aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@g5.osdl.org>2006-05-01 21:43:05 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-05-01 21:43:05 -0700
commit532f57da408c5a5710075d17047e2d97bdfd22f3 (patch)
tree3fb378bea1816f637aeeed0df805d0c30969cfc3
parent46c5ea3c9ae7fbc6e52a13c92e59d4fc7f4ca80a (diff)
parent2ad312d2093ae506ae0fa184d8d026b559083087 (diff)
Merge branch 'audit.b10' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current
* 'audit.b10' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] Audit Filter Performance [PATCH] Rework of IPC auditing [PATCH] More user space subject labels [PATCH] Reworked patch for labels on user space messages [PATCH] change lspp ipc auditing [PATCH] audit inode patch [PATCH] support for context based audit filtering, part 2 [PATCH] support for context based audit filtering [PATCH] no need to wank with task_lock() and pinning task down in audit_syscall_exit() [PATCH] drop task argument of audit_syscall_{entry,exit} [PATCH] drop gfp_mask in audit_log_exit() [PATCH] move call of audit_free() into do_exit() [PATCH] sockaddr patch [PATCH] deal with deadlocks in audit_free()
-rw-r--r--arch/i386/kernel/ptrace.c7
-rw-r--r--arch/i386/kernel/vm86.c2
-rw-r--r--arch/ia64/kernel/ptrace.c4
-rw-r--r--arch/mips/kernel/ptrace.c4
-rw-r--r--arch/powerpc/kernel/ptrace.c5
-rw-r--r--arch/s390/kernel/ptrace.c5
-rw-r--r--arch/sparc64/kernel/ptrace.c5
-rw-r--r--arch/um/kernel/ptrace.c6
-rw-r--r--arch/x86_64/kernel/ptrace.c6
-rw-r--r--include/linux/audit.h22
-rw-r--r--include/linux/netlink.h1
-rw-r--r--include/linux/security.h16
-rw-r--r--include/linux/selinux.h177
-rw-r--r--ipc/msg.c11
-rw-r--r--ipc/sem.c11
-rw-r--r--ipc/shm.c19
-rw-r--r--ipc/util.c7
-rw-r--r--kernel/audit.c160
-rw-r--r--kernel/audit.h10
-rw-r--r--kernel/auditfilter.c289
-rw-r--r--kernel/auditsc.c269
-rw-r--r--kernel/exit.c3
-rw-r--r--kernel/fork.c2
-rw-r--r--net/netlink/af_netlink.c2
-rw-r--r--net/socket.c2
-rw-r--r--security/dummy.c6
-rw-r--r--security/selinux/Makefile2
-rw-r--r--security/selinux/avc.c13
-rw-r--r--security/selinux/exports.c74
-rw-r--r--security/selinux/hooks.c8
-rw-r--r--security/selinux/ss/mls.c30
-rw-r--r--security/selinux/ss/mls.h4
-rw-r--r--security/selinux/ss/services.c235
33 files changed, 1142 insertions, 275 deletions
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c
index 506462ef36a..fd7eaf7866e 100644
--- a/arch/i386/kernel/ptrace.c
+++ b/arch/i386/kernel/ptrace.c
@@ -671,7 +671,7 @@ int do_syscall_trace(struct pt_regs *regs, int entryexit)
if (unlikely(current->audit_context)) {
if (entryexit)
- audit_syscall_exit(current, AUDITSC_RESULT(regs->eax),
+ audit_syscall_exit(AUDITSC_RESULT(regs->eax),
regs->eax);
/* Debug traps, when using PTRACE_SINGLESTEP, must be sent only
* on the syscall exit path. Normally, when TIF_SYSCALL_AUDIT is
@@ -720,14 +720,13 @@ int do_syscall_trace(struct pt_regs *regs, int entryexit)
ret = is_sysemu;
out:
if (unlikely(current->audit_context) && !entryexit)
- audit_syscall_entry(current, AUDIT_ARCH_I386, regs->orig_eax,
+ audit_syscall_entry(AUDIT_ARCH_I386, regs->orig_eax,
regs->ebx, regs->ecx, regs->edx, regs->esi);
if (ret == 0)
return 0;
regs->orig_eax = -1; /* force skip of syscall restarting */
if (unlikely(current->audit_context))
- audit_syscall_exit(current, AUDITSC_RESULT(regs->eax),
- regs->eax);
+ audit_syscall_exit(AUDITSC_RESULT(regs->eax), regs->eax);
return 1;
}
diff --git a/arch/i386/kernel/vm86.c b/arch/i386/kernel/vm86.c
index aee14fafd13..00e0118e717 100644
--- a/arch/i386/kernel/vm86.c
+++ b/arch/i386/kernel/vm86.c
@@ -312,7 +312,7 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
/*call audit_syscall_exit since we do not exit via the normal paths */
if (unlikely(current->audit_context))
- audit_syscall_exit(current, AUDITSC_RESULT(eax), eax);
+ audit_syscall_exit(AUDITSC_RESULT(eax), eax);
__asm__ __volatile__(
"movl %0,%%esp\n\t"
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 9887c8787e7..e61e15e28d8 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1644,7 +1644,7 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
arch = AUDIT_ARCH_IA64;
}
- audit_syscall_entry(current, arch, syscall, arg0, arg1, arg2, arg3);
+ audit_syscall_entry(arch, syscall, arg0, arg1, arg2, arg3);
}
}
@@ -1662,7 +1662,7 @@ syscall_trace_leave (long arg0, long arg1, long arg2, long arg3,
if (success != AUDITSC_SUCCESS)
result = -result;
- audit_syscall_exit(current, success, result);
+ audit_syscall_exit(success, result);
}
if (test_thread_flag(TIF_SYSCALL_TRACE)
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index f3106d0771b..9b4733c1239 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -483,7 +483,7 @@ static inline int audit_arch(void)
asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
{
if (unlikely(current->audit_context) && entryexit)
- audit_syscall_exit(current, AUDITSC_RESULT(regs->regs[2]),
+ audit_syscall_exit(AUDITSC_RESULT(regs->regs[2]),
regs->regs[2]);
if (!(current->ptrace & PT_PTRACED))
@@ -507,7 +507,7 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
}
out:
if (unlikely(current->audit_context) && !entryexit)
- audit_syscall_entry(current, audit_arch(), regs->regs[2],
+ audit_syscall_entry(audit_arch(), regs->regs[2],
regs->regs[4], regs->regs[5],
regs->regs[6], regs->regs[7]);
}
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index bcb83574335..4a677d1bd4e 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -538,7 +538,7 @@ void do_syscall_trace_enter(struct pt_regs *regs)
do_syscall_trace();
if (unlikely(current->audit_context))
- audit_syscall_entry(current,
+ audit_syscall_entry(
#ifdef CONFIG_PPC32
AUDIT_ARCH_PPC,
#else
@@ -556,8 +556,7 @@ void do_syscall_trace_leave(struct pt_regs *regs)
#endif
if (unlikely(current->audit_context))
- audit_syscall_exit(current,
- (regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
+ audit_syscall_exit((regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
regs->result);
if ((test_thread_flag(TIF_SYSCALL_TRACE)
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 37dfe33dab7..8f36504075e 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -734,7 +734,7 @@ asmlinkage void
syscall_trace(struct pt_regs *regs, int entryexit)
{
if (unlikely(current->audit_context) && entryexit)
- audit_syscall_exit(current, AUDITSC_RESULT(regs->gprs[2]), regs->gprs[2]);
+ audit_syscall_exit(AUDITSC_RESULT(regs->gprs[2]), regs->gprs[2]);
if (!test_thread_flag(TIF_SYSCALL_TRACE))
goto out;
@@ -761,8 +761,7 @@ syscall_trace(struct pt_regs *regs, int entryexit)
}
out:
if (unlikely(current->audit_context) && !entryexit)
- audit_syscall_entry(current,
- test_thread_flag(TIF_31BIT)?AUDIT_ARCH_S390:AUDIT_ARCH_S390X,
+ audit_syscall_entry(test_thread_flag(TIF_31BIT)?AUDIT_ARCH_S390:AUDIT_ARCH_S390X,
regs->gprs[2], regs->orig_gpr2, regs->gprs[3],
regs->gprs[4], regs->gprs[5]);
}
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 49e6dedd027..d31975e6d6f 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -653,7 +653,7 @@ asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)
if (unlikely(tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
result = AUDITSC_FAILURE;
- audit_syscall_exit(current, result, regs->u_regs[UREG_I0]);
+ audit_syscall_exit(result, regs->u_regs[UREG_I0]);
}
if (!(current->ptrace & PT_PTRACED))
@@ -677,8 +677,7 @@ asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)
out:
if (unlikely(current->audit_context) && !syscall_exit_p)
- audit_syscall_entry(current,
- (test_thread_flag(TIF_32BIT) ?
+ audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
AUDIT_ARCH_SPARC :
AUDIT_ARCH_SPARC64),
regs->u_regs[UREG_G1],
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 60d2eda995c..9a77fb3c269 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -275,15 +275,13 @@ void syscall_trace(union uml_pt_regs *regs, int entryexit)
if (unlikely(current->audit_context)) {
if (!entryexit)
- audit_syscall_entry(current,
- HOST_AUDIT_ARCH,
+ audit_syscall_entry(HOST_AUDIT_ARCH,
UPT_SYSCALL_NR(regs),
UPT_SYSCALL_ARG1(regs),
UPT_SYSCALL_ARG2(regs),
UPT_SYSCALL_ARG3(regs),
UPT_SYSCALL_ARG4(regs));
- else audit_syscall_exit(current,
- AUDITSC_RESULT(UPT_SYSCALL_RET(regs)),
+ else audit_syscall_exit(AUDITSC_RESULT(UPT_SYSCALL_RET(regs)),
UPT_SYSCALL_RET(regs));
}
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index da8e7903d81..2d50024c9f3 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -600,12 +600,12 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs)
if (unlikely(current->audit_context)) {
if (test_thread_flag(TIF_IA32)) {
- audit_syscall_entry(current, AUDIT_ARCH_I386,
+ audit_syscall_entry(AUDIT_ARCH_I386,
regs->orig_rax,
regs->rbx, regs->rcx,
regs->rdx, regs->rsi);
} else {
- audit_syscall_entry(current, AUDIT_ARCH_X86_64,
+ audit_syscall_entry(AUDIT_ARCH_X86_64,
regs->orig_rax,
regs->rdi, regs->rsi,
regs->rdx, regs->r10);
@@ -616,7 +616,7 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs)
asmlinkage void syscall_trace_leave(struct pt_regs *regs)
{
if (unlikely(current->audit_context))
- audit_syscall_exit(current, AUDITSC_RESULT(regs->rax), regs->rax);
+ audit_syscall_exit(AUDITSC_RESULT(regs->rax), regs->rax);
if ((test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SINGLESTEP))
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 1c47c59058c..b74c148f14e 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -83,6 +83,7 @@
#define AUDIT_CONFIG_CHANGE 1305 /* Audit system configuration change */
#define AUDIT_SOCKADDR 1306 /* sockaddr copied as syscall arg */
#define AUDIT_CWD 1307 /* Current working directory */
+#define AUDIT_IPC_SET_PERM 1311 /* IPC new permissions record type */
#define AUDIT_AVC 1400 /* SE Linux avc denial or grant */
#define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */
@@ -145,6 +146,11 @@
#define AUDIT_PERS 10
#define AUDIT_ARCH 11
#define AUDIT_MSGTYPE 12
+#define AUDIT_SE_USER 13 /* security label user */
+#define AUDIT_SE_ROLE 14 /* security label role */
+#define AUDIT_SE_TYPE 15 /* security label type */
+#define AUDIT_SE_SEN 16 /* security label sensitivity label */
+#define AUDIT_SE_CLR 17 /* security label clearance label */
/* These are ONLY useful when checking
* at syscall exit time (AUDIT_AT_EXIT). */
@@ -287,10 +293,10 @@ struct netlink_skb_parms;
/* Public API */
extern int audit_alloc(struct task_struct *task);
extern void audit_free(struct task_struct *task);
-extern void audit_syscall_entry(struct task_struct *task, int arch,
+extern void audit_syscall_entry(int arch,
int major, unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3);
-extern void audit_syscall_exit(struct task_struct *task, int failed, long return_code);
+extern void audit_syscall_exit(int failed, long return_code);
extern void audit_getname(const char *name);
extern void audit_putname(const char *name);
extern void __audit_inode(const char *name, const struct inode *inode, unsigned flags);
@@ -314,7 +320,8 @@ extern void 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);
extern uid_t audit_get_loginuid(struct audit_context *ctx);
-extern int audit_ipc_perms(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode, struct kern_ipc_perm *ipcp);
+extern int audit_ipc_obj(struct kern_ipc_perm *ipcp);
+extern int audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode, struct kern_ipc_perm *ipcp);
extern int audit_socketcall(int nargs, unsigned long *args);
extern int audit_sockaddr(int len, void *addr);
extern int audit_avc_path(struct dentry *dentry, struct vfsmount *mnt);
@@ -323,8 +330,8 @@ extern int audit_set_macxattr(const char *name);
#else
#define audit_alloc(t) ({ 0; })
#define audit_free(t) do { ; } while (0)
-#define audit_syscall_entry(t,ta,a,b,c,d,e) do { ; } while (0)
-#define audit_syscall_exit(t,f,r) do { ; } while (0)
+#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
+#define audit_syscall_exit(f,r) do { ; } while (0)
#define audit_getname(n) do { ; } while (0)
#define audit_putname(n) do { ; } while (0)
#define __audit_inode(n,i,f) do { ; } while (0)
@@ -333,7 +340,8 @@ extern int audit_set_macxattr(const char *name);
#define audit_inode_child(d,i,p) do { ; } while (0)
#define auditsc_get_stamp(c,t,s) do { BUG(); } while (0)
#define audit_get_loginuid(c) ({ -1; })
-#define audit_ipc_perms(q,u,g,m,i) ({ 0; })
+#define audit_ipc_obj(i) ({ 0; })
+#define audit_ipc_set_perm(q,u,g,m,i) ({ 0; })
#define audit_socketcall(n,a) ({ 0; })
#define audit_sockaddr(len, addr) ({ 0; })
#define audit_avc_path(dentry, mnt) ({ 0; })
@@ -366,7 +374,7 @@ extern void audit_log_d_path(struct audit_buffer *ab,
extern int audit_filter_user(struct netlink_skb_parms *cb, int type);
extern int audit_filter_type(int type);
extern int audit_receive_filter(int type, int pid, int uid, int seq,
- void *data, size_t datasz, uid_t loginuid);
+ void *data, size_t datasz, uid_t loginuid, u32 sid);
#else
#define audit_log(c,g,t,f,...) do { ; } while (0)
#define audit_log_start(c,g,t) ({ NULL; })
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index f8f3d1c927f..87b8a5703eb 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -143,6 +143,7 @@ struct netlink_skb_parms
__u32 dst_group;
kernel_cap_t eff_cap;
__u32 loginuid; /* Login (audit) uid */
+ __u32 sid; /* SELinux security id */
};
#define NETLINK_CB(skb) (*(struct netlink_skb_parms*)&((skb)->cb))
diff --git a/include/linux/security.h b/include/linux/security.h
index aaa0a5cdbf7..1bab48f6aea 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -869,11 +869,6 @@ struct swap_info_struct;
* @ipcp contains the kernel IPC permission structure
* @flag contains the desired (requested) permission set
* Return 0 if permission is granted.
- * @ipc_getsecurity:
- * Copy the security label associated with the ipc object into
- * @buffer. @buffer may be NULL to request the size of the buffer
- * required. @size indicates the size of @buffer in bytes. Return
- * number of bytes used/required on success.
*
* Security hooks for individual messages held in System V IPC message queues
* @msg_msg_alloc_security:
@@ -1223,7 +1218,6 @@ struct security_operations {
void (*task_to_inode)(struct task_struct *p, struct inode *inode);
int (*ipc_permission) (struct kern_ipc_perm * ipcp, short flag);
- int (*ipc_getsecurity)(struct kern_ipc_perm *ipcp, void *buffer, size_t size);
int (*msg_msg_alloc_security) (struct msg_msg * msg);
void (*msg_msg_free_security) (struct msg_msg * msg);
@@ -1887,11 +1881,6 @@ static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
return security_ops->ipc_permission (ipcp, flag);
}
-static inline int security_ipc_getsecurity(struct kern_ipc_perm *ipcp, void *buffer, size_t size)
-{
- return security_ops->ipc_getsecurity(ipcp, buffer, size);
-}
-
static inline int security_msg_msg_alloc (struct msg_msg * msg)
{
return security_ops->msg_msg_alloc_security (msg);
@@ -2532,11 +2521,6 @@ static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
return 0;
}
-static inline int security_ipc_getsecurity(struct kern_ipc_perm *ipcp, void *buffer, size_t size)
-{
- return -EOPNOTSUPP;
-}
-
static inline int security_msg_msg_alloc (struct msg_msg * msg)
{
return 0;
diff --git a/include/linux/selinux.h b/include/linux/selinux.h
new file mode 100644
index 00000000000..4047bcde448
--- /dev/null
+++ b/include/linux/selinux.h
@@ -0,0 +1,177 @@
+/*
+ * SELinux services exported to the rest of the kernel.
+ *
+ * Author: James Morris <jmorris@redhat.com>
+ *
+ * Copyright (C) 2005 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ * Copyright (C) 2006 Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
+ * Copyright (C) 2006 IBM Corporation, Timothy R. Chavez <tinytim@us.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ */
+#ifndef _LINUX_SELINUX_H
+#define _LINUX_SELINUX_H
+
+struct selinux_audit_rule;
+struct audit_context;
+struct inode;
+struct kern_ipc_perm;
+
+#ifdef CONFIG_SECURITY_SELINUX
+
+/**
+ * selinux_audit_rule_init - alloc/init an selinux audit rule structure.
+ * @field: the field this rule refers to
+ * @op: the operater the rule uses
+ * @rulestr: the text "target" of the rule
+ * @rule: pointer to the new rule structure returned via this
+ *
+ * Returns 0 if successful, -errno if not. On success, the rule structure
+ * will be allocated internally. The caller must free this structure with
+ * selinux_audit_rule_free() after use.
+ */
+int selinux_audit_rule_init(u32 field, u32 op, char *rulestr,
+ struct selinux_audit_rule **rule);
+
+/**
+ * selinux_audit_rule_free - free an selinux audit rule structure.
+ * @rule: pointer to the audit rule to be freed
+ *
+ * This will free all memory associated with the given rule.
+ * If @rule is NULL, no operation is performed.
+ */
+void selinux_audit_rule_free(struct selinux_audit_rule *rule);
+
+/**
+ * selinux_audit_rule_match - determine if a context ID matches a rule.
+ * @ctxid: the context ID to check
+ * @field: the field this rule refers to
+ * @op: the operater the rule uses
+ * @rule: pointer to the audit rule to check against
+ * @actx: the audit context (can be NULL) associated with the check
+ *
+ * Returns 1 if the context id matches the rule, 0 if it does not, and
+ * -errno on failure.
+ */
+int selinux_audit_rule_match(u32 ctxid, u32 field, u32 op,
+ struct selinux_audit_rule *rule,
+ struct audit_context *actx);
+
+/**
+ * selinux_audit_set_callback - set the callback for policy reloads.
+ * @callback: the function to call when the policy is reloaded
+ *
+ * This sets the function callback function that will update the rules
+ * upon policy reloads. This callback should rebuild all existing rules
+ * using selinux_audit_rule_init().
+ */
+void selinux_audit_set_callback(int (*callback)(void));
+
+/**
+ * selinux_task_ctxid - determine a context ID for a process.
+ * @tsk: the task object
+ * @ctxid: ID value returned via this
+ *
+ * On return, ctxid will contain an ID for the context. This value
+ * should only be used opaquely.
+ */
+void selinux_task_ctxid(struct task_struct *tsk, u32 *ctxid);
+
+/**
+ * selinux_ctxid_to_string - map a security context ID to a string
+ * @ctxid: security context ID to be converted.
+ * @ctx: address of context string to be returned
+ * @ctxlen: length of returned context string.
+ *
+ * Returns 0 if successful, -errno if not. On success, the context
+ * string will be allocated internally, and the caller must call
+ * kfree() on it after use.
+ */
+int selinux_ctxid_to_string(u32 ctxid, char **ctx, u32 *ctxlen);
+
+/**
+ * selinux_get_inode_sid - get the inode's security context ID
+ * @inode: inode structure to get the sid from.
+ * @sid: pointer to security context ID to be filled in.
+ *
+ * Returns nothing
+ */
+void selinux_get_inode_sid(const struct inode *inode, u32 *sid);
+
+/**
+ * selinux_get_ipc_sid - get the ipc security context ID
+ * @ipcp: ipc structure to get the sid from.
+ * @sid: pointer to security context ID to be filled in.
+ *
+ * Returns nothing
+ */
+void selinux_get_ipc_sid(const struct kern_ipc_perm *ipcp, u32 *sid);
+
+/**
+ * selinux_get_task_sid - return the SID of task
+ * @tsk: the task whose SID will be returned
+ * @sid: pointer to security context ID to be filled in.
+ *
+ * Returns nothing
+ */
+void selinux_get_task_sid(struct task_struct *tsk, u32 *sid);
+
+
+#else
+
+static inline int selinux_audit_rule_init(u32 field, u32 op,
+ char *rulestr,
+ struct selinux_audit_rule **rule)
+{
+ return -ENOTSUPP;
+}
+
+static inline void selinux_audit_rule_free(struct selinux_audit_rule *rule)
+{
+ return;
+}
+
+static inline int selinux_audit_rule_match(u32 ctxid, u32 field, u32 op,
+ struct selinux_audit_rule *rule,
+ struct audit_context *actx)
+{
+ return 0;
+}
+
+static inline void selinux_audit_set_callback(int (*callback)(void))
+{
+ return;
+}
+
+static inline void selinux_task_ctxid(struct task_struct *tsk, u32 *ctxid)
+{
+ *ctxid = 0;
+}
+
+static inline int selinux_ctxid_to_string(u32 ctxid, char **ctx, u32 *ctxlen)
+{
+ *ctx = NULL;
+ *ctxlen = 0;
+ return 0;
+}
+
+static inline void selinux_get_inode_sid(const struct inode *inode, u32 *sid)
+{
+ *sid = 0;
+}
+
+static inline void selinux_get_ipc_sid(const struct kern_ipc_perm *ipcp, u32 *sid)
+{
+ *sid = 0;
+}
+
+static inline void selinux_get_task_sid(struct task_struct *tsk, u32 *sid)
+{
+ *sid = 0;
+}
+
+#endif /* CONFIG_SECURITY_SELINUX */
+
+#endif /* _LINUX_SELINUX_H */
diff --git a/ipc/msg.c b/ipc/msg.c
index 48a7f17a723..7d1340ccb16 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -13,6 +13,9 @@
* mostly rewritten, threaded and wake-one semantics added
* MSGMAX limit removed, sysctl's added
* (c) 1999 Manfred Spraul <manfred@colorfullife.com>
+ *
+ * support for audit of ipc object properties and permission changes
+ * Dustin Kirkland <dustin.kirkland@us.ibm.com>
*/
#include <linux/capability.h>
@@ -447,6 +450,11 @@ asmlinkage long sys_msgctl (int msqid, int cmd, struct msqid_ds __user *buf)
if (msg_checkid(msq,msqid))
goto out_unlock_up;
ipcp = &msq->q_perm;
+
+ err = audit_ipc_obj(ipcp);
+ if (err)
+ goto out_unlock_up;
+
err = -EPERM;
if (current->euid != ipcp->cuid &&
current->euid != ipcp->uid && !capable(CAP_SYS_ADMIN))
@@ -460,7 +468,8 @@ asmlinkage long sys_msgctl (int msqid, int cmd, struct msqid_ds __user *buf)
switch (cmd) {
case IPC_SET:
{
- if ((err = audit_ipc_perms(setbuf.qbytes, setbuf.uid, setbuf.gid, setbuf.mode, ipcp)))
+ err = audit_ipc_set_perm(setbuf.qbytes, setbuf.uid, setbuf.gid, setbuf.mode, ipcp);
+ if (err)
goto out_unlock_up;
err = -EPERM;
diff --git a/ipc/sem.c b/ipc/sem.c
index 642659cd596..7919f8ece6b 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -61,6 +61,9 @@
* (c) 2001 Red Hat Inc <alan@redhat.com>
* Lockless wakeup
* (c) 2003 Manfred Spraul <manfred@colorfullife.com>
+ *
+ * support for audit of ipc object properties and permission changes
+ * Dustin Kirkland <dustin.kirkland@us.ibm.com>
*/
#include <linux/config.h>
@@ -820,6 +823,11 @@ static int semctl_down(int semid, int semnum, int cmd, int version, union semun
goto out_unlock;
}
ipcp = &sma->sem_perm;
+
+ err = audit_ipc_obj(ipcp);
+ if (err)
+ goto out_unlock;
+
if (current->euid != ipcp->cuid &&
current->euid != ipcp->uid && !capable(CAP_SYS_ADMIN)) {
err=-EPERM;
@@ -836,7 +844,8 @@ static int semctl_down(int semid, int semnum, int cmd, int version, union semun
err = 0;
break;
case IPC_SET:
- if ((err = audit_ipc_perms(0, setbuf.uid, setbuf.gid, setbuf.mode, ipcp)))
+ err = audit_ipc_set_perm(0, setbuf.uid, setbuf.gid, setbuf.mode, ipcp);
+ if (err)
goto out_unlock;
ipcp->uid = setbuf.uid;
ipcp->gid = setbuf.gid;
diff --git a/ipc/shm.c b/ipc/shm.c
index 1c2faf62bc7..80989685190 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -13,6 +13,8 @@
* Shared /dev/zero support, Kanoj Sarcar <kanoj@sgi.com>
* Move the mm functionality over to mm/shmem.c, Christoph Rohland <cr@sap.com>
*
+ * support for audit of ipc object properties and permission changes
+ * Dustin Kirkland <dustin.kirkland@us.ibm.com>
*/
#include <linux/config.h>
@@ -542,6 +544,10 @@ asmlinkage long sys_shmctl (int shmid, int cmd, struct shmid_ds __user *buf)
if(err)
goto out_unlock;
+ err = audit_ipc_obj(&(shp->shm_perm));
+ if (err)
+ goto out_unlock;
+
if (!capable(CAP_IPC_LOCK)) {
err = -EPERM;
if (current->euid != shp->shm_perm.uid &&
@@ -594,6 +600,10 @@ asmlinkage long sys_shmctl (int shmid, int cmd, struct shmid_ds __user *buf)
if(err)
goto out_unlock_up;
+ err = audit_ipc_obj(&(shp->shm_perm));
+ if (err)
+ goto out_unlock_up;
+
if (current->euid != shp->shm_perm.uid &&
current->euid != shp->shm_perm.cuid &&
!capable(CAP_SYS_ADMIN)) {
@@ -627,12 +637,15 @@ asmlinkage long sys_shmctl (int shmid, int cmd, struct shmid_ds __user *buf)
err=-EINVAL;
if(shp==NULL)
goto out_up;
- if ((err = audit_ipc_perms(0, setbuf.uid, setbuf.gid,
- setbuf.mode, &(shp->shm_perm))))
- goto out_unlock_up;
err = shm_checkid(shp,shmid);
if(err)
goto out_unlock_up;
+ err = audit_ipc_obj(&(shp->shm_perm));
+ if (err)
+ goto out_unlock_up;
+ err = audit_ipc_set_perm(0, setbuf.uid, setbuf.gid, setbuf.mode, &(shp->shm_perm));
+ if (err)
+ goto out_unlock_up;
err=-EPERM;
if (current->euid != shp->shm_perm.uid &&
current->euid != shp->shm_perm.cuid &&
diff --git a/ipc/util.c b/ipc/util.c
index b3dcfad3b4f..8193299f45f 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -10,6 +10,8 @@
* Manfred Spraul <manfred@colorfullife.com>
* Oct 2002 - One lock per IPC id. RCU ipc_free for lock-free grow_ary().
* Mingming Cao <cmm@us.ibm.com>
+ * Mar 2006 - support for audit of ipc object properties
+ * Dustin Kirkland <dustin.kirkland@us.ibm.com>
*/
#include <linux/config.h>
@@ -27,6 +29,7 @@
#include <linux/workqueue.h>
#include <linux/seq_file.h>
#include <linux/proc_fs.h>
+#include <linux/audit.h>
#include <asm/unistd.h>
@@ -464,8 +467,10 @@ void ipc_rcu_putref(void *ptr)
int ipcperms (struct kern_ipc_perm *ipcp, short flag)
{ /* flag will most probably be 0 or S_...UGO from <linux/stat.h> */
- int requested_mode, granted_mode;
+ int requested_mode, granted_mode, err;
+ if (unlikely((err = audit_ipc_obj(ipcp))))
+ return err;
requested_mode = (flag >> 6) | (flag >> 3) | flag;
granted_mode = ipcp->mode;
if (current->euid == ipcp->cuid || current->euid == ipcp->uid)
diff --git a/kernel/audit.c b/kernel/audit.c
index c8ccbd09048..df57b493e1c 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -55,6 +55,9 @@
#include <net/netlink.h>
#include <linux/skbuff.h>
#include <linux/netlink.h>
+#include <linux/selinux.h>
+
+#include "audit.h"
/* No auditing will take place until audit_initialized != 0.
* (Initialization happens after skb_init is called.) */
@@ -227,49 +230,103 @@ void audit_log_lost(const char *message)
}
}
-static int audit_set_rate_limit(int limit, uid_t loginuid)
+static int audit_set_rate_limit(int limit, uid_t loginuid, u32 sid)
{
- int old = audit_rate_limit;
- audit_rate_limit = limit;
- audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
+ int old = audit_rate_limit;
+
+ if (sid) {
+ char *ctx = NULL;
+ u32 len;
+ int rc;
+ if ((rc = selinux_ctxid_to_string(sid, &ctx, &len)))
+ return rc;
+ else
+ audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
+ "audit_rate_limit=%d old=%d by auid=%u subj=%s",
+ limit, old, loginuid, ctx);
+ kfree(ctx);
+ } else
+ audit_log(NULL, GFP_KERNEL, AUDIT_CON