From: Roberto Sassu <roberto.sassu@xxxxxxxxxx>
Define four return value flags (LSM_RET_NEG, LSM_RET_ZERO, LSM_RET_ONE,
LSM_RET_GT_ONE), one for each interval of interest (<0, 0, 1, >1).
Redefine the LSM_HOOK() macro to add return value flags as argument, and
set the correct flags for each LSM hook.
Implementors of new LSM hooks should do the same as well.
Signed-off-by: Roberto Sassu <roberto.sassu@xxxxxxxxxx>
---
include/linux/bpf_lsm.h | 2 +-
include/linux/lsm_hook_defs.h | 780 ++++++++++++++++++++--------------
include/linux/lsm_hooks.h | 9 +-
kernel/bpf/bpf_lsm.c | 5 +-
security/bpf/hooks.c | 2 +-
security/security.c | 4 +-
6 files changed, 466 insertions(+), 336 deletions(-)
diff --git a/include/linux/bpf_lsm.h b/include/linux/bpf_lsm.h
index 1de7ece5d36d..2f5757085dfd 100644
--- a/include/linux/bpf_lsm.h
+++ b/include/linux/bpf_lsm.h
@@ -13,7 +13,7 @@
#ifdef CONFIG_BPF_LSM
-#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
+#define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) \
RET bpf_lsm_##NAME(__VA_ARGS__);
#include <linux/lsm_hook_defs.h>
#undef LSM_HOOK
diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
index 6abde829b6e5..0b1442b26627 100644
--- a/include/linux/lsm_hook_defs.h
+++ b/include/linux/lsm_hook_defs.h
@@ -18,395 +18,519 @@
* The macro LSM_HOOK is used to define the data structures required by
* the LSM framework using the pattern:
*
- * LSM_HOOK(<return_type>, <default_value>, <hook_name>, args...)
+ * LSM_HOOK(<return_type>, <default_value>, <return_flags>, <hook_name>, args...)
*
* struct security_hook_heads {
- * #define LSM_HOOK(RET, DEFAULT, NAME, ...) struct hlist_head NAME;
+ * #define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) struct hlist_head NAME;
* #include <linux/lsm_hook_defs.h>
* #undef LSM_HOOK
* };
*/
-LSM_HOOK(int, 0, binder_set_context_mgr, const struct cred *mgr)
-LSM_HOOK(int, 0, binder_transaction, const struct cred *from,
- const struct cred *to)
-LSM_HOOK(int, 0, binder_transfer_binder, const struct cred *from,
- const struct cred *to)
-LSM_HOOK(int, 0, binder_transfer_file, const struct cred *from,
- const struct cred *to, struct file *file)
-LSM_HOOK(int, 0, ptrace_access_check, struct task_struct *child,
- unsigned int mode)
-LSM_HOOK(int, 0, ptrace_traceme, struct task_struct *parent)
-LSM_HOOK(int, 0, capget, struct task_struct *target, kernel_cap_t *effective,
- kernel_cap_t *inheritable, kernel_cap_t *permitted)
-LSM_HOOK(int, 0, capset, struct cred *new, const struct cred *old,
- const kernel_cap_t *effective, const kernel_cap_t *inheritable,
- const kernel_cap_t *permitted)
-LSM_HOOK(int, 0, capable, const struct cred *cred, struct user_namespace *ns,
- int cap, unsigned int opts)
-LSM_HOOK(int, 0, quotactl, int cmds, int type, int id, struct super_block *sb)
-LSM_HOOK(int, 0, quota_on, struct dentry *dentry)
-LSM_HOOK(int, 0, syslog, int type)
-LSM_HOOK(int, 0, settime, const struct timespec64 *ts,
- const struct timezone *tz)
-LSM_HOOK(int, 0, vm_enough_memory, struct mm_struct *mm, long pages)
-LSM_HOOK(int, 0, bprm_creds_for_exec, struct linux_binprm *bprm)
-LSM_HOOK(int, 0, bprm_creds_from_file, struct linux_binprm *bprm, struct file *file)
-LSM_HOOK(int, 0, bprm_check_security, struct linux_binprm *bprm)
-LSM_HOOK(void, LSM_RET_VOID, bprm_committing_creds, struct linux_binprm *bprm)
-LSM_HOOK(void, LSM_RET_VOID, bprm_committed_creds, struct linux_binprm *bprm)
-LSM_HOOK(int, 0, fs_context_dup, struct fs_context *fc,
- struct fs_context *src_sc)
-LSM_HOOK(int, -ENOPARAM, fs_context_parse_param, struct fs_context *fc,
- struct fs_parameter *param)
-LSM_HOOK(int, 0, sb_alloc_security, struct super_block *sb)
-LSM_HOOK(void, LSM_RET_VOID, sb_delete, struct super_block *sb)
-LSM_HOOK(void, LSM_RET_VOID, sb_free_security, struct super_block *sb)
-LSM_HOOK(void, LSM_RET_VOID, sb_free_mnt_opts, void *mnt_opts)
-LSM_HOOK(int, 0, sb_eat_lsm_opts, char *orig, void **mnt_opts)
-LSM_HOOK(int, 0, sb_mnt_opts_compat, struct super_block *sb, void *mnt_opts)
-LSM_HOOK(int, 0, sb_remount, struct super_block *sb, void *mnt_opts)
-LSM_HOOK(int, 0, sb_kern_mount, struct super_block *sb)
-LSM_HOOK(int, 0, sb_show_options, struct seq_file *m, struct super_block *sb)
-LSM_HOOK(int, 0, sb_statfs, struct dentry *dentry)
-LSM_HOOK(int, 0, sb_mount, const char *dev_name, const struct path *path,
- const char *type, unsigned long flags, void *data)
-LSM_HOOK(int, 0, sb_umount, struct vfsmount *mnt, int flags)
-LSM_HOOK(int, 0, sb_pivotroot, const struct path *old_path,
- const struct path *new_path)
-LSM_HOOK(int, 0, sb_set_mnt_opts, struct super_block *sb, void *mnt_opts,
- unsigned long kern_flags, unsigned long *set_kern_flags)
-LSM_HOOK(int, 0, sb_clone_mnt_opts, const struct super_block *oldsb,
- struct super_block *newsb, unsigned long kern_flags,
+
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, binder_set_context_mgr,
+ const struct cred *mgr)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, binder_transaction,
+ const struct cred *from, const struct cred *to)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, binder_transfer_binder,
+ const struct cred *from, const struct cred *to)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, binder_transfer_file,
+ const struct cred *from, const struct cred *to, struct file *file)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, ptrace_access_check,
+ struct task_struct *child, unsigned int mode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, ptrace_traceme,
+ struct task_struct *parent)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, capget, struct task_struct *target,
+ kernel_cap_t *effective, kernel_cap_t *inheritable,
+ kernel_cap_t *permitted)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, capset, struct cred *new,
+ const struct cred *old, const kernel_cap_t *effective,
+ const kernel_cap_t *inheritable, const kernel_cap_t *permitted)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, capable, const struct cred *cred,
+ struct user_namespace *ns, int cap, unsigned int opts)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, quotactl, int cmds, int type,
+ int id, struct super_block *sb)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, quota_on, struct dentry *dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, syslog, int type)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, settime,
+ const struct timespec64 *ts, const struct timezone *tz)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE | LSM_RET_GT_ONE,
+ vm_enough_memory, struct mm_struct *mm, long pages)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, bprm_creds_for_exec,
+ struct linux_binprm *bprm)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, bprm_creds_from_file,
+ struct linux_binprm *bprm, struct file *file)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, bprm_check_security,
+ struct linux_binprm *bprm)
+LSM_HOOK(void, LSM_RET_VOID, 0, bprm_committing_creds, struct linux_binprm *bprm)
+LSM_HOOK(void, LSM_RET_VOID, 0, bprm_committed_creds, struct linux_binprm *bprm)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, fs_context_dup,
+ struct fs_context *fc, struct fs_context *src_sc)
+LSM_HOOK(int, -ENOPARAM, LSM_RET_NEG | LSM_RET_ZERO, fs_context_parse_param,
+ struct fs_context *fc, struct fs_parameter *param)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_alloc_security,
+ struct super_block *sb)
+LSM_HOOK(void, LSM_RET_VOID, 0, sb_delete, struct super_block *sb)
+LSM_HOOK(void, LSM_RET_VOID, 0, sb_free_security, struct super_block *sb)
+LSM_HOOK(void, LSM_RET_VOID, 0, sb_free_mnt_opts, void *mnt_opts)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_eat_lsm_opts, char *orig,
+ void **mnt_opts)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_mnt_opts_compat,
+ struct super_block *sb, void *mnt_opts)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_remount, struct super_block *sb,
+ void *mnt_opts)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_kern_mount,
+ struct super_block *sb)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_show_options,
+ struct seq_file *m, struct super_block *sb)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_statfs, struct dentry *dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_mount, const char *dev_name,
+ const struct path *path, const char *type, unsigned long flags,
+ void *data)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_umount, struct vfsmount *mnt,
+ int flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_pivotroot,
+ const struct path *old_path, const struct path *new_path)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_set_mnt_opts,
+ struct super_block *sb, void *mnt_opts, unsigned long kern_flags,
unsigned long *set_kern_flags)
-LSM_HOOK(int, 0, move_mount, const struct path *from_path,
- const struct path *to_path)
-LSM_HOOK(int, -EOPNOTSUPP, dentry_init_security, struct dentry *dentry,
- int mode, const struct qstr *name, const char **xattr_name,
- void **ctx, u32 *ctxlen)
-LSM_HOOK(int, 0, dentry_create_files_as, struct dentry *dentry, int mode,
- struct qstr *name, const struct cred *old, struct cred *new)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sb_clone_mnt_opts,
+ const struct super_block *oldsb, struct super_block *newsb,
+ unsigned long kern_flags, unsigned long *set_kern_flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, move_mount,
+ const struct path *from_path, const struct path *to_path)
+LSM_HOOK(int, -EOPNOTSUPP, LSM_RET_NEG | LSM_RET_ZERO, dentry_init_security,
+ struct dentry *dentry, int mode, const struct qstr *name,
+ const char **xattr_name, void **ctx, u32 *ctxlen)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, dentry_create_files_as,
+ struct dentry *dentry, int mode, struct qstr *name,
+ const struct cred *old, struct cred *new)
#ifdef CONFIG_SECURITY_PATH
-LSM_HOOK(int, 0, path_unlink, const struct path *dir, struct dentry *dentry)
-LSM_HOOK(int, 0, path_mkdir, const struct path *dir, struct dentry *dentry,
- umode_t mode)
-LSM_HOOK(int, 0, path_rmdir, const struct path *dir, struct dentry *dentry)
-LSM_HOOK(int, 0, path_mknod, const struct path *dir, struct dentry *dentry,
- umode_t mode, unsigned int dev)
-LSM_HOOK(int, 0, path_truncate, const struct path *path)
-LSM_HOOK(int, 0, path_symlink, const struct path *dir, struct dentry *dentry,
- const char *old_name)
-LSM_HOOK(int, 0, path_link, struct dentry *old_dentry,
- const struct path *new_dir, struct dentry *new_dentry)
-LSM_HOOK(int, 0, path_rename, const struct path *old_dir,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_unlink,
+ const struct path *dir, struct dentry *dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_mkdir, const struct path *dir,
+ struct dentry *dentry, umode_t mode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_rmdir, const struct path *dir,
+ struct dentry *dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_mknod, const struct path *dir,
+ struct dentry *dentry, umode_t mode, unsigned int dev)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_truncate,
+ const struct path *path)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_symlink,
+ const struct path *dir, struct dentry *dentry, const char *old_name)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_link,
struct dentry *old_dentry, const struct path *new_dir,
- struct dentry *new_dentry, unsigned int flags)
-LSM_HOOK(int, 0, path_chmod, const struct path *path, umode_t mode)
-LSM_HOOK(int, 0, path_chown, const struct path *path, kuid_t uid, kgid_t gid)
-LSM_HOOK(int, 0, path_chroot, const struct path *path)
+ struct dentry *new_dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_rename,
+ const struct path *old_dir, struct dentry *old_dentry,
+ const struct path *new_dir, struct dentry *new_dentry,
+ unsigned int flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_chmod,
+ const struct path *path, umode_t mode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_chown,
+ const struct path *path, kuid_t uid, kgid_t gid)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_chroot,
+ const struct path *path)
#endif /* CONFIG_SECURITY_PATH */
/* Needed for inode based security check */
-LSM_HOOK(int, 0, path_notify, const struct path *path, u64 mask,
- unsigned int obj_type)
-LSM_HOOK(int, 0, inode_alloc_security, struct inode *inode)
-LSM_HOOK(void, LSM_RET_VOID, inode_free_security, struct inode *inode)
-LSM_HOOK(int, 0, inode_init_security, struct inode *inode,
- struct inode *dir, const struct qstr *qstr, const char **name,
- void **value, size_t *len)
-LSM_HOOK(int, 0, inode_init_security_anon, struct inode *inode,
- const struct qstr *name, const struct inode *context_inode)
-LSM_HOOK(int, 0, inode_create, struct inode *dir, struct dentry *dentry,
- umode_t mode)
-LSM_HOOK(int, 0, inode_link, struct dentry *old_dentry, struct inode *dir,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, path_notify,
+ const struct path *path, u64 mask, unsigned int obj_type)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_alloc_security,
+ struct inode *inode)
+LSM_HOOK(void, LSM_RET_VOID, 0, inode_free_security, struct inode *inode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_init_security,
+ struct inode *inode, struct inode *dir, const struct qstr *qstr,
+ const char **name, void **value, size_t *len)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_init_security_anon,
+ struct inode *inode, const struct qstr *name,
+ const struct inode *context_inode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_create, struct inode *dir,
+ struct dentry *dentry, umode_t mode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_link,
+ struct dentry *old_dentry, struct inode *dir,
struct dentry *new_dentry)
-LSM_HOOK(int, 0, inode_unlink, struct inode *dir, struct dentry *dentry)
-LSM_HOOK(int, 0, inode_symlink, struct inode *dir, struct dentry *dentry,
- const char *old_name)
-LSM_HOOK(int, 0, inode_mkdir, struct inode *dir, struct dentry *dentry,
- umode_t mode)
-LSM_HOOK(int, 0, inode_rmdir, struct inode *dir, struct dentry *dentry)
-LSM_HOOK(int, 0, inode_mknod, struct inode *dir, struct dentry *dentry,
- umode_t mode, dev_t dev)
-LSM_HOOK(int, 0, inode_rename, struct inode *old_dir, struct dentry *old_dentry,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_unlink, struct inode *dir,
+ struct dentry *dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_symlink, struct inode *dir,
+ struct dentry *dentry, const char *old_name)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_mkdir, struct inode *dir,
+ struct dentry *dentry, umode_t mode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_rmdir, struct inode *dir,
+ struct dentry *dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_mknod, struct inode *dir,
+ struct dentry *dentry, umode_t mode, dev_t dev)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_rename,
+ struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
-LSM_HOOK(int, 0, inode_readlink, struct dentry *dentry)
-LSM_HOOK(int, 0, inode_follow_link, struct dentry *dentry, struct inode *inode,
- bool rcu)
-LSM_HOOK(int, 0, inode_permission, struct inode *inode, int mask)
-LSM_HOOK(int, 0, inode_setattr, struct dentry *dentry, struct iattr *attr)
-LSM_HOOK(int, 0, inode_getattr, const struct path *path)
-LSM_HOOK(int, 0, inode_setxattr, struct user_namespace *mnt_userns,
- struct dentry *dentry, const char *name, const void *value,
- size_t size, int flags)
-LSM_HOOK(void, LSM_RET_VOID, inode_post_setxattr, struct dentry *dentry,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_readlink,
+ struct dentry *dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_follow_link,
+ struct dentry *dentry, struct inode *inode, bool rcu)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_permission,
+ struct inode *inode, int mask)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_setattr,
+ struct dentry *dentry, struct iattr *attr)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_getattr,
+ const struct path *path)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_setxattr,
+ struct user_namespace *mnt_userns, struct dentry *dentry,
+ const char *name, const void *value, size_t size, int flags)
+LSM_HOOK(void, LSM_RET_VOID, 0, inode_post_setxattr, struct dentry *dentry,
const char *name, const void *value, size_t size, int flags)
-LSM_HOOK(int, 0, inode_getxattr, struct dentry *dentry, const char *name)
-LSM_HOOK(int, 0, inode_listxattr, struct dentry *dentry)
-LSM_HOOK(int, 0, inode_removexattr, struct user_namespace *mnt_userns,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_getxattr,
struct dentry *dentry, const char *name)
-LSM_HOOK(int, 0, inode_need_killpriv, struct dentry *dentry)
-LSM_HOOK(int, 0, inode_killpriv, struct user_namespace *mnt_userns,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_listxattr,
struct dentry *dentry)
-LSM_HOOK(int, -EOPNOTSUPP, inode_getsecurity, struct user_namespace *mnt_userns,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_removexattr,
+ struct user_namespace *mnt_userns, struct dentry *dentry,
+ const char *name)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE | LSM_RET_GT_ONE,
+ inode_need_killpriv, struct dentry *dentry)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_killpriv,
+ struct user_namespace *mnt_userns, struct dentry *dentry)
+LSM_HOOK(int, -EOPNOTSUPP,
+ LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE | LSM_RET_GT_ONE,
+ inode_getsecurity, struct user_namespace *mnt_userns,
struct inode *inode, const char *name, void **buffer, bool alloc)
-LSM_HOOK(int, -EOPNOTSUPP, inode_setsecurity, struct inode *inode,
- const char *name, const void *value, size_t size, int flags)
-LSM_HOOK(int, 0, inode_listsecurity, struct inode *inode, char *buffer,
+LSM_HOOK(int, -EOPNOTSUPP, LSM_RET_NEG | LSM_RET_ZERO, inode_setsecurity,
+ struct inode *inode, const char *name, const void *value, size_t size,
+ int flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE | LSM_RET_GT_ONE,
+ inode_listsecurity, struct inode *inode, char *buffer,
size_t buffer_size)
-LSM_HOOK(void, LSM_RET_VOID, inode_getsecid, struct inode *inode, u32 *secid)
-LSM_HOOK(int, 0, inode_copy_up, struct dentry *src, struct cred **new)
-LSM_HOOK(int, -EOPNOTSUPP, inode_copy_up_xattr, const char *name)
-LSM_HOOK(int, 0, kernfs_init_security, struct kernfs_node *kn_dir,
- struct kernfs_node *kn)
-LSM_HOOK(int, 0, file_permission, struct file *file, int mask)
-LSM_HOOK(int, 0, file_alloc_security, struct file *file)
-LSM_HOOK(void, LSM_RET_VOID, file_free_security, struct file *file)
-LSM_HOOK(int, 0, file_ioctl, struct file *file, unsigned int cmd,
- unsigned long arg)
-LSM_HOOK(int, 0, mmap_addr, unsigned long addr)
-LSM_HOOK(int, 0, mmap_file, struct file *file, unsigned long reqprot,
- unsigned long prot, unsigned long flags)
-LSM_HOOK(int, 0, file_mprotect, struct vm_area_struct *vma,
- unsigned long reqprot, unsigned long prot)
-LSM_HOOK(int, 0, file_lock, struct file *file, unsigned int cmd)
-LSM_HOOK(int, 0, file_fcntl, struct file *file, unsigned int cmd,
- unsigned long arg)
-LSM_HOOK(void, LSM_RET_VOID, file_set_fowner, struct file *file)
-LSM_HOOK(int, 0, file_send_sigiotask, struct task_struct *tsk,
- struct fown_struct *fown, int sig)
-LSM_HOOK(int, 0, file_receive, struct file *file)
-LSM_HOOK(int, 0, file_open, struct file *file)
-LSM_HOOK(int, 0, task_alloc, struct task_struct *task,
- unsigned long clone_flags)
-LSM_HOOK(void, LSM_RET_VOID, task_free, struct task_struct *task)
-LSM_HOOK(int, 0, cred_alloc_blank, struct cred *cred, gfp_t gfp)
-LSM_HOOK(void, LSM_RET_VOID, cred_free, struct cred *cred)
-LSM_HOOK(int, 0, cred_prepare, struct cred *new, const struct cred *old,
- gfp_t gfp)
-LSM_HOOK(void, LSM_RET_VOID, cred_transfer, struct cred *new,
+LSM_HOOK(void, LSM_RET_VOID, 0, inode_getsecid, struct inode *inode, u32 *secid)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_copy_up, struct dentry *src,
+ struct cred **new)
+LSM_HOOK(int, -EOPNOTSUPP, LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE,
+ inode_copy_up_xattr, const char *name)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, kernfs_init_security,
+ struct kernfs_node *kn_dir, struct kernfs_node *kn)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_permission, struct file *file,
+ int mask)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_alloc_security,
+ struct file *file)
+LSM_HOOK(void, LSM_RET_VOID, 0, file_free_security, struct file *file)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_ioctl, struct file *file,
+ unsigned int cmd, unsigned long arg)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, mmap_addr, unsigned long addr)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, mmap_file, struct file *file,
+ unsigned long reqprot, unsigned long prot, unsigned long flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_mprotect,
+ struct vm_area_struct *vma, unsigned long reqprot, unsigned long prot)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_lock, struct file *file,
+ unsigned int cmd)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_fcntl, struct file *file,
+ unsigned int cmd, unsigned long arg)
+LSM_HOOK(void, LSM_RET_VOID, 0, file_set_fowner, struct file *file)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_send_sigiotask,
+ struct task_struct *tsk, struct fown_struct *fown, int sig)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_receive, struct file *file)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, file_open, struct file *file)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_alloc,
+ struct task_struct *task, unsigned long clone_flags)
+LSM_HOOK(void, LSM_RET_VOID, 0, task_free, struct task_struct *task)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, cred_alloc_blank,
+ struct cred *cred, gfp_t gfp)
+LSM_HOOK(void, LSM_RET_VOID, 0, cred_free, struct cred *cred)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, cred_prepare, struct cred *new,
+ const struct cred *old, gfp_t gfp)
+LSM_HOOK(void, LSM_RET_VOID, 0, cred_transfer, struct cred *new,
const struct cred *old)
-LSM_HOOK(void, LSM_RET_VOID, cred_getsecid, const struct cred *c, u32 *secid)
-LSM_HOOK(int, 0, kernel_act_as, struct cred *new, u32 secid)
-LSM_HOOK(int, 0, kernel_create_files_as, struct cred *new, struct inode *inode)
-LSM_HOOK(int, 0, kernel_module_request, char *kmod_name)
-LSM_HOOK(int, 0, kernel_load_data, enum kernel_load_data_id id, bool contents)
-LSM_HOOK(int, 0, kernel_post_load_data, char *buf, loff_t size,
- enum kernel_load_data_id id, char *description)
-LSM_HOOK(int, 0, kernel_read_file, struct file *file,
- enum kernel_read_file_id id, bool contents)
-LSM_HOOK(int, 0, kernel_post_read_file, struct file *file, char *buf,
- loff_t size, enum kernel_read_file_id id)
-LSM_HOOK(int, 0, task_fix_setuid, struct cred *new, const struct cred *old,
- int flags)
-LSM_HOOK(int, 0, task_fix_setgid, struct cred *new, const struct cred * old,
- int flags)
-LSM_HOOK(int, 0, task_fix_setgroups, struct cred *new, const struct cred * old)
-LSM_HOOK(int, 0, task_setpgid, struct task_struct *p, pid_t pgid)
-LSM_HOOK(int, 0, task_getpgid, struct task_struct *p)
-LSM_HOOK(int, 0, task_getsid, struct task_struct *p)
-LSM_HOOK(void, LSM_RET_VOID, current_getsecid_subj, u32 *secid)
-LSM_HOOK(void, LSM_RET_VOID, task_getsecid_obj,
+LSM_HOOK(void, LSM_RET_VOID, 0, cred_getsecid, const struct cred *c, u32 *secid)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, kernel_act_as, struct cred *new,
+ u32 secid)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, kernel_create_files_as,
+ struct cred *new, struct inode *inode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, kernel_module_request,
+ char *kmod_name)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, kernel_load_data,
+ enum kernel_load_data_id id, bool contents)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, kernel_post_load_data, char *buf,
+ loff_t size, enum kernel_load_data_id id, char *description)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, kernel_read_file,
+ struct file *file, enum kernel_read_file_id id, bool contents)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, kernel_post_read_file,
+ struct file *file, char *buf, loff_t size, enum kernel_read_file_id id)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_fix_setuid, struct cred *new,
+ const struct cred *old, int flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_fix_setgid, struct cred *new,
+ const struct cred *old, int flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_fix_setgroups,
+ struct cred *new, const struct cred *old)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_setpgid,
+ struct task_struct *p, pid_t pgid)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_getpgid,
+ struct task_struct *p)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_getsid, struct task_struct *p)
+LSM_HOOK(void, LSM_RET_VOID, 0, current_getsecid_subj, u32 *secid)
+LSM_HOOK(void, LSM_RET_VOID, 0, task_getsecid_obj,
struct task_struct *p, u32 *secid)
-LSM_HOOK(int, 0, task_setnice, struct task_struct *p, int nice)
-LSM_HOOK(int, 0, task_setioprio, struct task_struct *p, int ioprio)
-LSM_HOOK(int, 0, task_getioprio, struct task_struct *p)
-LSM_HOOK(int, 0, task_prlimit, const struct cred *cred,
- const struct cred *tcred, unsigned int flags)
-LSM_HOOK(int, 0, task_setrlimit, struct task_struct *p, unsigned int resource,
- struct rlimit *new_rlim)
-LSM_HOOK(int, 0, task_setscheduler, struct task_struct *p)
-LSM_HOOK(int, 0, task_getscheduler, struct task_struct *p)
-LSM_HOOK(int, 0, task_movememory, struct task_struct *p)
-LSM_HOOK(int, 0, task_kill, struct task_struct *p, struct kernel_siginfo *info,
- int sig, const struct cred *cred)
-LSM_HOOK(int, -ENOSYS, task_prctl, int option, unsigned long arg2,
- unsigned long arg3, unsigned long arg4, unsigned long arg5)
-LSM_HOOK(void, LSM_RET_VOID, task_to_inode, struct task_struct *p,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_setnice,
+ struct task_struct *p, int nice)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_setioprio,
+ struct task_struct *p, int ioprio)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_getioprio,
+ struct task_struct *p)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_prlimit,
+ const struct cred *cred, const struct cred *tcred, unsigned int flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_setrlimit,
+ struct task_struct *p, unsigned int resource, struct rlimit *new_rlim)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_setscheduler,
+ struct task_struct *p)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_getscheduler,
+ struct task_struct *p)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_movememory,
+ struct task_struct *p)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, task_kill, struct task_struct *p,
+ struct kernel_siginfo *info, int sig, const struct cred *cred)
+LSM_HOOK(int, -ENOSYS,
+ LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE | LSM_RET_GT_ONE, task_prctl,
+ int option, unsigned long arg2, unsigned long arg3, unsigned long arg4,
+ unsigned long arg5)
+LSM_HOOK(void, LSM_RET_VOID, 0, task_to_inode, struct task_struct *p,
struct inode *inode)
-LSM_HOOK(int, 0, userns_create, const struct cred *cred)
-LSM_HOOK(int, 0, ipc_permission, struct kern_ipc_perm *ipcp, short flag)
-LSM_HOOK(void, LSM_RET_VOID, ipc_getsecid, struct kern_ipc_perm *ipcp,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, userns_create,
+ const struct cred *cred)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, ipc_permission,
+ struct kern_ipc_perm *ipcp, short flag)
+LSM_HOOK(void, LSM_RET_VOID, 0, ipc_getsecid, struct kern_ipc_perm *ipcp,
u32 *secid)
-LSM_HOOK(int, 0, msg_msg_alloc_security, struct msg_msg *msg)
-LSM_HOOK(void, LSM_RET_VOID, msg_msg_free_security, struct msg_msg *msg)
-LSM_HOOK(int, 0, msg_queue_alloc_security, struct kern_ipc_perm *perm)
-LSM_HOOK(void, LSM_RET_VOID, msg_queue_free_security,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, msg_msg_alloc_security,
+ struct msg_msg *msg)
+LSM_HOOK(void, LSM_RET_VOID, 0, msg_msg_free_security, struct msg_msg *msg)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, msg_queue_alloc_security,
+ struct kern_ipc_perm *perm)
+LSM_HOOK(void, LSM_RET_VOID, 0, msg_queue_free_security,
+ struct kern_ipc_perm *perm)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, msg_queue_associate,
+ struct kern_ipc_perm *perm, int msqflg)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, msg_queue_msgctl,
+ struct kern_ipc_perm *perm, int cmd)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, msg_queue_msgsnd,
+ struct kern_ipc_perm *perm, struct msg_msg *msg, int msqflg)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, msg_queue_msgrcv,
+ struct kern_ipc_perm *perm, struct msg_msg *msg,
+ struct task_struct *target, long type, int mode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, shm_alloc_security,
struct kern_ipc_perm *perm)
-LSM_HOOK(int, 0, msg_queue_associate, struct kern_ipc_perm *perm, int msqflg)
-LSM_HOOK(int, 0, msg_queue_msgctl, struct kern_ipc_perm *perm, int cmd)
-LSM_HOOK(int, 0, msg_queue_msgsnd, struct kern_ipc_perm *perm,
- struct msg_msg *msg, int msqflg)
-LSM_HOOK(int, 0, msg_queue_msgrcv, struct kern_ipc_perm *perm,
- struct msg_msg *msg, struct task_struct *target, long type, int mode)
-LSM_HOOK(int, 0, shm_alloc_security, struct kern_ipc_perm *perm)
-LSM_HOOK(void, LSM_RET_VOID, shm_free_security, struct kern_ipc_perm *perm)
-LSM_HOOK(int, 0, shm_associate, struct kern_ipc_perm *perm, int shmflg)
-LSM_HOOK(int, 0, shm_shmctl, struct kern_ipc_perm *perm, int cmd)
-LSM_HOOK(int, 0, shm_shmat, struct kern_ipc_perm *perm, char __user *shmaddr,
- int shmflg)
-LSM_HOOK(int, 0, sem_alloc_security, struct kern_ipc_perm *perm)
-LSM_HOOK(void, LSM_RET_VOID, sem_free_security, struct kern_ipc_perm *perm)
-LSM_HOOK(int, 0, sem_associate, struct kern_ipc_perm *perm, int semflg)
-LSM_HOOK(int, 0, sem_semctl, struct kern_ipc_perm *perm, int cmd)
-LSM_HOOK(int, 0, sem_semop, struct kern_ipc_perm *perm, struct sembuf *sops,
- unsigned nsops, int alter)
-LSM_HOOK(int, 0, netlink_send, struct sock *sk, struct sk_buff *skb)
-LSM_HOOK(void, LSM_RET_VOID, d_instantiate, struct dentry *dentry,
+LSM_HOOK(void, LSM_RET_VOID, 0, shm_free_security, struct kern_ipc_perm *perm)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, shm_associate,
+ struct kern_ipc_perm *perm, int shmflg)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, shm_shmctl,
+ struct kern_ipc_perm *perm, int cmd)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, shm_shmat,
+ struct kern_ipc_perm *perm, char __user *shmaddr, int shmflg)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sem_alloc_security,
+ struct kern_ipc_perm *perm)
+LSM_HOOK(void, LSM_RET_VOID, 0, sem_free_security, struct kern_ipc_perm *perm)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sem_associate,
+ struct kern_ipc_perm *perm, int semflg)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sem_semctl,
+ struct kern_ipc_perm *perm, int cmd)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sem_semop,
+ struct kern_ipc_perm *perm, struct sembuf *sops, unsigned nsops,
+ int alter)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, netlink_send, struct sock *sk,
+ struct sk_buff *skb)
+LSM_HOOK(void, LSM_RET_VOID, 0, d_instantiate, struct dentry *dentry,
struct inode *inode)
-LSM_HOOK(int, -EINVAL, getprocattr, struct task_struct *p, const char *name,
- char **value)
-LSM_HOOK(int, -EINVAL, setprocattr, const char *name, void *value, size_t size)
-LSM_HOOK(int, 0, ismaclabel, const char *name)
-LSM_HOOK(int, -EOPNOTSUPP, secid_to_secctx, u32 secid, char **secdata,
- u32 *seclen)
-LSM_HOOK(int, 0, secctx_to_secid, const char *secdata, u32 seclen, u32 *secid)
-LSM_HOOK(void, LSM_RET_VOID, release_secctx, char *secdata, u32 seclen)
-LSM_HOOK(void, LSM_RET_VOID, inode_invalidate_secctx, struct inode *inode)
-LSM_HOOK(int, 0, inode_notifysecctx, struct inode *inode, void *ctx, u32 ctxlen)
-LSM_HOOK(int, 0, inode_setsecctx, struct dentry *dentry, void *ctx, u32 ctxlen)
-LSM_HOOK(int, 0, inode_getsecctx, struct inode *inode, void **ctx,
- u32 *ctxlen)
+LSM_HOOK(int, -EINVAL,
+ LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE | LSM_RET_GT_ONE, getprocattr,
+ struct task_struct *p, const char *name, char **value)
+LSM_HOOK(int, -EINVAL,
+ LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE | LSM_RET_GT_ONE, setprocattr,
+ const char *name, void *value, size_t size)
+LSM_HOOK(int, 0, LSM_RET_ZERO | LSM_RET_ONE, ismaclabel, const char *name)
+LSM_HOOK(int, -EOPNOTSUPP, LSM_RET_NEG | LSM_RET_ZERO, secid_to_secctx,
+ u32 secid, char **secdata, u32 *seclen)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, secctx_to_secid,
+ const char *secdata, u32 seclen, u32 *secid)
+LSM_HOOK(void, LSM_RET_VOID, 0, release_secctx, char *secdata, u32 seclen)
+LSM_HOOK(void, LSM_RET_VOID, 0, inode_invalidate_secctx, struct inode *inode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_notifysecctx,
+ struct inode *inode, void *ctx, u32 ctxlen)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_setsecctx,
+ struct dentry *dentry, void *ctx, u32 ctxlen)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inode_getsecctx,
+ struct inode *inode, void **ctx, u32 *ctxlen)
#if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE)
-LSM_HOOK(int, 0, post_notification, const struct cred *w_cred,
- const struct cred *cred, struct watch_notification *n)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, post_notification,
+ const struct cred *w_cred, const struct cred *cred,
+ struct watch_notification *n)
#endif /* CONFIG_SECURITY && CONFIG_WATCH_QUEUE */
#if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS)
-LSM_HOOK(int, 0, watch_key, struct key *key)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, watch_key, struct key *key)
#endif /* CONFIG_SECURITY && CONFIG_KEY_NOTIFICATIONS */
#ifdef CONFIG_SECURITY_NETWORK
-LSM_HOOK(int, 0, unix_stream_connect, struct sock *sock, struct sock *other,
- struct sock *newsk)
-LSM_HOOK(int, 0, unix_may_send, struct socket *sock, struct socket *other)
-LSM_HOOK(int, 0, socket_create, int family, int type, int protocol, int kern)
-LSM_HOOK(int, 0, socket_post_create, struct socket *sock, int family, int type,
- int protocol, int kern)
-LSM_HOOK(int, 0, socket_socketpair, struct socket *socka, struct socket *sockb)
-LSM_HOOK(int, 0, socket_bind, struct socket *sock, struct sockaddr *address,
- int addrlen)
-LSM_HOOK(int, 0, socket_connect, struct socket *sock, struct sockaddr *address,
- int addrlen)
-LSM_HOOK(int, 0, socket_listen, struct socket *sock, int backlog)
-LSM_HOOK(int, 0, socket_accept, struct socket *sock, struct socket *newsock)
-LSM_HOOK(int, 0, socket_sendmsg, struct socket *sock, struct msghdr *msg,
- int size)
-LSM_HOOK(int, 0, socket_recvmsg, struct socket *sock, struct msghdr *msg,
- int size, int flags)
-LSM_HOOK(int, 0, socket_getsockname, struct socket *sock)
-LSM_HOOK(int, 0, socket_getpeername, struct socket *sock)
-LSM_HOOK(int, 0, socket_getsockopt, struct socket *sock, int level, int optname)
-LSM_HOOK(int, 0, socket_setsockopt, struct socket *sock, int level, int optname)
-LSM_HOOK(int, 0, socket_shutdown, struct socket *sock, int how)
-LSM_HOOK(int, 0, socket_sock_rcv_skb, struct sock *sk, struct sk_buff *skb)
-LSM_HOOK(int, 0, socket_getpeersec_stream, struct socket *sock,
- sockptr_t optval, sockptr_t optlen, unsigned int len)
-LSM_HOOK(int, 0, socket_getpeersec_dgram, struct socket *sock,
- struct sk_buff *skb, u32 *secid)
-LSM_HOOK(int, 0, sk_alloc_security, struct sock *sk, int family, gfp_t priority)
-LSM_HOOK(void, LSM_RET_VOID, sk_free_security, struct sock *sk)
-LSM_HOOK(void, LSM_RET_VOID, sk_clone_security, const struct sock *sk,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, unix_stream_connect,
+ struct sock *sock, struct sock *other, struct sock *newsk)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, unix_may_send, struct socket *sock,
+ struct socket *other)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_create, int family,
+ int type, int protocol, int kern)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_post_create,
+ struct socket *sock, int family, int type, int protocol, int kern)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_socketpair,
+ struct socket *socka, struct socket *sockb)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_bind, struct socket *sock,
+ struct sockaddr *address, int addrlen)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_connect,
+ struct socket *sock, struct sockaddr *address, int addrlen)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_listen, struct socket *sock,
+ int backlog)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_accept, struct socket *sock,
+ struct socket *newsock)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_sendmsg,
+ struct socket *sock, struct msghdr *msg, int size)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_recvmsg,
+ struct socket *sock, struct msghdr *msg, int size, int flags)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_getsockname,
+ struct socket *sock)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_getpeername,
+ struct socket *sock)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_getsockopt,
+ struct socket *sock, int level, int optname)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_setsockopt,
+ struct socket *sock, int level, int optname)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_shutdown,
+ struct socket *sock, int how)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_sock_rcv_skb,
+ struct sock *sk, struct sk_buff *skb)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_getpeersec_stream,
+ struct socket *sock, sockptr_t optval, sockptr_t optlen,
+ unsigned int len)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, socket_getpeersec_dgram,
+ struct socket *sock, struct sk_buff *skb, u32 *secid)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sk_alloc_security, struct sock *sk,
+ int family, gfp_t priority)
+LSM_HOOK(void, LSM_RET_VOID, 0, sk_free_security, struct sock *sk)
+LSM_HOOK(void, LSM_RET_VOID, 0, sk_clone_security, const struct sock *sk,
struct sock *newsk)
-LSM_HOOK(void, LSM_RET_VOID, sk_getsecid, struct sock *sk, u32 *secid)
-LSM_HOOK(void, LSM_RET_VOID, sock_graft, struct sock *sk, struct socket *parent)
-LSM_HOOK(int, 0, inet_conn_request, const struct sock *sk, struct sk_buff *skb,
- struct request_sock *req)
-LSM_HOOK(void, LSM_RET_VOID, inet_csk_clone, struct sock *newsk,
+LSM_HOOK(void, LSM_RET_VOID, 0, sk_getsecid, struct sock *sk, u32 *secid)
+LSM_HOOK(void, LSM_RET_VOID, 0, sock_graft, struct sock *sk, struct socket *parent)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, inet_conn_request,
+ const struct sock *sk, struct sk_buff *skb, struct request_sock *req)
+LSM_HOOK(void, LSM_RET_VOID, 0, inet_csk_clone, struct sock *newsk,
const struct request_sock *req)
-LSM_HOOK(void, LSM_RET_VOID, inet_conn_established, struct sock *sk,
+LSM_HOOK(void, LSM_RET_VOID, 0, inet_conn_established, struct sock *sk,
struct sk_buff *skb)
-LSM_HOOK(int, 0, secmark_relabel_packet, u32 secid)
-LSM_HOOK(void, LSM_RET_VOID, secmark_refcount_inc, void)
-LSM_HOOK(void, LSM_RET_VOID, secmark_refcount_dec, void)
-LSM_HOOK(void, LSM_RET_VOID, req_classify_flow, const struct request_sock *req,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, secmark_relabel_packet, u32 secid)
+LSM_HOOK(void, LSM_RET_VOID, 0, secmark_refcount_inc, void)
+LSM_HOOK(void, LSM_RET_VOID, 0, secmark_refcount_dec, void)
+LSM_HOOK(void, LSM_RET_VOID, 0, req_classify_flow, const struct request_sock *req,
struct flowi_common *flic)
-LSM_HOOK(int, 0, tun_dev_alloc_security, void **security)
-LSM_HOOK(void, LSM_RET_VOID, tun_dev_free_security, void *security)
-LSM_HOOK(int, 0, tun_dev_create, void)
-LSM_HOOK(int, 0, tun_dev_attach_queue, void *security)
-LSM_HOOK(int, 0, tun_dev_attach, struct sock *sk, void *security)
-LSM_HOOK(int, 0, tun_dev_open, void *security)
-LSM_HOOK(int, 0, sctp_assoc_request, struct sctp_association *asoc,
- struct sk_buff *skb)
-LSM_HOOK(int, 0, sctp_bind_connect, struct sock *sk, int optname,
- struct sockaddr *address, int addrlen)
-LSM_HOOK(void, LSM_RET_VOID, sctp_sk_clone, struct sctp_association *asoc,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, tun_dev_alloc_security,
+ void **security)
+LSM_HOOK(void, LSM_RET_VOID, 0, tun_dev_free_security, void *security)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, tun_dev_create, void)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, tun_dev_attach_queue,
+ void *security)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, tun_dev_attach, struct sock *sk,
+ void *security)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, tun_dev_open, void *security)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sctp_assoc_request,
+ struct sctp_association *asoc, struct sk_buff *skb)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sctp_bind_connect, struct sock *sk,
+ int optname, struct sockaddr *address, int addrlen)
+LSM_HOOK(void, LSM_RET_VOID, 0, sctp_sk_clone, struct sctp_association *asoc,
struct sock *sk, struct sock *newsk)
-LSM_HOOK(int, 0, sctp_assoc_established, struct sctp_association *asoc,
- struct sk_buff *skb)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, sctp_assoc_established,
+ struct sctp_association *asoc, struct sk_buff *skb)
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_INFINIBAND
-LSM_HOOK(int, 0, ib_pkey_access, void *sec, u64 subnet_prefix, u16 pkey)
-LSM_HOOK(int, 0, ib_endport_manage_subnet, void *sec, const char *dev_name,
- u8 port_num)
-LSM_HOOK(int, 0, ib_alloc_security, void **sec)
-LSM_HOOK(void, LSM_RET_VOID, ib_free_security, void *sec)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, ib_pkey_access, void *sec,
+ u64 subnet_prefix, u16 pkey)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, ib_endport_manage_subnet,
+ void *sec, const char *dev_name, u8 port_num)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, ib_alloc_security, void **sec)
+LSM_HOOK(void, LSM_RET_VOID, 0, ib_free_security, void *sec)
#endif /* CONFIG_SECURITY_INFINIBAND */
#ifdef CONFIG_SECURITY_NETWORK_XFRM
-LSM_HOOK(int, 0, xfrm_policy_alloc_security, struct xfrm_sec_ctx **ctxp,
- struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp)
-LSM_HOOK(int, 0, xfrm_policy_clone_security, struct xfrm_sec_ctx *old_ctx,
- struct xfrm_sec_ctx **new_ctx)
-LSM_HOOK(void, LSM_RET_VOID, xfrm_policy_free_security,
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, xfrm_policy_alloc_security,
+ struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx,
+ gfp_t gfp)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, xfrm_policy_clone_security,
+ struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx)
+LSM_HOOK(void, LSM_RET_VOID, 0, xfrm_policy_free_security,
+ struct xfrm_sec_ctx *ctx)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, xfrm_policy_delete_security,
struct xfrm_sec_ctx *ctx)
-LSM_HOOK(int, 0, xfrm_policy_delete_security, struct xfrm_sec_ctx *ctx)
-LSM_HOOK(int, 0, xfrm_state_alloc, struct xfrm_state *x,
- struct xfrm_user_sec_ctx *sec_ctx)
-LSM_HOOK(int, 0, xfrm_state_alloc_acquire, struct xfrm_state *x,
- struct xfrm_sec_ctx *polsec, u32 secid)
-LSM_HOOK(void, LSM_RET_VOID, xfrm_state_free_security, struct xfrm_state *x)
-LSM_HOOK(int, 0, xfrm_state_delete_security, struct xfrm_state *x)
-LSM_HOOK(int, 0, xfrm_policy_lookup, struct xfrm_sec_ctx *ctx, u32 fl_secid)
-LSM_HOOK(int, 1, xfrm_state_pol_flow_match, struct xfrm_state *x,
- struct xfrm_policy *xp, const struct flowi_common *flic)
-LSM_HOOK(int, 0, xfrm_decode_session, struct sk_buff *skb, u32 *secid,
- int ckall)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, xfrm_state_alloc,
+ struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, xfrm_state_alloc_acquire,
+ struct xfrm_state *x, struct xfrm_sec_ctx *polsec, u32 secid)
+LSM_HOOK(void, LSM_RET_VOID, 0, xfrm_state_free_security, struct xfrm_state *x)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, xfrm_state_delete_security,
+ struct xfrm_state *x)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, xfrm_policy_lookup,
+ struct xfrm_sec_ctx *ctx, u32 fl_secid)
+LSM_HOOK(int, 1, LSM_RET_ZERO | LSM_RET_ONE, xfrm_state_pol_flow_match,
+ struct xfrm_state *x, struct xfrm_policy *xp,
+ const struct flowi_common *flic)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, xfrm_decode_session,
+ struct sk_buff *skb, u32 *secid, int ckall)
#endif /* CONFIG_SECURITY_NETWORK_XFRM */
/* key management security hooks */
#ifdef CONFIG_KEYS
-LSM_HOOK(int, 0, key_alloc, struct key *key, const struct cred *cred,
- unsigned long flags)
-LSM_HOOK(void, LSM_RET_VOID, key_free, struct key *key)
-LSM_HOOK(int, 0, key_permission, key_ref_t key_ref, const struct cred *cred,
- enum key_need_perm need_perm)
-LSM_HOOK(int, 0, key_getsecurity, struct key *key, char **_buffer)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, key_alloc, struct key *key,
+ const struct cred *cred, unsigned long flags)
+LSM_HOOK(void, LSM_RET_VOID, 0, key_free, struct key *key)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, key_permission, key_ref_t key_ref,
+ const struct cred *cred, enum key_need_perm need_perm)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE | LSM_RET_GT_ONE,
+ key_getsecurity, struct key *key, char **_buffer)
#endif /* CONFIG_KEYS */
#ifdef CONFIG_AUDIT
-LSM_HOOK(int, 0, audit_rule_init, u32 field, u32 op, char *rulestr,
- void **lsmrule)
-LSM_HOOK(int, 0, audit_rule_known, struct audit_krule *krule)
-LSM_HOOK(int, 0, audit_rule_match, u32 secid, u32 field, u32 op, void *lsmrule)
-LSM_HOOK(void, LSM_RET_VOID, audit_rule_free, void *lsmrule)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, audit_rule_init, u32 field, u32 op,
+ char *rulestr, void **lsmrule)
+LSM_HOOK(int, 0, LSM_RET_ZERO | LSM_RET_ONE, audit_rule_known,
+ struct audit_krule *krule)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO | LSM_RET_ONE, audit_rule_match,
+ u32 secid, u32 field, u32 op, void *lsmrule)
+LSM_HOOK(void, LSM_RET_VOID, 0, audit_rule_free, void *lsmrule)
#endif /* CONFIG_AUDIT */
#ifdef CONFIG_BPF_SYSCALL
-LSM_HOOK(int, 0, bpf, int cmd, union bpf_attr *attr, unsigned int size)
-LSM_HOOK(int, 0, bpf_map, struct bpf_map *map, fmode_t fmode)
-LSM_HOOK(int, 0, bpf_prog, struct bpf_prog *prog)
-LSM_HOOK(int, 0, bpf_map_alloc_security, struct bpf_map *map)
-LSM_HOOK(void, LSM_RET_VOID, bpf_map_free_security, struct bpf_map *map)
-LSM_HOOK(int, 0, bpf_prog_alloc_security, struct bpf_prog_aux *aux)
-LSM_HOOK(void, LSM_RET_VOID, bpf_prog_free_security, struct bpf_prog_aux *aux)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, bpf, int cmd, union bpf_attr *attr,
+ unsigned int size)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, bpf_map, struct bpf_map *map,
+ fmode_t fmode)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, bpf_prog, struct bpf_prog *prog)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, bpf_map_alloc_security,
+ struct bpf_map *map)
+LSM_HOOK(void, LSM_RET_VOID, 0, bpf_map_free_security, struct bpf_map *map)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, bpf_prog_alloc_security,
+ struct bpf_prog_aux *aux)
+LSM_HOOK(void, LSM_RET_VOID, 0, bpf_prog_free_security, struct bpf_prog_aux *aux)
#endif /* CONFIG_BPF_SYSCALL */
-LSM_HOOK(int, 0, locked_down, enum lockdown_reason what)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, locked_down,
+ enum lockdown_reason what)
#ifdef CONFIG_PERF_EVENTS
-LSM_HOOK(int, 0, perf_event_open, struct perf_event_attr *attr, int type)
-LSM_HOOK(int, 0, perf_event_alloc, struct perf_event *event)
-LSM_HOOK(void, LSM_RET_VOID, perf_event_free, struct perf_event *event)
-LSM_HOOK(int, 0, perf_event_read, struct perf_event *event)
-LSM_HOOK(int, 0, perf_event_write, struct perf_event *event)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, perf_event_open,
+ struct perf_event_attr *attr, int type)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, perf_event_alloc,
+ struct perf_event *event)
+LSM_HOOK(void, LSM_RET_VOID, 0, perf_event_free, struct perf_event *event)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, perf_event_read,
+ struct perf_event *event)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, perf_event_write,
+ struct perf_event *event)
#endif /* CONFIG_PERF_EVENTS */
#ifdef CONFIG_IO_URING
-LSM_HOOK(int, 0, uring_override_creds, const struct cred *new)
-LSM_HOOK(int, 0, uring_sqpoll, void)
-LSM_HOOK(int, 0, uring_cmd, struct io_uring_cmd *ioucmd)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, uring_override_creds,
+ const struct cred *new)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, uring_sqpoll, void)
+LSM_HOOK(int, 0, LSM_RET_NEG | LSM_RET_ZERO, uring_cmd,
+ struct io_uring_cmd *ioucmd)
#endif /* CONFIG_IO_URING */
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 883f0f252f06..d1859b8ab9a3 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -1591,13 +1591,13 @@
*
*/
union security_list_options {
- #define LSM_HOOK(RET, DEFAULT, NAME, ...) RET (*NAME)(__VA_ARGS__);
+ #define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) RET (*NAME)(__VA_ARGS__);
#include "lsm_hook_defs.h"
#undef LSM_HOOK
};
struct security_hook_heads {
- #define LSM_HOOK(RET, DEFAULT, NAME, ...) struct hlist_head NAME;
+ #define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) struct hlist_head NAME;
#include "lsm_hook_defs.h"
#undef LSM_HOOK
} __randomize_layout;
@@ -1632,6 +1632,11 @@ struct lsm_blob_sizes {
*/
#define LSM_RET_VOID ((void) 0)
+#define LSM_RET_NEG 0x01
+#define LSM_RET_ZERO 0x02
+#define LSM_RET_ONE 0x04
+#define LSM_RET_GT_ONE 0x08
+
/*
* Initializing a security_hook_list structure takes
* up a lot of space in a source file. This macro takes
diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c
index 9ea42a45da47..98f810f661a6 100644
--- a/kernel/bpf/bpf_lsm.c
+++ b/kernel/bpf/bpf_lsm.c
@@ -21,7 +21,7 @@
/* For every LSM hook that allows attachment of BPF programs, declare a nop
* function where a BPF program can be attached.
*/
-#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
+#define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) \
noinline RET bpf_lsm_##NAME(__VA_ARGS__) \
{ \
return DEFAULT; \
@@ -30,7 +30,8 @@ noinline RET bpf_lsm_##NAME(__VA_ARGS__) \
#include <linux/lsm_hook_defs.h>
#undef LSM_HOOK
-#define LSM_HOOK(RET, DEFAULT, NAME, ...) BTF_ID(func, bpf_lsm_##NAME)
+#define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) \
+ BTF_ID(func, bpf_lsm_##NAME)
BTF_SET_START(bpf_lsm_hooks)
#include <linux/lsm_hook_defs.h>
#undef LSM_HOOK
diff --git a/security/bpf/hooks.c b/security/bpf/hooks.c
index e5971fa74fd7..a2a3b2be345f 100644
--- a/security/bpf/hooks.c
+++ b/security/bpf/hooks.c
@@ -7,7 +7,7 @@
#include <linux/bpf_lsm.h>
static struct security_hook_list bpf_lsm_hooks[] __lsm_ro_after_init = {
- #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
+ #define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) \
LSM_HOOK_INIT(NAME, bpf_lsm_##NAME),
#include <linux/lsm_hook_defs.h>
#undef LSM_HOOK
diff --git a/security/security.c b/security/security.c
index f27c885ee98d..357cd845d1ed 100644
--- a/security/security.c
+++ b/security/security.c
@@ -371,7 +371,7 @@ int __init early_security_init(void)
{
struct lsm_info *lsm;
-#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
+#define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) \
INIT_HLIST_HEAD(&security_hook_heads.NAME);
#include "linux/lsm_hook_defs.h"
#undef LSM_HOOK
@@ -710,7 +710,7 @@ static int lsm_superblock_alloc(struct super_block *sb)
#define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
#define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
static const int __maybe_unused LSM_RET_DEFAULT(NAME) = (DEFAULT);
-#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
+#define LSM_HOOK(RET, DEFAULT, RET_FLAGS, NAME, ...) \
DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
#include <linux/lsm_hook_defs.h>
--
2.25.1
