(munlock): Ditto. (posix_madvise): Ditto. * signal.cc: Remove obsolete sigcatchers stuff throughout. (sigaction_worker): Add function name parameter and use it to show standard syscall return value debugging output. Also add fault protection. (sigaction): Accommodate extra argument to sigaction_worker. (siginterrupt): Ditto. * syscalls.cc (read): Remove obsolete sigcatchers stuff. (readv): Ditto.
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