Fix: libfstream: don't fail on Windows when reading from a pipe

When piping the output of another program into tar2sqfs.exe, and
the source program terminates, tar2sqfs.exe gets an ERROR_BROKEN_PIPE
when the end is reached and it trys to pre-cache more data. This
commit adds a work around, to propperly handle this as and end-of-file
condition.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/fstream/win32/istream.c b/lib/fstream/win32/istream.c
index 36d7c42..b591584 100644
--- a/lib/fstream/win32/istream.c
+++ b/lib/fstream/win32/istream.c
@@ -30,6 +30,16 @@ static int file_precache(istream_t *strm)
 
 		if (!ReadFile(hnd, strm->buffer + strm->buffer_used,
 			      diff, &actual, NULL)) {
+			DWORD error = GetLastError();
+
+			if (error == ERROR_HANDLE_EOF ||
+			    error == ERROR_BROKEN_PIPE) {
+				strm->eof = true;
+				break;
+			}
+
+			SetLastError(error);
+
 			w32_perror(file->path == NULL ? "stdin" : file->path);
 			return -1;
 		}