CVS commit: src/usr.bin/netstat

["David A. Holland" <dholland%netbsd.org@localhost>]

Module Name:    src
Committed By:   dholland
Date:           Thu Nov 24 00:05:13 UTC 2016

Modified Files:
        src/usr.bin/netstat: if.c

Log Message:
Fix "sidewaysintpr", the thing that prints interface statistics in a
loop, to use signals properly. There are two copies of this code; one
uses kvm and the other uses sysctls. One copy had been updated to use
sigset_t and sigsuspend; the other was using vintage sigpause(). Sync
up the code so both use sigpause. Also, use sig_atomic_t, and block
SIGALRM when not waiting for it to avoid a small and unlikely but real
race.

Since the non-modernized copy of the code *had* for some been
modernized to use setitimer instead of just alarm(), propagate that
change to the other copy.

These copies could share more logic than they do.


To generate a diff of this commit:
cvs rdiff -u -r1.89 -r1.90 src/usr.bin/netstat/if.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.