diff options
Diffstat (limited to 'security/capability.c')
| -rw-r--r-- | security/capability.c | 372 |
1 files changed, 253 insertions, 119 deletions
diff --git a/security/capability.c b/security/capability.c index 24587481903..e76373de312 100644 --- a/security/capability.c +++ b/security/capability.c @@ -12,12 +12,7 @@ #include <linux/security.h> -static int cap_acct(struct file *file) -{ - return 0; -} - -static int cap_sysctl(ctl_table *table, int op) +static int cap_syslog(int type) { return 0; } @@ -32,24 +27,19 @@ static int cap_quota_on(struct dentry *dentry) return 0; } -static int cap_bprm_alloc_security(struct linux_binprm *bprm) +static int cap_bprm_check_security(struct linux_binprm *bprm) { return 0; } -static void cap_bprm_free_security(struct linux_binprm *bprm) +static void cap_bprm_committing_creds(struct linux_binprm *bprm) { } -static void cap_bprm_post_apply_creds(struct linux_binprm *bprm) +static void cap_bprm_committed_creds(struct linux_binprm *bprm) { } -static int cap_bprm_check_security(struct linux_binprm *bprm) -{ - return 0; -} - static int cap_sb_alloc_security(struct super_block *sb) { return 0; @@ -64,28 +54,28 @@ static int cap_sb_copy_data(char *orig, char *copy) return 0; } -static int cap_sb_kern_mount(struct super_block *sb, void *data) +static int cap_sb_remount(struct super_block *sb, void *data) { return 0; } -static int cap_sb_show_options(struct seq_file *m, struct super_block *sb) +static int cap_sb_kern_mount(struct super_block *sb, int flags, void *data) { return 0; } -static int cap_sb_statfs(struct dentry *dentry) +static int cap_sb_show_options(struct seq_file *m, struct super_block *sb) { return 0; } -static int cap_sb_mount(char *dev_name, struct path *path, char *type, - unsigned long flags, void *data) +static int cap_sb_statfs(struct dentry *dentry) { return 0; } -static int cap_sb_check_sb(struct vfsmount *mnt, struct path *path) +static int cap_sb_mount(const char *dev_name, struct path *path, + const char *type, unsigned long flags, void *data) { return 0; } @@ -95,43 +85,26 @@ static int cap_sb_umount(struct vfsmount *mnt, int flags) return 0; } -static void cap_sb_umount_close(struct vfsmount *mnt) -{ -} - -static void cap_sb_umount_busy(struct vfsmount *mnt) -{ -} - -static void cap_sb_post_remount(struct vfsmount *mnt, unsigned long flags, - void *data) -{ -} - -static void cap_sb_post_addmount(struct vfsmount *mnt, struct path *path) -{ -} - static int cap_sb_pivotroot(struct path *old_path, struct path *new_path) { return 0; } -static void cap_sb_post_pivotroot(struct path *old_path, struct path *new_path) -{ -} - static int cap_sb_set_mnt_opts(struct super_block *sb, - struct security_mnt_opts *opts) + struct security_mnt_opts *opts, + unsigned long kern_flags, + unsigned long *set_kern_flags) + { if (unlikely(opts->num_mnt_opts)) return -EOPNOTSUPP; return 0; } -static void cap_sb_clone_mnt_opts(const struct super_block *oldsb, +static int cap_sb_clone_mnt_opts(const struct super_block *oldsb, struct super_block *newsb) { + return 0; } static int cap_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) @@ -139,6 +112,13 @@ static int cap_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) return 0; } +static int cap_dentry_init_security(struct dentry *dentry, int mode, + struct qstr *name, void **ctx, + u32 *ctxlen) +{ + return -EOPNOTSUPP; +} + static int cap_inode_alloc_security(struct inode *inode) { return 0; @@ -149,13 +129,14 @@ static void cap_inode_free_security(struct inode *inode) } static int cap_inode_init_security(struct inode *inode, struct inode *dir, - char **name, void **value, size_t *len) + const struct qstr *qstr, const char **name, + void **value, size_t *len) { return -EOPNOTSUPP; } static int cap_inode_create(struct inode *inode, struct dentry *dentry, - int mask) + umode_t mask) { return 0; } @@ -178,7 +159,7 @@ static int cap_inode_symlink(struct inode *inode, struct dentry *dentry, } static int cap_inode_mkdir(struct inode *inode, struct dentry *dentry, - int mask) + umode_t mask) { return 0; } @@ -189,7 +170,7 @@ static int cap_inode_rmdir(struct inode *inode, struct dentry *dentry) } static int cap_inode_mknod(struct inode *inode, struct dentry *dentry, - int mode, dev_t dev) + umode_t mode, dev_t dev) { return 0; } @@ -226,10 +207,6 @@ static int cap_inode_getattr(struct vfsmount *mnt, struct dentry *dentry) return 0; } -static void cap_inode_delete(struct inode *ino) -{ -} - static void cap_inode_post_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags) { @@ -268,6 +245,67 @@ static void cap_inode_getsecid(const struct inode *inode, u32 *secid) *secid = 0; } +#ifdef CONFIG_SECURITY_PATH +static int cap_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, + unsigned int dev) +{ + return 0; +} + +static int cap_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode) +{ + return 0; +} + +static int cap_path_rmdir(struct path *dir, struct dentry *dentry) +{ + return 0; +} + +static int cap_path_unlink(struct path *dir, struct dentry *dentry) +{ + return 0; +} + +static int cap_path_symlink(struct path *dir, struct dentry *dentry, + const char *old_name) +{ + return 0; +} + +static int cap_path_link(struct dentry *old_dentry, struct path *new_dir, + struct dentry *new_dentry) +{ + return 0; +} + +static int cap_path_rename(struct path *old_path, struct dentry *old_dentry, + struct path *new_path, struct dentry *new_dentry) +{ + return 0; +} + +static int cap_path_truncate(struct path *path) +{ + return 0; +} + +static int cap_path_chmod(struct path *path, umode_t mode) +{ + return 0; +} + +static int cap_path_chown(struct path *path, kuid_t uid, kgid_t gid) +{ + return 0; +} + +static int cap_path_chroot(struct path *root) +{ + return 0; +} +#endif + static int cap_file_permission(struct file *file, int mask) { return 0; @@ -288,15 +326,6 @@ static int cap_file_ioctl(struct file *file, unsigned int command, return 0; } -static int cap_file_mmap(struct file *file, unsigned long reqprot, - unsigned long prot, unsigned long flags, - unsigned long addr, unsigned long addr_only) -{ - if ((addr < mmap_min_addr) && !capable(CAP_SYS_RAWIO)) - return -EACCES; - return 0; -} - static int cap_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, unsigned long prot) { @@ -330,7 +359,7 @@ static int cap_file_receive(struct file *file) return 0; } -static int cap_dentry_open(struct file *file) +static int cap_file_open(struct file *file, const struct cred *cred) { return 0; } @@ -340,21 +369,44 @@ static int cap_task_create(unsigned long clone_flags) return 0; } -static int cap_task_alloc_security(struct task_struct *p) +static void cap_task_free(struct task_struct *task) +{ +} + +static int cap_cred_alloc_blank(struct cred *cred, gfp_t gfp) +{ + return 0; +} + +static void cap_cred_free(struct cred *cred) +{ +} + +static int cap_cred_prepare(struct cred *new, const struct cred *old, gfp_t gfp) +{ + return 0; +} + +static void cap_cred_transfer(struct cred *new, const struct cred *old) +{ +} + +static int cap_kernel_act_as(struct cred *new, u32 secid) { return 0; } -static void cap_task_free_security(struct task_struct *p) +static int cap_kernel_create_files_as(struct cred *new, struct inode *inode) { + return 0; } -static int cap_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags) +static int cap_kernel_module_request(char *kmod_name) { return 0; } -static int cap_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags) +static int cap_kernel_module_from_file(struct file *file) { return 0; } @@ -379,17 +431,13 @@ static void cap_task_getsecid(struct task_struct *p, u32 *secid) *secid = 0; } -static int cap_task_setgroups(struct group_info *group_info) -{ - return 0; -} - static int cap_task_getioprio(struct task_struct *p) { return 0; } -static int cap_task_setrlimit(unsigned int resource, struct rlimit *new_rlim) +static int cap_task_setrlimit(struct task_struct *p, unsigned int resource, + struct rlimit *new_rlim) { return 0; } @@ -520,7 +568,7 @@ static int cap_sem_semop(struct sem_array *sma, struct sembuf *sops, } #ifdef CONFIG_SECURITY_NETWORK -static int cap_unix_stream_connect(struct socket *sock, struct socket *other, +static int cap_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) { return 0; @@ -564,10 +612,6 @@ static int cap_socket_accept(struct socket *sock, struct socket *newsock) return 0; } -static void cap_socket_post_accept(struct socket *sock, struct socket *newsock) -{ -} - static int cap_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) { return 0; @@ -658,15 +702,63 @@ static void cap_inet_conn_established(struct sock *sk, struct sk_buff *skb) { } +static int cap_secmark_relabel_packet(u32 secid) +{ + return 0; +} + +static void cap_secmark_refcount_inc(void) +{ +} + +static void cap_secmark_refcount_dec(void) +{ +} + static void cap_req_classify_flow(const struct request_sock *req, struct flowi *fl) { } + +static int cap_tun_dev_alloc_security(void **security) +{ + return 0; +} + +static void cap_tun_dev_free_security(void *security) +{ +} + +static int cap_tun_dev_create(void) +{ + return 0; +} + +static int cap_tun_dev_attach_queue(void *security) +{ + return 0; +} + +static int cap_tun_dev_attach(struct sock *sk, void *security) +{ + return 0; +} + +static int cap_tun_dev_open(void *security) +{ + return 0; +} + +static void cap_skb_owned_by(struct sk_buff *skb, struct sock *sk) +{ +} + #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM static int cap_xfrm_policy_alloc_security(struct xfrm_sec_ctx **ctxp, - struct xfrm_user_sec_ctx *sec_ctx) + struct xfrm_user_sec_ctx *sec_ctx, + gfp_t gfp) { return 0; } @@ -686,9 +778,15 @@ static int cap_xfrm_policy_delete_security(struct xfrm_sec_ctx *ctx) return 0; } -static int cap_xfrm_state_alloc_security(struct xfrm_state *x, - struct xfrm_user_sec_ctx *sec_ctx, - u32 secid) +static int cap_xfrm_state_alloc(struct xfrm_state *x, + struct xfrm_user_sec_ctx *sec_ctx) +{ + return 0; +} + +static int cap_xfrm_state_alloc_acquire(struct xfrm_state *x, + struct xfrm_sec_ctx *polsec, + u32 secid) { return 0; } @@ -709,7 +807,7 @@ static int cap_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 sk_sid, u8 dir) static int cap_xfrm_state_pol_flow_match(struct xfrm_state *x, struct xfrm_policy *xp, - struct flowi *fl) + const struct flowi *fl) { return 1; } @@ -735,6 +833,11 @@ static int cap_setprocattr(struct task_struct *p, char *name, void *value, return -EINVAL; } +static int cap_ismaclabel(const char *name) +{ + return 0; +} + static int cap_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) { return -EOPNOTSUPP; @@ -742,15 +845,30 @@ static int cap_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) static int cap_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) { - return -EOPNOTSUPP; + *secid = 0; + return 0; } static void cap_release_secctx(char *secdata, u32 seclen) { } +static int cap_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) +{ + return 0; +} + +static int cap_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) +{ + return 0; +} + +static int cap_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) +{ + return -EOPNOTSUPP; +} #ifdef CONFIG_KEYS -static int cap_key_alloc(struct key *key, struct task_struct *ctx, +static int cap_key_alloc(struct key *key, const struct cred *cred, unsigned long flags) { return 0; @@ -760,8 +878,8 @@ static void cap_key_free(struct key *key) { } -static int cap_key_permission(key_ref_t key_ref, struct task_struct *context, - key_perm_t perm) +static int cap_key_permission(key_ref_t key_ref, const struct cred *cred, + unsigned perm) { return 0; } @@ -796,10 +914,6 @@ static void cap_audit_rule_free(void *lsmrule) } #endif /* CONFIG_AUDIT */ -struct security_operations default_security_ops = { - .name = "default", -}; - #define set_to_cap_if_null(ops, function) \ do { \ if (!ops->function) { \ @@ -809,46 +923,37 @@ struct security_operations default_security_ops = { } \ } while (0) -void security_fixup_ops(struct security_operations *ops) +void __init security_fixup_ops(struct security_operations *ops) { - set_to_cap_if_null(ops, ptrace_may_access); + set_to_cap_if_null(ops, ptrace_access_check); set_to_cap_if_null(ops, ptrace_traceme); set_to_cap_if_null(ops, capget); - set_to_cap_if_null(ops, capset_check); - set_to_cap_if_null(ops, capset_set); - set_to_cap_if_null(ops, acct); + set_to_cap_if_null(ops, capset); set_to_cap_if_null(ops, capable); set_to_cap_if_null(ops, quotactl); set_to_cap_if_null(ops, quota_on); - set_to_cap_if_null(ops, sysctl); set_to_cap_if_null(ops, syslog); set_to_cap_if_null(ops, settime); set_to_cap_if_null(ops, vm_enough_memory); - set_to_cap_if_null(ops, bprm_alloc_security); - set_to_cap_if_null(ops, bprm_free_security); - set_to_cap_if_null(ops, bprm_apply_creds); - set_to_cap_if_null(ops, bprm_post_apply_creds); - set_to_cap_if_null(ops, bprm_set_security); + set_to_cap_if_null(ops, bprm_set_creds); + set_to_cap_if_null(ops, bprm_committing_creds); + set_to_cap_if_null(ops, bprm_committed_creds); set_to_cap_if_null(ops, bprm_check_security); set_to_cap_if_null(ops, bprm_secureexec); set_to_cap_if_null(ops, sb_alloc_security); set_to_cap_if_null(ops, sb_free_security); set_to_cap_if_null(ops, sb_copy_data); + set_to_cap_if_null(ops, sb_remount); set_to_cap_if_null(ops, sb_kern_mount); set_to_cap_if_null(ops, sb_show_options); set_to_cap_if_null(ops, sb_statfs); set_to_cap_if_null(ops, sb_mount); - set_to_cap_if_null(ops, sb_check_sb); set_to_cap_if_null(ops, sb_umount); - set_to_cap_if_null(ops, sb_umount_close); - set_to_cap_if_null(ops, sb_umount_busy); - set_to_cap_if_null(ops, sb_post_remount); - set_to_cap_if_null(ops, sb_post_addmount); set_to_cap_if_null(ops, sb_pivotroot); - set_to_cap_if_null(ops, sb_post_pivotroot); set_to_cap_if_null(ops, sb_set_mnt_opts); set_to_cap_if_null(ops, sb_clone_mnt_opts); set_to_cap_if_null(ops, sb_parse_opts_str); + set_to_cap_if_null(ops, dentry_init_security); set_to_cap_if_null(ops, inode_alloc_security); set_to_cap_if_null(ops, inode_free_security); set_to_cap_if_null(ops, inode_init_security); @@ -865,7 +970,6 @@ void security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, inode_permission); set_to_cap_if_null(ops, inode_setattr); set_to_cap_if_null(ops, inode_getattr); - set_to_cap_if_null(ops, inode_delete); set_to_cap_if_null(ops, inode_setxattr); set_to_cap_if_null(ops, inode_post_setxattr); set_to_cap_if_null(ops, inode_getxattr); @@ -877,29 +981,47 @@ void security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, inode_setsecurity); set_to_cap_if_null(ops, inode_listsecurity); set_to_cap_if_null(ops, inode_getsecid); +#ifdef CONFIG_SECURITY_PATH + set_to_cap_if_null(ops, path_mknod); + set_to_cap_if_null(ops, path_mkdir); + set_to_cap_if_null(ops, path_rmdir); + set_to_cap_if_null(ops, path_unlink); + set_to_cap_if_null(ops, path_symlink); + set_to_cap_if_null(ops, path_link); + set_to_cap_if_null(ops, path_rename); + set_to_cap_if_null(ops, path_truncate); + set_to_cap_if_null(ops, path_chmod); + set_to_cap_if_null(ops, path_chown); + set_to_cap_if_null(ops, path_chroot); +#endif set_to_cap_if_null(ops, file_permission); set_to_cap_if_null(ops, file_alloc_security); set_to_cap_if_null(ops, file_free_security); set_to_cap_if_null(ops, file_ioctl); - set_to_cap_if_null(ops, file_mmap); + set_to_cap_if_null(ops, mmap_addr); + set_to_cap_if_null(ops, mmap_file); set_to_cap_if_null(ops, file_mprotect); set_to_cap_if_null(ops, file_lock); set_to_cap_if_null(ops, file_fcntl); set_to_cap_if_null(ops, file_set_fowner); set_to_cap_if_null(ops, file_send_sigiotask); set_to_cap_if_null(ops, file_receive); - set_to_cap_if_null(ops, dentry_open); + set_to_cap_if_null(ops, file_open); set_to_cap_if_null(ops, task_create); - set_to_cap_if_null(ops, task_alloc_security); - set_to_cap_if_null(ops, task_free_security); - set_to_cap_if_null(ops, task_setuid); - set_to_cap_if_null(ops, task_post_setuid); - set_to_cap_if_null(ops, task_setgid); + set_to_cap_if_null(ops, task_free); + set_to_cap_if_null(ops, cred_alloc_blank); + set_to_cap_if_null(ops, cred_free); + set_to_cap_if_null(ops, cred_prepare); + set_to_cap_if_null(ops, cred_transfer); + set_to_cap_if_null(ops, kernel_act_as); + set_to_cap_if_null(ops, kernel_create_files_as); + set_to_cap_if_null(ops, kernel_module_request); + set_to_cap_if_null(ops, kernel_module_from_file); + set_to_cap_if_null(ops, task_fix_setuid); set_to_cap_if_null(ops, task_setpgid); set_to_cap_if_null(ops, task_getpgid); set_to_cap_if_null(ops, task_getsid); set_to_cap_if_null(ops, task_getsecid); - set_to_cap_if_null(ops, task_setgroups); set_to_cap_if_null(ops, task_setnice); set_to_cap_if_null(ops, task_setioprio); set_to_cap_if_null(ops, task_getioprio); @@ -910,7 +1032,6 @@ void security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, task_wait); set_to_cap_if_null(ops, task_kill); set_to_cap_if_null(ops, task_prctl); - set_to_cap_if_null(ops, task_reparent_to_init); set_to_cap_if_null(ops, task_to_inode); set_to_cap_if_null(ops, ipc_permission); set_to_cap_if_null(ops, ipc_getsecid); @@ -933,13 +1054,16 @@ void security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, sem_semctl); set_to_cap_if_null(ops, sem_semop); set_to_cap_if_null(ops, netlink_send); - set_to_cap_if_null(ops, netlink_recv); set_to_cap_if_null(ops, d_instantiate); set_to_cap_if_null(ops, getprocattr); set_to_cap_if_null(ops, setprocattr); + set_to_cap_if_null(ops, ismaclabel); set_to_cap_if_null(ops, secid_to_secctx); set_to_cap_if_null(ops, secctx_to_secid); set_to_cap_if_null(ops, release_secctx); + set_to_cap_if_null(ops, inode_notifysecctx); + set_to_cap_if_null(ops, inode_setsecctx); + set_to_cap_if_null(ops, inode_getsecctx); #ifdef CONFIG_SECURITY_NETWORK set_to_cap_if_null(ops, unix_stream_connect); set_to_cap_if_null(ops, unix_may_send); @@ -949,7 +1073,6 @@ void security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, socket_connect); set_to_cap_if_null(ops, socket_listen); set_to_cap_if_null(ops, socket_accept); - set_to_cap_if_null(ops, socket_post_accept); set_to_cap_if_null(ops, socket_sendmsg); set_to_cap_if_null(ops, socket_recvmsg); set_to_cap_if_null(ops, socket_getsockname); @@ -968,14 +1091,25 @@ void security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, inet_conn_request); set_to_cap_if_null(ops, inet_csk_clone); set_to_cap_if_null(ops, inet_conn_established); + set_to_cap_if_null(ops, secmark_relabel_packet); + set_to_cap_if_null(ops, secmark_refcount_inc); + set_to_cap_if_null(ops, secmark_refcount_dec); set_to_cap_if_null(ops, req_classify_flow); + set_to_cap_if_null(ops, tun_dev_alloc_security); + set_to_cap_if_null(ops, tun_dev_free_security); + set_to_cap_if_null(ops, tun_dev_create); + set_to_cap_if_null(ops, tun_dev_open); + set_to_cap_if_null(ops, tun_dev_attach_queue); + set_to_cap_if_null(ops, tun_dev_attach); + set_to_cap_if_null(ops, skb_owned_by); #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM set_to_cap_if_null(ops, xfrm_policy_alloc_security); set_to_cap_if_null(ops, xfrm_policy_clone_security); set_to_cap_if_null(ops, xfrm_policy_free_security); set_to_cap_if_null(ops, xfrm_policy_delete_security); - set_to_cap_if_null(ops, xfrm_state_alloc_security); + set_to_cap_if_null(ops, xfrm_state_alloc); + set_to_cap_if_null(ops, xfrm_state_alloc_acquire); set_to_cap_if_null(ops, xfrm_state_free_security); set_to_cap_if_null(ops, xfrm_state_delete_security); set_to_cap_if_null(ops, xfrm_policy_lookup); |
