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Merge branch 'js/win32-retry-pipe-write-on-enospc' into maint-2.43 

Update to the code that writes to pipes on Windows.

* js/win32-retry-pipe-write-on-enospc:
  win32: special-case `ENOSPC` when writing to a pipe
maint
Junio C Hamano 2024-02-13 14:44:51 -08:00
parent 08b7e46bb1 19ed0dff8f
commit 8d792dcd5a
1 changed files with 15 additions and 4 deletions
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19
compat/mingw.c
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@ -707,13 +707,24 @@ ssize_t mingw_write(int fd, const void *buf, size_t len)
{
ssize_t result = write(fd, buf, len);

if (result < 0 && errno == EINVAL && buf) {
if (result < 0 && (errno == EINVAL || errno == ENOSPC) && buf) {
int orig = errno;

/* check if fd is a pipe */
HANDLE h = (HANDLE) _get_osfhandle(fd);
if (GetFileType(h) == FILE_TYPE_PIPE)
if (GetFileType(h) != FILE_TYPE_PIPE)
errno = orig;
else if (orig == EINVAL)
errno = EPIPE;
else
errno = EINVAL;
else {
DWORD buf_size;

if (!GetNamedPipeInfo(h, NULL, NULL, &buf_size, NULL))
buf_size = 4096;
if (len > buf_size)
return write(fd, buf, buf_size);
errno = orig;
}
}

return result;