
- * @cp: Bell & LaPadula categories from the network
- *
- * This is a simple lookup in the label table.
- *
- * Return the matching label from the label list or NULL.
- */
-char *smack_from_cipso(u32 level, char *cp)
-{
-	struct smack_known *kp;
-	char *final = NULL;
-
-	rcu_read_lock();
-	list_for_each_entry(kp, &smack_known_list, list) {
-		if (kp->smk_cipso == NULL)
-			continue;
-
-		spin_lock_bh(&kp->smk_cipsolock);
-
-		if (kp->smk_cipso->smk_level == level &&
-		    memcmp(kp->smk_cipso->smk_catset, cp, SMK_LABELLEN) == 0)
-			final = kp->smk_known;
-
-		spin_unlock_bh(&kp->smk_cipsolock);
-
-		if (final != NULL)
-			break;
-	}
-	rcu_read_unlock();
-
-	return final;
-}
-
-/**
- * smack_to_cipso - find the CIPSO option to go with a Smack label
- * @smack: a pointer to the smack label in question
- * @cp: where to put the result
- *
- * Returns zero if a value is available, non-zero otherwise.
- */
-int smack_to_cipso(const char *smack, struct smack_cipso *cp)
-{
-	struct smack_known *kp;
-	int found = 0;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(kp, &smack_known_list, list) {
-		if (kp->smk_known == smack ||
-		    strcmp(kp->smk_known, smack) == 0) {
-			found = 1;
-			break;
-		}
-	}
-	rcu_read_unlock();
-
-	if (found == 0 || kp->smk_cipso == NULL)
-		return -ENOENT;
-
-	memcpy(cp, kp->smk_cipso, sizeof(struct smack_cipso));
-	return 0;
-}