Commit Briefs

13b2bc374c Stefan Sperling

introduce gotd(8), a Git repository server reachable via ssh(1)

This is an initial barebones implementation which provides the absolute minimum of functionality required to serve got(1) and git(1) clients. Basic fetch/send functionality has been tested and seems to work here, but this server is not yet expected to be stable. More testing is welcome. See the man pages for setup instructions. The current design uses one reader and one writer process per repository, which will have to be extended to N readers and N writers in the future. At startup, each process will chroot(2) into its assigned repository. This works because gotd(8) can only be started as root, and will then fork+exec, chroot, and privdrop. At present the parent process runs with the following pledge(2) promises: "stdio rpath wpath cpath proc getpw sendfd recvfd fattr flock unix unveil" The parent is the only process able to modify the repository in a way that becomes visible to Git clients. The parent uses unveil(2) to restrict its view of the filesystem to /tmp and the repositories listed in the configuration file gotd.conf(5). Per-repository chroot(2) processes use "stdio rpath sendfd recvfd". The writer defers to the parent for modifying references in the repository to point at newly uploaded commits. The reader is fine without such help, because Git repositories can be read without having to create any lock-files. gotd(8) requires a dedicated user ID, which should own repositories on the filesystem, and a separate secondary group, which should not have filesystem-level repository access, and must be allowed access to the gotd(8) socket. To obtain Git repository access, users must be members of this secondary group, and must have their login shell set to gotsh(1). gotsh(1) connects to the gotd(8) socket and speaks Git-protocol towards the client on the other end of the SSH connection. gotsh(1) is not an interactive command shell. At present, authenticated clients are granted read/write access to all repositories and all references (except for the "refs/got/" and the "refs/remotes/" namespaces, which are already being protected from modification). While complicated access control mechanism are not a design goal, making it possible to safely offer anonymous Git repository access over ssh(1) is on the road map.


d294b1dcc0 Stefan Sperling

allow got_object_parse_tree to reuse entries buffer allocations for speed

ok millert@


9985f404ff Stefan Sperling

parse tree entries into an array instead of a pathlist

Avoids some extra malloc/free in a performance-critical path. ok op@




08578a35f6 Stefan Sperling

make close(2) failure checks consistent; check 'close() == -1' everywhere

ok millert, naddy


56b63ca4ab Stefan Sperling

make fclose(3) failure checks consistent; check 'fclose() == EOF' everywhere

ok millert, naddy


23c57b285f Christian Weisgerber

Stop including <sys/syslimits.h> directly.

POSIX says the limits defined there are available from <limits.h>, which almost all affected source files already included anyway. ok millert stsp


81a12da586 Christian Weisgerber

do not rely on <zlib.h> to pull in <unistd.h>

ok stsp



5aa813935b Stefan Sperling

add copyright year for files already touched in 2020



b64b1f953a Stefan Sperling

plug a memory leak; parsed tree entries were not freed




638f902404 Stefan Sperling

rename got_error_prefix_errno() to got_error_from_errno()


656b1f76d3 joshua stein

while (1) -> for (;;)


230a42bdc6 joshua stein

got_error_from_errno -> got_error_prefix_errno

also add got_error_prefix_errno2 and got_error_prefix_errno3 which should hopefully all be merged into a single function with variadic args (but can't alloc mem)


3a6ce05aff Stefan Sperling

check for errors from close(2)


fb43ecf150 Stefan Sperling

check for errors from fclose()


13c729f710 Stefan Sperling

eliminate got_object_open() round-trip when opening trees


80d5f1347d Stefan Sperling

don't be noisy on stderr when Ctrl-C is hit


99437157b9 Stefan Sperling

abort checkout operations cleanly when Ctrl-C is hit


2ff12563f8 Stefan Sperling

fix 'make PROFILE=1' build


876c234bd6 Stefan Sperling

start reading pack files with privsep; still WIP