recv_sideband: Bands #2 and #3 always go to stderr

This removes the last parameter of recv_sideband, by which the callers
told which channel bands #2 and #3 should be written to.

Sayeth Shawn Pearce:

   The definition of the streams in the current sideband protocol
   are rather well defined for the one protocol that uses it,
   fetch-pack/receive-pack:

     stream #1:  pack data
     stream #2:  stderr messages, progress, meant for tty
     stream #3:  abort message, remote is dead, goodbye!

Since both callers of the function passed 2 for the parameter, we hereby
remove it and send bands #2 and #3 to stderr explicitly using fprintf.

This has the nice side-effect that these two streams pass through our
ANSI emulation layer on Windows.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-archive.c b/builtin-archive.c
index 60adef93632ec64c528e443cf1fb3d656a54e36c..ab50cebba0e6798996cc007ced9079c3f0b94a29 100644 (file)
--- a/builtin-archive.c
+++ b/builtin-archive.c
@@ -52,7 +52,7 @@ static int run_remote_archiver(int argc, const char **argv,
                die("git archive: expected a flush");
 
        /* Now, start reading from fd[0] and spit it out to stdout */
-       rv = recv_sideband("archive", fd[0], 1, 2);
+       rv = recv_sideband("archive", fd[0], 1);
        close(fd[0]);
        close(fd[1]);
        rv |= finish_connect(conn);

diff --git a/builtin-fetch-pack.c b/builtin-fetch-pack.c
index c2e5adc8847e8ffa94bd009121b7a295f3f0512e..2b360994bf86fabe8505d5afa7621c9f87a0ee7e 100644 (file)
--- a/builtin-fetch-pack.c
+++ b/builtin-fetch-pack.c
@@ -482,7 +482,7 @@ static int sideband_demux(int fd, void *data)
 {
        int *xd = data;
 
-       return recv_sideband("fetch-pack", xd[0], fd, 2);
+       return recv_sideband("fetch-pack", xd[0], fd);
 }
 
 static int get_pack(int xd[2], char **pack_lockfile)

diff --git a/sideband.c b/sideband.c
index cca3360546dabf9f018b882f690bd1dea9de534d..899b1ff36619d0077dced9da77f538ab98396a83 100644 (file)
--- a/sideband.c
+++ b/sideband.c
@@ -19,7 +19,7 @@
 
 #define FIX_SIZE 10  /* large enough for any of the above */
 
-int recv_sideband(const char *me, int in_stream, int out, int err)
+int recv_sideband(const char *me, int in_stream, int out)
 {
        unsigned pf = strlen(PREFIX);
        unsigned sf;
@@ -41,8 +41,7 @@ int recv_sideband(const char *me, int in_stream, int out, int err)
                if (len == 0)
                        break;
                if (len < 1) {
-                       len = sprintf(buf, "%s: protocol error: no band designator\n", me);
-                       safe_write(err, buf, len);
+                       fprintf(stderr, "%s: protocol error: no band designator\n", me);
                        return SIDEBAND_PROTOCOL_ERROR;
                }
                band = buf[pf] & 0xff;
@@ -50,8 +49,8 @@ int recv_sideband(const char *me, int in_stream, int out, int err)
                switch (band) {
                case 3:
                        buf[pf] = ' ';
-                       buf[pf+1+len] = '\n';
-                       safe_write(err, buf, pf+1+len+1);
+                       buf[pf+1+len] = '\0';
+                       fprintf(stderr, "%s\n", buf);
                        return SIDEBAND_REMOTE_ERROR;
                case 2:
                        buf[pf] = ' ';
@@ -95,12 +94,12 @@ int recv_sideband(const char *me, int in_stream, int out, int err)
                                        memcpy(save, b + brk, sf);
                                        b[brk + sf - 1] = b[brk - 1];
                                        memcpy(b + brk - 1, suffix, sf);
-                                       safe_write(err, b, brk + sf);
+                                       fprintf(stderr, "%.*s", brk + sf, b);
                                        memcpy(b + brk, save, sf);
                                        len -= brk;
                                } else {
                                        int l = brk ? brk : len;
-                                       safe_write(err, b, l);
+                                       fprintf(stderr, "%.*s", l, b);
                                        len -= l;
                                }
 
@@ -112,10 +111,8 @@ int recv_sideband(const char *me, int in_stream, int out, int err)
                        safe_write(out, buf + pf+1, len);
                        continue;
                default:
-                       len = sprintf(buf,
-                                     "%s: protocol error: bad band #%d\n",
-                                     me, band);
-                       safe_write(err, buf, len);
+                       fprintf(stderr, "%s: protocol error: bad band #%d\n",
+                               me, band);
                        return SIDEBAND_PROTOCOL_ERROR;
                }
        }

diff --git a/sideband.h b/sideband.h
index a84b6917c7a17b5f8a922540801e98d46aa24431..d72db35d1e0dc109f75b292762013c11b86426aa 100644 (file)
--- a/sideband.h
+++ b/sideband.h
@@ -7,7 +7,7 @@
 #define DEFAULT_PACKET_MAX 1000
 #define LARGE_PACKET_MAX 65520
 
-int recv_sideband(const char *me, int in_stream, int out, int err);
+int recv_sideband(const char *me, int in_stream, int out);
 ssize_t send_sideband(int fd, int band, const char *data, ssize_t sz, int packet_max);
 
 #endif