From: Pádraig Brady <P@draigBrady.com>
Date: Sun, 9 May 2021 20:55:22 +0000 (+0100)
Subject: copy: handle EOPNOTSUPP from SEEK_DATA
X-Git-Tag: v9.0~105
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=017877bd088284d515753d78b81ca6e6a88c1350;p=thirdparty%2Fcoreutils.git

copy: handle EOPNOTSUPP from SEEK_DATA

* src/copy.c (infer_scantype): Ensure we don't error out
if SEEK_DATA returns EOPNOTSUPP, on systems where this value
is distinct from ENOTSUP.  Generally both of these should be checked.
---

diff --git a/src/copy.c b/src/copy.c
index 69ba94b11c..f626cfed72 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -1246,7 +1246,7 @@ infer_scantype (int fd, struct stat const *sb,
   scan_inference->ext_start = lseek (fd, 0, SEEK_DATA);
   if (0 <= scan_inference->ext_start)
     return LSEEK_SCANTYPE;
-  else if (errno != EINVAL && errno != ENOTSUP)
+  else if (errno != EINVAL && !is_ENOTSUP (errno))
     return errno == ENXIO ? LSEEK_SCANTYPE : ERROR_SCANTYPE;
 #endif