diff options
Diffstat (limited to 'include/linux/lsm_hooks.h')
| -rw-r--r-- | include/linux/lsm_hooks.h | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index 101bf19c0f41..558adfa5c8a8 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -151,6 +151,16 @@ * @name name of the last path component used to create file * @ctx pointer to place the pointer to the resulting context in. * @ctxlen point to place the length of the resulting context. + * @dentry_create_files_as: + * Compute a context for a dentry as the inode is not yet available + * and set that context in passed in creds so that new files are + * created using that context. Context is calculated using the + * passed in creds and not the creds of the caller. + * @dentry dentry to use in calculating the context. + * @mode mode used to determine resource type. + * @name name of the last path component used to create file + * @old creds which should be used for context calculation + * @new creds to modify * * * Security hooks for inode operations. @@ -401,6 +411,23 @@ * @inode contains a pointer to the inode. * @secid contains a pointer to the location where result will be saved. * In case of failure, @secid will be set to zero. + * @inode_copy_up: + * A file is about to be copied up from lower layer to upper layer of + * overlay filesystem. Security module can prepare a set of new creds + * and modify as need be and return new creds. Caller will switch to + * new creds temporarily to create new file and release newly allocated + * creds. + * @src indicates the union dentry of file that is being copied up. + * @new pointer to pointer to return newly allocated creds. + * Returns 0 on success or a negative error code on error. + * @inode_copy_up_xattr: + * Filter the xattrs being copied up when a unioned file is copied + * up from a lower layer to the union/overlay layer. + * @name indicates the name of the xattr. + * Returns 0 to accept the xattr, 1 to discard the xattr, -EOPNOTSUPP if + * security module does not know about attribute or a negative error code + * to abort the copy up. Note that the caller is responsible for reading + * and writing the xattrs as this hook is merely a filter. * * Security hooks for file operations * @@ -1358,6 +1385,10 @@ union security_list_options { int (*dentry_init_security)(struct dentry *dentry, int mode, const struct qstr *name, void **ctx, u32 *ctxlen); + int (*dentry_create_files_as)(struct dentry *dentry, int mode, + struct qstr *name, + const struct cred *old, + struct cred *new); #ifdef CONFIG_SECURITY_PATH @@ -1425,6 +1456,8 @@ union security_list_options { int (*inode_listsecurity)(struct inode *inode, char *buffer, size_t buffer_size); void (*inode_getsecid)(struct inode *inode, u32 *secid); + int (*inode_copy_up)(struct dentry *src, struct cred **new); + int (*inode_copy_up_xattr)(const char *name); int (*file_permission)(struct file *file, int mask); int (*file_alloc_security)(struct file *file); @@ -1455,7 +1488,6 @@ union security_list_options { int (*kernel_act_as)(struct cred *new, u32 secid); int (*kernel_create_files_as)(struct cred *new, struct inode *inode); int (*kernel_module_request)(char *kmod_name); - int (*kernel_module_from_file)(struct file *file); int (*kernel_read_file)(struct file *file, enum kernel_read_file_id id); int (*kernel_post_read_file)(struct file *file, char *buf, loff_t size, enum kernel_read_file_id id); @@ -1656,6 +1688,7 @@ struct security_hook_heads { struct list_head sb_clone_mnt_opts; struct list_head sb_parse_opts_str; struct list_head dentry_init_security; + struct list_head dentry_create_files_as; #ifdef CONFIG_SECURITY_PATH struct list_head path_unlink; struct list_head path_mkdir; @@ -1696,6 +1729,8 @@ struct security_hook_heads { struct list_head inode_setsecurity; struct list_head inode_listsecurity; struct list_head inode_getsecid; + struct list_head inode_copy_up; + struct list_head inode_copy_up_xattr; struct list_head file_permission; struct list_head file_alloc_security; struct list_head file_free_security; |