From ec9fbad908d5f65f71717506d070a40acca89f5b Mon Sep 17 00:00:00 2001 From: Eli Zaretskii Date: Wed, 21 Dec 2022 21:23:51 +0200 Subject: [PATCH] Fix write-region to null device on MS-Windows * src/fileio.c (write_region) [WINDOWSNT]: Ignore EBADF errors from fsync -- this means fsync is not supported for this file. Happens, for example, with the null device. (Bug#59545) --- src/fileio.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/src/fileio.c b/src/fileio.c index 835c42cc0a4..31353be5d5a 100644 --- a/src/fileio.c +++ b/src/fileio.c @@ -5387,12 +5387,16 @@ write_region (Lisp_Object start, Lisp_Object end, Lisp_Object filename, { /* Transfer data and metadata to disk, retrying if interrupted. fsync can report a write failure here, e.g., due to disk full - under NFS. But ignore EINVAL, which means fsync is not - supported on this file. */ + under NFS. But ignore EINVAL (and EBADF on Windows), which + means fsync is not supported on this file. */ while (fsync (desc) != 0) if (errno != EINTR) { - if (errno != EINVAL) + if (errno != EINVAL +#ifdef WINDOWSNT + && errno != EBADF +#endif + ) ok = 0, save_errno = errno; break; } -- 2.39.2