Allow usage of signal names #208
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- Adds a mapping of signal numbers to signal names based on the "most common" (subjective) signals. - This allows the same config/script to be used on different platforms, for example: -r TERM:QUIT (15:3 on Linux vs. 25:20 on OS X). - Each entry is wrapped in a #ifdef SIG<NAME>/#endif pair in an attempt to make this implementation as portable as possible. - Names can be specified with or without the SIG prefix, and numbers and names can be used in any combination: -r 15:3, -r TERM:QUIT, -r SIGTERM:3, -r TERM:SIGQUIT, etc. - Corresponding signum_to_signame() and signame_to_signum() functions were added. - A new -l/--list option shows the mapping in use on the current system/platform/OS. - Debug output has been updated to include the signal name along with the number. Fixes Yelp#87.
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-r TERM:QUIT(15:3on Linux vs.25:20on OS X).#ifdef SIG<NAME>/#endifpair in an attempt to make this implementation as portable as possible.SIGprefix, and numbers and names can be used in any combination:-r 15:3,-r TERM:QUIT,-r SIGTERM:3,-r TERM:SIGQUIT, etc.signum_to_signame()andsigname_to_signum()functions were added.-l/--listoption shows the mapping in use on the current system/platform/OS.Fixes #87.
The build of the signal map is a bit lanky in dumb-init.c due to all of the
#ifdef/#endif. It may be worth moving it into a separate file and usingexterns and#includes, but I kept everything together for this first stab at it.