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TOMOYO: Use common code for domain transition control. 

Use common code for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
"no_keep_domain" keywords.

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 11:14:39 +09:00 committed by James Morris
parent 0617c7ff34
commit 5448ec4f50
6 changed files with 160 additions and 306 deletions
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55
security/tomoyo/common.c
View File

@ -1150,6 +1150,15 @@ static void tomoyo_read_pid(struct tomoyo_io_buffer *head)
}
}
static const char *tomoyo_transition_type[TOMOYO_MAX_TRANSITION_TYPE] = {
[TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE]
= TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN,
[TOMOYO_TRANSITION_CONTROL_INITIALIZE]
= TOMOYO_KEYWORD_INITIALIZE_DOMAIN,
[TOMOYO_TRANSITION_CONTROL_NO_KEEP] = TOMOYO_KEYWORD_NO_KEEP_DOMAIN,
[TOMOYO_TRANSITION_CONTROL_KEEP] = TOMOYO_KEYWORD_KEEP_DOMAIN
};
/**
* tomoyo_write_exception_policy - Write exception policy.
*
@ -1163,18 +1172,13 @@ static int tomoyo_write_exception_policy(struct tomoyo_io_buffer *head)
{
char *data = head->write_buf;
bool is_delete = tomoyo_str_starts(&data, TOMOYO_KEYWORD_DELETE);
u8 i;
if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_KEEP_DOMAIN))
return tomoyo_write_domain_keeper_policy(data, false,
is_delete);
if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_NO_KEEP_DOMAIN))
return tomoyo_write_domain_keeper_policy(data, true, is_delete);
if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_INITIALIZE_DOMAIN))
return tomoyo_write_domain_initializer_policy(data, false,
is_delete);
if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN))
return tomoyo_write_domain_initializer_policy(data, true,
is_delete);
for (i = 0; i < TOMOYO_MAX_TRANSITION_TYPE; i++) {
if (tomoyo_str_starts(&data, tomoyo_transition_type[i]))
return tomoyo_write_transition_control(data, is_delete,
i);
}
if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_AGGREGATOR))
return tomoyo_write_aggregator_policy(data, is_delete);
if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_ALLOW_READ))
@ -1296,32 +1300,17 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx)
if (acl->is_deleted)
continue;
switch (idx) {
case TOMOYO_ID_DOMAIN_KEEPER:
case TOMOYO_ID_TRANSITION_CONTROL:
{
struct tomoyo_domain_keeper_entry *ptr =
struct tomoyo_transition_control *ptr =
container_of(acl, typeof(*ptr), head);
w[0] = ptr->is_not ?
TOMOYO_KEYWORD_NO_KEEP_DOMAIN :
TOMOYO_KEYWORD_KEEP_DOMAIN;
if (ptr->program) {
w[0] = tomoyo_transition_type[ptr->type];
if (ptr->program)
w[1] = ptr->program->name;
w[2] = " from ";
}
w[3] = ptr->domainname->name;
}
break;
case TOMOYO_ID_DOMAIN_INITIALIZER:
{
struct tomoyo_domain_initializer_entry *ptr =
container_of(acl, typeof(*ptr), head);
w[0] = ptr->is_not ?
TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN :
TOMOYO_KEYWORD_INITIALIZE_DOMAIN;
w[1] = ptr->program->name;
if (ptr->domainname) {
w[2] = " from ";
if (ptr->domainname)
w[3] = ptr->domainname->name;
}
if (w[1][0] && w[3][0])
w[2] = " from ";
}
break;
case TOMOYO_ID_GLOBALLY_READABLE:

64
security/tomoyo/common.h
View File

@ -50,8 +50,7 @@ enum tomoyo_policy_id {
TOMOYO_ID_GROUP,
TOMOYO_ID_PATH_GROUP,
TOMOYO_ID_NUMBER_GROUP,
TOMOYO_ID_DOMAIN_INITIALIZER,
TOMOYO_ID_DOMAIN_KEEPER,
TOMOYO_ID_TRANSITION_CONTROL,
TOMOYO_ID_AGGREGATOR,
TOMOYO_ID_GLOBALLY_READABLE,
TOMOYO_ID_PATTERN,
@ -97,6 +96,15 @@ enum tomoyo_group_id {
#define TOMOYO_VALUE_TYPE_OCTAL 2
#define TOMOYO_VALUE_TYPE_HEXADECIMAL 3
enum tomoyo_transition_type {
/* Do not change this order, */
TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE,
TOMOYO_TRANSITION_CONTROL_INITIALIZE,
TOMOYO_TRANSITION_CONTROL_NO_KEEP,
TOMOYO_TRANSITION_CONTROL_KEEP,
TOMOYO_MAX_TRANSITION_TYPE
};
/* Index numbers for Access Controls. */
enum tomoyo_acl_entry_type_index {
TOMOYO_TYPE_PATH_ACL,
@ -619,50 +627,26 @@ struct tomoyo_no_rewrite_entry {
};
/*
* tomoyo_domain_initializer_entry is a structure which is used for holding
* "initialize_domain" and "no_initialize_domain" entries.
* tomoyo_transition_control is a structure which is used for holding
* "initialize_domain"/"no_initialize_domain"/"keep_domain"/"no_keep_domain"
* entries.
* It has following fields.
*
* (1) "head" is "struct tomoyo_acl_head".
* (2) "is_not" is a bool which is true if "no_initialize_domain", false
* otherwise.
* (3) "is_last_name" is a bool which is true if "domainname" is "the last
* component of a domainname", false otherwise.
* (4) "domainname" which is "a domainname" or "the last component of a
* domainname". This field is NULL if "from" clause is not specified.
* (5) "program" which is a program's pathname.
*/
struct tomoyo_domain_initializer_entry {
struct tomoyo_acl_head head;
bool is_not; /* True if this entry is "no_initialize_domain". */
/* True if the domainname is tomoyo_get_last_name(). */
bool is_last_name;
const struct tomoyo_path_info *domainname; /* This may be NULL */
const struct tomoyo_path_info *program;
};
/*
* tomoyo_domain_keeper_entry is a structure which is used for holding
* "keep_domain" and "no_keep_domain" entries.
* It has following fields.
*
* (1) "head" is "struct tomoyo_acl_head".
* (2) "is_not" is a bool which is true if "no_initialize_domain", false
* otherwise.
* (2) "type" is type of this entry.
* (3) "is_last_name" is a bool which is true if "domainname" is "the last
* component of a domainname", false otherwise.
* (4) "domainname" which is "a domainname" or "the last component of a
* domainname".
* (5) "program" which is a program's pathname.
* This field is NULL if "from" clause is not specified.
*/
struct tomoyo_domain_keeper_entry {
struct tomoyo_transition_control {
struct tomoyo_acl_head head;
bool is_not; /* True if this entry is "no_keep_domain". */
u8 type; /* One of values in "enum tomoyo_transition_type". */
/* True if the domainname is tomoyo_get_last_name(). */
bool is_last_name;
const struct tomoyo_path_info *domainname;
const struct tomoyo_path_info *program; /* This may be NULL */
const struct tomoyo_path_info *domainname; /* Maybe NULL */
const struct tomoyo_path_info *program; /* Maybe NULL */
};
/*
@ -793,15 +777,8 @@ 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 "initialize_domain" and "no_initialize_domain" entry
* in exception policy.
*/
int tomoyo_write_domain_initializer_policy(char *data, const bool is_not,
const bool is_delete);
/* Create "keep_domain" and "no_keep_domain" entry in exception policy. */
int tomoyo_write_domain_keeper_policy(char *data, const bool is_not,
const bool is_delete);
int tomoyo_write_transition_control(char *data, const bool is_delete,
const u8 type);
/*
* Create "allow_read/write", "allow_execute", "allow_read", "allow_write",
* "allow_create", "allow_unlink", "allow_mkdir", "allow_rmdir",
@ -922,6 +899,7 @@ int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
void tomoyo_check_acl(struct tomoyo_request_info *r,
bool (*check_entry) (const struct tomoyo_request_info *,
const struct tomoyo_acl_info *));
const char *tomoyo_last_word(const char *name);
/********** External variable definitions. **********/

318
security/tomoyo/domain.c
View File

@ -150,173 +150,39 @@ const char *tomoyo_get_last_name(const struct tomoyo_domain_info *domain)
return cp0;
}
static bool tomoyo_same_domain_initializer_entry(const struct tomoyo_acl_head *
static bool tomoyo_same_transition_control_entry(const struct tomoyo_acl_head *
a,
const struct tomoyo_acl_head *
b)
{
const struct tomoyo_domain_initializer_entry *p1 =
container_of(a, typeof(*p1), head);
const struct tomoyo_domain_initializer_entry *p2 =
container_of(b, typeof(*p2), head);
return p1->is_not == p2->is_not && p1->is_last_name == p2->is_last_name
const struct tomoyo_transition_control *p1 = container_of(a,
typeof(*p1),
head);
const struct tomoyo_transition_control *p2 = container_of(b,
typeof(*p2),
head);
return p1->type == p2->type && p1->is_last_name == p2->is_last_name
&& p1->domainname == p2->domainname
&& p1->program == p2->program;
}
/**
* tomoyo_update_domain_initializer_entry - Update "struct tomoyo_domain_initializer_entry" list.
* tomoyo_update_transition_control_entry - Update "struct tomoyo_transition_control" list.
*
* @domainname: The name of domain. May be NULL.
* @program: The name of program.
* @is_not: True if it is "no_initialize_domain" entry.
* @domainname: The name of domain. Maybe NULL.
* @program: The name of program. Maybe NULL.
* @type: Type of transition.
* @is_delete: True if it is a delete request.
*
* Returns 0 on success, negative value otherwise.
*
* Caller holds tomoyo_read_lock().
*/
static int tomoyo_update_domain_initializer_entry(const char *domainname,
static int tomoyo_update_transition_control_entry(const char *domainname,
const char *program,
const bool is_not,
const u8 type,
const bool is_delete)
{
struct tomoyo_domain_initializer_entry e = { .is_not = is_not };
struct tomoyo_transition_control e = { .type = type };
int error = is_delete ? -ENOENT : -ENOMEM;
if (!tomoyo_correct_path(program))
return -EINVAL;
if (domainname) {
if (!tomoyo_domain_def(domainname) &&
tomoyo_correct_path(domainname))
e.is_last_name = true;
else if (!tomoyo_correct_domain(domainname))
return -EINVAL;
e.domainname = tomoyo_get_name(domainname);
if (!e.domainname)
goto out;
}
e.program = tomoyo_get_name(program);
if (!e.program)
goto out;
error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
&tomoyo_policy_list
[TOMOYO_ID_DOMAIN_INITIALIZER],
tomoyo_same_domain_initializer_entry);
out:
tomoyo_put_name(e.domainname);
tomoyo_put_name(e.program);
return error;
}
/**
* tomoyo_write_domain_initializer_policy - Write "struct tomoyo_domain_initializer_entry" list.
*
* @data: String to parse.
* @is_not: True if it is "no_initialize_domain" entry.
* @is_delete: True if it is a delete request.
*
* Returns 0 on success, negative value otherwise.
*
* Caller holds tomoyo_read_lock().
*/
int tomoyo_write_domain_initializer_policy(char *data, const bool is_not,
const bool is_delete)
{
char *cp = strstr(data, " from ");
if (cp) {
*cp = '\0';
return tomoyo_update_domain_initializer_entry(cp + 6, data,
is_not,
is_delete);
}
return tomoyo_update_domain_initializer_entry(NULL, data, is_not,
is_delete);
}
/**
* tomoyo_domain_initializer - Check whether the given program causes domainname reinitialization.
*
* @domainname: The name of domain.
* @program: The name of program.
* @last_name: The last component of @domainname.
*
* Returns true if executing @program reinitializes domain transition,
* false otherwise.
*
* Caller holds tomoyo_read_lock().
*/
static bool tomoyo_domain_initializer(const struct tomoyo_path_info *
domainname,
const struct tomoyo_path_info *program,
const struct tomoyo_path_info *
last_name)
{
struct tomoyo_domain_initializer_entry *ptr;
bool flag = false;
list_for_each_entry_rcu(ptr, &tomoyo_policy_list
[TOMOYO_ID_DOMAIN_INITIALIZER], head.list) {
if (ptr->head.is_deleted)
continue;
if (ptr->domainname) {
if (!ptr->is_last_name) {
if (ptr->domainname != domainname)
continue;
} else {
if (tomoyo_pathcmp(ptr->domainname, last_name))
continue;
}
}
if (tomoyo_pathcmp(ptr->program, program))
continue;
if (ptr->is_not) {
flag = false;
break;
}
flag = true;
}
return flag;
}
static bool tomoyo_same_domain_keeper_entry(const struct tomoyo_acl_head *a,
const struct tomoyo_acl_head *b)
{
const struct tomoyo_domain_keeper_entry *p1 =
container_of(a, typeof(*p1), head);
const struct tomoyo_domain_keeper_entry *p2 =
container_of(b, typeof(*p2), head);
return p1->is_not == p2->is_not && p1->is_last_name == p2->is_last_name
&& p1->domainname == p2->domainname
&& p1->program == p2->program;
}
/**
* tomoyo_update_domain_keeper_entry - Update "struct tomoyo_domain_keeper_entry" list.
*
* @domainname: The name of domain.
* @program: The name of program. May be NULL.
* @is_not: True if it is "no_keep_domain" entry.
* @is_delete: True if it is a delete request.
*
* Returns 0 on success, negative value otherwise.
*
* Caller holds tomoyo_read_lock().
*/
static int tomoyo_update_domain_keeper_entry(const char *domainname,
const char *program,
const bool is_not,
const bool is_delete)
{
struct tomoyo_domain_keeper_entry e = { .is_not = is_not };
int error = is_delete ? -ENOENT : -ENOMEM;
if (!tomoyo_domain_def(domainname) &&
tomoyo_correct_path(domainname))
e.is_last_name = true;
else if (!tomoyo_correct_domain(domainname))
return -EINVAL;
if (program) {
if (!tomoyo_correct_path(program))
return -EINVAL;
@ -324,13 +190,20 @@ static int tomoyo_update_domain_keeper_entry(const char *domainname,
if (!e.program)
goto out;
}
e.domainname = tomoyo_get_name(domainname);
if (!e.domainname)
goto out;
if (domainname) {
if (!tomoyo_correct_domain(domainname)) {
if (!tomoyo_correct_path(domainname))
goto out;
e.is_last_name = true;
}
e.domainname = tomoyo_get_name(domainname);
if (!e.domainname)
goto out;
}
error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
&tomoyo_policy_list
[TOMOYO_ID_DOMAIN_KEEPER],
tomoyo_same_domain_keeper_entry);
[TOMOYO_ID_TRANSITION_CONTROL],
tomoyo_same_transition_control_entry);
out:
tomoyo_put_name(e.domainname);
tomoyo_put_name(e.program);
@ -338,67 +211,85 @@ static int tomoyo_update_domain_keeper_entry(const char *domainname,
}
/**
* tomoyo_write_domain_keeper_policy - Write "struct tomoyo_domain_keeper_entry" list.
* tomoyo_write_transition_control - Write "struct tomoyo_transition_control" list.
*
* @data: String to parse.
* @is_not: True if it is "no_keep_domain" entry.
* @is_delete: True if it is a delete request.
* @type: Type of this entry.
*
* Caller holds tomoyo_read_lock().
* Returns 0 on success, negative value otherwise.
*/
int tomoyo_write_domain_keeper_policy(char *data, const bool is_not,
const bool is_delete)
int tomoyo_write_transition_control(char *data, const bool is_delete,
const u8 type)
{
char *cp = strstr(data, " from ");
if (cp) {
*cp = '\0';
return tomoyo_update_domain_keeper_entry(cp + 6, data, is_not,
is_delete);
char *domainname = strstr(data, " from ");
if (domainname) {
*domainname = '\0';
domainname += 6;
} else if (type == TOMOYO_TRANSITION_CONTROL_NO_KEEP ||
type == TOMOYO_TRANSITION_CONTROL_KEEP) {
domainname = data;
data = NULL;
}
return tomoyo_update_domain_keeper_entry(data, NULL, is_not, is_delete);
return tomoyo_update_transition_control_entry(domainname, data, type,
is_delete);
}
/**
* tomoyo_domain_keeper - Check whether the given program causes domain transition suppression.
* tomoyo_transition_type - Get domain transition type.
*
* @domainname: The name of domain.
* @program: The name of program.
* @last_name: The last component of @domainname.
*
* Returns true if executing @program supresses domain transition,
* false otherwise.
* Returns TOMOYO_TRANSITION_CONTROL_INITIALIZE if executing @program
* reinitializes domain transition, TOMOYO_TRANSITION_CONTROL_KEEP if executing
* @program suppresses domain transition, others otherwise.
*
* Caller holds tomoyo_read_lock().
*/
static bool tomoyo_domain_keeper(const struct tomoyo_path_info *domainname,
const struct tomoyo_path_info *program,
const struct tomoyo_path_info *last_name)
static u8 tomoyo_transition_type(const struct tomoyo_path_info *domainname,
const struct tomoyo_path_info *program)
{
struct tomoyo_domain_keeper_entry *ptr;
bool flag = false;
list_for_each_entry_rcu(ptr,
&tomoyo_policy_list[TOMOYO_ID_DOMAIN_KEEPER],
head.list) {
if (ptr->head.is_deleted)
continue;
if (!ptr->is_last_name) {
if (ptr->domainname != domainname)
const struct tomoyo_transition_control *ptr;
const char *last_name = tomoyo_last_word(domainname->name);
u8 type;
for (type = 0; type < TOMOYO_MAX_TRANSITION_TYPE; type++) {
next:
list_for_each_entry_rcu(ptr, &tomoyo_policy_list
[TOMOYO_ID_TRANSITION_CONTROL],
head.list) {
if (ptr->head.is_deleted || ptr->type != type)
continue;
} else {
if (tomoyo_pathcmp(ptr->domainname, last_name))
if (ptr->domainname) {
if (!ptr->is_last_name) {
if (ptr->domainname != domainname)
continue;
} else {
/*
* Use direct strcmp() since this is
* unlikely used.
*/
if (strcmp(ptr->domainname->name,
last_name))
continue;
}
}
if (ptr->program &&
tomoyo_pathcmp(ptr->program, program))
continue;
if (type == TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE) {
/*
* Do not check for initialize_domain if
* no_initialize_domain matched.
*/
type = TOMOYO_TRANSITION_CONTROL_NO_KEEP;
goto next;
}
goto done;
}
if (ptr->program && tomoyo_pathcmp(ptr->program, program))
continue;
if (ptr->is_not) {
flag = false;
break;
}
flag = true;
}
return flag;
done:
return type;
}
static bool tomoyo_same_aggregator_entry(const struct tomoyo_acl_head *a,
@ -533,7 +424,6 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
char *tmp = kzalloc(TOMOYO_EXEC_TMPSIZE, GFP_NOFS);
struct tomoyo_domain_info *old_domain = tomoyo_domain();
struct tomoyo_domain_info *domain = NULL;
const char *old_domain_name = old_domain->domainname->name;
const char *original_name = bprm->filename;
u8 mode;
bool is_enforce;
@ -586,25 +476,33 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
if (retval < 0)
goto out;
if (tomoyo_domain_initializer(old_domain->domainname, &rn, &ln)) {
/* Calculate domain to transit to. */
switch (tomoyo_transition_type(old_domain->domainname, &rn)) {
case TOMOYO_TRANSITION_CONTROL_INITIALIZE:
/* Transit to the child of tomoyo_kernel_domain domain. */
snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1,
TOMOYO_ROOT_NAME " " "%s", rn.name);
} else if (old_domain == &tomoyo_kernel_domain &&
!tomoyo_policy_loaded) {
/*
* Needn't to transit from kernel domain before starting
* /sbin/init. But transit from kernel domain if executing
* initializers because they might start before /sbin/init.
*/
domain = old_domain;
} else if (tomoyo_domain_keeper(old_domain->domainname, &rn, &ln)) {
snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1, TOMOYO_ROOT_NAME " "
"%s", rn.name);
break;
case TOMOYO_TRANSITION_CONTROL_KEEP:
/* Keep current domain. */
domain = old_domain;
} else {
/* Normal domain transition. */
snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1,
"%s %s", old_domain_name, rn.name);
break;
default:
if (old_domain == &tomoyo_kernel_domain &&
!tomoyo_policy_loaded) {
/*
* Needn't to transit from kernel domain before
* starting /sbin/init. But transit from kernel domain
* if executing initializers because they might start
* before /sbin/init.
*/
domain = old_domain;
} else {
/* Normal domain transition. */
snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1, "%s %s",
old_domain->domainname->name, rn.name);
}
break;
}
if (domain || strlen(tmp) >= TOMOYO_EXEC_TMPSIZE - 10)
goto done;

19
security/tomoyo/gc.c
View File

@ -53,17 +53,9 @@ static void tomoyo_del_no_rewrite(struct list_head *element)
tomoyo_put_name(ptr->pattern);
}
static void tomoyo_del_domain_initializer(struct list_head *element)
static void tomoyo_del_transition_control(struct list_head *element)
{
struct tomoyo_domain_initializer_entry *ptr =
container_of(element, typeof(*ptr), head.list);
tomoyo_put_name(ptr->domainname);
tomoyo_put_name(ptr->program);
}
static void tomoyo_del_domain_keeper(struct list_head *element)
{
struct tomoyo_domain_keeper_entry *ptr =
struct tomoyo_transition_control *ptr =
container_of(element, typeof(*ptr), head.list);
tomoyo_put_name(ptr->domainname);
tomoyo_put_name(ptr->program);
@ -292,11 +284,8 @@ static void tomoyo_kfree_entry(void)
list_for_each_entry_safe(p, tmp, &tomoyo_gc_queue, list) {
struct list_head *element = p->element;
switch (p->type) {
case TOMOYO_ID_DOMAIN_INITIALIZER:
tomoyo_del_domain_initializer(element);
break;
case TOMOYO_ID_DOMAIN_KEEPER:
tomoyo_del_domain_keeper(element);
case TOMOYO_ID_TRANSITION_CONTROL:
tomoyo_del_transition_control(element);
break;
case TOMOYO_ID_AGGREGATOR:
tomoyo_del_aggregator(element);

8
security/tomoyo/memory.c
View File

@ -211,10 +211,10 @@ void __init tomoyo_mm_init(void)
panic("Can't register tomoyo_kernel_domain");
{
/* Load built-in policy. */
tomoyo_write_domain_initializer_policy("/sbin/hotplug",
false, false);
tomoyo_write_domain_initializer_policy("/sbin/modprobe",
false, false);
tomoyo_write_transition_control("/sbin/hotplug", false,
TOMOYO_TRANSITION_CONTROL_INITIALIZE);
tomoyo_write_transition_control("/sbin/modprobe", false,
TOMOYO_TRANSITION_CONTROL_INITIALIZE);
}
tomoyo_read_unlock(idx);
}

2
security/tomoyo/util.c
View File

@ -844,7 +844,7 @@ int tomoyo_init_request_info(struct tomoyo_request_info *r,
*
* Returns the last word of a line.
*/
static const char *tomoyo_last_word(const char *name)
const char *tomoyo_last_word(const char *name)
{
const char *cp = strrchr(name, ' ');
if (cp)