1 files changed, 0 insertions, 328 deletions
diff --git a/ANDROID_3.4.5/security/tomoyo/realpath.c b/ANDROID_3.4.5/security/tomoyo/realpath.c
deleted file mode 100644
index 80a09c37..00000000
--- a/ANDROID_3.4.5/security/tomoyo/realpath.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * security/tomoyo/realpath.c
- *
- * Copyright (C) 2005-2011  NTT DATA CORPORATION
- */
-
-#include "common.h"
-#include <linux/magic.h>
-
-/**
- * tomoyo_encode2 - Encode binary string to ascii string.
- *
- * @str:     String in binary format.
- * @str_len: Size of @str in byte.
- *
- * Returns pointer to @str in ascii format on success, NULL otherwise.
- *
- * This function uses kzalloc(), so caller must kfree() if this function
- * didn't return NULL.
- */
-char *tomoyo_encode2(const char *str, int str_len)
-{
-	int i;
-	int len = 0;
-	const char *p = str;
-	char *cp;
-	char *cp0;
-
-	if (!p)
-		return NULL;
-	for (i = 0; i < str_len; i++) {
-		const unsigned char c = p[i];
-
-		if (c == '\\')
-			len += 2;
-		else if (c > ' ' && c < 127)
-			len++;
-		else
-			len += 4;
-	}
-	len++;
-	/* Reserve space for appending "/". */
-	cp = kzalloc(len + 10, GFP_NOFS);
-	if (!cp)
-		return NULL;
-	cp0 = cp;
-	p = str;
-	for (i = 0; i < str_len; i++) {
-		const unsigned char c = p[i];
-
-		if (c == '\\') {
-			*cp++ = '\\';
-			*cp++ = '\\';
-		} else if (c > ' ' && c < 127) {
-			*cp++ = c;
-		} else {
-			*cp++ = '\\';
-			*cp++ = (c >> 6) + '0';
-			*cp++ = ((c >> 3) & 7) + '0';
-			*cp++ = (c & 7) + '0';
-		}
-	}
-	return cp0;
-}
-
-/**
- * tomoyo_encode - Encode binary string to ascii string.
- *
- * @str: String in binary format.
- *
- * Returns pointer to @str in ascii format on success, NULL otherwise.
- *
- * This function uses kzalloc(), so caller must kfree() if this function
- * didn't return NULL.
- */
-char *tomoyo_encode(const char *str)
-{
-	return str ? tomoyo_encode2(str, strlen(str)) : NULL;
-}
-
-/**
- * tomoyo_get_absolute_path - Get the path of a dentry but ignores chroot'ed root.
- *
- * @path:   Pointer to "struct path".
- * @buffer: Pointer to buffer to return value in.
- * @buflen: Sizeof @buffer.
- *
- * Returns the buffer on success, an error code otherwise.
- *
- * If dentry is a directory, trailing '/' is appended.
- */
-static char *tomoyo_get_absolute_path(struct path *path, char * const buffer,
-				      const int buflen)
-{
-	char *pos = ERR_PTR(-ENOMEM);
-	if (buflen >= 256) {
-		/* go to whatever namespace root we are under */
-		pos = d_absolute_path(path, buffer, buflen - 1);
-		if (!IS_ERR(pos) && *pos == '/' && pos[1]) {
-			struct inode *inode = path->dentry->d_inode;
-			if (inode && S_ISDIR(inode->i_mode)) {
-				buffer[buflen - 2] = '/';
-				buffer[buflen - 1] = '\0';
-			}
-		}
-	}
-	return pos;
-}
-
-/**
- * tomoyo_get_dentry_path - Get the path of a dentry.
- *
- * @dentry: Pointer to "struct dentry".
- * @buffer: Pointer to buffer to return value in.
- * @buflen: Sizeof @buffer.
- *
- * Returns the buffer on success, an error code otherwise.
- *
- * If dentry is a directory, trailing '/' is appended.
- */
-static char *tomoyo_get_dentry_path(struct dentry *dentry, char * const buffer,
-				    const int buflen)
-{
-	char *pos = ERR_PTR(-ENOMEM);
-	if (buflen >= 256) {
-		pos = dentry_path_raw(dentry, buffer, buflen - 1);
-		if (!IS_ERR(pos) && *pos == '/' && pos[1]) {
-			struct inode *inode = dentry->d_inode;
-			if (inode && S_ISDIR(inode->i_mode)) {
-				buffer[buflen - 2] = '/';
-				buffer[buflen - 1] = '\0';
-			}
-		}
-	}
-	return pos;
-}
-
-/**
- * tomoyo_get_local_path - Get the path of a dentry.
- *
- * @dentry: Pointer to "struct dentry".
- * @buffer: Pointer to buffer to return value in.
- * @buflen: Sizeof @buffer.
- *
- * Returns the buffer on success, an error code otherwise.
- */
-static char *tomoyo_get_local_path(struct dentry *dentry, char * const buffer,
-				   const int buflen)
-{
-	struct super_block *sb = dentry->d_sb;
-	char *pos = tomoyo_get_dentry_path(dentry, buffer, buflen);
-	if (IS_ERR(pos))
-		return pos;
-	/* Convert from $PID to self if $PID is current thread. */
-	if (sb->s_magic == PROC_SUPER_MAGIC && *pos == '/') {
-		char *ep;
-		const pid_t pid = (pid_t) simple_strtoul(pos + 1, &ep, 10);
-		if (*ep == '/' && pid && pid ==
-		    task_tgid_nr_ns(current, sb->s_fs_info)) {
-			pos = ep - 5;
-			if (pos < buffer)
-				goto out;
-			memmove(pos, "/self", 5);
-		}
-		goto prepend_filesystem_name;
-	}
-	/* Use filesystem name for unnamed devices. */
-	if (!MAJOR(sb->s_dev))
-		goto prepend_filesystem_name;
-	{
-		struct inode *inode = sb->s_root->d_inode;
-		/*
-		 * Use filesystem name if filesystem does not support rename()
-		 * operation.
-		 */
-		if (inode->i_op && !inode->i_op->rename)
-			goto prepend_filesystem_name;
-	}
-	/* Prepend device name. */
-	{
-		char name[64];
-		int name_len;
-		const dev_t dev = sb->s_dev;
-		name[sizeof(name) - 1] = '\0';
-		snprintf(name, sizeof(name) - 1, "dev(%u,%u):", MAJOR(dev),
-			 MINOR(dev));
-		name_len = strlen(name);
-		pos -= name_len;
-		if (pos < buffer)
-			goto out;
-		memmove(pos, name, name_len);
-		return pos;
-	}
-	/* Prepend filesystem name. */
-prepend_filesystem_name:
-	{
-		const char *name = sb->s_type->name;
-		const int name_len = strlen(name);
-		pos -= name_len + 1;
-		if (pos < buffer)
-			goto out;
-		memmove(pos, name, name_len);
-		pos[name_len] = ':';
-	}
-	return pos;
-out:
-	return ERR_PTR(-ENOMEM);
-}
-
-/**
- * tomoyo_get_socket_name - Get the name of a socket.
- *
- * @path:   Pointer to "struct path".
- * @buffer: Pointer to buffer to return value in.
- * @buflen: Sizeof @buffer.
- *
- * Returns the buffer.
- */
-static char *tomoyo_get_socket_name(struct path *path, char * const buffer,
-				    const int buflen)
-{
-	struct inode *inode = path->dentry->d_inode;
-	struct socket *sock = inode ? SOCKET_I(inode) : NULL;
-	struct sock *sk = sock ? sock->sk : NULL;
-	if (sk) {
-		snprintf(buffer, buflen, "socket:[family=%u:type=%u:"
-			 "protocol=%u]", sk->sk_family, sk->sk_type,
-			 sk->sk_protocol);
-	} else {
-		snprintf(buffer, buflen, "socket:[unknown]");
-	}
-	return buffer;
-}
-
-/**
- * tomoyo_realpath_from_path - Returns realpath(3) of the given pathname but ignores chroot'ed root.
- *
- * @path: Pointer to "struct path".
- *
- * Returns the realpath of the given @path on success, NULL otherwise.
- *
- * If dentry is a directory, trailing '/' is appended.
- * Characters out of 0x20 < c < 0x7F range are converted to
- * \ooo style octal string.
- * Character \ is converted to \\ string.
- *
- * These functions use kzalloc(), so the caller must call kfree()
- * if these functions didn't return NULL.
- */
-char *tomoyo_realpath_from_path(struct path *path)
-{
-	char *buf = NULL;
-	char *name = NULL;
-	unsigned int buf_len = PAGE_SIZE / 2;
-	struct dentry *dentry = path->dentry;
-	struct super_block *sb;
-	if (!dentry)
-		return NULL;
-	sb = dentry->d_sb;
-	while (1) {
-		char *pos;
-		struct inode *inode;
-		buf_len <<= 1;
-		kfree(buf);
-		buf = kmalloc(buf_len, GFP_NOFS);
-		if (!buf)
-			break;
-		/* To make sure that pos is '\0' terminated. */
-		buf[buf_len - 1] = '\0';
-		/* Get better name for socket. */
-		if (sb->s_magic == SOCKFS_MAGIC) {
-			pos = tomoyo_get_socket_name(path, buf, buf_len - 1);
-			goto encode;
-		}
-		/* For "pipe:[\$]". */
-		if (dentry->d_op && dentry->d_op->d_dname) {
-			pos = dentry->d_op->d_dname(dentry, buf, buf_len - 1);
-			goto encode;
-		}
-		inode = sb->s_root->d_inode;
-		/*
-		 * Get local name for filesystems without rename() operation
-		 * or dentry without vfsmount.
-		 */
-		if (!path->mnt || (inode->i_op && !inode->i_op->rename))
-			pos = tomoyo_get_local_path(path->dentry, buf,
-						    buf_len - 1);
-		/* Get absolute name for the rest. */
-		else {
-			pos = tomoyo_get_absolute_path(path, buf, buf_len - 1);
-			/*
-			 * Fall back to local name if absolute name is not
-			 * available.
-			 */
-			if (pos == ERR_PTR(-EINVAL))
-				pos = tomoyo_get_local_path(path->dentry, buf,
-							    buf_len - 1);
-		}
-encode:
-		if (IS_ERR(pos))
-			continue;
-		name = tomoyo_encode(pos);
-		break;
-	}
-	kfree(buf);
-	if (!name)
-		tomoyo_warn_oom(__func__);
-	return name;
-}
-
-/**
- * tomoyo_realpath_nofollow - Get realpath of a pathname.
- *
- * @pathname: The pathname to solve.
- *
- * Returns the realpath of @pathname on success, NULL otherwise.
- */
-char *tomoyo_realpath_nofollow(const char *pathname)
-{
-	struct path path;
-
-	if (pathname && kern_path(pathname, 0, &path) == 0) {
-		char *buf = tomoyo_realpath_from_path(&path);
-		path_put(&path);
-		return buf;
-	}
-	return NULL;
-}