/*
* security/tomoyo/file.c
*
- * Pathname restriction functions.
- *
- * Copyright (C) 2005-2010 NTT DATA CORPORATION
+ * Copyright (C) 2005-2011 NTT DATA CORPORATION
*/
#include "common.h"
#include <linux/slab.h>
-/* Keyword array for operations with one pathname. */
-const char *tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION] = {
- [TOMOYO_TYPE_EXECUTE] = "execute",
- [TOMOYO_TYPE_READ] = "read",
- [TOMOYO_TYPE_WRITE] = "write",
- [TOMOYO_TYPE_APPEND] = "append",
- [TOMOYO_TYPE_UNLINK] = "unlink",
- [TOMOYO_TYPE_GETATTR] = "getattr",
- [TOMOYO_TYPE_RMDIR] = "rmdir",
- [TOMOYO_TYPE_TRUNCATE] = "truncate",
- [TOMOYO_TYPE_SYMLINK] = "symlink",
- [TOMOYO_TYPE_CHROOT] = "chroot",
- [TOMOYO_TYPE_UMOUNT] = "unmount",
-};
-
-/* Keyword array for operations with one pathname and three numbers. */
-const char *tomoyo_mkdev_keyword[TOMOYO_MAX_MKDEV_OPERATION] = {
- [TOMOYO_TYPE_MKBLOCK] = "mkblock",
- [TOMOYO_TYPE_MKCHAR] = "mkchar",
-};
-
-/* Keyword array for operations with two pathnames. */
-const char *tomoyo_path2_keyword[TOMOYO_MAX_PATH2_OPERATION] = {
- [TOMOYO_TYPE_LINK] = "link",
- [TOMOYO_TYPE_RENAME] = "rename",
- [TOMOYO_TYPE_PIVOT_ROOT] = "pivot_root",
-};
-
-/* Keyword array for operations with one pathname and one number. */
-const char *tomoyo_path_number_keyword[TOMOYO_MAX_PATH_NUMBER_OPERATION] = {
- [TOMOYO_TYPE_CREATE] = "create",
- [TOMOYO_TYPE_MKDIR] = "mkdir",
- [TOMOYO_TYPE_MKFIFO] = "mkfifo",
- [TOMOYO_TYPE_MKSOCK] = "mksock",
- [TOMOYO_TYPE_IOCTL] = "ioctl",
- [TOMOYO_TYPE_CHMOD] = "chmod",
- [TOMOYO_TYPE_CHOWN] = "chown",
- [TOMOYO_TYPE_CHGRP] = "chgrp",
-};
-
/*
* Mapping table from "enum tomoyo_path_acl_index" to "enum tomoyo_mac_index".
*/
/*
* Mapping table from "enum tomoyo_mkdev_acl_index" to "enum tomoyo_mac_index".
*/
-static const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION] = {
+const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION] = {
[TOMOYO_TYPE_MKBLOCK] = TOMOYO_MAC_FILE_MKBLOCK,
[TOMOYO_TYPE_MKCHAR] = TOMOYO_MAC_FILE_MKCHAR,
};
/*
* Mapping table from "enum tomoyo_path2_acl_index" to "enum tomoyo_mac_index".
*/
-static const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION] = {
+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,
* Mapping table from "enum tomoyo_path_number_acl_index" to
* "enum tomoyo_mac_index".
*/
-static const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION] = {
+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_fill_path_info(buf);
return true;
}
- return false;
+ return false;
}
/**
*/
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,
- filename->name);
+ return tomoyo_supervisor(r, "file %s %s\n", tomoyo_path_keyword
+ [r->param.path.operation],
+ r->param.path.filename->name);
}
/**
*/
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,
- filename1->name, filename2->name);
+ return tomoyo_supervisor(r, "file %s %s %s\n", tomoyo_mac_keywords
+ [tomoyo_pp2mac[r->param.path2.operation]],
+ r->param.path2.filename1->name,
+ r->param.path2.filename2->name);
}
/**
*/
static int tomoyo_audit_mkdev_log(struct tomoyo_request_info *r)
{
- const char *operation = tomoyo_mkdev_keyword[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,
- filename->name, mode, major, minor);
+ return tomoyo_supervisor(r, "file %s %s 0%o %u %u\n",
+ tomoyo_mac_keywords
+ [tomoyo_pnnn2mac[r->param.mkdev.operation]],
+ r->param.mkdev.filename->name,
+ r->param.mkdev.mode, r->param.mkdev.major,
+ r->param.mkdev.minor);
}
/**
{
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:
}
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,
- filename->name, buffer);
+ return tomoyo_supervisor(r, "file %s %s %s\n", tomoyo_mac_keywords
+ [tomoyo_pn2mac[type]],
+ r->param.path_number.filename->name, buffer);
}
/**
int error;
r->type = tomoyo_p2mac[operation];
- r->mode = tomoyo_get_mode(r->profile, r->type);
+ r->mode = tomoyo_get_mode(r->domain->ns, r->profile, r->type);
if (r->mode == TOMOYO_CONFIG_DISABLED)
return 0;
r->param_type = TOMOYO_TYPE_PATH_ACL;
unsigned long number)
{
struct tomoyo_request_info r;
+ struct tomoyo_obj_info obj = {
+ .path1 = *path,
+ };
int error = -ENOMEM;
struct tomoyo_path_info buf;
int idx;
if (tomoyo_init_request_info(&r, NULL, tomoyo_pn2mac[type])
- == TOMOYO_CONFIG_DISABLED || !path->mnt || !path->dentry)
+ == TOMOYO_CONFIG_DISABLED || !path->dentry)
return 0;
idx = tomoyo_read_lock();
if (!tomoyo_get_realpath(&buf, path))
goto out;
+ r.obj = &obj;
if (type == TOMOYO_TYPE_MKDIR)
tomoyo_add_slash(&buf);
r.param_type = TOMOYO_TYPE_PATH_NUMBER_ACL;
int error = 0;
struct tomoyo_path_info buf;
struct tomoyo_request_info r;
+ struct tomoyo_obj_info obj = {
+ .path1 = *path,
+ };
int idx;
- if (!path->mnt)
- return 0;
buf.name = NULL;
r.mode = TOMOYO_CONFIG_DISABLED;
idx = tomoyo_read_lock();
error = -ENOMEM;
goto out;
}
+ r.obj = &obj;
if (acc_mode & MAY_READ)
error = tomoyo_path_permission(&r, TOMOYO_TYPE_READ,
&buf);
*
* @operation: Type of operation.
* @path: Pointer to "struct path".
+ * @target: Symlink's target if @operation is TOMOYO_TYPE_SYMLINK,
+ * NULL otherwise.
*
* Returns 0 on success, negative value otherwise.
*/
-int tomoyo_path_perm(const u8 operation, struct path *path)
+int tomoyo_path_perm(const u8 operation, struct path *path, const char *target)
{
struct tomoyo_request_info r;
+ struct tomoyo_obj_info obj = {
+ .path1 = *path,
+ };
int error;
struct tomoyo_path_info buf;
bool is_enforce;
+ struct tomoyo_path_info symlink_target;
int idx;
- if (!path->mnt)
- return 0;
if (tomoyo_init_request_info(&r, NULL, tomoyo_p2mac[operation])
== TOMOYO_CONFIG_DISABLED)
return 0;
idx = tomoyo_read_lock();
if (!tomoyo_get_realpath(&buf, path))
goto out;
+ r.obj = &obj;
switch (operation) {
case TOMOYO_TYPE_RMDIR:
case TOMOYO_TYPE_CHROOT:
tomoyo_add_slash(&buf);
break;
+ case TOMOYO_TYPE_SYMLINK:
+ symlink_target.name = tomoyo_encode(target);
+ if (!symlink_target.name)
+ goto out;
+ tomoyo_fill_path_info(&symlink_target);
+ obj.symlink_target = &symlink_target;
+ break;
}
error = tomoyo_path_permission(&r, operation, &buf);
+ if (operation == TOMOYO_TYPE_SYMLINK)
+ kfree(symlink_target.name);
out:
kfree(buf.name);
tomoyo_read_unlock(idx);
const unsigned int mode, unsigned int dev)
{
struct tomoyo_request_info r;
+ struct tomoyo_obj_info obj = {
+ .path1 = *path,
+ };
int error = -ENOMEM;
struct tomoyo_path_info buf;
int idx;
- if (!path->mnt ||
- tomoyo_init_request_info(&r, NULL, tomoyo_pnnn2mac[operation])
+ if (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)) {
+ r.obj = &obj;
dev = new_decode_dev(dev);
r.param_type = TOMOYO_TYPE_MKDEV_ACL;
r.param.mkdev.filename = &buf;
struct tomoyo_path_info buf1;
struct tomoyo_path_info buf2;
struct tomoyo_request_info r;
+ struct tomoyo_obj_info obj = {
+ .path1 = *path1,
+ .path2 = *path2,
+ };
int idx;
- if (!path1->mnt || !path2->mnt ||
- tomoyo_init_request_info(&r, NULL, tomoyo_pp2mac[operation])
+ if (tomoyo_init_request_info(&r, NULL, tomoyo_pp2mac[operation])
== TOMOYO_CONFIG_DISABLED)
return 0;
buf1.name = NULL;
switch (operation) {
struct dentry *dentry;
case TOMOYO_TYPE_RENAME:
- case TOMOYO_TYPE_LINK:
+ 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);
+ 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.obj = &obj;
r.param_type = TOMOYO_TYPE_PATH2_ACL;
r.param.path2.operation = operation;
r.param.path2.filename1 = &buf1;
if (perm)
return tomoyo_update_path_acl(perm, param);
for (type = 0; type < TOMOYO_MAX_PATH2_OPERATION; type++)
- if (tomoyo_permstr(operation, tomoyo_path2_keyword[type]))
+ if (tomoyo_permstr(operation,
+ tomoyo_mac_keywords[tomoyo_pp2mac[type]]))
perm |= 1 << type;
if (perm)
return tomoyo_update_path2_acl(perm, param);
for (type = 0; type < TOMOYO_MAX_PATH_NUMBER_OPERATION; type++)
if (tomoyo_permstr(operation,
- tomoyo_path_number_keyword[type]))
+ tomoyo_mac_keywords[tomoyo_pn2mac[type]]))
perm |= 1 << type;
if (perm)
return tomoyo_update_path_number_acl(perm, param);
for (type = 0; type < TOMOYO_MAX_MKDEV_OPERATION; type++)
- if (tomoyo_permstr(operation, tomoyo_mkdev_keyword[type]))
+ if (tomoyo_permstr(operation,
+ tomoyo_mac_keywords[tomoyo_pnnn2mac[type]]))
perm |= 1 << type;
if (perm)
return tomoyo_update_mkdev_acl(perm, param);
- if (tomoyo_permstr(operation, "mount"))
+ if (tomoyo_permstr(operation,
+ tomoyo_mac_keywords[TOMOYO_MAC_FILE_MOUNT]))
return tomoyo_update_mount_acl(param);
return -EINVAL;
}
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