};
/* Keyword array for operations with one pathname and three numbers. */
-static const char *tomoyo_path_number3_keyword
-[TOMOYO_MAX_PATH_NUMBER3_OPERATION] = {
+static const char *tomoyo_mkdev_keyword
+[TOMOYO_MAX_MKDEV_OPERATION] = {
[TOMOYO_TYPE_MKBLOCK] = "mkblock",
[TOMOYO_TYPE_MKCHAR] = "mkchar",
};
[TOMOYO_TYPE_CHGRP] = "chgrp",
};
+static const u8 tomoyo_p2mac[TOMOYO_MAX_PATH_OPERATION] = {
+ [TOMOYO_TYPE_READ_WRITE] = TOMOYO_MAC_FILE_OPEN,
+ [TOMOYO_TYPE_EXECUTE] = TOMOYO_MAC_FILE_EXECUTE,
+ [TOMOYO_TYPE_READ] = TOMOYO_MAC_FILE_OPEN,
+ [TOMOYO_TYPE_WRITE] = TOMOYO_MAC_FILE_OPEN,
+ [TOMOYO_TYPE_UNLINK] = TOMOYO_MAC_FILE_UNLINK,
+ [TOMOYO_TYPE_RMDIR] = TOMOYO_MAC_FILE_RMDIR,
+ [TOMOYO_TYPE_TRUNCATE] = TOMOYO_MAC_FILE_TRUNCATE,
+ [TOMOYO_TYPE_SYMLINK] = TOMOYO_MAC_FILE_SYMLINK,
+ [TOMOYO_TYPE_REWRITE] = TOMOYO_MAC_FILE_REWRITE,
+ [TOMOYO_TYPE_CHROOT] = TOMOYO_MAC_FILE_CHROOT,
+ [TOMOYO_TYPE_UMOUNT] = TOMOYO_MAC_FILE_UMOUNT,
+};
+
+static const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION] = {
+ [TOMOYO_TYPE_MKBLOCK] = TOMOYO_MAC_FILE_MKBLOCK,
+ [TOMOYO_TYPE_MKCHAR] = TOMOYO_MAC_FILE_MKCHAR,
+};
+
+static const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION] = {
+ [TOMOYO_TYPE_LINK] = TOMOYO_MAC_FILE_LINK,
+ [TOMOYO_TYPE_RENAME] = TOMOYO_MAC_FILE_RENAME,
+ [TOMOYO_TYPE_PIVOT_ROOT] = TOMOYO_MAC_FILE_PIVOT_ROOT,
+};
+
+static const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION] = {
+ [TOMOYO_TYPE_CREATE] = TOMOYO_MAC_FILE_CREATE,
+ [TOMOYO_TYPE_MKDIR] = TOMOYO_MAC_FILE_MKDIR,
+ [TOMOYO_TYPE_MKFIFO] = TOMOYO_MAC_FILE_MKFIFO,
+ [TOMOYO_TYPE_MKSOCK] = TOMOYO_MAC_FILE_MKSOCK,
+ [TOMOYO_TYPE_IOCTL] = TOMOYO_MAC_FILE_IOCTL,
+ [TOMOYO_TYPE_CHMOD] = TOMOYO_MAC_FILE_CHMOD,
+ [TOMOYO_TYPE_CHOWN] = TOMOYO_MAC_FILE_CHOWN,
+ [TOMOYO_TYPE_CHGRP] = TOMOYO_MAC_FILE_CHGRP,
+};
+
void tomoyo_put_name_union(struct tomoyo_name_union *ptr)
{
if (!ptr)
const struct tomoyo_name_union *ptr)
{
if (ptr->is_group)
- return tomoyo_path_matches_group(name, ptr->group, 1);
+ return tomoyo_path_matches_group(name, ptr->group);
return tomoyo_path_matches_pattern(name, ptr->filename);
}
-static bool tomoyo_compare_name_union_pattern(const struct tomoyo_path_info
- *name,
- const struct tomoyo_name_union
- *ptr, const bool may_use_pattern)
-{
- if (ptr->is_group)
- return tomoyo_path_matches_group(name, ptr->group,
- may_use_pattern);
- if (may_use_pattern || !ptr->filename->is_patterned)
- return tomoyo_path_matches_pattern(name, ptr->filename);
- return false;
-}
-
void tomoyo_put_number_union(struct tomoyo_number_union *ptr)
{
if (ptr && ptr->is_group)
}
/**
- * tomoyo_path_number32keyword - Get the name of path/number/number/number operations.
+ * tomoyo_mkdev2keyword - Get the name of path/number/number/number operations.
*
* @operation: Type of operation.
*
* Returns the name of path/number/number/number operation.
*/
-const char *tomoyo_path_number32keyword(const u8 operation)
+const char *tomoyo_mkdev2keyword(const u8 operation)
{
- return (operation < TOMOYO_MAX_PATH_NUMBER3_OPERATION)
- ? tomoyo_path_number3_keyword[operation] : NULL;
+ return (operation < TOMOYO_MAX_MKDEV_OPERATION)
+ ? tomoyo_mkdev_keyword[operation] : NULL;
}
/**
return false;
}
+/**
+ * tomoyo_audit_path_log - Audit path request log.
+ *
+ * @r: Pointer to "struct tomoyo_request_info".
+ *
+ * Returns 0 on success, negative value otherwise.
+ */
+static int tomoyo_audit_path_log(struct tomoyo_request_info *r)
+{
+ const char *operation = tomoyo_path_keyword[r->param.path.operation];
+ const struct tomoyo_path_info *filename = r->param.path.filename;
+ if (r->granted)
+ return 0;
+ tomoyo_warn_log(r, "%s %s", operation, filename->name);
+ return tomoyo_supervisor(r, "allow_%s %s\n", operation,
+ tomoyo_file_pattern(filename));
+}
+
+/**
+ * tomoyo_audit_path2_log - Audit path/path request log.
+ *
+ * @r: Pointer to "struct tomoyo_request_info".
+ *
+ * Returns 0 on success, negative value otherwise.
+ */
+static int tomoyo_audit_path2_log(struct tomoyo_request_info *r)
+{
+ const char *operation = tomoyo_path2_keyword[r->param.path2.operation];
+ const struct tomoyo_path_info *filename1 = r->param.path2.filename1;
+ const struct tomoyo_path_info *filename2 = r->param.path2.filename2;
+ if (r->granted)
+ return 0;
+ tomoyo_warn_log(r, "%s %s %s", operation, filename1->name,
+ filename2->name);
+ return tomoyo_supervisor(r, "allow_%s %s %s\n", operation,
+ tomoyo_file_pattern(filename1),
+ tomoyo_file_pattern(filename2));
+}
+
+/**
+ * tomoyo_audit_mkdev_log - Audit path/number/number/number request log.
+ *
+ * @r: Pointer to "struct tomoyo_request_info".
+ *
+ * Returns 0 on success, negative value otherwise.
+ */
+static int tomoyo_audit_mkdev_log(struct tomoyo_request_info *r)
+{
+ const char *operation = tomoyo_mkdev2keyword(r->param.mkdev.
+ operation);
+ const struct tomoyo_path_info *filename = r->param.mkdev.filename;
+ const unsigned int major = r->param.mkdev.major;
+ const unsigned int minor = r->param.mkdev.minor;
+ const unsigned int mode = r->param.mkdev.mode;
+ if (r->granted)
+ return 0;
+ tomoyo_warn_log(r, "%s %s 0%o %u %u", operation, filename->name, mode,
+ major, minor);
+ return tomoyo_supervisor(r, "allow_%s %s 0%o %u %u\n", operation,
+ tomoyo_file_pattern(filename), mode, major,
+ minor);
+}
+
+/**
+ * tomoyo_audit_path_number_log - Audit path/number request log.
+ *
+ * @r: Pointer to "struct tomoyo_request_info".
+ * @error: Error code.
+ *
+ * Returns 0 on success, negative value otherwise.
+ */
+static int tomoyo_audit_path_number_log(struct tomoyo_request_info *r)
+{
+ const u8 type = r->param.path_number.operation;
+ u8 radix;
+ const struct tomoyo_path_info *filename = r->param.path_number.filename;
+ const char *operation = tomoyo_path_number_keyword[type];
+ char buffer[64];
+ if (r->granted)
+ return 0;
+ switch (type) {
+ case TOMOYO_TYPE_CREATE:
+ case TOMOYO_TYPE_MKDIR:
+ case TOMOYO_TYPE_MKFIFO:
+ case TOMOYO_TYPE_MKSOCK:
+ case TOMOYO_TYPE_CHMOD:
+ radix = TOMOYO_VALUE_TYPE_OCTAL;
+ break;
+ case TOMOYO_TYPE_IOCTL:
+ radix = TOMOYO_VALUE_TYPE_HEXADECIMAL;
+ break;
+ default:
+ radix = TOMOYO_VALUE_TYPE_DECIMAL;
+ break;
+ }
+ tomoyo_print_ulong(buffer, sizeof(buffer), r->param.path_number.number,
+ radix);
+ tomoyo_warn_log(r, "%s %s %s", operation, filename->name, buffer);
+ return tomoyo_supervisor(r, "allow_%s %s %s\n", operation,
+ tomoyo_file_pattern(filename), buffer);
+}
+
static int tomoyo_update_path2_acl(const u8 type, const char *filename1,
const char *filename2,
struct tomoyo_domain_info *const domain,
*/
LIST_HEAD(tomoyo_globally_readable_list);
+static bool tomoyo_same_globally_readable(const struct tomoyo_acl_head *a,
+ const struct tomoyo_acl_head *b)
+{
+ return container_of(a, struct tomoyo_globally_readable_file_entry,
+ head)->filename ==
+ container_of(b, struct tomoyo_globally_readable_file_entry,
+ head)->filename;
+}
+
/**
* tomoyo_update_globally_readable_entry - Update "struct tomoyo_globally_readable_file_entry" list.
*
static int tomoyo_update_globally_readable_entry(const char *filename,
const bool is_delete)
{
- struct tomoyo_globally_readable_file_entry *ptr;
struct tomoyo_globally_readable_file_entry e = { };
- int error = is_delete ? -ENOENT : -ENOMEM;
+ int error;
- if (!tomoyo_is_correct_path(filename, 1, 0, -1))
+ if (!tomoyo_correct_word(filename))
return -EINVAL;
e.filename = tomoyo_get_name(filename);
if (!e.filename)
return -ENOMEM;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &tomoyo_globally_readable_list, list) {
- if (ptr->filename != e.filename)
- continue;
- ptr->is_deleted = is_delete;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_globally_readable_file_entry *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->list,
- &tomoyo_globally_readable_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
- out:
+ error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
+ &tomoyo_globally_readable_list,
+ tomoyo_same_globally_readable);
tomoyo_put_name(e.filename);
return error;
}
/**
- * tomoyo_is_globally_readable_file - Check if the file is unconditionnaly permitted to be open()ed for reading.
+ * tomoyo_globally_readable_file - Check if the file is unconditionnaly permitted to be open()ed for reading.
*
* @filename: The filename to check.
*
*
* Caller holds tomoyo_read_lock().
*/
-static bool tomoyo_is_globally_readable_file(const struct tomoyo_path_info *
+static bool tomoyo_globally_readable_file(const struct tomoyo_path_info *
filename)
{
struct tomoyo_globally_readable_file_entry *ptr;
bool found = false;
- list_for_each_entry_rcu(ptr, &tomoyo_globally_readable_list, list) {
- if (!ptr->is_deleted &&
+ list_for_each_entry_rcu(ptr, &tomoyo_globally_readable_list,
+ head.list) {
+ if (!ptr->head.is_deleted &&
tomoyo_path_matches_pattern(filename, ptr->filename)) {
found = true;
break;
struct tomoyo_globally_readable_file_entry *ptr;
ptr = list_entry(pos,
struct tomoyo_globally_readable_file_entry,
- list);
- if (ptr->is_deleted)
+ head.list);
+ if (ptr->head.is_deleted)
continue;
done = tomoyo_io_printf(head, TOMOYO_KEYWORD_ALLOW_READ "%s\n",
ptr->filename->name);
*/
LIST_HEAD(tomoyo_pattern_list);
+static bool tomoyo_same_pattern(const struct tomoyo_acl_head *a,
+ const struct tomoyo_acl_head *b)
+{
+ return container_of(a, struct tomoyo_pattern_entry, head)->pattern ==
+ container_of(b, struct tomoyo_pattern_entry, head)->pattern;
+}
+
/**
* tomoyo_update_file_pattern_entry - Update "struct tomoyo_pattern_entry" list.
*
static int tomoyo_update_file_pattern_entry(const char *pattern,
const bool is_delete)
{
- struct tomoyo_pattern_entry *ptr;
- struct tomoyo_pattern_entry e = { .pattern = tomoyo_get_name(pattern) };
- int error = is_delete ? -ENOENT : -ENOMEM;
+ struct tomoyo_pattern_entry e = { };
+ int error;
+ if (!tomoyo_correct_word(pattern))
+ return -EINVAL;
+ e.pattern = tomoyo_get_name(pattern);
if (!e.pattern)
- return error;
- if (!e.pattern->is_patterned)
- goto out;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &tomoyo_pattern_list, list) {
- if (e.pattern != ptr->pattern)
- continue;
- ptr->is_deleted = is_delete;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_pattern_entry *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->list, &tomoyo_pattern_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
- out:
+ return -ENOMEM;
+ error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
+ &tomoyo_pattern_list,
+ tomoyo_same_pattern);
tomoyo_put_name(e.pattern);
return error;
}
struct tomoyo_pattern_entry *ptr;
const struct tomoyo_path_info *pattern = NULL;
- list_for_each_entry_rcu(ptr, &tomoyo_pattern_list, list) {
- if (ptr->is_deleted)
+ list_for_each_entry_rcu(ptr, &tomoyo_pattern_list, head.list) {
+ if (ptr->head.is_deleted)
continue;
if (!tomoyo_path_matches_pattern(filename, ptr->pattern))
continue;
list_for_each_cookie(pos, head->read_var2, &tomoyo_pattern_list) {
struct tomoyo_pattern_entry *ptr;
- ptr = list_entry(pos, struct tomoyo_pattern_entry, list);
- if (ptr->is_deleted)
+ ptr = list_entry(pos, struct tomoyo_pattern_entry, head.list);
+ if (ptr->head.is_deleted)
continue;
done = tomoyo_io_printf(head, TOMOYO_KEYWORD_FILE_PATTERN
"%s\n", ptr->pattern->name);
*/
LIST_HEAD(tomoyo_no_rewrite_list);
+static bool tomoyo_same_no_rewrite(const struct tomoyo_acl_head *a,
+ const struct tomoyo_acl_head *b)
+{
+ return container_of(a, struct tomoyo_no_rewrite_entry, head)->pattern
+ == container_of(b, struct tomoyo_no_rewrite_entry, head)
+ ->pattern;
+}
+
/**
* tomoyo_update_no_rewrite_entry - Update "struct tomoyo_no_rewrite_entry" list.
*
static int tomoyo_update_no_rewrite_entry(const char *pattern,
const bool is_delete)
{
- struct tomoyo_no_rewrite_entry *ptr;
struct tomoyo_no_rewrite_entry e = { };
- int error = is_delete ? -ENOENT : -ENOMEM;
+ int error;
- if (!tomoyo_is_correct_path(pattern, 0, 0, 0))
+ if (!tomoyo_correct_word(pattern))
return -EINVAL;
e.pattern = tomoyo_get_name(pattern);
if (!e.pattern)
- return error;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &tomoyo_no_rewrite_list, list) {
- if (ptr->pattern != e.pattern)
- continue;
- ptr->is_deleted = is_delete;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_no_rewrite_entry *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->list,
- &tomoyo_no_rewrite_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
- out:
+ return -ENOMEM;
+ error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
+ &tomoyo_no_rewrite_list,
+ tomoyo_same_no_rewrite);
tomoyo_put_name(e.pattern);
return error;
}
/**
- * tomoyo_is_no_rewrite_file - Check if the given pathname is not permitted to be rewrited.
+ * tomoyo_no_rewrite_file - Check if the given pathname is not permitted to be rewrited.
*
* @filename: Filename to check.
*
*
* Caller holds tomoyo_read_lock().
*/
-static bool tomoyo_is_no_rewrite_file(const struct tomoyo_path_info *filename)
+static bool tomoyo_no_rewrite_file(const struct tomoyo_path_info *filename)
{
struct tomoyo_no_rewrite_entry *ptr;
bool found = false;
- list_for_each_entry_rcu(ptr, &tomoyo_no_rewrite_list, list) {
- if (ptr->is_deleted)
+ list_for_each_entry_rcu(ptr, &tomoyo_no_rewrite_list, head.list) {
+ if (ptr->head.is_deleted)
continue;
if (!tomoyo_path_matches_pattern(filename, ptr->pattern))
continue;
list_for_each_cookie(pos, head->read_var2, &tomoyo_no_rewrite_list) {
struct tomoyo_no_rewrite_entry *ptr;
- ptr = list_entry(pos, struct tomoyo_no_rewrite_entry, list);
- if (ptr->is_deleted)
+ ptr = list_entry(pos, struct tomoyo_no_rewrite_entry,
+ head.list);
+ if (ptr->head.is_deleted)
continue;
done = tomoyo_io_printf(head, TOMOYO_KEYWORD_DENY_REWRITE
"%s\n", ptr->pattern->name);
return done;
}
-/**
- * tomoyo_update_file_acl - Update file's read/write/execute ACL.
- *
- * @perm: Permission (between 1 to 7).
- * @filename: Filename.
- * @domain: Pointer to "struct tomoyo_domain_info".
- * @is_delete: True if it is a delete request.
- *
- * Returns 0 on success, negative value otherwise.
- *
- * This is legacy support interface for older policy syntax.
- * Current policy syntax uses "allow_read/write" instead of "6",
- * "allow_read" instead of "4", "allow_write" instead of "2",
- * "allow_execute" instead of "1".
- *
- * Caller holds tomoyo_read_lock().
- */
-static int tomoyo_update_file_acl(u8 perm, const char *filename,
- struct tomoyo_domain_info * const domain,
- const bool is_delete)
+static bool tomoyo_check_path_acl(const struct tomoyo_request_info *r,
+ const struct tomoyo_acl_info *ptr)
{
- if (perm > 7 || !perm) {
- printk(KERN_DEBUG "%s: Invalid permission '%d %s'\n",
- __func__, perm, filename);
- return -EINVAL;
- }
- if (filename[0] != '@' && tomoyo_strendswith(filename, "/"))
- /*
- * Only 'allow_mkdir' and 'allow_rmdir' are valid for
- * directory permissions.
- */
- return 0;
- if (perm & 4)
- tomoyo_update_path_acl(TOMOYO_TYPE_READ, filename, domain,
- is_delete);
- if (perm & 2)
- tomoyo_update_path_acl(TOMOYO_TYPE_WRITE, filename, domain,
- is_delete);
- if (perm & 1)
- tomoyo_update_path_acl(TOMOYO_TYPE_EXECUTE, filename, domain,
- is_delete);
- return 0;
+ const struct tomoyo_path_acl *acl = container_of(ptr, typeof(*acl),
+ head);
+ return (acl->perm & (1 << r->param.path.operation)) &&
+ tomoyo_compare_name_union(r->param.path.filename, &acl->name);
}
-/**
- * tomoyo_path_acl - Check permission for single path operation.
- *
- * @r: Pointer to "struct tomoyo_request_info".
- * @filename: Filename to check.
- * @perm: Permission.
- * @may_use_pattern: True if patterned ACL is permitted.
- *
- * Returns 0 on success, -EPERM otherwise.
- *
- * Caller holds tomoyo_read_lock().
- */
-static int tomoyo_path_acl(const struct tomoyo_request_info *r,
- const struct tomoyo_path_info *filename,
- const u32 perm, const bool may_use_pattern)
+static bool tomoyo_check_path_number_acl(const struct tomoyo_request_info *r,
+ const struct tomoyo_acl_info *ptr)
{
- struct tomoyo_domain_info *domain = r->domain;
- struct tomoyo_acl_info *ptr;
- int error = -EPERM;
+ const struct tomoyo_path_number_acl *acl =
+ container_of(ptr, typeof(*acl), head);
+ return (acl->perm & (1 << r->param.path_number.operation)) &&
+ tomoyo_compare_number_union(r->param.path_number.number,
+ &acl->number) &&
+ tomoyo_compare_name_union(r->param.path_number.filename,
+ &acl->name);
+}
- list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
- struct tomoyo_path_acl *acl;
- if (ptr->type != TOMOYO_TYPE_PATH_ACL)
- continue;
- acl = container_of(ptr, struct tomoyo_path_acl, head);
- if (!(acl->perm & perm) ||
- !tomoyo_compare_name_union_pattern(filename, &acl->name,
- may_use_pattern))
- continue;
- error = 0;
- break;
- }
- return error;
+static bool tomoyo_check_path2_acl(const struct tomoyo_request_info *r,
+ const struct tomoyo_acl_info *ptr)
+{
+ const struct tomoyo_path2_acl *acl =
+ container_of(ptr, typeof(*acl), head);
+ return (acl->perm & (1 << r->param.path2.operation)) &&
+ tomoyo_compare_name_union(r->param.path2.filename1, &acl->name1)
+ && tomoyo_compare_name_union(r->param.path2.filename2,
+ &acl->name2);
}
-/**
- * tomoyo_file_perm - Check permission for opening files.
- *
- * @r: Pointer to "struct tomoyo_request_info".
- * @filename: Filename to check.
- * @mode: Mode ("read" or "write" or "read/write" or "execute").
- *
- * Returns 0 on success, negative value otherwise.
- *
- * Caller holds tomoyo_read_lock().
- */
-static int tomoyo_file_perm(struct tomoyo_request_info *r,
- const struct tomoyo_path_info *filename,
- const u8 mode)
+static bool tomoyo_check_mkdev_acl(const struct tomoyo_request_info *r,
+ const struct tomoyo_acl_info *ptr)
{
- const char *msg = "<unknown>";
- int error = 0;
- u32 perm = 0;
+ const struct tomoyo_mkdev_acl *acl =
+ container_of(ptr, typeof(*acl), head);
+ return (acl->perm & (1 << r->param.mkdev.operation)) &&
+ tomoyo_compare_number_union(r->param.mkdev.mode,
+ &acl->mode) &&
+ tomoyo_compare_number_union(r->param.mkdev.major,
+ &acl->major) &&
+ tomoyo_compare_number_union(r->param.mkdev.minor,
+ &acl->minor) &&
+ tomoyo_compare_name_union(r->param.mkdev.filename,
+ &acl->name);
+}
- if (!filename)
- return 0;
+static bool tomoyo_same_path_acl(const struct tomoyo_acl_info *a,
+ const struct tomoyo_acl_info *b)
+{
+ const struct tomoyo_path_acl *p1 = container_of(a, typeof(*p1), head);
+ const struct tomoyo_path_acl *p2 = container_of(b, typeof(*p2), head);
+ return tomoyo_same_acl_head(&p1->head, &p2->head) &&
+ tomoyo_same_name_union(&p1->name, &p2->name);
+}
- if (mode == 6) {
- msg = tomoyo_path2keyword(TOMOYO_TYPE_READ_WRITE);
- perm = 1 << TOMOYO_TYPE_READ_WRITE;
- } else if (mode == 4) {
- msg = tomoyo_path2keyword(TOMOYO_TYPE_READ);
- perm = 1 << TOMOYO_TYPE_READ;
- } else if (mode == 2) {
- msg = tomoyo_path2keyword(TOMOYO_TYPE_WRITE);
- perm = 1 << TOMOYO_TYPE_WRITE;
- } else if (mode == 1) {
- msg = tomoyo_path2keyword(TOMOYO_TYPE_EXECUTE);
- perm = 1 << TOMOYO_TYPE_EXECUTE;
- } else
- BUG();
- do {
- error = tomoyo_path_acl(r, filename, perm, mode != 1);
- if (error && mode == 4 && !r->domain->ignore_global_allow_read
- && tomoyo_is_globally_readable_file(filename))
- error = 0;
- if (!error)
- break;
- tomoyo_warn_log(r, "%s %s", msg, filename->name);
- error = tomoyo_supervisor(r, "allow_%s %s\n", msg,
- mode == 1 ? filename->name :
- tomoyo_file_pattern(filename));
- /*
- * Do not retry for execute request, for alias may have
- * changed.
- */
- } while (error == TOMOYO_RETRY_REQUEST && mode != 1);
- if (r->mode != TOMOYO_CONFIG_ENFORCING)
- error = 0;
- return error;
+static bool tomoyo_merge_path_acl(struct tomoyo_acl_info *a,
+ struct tomoyo_acl_info *b,
+ const bool is_delete)
+{
+ u16 * const a_perm = &container_of(a, struct tomoyo_path_acl, head)
+ ->perm;
+ u16 perm = *a_perm;
+ const u16 b_perm = container_of(b, struct tomoyo_path_acl, head)->perm;
+ if (is_delete) {
+ perm &= ~b_perm;
+ if ((perm & TOMOYO_RW_MASK) != TOMOYO_RW_MASK)
+ perm &= ~(1 << TOMOYO_TYPE_READ_WRITE);
+ else if (!(perm & (1 << TOMOYO_TYPE_READ_WRITE)))
+ perm &= ~TOMOYO_RW_MASK;
+ } else {
+ perm |= b_perm;
+ if ((perm & TOMOYO_RW_MASK) == TOMOYO_RW_MASK)
+ perm |= (1 << TOMOYO_TYPE_READ_WRITE);
+ else if (perm & (1 << TOMOYO_TYPE_READ_WRITE))
+ perm |= TOMOYO_RW_MASK;
+ }
+ *a_perm = perm;
+ return !perm;
}
/**
* Caller holds tomoyo_read_lock().
*/
static int tomoyo_update_path_acl(const u8 type, const char *filename,
- struct tomoyo_domain_info *const domain,
+ struct tomoyo_domain_info * const domain,
const bool is_delete)
{
- static const u16 tomoyo_rw_mask =
- (1 << TOMOYO_TYPE_READ) | (1 << TOMOYO_TYPE_WRITE);
- const u16 perm = 1 << type;
- struct tomoyo_acl_info *ptr;
struct tomoyo_path_acl e = {
.head.type = TOMOYO_TYPE_PATH_ACL,
- .perm = perm
+ .perm = 1 << type
};
- int error = is_delete ? -ENOENT : -ENOMEM;
-
- if (type == TOMOYO_TYPE_READ_WRITE)
- e.perm |= tomoyo_rw_mask;
- if (!domain)
- return -EINVAL;
+ int error;
+ if (e.perm == (1 << TOMOYO_TYPE_READ_WRITE))
+ e.perm |= TOMOYO_RW_MASK;
if (!tomoyo_parse_name_union(filename, &e.name))
return -EINVAL;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
- struct tomoyo_path_acl *acl =
- container_of(ptr, struct tomoyo_path_acl, head);
- if (!tomoyo_is_same_path_acl(acl, &e))
- continue;
- if (is_delete) {
- acl->perm &= ~perm;
- if ((acl->perm & tomoyo_rw_mask) != tomoyo_rw_mask)
- acl->perm &= ~(1 << TOMOYO_TYPE_READ_WRITE);
- else if (!(acl->perm & (1 << TOMOYO_TYPE_READ_WRITE)))
- acl->perm &= ~tomoyo_rw_mask;
- } else {
- acl->perm |= perm;
- if ((acl->perm & tomoyo_rw_mask) == tomoyo_rw_mask)
- acl->perm |= 1 << TOMOYO_TYPE_READ_WRITE;
- else if (acl->perm & (1 << TOMOYO_TYPE_READ_WRITE))
- acl->perm |= tomoyo_rw_mask;
- }
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_path_acl *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->head.list,
- &domain->acl_info_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
- out:
+ error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain,
+ tomoyo_same_path_acl,
+ tomoyo_merge_path_acl);
tomoyo_put_name_union(&e.name);
return error;
}
+static bool tomoyo_same_mkdev_acl(const struct tomoyo_acl_info *a,
+ const struct tomoyo_acl_info *b)
+{
+ const struct tomoyo_mkdev_acl *p1 = container_of(a, typeof(*p1),
+ head);
+ const struct tomoyo_mkdev_acl *p2 = container_of(b, typeof(*p2),
+ head);
+ return tomoyo_same_acl_head(&p1->head, &p2->head)
+ && tomoyo_same_name_union(&p1->name, &p2->name)
+ && tomoyo_same_number_union(&p1->mode, &p2->mode)
+ && tomoyo_same_number_union(&p1->major, &p2->major)
+ && tomoyo_same_number_union(&p1->minor, &p2->minor);
+}
+
+static bool tomoyo_merge_mkdev_acl(struct tomoyo_acl_info *a,
+ struct tomoyo_acl_info *b,
+ const bool is_delete)
+{
+ u8 *const a_perm = &container_of(a, struct tomoyo_mkdev_acl,
+ head)->perm;
+ u8 perm = *a_perm;
+ const u8 b_perm = container_of(b, struct tomoyo_mkdev_acl, head)
+ ->perm;
+ if (is_delete)
+ perm &= ~b_perm;
+ else
+ perm |= b_perm;
+ *a_perm = perm;
+ return !perm;
+}
+
/**
- * tomoyo_update_path_number3_acl - Update "struct tomoyo_path_number3_acl" list.
+ * tomoyo_update_mkdev_acl - Update "struct tomoyo_mkdev_acl" list.
*
* @type: Type of operation.
* @filename: Filename.
* @is_delete: True if it is a delete request.
*
* Returns 0 on success, negative value otherwise.
+ *
+ * Caller holds tomoyo_read_lock().
*/
-static inline int tomoyo_update_path_number3_acl(const u8 type,
- const char *filename,
- char *mode,
- char *major, char *minor,
- struct tomoyo_domain_info *
- const domain,
- const bool is_delete)
+static int tomoyo_update_mkdev_acl(const u8 type, const char *filename,
+ char *mode, char *major, char *minor,
+ struct tomoyo_domain_info * const
+ domain, const bool is_delete)
{
- const u8 perm = 1 << type;
- struct tomoyo_acl_info *ptr;
- struct tomoyo_path_number3_acl e = {
- .head.type = TOMOYO_TYPE_PATH_NUMBER3_ACL,
- .perm = perm
+ struct tomoyo_mkdev_acl e = {
+ .head.type = TOMOYO_TYPE_MKDEV_ACL,
+ .perm = 1 << type
};
int error = is_delete ? -ENOENT : -ENOMEM;
if (!tomoyo_parse_name_union(filename, &e.name) ||
!tomoyo_parse_number_union(major, &e.major) ||
!tomoyo_parse_number_union(minor, &e.minor))
goto out;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
- struct tomoyo_path_number3_acl *acl =
- container_of(ptr, struct tomoyo_path_number3_acl, head);
- if (!tomoyo_is_same_path_number3_acl(acl, &e))
- continue;
- if (is_delete)
- acl->perm &= ~perm;
- else
- acl->perm |= perm;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_path_number3_acl *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->head.list,
- &domain->acl_info_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
+ error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain,
+ tomoyo_same_mkdev_acl,
+ tomoyo_merge_mkdev_acl);
out:
tomoyo_put_name_union(&e.name);
tomoyo_put_number_union(&e.mode);
return error;
}
+static bool tomoyo_same_path2_acl(const struct tomoyo_acl_info *a,
+ const struct tomoyo_acl_info *b)
+{
+ const struct tomoyo_path2_acl *p1 = container_of(a, typeof(*p1), head);
+ const struct tomoyo_path2_acl *p2 = container_of(b, typeof(*p2), head);
+ return tomoyo_same_acl_head(&p1->head, &p2->head)
+ && tomoyo_same_name_union(&p1->name1, &p2->name1)
+ && tomoyo_same_name_union(&p1->name2, &p2->name2);
+}
+
+static bool tomoyo_merge_path2_acl(struct tomoyo_acl_info *a,
+ struct tomoyo_acl_info *b,
+ const bool is_delete)
+{
+ u8 * const a_perm = &container_of(a, struct tomoyo_path2_acl, head)
+ ->perm;
+ u8 perm = *a_perm;
+ const u8 b_perm = container_of(b, struct tomoyo_path2_acl, head)->perm;
+ if (is_delete)
+ perm &= ~b_perm;
+ else
+ perm |= b_perm;
+ *a_perm = perm;
+ return !perm;
+}
+
/**
* tomoyo_update_path2_acl - Update "struct tomoyo_path2_acl" list.
*
*/
static int tomoyo_update_path2_acl(const u8 type, const char *filename1,
const char *filename2,
- struct tomoyo_domain_info *const domain,
+ struct tomoyo_domain_info * const domain,
const bool is_delete)
{
- const u8 perm = 1 << type;
struct tomoyo_path2_acl e = {
.head.type = TOMOYO_TYPE_PATH2_ACL,
- .perm = perm
+ .perm = 1 << type
};
- struct tomoyo_acl_info *ptr;
int error = is_delete ? -ENOENT : -ENOMEM;
-
- if (!domain)
- return -EINVAL;
if (!tomoyo_parse_name_union(filename1, &e.name1) ||
!tomoyo_parse_name_union(filename2, &e.name2))
goto out;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
- struct tomoyo_path2_acl *acl =
- container_of(ptr, struct tomoyo_path2_acl, head);
- if (!tomoyo_is_same_path2_acl(acl, &e))
- continue;
- if (is_delete)
- acl->perm &= ~perm;
- else
- acl->perm |= perm;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_path2_acl *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->head.list,
- &domain->acl_info_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
+ error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain,
+ tomoyo_same_path2_acl,
+ tomoyo_merge_path2_acl);
out:
tomoyo_put_name_union(&e.name1);
tomoyo_put_name_union(&e.name2);
return error;
}
-/**
- * tomoyo_path_number3_acl - Check permission for path/number/number/number operation.
- *
- * @r: Pointer to "struct tomoyo_request_info".
- * @filename: Filename to check.
- * @perm: Permission.
- * @mode: Create mode.
- * @major: Device major number.
- * @minor: Device minor number.
- *
- * Returns 0 on success, -EPERM otherwise.
- *
- * Caller holds tomoyo_read_lock().
- */
-static int tomoyo_path_number3_acl(struct tomoyo_request_info *r,
- const struct tomoyo_path_info *filename,
- const u16 perm, const unsigned int mode,
- const unsigned int major,
- const unsigned int minor)
-{
- struct tomoyo_domain_info *domain = r->domain;
- struct tomoyo_acl_info *ptr;
- int error = -EPERM;
- list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
- struct tomoyo_path_number3_acl *acl;
- if (ptr->type != TOMOYO_TYPE_PATH_NUMBER3_ACL)
- continue;
- acl = container_of(ptr, struct tomoyo_path_number3_acl, head);
- if (!tomoyo_compare_number_union(mode, &acl->mode))
- continue;
- if (!tomoyo_compare_number_union(major, &acl->major))
- continue;
- if (!tomoyo_compare_number_union(minor, &acl->minor))
- continue;
- if (!(acl->perm & perm))
- continue;
- if (!tomoyo_compare_name_union(filename, &acl->name))
- continue;
- error = 0;
- break;
- }
- return error;
-}
-
-/**
- * tomoyo_path2_acl - Check permission for double path operation.
- *
- * @r: Pointer to "struct tomoyo_request_info".
- * @type: Type of operation.
- * @filename1: First filename to check.
- * @filename2: Second filename to check.
- *
- * Returns 0 on success, -EPERM otherwise.
- *
- * Caller holds tomoyo_read_lock().
- */
-static int tomoyo_path2_acl(const struct tomoyo_request_info *r, const u8 type,
- const struct tomoyo_path_info *filename1,
- const struct tomoyo_path_info *filename2)
-{
- const struct tomoyo_domain_info *domain = r->domain;
- struct tomoyo_acl_info *ptr;
- const u8 perm = 1 << type;
- int error = -EPERM;
-
- list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
- struct tomoyo_path2_acl *acl;
- if (ptr->type != TOMOYO_TYPE_PATH2_ACL)
- continue;
- acl = container_of(ptr, struct tomoyo_path2_acl, head);
- if (!(acl->perm & perm))
- continue;
- if (!tomoyo_compare_name_union(filename1, &acl->name1))
- continue;
- if (!tomoyo_compare_name_union(filename2, &acl->name2))
- continue;
- error = 0;
- break;
- }
- return error;
-}
-
/**
* tomoyo_path_permission - Check permission for single path operation.
*
*
* Caller holds tomoyo_read_lock().
*/
-static int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
- const struct tomoyo_path_info *filename)
+int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
+ const struct tomoyo_path_info *filename)
{
- const char *msg;
int error;
next:
+ r->type = tomoyo_p2mac[operation];
+ r->mode = tomoyo_get_mode(r->profile, r->type);
+ if (r->mode == TOMOYO_CONFIG_DISABLED)
+ return 0;
+ r->param_type = TOMOYO_TYPE_PATH_ACL;
+ r->param.path.filename = filename;
+ r->param.path.operation = operation;
do {
- error = tomoyo_path_acl(r, filename, 1 << operation, 1);
- if (!error)
- break;
- msg = tomoyo_path2keyword(operation);
- tomoyo_warn_log(r, "%s %s", msg, filename->name);
- error = tomoyo_supervisor(r, "allow_%s %s\n", msg,
- tomoyo_file_pattern(filename));
- } while (error == TOMOYO_RETRY_REQUEST);
- if (r->mode != TOMOYO_CONFIG_ENFORCING)
- error = 0;
+ tomoyo_check_acl(r, tomoyo_check_path_acl);
+ if (!r->granted && operation == TOMOYO_TYPE_READ &&
+ !r->domain->ignore_global_allow_read &&
+ tomoyo_globally_readable_file(filename))
+ r->granted = true;
+ error = tomoyo_audit_path_log(r);
+ /*
+ * Do not retry for execute request, for alias may have
+ * changed.
+ */
+ } while (error == TOMOYO_RETRY_REQUEST &&
+ operation != TOMOYO_TYPE_EXECUTE);
/*
* Since "allow_truncate" doesn't imply "allow_rewrite" permission,
* we need to check "allow_rewrite" permission if the filename is
* specified by "deny_rewrite" keyword.
*/
if (!error && operation == TOMOYO_TYPE_TRUNCATE &&
- tomoyo_is_no_rewrite_file(filename)) {
+ tomoyo_no_rewrite_file(filename)) {
operation = TOMOYO_TYPE_REWRITE;
goto next;
}
return error;
}
-/**
- * tomoyo_path_number_acl - Check permission for ioctl/chmod/chown/chgrp operation.
- *
- * @r: Pointer to "struct tomoyo_request_info".
- * @type: Operation.
- * @filename: Filename to check.
- * @number: Number.
- *
- * Returns 0 on success, -EPERM otherwise.
- *
- * Caller holds tomoyo_read_lock().
- */
-static int tomoyo_path_number_acl(struct tomoyo_request_info *r, const u8 type,
- const struct tomoyo_path_info *filename,
- const unsigned long number)
+static bool tomoyo_same_path_number_acl(const struct tomoyo_acl_info *a,
+ const struct tomoyo_acl_info *b)
{
- struct tomoyo_domain_info *domain = r->domain;
- struct tomoyo_acl_info *ptr;
- const u8 perm = 1 << type;
- int error = -EPERM;
- list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
- struct tomoyo_path_number_acl *acl;
- if (ptr->type != TOMOYO_TYPE_PATH_NUMBER_ACL)
- continue;
- acl = container_of(ptr, struct tomoyo_path_number_acl,
- head);
- if (!(acl->perm & perm) ||
- !tomoyo_compare_number_union(number, &acl->number) ||
- !tomoyo_compare_name_union(filename, &acl->name))
- continue;
- error = 0;
- break;
- }
- return error;
+ const struct tomoyo_path_number_acl *p1 = container_of(a, typeof(*p1),
+ head);
+ const struct tomoyo_path_number_acl *p2 = container_of(b, typeof(*p2),
+ head);
+ return tomoyo_same_acl_head(&p1->head, &p2->head)
+ && tomoyo_same_name_union(&p1->name, &p2->name)
+ && tomoyo_same_number_union(&p1->number, &p2->number);
+}
+
+static bool tomoyo_merge_path_number_acl(struct tomoyo_acl_info *a,
+ struct tomoyo_acl_info *b,
+ const bool is_delete)
+{
+ u8 * const a_perm = &container_of(a, struct tomoyo_path_number_acl,
+ head)->perm;
+ u8 perm = *a_perm;
+ const u8 b_perm = container_of(b, struct tomoyo_path_number_acl, head)
+ ->perm;
+ if (is_delete)
+ perm &= ~b_perm;
+ else
+ perm |= b_perm;
+ *a_perm = perm;
+ return !perm;
}
/**
*
* Returns 0 on success, negative value otherwise.
*/
-static inline int tomoyo_update_path_number_acl(const u8 type,
- const char *filename,
- char *number,
- struct tomoyo_domain_info *
- const domain,
- const bool is_delete)
+static int tomoyo_update_path_number_acl(const u8 type, const char *filename,
+ char *number,
+ struct tomoyo_domain_info * const
+ domain,
+ const bool is_delete)
{
- const u8 perm = 1 << type;
- struct tomoyo_acl_info *ptr;
struct tomoyo_path_number_acl e = {
.head.type = TOMOYO_TYPE_PATH_NUMBER_ACL,
- .perm = perm
+ .perm = 1 << type
};
int error = is_delete ? -ENOENT : -ENOMEM;
- if (!domain)
- return -EINVAL;
if (!tomoyo_parse_name_union(filename, &e.name))
return -EINVAL;
if (!tomoyo_parse_number_union(number, &e.number))
goto out;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
- struct tomoyo_path_number_acl *acl =
- container_of(ptr, struct tomoyo_path_number_acl, head);
- if (!tomoyo_is_same_path_number_acl(acl, &e))
- continue;
- if (is_delete)
- acl->perm &= ~perm;
- else
- acl->perm |= perm;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_path_number_acl *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->head.list,
- &domain->acl_info_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
+ error = tomoyo_update_domain(&e.head, sizeof(e), is_delete, domain,
+ tomoyo_same_path_number_acl,
+ tomoyo_merge_path_number_acl);
out:
tomoyo_put_name_union(&e.name);
tomoyo_put_number_union(&e.number);
const struct tomoyo_path_info *filename,
const unsigned long number)
{
- char buffer[64];
int error;
- u8 radix;
- const char *msg;
if (!filename)
return 0;
- switch (type) {
- case TOMOYO_TYPE_CREATE:
- case TOMOYO_TYPE_MKDIR:
- case TOMOYO_TYPE_MKFIFO:
- case TOMOYO_TYPE_MKSOCK:
- case TOMOYO_TYPE_CHMOD:
- radix = TOMOYO_VALUE_TYPE_OCTAL;
- break;
- case TOMOYO_TYPE_IOCTL:
- radix = TOMOYO_VALUE_TYPE_HEXADECIMAL;
- break;
- default:
- radix = TOMOYO_VALUE_TYPE_DECIMAL;
- break;
- }
- tomoyo_print_ulong(buffer, sizeof(buffer), number, radix);
+ r->param_type = TOMOYO_TYPE_PATH_NUMBER_ACL;
+ r->param.path_number.operation = type;
+ r->param.path_number.filename = filename;
+ r->param.path_number.number = number;
do {
- error = tomoyo_path_number_acl(r, type, filename, number);
- if (!error)
- break;
- msg = tomoyo_path_number2keyword(type);
- tomoyo_warn_log(r, "%s %s %s", msg, filename->name, buffer);
- error = tomoyo_supervisor(r, "allow_%s %s %s\n", msg,
- tomoyo_file_pattern(filename),
- buffer);
+ tomoyo_check_acl(r, tomoyo_check_path_number_acl);
+ error = tomoyo_audit_path_number_log(r);
} while (error == TOMOYO_RETRY_REQUEST);
- if (r->mode != TOMOYO_CONFIG_ENFORCING)
- error = 0;
return error;
}
struct tomoyo_path_info buf;
int idx;
- if (tomoyo_init_request_info(&r, NULL) == TOMOYO_CONFIG_DISABLED ||
- !path->mnt || !path->dentry)
+ if (tomoyo_init_request_info(&r, NULL, tomoyo_pn2mac[type])
+ == TOMOYO_CONFIG_DISABLED || !path->mnt || !path->dentry)
return 0;
idx = tomoyo_read_lock();
if (!tomoyo_get_realpath(&buf, path))
return error;
}
-/**
- * tomoyo_check_exec_perm - Check permission for "execute".
- *
- * @domain: Pointer to "struct tomoyo_domain_info".
- * @filename: Check permission for "execute".
- *
- * Returns 0 on success, negativevalue otherwise.
- *
- * Caller holds tomoyo_read_lock().
- */
-int tomoyo_check_exec_perm(struct tomoyo_domain_info *domain,
- const struct tomoyo_path_info *filename)
-{
- struct tomoyo_request_info r;
-
- if (tomoyo_init_request_info(&r, NULL) == TOMOYO_CONFIG_DISABLED)
- return 0;
- return tomoyo_file_perm(&r, filename, 1);
-}
-
/**
* tomoyo_check_open_permission - Check permission for "read" and "write".
*
struct tomoyo_request_info r;
int idx;
- if (tomoyo_init_request_info(&r, domain) == TOMOYO_CONFIG_DISABLED ||
- !path->mnt)
- return 0;
- if (acc_mode == 0)
- return 0;
- if (path->dentry->d_inode && S_ISDIR(path->dentry->d_inode->i_mode))
- /*
- * I don't check directories here because mkdir() and rmdir()
- * don't call me.
- */
+ if (!path->mnt ||
+ (path->dentry->d_inode && S_ISDIR(path->dentry->d_inode->i_mode)))
return 0;
+ buf.name = NULL;
+ r.mode = TOMOYO_CONFIG_DISABLED;
idx = tomoyo_read_lock();
if (!tomoyo_get_realpath(&buf, path))
goto out;
* we need to check "allow_rewrite" permission when the filename is not
* opened for append mode or the filename is truncated at open time.
*/
- if ((acc_mode & MAY_WRITE) &&
- ((flag & O_TRUNC) || !(flag & O_APPEND)) &&
- (tomoyo_is_no_rewrite_file(&buf))) {
- error = tomoyo_path_permission(&r, TOMOYO_TYPE_REWRITE, &buf);
+ if ((acc_mode & MAY_WRITE) && !(flag & O_APPEND)
+ && tomoyo_init_request_info(&r, domain, TOMOYO_MAC_FILE_REWRITE)
+ != TOMOYO_CONFIG_DISABLED) {
+ if (!tomoyo_get_realpath(&buf, path)) {
+ error = -ENOMEM;
+ goto out;
+ }
+ if (tomoyo_no_rewrite_file(&buf))
+ error = tomoyo_path_permission(&r, TOMOYO_TYPE_REWRITE,
+ &buf);
+ }
+ if (!error && acc_mode &&
+ tomoyo_init_request_info(&r, domain, TOMOYO_MAC_FILE_OPEN)
+ != TOMOYO_CONFIG_DISABLED) {
+ u8 operation;
+ if (!buf.name && !tomoyo_get_realpath(&buf, path)) {
+ error = -ENOMEM;
+ goto out;
+ }
+ if (acc_mode == (MAY_READ | MAY_WRITE))
+ operation = TOMOYO_TYPE_READ_WRITE;
+ else if (acc_mode == MAY_READ)
+ operation = TOMOYO_TYPE_READ;
+ else
+ operation = TOMOYO_TYPE_WRITE;
+ error = tomoyo_path_permission(&r, operation, &buf);
}
- if (!error)
- error = tomoyo_file_perm(&r, &buf, acc_mode);
- if (!error && (flag & O_TRUNC))
- error = tomoyo_path_permission(&r, TOMOYO_TYPE_TRUNCATE, &buf);
out:
kfree(buf.name);
tomoyo_read_unlock(idx);
struct tomoyo_request_info r;
int idx;
- if (tomoyo_init_request_info(&r, NULL) == TOMOYO_CONFIG_DISABLED ||
- !path->mnt)
+ if (!path->mnt)
+ return 0;
+ if (tomoyo_init_request_info(&r, NULL, tomoyo_p2mac[operation])
+ == TOMOYO_CONFIG_DISABLED)
return 0;
+ buf.name = NULL;
idx = tomoyo_read_lock();
if (!tomoyo_get_realpath(&buf, path))
goto out;
switch (operation) {
case TOMOYO_TYPE_REWRITE:
- if (!tomoyo_is_no_rewrite_file(&buf)) {
+ if (!tomoyo_no_rewrite_file(&buf)) {
error = 0;
goto out;
}
break;
case TOMOYO_TYPE_RMDIR:
case TOMOYO_TYPE_CHROOT:
+ case TOMOYO_TYPE_UMOUNT:
tomoyo_add_slash(&buf);
break;
}
}
/**
- * tomoyo_path_number3_perm2 - Check permission for path/number/number/number operation.
- *
- * @r: Pointer to "struct tomoyo_request_info".
- * @operation: Type of operation.
- * @filename: Filename to check.
- * @mode: Create mode.
- * @dev: Device number.
- *
- * Returns 0 on success, negative value otherwise.
- *
- * Caller holds tomoyo_read_lock().
- */
-static int tomoyo_path_number3_perm2(struct tomoyo_request_info *r,
- const u8 operation,
- const struct tomoyo_path_info *filename,
- const unsigned int mode,
- const unsigned int dev)
-{
- int error;
- const char *msg;
- const unsigned int major = MAJOR(dev);
- const unsigned int minor = MINOR(dev);
-
- do {
- error = tomoyo_path_number3_acl(r, filename, 1 << operation,
- mode, major, minor);
- if (!error)
- break;
- msg = tomoyo_path_number32keyword(operation);
- tomoyo_warn_log(r, "%s %s 0%o %u %u", msg, filename->name,
- mode, major, minor);
- error = tomoyo_supervisor(r, "allow_%s %s 0%o %u %u\n", msg,
- tomoyo_file_pattern(filename), mode,
- major, minor);
- } while (error == TOMOYO_RETRY_REQUEST);
- if (r->mode != TOMOYO_CONFIG_ENFORCING)
- error = 0;
- return error;
-}
-
-/**
- * tomoyo_path_number3_perm - Check permission for "mkblock" and "mkchar".
+ * tomoyo_mkdev_perm - Check permission for "mkblock" and "mkchar".
*
* @operation: Type of operation. (TOMOYO_TYPE_MKCHAR or TOMOYO_TYPE_MKBLOCK)
* @path: Pointer to "struct path".
*
* Returns 0 on success, negative value otherwise.
*/
-int tomoyo_path_number3_perm(const u8 operation, struct path *path,
+int tomoyo_mkdev_perm(const u8 operation, struct path *path,
const unsigned int mode, unsigned int dev)
{
struct tomoyo_request_info r;
struct tomoyo_path_info buf;
int idx;
- if (tomoyo_init_request_info(&r, NULL) == TOMOYO_CONFIG_DISABLED ||
- !path->mnt)
+ if (!path->mnt ||
+ tomoyo_init_request_info(&r, NULL, tomoyo_pnnn2mac[operation])
+ == TOMOYO_CONFIG_DISABLED)
return 0;
idx = tomoyo_read_lock();
error = -ENOMEM;
if (tomoyo_get_realpath(&buf, path)) {
- error = tomoyo_path_number3_perm2(&r, operation, &buf, mode,
- new_decode_dev(dev));
+ dev = new_decode_dev(dev);
+ r.param_type = TOMOYO_TYPE_MKDEV_ACL;
+ r.param.mkdev.filename = &buf;
+ r.param.mkdev.operation = operation;
+ r.param.mkdev.mode = mode;
+ r.param.mkdev.major = MAJOR(dev);
+ r.param.mkdev.minor = MINOR(dev);
+ tomoyo_check_acl(&r, tomoyo_check_mkdev_acl);
+ error = tomoyo_audit_mkdev_log(&r);
kfree(buf.name);
}
tomoyo_read_unlock(idx);
struct path *path2)
{
int error = -ENOMEM;
- const char *msg;
struct tomoyo_path_info buf1;
struct tomoyo_path_info buf2;
struct tomoyo_request_info r;
int idx;
- if (tomoyo_init_request_info(&r, NULL) == TOMOYO_CONFIG_DISABLED ||
- !path1->mnt || !path2->mnt)
+ if (!path1->mnt || !path2->mnt ||
+ tomoyo_init_request_info(&r, NULL, tomoyo_pp2mac[operation])
+ == TOMOYO_CONFIG_DISABLED)
return 0;
buf1.name = NULL;
buf2.name = NULL;
if (!tomoyo_get_realpath(&buf1, path1) ||
!tomoyo_get_realpath(&buf2, path2))
goto out;
- {
- struct dentry *dentry = path1->dentry;
- if (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode)) {
- tomoyo_add_slash(&buf1);
- tomoyo_add_slash(&buf2);
- }
- }
+ switch (operation) {
+ struct dentry *dentry;
+ case TOMOYO_TYPE_RENAME:
+ case TOMOYO_TYPE_LINK:
+ dentry = path1->dentry;
+ if (!dentry->d_inode || !S_ISDIR(dentry->d_inode->i_mode))
+ break;
+ /* fall through */
+ case TOMOYO_TYPE_PIVOT_ROOT:
+ tomoyo_add_slash(&buf1);
+ tomoyo_add_slash(&buf2);
+ break;
+ }
+ r.param_type = TOMOYO_TYPE_PATH2_ACL;
+ r.param.path2.operation = operation;
+ r.param.path2.filename1 = &buf1;
+ r.param.path2.filename2 = &buf2;
do {
- error = tomoyo_path2_acl(&r, operation, &buf1, &buf2);
- if (!error)
- break;
- msg = tomoyo_path22keyword(operation);
- tomoyo_warn_log(&r, "%s %s %s", msg, buf1.name, buf2.name);
- error = tomoyo_supervisor(&r, "allow_%s %s %s\n", msg,
- tomoyo_file_pattern(&buf1),
- tomoyo_file_pattern(&buf2));
- } while (error == TOMOYO_RETRY_REQUEST);
+ tomoyo_check_acl(&r, tomoyo_check_path2_acl);
+ error = tomoyo_audit_path2_log(&r);
+ } while (error == TOMOYO_RETRY_REQUEST);
out:
kfree(buf1.name);
kfree(buf2.name);
u8 type;
if (!tomoyo_tokenize(data, w, sizeof(w)) || !w[1][0])
return -EINVAL;
- if (strncmp(w[0], "allow_", 6)) {
- unsigned int perm;
- if (sscanf(w[0], "%u", &perm) == 1)
- return tomoyo_update_file_acl((u8) perm, w[1], domain,
- is_delete);
+ if (strncmp(w[0], "allow_", 6))
goto out;
- }
w[0] += 6;
for (type = 0; type < TOMOYO_MAX_PATH_OPERATION; type++) {
if (strcmp(w[0], tomoyo_path_keyword[type]))
}
if (!w[3][0] || !w[4][0])
goto out;
- for (type = 0; type < TOMOYO_MAX_PATH_NUMBER3_OPERATION; type++) {
- if (strcmp(w[0], tomoyo_path_number3_keyword[type]))
+ for (type = 0; type < TOMOYO_MAX_MKDEV_OPERATION; type++) {
+ if (strcmp(w[0], tomoyo_mkdev_keyword[type]))
continue;
- return tomoyo_update_path_number3_acl(type, w[1], w[2], w[3],
- w[4], domain, is_delete);
+ return tomoyo_update_mkdev_acl(type, w[1], w[2], w[3],
+ w[4], domain, is_delete);
}
out:
return -EINVAL;
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff