TOMOYO: Add garbage collector.
This patch adds garbage collector support to TOMOYO. Elements are protected by "struct srcu_struct tomoyo_ss". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Tetsuo Handa
James Morris
Родитель
ec8e6a4e06
Коммит
847b173ea3
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@ -1 +1 @@
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obj-y = common.o realpath.o tomoyo.o domain.o file.o
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obj-y = common.o realpath.o tomoyo.o domain.o file.o gc.o
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@ -1067,7 +1067,7 @@ static int tomoyo_read_profile(struct tomoyo_io_buffer *head)
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*
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* # cat /sys/kernel/security/tomoyo/manager
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*/
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static LIST_HEAD(tomoyo_policy_manager_list);
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LIST_HEAD(tomoyo_policy_manager_list);
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/**
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* tomoyo_update_manager_entry - Add a manager entry.
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@ -2109,6 +2109,7 @@ static int tomoyo_write_control(struct file *file, const char __user *buffer,
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static int tomoyo_close_control(struct file *file)
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{
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struct tomoyo_io_buffer *head = file->private_data;
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const bool is_write = !!head->write_buf;
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tomoyo_read_unlock(head->reader_idx);
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/* Release memory used for policy I/O. */
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@ -2119,6 +2120,8 @@ static int tomoyo_close_control(struct file *file)
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kfree(head);
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head = NULL;
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file->private_data = NULL;
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if (is_write)
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tomoyo_run_gc();
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return 0;
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}
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@ -638,6 +638,11 @@ int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain,
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struct file *filp);
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int tomoyo_find_next_domain(struct linux_binprm *bprm);
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/* Run garbage collector. */
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void tomoyo_run_gc(void);
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void tomoyo_memory_free(void *ptr);
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/********** External variable definitions. **********/
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/* Lock for GC. */
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@ -646,6 +651,16 @@ extern struct srcu_struct tomoyo_ss;
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/* The list for "struct tomoyo_domain_info". */
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extern struct list_head tomoyo_domain_list;
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extern struct list_head tomoyo_domain_initializer_list;
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extern struct list_head tomoyo_domain_keeper_list;
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extern struct list_head tomoyo_alias_list;
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extern struct list_head tomoyo_globally_readable_list;
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extern struct list_head tomoyo_pattern_list;
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extern struct list_head tomoyo_no_rewrite_list;
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extern struct list_head tomoyo_policy_manager_list;
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extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
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extern struct mutex tomoyo_name_list_lock;
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/* Lock for protecting policy. */
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extern struct mutex tomoyo_policy_lock;
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@ -110,7 +110,7 @@ const char *tomoyo_get_last_name(const struct tomoyo_domain_info *domain)
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* will cause "/usr/sbin/httpd" to belong to "<kernel> /usr/sbin/httpd" domain
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* unless executed from "<kernel> /etc/rc.d/init.d/httpd" domain.
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*/
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static LIST_HEAD(tomoyo_domain_initializer_list);
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LIST_HEAD(tomoyo_domain_initializer_list);
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/**
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* tomoyo_update_domain_initializer_entry - Update "struct tomoyo_domain_initializer_entry" list.
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@ -330,7 +330,7 @@ static bool tomoyo_is_domain_initializer(const struct tomoyo_path_info *
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* "<kernel> /usr/sbin/sshd /bin/bash /usr/bin/passwd" domain, unless
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* explicitly specified by "initialize_domain".
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*/
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static LIST_HEAD(tomoyo_domain_keeper_list);
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LIST_HEAD(tomoyo_domain_keeper_list);
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/**
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* tomoyo_update_domain_keeper_entry - Update "struct tomoyo_domain_keeper_entry" list.
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@ -533,7 +533,7 @@ static bool tomoyo_is_domain_keeper(const struct tomoyo_path_info *domainname,
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* /bin/busybox and domainname which the current process will belong to after
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* execve() succeeds is calculated using /bin/cat rather than /bin/busybox .
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*/
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static LIST_HEAD(tomoyo_alias_list);
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LIST_HEAD(tomoyo_alias_list);
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/**
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* tomoyo_update_alias_entry - Update "struct tomoyo_alias_entry" list.
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@ -148,7 +148,7 @@ static int tomoyo_update_single_path_acl(const u8 type, const char *filename,
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* given "allow_read /lib/libc-2.5.so" to the domain which current process
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* belongs to.
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*/
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static LIST_HEAD(tomoyo_globally_readable_list);
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LIST_HEAD(tomoyo_globally_readable_list);
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/**
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* tomoyo_update_globally_readable_entry - Update "struct tomoyo_globally_readable_file_entry" list.
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@ -295,7 +295,7 @@ bool tomoyo_read_globally_readable_policy(struct tomoyo_io_buffer *head)
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* which pretends as if /proc/self/ is not a symlink; so that we can forbid
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* current process from accessing other process's information.
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*/
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static LIST_HEAD(tomoyo_pattern_list);
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LIST_HEAD(tomoyo_pattern_list);
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/**
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* tomoyo_update_file_pattern_entry - Update "struct tomoyo_pattern_entry" list.
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@ -448,7 +448,7 @@ bool tomoyo_read_file_pattern(struct tomoyo_io_buffer *head)
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* " (deleted)" suffix if the file is already unlink()ed; so that we don't
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* need to worry whether the file is already unlink()ed or not.
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*/
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static LIST_HEAD(tomoyo_no_rewrite_list);
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LIST_HEAD(tomoyo_no_rewrite_list);
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/**
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* tomoyo_update_no_rewrite_entry - Update "struct tomoyo_no_rewrite_entry" list.
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@ -0,0 +1,370 @@
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/*
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* security/tomoyo/gc.c
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*
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* Implementation of the Domain-Based Mandatory Access Control.
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*
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* Copyright (C) 2005-2010 NTT DATA CORPORATION
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*
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*/
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#include "common.h"
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#include <linux/kthread.h>
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enum tomoyo_gc_id {
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TOMOYO_ID_DOMAIN_INITIALIZER,
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TOMOYO_ID_DOMAIN_KEEPER,
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TOMOYO_ID_ALIAS,
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TOMOYO_ID_GLOBALLY_READABLE,
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TOMOYO_ID_PATTERN,
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TOMOYO_ID_NO_REWRITE,
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TOMOYO_ID_MANAGER,
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TOMOYO_ID_NAME,
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TOMOYO_ID_ACL,
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TOMOYO_ID_DOMAIN
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};
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struct tomoyo_gc_entry {
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struct list_head list;
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int type;
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void *element;
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};
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static LIST_HEAD(tomoyo_gc_queue);
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static DEFINE_MUTEX(tomoyo_gc_mutex);
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/* Caller holds tomoyo_policy_lock mutex. */
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static bool tomoyo_add_to_gc(const int type, void *element)
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{
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struct tomoyo_gc_entry *entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
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if (!entry)
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return false;
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entry->type = type;
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entry->element = element;
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list_add(&entry->list, &tomoyo_gc_queue);
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return true;
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}
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static void tomoyo_del_allow_read
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(struct tomoyo_globally_readable_file_entry *ptr)
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{
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tomoyo_put_name(ptr->filename);
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}
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static void tomoyo_del_file_pattern(struct tomoyo_pattern_entry *ptr)
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{
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tomoyo_put_name(ptr->pattern);
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}
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static void tomoyo_del_no_rewrite(struct tomoyo_no_rewrite_entry *ptr)
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{
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tomoyo_put_name(ptr->pattern);
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}
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static void tomoyo_del_domain_initializer
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(struct tomoyo_domain_initializer_entry *ptr)
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{
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tomoyo_put_name(ptr->domainname);
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tomoyo_put_name(ptr->program);
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}
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static void tomoyo_del_domain_keeper(struct tomoyo_domain_keeper_entry *ptr)
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{
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tomoyo_put_name(ptr->domainname);
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tomoyo_put_name(ptr->program);
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}
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static void tomoyo_del_alias(struct tomoyo_alias_entry *ptr)
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{
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tomoyo_put_name(ptr->original_name);
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tomoyo_put_name(ptr->aliased_name);
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}
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static void tomoyo_del_manager(struct tomoyo_policy_manager_entry *ptr)
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{
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tomoyo_put_name(ptr->manager);
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}
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static void tomoyo_del_acl(struct tomoyo_acl_info *acl)
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{
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switch (acl->type) {
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case TOMOYO_TYPE_SINGLE_PATH_ACL:
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{
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struct tomoyo_single_path_acl_record *entry
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= container_of(acl, typeof(*entry), head);
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tomoyo_put_name(entry->filename);
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}
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break;
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case TOMOYO_TYPE_DOUBLE_PATH_ACL:
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{
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struct tomoyo_double_path_acl_record *entry
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= container_of(acl, typeof(*entry), head);
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tomoyo_put_name(entry->filename1);
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tomoyo_put_name(entry->filename2);
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}
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break;
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default:
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printk(KERN_WARNING "Unknown type\n");
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break;
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}
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}
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static bool tomoyo_del_domain(struct tomoyo_domain_info *domain)
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{
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struct tomoyo_acl_info *acl;
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struct tomoyo_acl_info *tmp;
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/*
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* Since we don't protect whole execve() operation using SRCU,
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* we need to recheck domain->users at this point.
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*
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* (1) Reader starts SRCU section upon execve().
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* (2) Reader traverses tomoyo_domain_list and finds this domain.
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* (3) Writer marks this domain as deleted.
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* (4) Garbage collector removes this domain from tomoyo_domain_list
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* because this domain is marked as deleted and used by nobody.
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* (5) Reader saves reference to this domain into
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* "struct linux_binprm"->cred->security .
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* (6) Reader finishes SRCU section, although execve() operation has
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* not finished yet.
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* (7) Garbage collector waits for SRCU synchronization.
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* (8) Garbage collector kfree() this domain because this domain is
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* used by nobody.
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* (9) Reader finishes execve() operation and restores this domain from
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* "struct linux_binprm"->cred->security.
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*
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* By updating domain->users at (5), we can solve this race problem
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* by rechecking domain->users at (8).
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*/
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if (atomic_read(&domain->users))
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return false;
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list_for_each_entry_safe(acl, tmp, &domain->acl_info_list, list) {
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tomoyo_del_acl(acl);
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tomoyo_memory_free(acl);
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}
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tomoyo_put_name(domain->domainname);
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return true;
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}
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static void tomoyo_del_name(const struct tomoyo_name_entry *ptr)
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{
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}
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static void tomoyo_collect_entry(void)
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{
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mutex_lock(&tomoyo_policy_lock);
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{
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struct tomoyo_globally_readable_file_entry *ptr;
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list_for_each_entry_rcu(ptr, &tomoyo_globally_readable_list,
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list) {
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if (!ptr->is_deleted)
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_GLOBALLY_READABLE, ptr))
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list_del_rcu(&ptr->list);
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else
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break;
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}
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}
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{
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struct tomoyo_pattern_entry *ptr;
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list_for_each_entry_rcu(ptr, &tomoyo_pattern_list, list) {
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if (!ptr->is_deleted)
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_PATTERN, ptr))
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list_del_rcu(&ptr->list);
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else
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break;
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}
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}
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{
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struct tomoyo_no_rewrite_entry *ptr;
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list_for_each_entry_rcu(ptr, &tomoyo_no_rewrite_list, list) {
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if (!ptr->is_deleted)
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_NO_REWRITE, ptr))
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list_del_rcu(&ptr->list);
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else
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break;
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}
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}
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{
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struct tomoyo_domain_initializer_entry *ptr;
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list_for_each_entry_rcu(ptr, &tomoyo_domain_initializer_list,
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list) {
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if (!ptr->is_deleted)
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_DOMAIN_INITIALIZER, ptr))
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list_del_rcu(&ptr->list);
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else
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break;
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}
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}
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{
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struct tomoyo_domain_keeper_entry *ptr;
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list_for_each_entry_rcu(ptr, &tomoyo_domain_keeper_list, list) {
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if (!ptr->is_deleted)
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_DOMAIN_KEEPER, ptr))
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list_del_rcu(&ptr->list);
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else
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break;
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}
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}
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{
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struct tomoyo_alias_entry *ptr;
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list_for_each_entry_rcu(ptr, &tomoyo_alias_list, list) {
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if (!ptr->is_deleted)
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_ALIAS, ptr))
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list_del_rcu(&ptr->list);
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else
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break;
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}
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}
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{
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struct tomoyo_policy_manager_entry *ptr;
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list_for_each_entry_rcu(ptr, &tomoyo_policy_manager_list,
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list) {
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if (!ptr->is_deleted)
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_MANAGER, ptr))
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list_del_rcu(&ptr->list);
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else
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break;
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}
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}
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{
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struct tomoyo_domain_info *domain;
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list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) {
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struct tomoyo_acl_info *acl;
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list_for_each_entry_rcu(acl, &domain->acl_info_list,
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list) {
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switch (acl->type) {
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case TOMOYO_TYPE_SINGLE_PATH_ACL:
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if (container_of(acl,
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struct tomoyo_single_path_acl_record,
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head)->perm ||
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container_of(acl,
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struct tomoyo_single_path_acl_record,
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head)->perm_high)
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continue;
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break;
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case TOMOYO_TYPE_DOUBLE_PATH_ACL:
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if (container_of(acl,
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struct tomoyo_double_path_acl_record,
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head)->perm)
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continue;
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break;
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default:
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continue;
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}
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if (tomoyo_add_to_gc(TOMOYO_ID_ACL, acl))
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list_del_rcu(&acl->list);
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else
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break;
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}
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if (!domain->is_deleted || atomic_read(&domain->users))
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continue;
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/*
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* Nobody is referring this domain. But somebody may
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* refer this domain after successful execve().
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* We recheck domain->users after SRCU synchronization.
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*/
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if (tomoyo_add_to_gc(TOMOYO_ID_DOMAIN, domain))
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list_del_rcu(&domain->list);
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else
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break;
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}
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}
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mutex_unlock(&tomoyo_policy_lock);
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mutex_lock(&tomoyo_name_list_lock);
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{
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int i;
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for (i = 0; i < TOMOYO_MAX_HASH; i++) {
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struct tomoyo_name_entry *ptr;
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list_for_each_entry_rcu(ptr, &tomoyo_name_list[i],
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list) {
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if (atomic_read(&ptr->users))
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continue;
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if (tomoyo_add_to_gc(TOMOYO_ID_NAME, ptr))
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list_del_rcu(&ptr->list);
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else {
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i = TOMOYO_MAX_HASH;
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break;
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}
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}
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}
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}
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mutex_unlock(&tomoyo_name_list_lock);
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}
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static void tomoyo_kfree_entry(void)
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{
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struct tomoyo_gc_entry *p;
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struct tomoyo_gc_entry *tmp;
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list_for_each_entry_safe(p, tmp, &tomoyo_gc_queue, list) {
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switch (p->type) {
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case TOMOYO_ID_DOMAIN_INITIALIZER:
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tomoyo_del_domain_initializer(p->element);
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break;
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case TOMOYO_ID_DOMAIN_KEEPER:
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tomoyo_del_domain_keeper(p->element);
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break;
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case TOMOYO_ID_ALIAS:
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tomoyo_del_alias(p->element);
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break;
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case TOMOYO_ID_GLOBALLY_READABLE:
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tomoyo_del_allow_read(p->element);
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break;
|
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case TOMOYO_ID_PATTERN:
|
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tomoyo_del_file_pattern(p->element);
|
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break;
|
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case TOMOYO_ID_NO_REWRITE:
|
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tomoyo_del_no_rewrite(p->element);
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break;
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case TOMOYO_ID_MANAGER:
|
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tomoyo_del_manager(p->element);
|
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break;
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case TOMOYO_ID_NAME:
|
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tomoyo_del_name(p->element);
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break;
|
||||
case TOMOYO_ID_ACL:
|
||||
tomoyo_del_acl(p->element);
|
||||
break;
|
||||
case TOMOYO_ID_DOMAIN:
|
||||
if (!tomoyo_del_domain(p->element))
|
||||
continue;
|
||||
break;
|
||||
default:
|
||||
printk(KERN_WARNING "Unknown type\n");
|
||||
break;
|
||||
}
|
||||
tomoyo_memory_free(p->element);
|
||||
list_del(&p->list);
|
||||
kfree(p);
|
||||
}
|
||||
}
|
||||
|
||||
static int tomoyo_gc_thread(void *unused)
|
||||
{
|
||||
daemonize("GC for TOMOYO");
|
||||
if (mutex_trylock(&tomoyo_gc_mutex)) {
|
||||
int i;
|
||||
for (i = 0; i < 10; i++) {
|
||||
tomoyo_collect_entry();
|
||||
if (list_empty(&tomoyo_gc_queue))
|
||||
break;
|
||||
synchronize_srcu(&tomoyo_ss);
|
||||
tomoyo_kfree_entry();
|
||||
}
|
||||
mutex_unlock(&tomoyo_gc_mutex);
|
||||
}
|
||||
do_exit(0);
|
||||
}
|
||||
|
||||
void tomoyo_run_gc(void)
|
||||
{
|
||||
struct task_struct *task = kthread_create(tomoyo_gc_thread, NULL,
|
||||
"GC for TOMOYO");
|
||||
if (!IS_ERR(task))
|
||||
wake_up_process(task);
|
||||
}
|
||||
|
|
@ -205,9 +205,9 @@ char *tomoyo_realpath_nofollow(const char *pathname)
|
|||
}
|
||||
|
||||
/* Memory allocated for non-string data. */
|
||||
static unsigned int tomoyo_allocated_memory_for_elements;
|
||||
/* Quota for holding non-string data. */
|
||||
static unsigned int tomoyo_quota_for_elements;
|
||||
static atomic_t tomoyo_policy_memory_size;
|
||||
/* Quota for holding policy. */
|
||||
static unsigned int tomoyo_quota_for_policy;
|
||||
|
||||
/**
|
||||
* tomoyo_memory_ok - Check memory quota.
|
||||
|
|
@ -222,26 +222,30 @@ static unsigned int tomoyo_quota_for_elements;
|
|||
bool tomoyo_memory_ok(void *ptr)
|
||||
{
|
||||
int allocated_len = ptr ? ksize(ptr) : 0;
|
||||
bool result = false;
|
||||
if (!ptr || (tomoyo_quota_for_elements &&
|
||||
tomoyo_allocated_memory_for_elements
|
||||
+ allocated_len > tomoyo_quota_for_elements)) {
|
||||
printk(KERN_WARNING "ERROR: Out of memory "
|
||||
"for tomoyo_alloc_element().\n");
|
||||
if (!tomoyo_policy_loaded)
|
||||
panic("MAC Initialization failed.\n");
|
||||
} else {
|
||||
result = true;
|
||||
tomoyo_allocated_memory_for_elements += allocated_len;
|
||||
atomic_add(allocated_len, &tomoyo_policy_memory_size);
|
||||
if (ptr && (!tomoyo_quota_for_policy ||
|
||||
atomic_read(&tomoyo_policy_memory_size)
|
||||
<= tomoyo_quota_for_policy)) {
|
||||
memset(ptr, 0, allocated_len);
|
||||
return true;
|
||||
}
|
||||
return result;
|
||||
printk(KERN_WARNING "ERROR: Out of memory "
|
||||
"for tomoyo_alloc_element().\n");
|
||||
if (!tomoyo_policy_loaded)
|
||||
panic("MAC Initialization failed.\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Memory allocated for string data in bytes. */
|
||||
static unsigned int tomoyo_allocated_memory_for_savename;
|
||||
/* Quota for holding string data in bytes. */
|
||||
static unsigned int tomoyo_quota_for_savename;
|
||||
/**
|
||||
* tomoyo_memory_free - Free memory for elements.
|
||||
*
|
||||
* @ptr: Pointer to allocated memory.
|
||||
*/
|
||||
void tomoyo_memory_free(void *ptr)
|
||||
{
|
||||
atomic_sub(ksize(ptr), &tomoyo_policy_memory_size);
|
||||
kfree(ptr);
|
||||
}
|
||||
|
||||
/*
|
||||
* tomoyo_name_list is used for holding string data used by TOMOYO.
|
||||
|
|
@ -249,7 +253,9 @@ static unsigned int tomoyo_quota_for_savename;
|
|||
* "/lib/libc-2.5.so"), TOMOYO shares string data in the form of
|
||||
* "const struct tomoyo_path_info *".
|
||||
*/
|
||||
static struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
|
||||
struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
|
||||
/* Lock for protecting tomoyo_name_list . */
|
||||
DEFINE_MUTEX(tomoyo_name_list_lock);
|
||||
|
||||
/**
|
||||
* tomoyo_get_name - Allocate permanent memory for string data.
|
||||
|
|
@ -260,7 +266,6 @@ static struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
|
|||
*/
|
||||
const struct tomoyo_path_info *tomoyo_get_name(const char *name)
|
||||
{
|
||||
static DEFINE_MUTEX(lock);
|
||||
struct tomoyo_name_entry *ptr;
|
||||
unsigned int hash;
|
||||
int len;
|
||||
|
|
@ -272,7 +277,7 @@ const struct tomoyo_path_info *tomoyo_get_name(const char *name)
|
|||
len = strlen(name) + 1;
|
||||
hash = full_name_hash((const unsigned char *) name, len - 1);
|
||||
head = &tomoyo_name_list[hash_long(hash, TOMOYO_HASH_BITS)];
|
||||
mutex_lock(&lock);
|
||||
mutex_lock(&tomoyo_name_list_lock);
|
||||
list_for_each_entry(ptr, head, list) {
|
||||
if (hash != ptr->entry.hash || strcmp(name, ptr->entry.name))
|
||||
continue;
|
||||
|
|
@ -281,9 +286,9 @@ const struct tomoyo_path_info *tomoyo_get_name(const char *name)
|
|||
}
|
||||
ptr = kzalloc(sizeof(*ptr) + len, GFP_KERNEL);
|
||||
allocated_len = ptr ? ksize(ptr) : 0;
|
||||
if (!ptr || (tomoyo_quota_for_savename &&
|
||||
tomoyo_allocated_memory_for_savename + allocated_len
|
||||
> tomoyo_quota_for_savename)) {
|
||||
if (!ptr || (tomoyo_quota_for_policy &&
|
||||
atomic_read(&tomoyo_policy_memory_size) + allocated_len
|
||||
> tomoyo_quota_for_policy)) {
|
||||
kfree(ptr);
|
||||
printk(KERN_WARNING "ERROR: Out of memory "
|
||||
"for tomoyo_get_name().\n");
|
||||
|
|
@ -292,14 +297,14 @@ const struct tomoyo_path_info *tomoyo_get_name(const char *name)
|
|||
ptr = NULL;
|
||||
goto out;
|
||||
}
|
||||
tomoyo_allocated_memory_for_savename += allocated_len;
|
||||
atomic_add(allocated_len, &tomoyo_policy_memory_size);
|
||||
ptr->entry.name = ((char *) ptr) + sizeof(*ptr);
|
||||
memmove((char *) ptr->entry.name, name, len);
|
||||
atomic_set(&ptr->users, 1);
|
||||
tomoyo_fill_path_info(&ptr->entry);
|
||||
list_add_tail(&ptr->list, head);
|
||||
out:
|
||||
mutex_unlock(&lock);
|
||||
mutex_unlock(&tomoyo_name_list_lock);
|
||||
return ptr ? &ptr->entry : NULL;
|
||||
}
|
||||
|
||||
|
|
@ -334,28 +339,19 @@ void __init tomoyo_realpath_init(void)
|
|||
int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head)
|
||||
{
|
||||
if (!head->read_eof) {
|
||||
const unsigned int shared
|
||||
= tomoyo_allocated_memory_for_savename;
|
||||
const unsigned int private
|
||||
= tomoyo_allocated_memory_for_elements;
|
||||
const unsigned int policy
|
||||
= atomic_read(&tomoyo_policy_memory_size);
|
||||
char buffer[64];
|
||||
|
||||
memset(buffer, 0, sizeof(buffer));
|
||||
if (tomoyo_quota_for_savename)
|
||||
if (tomoyo_quota_for_policy)
|
||||
snprintf(buffer, sizeof(buffer) - 1,
|
||||
" (Quota: %10u)",
|
||||
tomoyo_quota_for_savename);
|
||||
tomoyo_quota_for_policy);
|
||||
else
|
||||
buffer[0] = '\0';
|
||||
tomoyo_io_printf(head, "Shared: %10u%s\n", shared, buffer);
|
||||
if (tomoyo_quota_for_elements)
|
||||
snprintf(buffer, sizeof(buffer) - 1,
|
||||
" (Quota: %10u)",
|
||||
tomoyo_quota_for_elements);
|
||||
else
|
||||
buffer[0] = '\0';
|
||||
tomoyo_io_printf(head, "Private: %10u%s\n", private, buffer);
|
||||
tomoyo_io_printf(head, "Total: %10u\n", shared + private);
|
||||
tomoyo_io_printf(head, "Policy: %10u%s\n", policy, buffer);
|
||||
tomoyo_io_printf(head, "Total: %10u\n", policy);
|
||||
head->read_eof = true;
|
||||
}
|
||||
return 0;
|
||||
|
|
@ -373,9 +369,7 @@ int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head)
|
|||
char *data = head->write_buf;
|
||||
unsigned int size;
|
||||
|
||||
if (sscanf(data, "Shared: %u", &size) == 1)
|
||||
tomoyo_quota_for_savename = size;
|
||||
else if (sscanf(data, "Private: %u", &size) == 1)
|
||||
tomoyo_quota_for_elements = size;
|
||||
if (sscanf(data, "Policy: %u", &size) == 1)
|
||||
tomoyo_quota_for_policy = size;
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче