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| author | Stephen Nothnagel <srnoth@users.noreply.github.com> | 2026-04-06 14:54:35 -0400 |
|---|---|---|
| committer | Stephen Nothnagel <srnoth@users.noreply.github.com> | 2026-04-06 14:57:41 -0400 |
| commit | 2509879017df77a0a7478df63d3e30c193c5ed7c (patch) | |
| tree | af22b100ef19d860666cd1dd29b84763dab55704 /src | |
| parent | 0792a6b2b7ab32006ff45832a35de4536547cbd3 (diff) | |
| download | vyos-1x-2509879017df77a0a7478df63d3e30c193c5ed7c.tar.gz vyos-1x-2509879017df77a0a7478df63d3e30c193c5ed7c.zip | |
serial: T8211: fix symlink collisions for multi-port USB serial adapters
Multi-port USB serial adapters (e.g., MosChip MCS7840) where all ports
share the same USB ID_PATH create identical symlink names in
/dev/serial/by-bus/, causing only the last-enumerated port to be
accessible.
Split the existing catch-all rule for devices with .ID_PORT into two
cases:
- Port 0: keeps the base symlink name (backward compatible)
- Port 1+: appends pN suffix (e.g., usb0b1.4.1p1.0p1)
Devices where each port has a unique ID_PATH (e.g., FTDI FT4232H) and
single-port devices are unaffected.
Diffstat (limited to 'src')
| -rw-r--r-- | src/etc/udev/rules.d/90-vyos-serial.rules | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/etc/udev/rules.d/90-vyos-serial.rules b/src/etc/udev/rules.d/90-vyos-serial.rules index 1fe7ee5ba..41cd7b381 100644 --- a/src/etc/udev/rules.d/90-vyos-serial.rules +++ b/src/etc/udev/rules.d/90-vyos-serial.rules @@ -22,7 +22,8 @@ IMPORT{builtin}="path_id", IMPORT{builtin}="usb_id" # (tr -d -) does the replacement # - Replace the first group after ":" to represent the bus relation (sed -e 0,/:/s//b/) indicated by "b" # - Replace the next group after ":" to represent the port relation (sed -e 0,/:/s//p/) indicated by "p" -ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="", PROGRAM="/bin/sh -c 'echo $env{ID_PATH} | cut -d- -f3- | tr -d - | sed -e 0,/:/s//b/ | sed -e 0,/:/s//p/'", SYMLINK+="serial/by-bus/$result" -ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="?*", PROGRAM="/bin/sh -c 'echo $env{ID_PATH} | cut -d- -f3- | tr -d - | sed -e 0,/:/s//b/ | sed -e 0,/:/s//p/'", SYMLINK+="serial/by-bus/$result" +ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="", PROGRAM="/bin/sh -c 'echo $env{ID_PATH} | cut -d- -f3- | tr -d - | sed -e 0,/:/s//b/ | sed -e 0,/:/s//p/'", SYMLINK+="serial/by-bus/$result" +ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="0", PROGRAM="/bin/sh -c 'echo $env{ID_PATH} | cut -d- -f3- | tr -d - | sed -e 0,/:/s//b/ | sed -e 0,/:/s//p/'", SYMLINK+="serial/by-bus/$result" +ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="?*", ENV{.ID_PORT}!="0", PROGRAM="/bin/sh -c 'echo $env{ID_PATH} | cut -d- -f3- | tr -d - | sed -e 0,/:/s//b/ | sed -e 0,/:/s//p/'", SYMLINK+="serial/by-bus/%cp%E{.ID_PORT}" LABEL="serial_end" |