Libc-1353.11.2.tar.gz

[apple/libc.git] / sys / OpenBSD / stack_protector.c

diff --git a/sys/OpenBSD/stack_protector.c b/sys/OpenBSD/stack_protector.c
index 988d8edc1f8090f7737a642fcfac99ae327f6d12..7ac7c7b434c1455d485263e4cbf2236b6ea91da6 100644 (file)
--- a/sys/OpenBSD/stack_protector.c
+++ b/sys/OpenBSD/stack_protector.c
@@ -31,17 +31,20 @@
 #include <signal.h>
 #include <string.h>
 #include <stdlib.h>
-#include <asl.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <fcntl.h>
+#if __has_include(<CrashReporterClient.h>)
 #include <CrashReporterClient.h>
+#else
+#define CRSetCrashLogMessage(...)
+#endif
 #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 __abort(void) __cold __dead2;
 void __guard_setup(const char *apple[]) __attribute__ ((visibility ("hidden")));
 void __stack_chk_fail(void);
 
@@ -112,30 +115,18 @@ __guard_setup(const char *apple[])
        ((unsigned char *)__stack_chk_guard)[3] = 255;
 }
 
-#define STACKOVERFLOW  "] stack overflow"
+static const char *stackoverflow_msg = "stack buffer overflow";
 
 void
 __stack_chk_fail()
 {
-       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};
+       CRSetCrashLogMessage(stackoverflow_msg);
 
-       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... */
-       _simple_asl_log_prog(ASL_LEVEL_CRIT, "user", message, prog);
+       char prog[2*MAXCOMLEN+1] = {0};
+       proc_name(getpid(), prog, 2*MAXCOMLEN);
+       prog[2*MAXCOMLEN] = 0;
+       _simple_asl_log_prog(ASL_LEVEL_CRIT, "user", stackoverflow_msg, prog);
 
-       CRSetCrashLogMessage(message);
        __abort();
 }