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security.c
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/*
* Security plug functions
*
* Copyright (C) 2001 WireX Communications, Inc <[email protected]>
* Copyright (C) 2001-2002 Greg Kroah-Hartman <[email protected]>
* Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]>
*
* 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/lsm_hooks.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
/* Maximum number of letters for an LSM name string */
#define SECURITY_NAME_MAX 10
/* Boot-time LSM user choice */
static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
CONFIG_DEFAULT_SECURITY;
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)
{
pr_info("Security Framework initialized\n");
/*
* Load minor LSMs, with the capability module always first.
*/
capability_add_hooks();
yama_add_hooks();
/*
* Load all the remaining security modules.
*/
do_security_initcalls();
return 0;
}
/* 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 ?
* @module: the name of the module
*
* 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(const char *module)
{
return !strcmp(module, chosen_lsm);
}
/*
* Hook list operation macros.
*
* call_void_hook:
* This is a hook that does not return a value.
*
* call_int_hook:
* This is a hook that returns a value.
*/
#define call_void_hook(FUNC, ...) \
do { \
struct security_hook_list *P; \
\
list_for_each_entry(P, &security_hook_heads.FUNC, list) \
P->hook.FUNC(__VA_ARGS__); \
} while (0)
#define call_int_hook(FUNC, IRC, ...) ({ \
int RC = IRC; \
do { \
struct security_hook_list *P; \
\
list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
RC = P->hook.FUNC(__VA_ARGS__); \
if (RC != 0) \
break; \
} \
} while (0); \
RC; \
})
/* Security operations */
int security_binder_set_context_mgr(struct task_struct *mgr)
{
return call_int_hook(binder_set_context_mgr, 0, mgr);
}
int security_binder_transaction(struct task_struct *from,
struct task_struct *to)
{
return call_int_hook(binder_transaction, 0, from, to);
}
int security_binder_transfer_binder(struct task_struct *from,
struct task_struct *to)
{
return call_int_hook(binder_transfer_binder, 0, from, to);
}
int security_binder_transfer_file(struct task_struct *from,
struct task_struct *to, struct file *file)
{
return call_int_hook(binder_transfer_file, 0, from, to, file);
}
int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
{
return call_int_hook(ptrace_access_check, 0, child, mode);
}
int security_ptrace_traceme(struct task_struct *parent)
{
return call_int_hook(ptrace_traceme, 0, parent);
}
int security_capget(struct task_struct *target,
kernel_cap_t *effective,
kernel_cap_t *inheritable,
kernel_cap_t *permitted)
{
return call_int_hook(capget, 0, 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 call_int_hook(capset, 0, new, old,
effective, inheritable, permitted);
}
int security_capable(const struct cred *cred, struct user_namespace *ns,
int cap)
{
return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
}
int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
int cap)
{
return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
}
int security_quotactl(int cmds, int type, int id, struct super_block *sb)
{
return call_int_hook(quotactl, 0, cmds, type, id, sb);
}
int security_quota_on(struct dentry *dentry)
{
return call_int_hook(quota_on, 0, dentry);
}
int security_syslog(int type)
{
return call_int_hook(syslog, 0, type);
}
int security_settime(const struct timespec *ts, const struct timezone *tz)
{
return call_int_hook(settime, 0, ts, tz);
}
int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
{
struct security_hook_list *hp;
int cap_sys_admin = 1;
int rc;
/*
* The module will respond with a positive value if
* it thinks the __vm_enough_memory() call should be
* made with the cap_sys_admin set. If all of the modules
* agree that it should be set it will. If any module
* thinks it should not be set it won't.
*/
list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
rc = hp->hook.vm_enough_memory(mm, pages);
if (rc <= 0) {
cap_sys_admin = 0;
break;
}
}
return __vm_enough_memory(mm, pages, cap_sys_admin);
}
int security_bprm_set_creds(struct linux_binprm *bprm)
{
return call_int_hook(bprm_set_creds, 0, bprm);
}
int security_bprm_check(struct linux_binprm *bprm)
{
int ret;
ret = call_int_hook(bprm_check_security, 0, bprm);
if (ret)
return ret;
return ima_bprm_check(bprm);
}
void security_bprm_committing_creds(struct linux_binprm *bprm)
{
call_void_hook(bprm_committing_creds, bprm);
}
void security_bprm_committed_creds(struct linux_binprm *bprm)
{
call_void_hook(bprm_committed_creds, bprm);
}
int security_bprm_secureexec(struct linux_binprm *bprm)
{
return call_int_hook(bprm_secureexec, 0, bprm);
}
int security_sb_alloc(struct super_block *sb)
{
return call_int_hook(sb_alloc_security, 0, sb);
}
void security_sb_free(struct super_block *sb)
{
call_void_hook(sb_free_security, sb);
}
int security_sb_copy_data(char *orig, char *copy)
{
return call_int_hook(sb_copy_data, 0, orig, copy);
}
EXPORT_SYMBOL(security_sb_copy_data);
int security_sb_remount(struct super_block *sb, void *data)
{
return call_int_hook(sb_remount, 0, sb, data);
}
int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
{
return call_int_hook(sb_kern_mount, 0, sb, flags, data);
}
int security_sb_show_options(struct seq_file *m, struct super_block *sb)
{
return call_int_hook(sb_show_options, 0, m, sb);
}
int security_sb_statfs(struct dentry *dentry)
{
return call_int_hook(sb_statfs, 0, dentry);
}
int security_sb_mount(const char *dev_name, struct path *path,
const char *type, unsigned long flags, void *data)
{
return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
}
int security_sb_umount(struct vfsmount *mnt, int flags)
{
return call_int_hook(sb_umount, 0, mnt, flags);
}
int security_sb_pivotroot(struct path *old_path, struct path *new_path)
{
return call_int_hook(sb_pivotroot, 0, 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 call_int_hook(sb_set_mnt_opts,
opts->num_mnt_opts ? -EOPNOTSUPP : 0, 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 call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb);
}
EXPORT_SYMBOL(security_sb_clone_mnt_opts);
int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
{
return call_int_hook(sb_parse_opts_str, 0, options, opts);
}
EXPORT_SYMBOL(security_sb_parse_opts_str);
int security_inode_alloc(struct inode *inode)
{
inode->i_security = NULL;
return call_int_hook(inode_alloc_security, 0, inode);
}
void security_inode_free(struct inode *inode)
{
integrity_inode_free(inode);
call_void_hook(inode_free_security, inode);
}
int security_dentry_init_security(struct dentry *dentry, int mode,
struct qstr *name, void **ctx,
u32 *ctxlen)
{
return call_int_hook(dentry_init_security, -EOPNOTSUPP, 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 call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
dir, qstr, NULL, NULL, NULL);
memset(new_xattrs, 0, sizeof(new_xattrs));
lsm_xattr = new_xattrs;
ret = call_int_hook(inode_init_security, -EOPNOTSUPP, 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 call_int_hook(inode_init_security, -EOPNOTSUPP, 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 call_int_hook(path_mknod, 0, 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 call_int_hook(path_mkdir, 0, 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 call_int_hook(path_rmdir, 0, dir, dentry);
}
int security_path_unlink(struct path *dir, struct dentry *dentry)
{
if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
return 0;
return call_int_hook(path_unlink, 0, 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 call_int_hook(path_symlink, 0, dir, dentry, old_name);
}
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 call_int_hook(path_link, 0, 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,
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 = call_int_hook(path_rename, 0, new_dir, new_dentry,
old_dir, old_dentry);
if (err)
return err;
}
return call_int_hook(path_rename, 0, 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 call_int_hook(path_truncate, 0, path);
}
int security_path_chmod(struct path *path, umode_t mode)
{
if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
return 0;
return call_int_hook(path_chmod, 0, path, mode);
}
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 call_int_hook(path_chown, 0, path, uid, gid);
}
EXPORT_SYMBOL(security_path_chown);
int security_path_chroot(struct path *path)
{
return call_int_hook(path_chroot, 0, path);
}
#endif
int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
{
if (unlikely(IS_PRIVATE(dir)))
return 0;
return call_int_hook(inode_create, 0, 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 call_int_hook(inode_link, 0, 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 call_int_hook(inode_unlink, 0, dir, dentry);
}
int security_inode_symlink(struct inode *dir, struct dentry *dentry,
const char *old_name)
{
if (unlikely(IS_PRIVATE(dir)))
return 0;
return call_int_hook(inode_symlink, 0, 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 call_int_hook(inode_mkdir, 0, 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 call_int_hook(inode_rmdir, 0, 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 call_int_hook(inode_mknod, 0, 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 = call_int_hook(inode_rename, 0, new_dir, new_dentry,
old_dir, old_dentry);
if (err)
return err;
}
return call_int_hook(inode_rename, 0, 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 call_int_hook(inode_readlink, 0, dentry);
}
int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
bool rcu)
{
if (unlikely(IS_PRIVATE(inode)))
return 0;
return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
}
int security_inode_permission(struct inode *inode, int mask)
{
if (unlikely(IS_PRIVATE(inode)))
return 0;
return call_int_hook(inode_permission, 0, inode, mask);
}
int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
{
int ret;
if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
return 0;
ret = call_int_hook(inode_setattr, 0, 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 call_int_hook(inode_getattr, 0, 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;
/*
* SELinux and Smack integrate the cap call,
* so assume that all LSMs supplying this call do so.
*/
ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
flags);
if (ret == 1)
ret = cap_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;
call_void_hook(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 call_int_hook(inode_getxattr, 0, dentry, name);
}
int security_inode_listxattr(struct dentry *dentry)
{
if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
return 0;
return call_int_hook(inode_listxattr, 0, dentry);
}
int security_inode_removexattr(struct dentry *dentry, const char *name)
{
int ret;
if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
return 0;
/*
* SELinux and Smack integrate the cap call,
* so assume that all LSMs supplying this call do so.
*/
ret = call_int_hook(inode_removexattr, 1, dentry, name);
if (ret == 1)
ret = cap_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 call_int_hook(inode_need_killpriv, 0, dentry);
}
int security_inode_killpriv(struct dentry *dentry)
{
return call_int_hook(inode_killpriv, 0, dentry);
}
int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
{
if (unlikely(IS_PRIVATE(inode)))
return -EOPNOTSUPP;
return call_int_hook(inode_getsecurity, -EOPNOTSUPP, 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 call_int_hook(inode_setsecurity, -EOPNOTSUPP, 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 call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
}
EXPORT_SYMBOL(security_inode_listsecurity);
void security_inode_getsecid(const struct inode *inode, u32 *secid)
{
call_void_hook(inode_getsecid, inode, secid);
}
int security_file_permission(struct file *file, int mask)
{
int ret;
ret = call_int_hook(file_permission, 0, file, mask);
if (ret)
return ret;
return fsnotify_perm(file, mask);
}
int security_file_alloc(struct file *file)
{
return call_int_hook(file_alloc_security, 0, file);
}
void security_file_free(struct file *file)
{
call_void_hook(file_free_security, file);
}
int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
return call_int_hook(file_ioctl, 0, 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 (!path_noexec(&file->f_path)) {
#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 = call_int_hook(mmap_file, 0, 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 call_int_hook(mmap_addr, 0, addr);
}
int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
unsigned long prot)
{
return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
}
int security_file_lock(struct file *file, unsigned int cmd)
{
return call_int_hook(file_lock, 0, file, cmd);
}
int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
{
return call_int_hook(file_fcntl, 0, file, cmd, arg);
}
void security_file_set_fowner(struct file *file)
{
call_void_hook(file_set_fowner, file);
}
int security_file_send_sigiotask(struct task_struct *tsk,
struct fown_struct *fown, int sig)
{
return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
}
int security_file_receive(struct file *file)
{
return call_int_hook(file_receive, 0, file);
}
int security_file_open(struct file *file, const struct cred *cred)
{
int ret;
ret = call_int_hook(file_open, 0, file, cred);
if (ret)
return ret;
return fsnotify_perm(file, MAY_OPEN);
}
int security_task_create(unsigned long clone_flags)
{
return call_int_hook(task_create, 0, clone_flags);
}
void security_task_free(struct task_struct *task)
{
call_void_hook(task_free, task);
}
int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
{
return call_int_hook(cred_alloc_blank, 0, cred, gfp);
}
void security_cred_free(struct cred *cred)
{
call_void_hook(cred_free, cred);
}
int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
{
return call_int_hook(cred_prepare, 0, new, old, gfp);
}
void security_transfer_creds(struct cred *new, const struct cred *old)
{
call_void_hook(cred_transfer, new, old);
}
int security_kernel_act_as(struct cred *new, u32 secid)
{
return call_int_hook(kernel_act_as, 0, new, secid);
}
int security_kernel_create_files_as(struct cred *new, struct inode *inode)
{
return call_int_hook(kernel_create_files_as, 0, new, inode);
}
int security_kernel_fw_from_file(struct file *file, char *buf, size_t size)
{
int ret;
ret = call_int_hook(kernel_fw_from_file, 0, 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 call_int_hook(kernel_module_request, 0, kmod_name);
}
int security_kernel_module_from_file(struct file *file)
{
int ret;
ret = call_int_hook(kernel_module_from_file, 0, 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 call_int_hook(task_fix_setuid, 0, new, old, flags);
}
int security_task_setpgid(struct task_struct *p, pid_t pgid)
{
return call_int_hook(task_setpgid, 0, p, pgid);
}
int security_task_getpgid(struct task_struct *p)
{
return call_int_hook(task_getpgid, 0, p);
}
int security_task_getsid(struct task_struct *p)
{
return call_int_hook(task_getsid, 0, p);
}
void security_task_getsecid(struct task_struct *p, u32 *secid)
{
*secid = 0;
call_void_hook(task_getsecid, p, secid);
}
EXPORT_SYMBOL(security_task_getsecid);
int security_task_setnice(struct task_struct *p, int nice)
{
return call_int_hook(task_setnice, 0, p, nice);
}
int security_task_setioprio(struct task_struct *p, int ioprio)
{
return call_int_hook(task_setioprio, 0, p, ioprio);
}
int security_task_getioprio(struct task_struct *p)
{
return call_int_hook(task_getioprio, 0, p);
}
int security_task_setrlimit(struct task_struct *p, unsigned int resource,
struct rlimit *new_rlim)
{
return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
}
int security_task_setscheduler(struct task_struct *p)
{
return call_int_hook(task_setscheduler, 0, p);
}
int security_task_getscheduler(struct task_struct *p)
{
return call_int_hook(task_getscheduler, 0, p);
}
int security_task_movememory(struct task_struct *p)
{
return call_int_hook(task_movememory, 0, p);
}
int security_task_kill(struct task_struct *p, struct siginfo *info,
int sig, u32 secid)
{
return call_int_hook(task_kill, 0, p, info, sig, secid);
}
int security_task_wait(struct task_struct *p)
{
return call_int_hook(task_wait, 0, p);
}
int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5)
{
int thisrc;
int rc = -ENOSYS;
struct security_hook_list *hp;
list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
if (thisrc != -ENOSYS) {
rc = thisrc;
if (thisrc != 0)