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TOMOYO: Remove alias keyword.

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Some programs behave differently depending on argv[0] passed to execve().
TOMOYO has "alias" keyword in order to allow administrators to define different
domains if requested pathname passed to execve() is a symlink. But "alias"
keyword is incomplete because this keyword assumes that requested pathname and
argv[0] are identical. Thus, remove "alias" keyword (by this patch) and add
syntax for checking argv[0] (by future patches).

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Tetsuo Handa
2010-06-21 09:58:53 +09:00
committed by James Morris
parent 7c2ea22e3c
commit 0617c7ff34
5 changed files with 9 additions and 165 deletions
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32
security/tomoyo/common.h
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@@ -53,7 +53,6 @@ enum tomoyo_policy_id {
TOMOYO_ID_DOMAIN_INITIALIZER,
TOMOYO_ID_DOMAIN_KEEPER,
TOMOYO_ID_AGGREGATOR,
TOMOYO_ID_ALIAS,
TOMOYO_ID_GLOBALLY_READABLE,
TOMOYO_ID_PATTERN,
TOMOYO_ID_NO_REWRITE,
@@ -72,7 +71,6 @@ enum tomoyo_group_id {
/* Keywords for ACLs. */
#define TOMOYO_KEYWORD_AGGREGATOR "aggregator "
#define TOMOYO_KEYWORD_ALIAS "alias "
#define TOMOYO_KEYWORD_ALLOW_MOUNT "allow_mount "
#define TOMOYO_KEYWORD_ALLOW_READ "allow_read "
#define TOMOYO_KEYWORD_DELETE "delete "
@@ -682,20 +680,6 @@ struct tomoyo_aggregator_entry {
const struct tomoyo_path_info *aggregated_name;
};
/*
* tomoyo_alias_entry is a structure which is used for holding "alias" entries.
* It has following fields.
*
* (1) "head" is "struct tomoyo_acl_head".
* (2) "original_name" which is a dereferenced pathname.
* (3) "aliased_name" which is a symlink's pathname.
*/
struct tomoyo_alias_entry {
struct tomoyo_acl_head head;
const struct tomoyo_path_info *original_name;
const struct tomoyo_path_info *aliased_name;
};
/*
* tomoyo_policy_manager_entry is a structure which is used for holding list of
* domainnames or programs which are permitted to modify configuration via
@@ -809,8 +793,6 @@ int tomoyo_mount_permission(char *dev_name, struct path *path, char *type,
unsigned long flags, void *data_page);
/* Create "aggregator" entry in exception policy. */
int tomoyo_write_aggregator_policy(char *data, const bool is_delete);
/* Create "alias" entry in exception policy. */
int tomoyo_write_alias_policy(char *data, const bool is_delete);
/*
* Create "initialize_domain" and "no_initialize_domain" entry
* in exception policy.
@@ -868,16 +850,14 @@ void tomoyo_put_number_union(struct tomoyo_number_union *ptr);
char *tomoyo_encode(const char *str);
/*
* Returns realpath(3) of the given pathname but ignores chroot'ed root.
* These functions use kzalloc(), so the caller must call kfree()
* if these functions didn't return NULL.
*/
char *tomoyo_realpath(const char *pathname);
/*
* Same with tomoyo_realpath() except that it doesn't follow the final symlink.
* Returns realpath(3) of the given pathname except that
* ignores chroot'ed root and does not follow the final symlink.
*/
char *tomoyo_realpath_nofollow(const char *pathname);
/* Same with tomoyo_realpath() except that the pathname is already solved. */
/*
* Returns realpath(3) of the given pathname except that
* ignores chroot'ed root and the pathname is already solved.
*/
char *tomoyo_realpath_from_path(struct path *path);
/* Get patterned pathname. */
const char *tomoyo_file_pattern(const struct tomoyo_path_info *filename);