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alistair23-linux
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Merge branch 'for-linus' of git://git.selinuxproject.org/~jmorris/linux-security 

* 'for-linus' of git://git.selinuxproject.org/~jmorris/linux-security:
  TOMOYO: Fix interactive judgment functionality.
hifive-unleashed-5.1
Linus Torvalds 2011-11-02 17:01:01 -07:00
parent 6681ba7ec4 59df3166ef
commit 2380078cdb
1 changed files with 30 additions and 0 deletions
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30
security/tomoyo/common.c
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@ -966,6 +966,9 @@ static bool tomoyo_manager(void)
return found;
}
static struct tomoyo_domain_info *tomoyo_find_domain_by_qid
(unsigned int serial);
/**
* tomoyo_select_domain - Parse select command.
*
@ -999,6 +1002,8 @@ static bool tomoyo_select_domain(struct tomoyo_io_buffer *head,
} else if (!strncmp(data, "domain=", 7)) {
if (tomoyo_domain_def(data + 7))
domain = tomoyo_find_domain(data + 7);
} else if (sscanf(data, "Q=%u", &pid) == 1) {
domain = tomoyo_find_domain_by_qid(pid);
} else
return false;
head->w.domain = domain;
@ -1894,6 +1899,7 @@ static DECLARE_WAIT_QUEUE_HEAD(tomoyo_answer_wait);
/* Structure for query. */
struct tomoyo_query {
struct list_head list;
struct tomoyo_domain_info *domain;
char *query;
size_t query_len;
unsigned int serial;
@ -2044,6 +2050,7 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
goto out;
}
len = tomoyo_round2(entry.query_len);
entry.domain = r->domain;
spin_lock(&tomoyo_query_list_lock);
if (tomoyo_memory_quota[TOMOYO_MEMORY_QUERY] &&
tomoyo_memory_used[TOMOYO_MEMORY_QUERY] + len
@ -2090,6 +2097,29 @@ out:
return error;
}
/**
* tomoyo_find_domain_by_qid - Get domain by query id.
*
* @serial: Query ID assigned by tomoyo_supervisor().
*
* Returns pointer to "struct tomoyo_domain_info" if found, NULL otherwise.
*/
static struct tomoyo_domain_info *tomoyo_find_domain_by_qid
(unsigned int serial)
{
struct tomoyo_query *ptr;
struct tomoyo_domain_info *domain = NULL;
spin_lock(&tomoyo_query_list_lock);
list_for_each_entry(ptr, &tomoyo_query_list, list) {
if (ptr->serial != serial || ptr->answer)
continue;
domain = ptr->domain;
break;
}
spin_unlock(&tomoyo_query_list_lock);
return domain;
}
/**
* tomoyo_poll_query - poll() for /sys/kernel/security/tomoyo/query.
*