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-rw-r--r--security/security.c1501
1 files changed, 1501 insertions, 0 deletions
diff --git a/security/security.c b/security/security.c
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index 000000000..c1c7cd19a
--- /dev/null
+++ b/security/security.c
@@ -0,0 +1,1501 @@
+/*
+ * 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/dcache.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,
+ unsigned long kern_flags,
+ unsigned long *set_kern_flags)
+{
+ return security_ops->sb_set_mnt_opts(sb, opts, kern_flags,
+ set_kern_flags);
+}
+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_dentry_init_security(struct dentry *dentry, int mode,
+ struct qstr *name, void **ctx,
+ u32 *ctxlen)
+{
+ return security_ops->dentry_init_security(dentry, mode, name,
+ ctx, ctxlen);
+}
+EXPORT_SYMBOL(security_dentry_init_security);
+
+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;
+
+ if (!initxattrs)
+ return security_ops->inode_init_security(inode, dir, qstr,
+ NULL, NULL, NULL);
+ memset(new_xattrs, 0, sizeof(new_xattrs));
+ 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->value != NULL; xattr++)
+ 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, const 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(d_backing_inode(dir->dentry))))
+ 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(d_backing_inode(dir->dentry))))
+ 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(d_backing_inode(dir->dentry))))
+ return 0;
+ return security_ops->path_rmdir(dir, dentry);
+}
+EXPORT_SYMBOL(security_path_rmdir);
+
+int security_path_unlink(struct path *dir, struct dentry *dentry)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
+ 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(d_backing_inode(dir->dentry))))
+ return 0;
+ return security_ops->path_symlink(dir, dentry, old_name);
+}
+EXPORT_SYMBOL(security_path_symlink);
+
+int security_path_link(struct dentry *old_dentry, struct path *new_dir,
+ struct dentry *new_dentry)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
+ return 0;
+ return security_ops->path_link(old_dentry, new_dir, new_dentry);
+}
+EXPORT_SYMBOL(security_path_link);
+
+int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
+ struct path *new_dir, struct dentry *new_dentry,
+ unsigned int flags)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
+ (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
+ return 0;
+
+ if (flags & RENAME_EXCHANGE) {
+ int err = security_ops->path_rename(new_dir, new_dentry,
+ old_dir, old_dentry);
+ if (err)
+ return err;
+ }
+
+ 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(d_backing_inode(path->dentry))))
+ return 0;
+ return security_ops->path_truncate(path);
+}
+EXPORT_SYMBOL(security_path_truncate);
+
+int security_path_chmod(struct path *path, umode_t mode)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
+ return 0;
+ return security_ops->path_chmod(path, mode);
+}
+EXPORT_SYMBOL(security_path_chmod);
+
+int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
+ return 0;
+ return security_ops->path_chown(path, uid, gid);
+}
+EXPORT_SYMBOL(security_path_chown);
+
+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_link(struct dentry *old_dentry, struct inode *dir,
+ struct dentry *new_dentry)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
+ 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(d_backing_inode(dentry))))
+ 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(d_backing_inode(dentry))))
+ 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,
+ unsigned int flags)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
+ (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
+ return 0;
+
+ if (flags & RENAME_EXCHANGE) {
+ int err = security_ops->inode_rename(new_dir, new_dentry,
+ old_dir, old_dentry);
+ if (err)
+ return err;
+ }
+
+ return security_ops->inode_rename(old_dir, old_dentry,
+ new_dir, new_dentry);
+}
+
+int security_inode_readlink(struct dentry *dentry)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
+ return 0;
+ return security_ops->inode_readlink(dentry);
+}
+EXPORT_SYMBOL(security_inode_readlink);
+
+int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
+ 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);
+}
+EXPORT_SYMBOL(security_inode_permission);
+
+int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ int ret;
+
+ if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
+ 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(const struct path *path)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
+ return 0;
+ return security_ops->inode_getattr(path);
+}
+
+int security_inode_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags)
+{
+ int ret;
+
+ if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
+ 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(d_backing_inode(dentry))))
+ 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(d_backing_inode(dentry))))
+ return 0;
+ return security_ops->inode_getxattr(dentry, name);
+}
+
+int security_inode_listxattr(struct dentry *dentry)
+{
+ if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
+ return 0;
+ return security_ops->inode_listxattr(dentry);
+}
+
+int security_inode_removexattr(struct dentry *dentry, const char *name)
+{
+ int ret;
+
+ if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
+ 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);
+}
+EXPORT_SYMBOL(security_inode_listsecurity);
+
+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);
+}
+EXPORT_SYMBOL(security_file_permission);
+
+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
+ * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
+ */
+ if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) {
+#ifndef CONFIG_MMU
+ if (file->f_op->mmap_capabilities) {
+ unsigned caps = file->f_op->mmap_capabilities(file);
+ if (!(caps & NOMMU_MAP_EXEC))
+ 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);
+}
+EXPORT_SYMBOL(security_mmap_file);
+
+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);
+}
+
+void security_file_set_fowner(struct file *file)
+{
+ 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_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_fw_from_file(struct file *file, char *buf, size_t size)
+{
+ int ret;
+
+ ret = security_ops->kernel_fw_from_file(file, buf, size);
+ if (ret)
+ return ret;
+ return ima_fw_from_file(file, buf, size);
+}
+EXPORT_SYMBOL_GPL(security_kernel_fw_from_file);
+
+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_ismaclabel(const char *name)
+{
+ return security_ops->ismaclabel(name);
+}
+EXPORT_SYMBOL(security_ismaclabel);
+
+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);
+
+#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,
+ gfp_t gfp)
+{
+ return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx, gfp);
+}
+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(x, sec_ctx);
+}
+EXPORT_SYMBOL(security_xfrm_state_alloc);
+
+int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
+ struct xfrm_sec_ctx *polsec, u32 secid)
+{
+ return security_ops->xfrm_state_alloc_acquire(x, polsec, 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, unsigned 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 */