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sys/OpenBSD/stack_protector.c.patch Libc-763.11 Libc-391.5.22
--- Libc/Libc-763.11/sys/OpenBSD/stack_protector.c.patch
+++ Libc/Libc-391.5.22/sys/OpenBSD/stack_protector.c.patch
@@ -1,157 +1,15 @@
---- stack_protector.c.orig	2010-10-07 09:55:01.000000000 -0700
-+++ stack_protector.c	2010-10-07 09:55:30.000000000 -0700
-@@ -28,65 +28,112 @@
-  */
+--- stack_protector.c.orig	2006-10-05 00:09:07.000000000 -0700
++++ stack_protector.c	2006-10-05 00:18:28.000000000 -0700
+@@ -34,10 +34,10 @@
+ #include <syslog.h>
  
- #include <sys/param.h>
--#include <sys/sysctl.h>
- #include <signal.h>
- #include <string.h>
--#include <syslog.h>
-+#include <stdlib.h>
-+#include <asl.h>
- #include <unistd.h>
-+#include <sys/types.h>
-+#include <fcntl.h>
-+#include "CrashReporterClient.h"
-+#include "libproc.h"
-+#include "_simple.h"
-+
-+#define	GUARD_MAX 8
-+long __stack_chk_guard[GUARD_MAX] = {0, 0, 0, 0, 0, 0, 0, 0};
-+void __abort(void) __dead2;
-+void __guard_setup(const char *apple[]) __attribute__ ((visibility ("hidden")));
-+void __stack_chk_fail(void);
- 
--extern int __sysctl(int *, u_int, void *, size_t *, void *, size_t);
-+static void
-+__guard_from_kernel(const char *str)
-+{
-+	unsigned long long val;
-+	char tmp[20], *p;
-+	int idx = 0;
-+
-+	/* Skip over the 'stack_guard=' key to the list of values */
-+	str = strchr(str, '=');
-+	if (str == NULL)
-+		return;
-+	str++;
- 
--long __guard[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+ long __guard[8] = {0, 0, 0, 0, 0, 0, 0, 0};
 -static void __guard_setup(void) __attribute__ ((constructor));
--void __stack_smash_handler(char func[], int damaged __attribute__((unused)));
-+	while (str && idx < GUARD_MAX) {
-+		/*
-+		 * Pull the next numeric string out of the list and convert it to
-+		 * a real number.
-+		 */
-+		strlcpy(tmp, str, 20);
-+		p = strchr(tmp, ',');
-+		if (p)
-+			*p = '\0';
-+		val = strtoull(tmp, NULL, 0);
-+		__stack_chk_guard[idx] = (long)(val & ((unsigned long) -1));
-+		idx++;
-+		if ((str = strchr(str, ',')) != NULL)
-+			str++;
-+	}
-+}
++__private_extern__ void __guard_setup(void);
+ void __stack_smash_handler(char func[], int damaged __attribute__((unused)));
  
 -static void
--__guard_setup(void)
-+void
-+__guard_setup(const char *apple[])
++__private_extern__ void
+ __guard_setup(void)
  {
--	int mib[2];
-+	int fd;
- 	size_t len;
-+	const char **p;
- 
--	if (__guard[0] != 0)
-+	if (__stack_chk_guard[0] != 0)
- 		return;
- 
--	mib[0] = CTL_KERN;
--	mib[1] = KERN_ARND;
-+	for (p = apple; p && *p; p++) {
-+		if (strstr(*p, "stack_guard") == *p) {
-+			__guard_from_kernel(*p);
-+			if (__stack_chk_guard[0] != 0)
-+				return;
-+		}
-+	}
- 
--	len = sizeof(__guard);
--	if (__sysctl(mib, 2, __guard, &len, NULL, 0) == -1 ||
--	    len != sizeof(__guard)) {
--		/* If sysctl was unsuccessful, use the "terminator canary". */
--		((unsigned char *)__guard)[0] = 0;
--		((unsigned char *)__guard)[1] = 0;
--		((unsigned char *)__guard)[2] = '\n';
--		((unsigned char *)__guard)[3] = 255;
-+	fd = open ("/dev/urandom", 0);
-+	if (fd != -1) {
-+		len = read (fd, (char*)&__stack_chk_guard, sizeof(__stack_chk_guard));
-+		close(fd);
-+		if (len == sizeof(__stack_chk_guard) && 
-+                    *__stack_chk_guard != 0)
-+			return;
- 	}
-+
-+	/* If If a random generator can't be used, the protector switches the guard
-+           to the "terminator canary" */
-+	((unsigned char *)__stack_chk_guard)[0] = 0;
-+	((unsigned char *)__stack_chk_guard)[1] = 0;
-+	((unsigned char *)__stack_chk_guard)[2] = '\n';
-+	((unsigned char *)__stack_chk_guard)[3] = 255;
- }
- 
--/*ARGSUSED*/
-+#define STACKOVERFLOW	"] stack overflow"
-+
- void
--__stack_smash_handler(char func[], int damaged)
-+__stack_chk_fail()
- {
--	struct syslog_data sdata = SYSLOG_DATA_INIT;
--	const char message[] = "stack overflow in function %s";
--	struct sigaction sa;
--	sigset_t mask;
--
--	/* Immediately block all signal handlers from running code */
--	sigfillset(&mask);
--	sigdelset(&mask, SIGABRT);
--	sigprocmask(SIG_BLOCK, &mask, NULL);
--
-+	char n[16]; // bigger than will hold the digits in a pid_t
-+	char *np;
-+	int pid = getpid();
-+	char message[sizeof(n) + sizeof(STACKOVERFLOW)] = "[";
-+	char prog[2*MAXCOMLEN+1] = {0};
-+
-+	proc_name(pid, prog, 2*MAXCOMLEN);
-+	prog[2*MAXCOMLEN] = 0;
-+	np = n + sizeof(n);
-+	*--np = 0;
-+	while(pid > 0) {
-+	    *--np = (pid % 10) + '0';
-+	    pid /= 10;
-+	}
-+	strlcat(message, np, sizeof(message));
-+	strlcat(message, STACKOVERFLOW, sizeof(message));
- 	/* This may fail on a chroot jail... */
--	syslog_r(LOG_CRIT, &sdata, message, func);
--
--	bzero(&sa, sizeof(struct sigaction));
--	sigemptyset(&sa.sa_mask);
--	sa.sa_flags = 0;
--	sa.sa_handler = SIG_DFL;
--	sigaction(SIGABRT, &sa, NULL);
--
--	kill(getpid(), SIGABRT);
-+	_simple_asl_log_prog(ASL_LEVEL_CRIT, "user", message, prog);
- 
--	_exit(127);
-+	CRSetCrashLogMessage(message);
-+	__abort();
- }
+   int fd;