Regenerate sysent with new abort2 system call.

Implement abort2(const char *reason, int narg, void **args);

Submitted by:	"Wojciech A. Koszek" <dunstan@freebsd.czest.pl>

sys/compat/freebsd32/freebsd32_proto.h

@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.57 2005/10/26 22:19:51 peter Exp 
+ * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.60 2005/12/23 11:56:39 phk Exp 
  */
 
 #ifndef _FREEBSD32_SYSPROTO_H_
@@ -272,6 +272,11 @@ struct freebsd32_swapcontext_args {
 	char oucp_l_[PADL_(struct freebsd32_ucontext *)]; struct freebsd32_ucontext * oucp; char oucp_r_[PADR_(struct freebsd32_ucontext *)];
 	char ucp_l_[PADL_(const struct freebsd32_ucontext *)]; const struct freebsd32_ucontext * ucp; char ucp_r_[PADR_(const struct freebsd32_ucontext *)];
 };
+struct abort2_args {
+	char why_l_[PADL_(const char *)]; const char * why; char why_r_[PADR_(const char *)];
+	char nargs_l_[PADL_(int)]; int nargs; char nargs_r_[PADR_(int)];
+	char args_l_[PADL_(void **)]; void ** args; char args_r_[PADR_(void **)];
+};
 int	freebsd32_wait4(struct thread *, struct freebsd32_wait4_args *);
 int	freebsd32_recvmsg(struct thread *, struct freebsd32_recvmsg_args *);
 int	freebsd32_sendmsg(struct thread *, struct freebsd32_sendmsg_args *);
@@ -316,6 +321,7 @@ int	freebsd32_sigreturn(struct thread *, struct freebsd32_sigreturn_args *);
 int	freebsd32_getcontext(struct thread *, struct freebsd32_getcontext_args *);
 int	freebsd32_setcontext(struct thread *, struct freebsd32_setcontext_args *);
 int	freebsd32_swapcontext(struct thread *, struct freebsd32_swapcontext_args *);
+int	abort2(struct thread *, struct abort2_args *);
 
 #ifdef COMPAT_43
 

sys/compat/freebsd32/freebsd32_syscall.h

@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.57 2005/10/26 22:19:51 peter Exp 
+ * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.60 2005/12/23 11:56:39 phk Exp 
  */
 
 #define	FREEBSD32_SYS_syscall	0
@@ -310,4 +310,5 @@
 #define	FREEBSD32_SYS_thr_suspend	442
 #define	FREEBSD32_SYS_thr_wake	443
 #define	FREEBSD32_SYS_kldunloadf	444
-#define	FREEBSD32_SYS_MAXSYSCALL	455
+#define	FREEBSD32_SYS_abort2	463
+#define	FREEBSD32_SYS_MAXSYSCALL	464

sys/compat/freebsd32/freebsd32_syscalls.c

@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.57 2005/10/26 22:19:51 peter Exp 
+ * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.60 2005/12/23 11:56:39 phk Exp 
  */
 
 const char *freebsd32_syscallnames[] = {
@@ -462,4 +462,13 @@ const char *freebsd32_syscallnames[] = {
 	"#452",			/* 452 = setaudit_addr */
 	"#453",			/* 453 = auditctl */
 	"#454",			/* 454 = _umtx_op */
+	"#455",			/* 455 = thr_new */
+	"#456",			/* 456 = sigqueue */
+	"#457",			/* 457 = mq_open */
+	"#458",			/* 458 = mq_setattr */
+	"#459",			/* 459 = mq_timedreceive */
+	"#460",			/* 460 = mq_timedsend */
+	"#461",			/* 461 = mq_notify */
+	"#462",			/* 462 = mq_unlink */
+	"abort2",			/* 463 = abort2 */
 };

sys/compat/freebsd32/freebsd32_sysent.c

@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.57 2005/10/26 22:19:51 peter Exp 
+ * created from FreeBSD: src/sys/compat/freebsd32/syscalls.master,v 1.60 2005/12/23 11:56:39 phk Exp 
  */
 
 #include "opt_compat.h"
@@ -487,4 +487,13 @@ struct sysent freebsd32_sysent[] = {
 	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 452 = setaudit_addr */
 	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 453 = auditctl */
 	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 454 = _umtx_op */
+	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 455 = thr_new */
+	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 456 = sigqueue */
+	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 457 = mq_open */
+	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 458 = mq_setattr */
+	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 459 = mq_timedreceive */
+	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 460 = mq_timedsend */
+	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 461 = mq_notify */
+	{ 0, (sy_call_t *)nosys, AUE_NULL },			/* 462 = mq_unlink */
+	{ SYF_MPSAFE | AS(abort2_args), (sy_call_t *)abort2, AUE_NULL },	/* 463 = abort2 */
 };

sys/kern/init_sysent.c

@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/kern/syscalls.master,v 1.205 2005/11/27 01:13:00 davidxu Exp 
+ * created from FreeBSD: src/sys/kern/syscalls.master,v 1.206 2005/12/23 11:54:11 phk Exp 
  */
 
 #include "opt_compat.h"
@@ -492,4 +492,5 @@ struct sysent sysent[] = {
 	{ SYF_MPSAFE | AS(mq_timedsend_args), (sy_call_t *)lkmressys, AUE_NULL },	/* 460 = mq_timedsend */
 	{ SYF_MPSAFE | AS(mq_notify_args), (sy_call_t *)lkmressys, AUE_NULL },	/* 461 = mq_notify */
 	{ SYF_MPSAFE | AS(mq_unlink_args), (sy_call_t *)lkmressys, AUE_NULL },	/* 462 = mq_unlink */
+	{ SYF_MPSAFE | AS(abort2_args), (sy_call_t *)abort2, AUE_NULL },	/* 463 = abort2 */
 };

sys/kern/kern_exit.c

@@ -56,10 +56,12 @@ __FBSDID("$FreeBSD$");
 #include <sys/vmmeter.h>
 #include <sys/vnode.h>
 #include <sys/resourcevar.h>
+#include <sys/sbuf.h>
 #include <sys/signalvar.h>
 #include <sys/sched.h>
 #include <sys/sx.h>
 #include <sys/syscallsubr.h>
+#include <sys/syslog.h>
 #include <sys/ptrace.h>
 #include <sys/acct.h>		/* for acct_process() function prototype */
 #include <sys/filedesc.h>
@@ -553,6 +555,87 @@ retry:
 	thread_exit();
 }
 
+
+#ifndef _SYS_SYSPROTO_H_
+struct abort2_args {
+	char *why;
+	int nargs;
+	void **args;
+};
+#endif
+
+/*
+ * MPSAFE.
+ */
+int
+abort2(struct thread *td, struct abort2_args *uap)
+{
+	struct proc *p = td->td_proc;
+	struct sbuf *sb;
+	void *uargs[16];
+	int error, i, sig;
+
+	error = 0;	/* satisfy compiler */
+
+	/*
+	 * Do it right now so we can log either proper call of abort2(), or
+	 * note, that invalid argument was passed. 512 is big enough to
+	 * handle 16 arguments' descriptions with additional comments.
+	 */
+	sb = sbuf_new(NULL, NULL, 512, SBUF_FIXEDLEN);
+	sbuf_clear(sb);
+	sbuf_printf(sb, "%s(pid %d uid %d) aborted: ",
+	    p->p_comm, p->p_pid, td->td_ucred->cr_uid);
+	/* 
+	 * Since we can't return from abort2(), send SIGKILL in cases, where
+	 * abort2() was called improperly
+	 */
+	sig = SIGKILL;
+	/* Prevent from DoSes from user-space. */
+	if (uap->nargs < 0 || uap->nargs > 16)
+		goto out;
+	if (uap->args == NULL)
+		goto out;
+	error = copyin(uap->args, uargs, uap->nargs * sizeof(void *));
+	if (error != 0)
+		goto out;
+	/*
+	 * Limit size of 'reason' string to 128. Will fit even when
+	 * maximal number of arguments was chosen to be logged.
+	 */
+	if (uap->why != NULL) {
+		error = sbuf_copyin(sb, uap->why, 128);
+		if (error < 0)
+			goto out;
+	} else {
+		sbuf_printf(sb, "(null)");
+	}
+	if (uap->nargs) {
+		sbuf_printf(sb, "(");
+		for (i = 0;i < uap->nargs; i++)
+			sbuf_printf(sb, "%s%p", i == 0 ? "" : ", ", uargs[i]);
+		sbuf_printf(sb, ")");
+	}
+	/*
+	 * Final stage: arguments were proper, string has been
+	 * successfully copied from userspace, and copying pointers
+	 * from user-space succeed.
+	 */
+	sig = SIGABRT;
+out:
+	if (sig == SIGKILL) {
+		sbuf_trim(sb);
+		sbuf_printf(sb, " (Reason text inaccessible)");
+	}
+	sbuf_cat(sb, "\n");
+	sbuf_finish(sb);
+	log(LOG_INFO, "%s", sbuf_data(sb));
+	sbuf_delete(sb);
+	exit1(td, W_EXITCODE(0, sig));
+	return (0);
+}
+
+
 #ifdef COMPAT_43
 /*
  * The dirty work is handled by kern_wait().

sys/kern/syscalls.c

@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/kern/syscalls.master,v 1.205 2005/11/27 01:13:00 davidxu Exp 
+ * created from FreeBSD: src/sys/kern/syscalls.master,v 1.206 2005/12/23 11:54:11 phk Exp 
  */
 
 const char *syscallnames[] = {
@@ -470,4 +470,5 @@ const char *syscallnames[] = {
 	"mq_timedsend",			/* 460 = mq_timedsend */
 	"mq_notify",			/* 461 = mq_notify */
 	"mq_unlink",			/* 462 = mq_unlink */
+	"abort2",			/* 463 = abort2 */
 };

sys/sys/syscall.h

@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/kern/syscalls.master,v 1.205 2005/11/27 01:13:00 davidxu Exp 
+ * created from FreeBSD: src/sys/kern/syscalls.master,v 1.206 2005/12/23 11:54:11 phk Exp 
  */
 
 #define	SYS_syscall	0
@@ -386,4 +386,5 @@
 #define	SYS_mq_timedsend	460
 #define	SYS_mq_notify	461
 #define	SYS_mq_unlink	462
-#define	SYS_MAXSYSCALL	463
+#define	SYS_abort2	463
+#define	SYS_MAXSYSCALL	464

sys/sys/syscall.mk

@@ -1,7 +1,7 @@
 # FreeBSD system call names.
 # DO NOT EDIT-- this file is automatically generated.
 # $FreeBSD$
-# created from FreeBSD: src/sys/kern/syscalls.master,v 1.205 2005/11/27 01:13:00 davidxu Exp 
+# created from FreeBSD: src/sys/kern/syscalls.master,v 1.206 2005/12/23 11:54:11 phk Exp 
 MIASM =  \
 	syscall.o \
 	exit.o \
@@ -327,4 +327,5 @@ MIASM =  \
 	mq_timedreceive.o \
 	mq_timedsend.o \
 	mq_notify.o \
-	mq_unlink.o
+	mq_unlink.o \
+	abort2.o

sys/sys/sysproto.h

@@ -3,7 +3,7 @@
  *
  * DO NOT EDIT-- this file is automatically generated.
  * $FreeBSD$
- * created from FreeBSD: src/sys/kern/syscalls.master,v 1.205 2005/11/27 01:13:00 davidxu Exp 
+ * created from FreeBSD: src/sys/kern/syscalls.master,v 1.206 2005/12/23 11:54:11 phk Exp 
  */
 
 #ifndef _SYS_SYSPROTO_H_
@@ -1435,6 +1435,11 @@ struct mq_notify_args {
 struct mq_unlink_args {
 	char path_l_[PADL_(const char *)]; const char * path; char path_r_[PADR_(const char *)];
 };
+struct abort2_args {
+	char why_l_[PADL_(const char *)]; const char * why; char why_r_[PADR_(const char *)];
+	char nargs_l_[PADL_(int)]; int nargs; char nargs_r_[PADR_(int)];
+	char args_l_[PADL_(void **)]; void ** args; char args_r_[PADR_(void **)];
+};
 int	nosys(struct thread *, struct nosys_args *);
 void	sys_exit(struct thread *, struct sys_exit_args *);
 int	fork(struct thread *, struct fork_args *);
@@ -1759,6 +1764,7 @@ int	mq_timedreceive(struct thread *, struct mq_timedreceive_args *);
 int	mq_timedsend(struct thread *, struct mq_timedsend_args *);
 int	mq_notify(struct thread *, struct mq_notify_args *);
 int	mq_unlink(struct thread *, struct mq_unlink_args *);
+int	abort2(struct thread *, struct abort2_args *);
 
 #ifdef COMPAT_43