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0b4d3452b8
When an NFSv4 client performs a mount operation, it first mounts the NFSv4 root and then does path walk to the exported path and performs a submount on that, cloning the security mount options from the root's superblock to the submount's superblock in the process. Unless the NFS server has an explicit fsid=0 export with the "security_label" option, the NFSv4 root superblock will not have SBLABEL_MNT set, and neither will the submount superblock after cloning the security mount options. As a result, setxattr's of security labels over NFSv4.2 will fail. In a similar fashion, NFSv4.2 mounts mounted with the context= mount option will not show the correct labels because the nfs_server->caps flags of the cloned superblock will still have NFS_CAP_SECURITY_LABEL set. Allowing the NFSv4 client to enable or disable SECURITY_LSM_NATIVE_LABELS behavior will ensure that the SBLABEL_MNT flag has the correct value when the client traverses from an exported path without the "security_label" option to one with the "security_label" option and vice versa. Similarly, checking to see if SECURITY_LSM_NATIVE_LABELS is set upon return from security_sb_clone_mnt_opts() and clearing NFS_CAP_SECURITY_LABEL if necessary will allow the correct labels to be displayed for NFSv4.2 mounts mounted with the context= mount option. Resolves: https://github.com/SELinuxProject/selinux-kernel/issues/35 Signed-off-by: Scott Mayhew <smayhew@redhat.com> Reviewed-by: Stephen Smalley <sds@tycho.nsa.gov> Tested-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
1716 lines
43 KiB
C
1716 lines
43 KiB
C
/*
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* Security plug functions
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*
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* Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
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* Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
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* Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
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* Copyright (C) 2016 Mellanox Technologies
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/capability.h>
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#include <linux/dcache.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/lsm_hooks.h>
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#include <linux/integrity.h>
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#include <linux/ima.h>
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#include <linux/evm.h>
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#include <linux/fsnotify.h>
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#include <linux/mman.h>
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#include <linux/mount.h>
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#include <linux/personality.h>
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#include <linux/backing-dev.h>
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#include <linux/string.h>
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#include <net/flow.h>
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#define MAX_LSM_EVM_XATTR 2
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/* Maximum number of letters for an LSM name string */
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#define SECURITY_NAME_MAX 10
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struct security_hook_heads security_hook_heads __lsm_ro_after_init;
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static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
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char *lsm_names;
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/* Boot-time LSM user choice */
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static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
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CONFIG_DEFAULT_SECURITY;
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static void __init do_security_initcalls(void)
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{
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initcall_t *call;
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call = __security_initcall_start;
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while (call < __security_initcall_end) {
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(*call) ();
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call++;
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}
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}
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/**
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* security_init - initializes the security framework
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*
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* This should be called early in the kernel initialization sequence.
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*/
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int __init security_init(void)
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{
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int i;
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struct list_head *list = (struct list_head *) &security_hook_heads;
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for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head);
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i++)
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INIT_LIST_HEAD(&list[i]);
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pr_info("Security Framework initialized\n");
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/*
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* Load minor LSMs, with the capability module always first.
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*/
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capability_add_hooks();
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yama_add_hooks();
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loadpin_add_hooks();
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/*
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* Load all the remaining security modules.
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*/
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do_security_initcalls();
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return 0;
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}
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/* Save user chosen LSM */
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static int __init choose_lsm(char *str)
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{
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strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
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return 1;
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}
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__setup("security=", choose_lsm);
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static bool match_last_lsm(const char *list, const char *lsm)
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{
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const char *last;
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if (WARN_ON(!list || !lsm))
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return false;
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last = strrchr(list, ',');
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if (last)
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/* Pass the comma, strcmp() will check for '\0' */
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last++;
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else
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last = list;
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return !strcmp(last, lsm);
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}
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static int lsm_append(char *new, char **result)
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{
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char *cp;
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if (*result == NULL) {
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*result = kstrdup(new, GFP_KERNEL);
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} else {
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/* Check if it is the last registered name */
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if (match_last_lsm(*result, new))
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return 0;
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cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
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if (cp == NULL)
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return -ENOMEM;
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kfree(*result);
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*result = cp;
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}
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return 0;
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}
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/**
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* security_module_enable - Load given security module on boot ?
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* @module: the name of the module
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*
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* Each LSM must pass this method before registering its own operations
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* to avoid security registration races. This method may also be used
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* to check if your LSM is currently loaded during kernel initialization.
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*
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* Returns:
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*
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* true if:
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*
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* - The passed LSM is the one chosen by user at boot time,
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* - or the passed LSM is configured as the default and the user did not
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* choose an alternate LSM at boot time.
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*
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* Otherwise, return false.
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*/
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int __init security_module_enable(const char *module)
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{
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return !strcmp(module, chosen_lsm);
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}
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/**
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* security_add_hooks - Add a modules hooks to the hook lists.
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* @hooks: the hooks to add
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* @count: the number of hooks to add
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* @lsm: the name of the security module
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*
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* Each LSM has to register its hooks with the infrastructure.
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*/
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void __init security_add_hooks(struct security_hook_list *hooks, int count,
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char *lsm)
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{
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int i;
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for (i = 0; i < count; i++) {
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hooks[i].lsm = lsm;
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list_add_tail_rcu(&hooks[i].list, hooks[i].head);
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}
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if (lsm_append(lsm, &lsm_names) < 0)
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panic("%s - Cannot get early memory.\n", __func__);
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}
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int call_lsm_notifier(enum lsm_event event, void *data)
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{
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return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
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}
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EXPORT_SYMBOL(call_lsm_notifier);
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int register_lsm_notifier(struct notifier_block *nb)
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{
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return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
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}
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EXPORT_SYMBOL(register_lsm_notifier);
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int unregister_lsm_notifier(struct notifier_block *nb)
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{
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return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
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}
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EXPORT_SYMBOL(unregister_lsm_notifier);
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/*
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* Hook list operation macros.
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*
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* call_void_hook:
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* This is a hook that does not return a value.
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*
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* call_int_hook:
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* This is a hook that returns a value.
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*/
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#define call_void_hook(FUNC, ...) \
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do { \
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struct security_hook_list *P; \
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\
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list_for_each_entry(P, &security_hook_heads.FUNC, list) \
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P->hook.FUNC(__VA_ARGS__); \
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} while (0)
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#define call_int_hook(FUNC, IRC, ...) ({ \
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int RC = IRC; \
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do { \
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struct security_hook_list *P; \
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\
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list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
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RC = P->hook.FUNC(__VA_ARGS__); \
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if (RC != 0) \
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break; \
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} \
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} while (0); \
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RC; \
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})
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/* Security operations */
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int security_binder_set_context_mgr(struct task_struct *mgr)
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{
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return call_int_hook(binder_set_context_mgr, 0, mgr);
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}
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int security_binder_transaction(struct task_struct *from,
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struct task_struct *to)
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{
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return call_int_hook(binder_transaction, 0, from, to);
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}
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int security_binder_transfer_binder(struct task_struct *from,
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struct task_struct *to)
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{
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return call_int_hook(binder_transfer_binder, 0, from, to);
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}
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int security_binder_transfer_file(struct task_struct *from,
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struct task_struct *to, struct file *file)
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{
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return call_int_hook(binder_transfer_file, 0, from, to, file);
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}
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int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
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{
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return call_int_hook(ptrace_access_check, 0, child, mode);
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}
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int security_ptrace_traceme(struct task_struct *parent)
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{
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return call_int_hook(ptrace_traceme, 0, parent);
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}
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int security_capget(struct task_struct *target,
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kernel_cap_t *effective,
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kernel_cap_t *inheritable,
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kernel_cap_t *permitted)
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{
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return call_int_hook(capget, 0, target,
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effective, inheritable, permitted);
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}
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int security_capset(struct cred *new, const struct cred *old,
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const kernel_cap_t *effective,
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const kernel_cap_t *inheritable,
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const kernel_cap_t *permitted)
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{
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return call_int_hook(capset, 0, new, old,
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effective, inheritable, permitted);
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}
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int security_capable(const struct cred *cred, struct user_namespace *ns,
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int cap)
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{
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return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
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}
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int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
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int cap)
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{
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return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
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}
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int security_quotactl(int cmds, int type, int id, struct super_block *sb)
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{
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return call_int_hook(quotactl, 0, cmds, type, id, sb);
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}
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int security_quota_on(struct dentry *dentry)
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{
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return call_int_hook(quota_on, 0, dentry);
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}
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int security_syslog(int type)
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{
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return call_int_hook(syslog, 0, type);
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}
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int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
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{
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return call_int_hook(settime, 0, ts, tz);
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}
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int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
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{
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struct security_hook_list *hp;
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int cap_sys_admin = 1;
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int rc;
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/*
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* The module will respond with a positive value if
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* it thinks the __vm_enough_memory() call should be
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* made with the cap_sys_admin set. If all of the modules
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* agree that it should be set it will. If any module
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* thinks it should not be set it won't.
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*/
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list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
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rc = hp->hook.vm_enough_memory(mm, pages);
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if (rc <= 0) {
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cap_sys_admin = 0;
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break;
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}
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}
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return __vm_enough_memory(mm, pages, cap_sys_admin);
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}
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int security_bprm_set_creds(struct linux_binprm *bprm)
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{
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return call_int_hook(bprm_set_creds, 0, bprm);
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}
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int security_bprm_check(struct linux_binprm *bprm)
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{
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int ret;
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ret = call_int_hook(bprm_check_security, 0, bprm);
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if (ret)
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return ret;
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return ima_bprm_check(bprm);
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}
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void security_bprm_committing_creds(struct linux_binprm *bprm)
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{
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call_void_hook(bprm_committing_creds, bprm);
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}
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void security_bprm_committed_creds(struct linux_binprm *bprm)
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{
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call_void_hook(bprm_committed_creds, bprm);
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}
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int security_bprm_secureexec(struct linux_binprm *bprm)
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{
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return call_int_hook(bprm_secureexec, 0, bprm);
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}
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int security_sb_alloc(struct super_block *sb)
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{
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return call_int_hook(sb_alloc_security, 0, sb);
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}
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void security_sb_free(struct super_block *sb)
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{
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call_void_hook(sb_free_security, sb);
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}
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int security_sb_copy_data(char *orig, char *copy)
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{
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return call_int_hook(sb_copy_data, 0, orig, copy);
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}
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EXPORT_SYMBOL(security_sb_copy_data);
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int security_sb_remount(struct super_block *sb, void *data)
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{
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return call_int_hook(sb_remount, 0, sb, data);
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}
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int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
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{
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return call_int_hook(sb_kern_mount, 0, sb, flags, data);
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}
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int security_sb_show_options(struct seq_file *m, struct super_block *sb)
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{
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return call_int_hook(sb_show_options, 0, m, sb);
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}
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int security_sb_statfs(struct dentry *dentry)
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{
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return call_int_hook(sb_statfs, 0, dentry);
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}
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int security_sb_mount(const char *dev_name, const struct path *path,
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const char *type, unsigned long flags, void *data)
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{
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return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
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}
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int security_sb_umount(struct vfsmount *mnt, int flags)
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{
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return call_int_hook(sb_umount, 0, mnt, flags);
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}
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int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
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{
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return call_int_hook(sb_pivotroot, 0, old_path, new_path);
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}
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int security_sb_set_mnt_opts(struct super_block *sb,
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struct security_mnt_opts *opts,
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unsigned long kern_flags,
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unsigned long *set_kern_flags)
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{
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return call_int_hook(sb_set_mnt_opts,
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opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
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opts, kern_flags, set_kern_flags);
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}
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EXPORT_SYMBOL(security_sb_set_mnt_opts);
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int security_sb_clone_mnt_opts(const struct super_block *oldsb,
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struct super_block *newsb,
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unsigned long kern_flags,
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unsigned long *set_kern_flags)
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{
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return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
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kern_flags, set_kern_flags);
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}
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EXPORT_SYMBOL(security_sb_clone_mnt_opts);
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int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
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{
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return call_int_hook(sb_parse_opts_str, 0, options, opts);
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}
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EXPORT_SYMBOL(security_sb_parse_opts_str);
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int security_inode_alloc(struct inode *inode)
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{
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inode->i_security = NULL;
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return call_int_hook(inode_alloc_security, 0, inode);
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}
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void security_inode_free(struct inode *inode)
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{
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integrity_inode_free(inode);
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call_void_hook(inode_free_security, inode);
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}
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int security_dentry_init_security(struct dentry *dentry, int mode,
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const struct qstr *name, void **ctx,
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u32 *ctxlen)
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{
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return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
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name, ctx, ctxlen);
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}
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EXPORT_SYMBOL(security_dentry_init_security);
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|
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int security_dentry_create_files_as(struct dentry *dentry, int mode,
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struct qstr *name,
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const struct cred *old, struct cred *new)
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{
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return call_int_hook(dentry_create_files_as, 0, dentry, mode,
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name, old, new);
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}
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EXPORT_SYMBOL(security_dentry_create_files_as);
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int security_inode_init_security(struct inode *inode, struct inode *dir,
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const struct qstr *qstr,
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const initxattrs initxattrs, void *fs_data)
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{
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struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
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struct xattr *lsm_xattr, *evm_xattr, *xattr;
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int ret;
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|
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if (unlikely(IS_PRIVATE(inode)))
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return 0;
|
|
|
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if (!initxattrs)
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return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
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dir, qstr, NULL, NULL, NULL);
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memset(new_xattrs, 0, sizeof(new_xattrs));
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lsm_xattr = new_xattrs;
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ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
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&lsm_xattr->name,
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&lsm_xattr->value,
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&lsm_xattr->value_len);
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if (ret)
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goto out;
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|
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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(const 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(const 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(const 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(const 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(const 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, const 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(const struct path *old_dir, struct dentry *old_dentry,
|
|
const 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(const 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(const 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(const 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);
|
|
}
|
|
|
|
int security_path_chroot(const 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(struct inode *inode, const char *name, void **buffer, bool alloc)
|
|
{
|
|
struct security_hook_list *hp;
|
|
int rc;
|
|
|
|
if (unlikely(IS_PRIVATE(inode)))
|
|
return -EOPNOTSUPP;
|
|
/*
|
|
* Only one module will provide an attribute with a given name.
|
|
*/
|
|
list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
|
|
rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
|
|
if (rc != -EOPNOTSUPP)
|
|
return rc;
|
|
}
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
|
|
{
|
|
struct security_hook_list *hp;
|
|
int rc;
|
|
|
|
if (unlikely(IS_PRIVATE(inode)))
|
|
return -EOPNOTSUPP;
|
|
/*
|
|
* Only one module will provide an attribute with a given name.
|
|
*/
|
|
list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
|
|
rc = hp->hook.inode_setsecurity(inode, name, value, size,
|
|
flags);
|
|
if (rc != -EOPNOTSUPP)
|
|
return rc;
|
|
}
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
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(struct inode *inode, u32 *secid)
|
|
{
|
|
call_void_hook(inode_getsecid, inode, secid);
|
|
}
|
|
|
|
int security_inode_copy_up(struct dentry *src, struct cred **new)
|
|
{
|
|
return call_int_hook(inode_copy_up, 0, src, new);
|
|
}
|
|
EXPORT_SYMBOL(security_inode_copy_up);
|
|
|
|
int security_inode_copy_up_xattr(const char *name)
|
|
{
|
|
return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
|
|
}
|
|
EXPORT_SYMBOL(security_inode_copy_up_xattr);
|
|
|
|
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);
|
|
}
|
|
|
|
int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
|
|
{
|
|
return call_int_hook(task_alloc, 0, task, 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_module_request(char *kmod_name)
|
|
{
|
|
return call_int_hook(kernel_module_request, 0, kmod_name);
|
|
}
|
|
|
|
int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
|
|
{
|
|
int ret;
|
|
|
|
ret = call_int_hook(kernel_read_file, 0, file, id);
|
|
if (ret)
|
|
return ret;
|
|
return ima_read_file(file, id);
|
|
}
|
|
EXPORT_SYMBOL_GPL(security_kernel_read_file);
|
|
|
|
int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
|
|
enum kernel_read_file_id id)
|
|
{
|
|
int ret;
|
|
|
|
ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
|
|
if (ret)
|
|
return ret;
|
|
return ima_post_read_file(file, buf, size, id);
|
|
}
|
|
EXPORT_SYMBOL_GPL(security_kernel_post_read_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_prlimit(const struct cred *cred, const struct cred *tcred,
|
|
unsigned int flags)
|
|
{
|
|
return call_int_hook(task_prlimit, 0, cred, tcred, flags);
|
|
}
|
|
|
|
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_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)
|
|
break;
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
void security_task_to_inode(struct task_struct *p, struct inode *inode)
|
|
{
|
|
call_void_hook(task_to_inode, p, inode);
|
|
}
|
|
|
|
int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
|
|
{
|
|
return call_int_hook(ipc_permission, 0, ipcp, flag);
|
|
}
|
|
|
|
void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
|
|
{
|
|
*secid = 0;
|
|
call_void_hook(ipc_getsecid, ipcp, secid);
|
|
}
|
|
|
|
int security_msg_msg_alloc(struct msg_msg *msg)
|
|
{
|
|
return call_int_hook(msg_msg_alloc_security, 0, msg);
|
|
}
|
|
|
|
void security_msg_msg_free(struct msg_msg *msg)
|
|
{
|
|
call_void_hook(msg_msg_free_security, msg);
|
|
}
|
|
|
|
int security_msg_queue_alloc(struct msg_queue *msq)
|
|
{
|
|
return call_int_hook(msg_queue_alloc_security, 0, msq);
|
|
}
|
|
|
|
void security_msg_queue_free(struct msg_queue *msq)
|
|
{
|
|
call_void_hook(msg_queue_free_security, msq);
|
|
}
|
|
|
|
int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
|
|
{
|
|
return call_int_hook(msg_queue_associate, 0, msq, msqflg);
|
|
}
|
|
|
|
int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
|
|
{
|
|
return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
|
|
}
|
|
|
|
int security_msg_queue_msgsnd(struct msg_queue *msq,
|
|
struct msg_msg *msg, int msqflg)
|
|
{
|
|
return call_int_hook(msg_queue_msgsnd, 0, 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 call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
|
|
}
|
|
|
|
int security_shm_alloc(struct shmid_kernel *shp)
|
|
{
|
|
return call_int_hook(shm_alloc_security, 0, shp);
|
|
}
|
|
|
|
void security_shm_free(struct shmid_kernel *shp)
|
|
{
|
|
call_void_hook(shm_free_security, shp);
|
|
}
|
|
|
|
int security_shm_associate(struct shmid_kernel *shp, int shmflg)
|
|
{
|
|
return call_int_hook(shm_associate, 0, shp, shmflg);
|
|
}
|
|
|
|
int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
|
|
{
|
|
return call_int_hook(shm_shmctl, 0, shp, cmd);
|
|
}
|
|
|
|
int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
|
|
{
|
|
return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
|
|
}
|
|
|
|
int security_sem_alloc(struct sem_array *sma)
|
|
{
|
|
return call_int_hook(sem_alloc_security, 0, sma);
|
|
}
|
|
|
|
void security_sem_free(struct sem_array *sma)
|
|
{
|
|
call_void_hook(sem_free_security, sma);
|
|
}
|
|
|
|
int security_sem_associate(struct sem_array *sma, int semflg)
|
|
{
|
|
return call_int_hook(sem_associate, 0, sma, semflg);
|
|
}
|
|
|
|
int security_sem_semctl(struct sem_array *sma, int cmd)
|
|
{
|
|
return call_int_hook(sem_semctl, 0, sma, cmd);
|
|
}
|
|
|
|
int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
|
|
unsigned nsops, int alter)
|
|
{
|
|
return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
|
|
}
|
|
|
|
void security_d_instantiate(struct dentry *dentry, struct inode *inode)
|
|
{
|
|
if (unlikely(inode && IS_PRIVATE(inode)))
|
|
return;
|
|
call_void_hook(d_instantiate, dentry, inode);
|
|
}
|
|
EXPORT_SYMBOL(security_d_instantiate);
|
|
|
|
int security_getprocattr(struct task_struct *p, char *name, char **value)
|
|
{
|
|
return call_int_hook(getprocattr, -EINVAL, p, name, value);
|
|
}
|
|
|
|
int security_setprocattr(const char *name, void *value, size_t size)
|
|
{
|
|
return call_int_hook(setprocattr, -EINVAL, name, value, size);
|
|
}
|
|
|
|
int security_netlink_send(struct sock *sk, struct sk_buff *skb)
|
|
{
|
|
return call_int_hook(netlink_send, 0, sk, skb);
|
|
}
|
|
|
|
int security_ismaclabel(const char *name)
|
|
{
|
|
return call_int_hook(ismaclabel, 0, name);
|
|
}
|
|
EXPORT_SYMBOL(security_ismaclabel);
|
|
|
|
int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
|
|
{
|
|
return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
|
|
seclen);
|
|
}
|
|
EXPORT_SYMBOL(security_secid_to_secctx);
|
|
|
|
int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
|
|
{
|
|
*secid = 0;
|
|
return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
|
|
}
|
|
EXPORT_SYMBOL(security_secctx_to_secid);
|
|
|
|
void security_release_secctx(char *secdata, u32 seclen)
|
|
{
|
|
call_void_hook(release_secctx, secdata, seclen);
|
|
}
|
|
EXPORT_SYMBOL(security_release_secctx);
|
|
|
|
void security_inode_invalidate_secctx(struct inode *inode)
|
|
{
|
|
call_void_hook(inode_invalidate_secctx, inode);
|
|
}
|
|
EXPORT_SYMBOL(security_inode_invalidate_secctx);
|
|
|
|
int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
|
|
{
|
|
return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
|
|
}
|
|
EXPORT_SYMBOL(security_inode_notifysecctx);
|
|
|
|
int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
|
|
{
|
|
return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
|
|
}
|
|
EXPORT_SYMBOL(security_inode_setsecctx);
|
|
|
|
int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
|
|
{
|
|
return call_int_hook(inode_getsecctx, -EOPNOTSUPP, 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 call_int_hook(unix_stream_connect, 0, sock, other, newsk);
|
|
}
|
|
EXPORT_SYMBOL(security_unix_stream_connect);
|
|
|
|
int security_unix_may_send(struct socket *sock, struct socket *other)
|
|
{
|
|
return call_int_hook(unix_may_send, 0, sock, other);
|
|
}
|
|
EXPORT_SYMBOL(security_unix_may_send);
|
|
|
|
int security_socket_create(int family, int type, int protocol, int kern)
|
|
{
|
|
return call_int_hook(socket_create, 0, family, type, protocol, kern);
|
|
}
|
|
|
|
int security_socket_post_create(struct socket *sock, int family,
|
|
int type, int protocol, int kern)
|
|
{
|
|
return call_int_hook(socket_post_create, 0, sock, family, type,
|
|
protocol, kern);
|
|
}
|
|
|
|
int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
|
|
{
|
|
return call_int_hook(socket_bind, 0, sock, address, addrlen);
|
|
}
|
|
|
|
int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
|
|
{
|
|
return call_int_hook(socket_connect, 0, sock, address, addrlen);
|
|
}
|
|
|
|
int security_socket_listen(struct socket *sock, int backlog)
|
|
{
|
|
return call_int_hook(socket_listen, 0, sock, backlog);
|
|
}
|
|
|
|
int security_socket_accept(struct socket *sock, struct socket *newsock)
|
|
{
|
|
return call_int_hook(socket_accept, 0, sock, newsock);
|
|
}
|
|
|
|
int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
|
|
{
|
|
return call_int_hook(socket_sendmsg, 0, sock, msg, size);
|
|
}
|
|
|
|
int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
|
|
int size, int flags)
|
|
{
|
|
return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
|
|
}
|
|
|
|
int security_socket_getsockname(struct socket *sock)
|
|
{
|
|
return call_int_hook(socket_getsockname, 0, sock);
|
|
}
|
|
|
|
int security_socket_getpeername(struct socket *sock)
|
|
{
|
|
return call_int_hook(socket_getpeername, 0, sock);
|
|
}
|
|
|
|
int security_socket_getsockopt(struct socket *sock, int level, int optname)
|
|
{
|
|
return call_int_hook(socket_getsockopt, 0, sock, level, optname);
|
|
}
|
|
|
|
int security_socket_setsockopt(struct socket *sock, int level, int optname)
|
|
{
|
|
return call_int_hook(socket_setsockopt, 0, sock, level, optname);
|
|
}
|
|
|
|
int security_socket_shutdown(struct socket *sock, int how)
|
|
{
|
|
return call_int_hook(socket_shutdown, 0, sock, how);
|
|
}
|
|
|
|
int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
|
|
{
|
|
return call_int_hook(socket_sock_rcv_skb, 0, 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 call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
|
|
optval, optlen, len);
|
|
}
|
|
|
|
int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
|
|
{
|
|
return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
|
|
skb, secid);
|
|
}
|
|
EXPORT_SYMBOL(security_socket_getpeersec_dgram);
|
|
|
|
int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
|
|
{
|
|
return call_int_hook(sk_alloc_security, 0, sk, family, priority);
|
|
}
|
|
|
|
void security_sk_free(struct sock *sk)
|
|
{
|
|
call_void_hook(sk_free_security, sk);
|
|
}
|
|
|
|
void security_sk_clone(const struct sock *sk, struct sock *newsk)
|
|
{
|
|
call_void_hook(sk_clone_security, sk, newsk);
|
|
}
|
|
EXPORT_SYMBOL(security_sk_clone);
|
|
|
|
void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
|
|
{
|
|
call_void_hook(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)
|
|
{
|
|
call_void_hook(req_classify_flow, req, fl);
|
|
}
|
|
EXPORT_SYMBOL(security_req_classify_flow);
|
|
|
|
void security_sock_graft(struct sock *sk, struct socket *parent)
|
|
{
|
|
call_void_hook(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 call_int_hook(inet_conn_request, 0, sk, skb, req);
|
|
}
|
|
EXPORT_SYMBOL(security_inet_conn_request);
|
|
|
|
void security_inet_csk_clone(struct sock *newsk,
|
|
const struct request_sock *req)
|
|
{
|
|
call_void_hook(inet_csk_clone, newsk, req);
|
|
}
|
|
|
|
void security_inet_conn_established(struct sock *sk,
|
|
struct sk_buff *skb)
|
|
{
|
|
call_void_hook(inet_conn_established, sk, skb);
|
|
}
|
|
|
|
int security_secmark_relabel_packet(u32 secid)
|
|
{
|
|
return call_int_hook(secmark_relabel_packet, 0, secid);
|
|
}
|
|
EXPORT_SYMBOL(security_secmark_relabel_packet);
|
|
|
|
void security_secmark_refcount_inc(void)
|
|
{
|
|
call_void_hook(secmark_refcount_inc);
|
|
}
|
|
EXPORT_SYMBOL(security_secmark_refcount_inc);
|
|
|
|
void security_secmark_refcount_dec(void)
|
|
{
|
|
call_void_hook(secmark_refcount_dec);
|
|
}
|
|
EXPORT_SYMBOL(security_secmark_refcount_dec);
|
|
|
|
int security_tun_dev_alloc_security(void **security)
|
|
{
|
|
return call_int_hook(tun_dev_alloc_security, 0, security);
|
|
}
|
|
EXPORT_SYMBOL(security_tun_dev_alloc_security);
|
|
|
|
void security_tun_dev_free_security(void *security)
|
|
{
|
|
call_void_hook(tun_dev_free_security, security);
|
|
}
|
|
EXPORT_SYMBOL(security_tun_dev_free_security);
|
|
|
|
int security_tun_dev_create(void)
|
|
{
|
|
return call_int_hook(tun_dev_create, 0);
|
|
}
|
|
EXPORT_SYMBOL(security_tun_dev_create);
|
|
|
|
int security_tun_dev_attach_queue(void *security)
|
|
{
|
|
return call_int_hook(tun_dev_attach_queue, 0, security);
|
|
}
|
|
EXPORT_SYMBOL(security_tun_dev_attach_queue);
|
|
|
|
int security_tun_dev_attach(struct sock *sk, void *security)
|
|
{
|
|
return call_int_hook(tun_dev_attach, 0, sk, security);
|
|
}
|
|
EXPORT_SYMBOL(security_tun_dev_attach);
|
|
|
|
int security_tun_dev_open(void *security)
|
|
{
|
|
return call_int_hook(tun_dev_open, 0, security);
|
|
}
|
|
EXPORT_SYMBOL(security_tun_dev_open);
|
|
|
|
#endif /* CONFIG_SECURITY_NETWORK */
|
|
|
|
#ifdef CONFIG_SECURITY_INFINIBAND
|
|
|
|
int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
|
|
{
|
|
return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
|
|
}
|
|
EXPORT_SYMBOL(security_ib_pkey_access);
|
|
|
|
int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
|
|
{
|
|
return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
|
|
}
|
|
EXPORT_SYMBOL(security_ib_endport_manage_subnet);
|
|
|
|
int security_ib_alloc_security(void **sec)
|
|
{
|
|
return call_int_hook(ib_alloc_security, 0, sec);
|
|
}
|
|
EXPORT_SYMBOL(security_ib_alloc_security);
|
|
|
|
void security_ib_free_security(void *sec)
|
|
{
|
|
call_void_hook(ib_free_security, sec);
|
|
}
|
|
EXPORT_SYMBOL(security_ib_free_security);
|
|
#endif /* CONFIG_SECURITY_INFINIBAND */
|
|
|
|
#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 call_int_hook(xfrm_policy_alloc_security, 0, 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 call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
|
|
}
|
|
|
|
void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
|
|
{
|
|
call_void_hook(xfrm_policy_free_security, ctx);
|
|
}
|
|
EXPORT_SYMBOL(security_xfrm_policy_free);
|
|
|
|
int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
|
|
{
|
|
return call_int_hook(xfrm_policy_delete_security, 0, ctx);
|
|
}
|
|
|
|
int security_xfrm_state_alloc(struct xfrm_state *x,
|
|
struct xfrm_user_sec_ctx *sec_ctx)
|
|
{
|
|
return call_int_hook(xfrm_state_alloc, 0, 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 call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
|
|
}
|
|
|
|
int security_xfrm_state_delete(struct xfrm_state *x)
|
|
{
|
|
return call_int_hook(xfrm_state_delete_security, 0, x);
|
|
}
|
|
EXPORT_SYMBOL(security_xfrm_state_delete);
|
|
|
|
void security_xfrm_state_free(struct xfrm_state *x)
|
|
{
|
|
call_void_hook(xfrm_state_free_security, x);
|
|
}
|
|
|
|
int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
|
|
{
|
|
return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
|
|
}
|
|
|
|
int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
|
|
struct xfrm_policy *xp,
|
|
const struct flowi *fl)
|
|
{
|
|
struct security_hook_list *hp;
|
|
int rc = 1;
|
|
|
|
/*
|
|
* Since this function is expected to return 0 or 1, the judgment
|
|
* becomes difficult if multiple LSMs supply this call. Fortunately,
|
|
* we can use the first LSM's judgment because currently only SELinux
|
|
* supplies this call.
|
|
*
|
|
* For speed optimization, we explicitly break the loop rather than
|
|
* using the macro
|
|
*/
|
|
list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
|
|
list) {
|
|
rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
|
|
break;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
|
|
{
|
|
return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
|
|
}
|
|
|
|
void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
|
|
{
|
|
int rc = call_int_hook(xfrm_decode_session, 0, 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 call_int_hook(key_alloc, 0, key, cred, flags);
|
|
}
|
|
|
|
void security_key_free(struct key *key)
|
|
{
|
|
call_void_hook(key_free, key);
|
|
}
|
|
|
|
int security_key_permission(key_ref_t key_ref,
|
|
const struct cred *cred, unsigned perm)
|
|
{
|
|
return call_int_hook(key_permission, 0, key_ref, cred, perm);
|
|
}
|
|
|
|
int security_key_getsecurity(struct key *key, char **_buffer)
|
|
{
|
|
*_buffer = NULL;
|
|
return call_int_hook(key_getsecurity, 0, key, _buffer);
|
|
}
|
|
|
|
#endif /* CONFIG_KEYS */
|
|
|
|
#ifdef CONFIG_AUDIT
|
|
|
|
int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
|
|
{
|
|
return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
|
|
}
|
|
|
|
int security_audit_rule_known(struct audit_krule *krule)
|
|
{
|
|
return call_int_hook(audit_rule_known, 0, krule);
|
|
}
|
|
|
|
void security_audit_rule_free(void *lsmrule)
|
|
{
|
|
call_void_hook(audit_rule_free, lsmrule);
|
|
}
|
|
|
|
int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
|
|
struct audit_context *actx)
|
|
{
|
|
return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
|
|
actx);
|
|
}
|
|
#endif /* CONFIG_AUDIT */
|