From: Andrew M. Kuchling <amk@amk.ca>
Date: Tue, 15 Jul 2003 12:37:46 +0000 (+0000)
Subject: [Patch #708374] Only apply the check for file size if the file is a regular file... 
X-Git-Tag: v2.3c1~77
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a3016678ed5697ae1a21ef328573c714a6d82b8c;p=python

[Patch #708374] Only apply the check for file size if the file is a regular file, not a character or block device.
---

diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c
index 56033e8d4e..a61a37a10c 100644
--- a/Modules/mmapmodule.c
+++ b/Modules/mmapmodule.c
@@ -901,7 +901,8 @@ new_mmap_object(PyObject *self, PyObject *args, PyObject *kwdict)
 	/* on OpenVMS we must ensure that all bytes are written to the file */
 	fsync(fd);
 #  endif
-	if (fstat(fd, &st) == 0 && (size_t)map_size > st.st_size) {
+	if (fstat(fd, &st) == 0 && S_ISREG(st.st_mode) &&
+	    (size_t)map_size > st.st_size) {
 		PyErr_SetString(PyExc_ValueError, 
 				"mmap length is greater than file size");
 		return NULL;