1 files changed, 0 insertions, 461 deletions

diff --git a/ANDROID_3.4.5/security/tomoyo/audit.c b/ANDROID_3.4.5/security/tomoyo/audit.c
deleted file mode 100644
index 7ef9fa3e..00000000
--- a/ANDROID_3.4.5/security/tomoyo/audit.c
+++ /dev/null
@@ -1,461 +0,0 @@
-/*
- * security/tomoyo/audit.c
- *
- * Copyright (C) 2005-2011  NTT DATA CORPORATION
- */
-
-#include "common.h"
-#include <linux/slab.h>
-
-/**
- * tomoyo_print_bprm - Print "struct linux_binprm" for auditing.
- *
- * @bprm: Pointer to "struct linux_binprm".
- * @dump: Pointer to "struct tomoyo_page_dump".
- *
- * Returns the contents of @bprm on success, NULL otherwise.
- *
- * This function uses kzalloc(), so caller must kfree() if this function
- * didn't return NULL.
- */
-static char *tomoyo_print_bprm(struct linux_binprm *bprm,
-			       struct tomoyo_page_dump *dump)
-{
-	static const int tomoyo_buffer_len = 4096 * 2;
-	char *buffer = kzalloc(tomoyo_buffer_len, GFP_NOFS);
-	char *cp;
-	char *last_start;
-	int len;
-	unsigned long pos = bprm->p;
-	int offset = pos % PAGE_SIZE;
-	int argv_count = bprm->argc;
-	int envp_count = bprm->envc;
-	bool truncated = false;
-	if (!buffer)
-		return NULL;
-	len = snprintf(buffer, tomoyo_buffer_len - 1, "argv[]={ ");
-	cp = buffer + len;
-	if (!argv_count) {
-		memmove(cp, "} envp[]={ ", 11);
-		cp += 11;
-	}
-	last_start = cp;
-	while (argv_count || envp_count) {
-		if (!tomoyo_dump_page(bprm, pos, dump))
-			goto out;
-		pos += PAGE_SIZE - offset;
-		/* Read. */
-		while (offset < PAGE_SIZE) {
-			const char *kaddr = dump->data;
-			const unsigned char c = kaddr[offset++];
-			if (cp == last_start)
-				*cp++ = '"';
-			if (cp >= buffer + tomoyo_buffer_len - 32) {
-				/* Reserve some room for "..." string. */
-				truncated = true;
-			} else if (c == '\\') {
-				*cp++ = '\\';
-				*cp++ = '\\';
-			} else if (c > ' ' && c < 127) {
-				*cp++ = c;
-			} else if (!c) {
-				*cp++ = '"';
-				*cp++ = ' ';
-				last_start = cp;
-			} else {
-				*cp++ = '\\';
-				*cp++ = (c >> 6) + '0';
-				*cp++ = ((c >> 3) & 7) + '0';
-				*cp++ = (c & 7) + '0';
-			}
-			if (c)
-				continue;
-			if (argv_count) {
-				if (--argv_count == 0) {
-					if (truncated) {
-						cp = last_start;
-						memmove(cp, "... ", 4);
-						cp += 4;
-					}
-					memmove(cp, "} envp[]={ ", 11);
-					cp += 11;
-					last_start = cp;
-					truncated = false;
-				}
-			} else if (envp_count) {
-				if (--envp_count == 0) {
-					if (truncated) {
-						cp = last_start;
-						memmove(cp, "... ", 4);
-						cp += 4;
-					}
-				}
-			}
-			if (!argv_count && !envp_count)
-				break;
-		}
-		offset = 0;
-	}
-	*cp++ = '}';
-	*cp = '\0';
-	return buffer;
-out:
-	snprintf(buffer, tomoyo_buffer_len - 1,
-		 "argv[]={ ... } envp[]= { ... }");
-	return buffer;
-}
-
-/**
- * tomoyo_filetype - Get string representation of file type.
- *
- * @mode: Mode value for stat().
- *
- * Returns file type string.
- */
-static inline const char *tomoyo_filetype(const umode_t mode)
-{
-	switch (mode & S_IFMT) {
-	case S_IFREG:
-	case 0:
-		return tomoyo_condition_keyword[TOMOYO_TYPE_IS_FILE];
-	case S_IFDIR:
-		return tomoyo_condition_keyword[TOMOYO_TYPE_IS_DIRECTORY];
-	case S_IFLNK:
-		return tomoyo_condition_keyword[TOMOYO_TYPE_IS_SYMLINK];
-	case S_IFIFO:
-		return tomoyo_condition_keyword[TOMOYO_TYPE_IS_FIFO];
-	case S_IFSOCK:
-		return tomoyo_condition_keyword[TOMOYO_TYPE_IS_SOCKET];
-	case S_IFBLK:
-		return tomoyo_condition_keyword[TOMOYO_TYPE_IS_BLOCK_DEV];
-	case S_IFCHR:
-		return tomoyo_condition_keyword[TOMOYO_TYPE_IS_CHAR_DEV];
-	}
-	return "unknown"; /* This should not happen. */
-}
-
-/**
- * tomoyo_print_header - Get header line of audit log.
- *
- * @r: Pointer to "struct tomoyo_request_info".
- *
- * Returns string representation.
- *
- * This function uses kmalloc(), so caller must kfree() if this function
- * didn't return NULL.
- */
-static char *tomoyo_print_header(struct tomoyo_request_info *r)
-{
-	struct tomoyo_time stamp;
-	const pid_t gpid = task_pid_nr(current);
-	struct tomoyo_obj_info *obj = r->obj;
-	static const int tomoyo_buffer_len = 4096;
-	char *buffer = kmalloc(tomoyo_buffer_len, GFP_NOFS);
-	int pos;
-	u8 i;
-	if (!buffer)
-		return NULL;
-	{
-		struct timeval tv;
-		do_gettimeofday(&tv);
-		tomoyo_convert_time(tv.tv_sec, &stamp);
-	}
-	pos = snprintf(buffer, tomoyo_buffer_len - 1,
-		       "#%04u/%02u/%02u %02u:%02u:%02u# profile=%u mode=%s "
-		       "granted=%s (global-pid=%u) task={ pid=%u ppid=%u "
-		       "uid=%u gid=%u euid=%u egid=%u suid=%u sgid=%u "
-		       "fsuid=%u fsgid=%u }", stamp.year, stamp.month,
-		       stamp.day, stamp.hour, stamp.min, stamp.sec, r->profile,
-		       tomoyo_mode[r->mode], tomoyo_yesno(r->granted), gpid,
-		       tomoyo_sys_getpid(), tomoyo_sys_getppid(),
-		       current_uid(), current_gid(), current_euid(),
-		       current_egid(), current_suid(), current_sgid(),
-		       current_fsuid(), current_fsgid());
-	if (!obj)
-		goto no_obj_info;
-	if (!obj->validate_done) {
-		tomoyo_get_attributes(obj);
-		obj->validate_done = true;
-	}
-	for (i = 0; i < TOMOYO_MAX_PATH_STAT; i++) {
-		struct tomoyo_mini_stat *stat;
-		unsigned int dev;
-		umode_t mode;
-		if (!obj->stat_valid[i])
-			continue;
-		stat = &obj->stat[i];
-		dev = stat->dev;
-		mode = stat->mode;
-		if (i & 1) {
-			pos += snprintf(buffer + pos,
-					tomoyo_buffer_len - 1 - pos,
-					" path%u.parent={ uid=%u gid=%u "
-					"ino=%lu perm=0%o }", (i >> 1) + 1,
-					stat->uid, stat->gid, (unsigned long)
-					stat->ino, stat->mode & S_IALLUGO);
-			continue;
-		}
-		pos += snprintf(buffer + pos, tomoyo_buffer_len - 1 - pos,
-				" path%u={ uid=%u gid=%u ino=%lu major=%u"
-				" minor=%u perm=0%o type=%s", (i >> 1) + 1,
-				stat->uid, stat->gid, (unsigned long)
-				stat->ino, MAJOR(dev), MINOR(dev),
-				mode & S_IALLUGO, tomoyo_filetype(mode));
-		if (S_ISCHR(mode) || S_ISBLK(mode)) {
-			dev = stat->rdev;
-			pos += snprintf(buffer + pos,
-					tomoyo_buffer_len - 1 - pos,
-					" dev_major=%u dev_minor=%u",
-					MAJOR(dev), MINOR(dev));
-		}
-		pos += snprintf(buffer + pos, tomoyo_buffer_len - 1 - pos,
-				" }");
-	}
-no_obj_info:
-	if (pos < tomoyo_buffer_len - 1)
-		return buffer;
-	kfree(buffer);
-	return NULL;
-}
-
-/**
- * tomoyo_init_log - Allocate buffer for audit logs.
- *
- * @r:    Pointer to "struct tomoyo_request_info".
- * @len:  Buffer size needed for @fmt and @args.
- * @fmt:  The printf()'s format string.
- * @args: va_list structure for @fmt.
- *
- * Returns pointer to allocated memory.
- *
- * This function uses kzalloc(), so caller must kfree() if this function
- * didn't return NULL.
- */
-char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
-		      va_list args)
-{
-	char *buf = NULL;
-	char *bprm_info = NULL;
-	const char *header = NULL;
-	char *realpath = NULL;
-	const char *symlink = NULL;
-	int pos;
-	const char *domainname = r->domain->domainname->name;
-	header = tomoyo_print_header(r);
-	if (!header)
-		return NULL;
-	/* +10 is for '\n' etc. and '\0'. */
-	len += strlen(domainname) + strlen(header) + 10;
-	if (r->ee) {
-		struct file *file = r->ee->bprm->file;
-		realpath = tomoyo_realpath_from_path(&file->f_path);
-		bprm_info = tomoyo_print_bprm(r->ee->bprm, &r->ee->dump);
-		if (!realpath || !bprm_info)
-			goto out;
-		/* +80 is for " exec={ realpath=\"%s\" argc=%d envc=%d %s }" */
-		len += strlen(realpath) + 80 + strlen(bprm_info);
-	} else if (r->obj && r->obj->symlink_target) {
-		symlink = r->obj->symlink_target->name;
-		/* +18 is for " symlink.target=\"%s\"" */
-		len += 18 + strlen(symlink);
-	}
-	len = tomoyo_round2(len);
-	buf = kzalloc(len, GFP_NOFS);
-	if (!buf)
-		goto out;
-	len--;
-	pos = snprintf(buf, len, "%s", header);
-	if (realpath) {
-		struct linux_binprm *bprm = r->ee->bprm;
-		pos += snprintf(buf + pos, len - pos,
-				" exec={ realpath=\"%s\" argc=%d envc=%d %s }",
-				realpath, bprm->argc, bprm->envc, bprm_info);
-	} else if (symlink)
-		pos += snprintf(buf + pos, len - pos, " symlink.target=\"%s\"",
-				symlink);
-	pos += snprintf(buf + pos, len - pos, "\n%s\n", domainname);
-	vsnprintf(buf + pos, len - pos, fmt, args);
-out:
-	kfree(realpath);
-	kfree(bprm_info);
-	kfree(header);
-	return buf;
-}
-
-/* Wait queue for /sys/kernel/security/tomoyo/audit. */
-static DECLARE_WAIT_QUEUE_HEAD(tomoyo_log_wait);
-
-/* Structure for audit log. */
-struct tomoyo_log {
-	struct list_head list;
-	char *log;
-	int size;
-};
-
-/* The list for "struct tomoyo_log". */
-static LIST_HEAD(tomoyo_log);
-
-/* Lock for "struct list_head tomoyo_log". */
-static DEFINE_SPINLOCK(tomoyo_log_lock);
-
-/* Length of "stuct list_head tomoyo_log". */
-static unsigned int tomoyo_log_count;
-
-/**
- * tomoyo_get_audit - Get audit mode.
- *
- * @ns:          Pointer to "struct tomoyo_policy_namespace".
- * @profile:     Profile number.
- * @index:       Index number of functionality.
- * @is_granted:  True if granted log, false otherwise.
- *
- * Returns true if this request should be audited, false otherwise.
- */
-static bool tomoyo_get_audit(const struct tomoyo_policy_namespace *ns,
-			     const u8 profile, const u8 index,
-			     const struct tomoyo_acl_info *matched_acl,
-			     const bool is_granted)
-{
-	u8 mode;
-	const u8 category = tomoyo_index2category[index] +
-		TOMOYO_MAX_MAC_INDEX;
-	struct tomoyo_profile *p;
-	if (!tomoyo_policy_loaded)
-		return false;
-	p = tomoyo_profile(ns, profile);
-	if (tomoyo_log_count >= p->pref[TOMOYO_PREF_MAX_AUDIT_LOG])
-		return false;
-	if (is_granted && matched_acl && matched_acl->cond &&
-	    matched_acl->cond->grant_log != TOMOYO_GRANTLOG_AUTO)
-		return matched_acl->cond->grant_log == TOMOYO_GRANTLOG_YES;
-	mode = p->config[index];
-	if (mode == TOMOYO_CONFIG_USE_DEFAULT)
-		mode = p->config[category];
-	if (mode == TOMOYO_CONFIG_USE_DEFAULT)
-		mode = p->default_config;
-	if (is_granted)
-		return mode & TOMOYO_CONFIG_WANT_GRANT_LOG;
-	return mode & TOMOYO_CONFIG_WANT_REJECT_LOG;
-}
-
-/**
- * tomoyo_write_log2 - Write an audit log.
- *
- * @r:    Pointer to "struct tomoyo_request_info".
- * @len:  Buffer size needed for @fmt and @args.
- * @fmt:  The printf()'s format string.
- * @args: va_list structure for @fmt.
- *
- * Returns nothing.
- */
-void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
-		       va_list args)
-{
-	char *buf;
-	struct tomoyo_log *entry;
-	bool quota_exceeded = false;
-	if (!tomoyo_get_audit(r->domain->ns, r->profile, r->type,
-			      r->matched_acl, r->granted))
-		goto out;
-	buf = tomoyo_init_log(r, len, fmt, args);
-	if (!buf)
-		goto out;
-	entry = kzalloc(sizeof(*entry), GFP_NOFS);
-	if (!entry) {
-		kfree(buf);
-		goto out;
-	}
-	entry->log = buf;
-	len = tomoyo_round2(strlen(buf) + 1);
-	/*
-	 * The entry->size is used for memory quota checks.
-	 * Don't go beyond strlen(entry->log).
-	 */
-	entry->size = len + tomoyo_round2(sizeof(*entry));
-	spin_lock(&tomoyo_log_lock);
-	if (tomoyo_memory_quota[TOMOYO_MEMORY_AUDIT] &&
-	    tomoyo_memory_used[TOMOYO_MEMORY_AUDIT] + entry->size >=
-	    tomoyo_memory_quota[TOMOYO_MEMORY_AUDIT]) {
-		quota_exceeded = true;
-	} else {
-		tomoyo_memory_used[TOMOYO_MEMORY_AUDIT] += entry->size;
-		list_add_tail(&entry->list, &tomoyo_log);
-		tomoyo_log_count++;
-	}
-	spin_unlock(&tomoyo_log_lock);
-	if (quota_exceeded) {
-		kfree(buf);
-		kfree(entry);
-		goto out;
-	}
-	wake_up(&tomoyo_log_wait);
-out:
-	return;
-}
-
-/**
- * tomoyo_write_log - Write an audit log.
- *
- * @r:   Pointer to "struct tomoyo_request_info".
- * @fmt: The printf()'s format string, followed by parameters.
- *
- * Returns nothing.
- */
-void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
-{
-	va_list args;
-	int len;
-	va_start(args, fmt);
-	len = vsnprintf((char *) &len, 1, fmt, args) + 1;
-	va_end(args);
-	va_start(args, fmt);
-	tomoyo_write_log2(r, len, fmt, args);
-	va_end(args);
-}
-
-/**
- * tomoyo_read_log - Read an audit log.
- *
- * @head: Pointer to "struct tomoyo_io_buffer".
- *
- * Returns nothing.
- */
-void tomoyo_read_log(struct tomoyo_io_buffer *head)
-{
-	struct tomoyo_log *ptr = NULL;
-	if (head->r.w_pos)
-		return;
-	kfree(head->read_buf);
-	head->read_buf = NULL;
-	spin_lock(&tomoyo_log_lock);
-	if (!list_empty(&tomoyo_log)) {
-		ptr = list_entry(tomoyo_log.next, typeof(*ptr), list);
-		list_del(&ptr->list);
-		tomoyo_log_count--;
-		tomoyo_memory_used[TOMOYO_MEMORY_AUDIT] -= ptr->size;
-	}
-	spin_unlock(&tomoyo_log_lock);
-	if (ptr) {
-		head->read_buf = ptr->log;
-		head->r.w[head->r.w_pos++] = head->read_buf;
-		kfree(ptr);
-	}
-}
-
-/**
- * tomoyo_poll_log - Wait for an audit log.
- *
- * @file: Pointer to "struct file".
- * @wait: Pointer to "poll_table". Maybe NULL.
- *
- * Returns POLLIN | POLLRDNORM when ready to read an audit log.
- */
-unsigned int tomoyo_poll_log(struct file *file, poll_table *wait)
-{
-	if (tomoyo_log_count)
-		return POLLIN | POLLRDNORM;
-	poll_wait(file, &tomoyo_log_wait, wait);
-	if (tomoyo_log_count)
-		return POLLIN | POLLRDNORM;
-	return 0;
-}