There's no need to set the fd to -1 on ibufs created with imsg_create(3), and it was probably never needed.

While here also fix a fd leak in got-read-pack. We were dup'ing imsg.fd without closing imsg.fd later; instead just use imsg_get_fd() to extract the file descriptor. Tested by falsifian and Kyle Ackerman, thanks! 'go ahead' stsp@

This will hopefully fix issues seen on servers where gotsh exits early for no good reason.

Prevent an endless polling loop on Linux where POLLOUT and POLLHUP can both be reported via pollfd revents.

gotsh was sending errors such as "unexpected end of file" and "unexpected flush-pkt" to the client when the client disconnected immediately after receiving reference announcements from the server. As a result, 'git push' with both sides up-to-date would show an obscure error message: = [up to date] main -> main error: failed to push some refs to 'ssh://example.com/git/repo.git Now we see: = [up to date] main -> main Everything up-to-date ok jamsek

By moving got_serve_parse_command() from lib/serve.c into lib/dial.c as got_dial_parse_command(), we can significantly reduce the amount of symbols gitwrapper depends on indirectly. As a downside, gotsh now needs to link to dial.c. But it only uses the same parsing routine, and any other routines in dial.c would likely cause pledge violations in gotsh if used. No functional change.

ok op@, tracey@

Make gotsh pass all have-lines sent by clients onwards to gotd, reducing size of pack files generated by the repo_read process. Problem reported by naddy@ ok jamsek

it abstracts over the hash type and ensures that object ids are zero'ed before their sha1 digest is written. Needed by the incoming sha256 support. ok stsp@

It will soon grow functions to deal with sha256 too. stsp@ agrees.

In preparation for wide sha256 support; stsp@ agrees. Change done mechanically with find . -iname \*.[cy] -exec sam {} + X ,x/<sha1\.h>/i/\n#include <sha2.h>

ok stsp@

Allow clients to run "got send -d" against gotd. Clients will send a zero-id as new id for a reference and, in the special but more common case of just deleting and not updating, no pack file will be sent. ok and tweaks by stsp@

Export parse_command (now got_serve_parse_command) from lib/serve.c and use it to validate the command line in gotsh instead of just checking that the -c argument starts with 'git-receive-pack' or 'git-upload-pack'. Invalid usage now always fails before opening the socket, while before it wasn't always the case. This also means that invalid usage doesn't count towards the limits. ok jamsek, stsp

ok jamsek

ok jamsek

ok op@

ok op, jamsek

ok stsp@

ok op@