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btrbk
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Merge b609343b20 into ba3c36c984

pull/601/merge
Zachary Wimer 2025-07-13 17:35:49 -04:00 committed by GitHub
parent ba3c36c984 b609343b20
commit 073d9b499e
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1 changed files with 13 additions and 10 deletions
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ssh_filter_btrbk.sh
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@ -15,6 +15,7 @@ allow_rate_limit=1
allow_stream_buffer=1
allow_compress=1
compress_list='gzip|pigz|bzip2|pbzip2|bzip3|xz|lzop|lz4|zstd'
adaptive_compress_list='zstd'
# note that the backslash is NOT a metacharacter in a POSIX bracket expression!
option_match='-[a-zA-Z0-9=-]+' # matches short as well as long options
@ -79,7 +80,9 @@ reject_filtered_cmd()
if [ -n "${allow_compress}" ]; then
decompress_match="(${compress_list}) -d -c( -[pT][0-9]+)?"
compress_match="(${compress_list}) -c( -[0-9])?( -[pT][0-9]+)?"
compress_match="(${compress_list}) -c( -[0-9]{1,2})?( -[pT][0-9]+)?"
adaptive_decompress_match="(${adaptive_compress_list}) -d -c( -[pT][0-9]+)?( --adapt)?"
adaptive_compress_match="(${adaptive_compress_list}) -c( --adapt)?( -[pT][0-9]+)?"
else
decompress_match=
compress_match=
@ -95,8 +98,8 @@ reject_filtered_cmd()
# allow multiple paths (e.g. "btrfs subvolume snapshot <src> <dst>")
allow_cmd_match="(${allow_list})( ${option_match})*( ${path_match})+"
stream_in_match="(${decompress_match} \| )?(${mbuffer_match} \| )?"
stream_out_match="( \| ${mbuffer_match})?( \| ${compress_match}$)?"
stream_in_match="(${adaptive_decompress_match} \| )?(${decompress_match} \| )?(${mbuffer_match} \| )?"
stream_out_match="( \| ${mbuffer_match})?( \| ${compress_match}$)?( \| ${adaptive_compress_match}$)?"
# `grep`’s `-q`-option is not used as it may cause an exit status of `0` even
# when an error occurred.