Commit fd76a74d authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'audit-pr-20200803' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit updates from Paul Moore:
 "Aside from some smaller bug fixes, here are the highlights:

   - add a new backlog wait metric to the audit status message, this is
     intended to help admins determine how long processes have been
     waiting for the audit backlog queue to clear

   - generate audit records for nftables configuration changes

   - generate CWD audit records for for the relevant LSM audit records"

* tag 'audit-pr-20200803' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: report audit wait metric in audit status reply
  audit: purge audit_log_string from the intra-kernel audit API
  audit: issue CWD record to accompany LSM_AUDIT_DATA_* records
  audit: use the proper gfp flags in the audit_log_nfcfg() calls
  audit: remove unused !CONFIG_AUDITSYSCALL __audit_inode* stubs
  audit: add gfp parameter to audit_log_nfcfg
  audit: log nftables configuration change events
  audit: Use struct_size() helper in alloc_chunk
parents 49e917de b43870c7
......@@ -12,6 +12,7 @@
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <uapi/linux/audit.h>
#include <uapi/linux/netfilter/nf_tables.h>
#define AUDIT_INO_UNSET ((unsigned long)-1)
#define AUDIT_DEV_UNSET ((dev_t)-1)
......@@ -98,6 +99,23 @@ enum audit_nfcfgop {
AUDIT_XT_OP_REGISTER,
AUDIT_XT_OP_REPLACE,
AUDIT_XT_OP_UNREGISTER,
AUDIT_NFT_OP_TABLE_REGISTER,
AUDIT_NFT_OP_TABLE_UNREGISTER,
AUDIT_NFT_OP_CHAIN_REGISTER,
AUDIT_NFT_OP_CHAIN_UNREGISTER,
AUDIT_NFT_OP_RULE_REGISTER,
AUDIT_NFT_OP_RULE_UNREGISTER,
AUDIT_NFT_OP_SET_REGISTER,
AUDIT_NFT_OP_SET_UNREGISTER,
AUDIT_NFT_OP_SETELEM_REGISTER,
AUDIT_NFT_OP_SETELEM_UNREGISTER,
AUDIT_NFT_OP_GEN_REGISTER,
AUDIT_NFT_OP_OBJ_REGISTER,
AUDIT_NFT_OP_OBJ_UNREGISTER,
AUDIT_NFT_OP_OBJ_RESET,
AUDIT_NFT_OP_FLOWTABLE_REGISTER,
AUDIT_NFT_OP_FLOWTABLE_UNREGISTER,
AUDIT_NFT_OP_INVALID,
};
extern int is_audit_feature_set(int which);
......@@ -274,7 +292,7 @@ extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1,
extern void __audit_syscall_exit(int ret_success, long ret_value);
extern struct filename *__audit_reusename(const __user char *uptr);
extern void __audit_getname(struct filename *name);
extern void __audit_getcwd(void);
extern void __audit_inode(struct filename *name, const struct dentry *dentry,
unsigned int flags);
extern void __audit_file(const struct file *);
......@@ -333,6 +351,11 @@ static inline void audit_getname(struct filename *name)
if (unlikely(!audit_dummy_context()))
__audit_getname(name);
}
static inline void audit_getcwd(void)
{
if (unlikely(audit_context()))
__audit_getcwd();
}
static inline void audit_inode(struct filename *name,
const struct dentry *dentry,
unsigned int aflags) {
......@@ -386,7 +409,7 @@ extern void __audit_fanotify(unsigned int response);
extern void __audit_tk_injoffset(struct timespec64 offset);
extern void __audit_ntp_log(const struct audit_ntp_data *ad);
extern void __audit_log_nfcfg(const char *name, u8 af, unsigned int nentries,
enum audit_nfcfgop op);
enum audit_nfcfgop op, gfp_t gfp);
static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
{
......@@ -524,10 +547,10 @@ static inline void audit_ntp_log(const struct audit_ntp_data *ad)
static inline void audit_log_nfcfg(const char *name, u8 af,
unsigned int nentries,
enum audit_nfcfgop op)
enum audit_nfcfgop op, gfp_t gfp)
{
if (audit_enabled)
__audit_log_nfcfg(name, af, nentries, op);
__audit_log_nfcfg(name, af, nentries, op, gfp);
}
extern int audit_n_rules;
......@@ -561,13 +584,7 @@ static inline struct filename *audit_reusename(const __user char *name)
}
static inline void audit_getname(struct filename *name)
{ }
static inline void __audit_inode(struct filename *name,
const struct dentry *dentry,
unsigned int flags)
{ }
static inline void __audit_inode_child(struct inode *parent,
const struct dentry *dentry,
const unsigned char type)
static inline void audit_getcwd(void)
{ }
static inline void audit_inode(struct filename *name,
const struct dentry *dentry,
......@@ -665,7 +682,7 @@ static inline void audit_ptrace(struct task_struct *t)
static inline void audit_log_nfcfg(const char *name, u8 af,
unsigned int nentries,
enum audit_nfcfgop op)
enum audit_nfcfgop op, gfp_t gfp)
{ }
#define audit_n_rules 0
......@@ -677,9 +694,4 @@ static inline bool audit_loginuid_set(struct task_struct *tsk)
return uid_valid(audit_get_loginuid(tsk));
}
static inline void audit_log_string(struct audit_buffer *ab, const char *buf)
{
audit_log_n_string(ab, buf, strlen(buf));
}
#endif
......@@ -341,6 +341,7 @@ enum {
#define AUDIT_STATUS_BACKLOG_LIMIT 0x0010
#define AUDIT_STATUS_BACKLOG_WAIT_TIME 0x0020
#define AUDIT_STATUS_LOST 0x0040
#define AUDIT_STATUS_BACKLOG_WAIT_TIME_ACTUAL 0x0080
#define AUDIT_FEATURE_BITMAP_BACKLOG_LIMIT 0x00000001
#define AUDIT_FEATURE_BITMAP_BACKLOG_WAIT_TIME 0x00000002
......@@ -467,6 +468,9 @@ struct audit_status {
__u32 feature_bitmap; /* bitmap of kernel audit features */
};
__u32 backlog_wait_time;/* message queue wait timeout */
__u32 backlog_wait_time_actual;/* time spent waiting while
* message limit exceeded
*/
};
struct audit_features {
......
......@@ -136,6 +136,11 @@ u32 audit_sig_sid = 0;
*/
static atomic_t audit_lost = ATOMIC_INIT(0);
/* Monotonically increasing sum of time the kernel has spent
* waiting while the backlog limit is exceeded.
*/
static atomic_t audit_backlog_wait_time_actual = ATOMIC_INIT(0);
/* Hash for inode-based rules */
struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS];
......@@ -1212,6 +1217,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
s.backlog = skb_queue_len(&audit_queue);
s.feature_bitmap = AUDIT_FEATURE_BITMAP_ALL;
s.backlog_wait_time = audit_backlog_wait_time;
s.backlog_wait_time_actual = atomic_read(&audit_backlog_wait_time_actual);
audit_send_reply(skb, seq, AUDIT_GET, 0, 0, &s, sizeof(s));
break;
}
......@@ -1315,6 +1321,12 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
audit_log_config_change("lost", 0, lost, 1);
return lost;
}
if (s.mask == AUDIT_STATUS_BACKLOG_WAIT_TIME_ACTUAL) {
u32 actual = atomic_xchg(&audit_backlog_wait_time_actual, 0);
audit_log_config_change("backlog_wait_time_actual", 0, actual, 1);
return actual;
}
break;
}
case AUDIT_GET_FEATURE:
......@@ -1826,12 +1838,15 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
/* sleep if we are allowed and we haven't exhausted our
* backlog wait limit */
if (gfpflags_allow_blocking(gfp_mask) && (stime > 0)) {
long rtime = stime;
DECLARE_WAITQUEUE(wait, current);
add_wait_queue_exclusive(&audit_backlog_wait,
&wait);
set_current_state(TASK_UNINTERRUPTIBLE);
stime = schedule_timeout(stime);
stime = schedule_timeout(rtime);
atomic_add(rtime - stime, &audit_backlog_wait_time_actual);
remove_wait_queue(&audit_backlog_wait, &wait);
} else {
if (audit_rate_check() && printk_ratelimit())
......@@ -2079,13 +2094,13 @@ void audit_log_d_path(struct audit_buffer *ab, const char *prefix,
/* We will allow 11 spaces for ' (deleted)' to be appended */
pathname = kmalloc(PATH_MAX+11, ab->gfp_mask);
if (!pathname) {
audit_log_string(ab, "<no_memory>");
audit_log_format(ab, "\"<no_memory>\"");
return;
}
p = d_path(path, pathname, PATH_MAX+11);
if (IS_ERR(p)) { /* Should never happen since we send PATH_MAX */
/* FIXME: can we save some information here? */
audit_log_string(ab, "<too_long>");
audit_log_format(ab, "\"<too_long>\"");
} else
audit_log_untrustedstring(ab, p);
kfree(pathname);
......
......@@ -188,11 +188,9 @@ static struct fsnotify_mark *alloc_mark(void)
static struct audit_chunk *alloc_chunk(int count)
{
struct audit_chunk *chunk;
size_t size;
int i;
size = offsetof(struct audit_chunk, owners) + count * sizeof(struct node);
chunk = kzalloc(size, GFP_KERNEL);
chunk = kzalloc(struct_size(chunk, owners, count), GFP_KERNEL);
if (!chunk)
return NULL;
......
......@@ -75,6 +75,7 @@
#include <linux/uaccess.h>
#include <linux/fsnotify_backend.h>
#include <uapi/linux/limits.h>
#include <uapi/linux/netfilter/nf_tables.h>
#include "audit.h"
......@@ -136,9 +137,26 @@ struct audit_nfcfgop_tab {
};
static const struct audit_nfcfgop_tab audit_nfcfgs[] = {
{ AUDIT_XT_OP_REGISTER, "register" },
{ AUDIT_XT_OP_REPLACE, "replace" },
{ AUDIT_XT_OP_UNREGISTER, "unregister" },
{ AUDIT_XT_OP_REGISTER, "xt_register" },
{ AUDIT_XT_OP_REPLACE, "xt_replace" },
{ AUDIT_XT_OP_UNREGISTER, "xt_unregister" },
{ AUDIT_NFT_OP_TABLE_REGISTER, "nft_register_table" },
{ AUDIT_NFT_OP_TABLE_UNREGISTER, "nft_unregister_table" },
{ AUDIT_NFT_OP_CHAIN_REGISTER, "nft_register_chain" },
{ AUDIT_NFT_OP_CHAIN_UNREGISTER, "nft_unregister_chain" },
{ AUDIT_NFT_OP_RULE_REGISTER, "nft_register_rule" },
{ AUDIT_NFT_OP_RULE_UNREGISTER, "nft_unregister_rule" },
{ AUDIT_NFT_OP_SET_REGISTER, "nft_register_set" },
{ AUDIT_NFT_OP_SET_UNREGISTER, "nft_unregister_set" },
{ AUDIT_NFT_OP_SETELEM_REGISTER, "nft_register_setelem" },
{ AUDIT_NFT_OP_SETELEM_UNREGISTER, "nft_unregister_setelem" },
{ AUDIT_NFT_OP_GEN_REGISTER, "nft_register_gen" },
{ AUDIT_NFT_OP_OBJ_REGISTER, "nft_register_obj" },
{ AUDIT_NFT_OP_OBJ_UNREGISTER, "nft_unregister_obj" },
{ AUDIT_NFT_OP_OBJ_RESET, "nft_reset_obj" },
{ AUDIT_NFT_OP_FLOWTABLE_REGISTER, "nft_register_flowtable" },
{ AUDIT_NFT_OP_FLOWTABLE_UNREGISTER, "nft_unregister_flowtable" },
{ AUDIT_NFT_OP_INVALID, "nft_invalid" },
};
static int audit_match_perm(struct audit_context *ctx, int mask)
......@@ -1876,6 +1894,20 @@ __audit_reusename(const __user char *uptr)
return NULL;
}
inline void _audit_getcwd(struct audit_context *context)
{
if (!context->pwd.dentry)
get_fs_pwd(current->fs, &context->pwd);
}
void __audit_getcwd(void)
{
struct audit_context *context = audit_context();
if (context->in_syscall)
_audit_getcwd(context);
}
/**
* __audit_getname - add a name to the list
* @name: name to add
......@@ -1900,8 +1932,7 @@ void __audit_getname(struct filename *name)
name->aname = n;
name->refcnt++;
if (!context->pwd.dentry)
get_fs_pwd(current->fs, &context->pwd);
_audit_getcwd(context);
}
static inline int audit_copy_fcaps(struct audit_names *name,
......@@ -2557,12 +2588,12 @@ void __audit_ntp_log(const struct audit_ntp_data *ad)
}
void __audit_log_nfcfg(const char *name, u8 af, unsigned int nentries,
enum audit_nfcfgop op)
enum audit_nfcfgop op, gfp_t gfp)
{
struct audit_buffer *ab;
char comm[sizeof(current->comm)];
ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_NETFILTER_CFG);
ab = audit_log_start(audit_context(), gfp, AUDIT_NETFILTER_CFG);
if (!ab)
return;
audit_log_format(ab, "table=%s family=%u entries=%u op=%s",
......
......@@ -1047,7 +1047,7 @@ static int do_replace_finish(struct net *net, struct ebt_replace *repl,
vfree(counterstmp);
audit_log_nfcfg(repl->name, AF_BRIDGE, repl->nentries,
AUDIT_XT_OP_REPLACE);
AUDIT_XT_OP_REPLACE, GFP_KERNEL);
return ret;
free_unlock:
......@@ -1123,7 +1123,7 @@ static void __ebt_unregister_table(struct net *net, struct ebt_table *table)
list_del(&table->list);
mutex_unlock(&ebt_mutex);
audit_log_nfcfg(table->name, AF_BRIDGE, table->private->nentries,
AUDIT_XT_OP_UNREGISTER);
AUDIT_XT_OP_UNREGISTER, GFP_KERNEL);
EBT_ENTRY_ITERATE(table->private->entries, table->private->entries_size,
ebt_cleanup_entry, net, NULL);
if (table->private->nentries)
......@@ -1218,7 +1218,7 @@ int ebt_register_table(struct net *net, const struct ebt_table *input_table,
}
audit_log_nfcfg(repl->name, AF_BRIDGE, repl->nentries,
AUDIT_XT_OP_REGISTER);
AUDIT_XT_OP_REGISTER, GFP_KERNEL);
return ret;
free_unlock:
mutex_unlock(&ebt_mutex);
......
......@@ -12,6 +12,7 @@
#include <linux/netlink.h>
#include <linux/vmalloc.h>
#include <linux/rhashtable.h>
#include <linux/audit.h>
#include <linux/netfilter.h>
#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nf_tables.h>
......@@ -681,6 +682,17 @@ static void nf_tables_table_notify(const struct nft_ctx *ctx, int event)
{
struct sk_buff *skb;
int err;
char *buf = kasprintf(GFP_KERNEL, "%s:%llu;?:0",
ctx->table->name, ctx->table->handle);
audit_log_nfcfg(buf,
ctx->family,
ctx->table->use,
event == NFT_MSG_NEWTABLE ?
AUDIT_NFT_OP_TABLE_REGISTER :
AUDIT_NFT_OP_TABLE_UNREGISTER,
GFP_KERNEL);
kfree(buf);
if (!ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
......@@ -1415,6 +1427,18 @@ static void nf_tables_chain_notify(const struct nft_ctx *ctx, int event)
{
struct sk_buff *skb;
int err;
char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu",
ctx->table->name, ctx->table->handle,
ctx->chain->name, ctx->chain->handle);
audit_log_nfcfg(buf,
ctx->family,
ctx->chain->use,
event == NFT_MSG_NEWCHAIN ?
AUDIT_NFT_OP_CHAIN_REGISTER :
AUDIT_NFT_OP_CHAIN_UNREGISTER,
GFP_KERNEL);
kfree(buf);
if (!ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
......@@ -2680,6 +2704,18 @@ static void nf_tables_rule_notify(const struct nft_ctx *ctx,
{
struct sk_buff *skb;
int err;
char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu",
ctx->table->name, ctx->table->handle,
ctx->chain->name, ctx->chain->handle);
audit_log_nfcfg(buf,
ctx->family,
rule->handle,
event == NFT_MSG_NEWRULE ?
AUDIT_NFT_OP_RULE_REGISTER :
AUDIT_NFT_OP_RULE_UNREGISTER,
GFP_KERNEL);
kfree(buf);
if (!ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
......@@ -3682,6 +3718,18 @@ static void nf_tables_set_notify(const struct nft_ctx *ctx,
struct sk_buff *skb;
u32 portid = ctx->portid;
int err;
char *buf = kasprintf(gfp_flags, "%s:%llu;%s:%llu",
ctx->table->name, ctx->table->handle,
set->name, set->handle);
audit_log_nfcfg(buf,
ctx->family,
set->field_count,
event == NFT_MSG_NEWSET ?
AUDIT_NFT_OP_SET_REGISTER :
AUDIT_NFT_OP_SET_UNREGISTER,
gfp_flags);
kfree(buf);
if (!ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
......@@ -4798,6 +4846,18 @@ static void nf_tables_setelem_notify(const struct nft_ctx *ctx,
u32 portid = ctx->portid;
struct sk_buff *skb;
int err;
char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu",
ctx->table->name, ctx->table->handle,
set->name, set->handle);
audit_log_nfcfg(buf,
ctx->family,
set->handle,
event == NFT_MSG_NEWSETELEM ?
AUDIT_NFT_OP_SETELEM_REGISTER :
AUDIT_NFT_OP_SETELEM_UNREGISTER,
GFP_KERNEL);
kfree(buf);
if (!ctx->report && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES))
return;
......@@ -5879,6 +5939,20 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
obj->ops->type->type != filter->type)
goto cont;
if (reset) {
char *buf = kasprintf(GFP_ATOMIC,
"%s:%llu;?:0",
table->name,
table->handle);
audit_log_nfcfg(buf,
family,
obj->handle,
AUDIT_NFT_OP_OBJ_RESET,
GFP_ATOMIC);
kfree(buf);
}
if (nf_tables_fill_obj_info(skb, net, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
NFT_MSG_NEWOBJ,
......@@ -5989,6 +6063,18 @@ static int nf_tables_getobj(struct net *net, struct sock *nlsk,
if (NFNL_MSG_TYPE(nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET)
reset = true;
if (reset) {
char *buf = kasprintf(GFP_ATOMIC, "%s:%llu;?:0",
table->name, table->handle);
audit_log_nfcfg(buf,
family,
obj->handle,
AUDIT_NFT_OP_OBJ_RESET,
GFP_ATOMIC);
kfree(buf);
}
err = nf_tables_fill_obj_info(skb2, net, NETLINK_CB(skb).portid,
nlh->nlmsg_seq, NFT_MSG_NEWOBJ, 0,
family, table, obj, reset);
......@@ -6064,6 +6150,17 @@ void nft_obj_notify(struct net *net, const struct nft_table *table,
{
struct sk_buff *skb;
int err;
char *buf = kasprintf(gfp, "%s:%llu;?:0",
table->name, table->handle);
audit_log_nfcfg(buf,
family,
obj->handle,
event == NFT_MSG_NEWOBJ ?
AUDIT_NFT_OP_OBJ_REGISTER :
AUDIT_NFT_OP_OBJ_UNREGISTER,
gfp);
kfree(buf);
if (!report &&
!nfnetlink_has_listeners(net, NFNLGRP_NFTABLES))
......@@ -6860,6 +6957,18 @@ static void nf_tables_flowtable_notify(struct nft_ctx *ctx,
{
struct sk_buff *skb;
int err;
char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu",
flowtable->table->name, flowtable->table->handle,
flowtable->name, flowtable->handle);
audit_log_nfcfg(buf,
ctx->family,
flowtable->hooknum,
event == NFT_MSG_NEWFLOWTABLE ?
AUDIT_NFT_OP_FLOWTABLE_REGISTER :
AUDIT_NFT_OP_FLOWTABLE_UNREGISTER,
GFP_KERNEL);
kfree(buf);
if (ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
......@@ -6981,6 +7090,9 @@ static void nf_tables_gen_notify(struct net *net, struct sk_buff *skb,
struct sk_buff *skb2;
int err;
audit_log_nfcfg("?:0;?:0", 0, net->nft.base_seq,
AUDIT_NFT_OP_GEN_REGISTER, GFP_KERNEL);
if (nlmsg_report(nlh) &&
!nfnetlink_has_listeners(net, NFNLGRP_NFTABLES))
return;
......
......@@ -1410,7 +1410,8 @@ xt_replace_table(struct xt_table *table,
audit_log_nfcfg(table->name, table->af, private->number,
!private->number ? AUDIT_XT_OP_REGISTER :
AUDIT_XT_OP_REPLACE);
AUDIT_XT_OP_REPLACE,
GFP_KERNEL);
return private;
}
EXPORT_SYMBOL_GPL(xt_replace_table);
......@@ -1473,7 +1474,7 @@ void *xt_unregister_table(struct xt_table *table)
list_del(&table->list);
mutex_unlock(&xt[table->af].mutex);
audit_log_nfcfg(table->name, table->af, private->number,
AUDIT_XT_OP_UNREGISTER);
AUDIT_XT_OP_UNREGISTER, GFP_KERNEL);
kfree(table);
return private;
......
......@@ -57,18 +57,16 @@ static void audit_pre(struct audit_buffer *ab, void *ca)
struct common_audit_data *sa = ca;
if (aa_g_audit_header) {
audit_log_format(ab, "apparmor=");
audit_log_string(ab, aa_audit_type[aad(sa)->type]);
audit_log_format(ab, "apparmor=\"%s\"",
aa_audit_type[aad(sa)->type]);
}
if (aad(sa)->op) {
audit_log_format(ab, " operation=");
audit_log_string(ab, aad(sa)->op);
audit_log_format(ab, " operation=\"%s\"", aad(sa)->op);
}
if (aad(sa)->info) {
audit_log_format(ab, " info=");
audit_log_string(ab, aad(sa)->info);
audit_log_format(ab, " info=\"%s\"", aad(sa)->info);
if (aad(sa)->error)
audit_log_format(ab, " error=%d", aad(sa)->error);
}
......
......@@ -34,20 +34,6 @@ static u32 map_mask_to_chr_mask(u32 mask)
return m;
}
/**
* audit_file_mask - convert mask to permission string
* @buffer: buffer to write string to (NOT NULL)
* @mask: permission mask to convert
*/
static void audit_file_mask(struct audit_buffer *ab, u32 mask)
{
char str[10];
aa_perm_mask_to_str(str, sizeof(str), aa_file_perm_chrs,
map_mask_to_chr_mask(mask));
audit_log_string(ab, str);
}
/**
* file_audit_cb - call back for file specific audit fields
* @ab: audit_buffer (NOT NULL)
......@@ -57,14 +43,17 @@ static void file_audit_cb(struct audit_buffer *ab, void *va)
{
struct common_audit_data *sa = va;
kuid_t fsuid = current_fsuid();
char str[10];
if (aad(sa)->request & AA_AUDIT_FILE_MASK) {
audit_log_format(ab, " requested_mask=");
audit_file_mask(ab, aad(sa)->request);
aa_perm_mask_to_str(str, sizeof(str), aa_file_perm_chrs,
map_mask_to_chr_mask(aad(sa)->request));
audit_log_format(ab, " requested_mask=\"%s\"", str);
}
if (aad(sa)->denied & AA_AUDIT_FILE_MASK) {
audit_log_format(ab, " denied_mask=");
audit_file_mask(ab, aad(sa)->denied);
aa_perm_mask_to_str(str, sizeof(str), aa_file_perm_chrs,
map_mask_to_chr_mask(aad(sa)->denied));
audit_log_format(ab, " denied_mask=\"%s\"", str);
}
if (aad(sa)->request & AA_AUDIT_FILE_MASK) {
audit_log_format(ab, " fsuid=%d",
......
......@@ -20,25 +20,23 @@
/**
* audit_ptrace_mask - convert mask to permission string
* @buffer: buffer to write string to (NOT NULL)
* @mask: permission mask to convert
*
* Returns: pointer to static string
*/
static void audit_ptrace_mask(struct audit_buffer *ab, u32 mask)
static const char *audit_ptrace_mask(u32 mask)
{
switch (mask) {
case MAY_READ:
audit_log_string(ab, "read");
break;
return "read";
case MAY_WRITE:
audit_log_string(ab, "trace");
break;
return "trace";
case AA_MAY_BE_READ:
audit_log_string(ab, "readby");
break;
return "readby";
case AA_MAY_BE_TRACED:
audit_log_string(ab, "tracedby");
break;
return "tracedby";
}
return "";
}
/* call back to audit ptrace fields */
......@@ -47,12 +45,12 @@ static void audit_ptrace_cb(struct audit_buffer *ab, void *va)
struct common_audit_data *sa = va;
if (aad(sa)->request & AA_PTRACE_PERM_MASK) {
audit_log_format(ab, " requested_mask=");
audit_ptrace_mask(ab, aad(sa)->request);
audit_log_format(ab, " requested_mask=\"%s\"",
audit_ptrace_mask(aad(sa)->request));
if (aad(sa)->denied & AA_PTRACE_PERM_MASK) {
audit_log_format(ab, " denied_mask=");
audit_ptrace_mask(ab, aad(sa)->denied);
audit_log_format(ab, " denied_mask=\"%s\"",
audit_ptrace_mask(aad(sa)->denied));
}
}
audit_log_format(ab, " peer=");
......@@ -142,16 +140,18 @@ static inline int map_signal_num(int sig)
}
/**
* audit_file_mask - convert mask to permission string
* @buffer: buffer to write string to (NOT NULL)
* audit_signal_mask - convert mask to permission string
* @mask: permission mask to convert
*
* Returns: pointer to static string
*/
static void audit_signal_mask(struct audit_buffer *ab, u32 mask)
static const char *audit_signal_mask(u32 mask)
{
if (mask & MAY_READ)
audit_log_string(ab, "receive");
return "receive";
if (mask & MAY_WRITE)
audit_log_string(ab, "send");
return "send";
return "";
}
/**
......@@ -164,11 +164,11 @@ static void audit_signal_cb(struct audit_buffer *ab, void *va)
struct common_audit_data *sa = va;
if (aad(sa)->request & AA_SIGNAL_PERM_MASK) {
audit_log_format(ab, " requested_mask=");
audit_signal_mask(ab, aad(sa)->request);
audit_log_format(ab, " requested_mask=\"%s\"",
audit_signal_mask(aad(sa)->request));
if (aad(sa)->denied & AA_SIGNAL_PERM_MASK) {
audit_log_format(ab, " denied_mask=");
audit_signal_mask(ab, aad(sa)->denied);
audit_log_format(ab, " denied_mask=\"%s\"",
audit_signal_mask(aad(sa)->denied));
}
}
if (aad(sa)->signal == SIGUNKNOWN)
......
......@@ -72,16 +72,18 @@ void audit_net_cb(struct audit_buffer *ab, void *va)
{
struct common_audit_data *sa = va;
audit_log_format(ab, " family=");
if (address_family_names[sa->u.net->family])
audit_log_string(ab, address_family_names[sa->u.net->family]);
audit_log_format(ab, " family=\"%s\"",
address_family_names[sa->u.net->family]);
else
audit_log_format(ab, "\"unknown(%d)\"", sa->u.net->family);
audit_log_format(ab, " sock_type=");
audit_log_format(ab, " family=\"unknown(%d)\"",
sa->u.net->family);
if (sock_type_names[aad(sa)->net.type])
audit_log_string(ab, sock_type_names[aad(sa)->net.type]);
audit_log_format(ab, " sock_type=\"%s\"",
sock_type_names[aad(sa)->net.type]);
else
audit_log_format(ab, "\"unknown(%d)\"", aad(sa)->net.type);
audit_log_format(ab, " sock_type=\"unknown(%d)\"",
aad(sa)->net.type);
audit_log_format(ab, " protocol=%d", aad(sa)->net.protocol);
if (aad(sa)->request & NET_PERMS_MASK) {
......
......@@ -241,6 +241,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
audit_log_untrustedstring(ab, inode->i_sb->s_id);
audit_log_format(ab, " ino=%lu", inode->i_ino);
}
audit_getcwd();
break;
}
case LSM_AUDIT_DATA_FILE: {
......@@ -254,6 +255,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
audit_log_untrustedstring(ab, inode->i_sb->s_id);
audit_log_format(ab, " ino=%lu", inode->i_ino);
}
audit_getcwd();
break;
}
case LSM_AUDIT_DATA_IOCTL_OP: {
......@@ -269,6 +271,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
}
audit_log_format(ab, " ioctlcmd=0x%hx", a->u.op->cmd);
audit_getcwd();
break;
}
case LSM_AUDIT_DATA_DENTRY: {
......@@ -283,6 +286,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
audit_log_untrustedstring(ab, inode->i_sb->s_id);
audit_log_format(ab, " ino=%lu", inode->i_ino);
}
audit_getcwd();
break;
}
case LSM_AUDIT_DATA_INODE: {
......@@ -300,6 +304,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
audit_log_format(ab, " dev=");
audit_log_untrustedstring(ab, inode->i_sb->s_id);
audit_log_format(ab, " ino=%lu", inode->i_ino);
audit_getcwd();
break;
}
case LSM_AUDIT_DATA_TASK: {
......@@ -427,8 +432,8 @@ static void dump_common_audit_data(struct audit_buffer *ab,
a->u.ibendport->port);
break;
case LSM_AUDIT_DATA_LOCKDOWN:
audit_log_format(ab, " lockdown_reason=");
audit_log_string(ab, lockdown_reasons[a->u.reason]);
audit_log_format(ab, " lockdown_reason=\"%s\"",
lockdown_reasons[a->u.reason]);
break;
} /* switch (a->type) */
}
......
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