freebsd-dev/lib/libsysdecode/mkioctls
John Baldwin 265e58989d Move the mkioctls script to libsysdecode and use it to generate a
sysdecode_ioctlname() function.  This function matches the behavior
of the truss variant in that it returns a pointer to a string description
for known ioctls.  The caller is responsible for displaying unknown
ioctl requests.  For kdump this meant moving the logic to handle unknown
ioctl requests out of the generated function and into an ioctlname()
function in kdump.c instead.

Differential Revision:	https://reviews.freebsd.org/D4610
2015-12-22 20:33:49 +00:00

98 lines
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#!/bin/sh
#
# $FreeBSD$
set -e
if [ $# -ne 1 ]; then
echo "usage: sh $0 include-dir"
exit 1
fi
includedir="$1"
LC_ALL=C; export LC_ALL
# Build a list of headers that have ioctls in them.
# XXX should we use an ANSI cpp?
ioctl_includes=$(
cd $includedir
find -H -s * -name '*.h' | \
egrep -v '(.*disk.*|net/pfvar|net/if_pfsync)\.h' | \
xargs egrep -l \
'^#[ ]*define[ ]+[A-Za-z_][A-Za-z0-9_]*[ ]+_IO[^a-z0-9_]' |
awk '{printf("#include <%s>\\n", $1)}'
)
: ${MACHINE=$(uname -m)}
case "${MACHINE}" in
*pc98*)
ioctl_includes="$ioctl_includes#include <sys/diskpc98.h>\\n"
;;
*)
ioctl_includes="$ioctl_includes#include <sys/diskmbr.h>\\n"
;;
esac
awk -v x="$ioctl_includes" 'BEGIN {print x}' |
$CPP -nostdinc -I$includedir -dM -DCOMPAT_43TTY - |
awk -v ioctl_includes="$ioctl_includes" '
BEGIN {
print "/* XXX obnoxious prerequisites. */"
print "#define COMPAT_43"
print "#define COMPAT_43TTY"
print "#include <sys/param.h>"
print "#include <sys/devicestat.h>"
print "#include <sys/disklabel.h>"
print "#include <sys/socket.h>"
print "#include <sys/time.h>"
print "#include <sys/tty.h>"
print "#include <bsm/audit.h>"
print "#include <net/ethernet.h>"
print "#include <net/if.h>"
print "#ifdef PF"
print "#include <net/pfvar.h>"
print "#include <net/if_pfsync.h>"
print "#endif"
print "#include <net/route.h>"
print "#include <netinet/in.h>"
print "#include <netinet/ip_mroute.h>"
print "#include <netinet6/in6_var.h>"
print "#include <netinet6/nd6.h>"
print "#include <netinet6/ip6_mroute.h>"
print "#include <stdio.h>"
print "#include <cam/cam.h>"
print "#include <stddef.h>"
print "#include <stdint.h>"
print "#include <sysdecode.h>"
print ""
print ioctl_includes
print ""
print "const char *"
print "sysdecode_ioctlname(unsigned long val)"
print "{"
print "\tconst char *str = NULL;"
print ""
}
/^#[ ]*define[ ]+[A-Za-z_][A-Za-z0-9_]*[ ]+_IO/ {
# find where the name starts
for (i = 1; i <= NF; i++)
if ($i ~ /define/)
break;
++i;
#
printf("\t");
if (n++ > 0)
printf("else ");
printf("if (val == %s)\n", $i);
printf("\t\tstr = \"%s\";\n", $i);
}
END {
print ""
print "\treturn (str);"
print "}"
}
'