From: Alan Cox <alan@linux.intel.com>
Date: Fri, 30 Jan 2015 00:26:24 +0000 (+0000)
Subject: link/mkdir: error link counter overrun
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=5fd774821e1f34df01be7a72eb6482bba5bb0331;p=FUZIX.git

link/mkdir: error link counter overrun
---

diff --git a/Kernel/syscall_fs2.c b/Kernel/syscall_fs2.c
index aacfde33..5357fa68 100644
--- a/Kernel/syscall_fs2.c
+++ b/Kernel/syscall_fs2.c
@@ -551,6 +551,11 @@ arg_t _link(void)
 	if (getmode(ino) == F_DIR && esuper())
 		goto nogood;
 
+	if (ino->c_node.i_nlink == 0xFFFF) {
+		udata.u_error = EMLINK;
+		goto nogood;
+	}
+
 	/* Make sure file2 doesn't exist, and get its parent */
 	if ((ino2 = n_open(name2, &parent2)) != NULL) {
 		i_deref(ino2);
diff --git a/Kernel/syscall_other.c b/Kernel/syscall_other.c
index f41475d0..be2e54c6 100644
--- a/Kernel/syscall_other.c
+++ b/Kernel/syscall_other.c
@@ -125,6 +125,11 @@ arg_t _mkdir(void)
 		return (-1);
 	}
 
+	if (parent->c_node.i_nlink == 0xFFFF) {
+		udata.u_error = EMLINK;
+		goto nogood2;
+	}
+
 	filename(name, fname);
 
 	i_ref(parent);		/* We need it again in a minute */