Re: [PATCH -v3] SELinux: Convert avc_audit to use lsm_audit.h

Stephen Smalley
2009-08-14T14:51:41Z

On Tue, 2009-07-14 at 12:14 -0400, Thomas Liu wrote:
> Convert avc_audit in security/selinux/avc.c to use lsm_audit.h,
> for better maintainability.
>
> - changed selinux to use common_audit_data instead of
> avc_audit_data
> - eliminated code in avc.c and used code from lsm_audit.h instead.
>
> Had to add a LSM_AUDIT_NO_AUDIT to lsm_audit.h so that avc_audit
> can call common_lsm_audit and do the pre and post callbacks without
> doing the actual dump. This makes it so that the patched version
> behaves the same way as the unpatched version.
>
> Also added a denied field to the selinux_audit_data private space,
> once again to make it so that the patched version behaves like the
> unpatched.
>
> I've tested and confirmed that AVCs look the same before and after
> this patch.
>
> Signed-off-by: Thomas Liu <tliu@redhat.com>

Acked-by: Stephen Smalley <sds@tycho.nsa.gov>

Looks like there is also further room for consolidation, e.g. the skb
parsing routines.

BTW, it looks to my untrained eye as if dump_common_audit_data() allows
one to pass a separate target task in the union, in which case we'll get
two sets of pid= and comm= data in the same record, one for the subject
and one for the target/object. It appears that Smack is already using
that facility for things like ptrace, kill, etc, whereas SELinux is not.
Two questions:
1) Will the multiple pid= comm= entries get handled correctly by auditd
and the audit tools? Do we need separate names for the target vs source
pid/comm values?
2) Should we start using ad.u.tsk in SELinux as well to capture the
target of a ptrace, kill, wait, ... in the avc audit record?

> ---
> Sorry about the previous version!
>
> include/linux/lsm_audit.h | 2
> security/Makefile | 4 -
> security/lsm_audit.c | 2
> security/selinux/avc.c | 197 +++++++----------------------------
> security/selinux/hooks.c | 142 +++++++++++++------------
> security/selinux/include/avc.h | 49 +--------
> security/selinux/include/netlabel.h | 4 -
> security/selinux/include/xfrm.h | 8 +
> security/selinux/netlabel.c | 2
> security/selinux/xfrm.c | 4 -
> 10 files changed, 131 insertions(+), 283 deletions(-)
>
>
> diff --git a/include/linux/lsm_audit.h b/include/linux/lsm_audit.h
> index a5514a3..190c378 100644
> --- a/include/linux/lsm_audit.h
> +++ b/include/linux/lsm_audit.h
> @@ -33,6 +33,7 @@ struct common_audit_data {
> #define LSM_AUDIT_DATA_IPC 4
> #define LSM_AUDIT_DATA_TASK 5
> #define LSM_AUDIT_DATA_KEY 6
> +#define LSM_AUDIT_NO_AUDIT 7
> struct task_struct *tsk;
> union {
> struct {
> @@ -86,6 +87,7 @@ struct common_audit_data {
> u16 tclass;
> u32 requested;
> u32 audited;
> + u32 denied;
> struct av_decision *avd;
> int result;
> } selinux_audit_data;
> diff --git a/security/Makefile b/security/Makefile
> index c67557c..8dcc1fd 100644
> --- a/security/Makefile
> +++ b/security/Makefile
> @@ -16,9 +16,7 @@ obj-$(CONFIG_SECURITYFS) += inode.o
> # Must precede capability.o in order to stack properly.
> obj-$(CONFIG_SECURITY_SELINUX) += selinux/built-in.o
> obj-$(CONFIG_SECURITY_SMACK) += smack/built-in.o
> -ifeq ($(CONFIG_AUDIT),y)
> -obj-$(CONFIG_SECURITY_SMACK) += lsm_audit.o
> -endif
> +obj-$(CONFIG_AUDIT) += lsm_audit.o
> obj-$(CONFIG_SECURITY_TOMOYO) += tomoyo/built-in.o
> obj-$(CONFIG_SECURITY_ROOTPLUG) += root_plug.o
> obj-$(CONFIG_CGROUP_DEVICE) += device_cgroup.o
> diff --git a/security/lsm_audit.c b/security/lsm_audit.c
> index 94b8684..500aad0 100644
> --- a/security/lsm_audit.c
> +++ b/security/lsm_audit.c
> @@ -220,6 +220,8 @@ static void dump_common_audit_data(struct audit_buffer *ab,
> }
>
> switch (a->type) {
> + case LSM_AUDIT_NO_AUDIT:
> + return;
> case LSM_AUDIT_DATA_IPC:
> audit_log_format(ab, " key=%d ", a->u.ipc_id);
> break;
> diff --git a/security/selinux/avc.c b/security/selinux/avc.c
> index 236aaa2..e3d1901 100644
> --- a/security/selinux/avc.c
> +++ b/security/selinux/avc.c
> @@ -492,23 +492,35 @@ out:
> return node;
> }
>
> -static inline void avc_print_ipv6_addr(struct audit_buffer *ab,
> - struct in6_addr *addr, __be16 port,
> - char *name1, char *name2)
> +/**
> + * avc_audit_pre_callback - SELinux specific information
> + * will be called by generic audit code
> + * @ab: the audit buffer
> + * @a: audit_data
> + */
> +static void avc_audit_pre_callback(struct audit_buffer *ab, void *a)
> {
> - if (!ipv6_addr_any(addr))
> - audit_log_format(ab, " %s=%pI6", name1, addr);
> - if (port)
> - audit_log_format(ab, " %s=%d", name2, ntohs(port));
> + struct common_audit_data *ad = a;
> + audit_log_format(ab, "avc: %s ",
> + ad->selinux_audit_data.denied ? "denied" : "granted");
> + avc_dump_av(ab, ad->selinux_audit_data.tclass,
> + ad->selinux_audit_data.audited);
> + audit_log_format(ab, " for ");
> }
>
> -static inline void avc_print_ipv4_addr(struct audit_buffer *ab, __be32 addr,
> - __be16 port, char *name1, char *name2)
> +/**
> + * avc_audit_post_callback - SELinux specific information
> + * will be called by generic audit code
> + * @ab: the audit buffer
> + * @a: audit_data
> + */
> +static void avc_audit_post_callback(struct audit_buffer *ab, void *a)
> {
> - if (addr)
> - audit_log_format(ab, " %s=%pI4", name1, &addr);
> - if (port)
> - audit_log_format(ab, " %s=%d", name2, ntohs(port));
> + struct common_audit_data *ad = a;
> + audit_log_format(ab, " ");
> + avc_dump_query(ab, ad->selinux_audit_data.ssid,
> + ad->selinux_audit_data.tsid,
> + ad->selinux_audit_data.tclass);
> }
>
> /**
> @@ -532,13 +544,10 @@ static inline void avc_print_ipv4_addr(struct audit_buffer *ab, __be32 addr,
> */
> void avc_audit(u32 ssid, u32 tsid,
> u16 tclass, u32 requested,
> - struct av_decision *avd, int result, struct avc_audit_data *a)
> + struct av_decision *avd, int result, struct common_audit_data *a)
> {
> - struct task_struct *tsk = current;
> - struct inode *inode = NULL;
> + struct common_audit_data stack_data;
> u32 denied, audited;
> - struct audit_buffer *ab;
> -
> denied = requested & ~avd->allowed;
> if (denied) {
> audited = denied;
> @@ -551,144 +560,20 @@ void avc_audit(u32 ssid, u32 tsid,
> if (!(audited & avd->auditallow))
> return;
> }
> -
> - ab = audit_log_start(current->audit_context, GFP_ATOMIC, AUDIT_AVC);
> - if (!ab)
> - return; /* audit_panic has been called */
> - audit_log_format(ab, "avc: %s ", denied ? "denied" : "granted");
> - avc_dump_av(ab, tclass, audited);
> - audit_log_format(ab, " for ");
> - if (a && a->tsk)
> - tsk = a->tsk;
> - if (tsk && tsk->pid) {
> - audit_log_format(ab, " pid=%d comm=", tsk->pid);
> - audit_log_untrustedstring(ab, tsk->comm);
> - }
> - if (a) {
> - switch (a->type) {
> - case AVC_AUDIT_DATA_IPC:
> - audit_log_format(ab, " key=%d", a->u.ipc_id);
> - break;
> - case AVC_AUDIT_DATA_CAP:
> - audit_log_format(ab, " capability=%d", a->u.cap);
> - break;
> - case AVC_AUDIT_DATA_FS:
> - if (a->u.fs.path.dentry) {
> - struct dentry *dentry = a->u.fs.path.dentry;
> - if (a->u.fs.path.mnt) {
> - audit_log_d_path(ab, "path=",
> - &a->u.fs.path);
> - } else {
> - audit_log_format(ab, " name=");
> - audit_log_untrustedstring(ab, dentry->d_name.name);
> - }
> - inode = dentry->d_inode;
> - } else if (a->u.fs.inode) {
> - struct dentry *dentry;
> - inode = a->u.fs.inode;
> - dentry = d_find_alias(inode);
> - if (dentry) {
> - audit_log_format(ab, " name=");
> - audit_log_untrustedstring(ab, dentry->d_name.name);
> - dput(dentry);
> - }
> - }
> - if (inode)
> - audit_log_format(ab, " dev=%s ino=%lu",
> - inode->i_sb->s_id,
> - inode->i_ino);
> - break;
> - case AVC_AUDIT_DATA_NET:
> - if (a->u.net.sk) {
> - struct sock *sk = a->u.net.sk;
> - struct unix_sock *u;
> - int len = 0;
> - char *p = NULL;
> -
> - switch (sk->sk_family) {
> - case AF_INET: {
> - struct inet_sock *inet = inet_sk(sk);
> -
> - avc_print_ipv4_addr(ab, inet->rcv_saddr,
> - inet->sport,
> - "laddr", "lport");
> - avc_print_ipv4_addr(ab, inet->daddr,
> - inet->dport,
> - "faddr", "fport");
> - break;
> - }
> - case AF_INET6: {
> - struct inet_sock *inet = inet_sk(sk);
> - struct ipv6_pinfo *inet6 = inet6_sk(sk);
> -
> - avc_print_ipv6_addr(ab, &inet6->rcv_saddr,
> - inet->sport,
> - "laddr", "lport");
> - avc_print_ipv6_addr(ab, &inet6->daddr,
> - inet->dport,
> - "faddr", "fport");
> - break;
> - }
> - case AF_UNIX:
> - u = unix_sk(sk);
> - if (u->dentry) {
> - struct path path = {
> - .dentry = u->dentry,
> - .mnt = u->mnt
> - };
> - audit_log_d_path(ab, "path=",
> - &path);
> - break;
> - }
> - if (!u->addr)
> - break;
> - len = u->addr->len-sizeof(short);
> - p = &u->addr->name->sun_path[0];
> - audit_log_format(ab, " path=");
> - if (*p)
> - audit_log_untrustedstring(ab, p);
> - else
> - audit_log_n_hex(ab, p, len);
> - break;
> - }
> - }
> -
> - switch (a->u.net.family) {
> - case AF_INET:
> - avc_print_ipv4_addr(ab, a->u.net.v4info.saddr,
> - a->u.net.sport,
> - "saddr", "src");
> - avc_print_ipv4_addr(ab, a->u.net.v4info.daddr,
> - a->u.net.dport,
> - "daddr", "dest");
> - break;
> - case AF_INET6:
> - avc_print_ipv6_addr(ab, &a->u.net.v6info.saddr,
> - a->u.net.sport,
> - "saddr", "src");
> - avc_print_ipv6_addr(ab, &a->u.net.v6info.daddr,
> - a->u.net.dport,
> - "daddr", "dest");
> - break;
> - }
> - if (a->u.net.netif > 0) {
> - struct net_device *dev;
> -
> - /* NOTE: we always use init's namespace */
> - dev = dev_get_by_index(&init_net,
> - a->u.net.netif);
> - if (dev) {
> - audit_log_format(ab, " netif=%s",
> - dev->name);
> - dev_put(dev);
> - }
> - }
> - break;
> - }
> + if (!a) {
> + a = &stack_data;
> + memset(a, 0, sizeof(*a));
> + a->type = LSM_AUDIT_NO_AUDIT;
> }
> - audit_log_format(ab, " ");
> - avc_dump_query(ab, ssid, tsid, tclass);
> - audit_log_end(ab);
> + a->selinux_audit_data.tclass = tclass;
> + a->selinux_audit_data.requested = requested;
> + a->selinux_audit_data.ssid = ssid;
> + a->selinux_audit_data.tsid = tsid;
> + a->selinux_audit_data.audited = audited;
> + a->selinux_audit_data.denied = denied;
> + a->lsm_pre_audit = avc_audit_pre_callback;
> + a->lsm_post_audit = avc_audit_post_callback;
> + common_lsm_audit(a);
> }
>
> /**
> @@ -956,7 +841,7 @@ out:
> * another -errno upon other errors.
> */
> int avc_has_perm(u32 ssid, u32 tsid, u16 tclass,
> - u32 requested, struct avc_audit_data *auditdata)
> + u32 requested, struct common_audit_data *auditdata)
> {
> struct av_decision avd;
> int rc;
> diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> index 2081055..a7de261 100644
> --- a/security/selinux/hooks.c
> +++ b/security/selinux/hooks.c
> @@ -1478,14 +1478,14 @@ static int task_has_capability(struct task_struct *tsk,
> const struct cred *cred,
> int cap, int audit)
> {
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> struct av_decision avd;
> u16 sclass;
> u32 sid = cred_sid(cred);
> u32 av = CAP_TO_MASK(cap);
> int rc;
>
> - AVC_AUDIT_DATA_INIT(&ad, CAP);
> + COMMON_AUDIT_DATA_INIT(&ad, CAP);
> ad.tsk = tsk;
> ad.u.cap = cap;
>
> @@ -1524,10 +1524,10 @@ static int task_has_system(struct task_struct *tsk,
> static int inode_has_perm(const struct cred *cred,
> struct inode *inode,
> u32 perms,
> - struct avc_audit_data *adp)
> + struct common_audit_data *adp)
> {
> struct inode_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid;
>
> if (unlikely(IS_PRIVATE(inode)))
> @@ -1538,7 +1538,7 @@ static int inode_has_perm(const struct cred *cred,
>
> if (!adp) {
> adp = &ad;
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.inode = inode;
> }
>
> @@ -1554,9 +1554,9 @@ static inline int dentry_has_perm(const struct cred *cred,
> u32 av)
> {
> struct inode *inode = dentry->d_inode;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.path.mnt = mnt;
> ad.u.fs.path.dentry = dentry;
> return inode_has_perm(cred, inode, av, &ad);
> @@ -1576,11 +1576,11 @@ static int file_has_perm(const struct cred *cred,
> {
> struct file_security_struct *fsec = file->f_security;
> struct inode *inode = file->f_path.dentry->d_inode;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = cred_sid(cred);
> int rc;
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.path = file->f_path;
>
> if (sid != fsec->sid) {
> @@ -1611,7 +1611,7 @@ static int may_create(struct inode *dir,
> struct inode_security_struct *dsec;
> struct superblock_security_struct *sbsec;
> u32 sid, newsid;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> int rc;
>
> dsec = dir->i_security;
> @@ -1620,7 +1620,7 @@ static int may_create(struct inode *dir,
> sid = tsec->sid;
> newsid = tsec->create_sid;
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.path.dentry = dentry;
>
> rc = avc_has_perm(sid, dsec->sid, SECCLASS_DIR,
> @@ -1664,7 +1664,7 @@ static int may_link(struct inode *dir,
>
> {
> struct inode_security_struct *dsec, *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
> u32 av;
> int rc;
> @@ -1672,7 +1672,7 @@ static int may_link(struct inode *dir,
> dsec = dir->i_security;
> isec = dentry->d_inode->i_security;
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.path.dentry = dentry;
>
> av = DIR__SEARCH;
> @@ -1707,7 +1707,7 @@ static inline int may_rename(struct inode *old_dir,
> struct dentry *new_dentry)
> {
> struct inode_security_struct *old_dsec, *new_dsec, *old_isec, *new_isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
> u32 av;
> int old_is_dir, new_is_dir;
> @@ -1718,7 +1718,7 @@ static inline int may_rename(struct inode *old_dir,
> old_is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
> new_dsec = new_dir->i_security;
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
>
> ad.u.fs.path.dentry = old_dentry;
> rc = avc_has_perm(sid, old_dsec->sid, SECCLASS_DIR,
> @@ -1760,7 +1760,7 @@ static inline int may_rename(struct inode *old_dir,
> static int superblock_has_perm(const struct cred *cred,
> struct super_block *sb,
> u32 perms,
> - struct avc_audit_data *ad)
> + struct common_audit_data *ad)
> {
> struct superblock_security_struct *sbsec;
> u32 sid = cred_sid(cred);
> @@ -2100,7 +2100,7 @@ static int selinux_bprm_set_creds(struct linux_binprm *bprm)
> const struct task_security_struct *old_tsec;
> struct task_security_struct *new_tsec;
> struct inode_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> struct inode *inode = bprm->file->f_path.dentry->d_inode;
> int rc;
>
> @@ -2138,7 +2138,7 @@ static int selinux_bprm_set_creds(struct linux_binprm *bprm)
> return rc;
> }
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.path = bprm->file->f_path;
>
> if (bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID)
> @@ -2231,7 +2231,7 @@ extern struct dentry *selinux_null;
> static inline void flush_unauthorized_files(const struct cred *cred,
> struct files_struct *files)
> {
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> struct file *file, *devnull = NULL;
> struct tty_struct *tty;
> struct fdtable *fdt;
> @@ -2265,7 +2265,7 @@ static inline void flush_unauthorized_files(const struct cred *cred,
>
> /* Revalidate access to inherited open files. */
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
>
> spin_lock(&files->file_lock);
> for (;;) {
> @@ -2514,7 +2514,7 @@ out:
> static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
> {
> const struct cred *cred = current_cred();
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> int rc;
>
> rc = superblock_doinit(sb, data);
> @@ -2525,7 +2525,7 @@ static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
> if (flags & MS_KERNMOUNT)
> return 0;
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.path.dentry = sb->s_root;
> return superblock_has_perm(cred, sb, FILESYSTEM__MOUNT, &ad);
> }
> @@ -2533,9 +2533,9 @@ static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
> static int selinux_sb_statfs(struct dentry *dentry)
> {
> const struct cred *cred = current_cred();
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.path.dentry = dentry->d_sb->s_root;
> return superblock_has_perm(cred, dentry->d_sb, FILESYSTEM__GETATTR, &ad);
> }
> @@ -2755,7 +2755,7 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
> struct inode *inode = dentry->d_inode;
> struct inode_security_struct *isec = inode->i_security;
> struct superblock_security_struct *sbsec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 newsid, sid = current_sid();
> int rc = 0;
>
> @@ -2769,7 +2769,7 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
> if (!is_owner_or_cap(inode))
> return -EPERM;
>
> - AVC_AUDIT_DATA_INIT(&ad, FS);
> + COMMON_AUDIT_DATA_INIT(&ad, FS);
> ad.u.fs.path.dentry = dentry;
>
> rc = avc_has_perm(sid, isec->sid, isec->sclass,
> @@ -3401,7 +3401,7 @@ static void selinux_task_to_inode(struct task_struct *p,
>
> /* Returns error only if unable to parse addresses */
> static int selinux_parse_skb_ipv4(struct sk_buff *skb,
> - struct avc_audit_data *ad, u8 *proto)
> + struct common_audit_data *ad, u8 *proto)
> {
> int offset, ihlen, ret = -EINVAL;
> struct iphdr _iph, *ih;
> @@ -3482,7 +3482,7 @@ out:
>
> /* Returns error only if unable to parse addresses */
> static int selinux_parse_skb_ipv6(struct sk_buff *skb,
> - struct avc_audit_data *ad, u8 *proto)
> + struct common_audit_data *ad, u8 *proto)
> {
> u8 nexthdr;
> int ret = -EINVAL, offset;
> @@ -3553,7 +3553,7 @@ out:
>
> #endif /* IPV6 */
>
> -static int selinux_parse_skb(struct sk_buff *skb, struct avc_audit_data *ad,
> +static int selinux_parse_skb(struct sk_buff *skb, struct common_audit_data *ad,
> char **_addrp, int src, u8 *proto)
> {
> char *addrp;
> @@ -3635,7 +3635,7 @@ static int socket_has_perm(struct task_struct *task, struct socket *sock,
> u32 perms)
> {
> struct inode_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid;
> int err = 0;
>
> @@ -3645,7 +3645,7 @@ static int socket_has_perm(struct task_struct *task, struct socket *sock,
> goto out;
> sid = task_sid(task);
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.sk = sock->sk;
> err = avc_has_perm(sid, isec->sid, isec->sclass, perms, &ad);
>
> @@ -3732,7 +3732,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
> if (family == PF_INET || family == PF_INET6) {
> char *addrp;
> struct inode_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> struct sockaddr_in *addr4 = NULL;
> struct sockaddr_in6 *addr6 = NULL;
> unsigned short snum;
> @@ -3761,7 +3761,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
> snum, &sid);
> if (err)
> goto out;
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.sport = htons(snum);
> ad.u.net.family = family;
> err = avc_has_perm(isec->sid, sid,
> @@ -3794,7 +3794,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
> if (err)
> goto out;
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.sport = htons(snum);
> ad.u.net.family = family;
>
> @@ -3828,7 +3828,7 @@ static int selinux_socket_connect(struct socket *sock, struct sockaddr *address,
> isec = SOCK_INODE(sock)->i_security;
> if (isec->sclass == SECCLASS_TCP_SOCKET ||
> isec->sclass == SECCLASS_DCCP_SOCKET) {
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> struct sockaddr_in *addr4 = NULL;
> struct sockaddr_in6 *addr6 = NULL;
> unsigned short snum;
> @@ -3853,7 +3853,7 @@ static int selinux_socket_connect(struct socket *sock, struct sockaddr *address,
> perm = (isec->sclass == SECCLASS_TCP_SOCKET) ?
> TCP_SOCKET__NAME_CONNECT : DCCP_SOCKET__NAME_CONNECT;
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.dport = htons(snum);
> ad.u.net.family = sk->sk_family;
> err = avc_has_perm(isec->sid, sid, isec->sclass, perm, &ad);
> @@ -3943,13 +3943,13 @@ static int selinux_socket_unix_stream_connect(struct socket *sock,
> struct sk_security_struct *ssec;
> struct inode_security_struct *isec;
> struct inode_security_struct *other_isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> int err;
>
> isec = SOCK_INODE(sock)->i_security;
> other_isec = SOCK_INODE(other)->i_security;
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.sk = other->sk;
>
> err = avc_has_perm(isec->sid, other_isec->sid,
> @@ -3975,13 +3975,13 @@ static int selinux_socket_unix_may_send(struct socket *sock,
> {
> struct inode_security_struct *isec;
> struct inode_security_struct *other_isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> int err;
>
> isec = SOCK_INODE(sock)->i_security;
> other_isec = SOCK_INODE(other)->i_security;
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.sk = other->sk;
>
> err = avc_has_perm(isec->sid, other_isec->sid,
> @@ -3994,7 +3994,7 @@ static int selinux_socket_unix_may_send(struct socket *sock,
>
> static int selinux_inet_sys_rcv_skb(int ifindex, char *addrp, u16 family,
> u32 peer_sid,
> - struct avc_audit_data *ad)
> + struct common_audit_data *ad)
> {
> int err;
> u32 if_sid;
> @@ -4022,10 +4022,10 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
> struct sk_security_struct *sksec = sk->sk_security;
> u32 peer_sid;
> u32 sk_sid = sksec->sid;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> char *addrp;
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.netif = skb->iif;
> ad.u.net.family = family;
> err = selinux_parse_skb(skb, &ad, &addrp, 1, NULL);
> @@ -4063,7 +4063,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
> struct sk_security_struct *sksec = sk->sk_security;
> u16 family = sk->sk_family;
> u32 sk_sid = sksec->sid;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> char *addrp;
> u8 secmark_active;
> u8 peerlbl_active;
> @@ -4087,7 +4087,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
> if (!secmark_active && !peerlbl_active)
> return 0;
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.netif = skb->iif;
> ad.u.net.family = family;
> err = selinux_parse_skb(skb, &ad, &addrp, 1, NULL);
> @@ -4345,7 +4345,7 @@ static unsigned int selinux_ip_forward(struct sk_buff *skb, int ifindex,
> int err;
> char *addrp;
> u32 peer_sid;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u8 secmark_active;
> u8 netlbl_active;
> u8 peerlbl_active;
> @@ -4362,7 +4362,7 @@ static unsigned int selinux_ip_forward(struct sk_buff *skb, int ifindex,
> if (selinux_skb_peerlbl_sid(skb, family, &peer_sid) != 0)
> return NF_DROP;
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.netif = ifindex;
> ad.u.net.family = family;
> if (selinux_parse_skb(skb, &ad, &addrp, 1, NULL) != 0)
> @@ -4450,7 +4450,7 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
> {
> struct sock *sk = skb->sk;
> struct sk_security_struct *sksec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> char *addrp;
> u8 proto;
>
> @@ -4458,7 +4458,7 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
> return NF_ACCEPT;
> sksec = sk->sk_security;
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.netif = ifindex;
> ad.u.net.family = family;
> if (selinux_parse_skb(skb, &ad, &addrp, 0, &proto))
> @@ -4482,7 +4482,7 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, int ifindex,
> u32 secmark_perm;
> u32 peer_sid;
> struct sock *sk;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> char *addrp;
> u8 secmark_active;
> u8 peerlbl_active;
> @@ -4541,7 +4541,7 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, int ifindex,
> secmark_perm = PACKET__SEND;
> }
>
> - AVC_AUDIT_DATA_INIT(&ad, NET);
> + COMMON_AUDIT_DATA_INIT(&ad, NET);
> ad.u.net.netif = ifindex;
> ad.u.net.family = family;
> if (selinux_parse_skb(skb, &ad, &addrp, 0, NULL))
> @@ -4611,13 +4611,13 @@ static int selinux_netlink_send(struct sock *sk, struct sk_buff *skb)
> static int selinux_netlink_recv(struct sk_buff *skb, int capability)
> {
> int err;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
>
> err = cap_netlink_recv(skb, capability);
> if (err)
> return err;
>
> - AVC_AUDIT_DATA_INIT(&ad, CAP);
> + COMMON_AUDIT_DATA_INIT(&ad, CAP);
> ad.u.cap = capability;
>
> return avc_has_perm(NETLINK_CB(skb).sid, NETLINK_CB(skb).sid,
> @@ -4676,12 +4676,12 @@ static int ipc_has_perm(struct kern_ipc_perm *ipc_perms,
> u32 perms)
> {
> struct ipc_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
>
> isec = ipc_perms->security;
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = ipc_perms->key;
>
> return avc_has_perm(sid, isec->sid, isec->sclass, perms, &ad);
> @@ -4701,7 +4701,7 @@ static void selinux_msg_msg_free_security(struct msg_msg *msg)
> static int selinux_msg_queue_alloc_security(struct msg_queue *msq)
> {
> struct ipc_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
> int rc;
>
> @@ -4711,7 +4711,7 @@ static int selinux_msg_queue_alloc_security(struct msg_queue *msq)
>
> isec = msq->q_perm.security;
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = msq->q_perm.key;
>
> rc = avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
> @@ -4731,12 +4731,12 @@ static void selinux_msg_queue_free_security(struct msg_queue *msq)
> static int selinux_msg_queue_associate(struct msg_queue *msq, int msqflg)
> {
> struct ipc_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
>
> isec = msq->q_perm.security;
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = msq->q_perm.key;
>
> return avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
> @@ -4775,7 +4775,7 @@ static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
> {
> struct ipc_security_struct *isec;
> struct msg_security_struct *msec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
> int rc;
>
> @@ -4796,7 +4796,7 @@ static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
> return rc;
> }
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = msq->q_perm.key;
>
> /* Can this process write to the queue? */
> @@ -4820,14 +4820,14 @@ static int selinux_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
> {
> struct ipc_security_struct *isec;
> struct msg_security_struct *msec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = task_sid(target);
> int rc;
>
> isec = msq->q_perm.security;
> msec = msg->security;
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = msq->q_perm.key;
>
> rc = avc_has_perm(sid, isec->sid,
> @@ -4842,7 +4842,7 @@ static int selinux_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
> static int selinux_shm_alloc_security(struct shmid_kernel *shp)
> {
> struct ipc_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
> int rc;
>
> @@ -4852,7 +4852,7 @@ static int selinux_shm_alloc_security(struct shmid_kernel *shp)
>
> isec = shp->shm_perm.security;
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = shp->shm_perm.key;
>
> rc = avc_has_perm(sid, isec->sid, SECCLASS_SHM,
> @@ -4872,12 +4872,12 @@ static void selinux_shm_free_security(struct shmid_kernel *shp)
> static int selinux_shm_associate(struct shmid_kernel *shp, int shmflg)
> {
> struct ipc_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
>
> isec = shp->shm_perm.security;
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = shp->shm_perm.key;
>
> return avc_has_perm(sid, isec->sid, SECCLASS_SHM,
> @@ -4934,7 +4934,7 @@ static int selinux_shm_shmat(struct shmid_kernel *shp,
> static int selinux_sem_alloc_security(struct sem_array *sma)
> {
> struct ipc_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
> int rc;
>
> @@ -4944,7 +4944,7 @@ static int selinux_sem_alloc_security(struct sem_array *sma)
>
> isec = sma->sem_perm.security;
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = sma->sem_perm.key;
>
> rc = avc_has_perm(sid, isec->sid, SECCLASS_SEM,
> @@ -4964,12 +4964,12 @@ static void selinux_sem_free_security(struct sem_array *sma)
> static int selinux_sem_associate(struct sem_array *sma, int semflg)
> {
> struct ipc_security_struct *isec;
> - struct avc_audit_data ad;
> + struct common_audit_data ad;
> u32 sid = current_sid();
>
> isec = sma->sem_perm.security;
>
> - AVC_AUDIT_DATA_INIT(&ad, IPC);
> + COMMON_AUDIT_DATA_INIT(&ad, IPC);
> ad.u.ipc_id = sma->sem_perm.key;
>
> return avc_has_perm(sid, isec->sid, SECCLASS_SEM,
> diff --git a/security/selinux/include/avc.h b/security/selinux/include/avc.h
> index ae4c3a0..e94e82f 100644
> --- a/security/selinux/include/avc.h
> +++ b/security/selinux/include/avc.h
> @@ -13,6 +13,7 @@
> #include <linux/spinlock.h>
> #include <linux/init.h>
> #include <linux/audit.h>
> +#include <linux/lsm_audit.h>
> #include <linux/in6.h>
> #include <linux/path.h>
> #include <asm/system.h>
> @@ -36,48 +37,6 @@ struct inode;
> struct sock;
> struct sk_buff;
>
> -/* Auxiliary data to use in generating the audit record. */
> -struct avc_audit_data {
> - char type;
> -#define AVC_AUDIT_DATA_FS 1
> -#define AVC_AUDIT_DATA_NET 2
> -#define AVC_AUDIT_DATA_CAP 3
> -#define AVC_AUDIT_DATA_IPC 4
> - struct task_struct *tsk;
> - union {
> - struct {
> - struct path path;
> - struct inode *inode;
> - } fs;
> - struct {
> - int netif;
> - struct sock *sk;
> - u16 family;
> - __be16 dport;
> - __be16 sport;
> - union {
> - struct {
> - __be32 daddr;
> - __be32 saddr;
> - } v4;
> - struct {
> - struct in6_addr daddr;
> - struct in6_addr saddr;
> - } v6;
> - } fam;
> - } net;
> - int cap;
> - int ipc_id;
> - } u;
> -};
> -
> -#define v4info fam.v4
> -#define v6info fam.v6
> -
> -/* Initialize an AVC audit data structure. */
> -#define AVC_AUDIT_DATA_INIT(_d,_t) \
> - { memset((_d), 0, sizeof(struct avc_audit_data)); (_d)->type = AVC_AUDIT_DATA_##_t; }
> -
> /*
> * AVC statistics
> */
> @@ -98,7 +57,9 @@ void __init avc_init(void);
>
> void avc_audit(u32 ssid, u32 tsid,
> u16 tclass, u32 requested,
> - struct av_decision *avd, int result, struct avc_audit_data *auditdata);
> + struct av_decision *avd,
> + int result,
> + struct common_audit_data *a);
>
> #define AVC_STRICT 1 /* Ignore permissive mode. */
> int avc_has_perm_noaudit(u32 ssid, u32 tsid,
> @@ -108,7 +69,7 @@ int avc_has_perm_noaudit(u32 ssid, u32 tsid,
>
> int avc_has_perm(u32 ssid, u32 tsid,
> u16 tclass, u32 requested,
> - struct avc_audit_data *auditdata);
> + struct common_audit_data *auditdata);
>
> u32 avc_policy_seqno(void);
>
> diff --git a/security/selinux/include/netlabel.h b/security/selinux/include/netlabel.h
> index b4b5b9b..8d73842 100644
> --- a/security/selinux/include/netlabel.h
> +++ b/security/selinux/include/netlabel.h
> @@ -59,7 +59,7 @@ int selinux_netlbl_socket_post_create(struct sock *sk, u16 family);
> int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
> struct sk_buff *skb,
> u16 family,
> - struct avc_audit_data *ad);
> + struct common_audit_data *ad);
> int selinux_netlbl_socket_setsockopt(struct socket *sock,
> int level,
> int optname);
> @@ -129,7 +129,7 @@ static inline int selinux_netlbl_socket_post_create(struct sock *sk,
> static inline int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
> struct sk_buff *skb,
> u16 family,
> - struct avc_audit_data *ad)
> + struct common_audit_data *ad)
> {
> return 0;
> }
> diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h
> index 289e24b..13128f9 100644
> --- a/security/selinux/include/xfrm.h
> +++ b/security/selinux/include/xfrm.h
> @@ -41,9 +41,9 @@ static inline int selinux_xfrm_enabled(void)
> }
>
> int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb,
> - struct avc_audit_data *ad);
> + struct common_audit_data *ad);
> int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
> - struct avc_audit_data *ad, u8 proto);
> + struct common_audit_data *ad, u8 proto);
> int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
>
> static inline void selinux_xfrm_notify_policyload(void)
> @@ -57,13 +57,13 @@ static inline int selinux_xfrm_enabled(void)
> }
>
> static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
> - struct avc_audit_data *ad)
> + struct common_audit_data *ad)
> {
> return 0;
> }
>
> static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
> - struct avc_audit_data *ad, u8 proto)
> + struct common_audit_data *ad, u8 proto)
> {
> return 0;
> }
> diff --git a/security/selinux/netlabel.c b/security/selinux/netlabel.c
> index 2e98441..e688237 100644
> --- a/security/selinux/netlabel.c
> +++ b/security/selinux/netlabel.c
> @@ -342,7 +342,7 @@ int selinux_netlbl_socket_post_create(struct sock *sk, u16 family)
> int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
> struct sk_buff *skb,
> u16 family,
> - struct avc_audit_data *ad)
> + struct common_audit_data *ad)
> {
> int rc;
> u32 nlbl_sid;
> diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
> index 72b1845..f3cb9ed 100644
> --- a/security/selinux/xfrm.c
> +++ b/security/selinux/xfrm.c
> @@ -401,7 +401,7 @@ int selinux_xfrm_state_delete(struct xfrm_state *x)
> * gone thru the IPSec process.
> */
> int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
> - struct avc_audit_data *ad)
> + struct common_audit_data *ad)
> {
> int i, rc = 0;
> struct sec_path *sp;
> @@ -442,7 +442,7 @@ int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
> * checked in the selinux_xfrm_state_pol_flow_match hook above.
> */
> int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
> - struct avc_audit_data *ad, u8 proto)
> + struct common_audit_data *ad, u8 proto)
> {
> struct dst_entry *dst;
> int rc = 0;
>
>
>
> --
> This message was distributed to subscribers of the selinux mailing list.
> If you no longer wish to subscribe, send mail to majordomo@tycho.nsa.gov with
> the words "unsubscribe selinux" without quotes as the message.
--
Stephen Smalley
National Security Agency