Commit b749e3f8 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'audit.b59' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current

* 'audit.b59' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  [PATCH] fix broken timestamps in AVC generated by kernel threads
  [patch 1/1] audit: remove excess kernel-doc
  [PATCH] asm/generic: fix bug - kernel fails to build when enable some common audit code on Blackfin
  [PATCH] return records for fork() both to child and parent
  [PATCH] Audit: make audit=0 actually turn off audit
parents 6f8e5850 48887e63
#include <asm-generic/audit_dir_write.h>
__NR_acct,
#ifdef __NR_swapon
__NR_swapon,
#endif
__NR_quotactl,
__NR_truncate,
#ifdef __NR_truncate64
......
......@@ -391,6 +391,7 @@ extern int audit_classify_arch(int arch);
#ifdef CONFIG_AUDITSYSCALL
/* These are defined in auditsc.c */
/* Public API */
extern void audit_finish_fork(struct task_struct *child);
extern int audit_alloc(struct task_struct *task);
extern void audit_free(struct task_struct *task);
extern void audit_syscall_entry(int arch,
......@@ -434,7 +435,7 @@ static inline void audit_ptrace(struct task_struct *t)
/* Private API (for audit.c only) */
extern unsigned int audit_serial(void);
extern void auditsc_get_stamp(struct audit_context *ctx,
extern int auditsc_get_stamp(struct audit_context *ctx,
struct timespec *t, unsigned int *serial);
extern int audit_set_loginuid(struct task_struct *task, uid_t loginuid);
#define audit_get_loginuid(t) ((t)->loginuid)
......@@ -504,6 +505,7 @@ static inline int audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
extern int audit_n_rules;
extern int audit_signals;
#else
#define audit_finish_fork(t)
#define audit_alloc(t) ({ 0; })
#define audit_free(t) do { ; } while (0)
#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
......@@ -516,7 +518,7 @@ extern int audit_signals;
#define audit_inode(n,d) do { ; } while (0)
#define audit_inode_child(d,i,p) do { ; } while (0)
#define audit_core_dumps(i) do { ; } while (0)
#define auditsc_get_stamp(c,t,s) do { BUG(); } while (0)
#define auditsc_get_stamp(c,t,s) (0)
#define audit_get_loginuid(t) (-1)
#define audit_get_sessionid(t) (-1)
#define audit_log_task_context(b) do { ; } while (0)
......
......@@ -61,8 +61,11 @@
#include "audit.h"
/* No auditing will take place until audit_initialized != 0.
/* No auditing will take place until audit_initialized == AUDIT_INITIALIZED.
* (Initialization happens after skb_init is called.) */
#define AUDIT_DISABLED -1
#define AUDIT_UNINITIALIZED 0
#define AUDIT_INITIALIZED 1
static int audit_initialized;
#define AUDIT_OFF 0
......@@ -965,6 +968,9 @@ static int __init audit_init(void)
{
int i;
if (audit_initialized == AUDIT_DISABLED)
return 0;
printk(KERN_INFO "audit: initializing netlink socket (%s)\n",
audit_default ? "enabled" : "disabled");
audit_sock = netlink_kernel_create(&init_net, NETLINK_AUDIT, 0,
......@@ -976,7 +982,7 @@ static int __init audit_init(void)
skb_queue_head_init(&audit_skb_queue);
skb_queue_head_init(&audit_skb_hold_queue);
audit_initialized = 1;
audit_initialized = AUDIT_INITIALIZED;
audit_enabled = audit_default;
audit_ever_enabled |= !!audit_default;
......@@ -999,13 +1005,21 @@ __initcall(audit_init);
static int __init audit_enable(char *str)
{
audit_default = !!simple_strtol(str, NULL, 0);
printk(KERN_INFO "audit: %s%s\n",
audit_default ? "enabled" : "disabled",
audit_initialized ? "" : " (after initialization)");
if (audit_initialized) {
if (!audit_default)
audit_initialized = AUDIT_DISABLED;
printk(KERN_INFO "audit: %s", audit_default ? "enabled" : "disabled");
if (audit_initialized == AUDIT_INITIALIZED) {
audit_enabled = audit_default;
audit_ever_enabled |= !!audit_default;
} else if (audit_initialized == AUDIT_UNINITIALIZED) {
printk(" (after initialization)");
} else {
printk(" (until reboot)");
}
printk("\n");
return 1;
}
......@@ -1107,9 +1121,7 @@ unsigned int audit_serial(void)
static inline void audit_get_stamp(struct audit_context *ctx,
struct timespec *t, unsigned int *serial)
{
if (ctx)
auditsc_get_stamp(ctx, t, serial);
else {
if (!ctx || !auditsc_get_stamp(ctx, t, serial)) {
*t = CURRENT_TIME;
*serial = audit_serial();
}
......@@ -1146,7 +1158,7 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
int reserve;
unsigned long timeout_start = jiffies;
if (!audit_initialized)
if (audit_initialized != AUDIT_INITIALIZED)
return NULL;
if (unlikely(audit_filter_type(type)))
......
......@@ -1459,7 +1459,6 @@ void audit_free(struct task_struct *tsk)
/**
* audit_syscall_entry - fill in an audit record at syscall entry
* @tsk: task being audited
* @arch: architecture type
* @major: major syscall type (function)
* @a1: additional syscall register 1
......@@ -1548,9 +1547,25 @@ void audit_syscall_entry(int arch, int major,
context->ppid = 0;
}
void audit_finish_fork(struct task_struct *child)
{
struct audit_context *ctx = current->audit_context;
struct audit_context *p = child->audit_context;
if (!p || !ctx || !ctx->auditable)
return;
p->arch = ctx->arch;
p->major = ctx->major;
memcpy(p->argv, ctx->argv, sizeof(ctx->argv));
p->ctime = ctx->ctime;
p->dummy = ctx->dummy;
p->auditable = ctx->auditable;
p->in_syscall = ctx->in_syscall;
p->filterkey = kstrdup(ctx->filterkey, GFP_KERNEL);
p->ppid = current->pid;
}
/**
* audit_syscall_exit - deallocate audit context after a system call
* @tsk: task being audited
* @valid: success/failure flag
* @return_code: syscall return value
*
......@@ -1942,15 +1957,18 @@ EXPORT_SYMBOL_GPL(__audit_inode_child);
*
* Also sets the context as auditable.
*/
void auditsc_get_stamp(struct audit_context *ctx,
int auditsc_get_stamp(struct audit_context *ctx,
struct timespec *t, unsigned int *serial)
{
if (!ctx->in_syscall)
return 0;
if (!ctx->serial)
ctx->serial = audit_serial();
t->tv_sec = ctx->ctime.tv_sec;
t->tv_nsec = ctx->ctime.tv_nsec;
*serial = ctx->serial;
ctx->auditable = 1;
return 1;
}
/* global counter which is incremented every time something logs in */
......
......@@ -1398,6 +1398,7 @@ long do_fork(unsigned long clone_flags,
init_completion(&vfork);
}
audit_finish_fork(p);
tracehook_report_clone(trace, regs, clone_flags, nr, p);
/*
......
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