From: Jeff King <peff@peff.net>
To: Jeff Hostetler <git@jeffhostetler.com>
Cc: Junio C Hamano <gitster@pobox.com>,
Jeff Hostetler via GitGitGadget <gitgitgadget@gmail.com>,
git@vger.kernel.org, Jeff Hostetler <jeffhost@microsoft.com>
Subject: Re: [PATCH 00/10] [RFC] Simple IPC Mechanism
Date: Wed, 13 Jan 2021 08:46:02 -0500 [thread overview]
Message-ID: <X/75mip8tYO/mmSW@coredump.intra.peff.net> (raw)
In-Reply-To: <cee527cb-7962-1528-0c70-583ad805e624@jeffhostetler.com>
On Tue, Jan 12, 2021 at 06:25:20PM -0500, Jeff Hostetler wrote:
> On the Unix side, the socket is created inside the .git directory
> by the daemon. Potential clients would have to have access to the
> working directory and the .git directory to connect to the socket,
> so in normal circumstances they would be able to read everything in
> the WD anyway. So again, I don't think it is a problem.
Just thinking out loud, here are two potential issues with putting it in
.git that we may have to deal with later:
- fsmonitor is conceptually a read-only thing (i.e., it would speed up
"git status", etc). And not knowing much about how it will work, I'd
guess that is carried through (i.e., even though you may open the
socket R/W so that you can write requests and read them back, there
is no operation you can request that will overwrite data). But the
running user may not have write access to .git.
As long as we cleanly bail to the non-fsmonitor code paths, I don't
think it's the end of the world. Those read-only users just won't
get to use the speedup (and it may even be desirable). They may
complain, but it is open source so the onus is on them to improve
it. You will not have made anything worse. :)
- repositories may be on network filesystems that do not support unix
sockets.
So it would be nice if there was some way to specify an alternate path
to be used for the socket. Possibly one or both of:
- a config option to give a root path for sockets, where Git would
then canonicalize the $GIT_DIR name and use $root/$GIT_DIR for the
socket. That solves the problem for a given user once for all repos.
- a config option to say "use this path for the socket". This would be
per-repo, but is more flexible and possibly less confusing.
One final note: on some systems[1] the permissions on the socket file
itself are ignored. The safe way to protect it is to make sure the
permissions on the surrounding directory are what you want. See
credential-cache's init_socket_directory() for an example.
-Peff
[1] Sorry, I don't remember which systems. This is one of those random
bits of Unix lore I've carried around for 20 years, and it's
entirely possible it is simply obsolete at this point.
next prev parent reply other threads:[~2021-01-13 13:46 UTC|newest]
Thread overview: 178+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 15:31 [PATCH 00/10] [RFC] Simple IPC Mechanism Jeff Hostetler via GitGitGadget
2021-01-12 15:31 ` [PATCH 01/10] pkt-line: use stack rather than static buffer in packet_write_gently() Jeff Hostetler via GitGitGadget
2021-01-13 13:29 ` Jeff King
2021-01-25 19:34 ` Jeff Hostetler
2021-01-12 15:31 ` [PATCH 02/10] pkt-line: (optionally) libify the packet readers Johannes Schindelin via GitGitGadget
2021-01-12 15:31 ` [PATCH 03/10] pkt-line: optionally skip the flush packet in write_packetized_from_buf() Johannes Schindelin via GitGitGadget
2021-01-12 15:31 ` [PATCH 04/10] pkt-line: accept additional options in read_packetized_to_strbuf() Johannes Schindelin via GitGitGadget
2021-01-12 15:31 ` [PATCH 05/10] simple-ipc: design documentation for new IPC mechanism Jeff Hostetler via GitGitGadget
2021-01-12 16:40 ` Ævar Arnfjörð Bjarmason
2021-01-12 15:31 ` [PATCH 06/10] simple-ipc: add win32 implementation Jeff Hostetler via GitGitGadget
2021-01-12 15:31 ` [PATCH 07/10] unix-socket: create gentle version of unix_stream_listen() Jeff Hostetler via GitGitGadget
2021-01-13 14:06 ` Jeff King
2021-01-14 1:19 ` Chris Torek
2021-01-12 15:31 ` [PATCH 08/10] unix-socket: add no-chdir option to unix_stream_listen_gently() Jeff Hostetler via GitGitGadget
2021-01-12 15:31 ` [PATCH 09/10] simple-ipc: add t/helper/test-simple-ipc and t0052 Jeff Hostetler via GitGitGadget
2021-01-12 15:31 ` [PATCH 10/10] simple-ipc: add Unix domain socket implementation Jeff Hostetler via GitGitGadget
2021-01-12 16:50 ` [PATCH 00/10] [RFC] Simple IPC Mechanism Ævar Arnfjörð Bjarmason
2021-01-12 18:25 ` Jeff Hostetler
2021-01-12 20:01 ` Junio C Hamano
2021-01-12 23:25 ` Jeff Hostetler
2021-01-13 0:13 ` Junio C Hamano
2021-01-13 0:32 ` Jeff Hostetler
2021-01-13 13:46 ` Jeff King [this message]
2021-01-13 15:48 ` Ævar Arnfjörð Bjarmason
2021-02-01 19:45 ` [PATCH v2 00/14] " Jeff Hostetler via GitGitGadget
2021-02-01 19:45 ` [PATCH v2 01/14] ci/install-depends: attempt to fix "brew cask" stuff Junio C Hamano via GitGitGadget
2021-02-01 19:45 ` [PATCH v2 02/14] pkt-line: promote static buffer in packet_write_gently() to callers Jeff Hostetler via GitGitGadget
2021-02-02 9:41 ` Jeff King
2021-02-02 20:33 ` Jeff Hostetler
2021-02-02 22:54 ` Johannes Schindelin
2021-02-03 4:52 ` Jeff King
2021-02-01 19:45 ` [PATCH v2 03/14] pkt-line: add write_packetized_from_buf2() that takes scratch buffer Jeff Hostetler via GitGitGadget
2021-02-02 9:44 ` Jeff King
2021-02-01 19:45 ` [PATCH v2 04/14] pkt-line: optionally skip the flush packet in write_packetized_from_buf() Johannes Schindelin via GitGitGadget
2021-02-02 9:48 ` Jeff King
2021-02-02 22:56 ` Johannes Schindelin
2021-02-05 18:30 ` Jeff Hostetler
2021-02-01 19:45 ` [PATCH v2 05/14] pkt-line: (optionally) libify the packet readers Johannes Schindelin via GitGitGadget
2021-02-01 19:45 ` [PATCH v2 06/14] pkt-line: accept additional options in read_packetized_to_strbuf() Johannes Schindelin via GitGitGadget
2021-02-11 1:52 ` Taylor Blau
2021-02-01 19:45 ` [PATCH v2 07/14] simple-ipc: design documentation for new IPC mechanism Jeff Hostetler via GitGitGadget
2021-02-01 19:45 ` [PATCH v2 08/14] simple-ipc: add win32 implementation Jeff Hostetler via GitGitGadget
2021-02-01 19:45 ` [PATCH v2 09/14] simple-ipc: add t/helper/test-simple-ipc and t0052 Jeff Hostetler via GitGitGadget
2021-02-02 21:35 ` SZEDER Gábor
2021-02-03 4:36 ` Jeff King
2021-02-09 15:45 ` Jeff Hostetler
2021-02-05 19:38 ` SZEDER Gábor
2021-02-01 19:45 ` [PATCH v2 10/14] unix-socket: elimiate static unix_stream_socket() helper function Jeff Hostetler via GitGitGadget
2021-02-02 9:54 ` Jeff King
2021-02-02 9:58 ` Jeff King
2021-02-01 19:45 ` [PATCH v2 11/14] unix-socket: add options to unix_stream_listen() Jeff Hostetler via GitGitGadget
2021-02-02 10:14 ` Jeff King
2021-02-05 23:28 ` Jeff Hostetler
2021-02-09 16:32 ` Jeff King
2021-02-09 17:39 ` Jeff Hostetler
2021-02-10 15:55 ` Jeff King
2021-02-10 21:31 ` Jeff Hostetler
2021-02-01 19:45 ` [PATCH v2 12/14] unix-socket: add no-chdir option " Jeff Hostetler via GitGitGadget
2021-02-02 10:26 ` Jeff King
2021-02-01 19:45 ` [PATCH v2 13/14] unix-socket: do not call die in unix_stream_connect() Jeff Hostetler via GitGitGadget
2021-02-01 19:45 ` [PATCH v2 14/14] simple-ipc: add Unix domain socket implementation Jeff Hostetler via GitGitGadget
2021-02-01 22:20 ` [PATCH v2 00/14] Simple IPC Mechanism Junio C Hamano
2021-02-01 23:26 ` Jeff Hostetler
2021-02-02 23:07 ` Johannes Schindelin
2021-02-04 19:08 ` Junio C Hamano
2021-02-05 13:19 ` candidate branches for `maint`, was " Johannes Schindelin
2021-02-05 19:55 ` Junio C Hamano
2021-02-13 0:09 ` [PATCH v3 00/12] " Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 01/12] pkt-line: eliminate the need for static buffer in packet_write_gently() Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 02/12] pkt-line: do not issue flush packets in write_packetized_*() Johannes Schindelin via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 03/12] pkt-line: (optionally) libify the packet readers Johannes Schindelin via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 04/12] pkt-line: add options argument to read_packetized_to_strbuf() Johannes Schindelin via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 05/12] simple-ipc: design documentation for new IPC mechanism Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 06/12] simple-ipc: add win32 implementation Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 07/12] unix-socket: elimiate static unix_stream_socket() helper function Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 08/12] unix-socket: add backlog size option to unix_stream_listen() Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 09/12] unix-socket: disallow chdir() when creating unix domain sockets Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 10/12] unix-socket: create `unix_stream_server__listen_with_lock()` Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 11/12] simple-ipc: add Unix domain socket implementation Jeff Hostetler via GitGitGadget
2021-02-13 0:09 ` [PATCH v3 12/12] t0052: add simple-ipc tests and t/helper/test-simple-ipc tool Jeff Hostetler via GitGitGadget
2021-02-13 9:30 ` SZEDER Gábor
2021-02-16 15:53 ` Jeff Hostetler
2021-02-17 21:48 ` [PATCH v4 00/12] Simple IPC Mechanism Jeff Hostetler via GitGitGadget
2021-02-17 21:48 ` [PATCH v4 01/12] pkt-line: eliminate the need for static buffer in packet_write_gently() Jeff Hostetler via GitGitGadget
2021-02-26 7:21 ` Jeff King
2021-02-26 19:52 ` Jeff Hostetler
2021-02-26 20:43 ` Jeff King
2021-03-03 19:38 ` Junio C Hamano
2021-03-04 13:29 ` Jeff Hostetler
2021-03-04 20:26 ` Junio C Hamano
2021-02-17 21:48 ` [PATCH v4 02/12] pkt-line: do not issue flush packets in write_packetized_*() Johannes Schindelin via GitGitGadget
2021-02-17 21:48 ` [PATCH v4 03/12] pkt-line: (optionally) libify the packet readers Johannes Schindelin via GitGitGadget
2021-03-03 19:53 ` Junio C Hamano
2021-03-04 14:17 ` Jeff Hostetler
2021-03-04 14:40 ` Jeff King
2021-03-04 20:28 ` Junio C Hamano
2021-02-17 21:48 ` [PATCH v4 04/12] pkt-line: add options argument to read_packetized_to_strbuf() Johannes Schindelin via GitGitGadget
2021-02-17 21:48 ` [PATCH v4 05/12] simple-ipc: design documentation for new IPC mechanism Jeff Hostetler via GitGitGadget
2021-03-03 20:19 ` Junio C Hamano
2021-02-17 21:48 ` [PATCH v4 06/12] simple-ipc: add win32 implementation Jeff Hostetler via GitGitGadget
2021-02-17 21:48 ` [PATCH v4 07/12] unix-socket: elimiate static unix_stream_socket() helper function Jeff Hostetler via GitGitGadget
2021-02-26 7:25 ` Jeff King
2021-03-03 20:41 ` Junio C Hamano
2021-02-17 21:48 ` [PATCH v4 08/12] unix-socket: add backlog size option to unix_stream_listen() Jeff Hostetler via GitGitGadget
2021-02-26 7:30 ` Jeff King
2021-03-03 20:54 ` Junio C Hamano
2021-02-17 21:48 ` [PATCH v4 09/12] unix-socket: disallow chdir() when creating unix domain sockets Jeff Hostetler via GitGitGadget
2021-03-03 22:53 ` Junio C Hamano
2021-03-04 14:56 ` Jeff King
2021-03-04 20:34 ` Junio C Hamano
2021-03-04 23:34 ` Junio C Hamano
2021-03-05 9:02 ` Jeff King
2021-03-05 9:25 ` Jeff King
2021-03-05 11:59 ` Chris Torek
2021-03-05 17:33 ` Jeff Hostetler
2021-03-05 17:53 ` Junio C Hamano
2021-03-05 21:30 ` Jeff Hostetler
2021-03-05 21:52 ` Junio C Hamano
2021-02-17 21:48 ` [PATCH v4 10/12] unix-socket: create `unix_stream_server__listen_with_lock()` Jeff Hostetler via GitGitGadget
2021-02-26 7:56 ` Jeff King
2021-03-02 23:50 ` Jeff Hostetler
2021-03-04 15:13 ` Jeff King
2021-02-17 21:48 ` [PATCH v4 11/12] simple-ipc: add Unix domain socket implementation Jeff Hostetler via GitGitGadget
2021-02-17 21:48 ` [PATCH v4 12/12] t0052: add simple-ipc tests and t/helper/test-simple-ipc tool Jeff Hostetler via GitGitGadget
2021-03-02 9:44 ` Jeff King
2021-03-03 15:25 ` Jeff Hostetler
2021-02-25 19:39 ` [PATCH v4 00/12] Simple IPC Mechanism Junio C Hamano
2021-02-26 7:59 ` Jeff King
2021-02-26 20:18 ` Jeff Hostetler
2021-02-26 20:50 ` Jeff King
2021-03-03 19:29 ` Junio C Hamano
2021-03-09 15:02 ` [PATCH v5 " Jeff Hostetler via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 01/12] pkt-line: eliminate the need for static buffer in packet_write_gently() Jeff Hostetler via GitGitGadget
2021-03-09 23:48 ` Junio C Hamano
2021-03-11 19:29 ` Jeff King
2021-03-11 20:32 ` Junio C Hamano
2021-03-11 20:53 ` Jeff King
2021-03-09 15:02 ` [PATCH v5 02/12] pkt-line: do not issue flush packets in write_packetized_*() Johannes Schindelin via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 03/12] pkt-line: add PACKET_READ_GENTLE_ON_READ_ERROR option Johannes Schindelin via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 04/12] pkt-line: add options argument to read_packetized_to_strbuf() Johannes Schindelin via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 05/12] simple-ipc: design documentation for new IPC mechanism Jeff Hostetler via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 06/12] simple-ipc: add win32 implementation Jeff Hostetler via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 07/12] unix-socket: eliminate static unix_stream_socket() helper function Jeff Hostetler via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 08/12] unix-socket: add backlog size option to unix_stream_listen() Jeff Hostetler via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 09/12] unix-socket: disallow chdir() when creating unix domain sockets Jeff Hostetler via GitGitGadget
2021-03-09 15:02 ` [PATCH v5 10/12] unix-stream-server: create unix domain socket under lock Jeff Hostetler via GitGitGadget
2021-03-10 0:18 ` Junio C Hamano
2021-03-09 15:02 ` [PATCH v5 11/12] simple-ipc: add Unix domain socket implementation Jeff Hostetler via GitGitGadget
2021-03-10 0:08 ` Junio C Hamano
2021-03-15 19:56 ` Jeff Hostetler
2021-03-09 15:02 ` [PATCH v5 12/12] t0052: add simple-ipc tests and t/helper/test-simple-ipc tool Jeff Hostetler via GitGitGadget
2021-03-09 23:28 ` [PATCH v5 00/12] Simple IPC Mechanism Junio C Hamano
2021-03-15 21:08 ` [PATCH v6 " Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 01/12] pkt-line: eliminate the need for static buffer in packet_write_gently() Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 02/12] pkt-line: do not issue flush packets in write_packetized_*() Johannes Schindelin via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 03/12] pkt-line: add PACKET_READ_GENTLE_ON_READ_ERROR option Johannes Schindelin via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 04/12] pkt-line: add options argument to read_packetized_to_strbuf() Johannes Schindelin via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 05/12] simple-ipc: design documentation for new IPC mechanism Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 06/12] simple-ipc: add win32 implementation Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 07/12] unix-socket: eliminate static unix_stream_socket() helper function Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 08/12] unix-socket: add backlog size option to unix_stream_listen() Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 09/12] unix-socket: disallow chdir() when creating unix domain sockets Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 10/12] unix-stream-server: create unix domain socket under lock Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 11/12] simple-ipc: add Unix domain socket implementation Jeff Hostetler via GitGitGadget
2021-03-15 21:08 ` [PATCH v6 12/12] t0052: add simple-ipc tests and t/helper/test-simple-ipc tool Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 00/12] Simple IPC Mechanism Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 01/12] pkt-line: eliminate the need for static buffer in packet_write_gently() Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 02/12] pkt-line: do not issue flush packets in write_packetized_*() Johannes Schindelin via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 03/12] pkt-line: add PACKET_READ_GENTLE_ON_READ_ERROR option Johannes Schindelin via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 04/12] pkt-line: add options argument to read_packetized_to_strbuf() Johannes Schindelin via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 05/12] simple-ipc: design documentation for new IPC mechanism Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 06/12] simple-ipc: add win32 implementation Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 07/12] unix-socket: eliminate static unix_stream_socket() helper function Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 08/12] unix-socket: add backlog size option to unix_stream_listen() Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 09/12] unix-socket: disallow chdir() when creating unix domain sockets Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 10/12] unix-stream-server: create unix domain socket under lock Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 11/12] simple-ipc: add Unix domain socket implementation Jeff Hostetler via GitGitGadget
2021-03-22 10:29 ` [PATCH v7 12/12] t0052: add simple-ipc tests and t/helper/test-simple-ipc tool Jeff Hostetler via GitGitGadget
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