| /* |
| * Security plug functions |
| * |
| * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> |
| * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> |
| * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <linux/capability.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/security.h> |
| #include <linux/integrity.h> |
| #include <linux/ima.h> |
| #include <linux/evm.h> |
| #include <linux/fsnotify.h> |
| #include <linux/mman.h> |
| #include <linux/mount.h> |
| #include <linux/personality.h> |
| #include <linux/backing-dev.h> |
| #include <net/flow.h> |
| |
| #define MAX_LSM_EVM_XATTR 2 |
| |
| /* Boot-time LSM user choice */ |
| static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = |
| CONFIG_DEFAULT_SECURITY; |
| |
| static struct security_operations *security_ops; |
| static struct security_operations default_security_ops = { |
| .name = "default", |
| }; |
| |
| static inline int __init verify(struct security_operations *ops) |
| { |
| /* verify the security_operations structure exists */ |
| if (!ops) |
| return -EINVAL; |
| security_fixup_ops(ops); |
| return 0; |
| } |
| |
| static void __init do_security_initcalls(void) |
| { |
| initcall_t *call; |
| call = __security_initcall_start; |
| while (call < __security_initcall_end) { |
| (*call) (); |
| call++; |
| } |
| } |
| |
| /** |
| * security_init - initializes the security framework |
| * |
| * This should be called early in the kernel initialization sequence. |
| */ |
| int __init security_init(void) |
| { |
| printk(KERN_INFO "Security Framework initialized\n"); |
| |
| security_fixup_ops(&default_security_ops); |
| security_ops = &default_security_ops; |
| do_security_initcalls(); |
| |
| return 0; |
| } |
| |
| void reset_security_ops(void) |
| { |
| security_ops = &default_security_ops; |
| } |
| |
| /* Save user chosen LSM */ |
| static int __init choose_lsm(char *str) |
| { |
| strncpy(chosen_lsm, str, SECURITY_NAME_MAX); |
| return 1; |
| } |
| __setup("security=", choose_lsm); |
| |
| /** |
| * security_module_enable - Load given security module on boot ? |
| * @ops: a pointer to the struct security_operations that is to be checked. |
| * |
| * Each LSM must pass this method before registering its own operations |
| * to avoid security registration races. This method may also be used |
| * to check if your LSM is currently loaded during kernel initialization. |
| * |
| * Return true if: |
| * -The passed LSM is the one chosen by user at boot time, |
| * -or the passed LSM is configured as the default and the user did not |
| * choose an alternate LSM at boot time. |
| * Otherwise, return false. |
| */ |
| int __init security_module_enable(struct security_operations *ops) |
| { |
| return !strcmp(ops->name, chosen_lsm); |
| } |
| |
| /** |
| * register_security - registers a security framework with the kernel |
| * @ops: a pointer to the struct security_options that is to be registered |
| * |
| * This function allows a security module to register itself with the |
| * kernel security subsystem. Some rudimentary checking is done on the @ops |
| * value passed to this function. You'll need to check first if your LSM |
| * is allowed to register its @ops by calling security_module_enable(@ops). |
| * |
| * If there is already a security module registered with the kernel, |
| * an error will be returned. Otherwise %0 is returned on success. |
| */ |
| int __init register_security(struct security_operations *ops) |
| { |
| if (verify(ops)) { |
| printk(KERN_DEBUG "%s could not verify " |
| "security_operations structure.\n", __func__); |
| return -EINVAL; |
| } |
| |
| if (security_ops != &default_security_ops) |
| return -EAGAIN; |
| |
| security_ops = ops; |
| |
| return 0; |
| } |
| |
| /* Security operations */ |
| |
| int security_binder_set_context_mgr(struct task_struct *mgr) |
| { |
| return security_ops->binder_set_context_mgr(mgr); |
| } |
| |
| int security_binder_transaction(struct task_struct *from, struct task_struct *to) |
| { |
| return security_ops->binder_transaction(from, to); |
| } |
| |
| int security_binder_transfer_binder(struct task_struct *from, struct task_struct *to) |
| { |
| return security_ops->binder_transfer_binder(from, to); |
| } |
| |
| int security_binder_transfer_file(struct task_struct *from, struct task_struct *to, struct file *file) |
| { |
| return security_ops->binder_transfer_file(from, to, file); |
| } |
| |
| int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
| { |
| #ifdef CONFIG_SECURITY_YAMA_STACKED |
| int rc; |
| rc = yama_ptrace_access_check(child, mode); |
| if (rc) |
| return rc; |
| #endif |
| return security_ops->ptrace_access_check(child, mode); |
| } |
| |
| int security_ptrace_traceme(struct task_struct *parent) |
| { |
| #ifdef CONFIG_SECURITY_YAMA_STACKED |
| int rc; |
| rc = yama_ptrace_traceme(parent); |
| if (rc) |
| return rc; |
| #endif |
| return security_ops->ptrace_traceme(parent); |
| } |
| |
| int security_capget(struct task_struct *target, |
| kernel_cap_t *effective, |
| kernel_cap_t *inheritable, |
| kernel_cap_t *permitted) |
| { |
| return security_ops->capget(target, effective, inheritable, permitted); |
| } |
| |
| int security_capset(struct cred *new, const struct cred *old, |
| const kernel_cap_t *effective, |
| const kernel_cap_t *inheritable, |
| const kernel_cap_t *permitted) |
| { |
| return security_ops->capset(new, old, |
| effective, inheritable, permitted); |
| } |
| |
| int security_capable(const struct cred *cred, struct user_namespace *ns, |
| int cap) |
| { |
| return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT); |
| } |
| |
| int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, |
| int cap) |
| { |
| return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); |
| } |
| |
| int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
| { |
| return security_ops->quotactl(cmds, type, id, sb); |
| } |
| |
| int security_quota_on(struct dentry *dentry) |
| { |
| return security_ops->quota_on(dentry); |
| } |
| |
| int security_syslog(int type) |
| { |
| return security_ops->syslog(type); |
| } |
| |
| int security_settime(const struct timespec *ts, const struct timezone *tz) |
| { |
| return security_ops->settime(ts, tz); |
| } |
| |
| int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
| { |
| return security_ops->vm_enough_memory(mm, pages); |
| } |
| |
| int security_bprm_set_creds(struct linux_binprm *bprm) |
| { |
| return security_ops->bprm_set_creds(bprm); |
| } |
| |
| int security_bprm_check(struct linux_binprm *bprm) |
| { |
| int ret; |
| |
| ret = security_ops->bprm_check_security(bprm); |
| if (ret) |
| return ret; |
| return ima_bprm_check(bprm); |
| } |
| |
| void security_bprm_committing_creds(struct linux_binprm *bprm) |
| { |
| security_ops->bprm_committing_creds(bprm); |
| } |
| |
| void security_bprm_committed_creds(struct linux_binprm *bprm) |
| { |
| security_ops->bprm_committed_creds(bprm); |
| } |
| |
| int security_bprm_secureexec(struct linux_binprm *bprm) |
| { |
| return security_ops->bprm_secureexec(bprm); |
| } |
| |
| int security_sb_alloc(struct super_block *sb) |
| { |
| return security_ops->sb_alloc_security(sb); |
| } |
| |
| void security_sb_free(struct super_block *sb) |
| { |
| security_ops->sb_free_security(sb); |
| } |
| |
| int security_sb_copy_data(char *orig, char *copy) |
| { |
| return security_ops->sb_copy_data(orig, copy); |
| } |
| EXPORT_SYMBOL(security_sb_copy_data); |
| |
| int security_sb_remount(struct super_block *sb, void *data) |
| { |
| return security_ops->sb_remount(sb, data); |
| } |
| |
| int security_sb_kern_mount(struct super_block *sb, int flags, void *data) |
| { |
| return security_ops->sb_kern_mount(sb, flags, data); |
| } |
| |
| int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
| { |
| return security_ops->sb_show_options(m, sb); |
| } |
| |
| int security_sb_statfs(struct dentry *dentry) |
| { |
| return security_ops->sb_statfs(dentry); |
| } |
| |
| int security_sb_mount(const char *dev_name, struct path *path, |
| const char *type, unsigned long flags, void *data) |
| { |
| return security_ops->sb_mount(dev_name, path, type, flags, data); |
| } |
| |
| int security_sb_umount(struct vfsmount *mnt, int flags) |
| { |
| return security_ops->sb_umount(mnt, flags); |
| } |
| |
| int security_sb_pivotroot(struct path *old_path, struct path *new_path) |
| { |
| return security_ops->sb_pivotroot(old_path, new_path); |
| } |
| |
| int security_sb_set_mnt_opts(struct super_block *sb, |
| struct security_mnt_opts *opts) |
| { |
| return security_ops->sb_set_mnt_opts(sb, opts); |
| } |
| EXPORT_SYMBOL(security_sb_set_mnt_opts); |
| |
| int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
| struct super_block *newsb) |
| { |
| return security_ops->sb_clone_mnt_opts(oldsb, newsb); |
| } |
| EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
| |
| int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) |
| { |
| return security_ops->sb_parse_opts_str(options, opts); |
| } |
| EXPORT_SYMBOL(security_sb_parse_opts_str); |
| |
| int security_inode_alloc(struct inode *inode) |
| { |
| inode->i_security = NULL; |
| return security_ops->inode_alloc_security(inode); |
| } |
| |
| void security_inode_free(struct inode *inode) |
| { |
| integrity_inode_free(inode); |
| security_ops->inode_free_security(inode); |
| } |
| |
| int security_inode_init_security(struct inode *inode, struct inode *dir, |
| const struct qstr *qstr, |
| const initxattrs initxattrs, void *fs_data) |
| { |
| struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
| struct xattr *lsm_xattr, *evm_xattr, *xattr; |
| int ret; |
| |
| if (unlikely(IS_PRIVATE(inode))) |
| return 0; |
| |
| memset(new_xattrs, 0, sizeof new_xattrs); |
| if (!initxattrs) |
| return security_ops->inode_init_security(inode, dir, qstr, |
| NULL, NULL, NULL); |
| lsm_xattr = new_xattrs; |
| ret = security_ops->inode_init_security(inode, dir, qstr, |
| &lsm_xattr->name, |
| &lsm_xattr->value, |
| &lsm_xattr->value_len); |
| if (ret) |
| goto out; |
| |
| evm_xattr = lsm_xattr + 1; |
| ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); |
| if (ret) |
| goto out; |
| ret = initxattrs(inode, new_xattrs, fs_data); |
| out: |
| for (xattr = new_xattrs; xattr->name != NULL; xattr++) { |
| kfree(xattr->name); |
| kfree(xattr->value); |
| } |
| return (ret == -EOPNOTSUPP) ? 0 : ret; |
| } |
| EXPORT_SYMBOL(security_inode_init_security); |
| |
| int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
| const struct qstr *qstr, char **name, |
| void **value, size_t *len) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return -EOPNOTSUPP; |
| return security_ops->inode_init_security(inode, dir, qstr, name, value, |
| len); |
| } |
| EXPORT_SYMBOL(security_old_inode_init_security); |
| |
| #ifdef CONFIG_SECURITY_PATH |
| int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, |
| unsigned int dev) |
| { |
| if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) |
| return 0; |
| return security_ops->path_mknod(dir, dentry, mode, dev); |
| } |
| EXPORT_SYMBOL(security_path_mknod); |
| |
| int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) |
| return 0; |
| return security_ops->path_mkdir(dir, dentry, mode); |
| } |
| EXPORT_SYMBOL(security_path_mkdir); |
| |
| int security_path_rmdir(struct path *dir, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) |
| return 0; |
| return security_ops->path_rmdir(dir, dentry); |
| } |
| |
| int security_path_unlink(struct path *dir, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) |
| return 0; |
| return security_ops->path_unlink(dir, dentry); |
| } |
| EXPORT_SYMBOL(security_path_unlink); |
| |
| int security_path_symlink(struct path *dir, struct dentry *dentry, |
| const char *old_name) |
| { |
| if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) |
| return 0; |
| return security_ops->path_symlink(dir, dentry, old_name); |
| } |
| |
| int security_path_link(struct dentry *old_dentry, struct path *new_dir, |
| struct dentry *new_dentry) |
| { |
| if (unlikely(IS_PRIVATE(old_dentry->d_inode))) |
| return 0; |
| return security_ops->path_link(old_dentry, new_dir, new_dentry); |
| } |
| |
| int security_path_rename(struct path *old_dir, struct dentry *old_dentry, |
| struct path *new_dir, struct dentry *new_dentry) |
| { |
| if (unlikely(IS_PRIVATE(old_dentry->d_inode) || |
| (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) |
| return 0; |
| return security_ops->path_rename(old_dir, old_dentry, new_dir, |
| new_dentry); |
| } |
| EXPORT_SYMBOL(security_path_rename); |
| |
| int security_path_truncate(struct path *path) |
| { |
| if (unlikely(IS_PRIVATE(path->dentry->d_inode))) |
| return 0; |
| return security_ops->path_truncate(path); |
| } |
| |
| int security_path_chmod(struct path *path, umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(path->dentry->d_inode))) |
| return 0; |
| return security_ops->path_chmod(path, mode); |
| } |
| |
| int security_path_chown(struct path *path, kuid_t uid, kgid_t gid) |
| { |
| if (unlikely(IS_PRIVATE(path->dentry->d_inode))) |
| return 0; |
| return security_ops->path_chown(path, uid, gid); |
| } |
| |
| int security_path_chroot(struct path *path) |
| { |
| return security_ops->path_chroot(path); |
| } |
| #endif |
| |
| int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| return security_ops->inode_create(dir, dentry, mode); |
| } |
| EXPORT_SYMBOL_GPL(security_inode_create); |
| |
| int security_inode_post_create(struct inode *dir, struct dentry *dentry, |
| umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| if (security_ops->inode_post_create == NULL) |
| return 0; |
| return security_ops->inode_post_create(dir, dentry, mode); |
| } |
| |
| int security_inode_link(struct dentry *old_dentry, struct inode *dir, |
| struct dentry *new_dentry) |
| { |
| if (unlikely(IS_PRIVATE(old_dentry->d_inode))) |
| return 0; |
| return security_ops->inode_link(old_dentry, dir, new_dentry); |
| } |
| |
| int security_inode_unlink(struct inode *dir, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| return security_ops->inode_unlink(dir, dentry); |
| } |
| |
| int security_inode_symlink(struct inode *dir, struct dentry *dentry, |
| const char *old_name) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| return security_ops->inode_symlink(dir, dentry, old_name); |
| } |
| |
| int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| return security_ops->inode_mkdir(dir, dentry, mode); |
| } |
| EXPORT_SYMBOL_GPL(security_inode_mkdir); |
| |
| int security_inode_rmdir(struct inode *dir, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| return security_ops->inode_rmdir(dir, dentry); |
| } |
| |
| int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| return security_ops->inode_mknod(dir, dentry, mode, dev); |
| } |
| |
| int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, |
| struct inode *new_dir, struct dentry *new_dentry) |
| { |
| if (unlikely(IS_PRIVATE(old_dentry->d_inode) || |
| (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) |
| return 0; |
| return security_ops->inode_rename(old_dir, old_dentry, |
| new_dir, new_dentry); |
| } |
| |
| int security_inode_readlink(struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| return security_ops->inode_readlink(dentry); |
| } |
| |
| int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd) |
| { |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| return security_ops->inode_follow_link(dentry, nd); |
| } |
| |
| int security_inode_permission(struct inode *inode, int mask) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return 0; |
| return security_ops->inode_permission(inode, mask); |
| } |
| |
| int security_inode_setattr(struct dentry *dentry, struct iattr *attr) |
| { |
| int ret; |
| |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| ret = security_ops->inode_setattr(dentry, attr); |
| if (ret) |
| return ret; |
| return evm_inode_setattr(dentry, attr); |
| } |
| EXPORT_SYMBOL_GPL(security_inode_setattr); |
| |
| int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| return security_ops->inode_getattr(mnt, dentry); |
| } |
| |
| int security_inode_setxattr(struct dentry *dentry, const char *name, |
| const void *value, size_t size, int flags) |
| { |
| int ret; |
| |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| ret = security_ops->inode_setxattr(dentry, name, value, size, flags); |
| if (ret) |
| return ret; |
| ret = ima_inode_setxattr(dentry, name, value, size); |
| if (ret) |
| return ret; |
| return evm_inode_setxattr(dentry, name, value, size); |
| } |
| |
| void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
| const void *value, size_t size, int flags) |
| { |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return; |
| security_ops->inode_post_setxattr(dentry, name, value, size, flags); |
| evm_inode_post_setxattr(dentry, name, value, size); |
| } |
| |
| int security_inode_getxattr(struct dentry *dentry, const char *name) |
| { |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| return security_ops->inode_getxattr(dentry, name); |
| } |
| |
| int security_inode_listxattr(struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| return security_ops->inode_listxattr(dentry); |
| } |
| |
| int security_inode_removexattr(struct dentry *dentry, const char *name) |
| { |
| int ret; |
| |
| if (unlikely(IS_PRIVATE(dentry->d_inode))) |
| return 0; |
| ret = security_ops->inode_removexattr(dentry, name); |
| if (ret) |
| return ret; |
| ret = ima_inode_removexattr(dentry, name); |
| if (ret) |
| return ret; |
| return evm_inode_removexattr(dentry, name); |
| } |
| |
| int security_inode_need_killpriv(struct dentry *dentry) |
| { |
| return security_ops->inode_need_killpriv(dentry); |
| } |
| |
| int security_inode_killpriv(struct dentry *dentry) |
| { |
| return security_ops->inode_killpriv(dentry); |
| } |
| |
| int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return -EOPNOTSUPP; |
| return security_ops->inode_getsecurity(inode, name, buffer, alloc); |
| } |
| |
| int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return -EOPNOTSUPP; |
| return security_ops->inode_setsecurity(inode, name, value, size, flags); |
| } |
| |
| int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return 0; |
| return security_ops->inode_listsecurity(inode, buffer, buffer_size); |
| } |
| |
| void security_inode_getsecid(const struct inode *inode, u32 *secid) |
| { |
| security_ops->inode_getsecid(inode, secid); |
| } |
| |
| int security_file_permission(struct file *file, int mask) |
| { |
| int ret; |
| |
| ret = security_ops->file_permission(file, mask); |
| if (ret) |
| return ret; |
| |
| return fsnotify_perm(file, mask); |
| } |
| |
| int security_file_alloc(struct file *file) |
| { |
| return security_ops->file_alloc_security(file); |
| } |
| |
| void security_file_free(struct file *file) |
| { |
| security_ops->file_free_security(file); |
| } |
| |
| int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| { |
| return security_ops->file_ioctl(file, cmd, arg); |
| } |
| |
| static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
| { |
| /* |
| * Does we have PROT_READ and does the application expect |
| * it to imply PROT_EXEC? If not, nothing to talk about... |
| */ |
| if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
| return prot; |
| if (!(current->personality & READ_IMPLIES_EXEC)) |
| return prot; |
| /* |
| * if that's an anonymous mapping, let it. |
| */ |
| if (!file) |
| return prot | PROT_EXEC; |
| /* |
| * ditto if it's not on noexec mount, except that on !MMU we need |
| * BDI_CAP_EXEC_MMAP (== VM_MAYEXEC) in this case |
| */ |
| if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) { |
| #ifndef CONFIG_MMU |
| unsigned long caps = 0; |
| struct address_space *mapping = file->f_mapping; |
| if (mapping && mapping->backing_dev_info) |
| caps = mapping->backing_dev_info->capabilities; |
| if (!(caps & BDI_CAP_EXEC_MAP)) |
| return prot; |
| #endif |
| return prot | PROT_EXEC; |
| } |
| /* anything on noexec mount won't get PROT_EXEC */ |
| return prot; |
| } |
| |
| int security_mmap_file(struct file *file, unsigned long prot, |
| unsigned long flags) |
| { |
| int ret; |
| ret = security_ops->mmap_file(file, prot, |
| mmap_prot(file, prot), flags); |
| if (ret) |
| return ret; |
| return ima_file_mmap(file, prot); |
| } |
| |
| int security_mmap_addr(unsigned long addr) |
| { |
| return security_ops->mmap_addr(addr); |
| } |
| |
| int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
| unsigned long prot) |
| { |
| return security_ops->file_mprotect(vma, reqprot, prot); |
| } |
| |
| int security_file_lock(struct file *file, unsigned int cmd) |
| { |
| return security_ops->file_lock(file, cmd); |
| } |
| |
| int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) |
| { |
| return security_ops->file_fcntl(file, cmd, arg); |
| } |
| |
| int security_file_set_fowner(struct file *file) |
| { |
| return security_ops->file_set_fowner(file); |
| } |
| |
| int security_file_send_sigiotask(struct task_struct *tsk, |
| struct fown_struct *fown, int sig) |
| { |
| return security_ops->file_send_sigiotask(tsk, fown, sig); |
| } |
| |
| int security_file_receive(struct file *file) |
| { |
| return security_ops->file_receive(file); |
| } |
| |
| int security_file_open(struct file *file, const struct cred *cred) |
| { |
| int ret; |
| |
| ret = security_ops->file_open(file, cred); |
| if (ret) |
| return ret; |
| |
| return fsnotify_perm(file, MAY_OPEN); |
| } |
| |
| int security_file_close(struct file *file) |
| { |
| if (security_ops->file_close) |
| return security_ops->file_close(file); |
| |
| return 0; |
| } |
| |
| bool security_allow_merge_bio(struct bio *bio1, struct bio *bio2) |
| { |
| if (security_ops->allow_merge_bio) |
| return security_ops->allow_merge_bio(bio1, bio2); |
| |
| return true; |
| } |
| |
| int security_task_create(unsigned long clone_flags) |
| { |
| return security_ops->task_create(clone_flags); |
| } |
| |
| void security_task_free(struct task_struct *task) |
| { |
| #ifdef CONFIG_SECURITY_YAMA_STACKED |
| yama_task_free(task); |
| #endif |
| security_ops->task_free(task); |
| } |
| |
| int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
| { |
| return security_ops->cred_alloc_blank(cred, gfp); |
| } |
| |
| void security_cred_free(struct cred *cred) |
| { |
| security_ops->cred_free(cred); |
| } |
| |
| int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
| { |
| return security_ops->cred_prepare(new, old, gfp); |
| } |
| |
| void security_transfer_creds(struct cred *new, const struct cred *old) |
| { |
| security_ops->cred_transfer(new, old); |
| } |
| |
| int security_kernel_act_as(struct cred *new, u32 secid) |
| { |
| return security_ops->kernel_act_as(new, secid); |
| } |
| |
| int security_kernel_create_files_as(struct cred *new, struct inode *inode) |
| { |
| return security_ops->kernel_create_files_as(new, inode); |
| } |
| |
| int security_kernel_module_request(char *kmod_name) |
| { |
| return security_ops->kernel_module_request(kmod_name); |
| } |
| |
| int security_kernel_module_from_file(struct file *file) |
| { |
| int ret; |
| |
| ret = security_ops->kernel_module_from_file(file); |
| if (ret) |
| return ret; |
| return ima_module_check(file); |
| } |
| |
| int security_task_fix_setuid(struct cred *new, const struct cred *old, |
| int flags) |
| { |
| return security_ops->task_fix_setuid(new, old, flags); |
| } |
| |
| int security_task_setpgid(struct task_struct *p, pid_t pgid) |
| { |
| return security_ops->task_setpgid(p, pgid); |
| } |
| |
| int security_task_getpgid(struct task_struct *p) |
| { |
| return security_ops->task_getpgid(p); |
| } |
| |
| int security_task_getsid(struct task_struct *p) |
| { |
| return security_ops->task_getsid(p); |
| } |
| |
| void security_task_getsecid(struct task_struct *p, u32 *secid) |
| { |
| security_ops->task_getsecid(p, secid); |
| } |
| EXPORT_SYMBOL(security_task_getsecid); |
| |
| int security_task_setnice(struct task_struct *p, int nice) |
| { |
| return security_ops->task_setnice(p, nice); |
| } |
| |
| int security_task_setioprio(struct task_struct *p, int ioprio) |
| { |
| return security_ops->task_setioprio(p, ioprio); |
| } |
| |
| int security_task_getioprio(struct task_struct *p) |
| { |
| return security_ops->task_getioprio(p); |
| } |
| |
| int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
| struct rlimit *new_rlim) |
| { |
| return security_ops->task_setrlimit(p, resource, new_rlim); |
| } |
| |
| int security_task_setscheduler(struct task_struct *p) |
| { |
| return security_ops->task_setscheduler(p); |
| } |
| |
| int security_task_getscheduler(struct task_struct *p) |
| { |
| return security_ops->task_getscheduler(p); |
| } |
| |
| int security_task_movememory(struct task_struct *p) |
| { |
| return security_ops->task_movememory(p); |
| } |
| |
| int security_task_kill(struct task_struct *p, struct siginfo *info, |
| int sig, u32 secid) |
| { |
| return security_ops->task_kill(p, info, sig, secid); |
| } |
| |
| int security_task_wait(struct task_struct *p) |
| { |
| return security_ops->task_wait(p); |
| } |
| |
| int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
| unsigned long arg4, unsigned long arg5) |
| { |
| #ifdef CONFIG_SECURITY_YAMA_STACKED |
| int rc; |
| rc = yama_task_prctl(option, arg2, arg3, arg4, arg5); |
| if (rc != -ENOSYS) |
| return rc; |
| #endif |
| return security_ops->task_prctl(option, arg2, arg3, arg4, arg5); |
| } |
| |
| void security_task_to_inode(struct task_struct *p, struct inode *inode) |
| { |
| security_ops->task_to_inode(p, inode); |
| } |
| |
| int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) |
| { |
| return security_ops->ipc_permission(ipcp, flag); |
| } |
| |
| void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
| { |
| security_ops->ipc_getsecid(ipcp, secid); |
| } |
| |
| int security_msg_msg_alloc(struct msg_msg *msg) |
| { |
| return security_ops->msg_msg_alloc_security(msg); |
| } |
| |
| void security_msg_msg_free(struct msg_msg *msg) |
| { |
| security_ops->msg_msg_free_security(msg); |
| } |
| |
| int security_msg_queue_alloc(struct msg_queue *msq) |
| { |
| return security_ops->msg_queue_alloc_security(msq); |
| } |
| |
| void security_msg_queue_free(struct msg_queue *msq) |
| { |
| security_ops->msg_queue_free_security(msq); |
| } |
| |
| int security_msg_queue_associate(struct msg_queue *msq, int msqflg) |
| { |
| return security_ops->msg_queue_associate(msq, msqflg); |
| } |
| |
| int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) |
| { |
| return security_ops->msg_queue_msgctl(msq, cmd); |
| } |
| |
| int security_msg_queue_msgsnd(struct msg_queue *msq, |
| struct msg_msg *msg, int msqflg) |
| { |
| return security_ops->msg_queue_msgsnd(msq, msg, msqflg); |
| } |
| |
| int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, |
| struct task_struct *target, long type, int mode) |
| { |
| return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode); |
| } |
| |
| int security_shm_alloc(struct shmid_kernel *shp) |
| { |
| return security_ops->shm_alloc_security(shp); |
| } |
| |
| void security_shm_free(struct shmid_kernel *shp) |
| { |
| security_ops->shm_free_security(shp); |
| } |
| |
| int security_shm_associate(struct shmid_kernel *shp, int shmflg) |
| { |
| return security_ops->shm_associate(shp, shmflg); |
| } |
| |
| int security_shm_shmctl(struct shmid_kernel *shp, int cmd) |
| { |
| return security_ops->shm_shmctl(shp, cmd); |
| } |
| |
| int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) |
| { |
| return security_ops->shm_shmat(shp, shmaddr, shmflg); |
| } |
| |
| int security_sem_alloc(struct sem_array *sma) |
| { |
| return security_ops->sem_alloc_security(sma); |
| } |
| |
| void security_sem_free(struct sem_array *sma) |
| { |
| security_ops->sem_free_security(sma); |
| } |
| |
| int security_sem_associate(struct sem_array *sma, int semflg) |
| { |
| return security_ops->sem_associate(sma, semflg); |
| } |
| |
| int security_sem_semctl(struct sem_array *sma, int cmd) |
| { |
| return security_ops->sem_semctl(sma, cmd); |
| } |
| |
| int security_sem_semop(struct sem_array *sma, struct sembuf *sops, |
| unsigned nsops, int alter) |
| { |
| return security_ops->sem_semop(sma, sops, nsops, alter); |
| } |
| |
| void security_d_instantiate(struct dentry *dentry, struct inode *inode) |
| { |
| if (unlikely(inode && IS_PRIVATE(inode))) |
| return; |
| security_ops->d_instantiate(dentry, inode); |
| } |
| EXPORT_SYMBOL(security_d_instantiate); |
| |
| int security_getprocattr(struct task_struct *p, char *name, char **value) |
| { |
| return security_ops->getprocattr(p, name, value); |
| } |
| |
| int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) |
| { |
| return security_ops->setprocattr(p, name, value, size); |
| } |
| |
| int security_netlink_send(struct sock *sk, struct sk_buff *skb) |
| { |
| return security_ops->netlink_send(sk, skb); |
| } |
| |
| int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
| { |
| return security_ops->secid_to_secctx(secid, secdata, seclen); |
| } |
| EXPORT_SYMBOL(security_secid_to_secctx); |
| |
| int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
| { |
| return security_ops->secctx_to_secid(secdata, seclen, secid); |
| } |
| EXPORT_SYMBOL(security_secctx_to_secid); |
| |
| void security_release_secctx(char *secdata, u32 seclen) |
| { |
| security_ops->release_secctx(secdata, seclen); |
| } |
| EXPORT_SYMBOL(security_release_secctx); |
| |
| int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
| { |
| return security_ops->inode_notifysecctx(inode, ctx, ctxlen); |
| } |
| EXPORT_SYMBOL(security_inode_notifysecctx); |
| |
| int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) |
| { |
| return security_ops->inode_setsecctx(dentry, ctx, ctxlen); |
| } |
| EXPORT_SYMBOL(security_inode_setsecctx); |
| |
| int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) |
| { |
| return security_ops->inode_getsecctx(inode, ctx, ctxlen); |
| } |
| EXPORT_SYMBOL(security_inode_getsecctx); |
| |
| #ifdef CONFIG_SECURITY_NETWORK |
| |
| int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
| { |
| return security_ops->unix_stream_connect(sock, other, newsk); |
| } |
| EXPORT_SYMBOL(security_unix_stream_connect); |
| |
| int security_unix_may_send(struct socket *sock, struct socket *other) |
| { |
| return security_ops->unix_may_send(sock, other); |
| } |
| EXPORT_SYMBOL(security_unix_may_send); |
| |
| int security_socket_create(int family, int type, int protocol, int kern) |
| { |
| return security_ops->socket_create(family, type, protocol, kern); |
| } |
| |
| int security_socket_post_create(struct socket *sock, int family, |
| int type, int protocol, int kern) |
| { |
| return security_ops->socket_post_create(sock, family, type, |
| protocol, kern); |
| } |
| |
| int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
| { |
| return security_ops->socket_bind(sock, address, addrlen); |
| } |
| |
| int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) |
| { |
| return security_ops->socket_connect(sock, address, addrlen); |
| } |
| |
| int security_socket_listen(struct socket *sock, int backlog) |
| { |
| return security_ops->socket_listen(sock, backlog); |
| } |
| |
| int security_socket_accept(struct socket *sock, struct socket *newsock) |
| { |
| return security_ops->socket_accept(sock, newsock); |
| } |
| |
| int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
| { |
| return security_ops->socket_sendmsg(sock, msg, size); |
| } |
| |
| int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, |
| int size, int flags) |
| { |
| return security_ops->socket_recvmsg(sock, msg, size, flags); |
| } |
| |
| int security_socket_getsockname(struct socket *sock) |
| { |
| return security_ops->socket_getsockname(sock); |
| } |
| |
| int security_socket_getpeername(struct socket *sock) |
| { |
| return security_ops->socket_getpeername(sock); |
| } |
| |
| int security_socket_getsockopt(struct socket *sock, int level, int optname) |
| { |
| return security_ops->socket_getsockopt(sock, level, optname); |
| } |
| |
| int security_socket_setsockopt(struct socket *sock, int level, int optname) |
| { |
| return security_ops->socket_setsockopt(sock, level, optname); |
| } |
| |
| int security_socket_shutdown(struct socket *sock, int how) |
| { |
| return security_ops->socket_shutdown(sock, how); |
| } |
| |
| int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) |
| { |
| return security_ops->socket_sock_rcv_skb(sk, skb); |
| } |
| EXPORT_SYMBOL(security_sock_rcv_skb); |
| |
| int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, |
| int __user *optlen, unsigned len) |
| { |
| return security_ops->socket_getpeersec_stream(sock, optval, optlen, len); |
| } |
| |
| int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) |
| { |
| return security_ops->socket_getpeersec_dgram(sock, skb, secid); |
| } |
| EXPORT_SYMBOL(security_socket_getpeersec_dgram); |
| |
| int security_sk_alloc(struct sock *sk, int family, gfp_t priority) |
| { |
| return security_ops->sk_alloc_security(sk, family, priority); |
| } |
| |
| void security_sk_free(struct sock *sk) |
| { |
| security_ops->sk_free_security(sk); |
| } |
| |
| void security_sk_clone(const struct sock *sk, struct sock *newsk) |
| { |
| security_ops->sk_clone_security(sk, newsk); |
| } |
| EXPORT_SYMBOL(security_sk_clone); |
| |
| void security_sk_classify_flow(struct sock *sk, struct flowi *fl) |
| { |
| security_ops->sk_getsecid(sk, &fl->flowi_secid); |
| } |
| EXPORT_SYMBOL(security_sk_classify_flow); |
| |
| void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) |
| { |
| security_ops->req_classify_flow(req, fl); |
| } |
| EXPORT_SYMBOL(security_req_classify_flow); |
| |
| void security_sock_graft(struct sock *sk, struct socket *parent) |
| { |
| security_ops->sock_graft(sk, parent); |
| } |
| EXPORT_SYMBOL(security_sock_graft); |
| |
| int security_inet_conn_request(struct sock *sk, |
| struct sk_buff *skb, struct request_sock *req) |
| { |
| return security_ops->inet_conn_request(sk, skb, req); |
| } |
| EXPORT_SYMBOL(security_inet_conn_request); |
| |
| void security_inet_csk_clone(struct sock *newsk, |
| const struct request_sock *req) |
| { |
| security_ops->inet_csk_clone(newsk, req); |
| } |
| |
| void security_inet_conn_established(struct sock *sk, |
| struct sk_buff *skb) |
| { |
| security_ops->inet_conn_established(sk, skb); |
| } |
| |
| int security_secmark_relabel_packet(u32 secid) |
| { |
| return security_ops->secmark_relabel_packet(secid); |
| } |
| EXPORT_SYMBOL(security_secmark_relabel_packet); |
| |
| void security_secmark_refcount_inc(void) |
| { |
| security_ops->secmark_refcount_inc(); |
| } |
| EXPORT_SYMBOL(security_secmark_refcount_inc); |
| |
| void security_secmark_refcount_dec(void) |
| { |
| security_ops->secmark_refcount_dec(); |
| } |
| EXPORT_SYMBOL(security_secmark_refcount_dec); |
| |
| int security_tun_dev_alloc_security(void **security) |
| { |
| return security_ops->tun_dev_alloc_security(security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_alloc_security); |
| |
| void security_tun_dev_free_security(void *security) |
| { |
| security_ops->tun_dev_free_security(security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_free_security); |
| |
| int security_tun_dev_create(void) |
| { |
| return security_ops->tun_dev_create(); |
| } |
| EXPORT_SYMBOL(security_tun_dev_create); |
| |
| int security_tun_dev_attach_queue(void *security) |
| { |
| return security_ops->tun_dev_attach_queue(security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_attach_queue); |
| |
| int security_tun_dev_attach(struct sock *sk, void *security) |
| { |
| return security_ops->tun_dev_attach(sk, security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_attach); |
| |
| int security_tun_dev_open(void *security) |
| { |
| return security_ops->tun_dev_open(security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_open); |
| |
| void security_skb_owned_by(struct sk_buff *skb, struct sock *sk) |
| { |
| security_ops->skb_owned_by(skb, sk); |
| } |
| |
| #endif /* CONFIG_SECURITY_NETWORK */ |
| |
| #ifdef CONFIG_SECURITY_NETWORK_XFRM |
| |
| int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx) |
| { |
| return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx); |
| } |
| EXPORT_SYMBOL(security_xfrm_policy_alloc); |
| |
| int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
| struct xfrm_sec_ctx **new_ctxp) |
| { |
| return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp); |
| } |
| |
| void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
| { |
| security_ops->xfrm_policy_free_security(ctx); |
| } |
| EXPORT_SYMBOL(security_xfrm_policy_free); |
| |
| int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
| { |
| return security_ops->xfrm_policy_delete_security(ctx); |
| } |
| |
| int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) |
| { |
| return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0); |
| } |
| EXPORT_SYMBOL(security_xfrm_state_alloc); |
| |
| int security_xfrm_state_alloc_acquire(struct xfrm_state *x, |
| struct xfrm_sec_ctx *polsec, u32 secid) |
| { |
| if (!polsec) |
| return 0; |
| /* |
| * We want the context to be taken from secid which is usually |
| * from the sock. |
| */ |
| return security_ops->xfrm_state_alloc_security(x, NULL, secid); |
| } |
| |
| int security_xfrm_state_delete(struct xfrm_state *x) |
| { |
| return security_ops->xfrm_state_delete_security(x); |
| } |
| EXPORT_SYMBOL(security_xfrm_state_delete); |
| |
| void security_xfrm_state_free(struct xfrm_state *x) |
| { |
| security_ops->xfrm_state_free_security(x); |
| } |
| |
| int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
| { |
| return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir); |
| } |
| |
| int security_xfrm_state_pol_flow_match(struct xfrm_state *x, |
| struct xfrm_policy *xp, |
| const struct flowi *fl) |
| { |
| return security_ops->xfrm_state_pol_flow_match(x, xp, fl); |
| } |
| |
| int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) |
| { |
| return security_ops->xfrm_decode_session(skb, secid, 1); |
| } |
| |
| void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) |
| { |
| int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0); |
| |
| BUG_ON(rc); |
| } |
| EXPORT_SYMBOL(security_skb_classify_flow); |
| |
| #endif /* CONFIG_SECURITY_NETWORK_XFRM */ |
| |
| #ifdef CONFIG_KEYS |
| |
| int security_key_alloc(struct key *key, const struct cred *cred, |
| unsigned long flags) |
| { |
| return security_ops->key_alloc(key, cred, flags); |
| } |
| |
| void security_key_free(struct key *key) |
| { |
| security_ops->key_free(key); |
| } |
| |
| int security_key_permission(key_ref_t key_ref, |
| const struct cred *cred, key_perm_t perm) |
| { |
| return security_ops->key_permission(key_ref, cred, perm); |
| } |
| |
| int security_key_getsecurity(struct key *key, char **_buffer) |
| { |
| return security_ops->key_getsecurity(key, _buffer); |
| } |
| |
| #endif /* CONFIG_KEYS */ |
| |
| #ifdef CONFIG_AUDIT |
| |
| int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) |
| { |
| return security_ops->audit_rule_init(field, op, rulestr, lsmrule); |
| } |
| |
| int security_audit_rule_known(struct audit_krule *krule) |
| { |
| return security_ops->audit_rule_known(krule); |
| } |
| |
| void security_audit_rule_free(void *lsmrule) |
| { |
| security_ops->audit_rule_free(lsmrule); |
| } |
| |
| int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, |
| struct audit_context *actx) |
| { |
| return security_ops->audit_rule_match(secid, field, op, lsmrule, actx); |
| } |
| |
| #endif /* CONFIG_AUDIT */ |