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Start bitcoind in a screen in a debugger
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| set disable-randomization off | |
| set $_exitcode = -999 | |
| set height 0 | |
| handle SIGTERM nostop print pass | |
| handle SIGPIPE nostop | |
| define hook-stop | |
| if $_exitcode != -999 | |
| quit | |
| else | |
| shell echo | mail -s "NOTICE: app has stopped on unhandled signal" root | |
| end | |
| end | |
| echo .gdbinit: running app\n | |
| run |
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| #!/bin/bash | |
| # Start bitcoind in a screen in a debugger | |
| # This works like -daemon, except that it is possible to jump into the debugger at any time | |
| # by attaching to the screen (screen -r). On a crash the debugger will keep running, | |
| # on a normal exit it will quit automatically. | |
| screen -d -m gdb -x run.gdbscript -args ./bitcoind -datadir=/usb/bitcoin |
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Important: don't forget
set disable-randomization offin the gdb script. By default, GDB disables ASLR, which reduces hardening against various forms of exploitation. This is not a good idea for network software such as bitcoin core, so be sure to turn off that "feature".