mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-18 03:23:53 -04:00
7ccbe076d9
When CONFIG_AUDIT is set, its CONFIG_NET dependency is also set, and the dev_get_by_index and init_net symbols (used by dump_common_audit_data) are found by the linker. dump_common_audit_data() should then failed to build when CONFIG_NET is not set. However, because the compiler is smart, it knows that audit_log_start() always return NULL when !CONFIG_AUDIT, and it doesn't build the body of common_lsm_audit(). As a side effect, dump_common_audit_data() is not built and the linker doesn't error out because of missing symbols. Let's only build lsm_audit.o when CONFIG_SECURITY and CONFIG_AUDIT are both set, which is checked with the new CONFIG_HAS_SECURITY_AUDIT. ipv4_skb_to_auditdata() and ipv6_skb_to_auditdata() are only used by Smack if CONFIG_AUDIT is set, so they don't need fake implementations. Because common_lsm_audit() is used in multiple places without CONFIG_AUDIT checks, add a fake implementation. Link: https://lore.kernel.org/r/20241122143353.59367-2-mic@digikod.net Cc: Casey Schaufler <casey@schaufler-ca.com> Cc: James Morris <jmorris@namei.org> Cc: Paul Moore <paul@paul-moore.com> Cc: Serge E. Hallyn <serge@hallyn.com> Signed-off-by: Mickaël Salaün <mic@digikod.net> Signed-off-by: Paul Moore <paul@paul-moore.com>
144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Common LSM logging functions
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* Heavily borrowed from selinux/avc.h
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*
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* Author : Etienne BASSET <etienne.basset@ensta.org>
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*
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* All credits to : Stephen Smalley, <sds@tycho.nsa.gov>
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* All BUGS to : Etienne BASSET <etienne.basset@ensta.org>
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*/
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#ifndef _LSM_COMMON_LOGGING_
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#define _LSM_COMMON_LOGGING_
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#include <linux/stddef.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/kdev_t.h>
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#include <linux/spinlock.h>
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#include <linux/init.h>
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#include <linux/audit.h>
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#include <linux/in6.h>
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#include <linux/path.h>
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#include <linux/key.h>
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#include <linux/skbuff.h>
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#include <rdma/ib_verbs.h>
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struct lsm_network_audit {
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int netif;
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const struct sock *sk;
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u16 family;
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__be16 dport;
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__be16 sport;
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union {
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struct {
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__be32 daddr;
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__be32 saddr;
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} v4;
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struct {
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struct in6_addr daddr;
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struct in6_addr saddr;
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} v6;
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} fam;
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};
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struct lsm_ioctlop_audit {
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struct path path;
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u16 cmd;
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};
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struct lsm_ibpkey_audit {
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u64 subnet_prefix;
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u16 pkey;
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};
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struct lsm_ibendport_audit {
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const char *dev_name;
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u8 port;
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};
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/* Auxiliary data to use in generating the audit record. */
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struct common_audit_data {
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char type;
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#define LSM_AUDIT_DATA_PATH 1
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#define LSM_AUDIT_DATA_NET 2
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#define LSM_AUDIT_DATA_CAP 3
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#define LSM_AUDIT_DATA_IPC 4
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#define LSM_AUDIT_DATA_TASK 5
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#define LSM_AUDIT_DATA_KEY 6
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#define LSM_AUDIT_DATA_NONE 7
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#define LSM_AUDIT_DATA_KMOD 8
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#define LSM_AUDIT_DATA_INODE 9
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#define LSM_AUDIT_DATA_DENTRY 10
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#define LSM_AUDIT_DATA_IOCTL_OP 11
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#define LSM_AUDIT_DATA_FILE 12
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#define LSM_AUDIT_DATA_IBPKEY 13
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#define LSM_AUDIT_DATA_IBENDPORT 14
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#define LSM_AUDIT_DATA_LOCKDOWN 15
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#define LSM_AUDIT_DATA_NOTIFICATION 16
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#define LSM_AUDIT_DATA_ANONINODE 17
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union {
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struct path path;
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struct dentry *dentry;
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struct inode *inode;
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struct lsm_network_audit *net;
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int cap;
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int ipc_id;
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struct task_struct *tsk;
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#ifdef CONFIG_KEYS
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struct {
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key_serial_t key;
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char *key_desc;
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} key_struct;
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#endif
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char *kmod_name;
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struct lsm_ioctlop_audit *op;
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struct file *file;
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struct lsm_ibpkey_audit *ibpkey;
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struct lsm_ibendport_audit *ibendport;
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int reason;
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const char *anonclass;
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} u;
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/* this union contains LSM specific data */
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union {
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#ifdef CONFIG_SECURITY_SMACK
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struct smack_audit_data *smack_audit_data;
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#endif
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#ifdef CONFIG_SECURITY_SELINUX
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struct selinux_audit_data *selinux_audit_data;
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#endif
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#ifdef CONFIG_SECURITY_APPARMOR
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struct apparmor_audit_data *apparmor_audit_data;
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#endif
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}; /* per LSM data pointer union */
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};
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#define v4info fam.v4
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#define v6info fam.v6
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#ifdef CONFIG_AUDIT
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int ipv4_skb_to_auditdata(struct sk_buff *skb,
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struct common_audit_data *ad, u8 *proto);
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#if IS_ENABLED(CONFIG_IPV6)
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int ipv6_skb_to_auditdata(struct sk_buff *skb,
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struct common_audit_data *ad, u8 *proto);
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#endif /* IS_ENABLED(CONFIG_IPV6) */
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void common_lsm_audit(struct common_audit_data *a,
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void (*pre_audit)(struct audit_buffer *, void *),
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void (*post_audit)(struct audit_buffer *, void *));
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#else /* CONFIG_AUDIT */
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static inline void common_lsm_audit(struct common_audit_data *a,
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void (*pre_audit)(struct audit_buffer *, void *),
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void (*post_audit)(struct audit_buffer *, void *))
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{
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}
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#endif /* CONFIG_AUDIT */
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#endif
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