t7001: add test case for --dry-run

diff --git a/pkt-line.c b/pkt-line.c
index 7db9119573abe2c8308bd37c670c027c07b425c8..647bbd3bceda71f15fdf137a37f3fa53e6fa6d86 100644 (file)
--- a/pkt-line.c
+++ b/pkt-line.c
@@ -94,9 +94,9 @@ void packet_flush(int fd)
 int packet_flush_gently(int fd)
 {
        packet_trace("0000", 4, 1);
-       if (write_in_full(fd, "0000", 4) == 4)
-               return 0;
-       return error("flush packet write failed");
+       if (write_in_full(fd, "0000", 4) < 0)
+               return error("flush packet write failed");
+       return 0;
 }
 
 void packet_buf_flush(struct strbuf *buf)
@@ -136,19 +136,19 @@ static void format_packet(struct strbuf *out, const char *fmt, va_list args)
 static int packet_write_fmt_1(int fd, int gently,
                              const char *fmt, va_list args)
 {
-       struct strbuf buf = STRBUF_INIT;
-       ssize_t count;
+       static struct strbuf buf = STRBUF_INIT;
 
+       strbuf_reset(&buf);
        format_packet(&buf, fmt, args);
-       count = write_in_full(fd, buf.buf, buf.len);
-       if (count == buf.len)
-               return 0;
-
-       if (!gently) {
-               check_pipe(errno);
-               die_errno("packet write with format failed");
+       if (write_in_full(fd, buf.buf, buf.len) < 0) {
+               if (!gently) {
+                       check_pipe(errno);
+                       die_errno("packet write with format failed");
+               }
+               return error("packet write with format failed");
        }
-       return error("packet write with format failed");
+
+       return 0;
 }
 
 void packet_write_fmt(int fd, const char *fmt, ...)
@@ -183,9 +183,9 @@ static int packet_write_gently(const int fd_out, const char *buf, size_t size)
        packet_size = size + 4;
        set_packet_header(packet_write_buffer, packet_size);
        memcpy(packet_write_buffer + 4, buf, size);
-       if (write_in_full(fd_out, packet_write_buffer, packet_size) == packet_size)
-               return 0;
-       return error("packet write failed");
+       if (write_in_full(fd_out, packet_write_buffer, packet_size) < 0)
+               return error("packet write failed");
+       return 0;
 }
 
 void packet_buf_write(struct strbuf *buf, const char *fmt, ...)