X-Git-Url: https://git.saurik.com/apple/libc.git/blobdiff_plain/1f2f436a38f7ae2d39a943ad2898d8fed4ed2e58..aa54d2fad3d9038b43475aa93c76795c5141a993:/gen/FreeBSD/sysctl.c?ds=sidebyside

diff --git a/gen/FreeBSD/sysctl.c b/gen/FreeBSD/sysctl.c
index 66d82d0..3cbe748 100644
--- a/gen/FreeBSD/sysctl.c
+++ b/gen/FreeBSD/sysctl.c
@@ -43,18 +43,49 @@ __FBSDID("$FreeBSD: src/lib/libc/gen/sysctl.c,v 1.6 2007/01/09 00:27:55 imp Exp
 #include <unistd.h>
 #include <string.h>
 
-extern int __sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
-    void *newp, size_t newlen);
+#include "sysctl_internal.h"
+
 
 int
-sysctl(name, namelen, oldp, oldlenp, newp, newlen)
-	int *name;
-	u_int namelen;
-	void *oldp, *newp;
-	size_t *oldlenp, newlen;
+sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, size_t newlen)
+__attribute__((disable_tail_calls))
 {
-	if (name[0] != CTL_USER)
-		return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));
+	if (name[0] != CTL_USER) {
+		if (namelen == 2 && name[0] == CTL_KERN && name[1] == KERN_EXEC) {
+			/*
+			 * 7723306: intercept kern.exec and fake a return of
+			 * a dummy string ("/" in this case)
+			 */
+			if (newp != NULL) {
+				errno = EPERM;
+				return -1;
+			}
+			if (oldp == NULL) {
+				if (oldlenp != NULL) *oldlenp = 2;
+				return 0;
+			}
+			if (oldlenp == NULL) {
+				errno = EFAULT;
+				return -1;
+			}
+			if (*oldlenp < 2) {
+				errno = ENOMEM;
+				return -1;
+			}
+			memmove(oldp, "/", 2);
+			*oldlenp = 2;
+			return 0;
+		}
+
+
+		int error = __sysctl(name, namelen, oldp, oldlenp, newp, newlen);
+		if (error < 0) {
+			return error;
+		}
+
+
+		return error;
+	}
 
 	if (newp != NULL) {
 		errno = EPERM;