diff options
Diffstat (limited to 'include/linux/security.h')
| -rw-r--r-- | include/linux/security.h | 131 |
1 files changed, 68 insertions, 63 deletions
diff --git a/include/linux/security.h b/include/linux/security.h index 50737c70e78e..f5c4a51eb42e 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -46,7 +46,8 @@ struct audit_krule; */ extern int cap_capable(struct task_struct *tsk, int cap); extern int cap_settime(struct timespec *ts, struct timezone *tz); -extern int cap_ptrace(struct task_struct *parent, struct task_struct *child); +extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode); +extern int cap_ptrace_traceme(struct task_struct *parent); extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); extern int cap_capset_check(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); extern void cap_capset_set(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); @@ -79,6 +80,7 @@ struct xfrm_selector; struct xfrm_policy; struct xfrm_state; struct xfrm_user_sec_ctx; +struct seq_file; extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb); extern int cap_netlink_recv(struct sk_buff *skb, int cap); @@ -100,9 +102,7 @@ extern unsigned long mmap_min_addr; #define LSM_SETID_FS 8 /* forward declares to avoid warnings */ -struct nfsctl_arg; struct sched_param; -struct swap_info_struct; struct request_sock; /* bprm_apply_creds unsafe reasons */ @@ -289,10 +289,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * Update module state after a successful pivot. * @old_path contains the path for the old root. * @new_path contains the path for the new root. - * @sb_get_mnt_opts: - * Get the security relevant mount options used for a superblock - * @sb the superblock to get security mount options from - * @opts binary data structure containing all lsm mount data * @sb_set_mnt_opts: * Set the security relevant mount options used for a superblock * @sb the superblock to set security mount options for @@ -1161,15 +1157,23 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @alter contains the flag indicating whether changes are to be made. * Return 0 if permission is granted. * - * @ptrace: - * Check permission before allowing the @parent process to trace the + * @ptrace_may_access: + * Check permission before allowing the current process to trace the * @child process. * Security modules may also want to perform a process tracing check * during an execve in the set_security or apply_creds hooks of * binprm_security_ops if the process is being traced and its security * attributes would be changed by the execve. - * @parent contains the task_struct structure for parent process. - * @child contains the task_struct structure for child process. + * @child contains the task_struct structure for the target process. + * @mode contains the PTRACE_MODE flags indicating the form of access. + * Return 0 if permission is granted. + * @ptrace_traceme: + * Check that the @parent process has sufficient permission to trace the + * current process before allowing the current process to present itself + * to the @parent process for tracing. + * The parent process will still have to undergo the ptrace_may_access + * checks before it is allowed to trace this one. + * @parent contains the task_struct structure for debugger process. * Return 0 if permission is granted. * @capget: * Get the @effective, @inheritable, and @permitted capability sets for @@ -1240,11 +1244,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @pages contains the number of pages. * Return 0 if permission is granted. * - * @register_security: - * allow module stacking. - * @name contains the name of the security module being stacked. - * @ops contains a pointer to the struct security_operations of the module to stack. - * * @secid_to_secctx: * Convert secid to security context. * @secid contains the security ID. @@ -1295,7 +1294,8 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) struct security_operations { char name[SECURITY_NAME_MAX + 1]; - int (*ptrace) (struct task_struct *parent, struct task_struct *child); + int (*ptrace_may_access) (struct task_struct *child, unsigned int mode); + int (*ptrace_traceme) (struct task_struct *parent); int (*capget) (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); @@ -1328,6 +1328,7 @@ struct security_operations { void (*sb_free_security) (struct super_block *sb); int (*sb_copy_data) (char *orig, char *copy); int (*sb_kern_mount) (struct super_block *sb, void *data); + int (*sb_show_options) (struct seq_file *m, struct super_block *sb); int (*sb_statfs) (struct dentry *dentry); int (*sb_mount) (char *dev_name, struct path *path, char *type, unsigned long flags, void *data); @@ -1343,8 +1344,6 @@ struct security_operations { struct path *new_path); void (*sb_post_pivotroot) (struct path *old_path, struct path *new_path); - int (*sb_get_mnt_opts) (const struct super_block *sb, - struct security_mnt_opts *opts); int (*sb_set_mnt_opts) (struct super_block *sb, struct security_mnt_opts *opts); void (*sb_clone_mnt_opts) (const struct super_block *oldsb, @@ -1370,7 +1369,7 @@ struct security_operations { struct inode *new_dir, struct dentry *new_dentry); int (*inode_readlink) (struct dentry *dentry); int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd); - int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd); + int (*inode_permission) (struct inode *inode, int mask); int (*inode_setattr) (struct dentry *dentry, struct iattr *attr); int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry); void (*inode_delete) (struct inode *inode); @@ -1472,10 +1471,6 @@ struct security_operations { int (*netlink_send) (struct sock *sk, struct sk_buff *skb); int (*netlink_recv) (struct sk_buff *skb, int cap); - /* allow module stacking */ - int (*register_security) (const char *name, - struct security_operations *ops); - void (*d_instantiate) (struct dentry *dentry, struct inode *inode); int (*getprocattr) (struct task_struct *p, char *name, char **value); @@ -1565,15 +1560,10 @@ struct security_operations { extern int security_init(void); extern int security_module_enable(struct security_operations *ops); extern int register_security(struct security_operations *ops); -extern int mod_reg_security(const char *name, struct security_operations *ops); -extern struct dentry *securityfs_create_file(const char *name, mode_t mode, - struct dentry *parent, void *data, - const struct file_operations *fops); -extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); -extern void securityfs_remove(struct dentry *dentry); /* Security operations */ -int security_ptrace(struct task_struct *parent, struct task_struct *child); +int security_ptrace_may_access(struct task_struct *child, unsigned int mode); +int security_ptrace_traceme(struct task_struct *parent); int security_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, @@ -1606,6 +1596,7 @@ int security_sb_alloc(struct super_block *sb); void security_sb_free(struct super_block *sb); int security_sb_copy_data(char *orig, char *copy); int security_sb_kern_mount(struct super_block *sb, void *data); +int security_sb_show_options(struct seq_file *m, struct super_block *sb); int security_sb_statfs(struct dentry *dentry); int security_sb_mount(char *dev_name, struct path *path, char *type, unsigned long flags, void *data); @@ -1617,8 +1608,6 @@ void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *d void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint); int security_sb_pivotroot(struct path *old_path, struct path *new_path); void security_sb_post_pivotroot(struct path *old_path, struct path *new_path); -int security_sb_get_mnt_opts(const struct super_block *sb, - struct security_mnt_opts *opts); int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts); void security_sb_clone_mnt_opts(const struct super_block *oldsb, struct super_block *newsb); @@ -1641,7 +1630,7 @@ int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry); int security_inode_readlink(struct dentry *dentry); int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd); -int security_inode_permission(struct inode *inode, int mask, struct nameidata *nd); +int security_inode_permission(struct inode *inode, int mask); int security_inode_setattr(struct dentry *dentry, struct iattr *attr); int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry); void security_inode_delete(struct inode *inode); @@ -1755,9 +1744,15 @@ static inline int security_init(void) return 0; } -static inline int security_ptrace(struct task_struct *parent, struct task_struct *child) +static inline int security_ptrace_may_access(struct task_struct *child, + unsigned int mode) { - return cap_ptrace(parent, child); + return cap_ptrace_may_access(child, mode); +} + +static inline int security_ptrace_traceme(struct task_struct *parent) +{ + return cap_ptrace_traceme(parent); } static inline int security_capget(struct task_struct *target, @@ -1881,6 +1876,12 @@ static inline int security_sb_kern_mount(struct super_block *sb, void *data) return 0; } +static inline int security_sb_show_options(struct seq_file *m, + struct super_block *sb) +{ + return 0; +} + static inline int security_sb_statfs(struct dentry *dentry) { return 0; @@ -1927,12 +1928,6 @@ static inline int security_sb_pivotroot(struct path *old_path, static inline void security_sb_post_pivotroot(struct path *old_path, struct path *new_path) { } -static inline int security_sb_get_mnt_opts(const struct super_block *sb, - struct security_mnt_opts *opts) -{ - security_init_mnt_opts(opts); - return 0; -} static inline int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts) @@ -2032,8 +2027,7 @@ static inline int security_inode_follow_link(struct dentry *dentry, return 0; } -static inline int security_inode_permission(struct inode *inode, int mask, - struct nameidata *nd) +static inline int security_inode_permission(struct inode *inode, int mask) { return 0; } @@ -2425,25 +2419,6 @@ static inline int security_netlink_recv(struct sk_buff *skb, int cap) return cap_netlink_recv(skb, cap); } -static inline struct dentry *securityfs_create_dir(const char *name, - struct dentry *parent) -{ - return ERR_PTR(-ENODEV); -} - -static inline struct dentry *securityfs_create_file(const char *name, - mode_t mode, - struct dentry *parent, - void *data, - const struct file_operations *fops) -{ - return ERR_PTR(-ENODEV); -} - -static inline void securityfs_remove(struct dentry *dentry) -{ -} - static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) { return -EOPNOTSUPP; @@ -2807,5 +2782,35 @@ static inline void security_audit_rule_free(void *lsmrule) #endif /* CONFIG_SECURITY */ #endif /* CONFIG_AUDIT */ +#ifdef CONFIG_SECURITYFS + +extern struct dentry *securityfs_create_file(const char *name, mode_t mode, + struct dentry *parent, void *data, + const struct file_operations *fops); +extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); +extern void securityfs_remove(struct dentry *dentry); + +#else /* CONFIG_SECURITYFS */ + +static inline struct dentry *securityfs_create_dir(const char *name, + struct dentry *parent) +{ + return ERR_PTR(-ENODEV); +} + +static inline struct dentry *securityfs_create_file(const char *name, + mode_t mode, + struct dentry *parent, + void *data, + const struct file_operations *fops) +{ + return ERR_PTR(-ENODEV); +} + +static inline void securityfs_remove(struct dentry *dentry) +{} + +#endif + #endif /* ! __LINUX_SECURITY_H */ |