ref: 956ff38121ca10af2fc33dd1700f29bb80bf716c
dir: /sys/man/4/rdbfs/
.TH RDBFS 4 .SH NAME rdbfs \- remote kernel debugging file system .SH SYNOPSIS .B rdbfs [ .B -d ] [ .B -p .I pid ] [ .B -s .I srvname ] [ .B -t .I text ] [ .I device ] .SH DESCRIPTION .I Rdbfs presents in .BI /proc/ pid (default .BR /proc/1 ) a set of process files for debugging a kernel over the serial line .I device (default .BR /dev/eia0 ). If the .B -s option is given, .I rdbfs will post its channel in .BI /srv/ srvname (see .IR srv (3)), allowing the session to be shared or reattached later. .PP The .B text file presented is just a copy of .I text (default .BR /386/9pc ). It can usually be ignored, since the debuggers open kernel files directly rather than using .BI /proc/ n /text\fR. .PP Kernels can be remotely debugged only when they are suspended and serving a textual debugging protocol over their serial lines. (see .IR cons (3)) .PP Because the debugging protocol is textual, a console provided by .IR consolefs (4) may be substituted for the serial device. .SH SOURCE .B /sys/src/cmd/rdbfs.c .br .B /sys/src/9/port/rdb.c .SH "SEE ALSO" .IR acid (1), .IR db (1), .IR cons (3), .IR consolefs (4)