[RFC,v2,3/7] lsm: Redefine LSM_HOOK() macro to add return value flags as argument

Message ID	20221207172434.435893-4-roberto.sassu@huaweicloud.com (mailing list archive)
State	New
Headers	show Return-Path: <linux-kselftest-owner@kernel.org> From: Roberto Sassu <roberto.sassu@huaweicloud.com> To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, revest@chromium.org, jackmanb@chromium.org, mykolal@fb.com, paul@paul-moore.com, jmorris@namei.org, serge@hallyn.com, shuah@kernel.org Cc: bpf@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Roberto Sassu <roberto.sassu@huawei.com> Subject: [RFC][PATCH v2 3/7] lsm: Redefine LSM_HOOK() macro to add return value flags as argument Date: Wed, 7 Dec 2022 18:24:30 +0100 Message-Id: <20221207172434.435893-4-roberto.sassu@huaweicloud.com> In-Reply-To: <20221207172434.435893-1-roberto.sassu@huaweicloud.com> References: <20221207172434.435893-1-roberto.sassu@huaweicloud.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	bpf-lsm: Check return values of security modules \| expand [RFC,v2,0/7] bpf-lsm: Check return values of security modules [RFC,v2,1/7] bpf: Remove superfluous btf_id_set_contains() declaration [RFC,v2,2/7] bpf: Mark ALU32 operations in bpf_reg_state structure [RFC,v2,3/7] lsm: Redefine LSM_HOOK() macro to add return value flags as argument [RFC,v2,4/7] bpf-lsm: Enforce return value limitations on security modules [RFC,v2,5/7] selftests/bpf: Check if return values of LSM programs are allowed [RFC,v2,6/7] selftests/bpf: Prevent positive ret values in test_lsm and verify_pkcs7_sig [RFC,v2,7/7] selftests/bpf: Change return value in test_libbpf_get_fd_by_id_opts.c

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>

[RFC,v2,3/7] lsm: Redefine LSM_HOOK() macro to add return value flags as argument

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Patch