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debugging RancherOS : Ctrl + C signal not working in v0.4.2 #687
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| dockerdaemon--log-optmax-size=25m--log-optmax-file=2-soverlay-bdocker-sys--fixed-cidr172.18.42.1/16--restart=false-g/var/lib/system-docker-Groot-Hunix:///var/run/system-docker.sock--userland-proxy=false: | |
| CAUGHT: | |
| CAUGHT: SIGSYS | |
| CAUGHT: SIGPWR | |
| CAUGHT: SIGPOLL | |
| CAUGHT: SIGIO | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGVTALRM | |
| CAUGHT: SIGXFSZ | |
| CAUGHT: SIGURG | |
| CAUGHT: SIGTTOU | |
| CAUGHT: SIGTTIN | |
| CAUGHT: SIGTSTP | |
| CAUGHT: SIGSTOP | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTKFLT | |
| CAUGHT: SIGURS1 | |
| CAUGHT: SIGKILL | |
| CAUGHT: SIGFPE | |
| CAUGHT: SIGBUS | |
| CAUGHT: SIGABRT | |
| CAUGHT: SIGTRAP | |
| CAUGHT: SIGILL | |
| CAUGHT: SIGQUIT | |
| CAUGHT: SIGINT | |
| CAUGHT: SIGHUP | |
| respawn-f/etc/respawn.conf: | |
| CAUGHT: | |
| CAUGHT: SIGSYS | |
| CAUGHT: SIGPWR | |
| CAUGHT: SIGPOLL | |
| CAUGHT: SIGIO | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGVTALRM | |
| CAUGHT: SIGXFSZ | |
| CAUGHT: SIGURG | |
| CAUGHT: SIGTTOU | |
| CAUGHT: SIGTTIN | |
| CAUGHT: SIGTSTP | |
| CAUGHT: SIGSTOP | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTKFLT | |
| CAUGHT: SIGURS1 | |
| CAUGHT: SIGKILL | |
| CAUGHT: SIGFPE | |
| CAUGHT: SIGBUS | |
| CAUGHT: SIGABRT | |
| CAUGHT: SIGTRAP | |
| CAUGHT: SIGILL | |
| CAUGHT: SIGQUIT | |
| CAUGHT: SIGINT | |
| CAUGHT: SIGHUP | |
| /usr/sbin/sshd-D: | |
| IGNORED: SIGHUP | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTERM | |
| CAUGHT: SIGQUIT | |
| CAUGHT: SIGHUP | |
| sshd: rancher [priv]: | |
| IGNORED: SIGPIPE | |
| IGNORED: SIGHUP | |
| CAUGHT: SIGTERM | |
| CAUGHT: SIGALRM | |
| CAUGHT: SIGHUP | |
| sshd: rancher@pts/0: | |
| IGNORED: SIGHUP | |
| CAUGHT: SIGHUP | |
| -bash: | |
| BLOCKED: SIGHUP | |
| IGNORED: SIGTSTP | |
| IGNORED: SIGQUIT | |
| IGNORED: SIGINT | |
| IGNORED: SIGHUP | |
| CAUGHT: SIGSYS | |
| CAUGHT: SIGPWR | |
| CAUGHT: SIGIO | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGVTALRM | |
| CAUGHT: SIGXFSZ | |
| CAUGHT: SIGXCPU | |
| CAUGHT: SIGTTOU | |
| CAUGHT: SIGTTIN | |
| CAUGHT: SIGTSTP | |
| CAUGHT: SIGSTOP | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTERM | |
| CAUGHT: SIGFPE | |
| CAUGHT: SIGBUS | |
| CAUGHT: SIGABRT | |
| CAUGHT: SIGILL | |
| CAUGHT: SIGHUP | |
| ./htop-0.6.6-static: | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGALRM | |
| CAUGHT: SIGKILL | |
| CAUGHT: SIGHUP | |
| /usr/bin/user-docker: | |
| CAUGHT: | |
| CAUGHT: SIGSYS | |
| CAUGHT: SIGPWR | |
| CAUGHT: SIGPOLL | |
| CAUGHT: SIGIO | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGVTALRM | |
| CAUGHT: SIGXFSZ | |
| CAUGHT: SIGURG | |
| CAUGHT: SIGTTOU | |
| CAUGHT: SIGTTIN | |
| CAUGHT: SIGTSTP | |
| CAUGHT: SIGSTOP | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTKFLT | |
| CAUGHT: SIGURS1 | |
| CAUGHT: SIGKILL | |
| CAUGHT: SIGFPE | |
| CAUGHT: SIGBUS | |
| CAUGHT: SIGABRT | |
| CAUGHT: SIGTRAP | |
| CAUGHT: SIGILL | |
| CAUGHT: SIGQUIT | |
| CAUGHT: SIGINT | |
| CAUGHT: SIGHUP |
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| 0.4.2 | |
| dockerdaemon--log-optmax-size=25m--log-optmax-file=2-soverlay-bdocker-sys--fixed-cidr172.18.42.1/16--restart=false-g/var/lib/system-docker-Groot-Hunix:///var/run/system-docker.sock--userland-proxy=false: | |
| CAUGHT: | |
| CAUGHT: SIGSYS | |
| CAUGHT: SIGPWR | |
| CAUGHT: SIGPOLL | |
| CAUGHT: SIGIO | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGVTALRM | |
| CAUGHT: SIGXFSZ | |
| CAUGHT: SIGURG | |
| CAUGHT: SIGTTOU | |
| CAUGHT: SIGTTIN | |
| CAUGHT: SIGTSTP | |
| CAUGHT: SIGSTOP | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTKFLT | |
| CAUGHT: SIGURS1 | |
| CAUGHT: SIGKILL | |
| CAUGHT: SIGFPE | |
| CAUGHT: SIGBUS | |
| CAUGHT: SIGABRT | |
| CAUGHT: SIGTRAP | |
| CAUGHT: SIGILL | |
| CAUGHT: SIGQUIT | |
| CAUGHT: SIGINT | |
| CAUGHT: SIGHUP | |
| respawn-f/etc/respawn.conf: | |
| BLOCKED: SIGSYS | |
| BLOCKED: SIGPWR | |
| BLOCKED: SIGPOLL | |
| BLOCKED: SIGVTALRM | |
| BLOCKED: SIGTTOU | |
| BLOCKED: SIGTSTP | |
| BLOCKED: SIGSTOP | |
| BLOCKED: SIGCONT | |
| BLOCKED: SIGALRM | |
| BLOCKED: SIGUSR2 | |
| BLOCKED: SIGSEGV | |
| BLOCKED: SIGURS1 | |
| BLOCKED: SIGKILL | |
| BLOCKED: SIGFPE | |
| BLOCKED: SIGBUS | |
| BLOCKED: SIGABRT | |
| BLOCKED: SIGILL | |
| BLOCKED: SIGQUIT | |
| BLOCKED: SIGINT | |
| BLOCKED: SIGHUP | |
| CAUGHT: | |
| CAUGHT: SIGSYS | |
| CAUGHT: SIGPWR | |
| CAUGHT: SIGPOLL | |
| CAUGHT: SIGIO | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGVTALRM | |
| CAUGHT: SIGXFSZ | |
| CAUGHT: SIGURG | |
| CAUGHT: SIGTTOU | |
| CAUGHT: SIGTTIN | |
| CAUGHT: SIGTSTP | |
| CAUGHT: SIGSTOP | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTKFLT | |
| CAUGHT: SIGURS1 | |
| CAUGHT: SIGKILL | |
| CAUGHT: SIGFPE | |
| CAUGHT: SIGBUS | |
| CAUGHT: SIGABRT | |
| CAUGHT: SIGTRAP | |
| CAUGHT: SIGILL | |
| CAUGHT: SIGQUIT | |
| CAUGHT: SIGINT | |
| CAUGHT: SIGHUP | |
| /usr/sbin/sshd-D: | |
| BLOCKED: SIGSYS | |
| BLOCKED: SIGPWR | |
| BLOCKED: SIGPOLL | |
| BLOCKED: SIGVTALRM | |
| BLOCKED: SIGTTOU | |
| BLOCKED: SIGTSTP | |
| BLOCKED: SIGSTOP | |
| BLOCKED: SIGCONT | |
| BLOCKED: SIGALRM | |
| BLOCKED: SIGUSR2 | |
| BLOCKED: SIGSEGV | |
| BLOCKED: SIGURS1 | |
| BLOCKED: SIGKILL | |
| BLOCKED: SIGFPE | |
| BLOCKED: SIGBUS | |
| BLOCKED: SIGABRT | |
| BLOCKED: SIGILL | |
| BLOCKED: SIGQUIT | |
| BLOCKED: SIGINT | |
| BLOCKED: SIGHUP | |
| IGNORED: SIGHUP | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTERM | |
| CAUGHT: SIGQUIT | |
| CAUGHT: SIGHUP | |
| sshd: rancher [priv]: | |
| BLOCKED: SIGSYS | |
| BLOCKED: SIGPWR | |
| BLOCKED: SIGPOLL | |
| BLOCKED: SIGVTALRM | |
| BLOCKED: SIGTTOU | |
| BLOCKED: SIGTSTP | |
| BLOCKED: SIGSTOP | |
| BLOCKED: SIGCONT | |
| BLOCKED: SIGALRM | |
| BLOCKED: SIGUSR2 | |
| BLOCKED: SIGSEGV | |
| BLOCKED: SIGURS1 | |
| BLOCKED: SIGKILL | |
| BLOCKED: SIGFPE | |
| BLOCKED: SIGBUS | |
| BLOCKED: SIGABRT | |
| BLOCKED: SIGILL | |
| BLOCKED: SIGQUIT | |
| BLOCKED: SIGINT | |
| BLOCKED: SIGHUP | |
| IGNORED: SIGPIPE | |
| IGNORED: SIGHUP | |
| CAUGHT: SIGTERM | |
| CAUGHT: SIGALRM | |
| CAUGHT: SIGHUP | |
| sshd: rancher@pts/2: | |
| BLOCKED: SIGSYS | |
| BLOCKED: SIGPWR | |
| BLOCKED: SIGPOLL | |
| BLOCKED: SIGVTALRM | |
| BLOCKED: SIGTTOU | |
| BLOCKED: SIGTSTP | |
| BLOCKED: SIGSTOP | |
| BLOCKED: SIGCONT | |
| BLOCKED: SIGALRM | |
| BLOCKED: SIGUSR2 | |
| BLOCKED: SIGSEGV | |
| BLOCKED: SIGURS1 | |
| BLOCKED: SIGKILL | |
| BLOCKED: SIGFPE | |
| BLOCKED: SIGBUS | |
| BLOCKED: SIGABRT | |
| BLOCKED: SIGILL | |
| BLOCKED: SIGQUIT | |
| BLOCKED: SIGINT | |
| BLOCKED: SIGHUP | |
| IGNORED: SIGHUP | |
| CAUGHT: SIGHUP | |
| -bash: | |
| BLOCKED: SIGSYS | |
| BLOCKED: SIGPWR | |
| BLOCKED: SIGPOLL | |
| BLOCKED: SIGVTALRM | |
| BLOCKED: SIGTTOU | |
| BLOCKED: SIGTSTP | |
| BLOCKED: SIGSTOP | |
| BLOCKED: SIGCONT | |
| BLOCKED: SIGTERM | |
| BLOCKED: SIGALRM | |
| BLOCKED: SIGUSR2 | |
| BLOCKED: SIGSEGV | |
| BLOCKED: SIGURS1 | |
| BLOCKED: SIGKILL | |
| BLOCKED: SIGFPE | |
| BLOCKED: SIGBUS | |
| BLOCKED: SIGABRT | |
| BLOCKED: SIGILL | |
| BLOCKED: SIGQUIT | |
| BLOCKED: SIGINT | |
| BLOCKED: SIGHUP | |
| IGNORED: SIGTSTP | |
| IGNORED: SIGQUIT | |
| IGNORED: SIGINT | |
| IGNORED: SIGHUP | |
| CAUGHT: SIGSYS | |
| CAUGHT: SIGPWR | |
| CAUGHT: SIGIO | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGVTALRM | |
| CAUGHT: SIGXFSZ | |
| CAUGHT: SIGXCPU | |
| CAUGHT: SIGTTOU | |
| CAUGHT: SIGTTIN | |
| CAUGHT: SIGTSTP | |
| CAUGHT: SIGSTOP | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTERM | |
| CAUGHT: SIGFPE | |
| CAUGHT: SIGBUS | |
| CAUGHT: SIGABRT | |
| CAUGHT: SIGILL | |
| CAUGHT: SIGHUP | |
| ./htop-0.6.6-static: | |
| BLOCKED: SIGSYS | |
| BLOCKED: SIGPWR | |
| BLOCKED: SIGPOLL | |
| BLOCKED: SIGVTALRM | |
| BLOCKED: SIGTTOU | |
| BLOCKED: SIGTSTP | |
| BLOCKED: SIGSTOP | |
| BLOCKED: SIGCONT | |
| BLOCKED: SIGALRM | |
| BLOCKED: SIGUSR2 | |
| BLOCKED: SIGSEGV | |
| BLOCKED: SIGURS1 | |
| BLOCKED: SIGKILL | |
| BLOCKED: SIGFPE | |
| BLOCKED: SIGBUS | |
| BLOCKED: SIGABRT | |
| BLOCKED: SIGILL | |
| BLOCKED: SIGQUIT | |
| BLOCKED: SIGINT | |
| BLOCKED: SIGHUP | |
| /usr/bin/user-docker: | |
| CAUGHT: | |
| CAUGHT: SIGSYS | |
| CAUGHT: SIGPWR | |
| CAUGHT: SIGPOLL | |
| CAUGHT: SIGIO | |
| CAUGHT: SIGPROF | |
| CAUGHT: SIGVTALRM | |
| CAUGHT: SIGXFSZ | |
| CAUGHT: SIGURG | |
| CAUGHT: SIGTTOU | |
| CAUGHT: SIGTTIN | |
| CAUGHT: SIGTSTP | |
| CAUGHT: SIGSTOP | |
| CAUGHT: SIGCONT | |
| CAUGHT: SIGCHLD | |
| CAUGHT: SIGTKFLT | |
| CAUGHT: SIGURS1 | |
| CAUGHT: SIGKILL | |
| CAUGHT: SIGFPE | |
| CAUGHT: SIGBUS | |
| CAUGHT: SIGABRT | |
| CAUGHT: SIGTRAP | |
| CAUGHT: SIGILL | |
| CAUGHT: SIGQUIT | |
| CAUGHT: SIGINT | |
| CAUGHT: SIGHUP |
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| #! /bin/bash | |
| ## | |
| # usage: ./signals.sh <PID> | |
| # example: ./signals.sh $(pidof respawn) | |
| ## | |
| ## implement the hex to binary we need since no bc | |
| function h2b { | |
| decimal=`printf "%d" \0x$1` | |
| binary= | |
| while [ $decimal -ne 0 ] | |
| do | |
| bit=$(expr $decimal % 2) | |
| binary=$bit$binary | |
| decimal=$(expr $decimal / 2) | |
| done | |
| echo $binary | |
| } | |
| ## The list of signal's names | |
| SIGNALSLIST=(NOSIG SIGHUP SIGINT SIGQUIT SIGILL SIGTRAP SIGABRT SIGBUS SIGFPE SIGKILL SIGURS1 SIGSEGV SIGUSR2 SIGPIPE SIGALRM SIGTERM SIGTKFLT SIGCHLD SIGCONT SIGSTOP SIGTSTP SIGTTIN SIGTTOU SIGURG SIGXCPU SIGXFSZ SIGVTALRM SIGPROF SIGIO SIGPOLL SIGPWR SIGSYS) | |
| ## Storing the (uppercased) signals from /proc | |
| PENDINGSTATUS=`grep SigPnd "/proc/$1/status"|cut -d $'\t' -f 2|tr '[:lower:]' '[:upper:]'` | |
| BLOCKEDSTATUS=`grep SigBlk "/proc/$1/status"|cut -d $'\t' -f 2|tr '[:lower:]' '[:upper:]'` | |
| IGNOREDSTATUS=`grep SigIgn "/proc/$1/status"|cut -d $'\t' -f 2|tr '[:lower:]' '[:upper:]'` | |
| CAUGHTSTATUS=`grep SigCgt "/proc/$1/status" |cut -d $'\t' -f 2|tr '[:lower:]' '[:upper:]'` | |
| ## Storing the command name | |
| CMD=`cat /proc/$1/cmdline` | |
| ## Removing realtime signal to keep only standard signal | |
| PENDINGHEX=${PENDINGSTATUS: -8} | |
| BLOCKEDHEX=${BLOCKEDSTATUS: -8} | |
| IGNOREDHEX=${IGNOREDSTATUS: -8} | |
| CAUGHTHEX=${CAUGHTSTATUS: -8} | |
| ## From hexadecimal to bitmap | |
| PENDINGBITMAP=`h2b $PENDINGHEX` | |
| BLOCKEDBITMAP=`h2b $BLOCKEDHEX` | |
| IGNOREDBITMAP=`h2b $IGNOREDHEX` | |
| CAUGHTBITMAP=`h2b $CAUGHTHEX` | |
| echo "" | |
| echo "$CMD:" | |
| ## We go through each bitmap | |
| for bitmap in PENDINGBITMAP BLOCKEDBITMAP IGNOREDBITMAP CAUGHTBITMAP | |
| do | |
| ## We store the value of the current bitmap | |
| eval "bitmapvalue=\${$bitmap}" | |
| ## We store the lenght of the current bitmap string | |
| bitmapcursor=${#bitmapvalue} | |
| ## If the content of the bitmap is empty, we stop there. | |
| if [[ $bitmapvalue == 0 ]]; then | |
| echo "${bitmap:0:-6} is empty"; | |
| ## we skip to the next bitmap | |
| continue | |
| fi | |
| ## We loop trough each bit of the mask from the right | |
| while [ $bitmapcursor -ge 1 ] | |
| do | |
| ## The array is zero indexed, so we don't forget to -1 | |
| current_bit=${bitmapvalue:$[bitmapcursor-1]:1} | |
| if [ $current_bit == 1 ]; then | |
| echo "${bitmap:0:-6}: ${SIGNALSLIST[$bitmapcursor]}" | |
| fi | |
| bitmapcursor=$[bitmapcursor-1] | |
| done | |
| done |
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