[newlib-cygwin/cygwin-3_4-branch] Cygwin: fsync: Fix EINVAL for block device.
Takashi Yano
tyan0@sourceware.org
Sun Jan 22 10:02:35 GMT 2023
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=17ad18afc62ceefe01273e4c2fff9114275ab909
commit 17ad18afc62ceefe01273e4c2fff9114275ab909
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Sat Jan 21 21:33:03 2023 +0900
Cygwin: fsync: Fix EINVAL for block device.
The commit af8a7c13b516 has a problem that fsync returns EINVAL for
block device. This patch treats block devices as a special case.
https://cygwin.com/pipermail/cygwin/2023-January/252916.html
Fixes: af8a7c13b516 ("Cygwin: fsync: Return EINVAL for special files.")
Reported-by: Yano Ray <yanorei@hotmail.co.jp>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Diff:
---
winsup/cygwin/fhandler/base.cc | 3 ++-
winsup/cygwin/release/3.4.6 | 5 +++++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/winsup/cygwin/fhandler/base.cc b/winsup/cygwin/fhandler/base.cc
index b2738cf20..9b49ec7b9 100644
--- a/winsup/cygwin/fhandler/base.cc
+++ b/winsup/cygwin/fhandler/base.cc
@@ -1728,7 +1728,8 @@ fhandler_base::utimens (const struct timespec *tvp)
int
fhandler_base::fsync ()
{
- if (!get_handle () || nohandle () || pc.isspecial ())
+ if (!get_handle () || nohandle ()
+ || (pc.isspecial () && !S_ISBLK (pc.dev.mode ())))
{
set_errno (EINVAL);
return -1;
diff --git a/winsup/cygwin/release/3.4.6 b/winsup/cygwin/release/3.4.6
new file mode 100644
index 000000000..c1476ff46
--- /dev/null
+++ b/winsup/cygwin/release/3.4.6
@@ -0,0 +1,5 @@
+Bug Fixes
+---------
+
+Fix a problem that fsync returns EINVAL for block device.
+Addresses: https://cygwin.com/pipermail/cygwin/2023-January/252916.html
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