* [PATCH] Cygwin: fix mknod (64-bit only)
@ 2022-05-22 16:18 Ken Brown
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From: Ken Brown @ 2022-05-22 16:18 UTC (permalink / raw)
To: cygwin-patches
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Patch attached. I'll push it in a few days if no one sees anything wrong with it.
Ken
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From 54cfc70ff3a548d861cb59ac6b2084cc6b791ec2 Mon Sep 17 00:00:00 2001
From: Ken Brown <kbrown@cornell.edu>
Date: Sun, 22 May 2022 11:43:44 -0400
Subject: [PATCH] Cygwin: fix mknod (64-bit only)
The current definition of mknod in syscalls.cc has a third argument of
type __dev16_t instead of dev_t. Fix this on 64-bit Cygwin by
exporting mknod as an alias for mknod32. (There is no problem on
32-bit because mknod is redirected to mknod32 via NEW_FUNCTIONS in
Makefile.am.)
Addresses: https://cygwin.com/pipermail/cygwin-developers/2022-May/012589.html
---
winsup/cygwin/release/3.3.6 | 3 +++
winsup/cygwin/syscalls.cc | 4 ++++
2 files changed, 7 insertions(+)
diff --git a/winsup/cygwin/release/3.3.6 b/winsup/cygwin/release/3.3.6
index 6d722433f..135f33155 100644
--- a/winsup/cygwin/release/3.3.6
+++ b/winsup/cygwin/release/3.3.6
@@ -7,3 +7,6 @@ Bug Fixes
- Fix killpg failing because the exec'ing as well as the exec'ed
process are not in the pidlist for a brief moment.
Addresses: https://cygwin.com/pipermail/cygwin/2022-May/251479.html
+
+- Fix mknod (64-bit only), whose definition didn't match its prototype.
+ Addresses: https://cygwin.com/pipermail/cygwin-developers/2022-May/012589.html
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index 3a652c4f4..344d1d329 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -3490,11 +3490,15 @@ mknod32 (const char *path, mode_t mode, dev_t dev)
return -1;
}
+#ifdef __i386__
extern "C" int
mknod (const char *_path, mode_t mode, __dev16_t dev)
{
return mknod32 (_path, mode, (dev_t) dev);
}
+#else
+EXPORT_ALIAS (mknod32, mknod)
+#endif
extern "C" int
mkfifo (const char *path, mode_t mode)
--
2.36.1
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