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symlink-trust: -k/--copy-dirlinks, -K/--keep-dirlinks, --munge-links (+real -l/--links)
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Adds symlink-target transmission (File is_symlink+symlink_target, STATUS_SYMLINK
frame, chunk type 2), munge-links sender containment + receiver-side symmetric
target containment, keep-dirlinks confined dir-symlink following (O_NOFOLLOW
realpath-rechecked), and fixes -l to copy symlinks as symlinks. munge_links +
keep_dirlinks cross the wire; copy_dirlinks client-only. PROTOCOL_VERSION
2.12.0->2.13.0. Review fixes: receiver rejects absolute/.. targets, gated unmunge,
-K O_NOFOLLOW+re-fstat, keep_dirlinks set once at config-accept, rel_buf overflow
fails the walk.
This commit is contained in:
TapTap
2026-09-08 22:27:53 +02:00
parent 0de859b302
commit 820188c2cc
22 changed files with 945 additions and 39 deletions
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src/client/client_cli.c
+3
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@@ -476,6 +476,9 @@ static const OptionEntry OPTION_TABLE[] = {
{"--copy-links", NULL, OPT_FLAG, offsetof(Config, copy_links)},
{"--safe-links", NULL, OPT_FLAG, offsetof(Config, safe_links)},
{"--copy-unsafe-links", NULL, OPT_FLAG, offsetof(Config, copy_unsafe_links)},
{"--copy-dirlinks", "-k", OPT_FLAG, offsetof(Config, copy_dirlinks)},
{"--keep-dirlinks", "-K", OPT_FLAG, offsetof(Config, keep_dirlinks)},
{"--munge-links", NULL, OPT_FLAG, offsetof(Config, munge_links)},
{"--hard-links", "-H", OPT_FLAG, offsetof(Config, preserve_hard_links)},
{"--sparse", "-S", OPT_FLAG, offsetof(Config, preserve_sparse)},
{"--inplace", NULL, OPT_FLAG, offsetof(Config, inplace)},