X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fpipe.c;h=ec228bc9f8824128ea99c5cb24abc743063e00bb;hb=49307fd6f72bdd68cc2bd23e7da0bcfecf8087c9;hp=f73492b6817ea37d356b63f8bdfd81a960156ca7;hpb=2e561c7b7e705b619122e5386d6f99f28f2b6e5a;p=linux-2.6

diff --git a/fs/pipe.c b/fs/pipe.c
index f73492b681..ec228bc9f8 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -17,6 +17,7 @@
 #include <linux/highmem.h>
 #include <linux/pagemap.h>
 #include <linux/audit.h>
+#include <linux/syscalls.h>
 
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
@@ -1075,6 +1076,26 @@ int do_pipe(int *fd)
 	return error;
 }
 
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way Unix traditionally does this, though.
+ */
+asmlinkage long __weak sys_pipe(int __user *fildes)
+{
+	int fd[2];
+	int error;
+
+	error = do_pipe(fd);
+	if (!error) {
+		if (copy_to_user(fildes, fd, sizeof(fd))) {
+			sys_close(fd[0]);
+			sys_close(fd[1]);
+			error = -EFAULT;
+		}
+	}
+	return error;
+}
+
 /*
  * pipefs should _never_ be mounted by userland - too much of security hassle,
  * no real gain from having the whole whorehouse mounted. So we don't need