TOMOYO: Remove unneeded parameter.
tomoyo_path_perm() tomoyo_path2_perm() and tomoyo_check_rewrite_permission()
always receive tomoyo_domain(). We can move it from caller to callee.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index f4d3050..17ed365 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -637,12 +637,10 @@
const struct tomoyo_path_info *filename);
int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
struct path *path, const int flag);
-int tomoyo_path_perm(struct tomoyo_domain_info *domain, const u8 operation,
- struct path *path);
-int tomoyo_path2_perm(struct tomoyo_domain_info *domain, const u8 operation,
- struct path *path1, struct path *path2);
-int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain,
- struct file *filp);
+int tomoyo_path_perm(const u8 operation, struct path *path);
+int tomoyo_path2_perm(const u8 operation, struct path *path1,
+ struct path *path2);
+int tomoyo_check_rewrite_permission(struct file *filp);
int tomoyo_find_next_domain(struct linux_binprm *bprm);
/* Run garbage collector. */
diff --git a/security/tomoyo/file.c b/security/tomoyo/file.c
index 09feaf2..db342ef 100644
--- a/security/tomoyo/file.c
+++ b/security/tomoyo/file.c
@@ -1135,17 +1135,16 @@
/**
* tomoyo_path_perm - Check permission for "create", "unlink", "mkdir", "rmdir", "mkfifo", "mksock", "mkblock", "mkchar", "truncate", "symlink", "ioctl", "chmod", "chown", "chgrp", "chroot", "mount" and "unmount".
*
- * @domain: Pointer to "struct tomoyo_domain_info".
* @operation: Type of operation.
* @path: Pointer to "struct path".
*
* Returns 0 on success, negative value otherwise.
*/
-int tomoyo_path_perm(struct tomoyo_domain_info *domain,
- const u8 operation, struct path *path)
+int tomoyo_path_perm(const u8 operation, struct path *path)
{
int error = -ENOMEM;
struct tomoyo_path_info *buf;
+ struct tomoyo_domain_info *domain = tomoyo_domain();
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
const bool is_enforce = (mode == 3);
int idx;
@@ -1180,15 +1179,14 @@
/**
* tomoyo_check_rewrite_permission - Check permission for "rewrite".
*
- * @domain: Pointer to "struct tomoyo_domain_info".
* @filp: Pointer to "struct file".
*
* Returns 0 on success, negative value otherwise.
*/
-int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain,
- struct file *filp)
+int tomoyo_check_rewrite_permission(struct file *filp)
{
int error = -ENOMEM;
+ struct tomoyo_domain_info *domain = tomoyo_domain();
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
const bool is_enforce = (mode == 3);
struct tomoyo_path_info *buf;
@@ -1217,19 +1215,18 @@
/**
* tomoyo_path2_perm - Check permission for "rename", "link" and "pivot_root".
*
- * @domain: Pointer to "struct tomoyo_domain_info".
* @operation: Type of operation.
* @path1: Pointer to "struct path".
* @path2: Pointer to "struct path".
*
* Returns 0 on success, negative value otherwise.
*/
-int tomoyo_path2_perm(struct tomoyo_domain_info * const domain,
- const u8 operation, struct path *path1,
+int tomoyo_path2_perm(const u8 operation, struct path *path1,
struct path *path2)
{
int error = -ENOMEM;
struct tomoyo_path_info *buf1, *buf2;
+ struct tomoyo_domain_info *domain = tomoyo_domain();
const u8 mode = tomoyo_check_flags(domain, TOMOYO_MAC_FOR_FILE);
const bool is_enforce = (mode == 3);
const char *msg;
diff --git a/security/tomoyo/tomoyo.c b/security/tomoyo/tomoyo.c
index e3945d0..c94e35c 100644
--- a/security/tomoyo/tomoyo.c
+++ b/security/tomoyo/tomoyo.c
@@ -100,33 +100,33 @@
static int tomoyo_path_truncate(struct path *path, loff_t length,
unsigned int time_attrs)
{
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_TRUNCATE, path);
+ return tomoyo_path_perm(TOMOYO_TYPE_TRUNCATE, path);
}
static int tomoyo_path_unlink(struct path *parent, struct dentry *dentry)
{
struct path path = { parent->mnt, dentry };
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_UNLINK, &path);
+ return tomoyo_path_perm(TOMOYO_TYPE_UNLINK, &path);
}
static int tomoyo_path_mkdir(struct path *parent, struct dentry *dentry,
int mode)
{
struct path path = { parent->mnt, dentry };
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_MKDIR, &path);
+ return tomoyo_path_perm(TOMOYO_TYPE_MKDIR, &path);
}
static int tomoyo_path_rmdir(struct path *parent, struct dentry *dentry)
{
struct path path = { parent->mnt, dentry };
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_RMDIR, &path);
+ return tomoyo_path_perm(TOMOYO_TYPE_RMDIR, &path);
}
static int tomoyo_path_symlink(struct path *parent, struct dentry *dentry,
const char *old_name)
{
struct path path = { parent->mnt, dentry };
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_SYMLINK, &path);
+ return tomoyo_path_perm(TOMOYO_TYPE_SYMLINK, &path);
}
static int tomoyo_path_mknod(struct path *parent, struct dentry *dentry,
@@ -149,7 +149,7 @@
type = TOMOYO_TYPE_MKSOCK;
break;
}
- return tomoyo_path_perm(tomoyo_domain(), type, &path);
+ return tomoyo_path_perm(type, &path);
}
static int tomoyo_path_link(struct dentry *old_dentry, struct path *new_dir,
@@ -157,8 +157,7 @@
{
struct path path1 = { new_dir->mnt, old_dentry };
struct path path2 = { new_dir->mnt, new_dentry };
- return tomoyo_path2_perm(tomoyo_domain(), TOMOYO_TYPE_LINK, &path1,
- &path2);
+ return tomoyo_path2_perm(TOMOYO_TYPE_LINK, &path1, &path2);
}
static int tomoyo_path_rename(struct path *old_parent,
@@ -168,15 +167,14 @@
{
struct path path1 = { old_parent->mnt, old_dentry };
struct path path2 = { new_parent->mnt, new_dentry };
- return tomoyo_path2_perm(tomoyo_domain(), TOMOYO_TYPE_RENAME, &path1,
- &path2);
+ return tomoyo_path2_perm(TOMOYO_TYPE_RENAME, &path1, &path2);
}
static int tomoyo_file_fcntl(struct file *file, unsigned int cmd,
unsigned long arg)
{
if (cmd == F_SETFL && ((arg ^ file->f_flags) & O_APPEND))
- return tomoyo_check_rewrite_permission(tomoyo_domain(), file);
+ return tomoyo_check_rewrite_permission(file);
return 0;
}
@@ -196,50 +194,46 @@
static int tomoyo_file_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_IOCTL,
- &file->f_path);
+ return tomoyo_path_perm(TOMOYO_TYPE_IOCTL, &file->f_path);
}
static int tomoyo_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
mode_t mode)
{
struct path path = { mnt, dentry };
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_CHMOD, &path);
+ return tomoyo_path_perm(TOMOYO_TYPE_CHMOD, &path);
}
static int tomoyo_path_chown(struct path *path, uid_t uid, gid_t gid)
{
int error = 0;
if (uid != (uid_t) -1)
- error = tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_CHOWN,
- path);
+ error = tomoyo_path_perm(TOMOYO_TYPE_CHOWN, path);
if (!error && gid != (gid_t) -1)
- error = tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_CHGRP,
- path);
+ error = tomoyo_path_perm(TOMOYO_TYPE_CHGRP, path);
return error;
}
static int tomoyo_path_chroot(struct path *path)
{
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_CHROOT, path);
+ return tomoyo_path_perm(TOMOYO_TYPE_CHROOT, path);
}
static int tomoyo_sb_mount(char *dev_name, struct path *path,
char *type, unsigned long flags, void *data)
{
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_MOUNT, path);
+ return tomoyo_path_perm(TOMOYO_TYPE_MOUNT, path);
}
static int tomoyo_sb_umount(struct vfsmount *mnt, int flags)
{
struct path path = { mnt, mnt->mnt_root };
- return tomoyo_path_perm(tomoyo_domain(), TOMOYO_TYPE_UMOUNT, &path);
+ return tomoyo_path_perm(TOMOYO_TYPE_UMOUNT, &path);
}
static int tomoyo_sb_pivotroot(struct path *old_path, struct path *new_path)
{
- return tomoyo_path2_perm(tomoyo_domain(), TOMOYO_TYPE_PIVOT_ROOT,
- new_path, old_path);
+ return tomoyo_path2_perm(TOMOYO_TYPE_PIVOT_ROOT, new_path, old_path);
}
/*
