Date: Fri, 21 Oct 2011 11:08:26 +0000 (UTC) From: Dag-Erling Smorgrav <des@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r226608 - in head/usr.bin: kdump truss Message-ID: <201110211108.p9LB8Qa0021657@svn.freebsd.org>
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Author: des Date: Fri Oct 21 11:08:25 2011 New Revision: 226608 URL: http://svn.freebsd.org/changeset/base/226608 Log: It turns out that truss also used kdump's mkioctls script, and expected ioctlname() to return a pointer to the name rather than print it. This did not show up in testing because truss had its own prototype for ioctlname(), so it would build fine and run fine as long as the program being traced did not issue an ioctl. Teach mkioctls to generate different versions of ioctlname() based on its first command-line argument. Pointed out by: Garrett Cooper <yanegomi@gmail.com> Modified: head/usr.bin/kdump/Makefile head/usr.bin/kdump/mkioctls head/usr.bin/truss/Makefile head/usr.bin/truss/extern.h Modified: head/usr.bin/kdump/Makefile ============================================================================== --- head/usr.bin/kdump/Makefile Fri Oct 21 06:41:46 2011 (r226607) +++ head/usr.bin/kdump/Makefile Fri Oct 21 11:08:25 2011 (r226608) @@ -22,7 +22,7 @@ CLEANFILES= ioctl.c kdump_subr.c kdump_s ioctl.c: mkioctls env MACHINE=${MACHINE} \ - sh ${.CURDIR}/mkioctls ${DESTDIR}/usr/include > ${.TARGET} + sh ${.CURDIR}/mkioctls print ${DESTDIR}/usr/include > ${.TARGET} kdump_subr.h: mksubr sh ${.CURDIR}/mksubr ${DESTDIR}/usr/include | \ Modified: head/usr.bin/kdump/mkioctls ============================================================================== --- head/usr.bin/kdump/mkioctls Fri Oct 21 06:41:46 2011 (r226607) +++ head/usr.bin/kdump/mkioctls Fri Oct 21 11:08:25 2011 (r226608) @@ -1,20 +1,26 @@ #!/bin/sh # # $FreeBSD$ +# +# When editing this script, keep in mind that truss also uses it. +# set -e -if [ -z "$1" ]; then - echo "usage: sh $0 include-dir" +if [ $# -ne 2 -o \( $1 != "print" -a $1 != "return" \) ]; then + echo "usage: sh $0 print|return include-dir" exit 1 fi +style="$1" +includedir="$2" + LC_ALL=C; export LC_ALL # Build a list of headers that have ioctls in them. # XXX should we use an ANSI cpp? ioctl_includes=$( - cd $1 + cd $includedir find -H -s * -name '*.h' | grep -v '.*disk.*\.h' | \ xargs egrep -l \ '^#[ ]*define[ ]+[A-Za-z_][A-Za-z0-9_]*[ ]+_IO[^a-z0-9_]' | @@ -33,7 +39,7 @@ esac awk -v x="$ioctl_includes" 'BEGIN {print x}' | gcc -E -I$1 -dM -DCOMPAT_43TTY - | - awk -v ioctl_includes="$ioctl_includes" ' + awk -v ioctl_includes="$ioctl_includes" -v style="$style" ' BEGIN { print "/* XXX obnoxious prerequisites. */" print "#define COMPAT_43" @@ -58,12 +64,19 @@ BEGIN { print "#include <stdio.h>" print "#include <cam/cam.h>" print "" - print "void ioctlname(unsigned long val, int decimal);" - print "" print ioctl_includes print "" - print "void" - print "ioctlname(unsigned long val, int decimal)" + if (style == "print") { + print "void ioctlname(unsigned long val, int decimal);" + print "" + print "void" + print "ioctlname(unsigned long val, int decimal)" + } else { + print "const char *ioctlname(unsigned long val);" + print "" + print "const char *" + print "ioctlname(unsigned long val)" + } print "{" print "\tconst char *str = NULL;" print "" @@ -77,20 +90,24 @@ BEGIN { break; ++i; # - print("\t"); + printf("\t"); if (n++ > 0) - print("else "); + printf("else "); printf("if (val == %s)\n", $i); printf("\t\tstr = \"%s\";\n", $i); } END { - print "\n" - print "\tif (str != NULL)\n" - print "\t\tprintf(\"%s\", str);\n" - print "\telse if (decimal)\n" - print "\t\tprintf(\"%lu\", val);\n" - print "\telse\n" - print "\t\tprintf(\"%#lx\", val);\n" + print "" + if (style == "print") { + print "\tif (str != NULL)" + print "\t\tprintf(\"%s\", str);" + print "\telse if (decimal)" + print "\t\tprintf(\"%lu\", val);" + print "\telse" + print "\t\tprintf(\"%#lx\", val);" + } else { + print "\treturn (str);" + } print "}" } ' Modified: head/usr.bin/truss/Makefile ============================================================================== --- head/usr.bin/truss/Makefile Fri Oct 21 06:41:46 2011 (r226607) +++ head/usr.bin/truss/Makefile Fri Oct 21 11:08:25 2011 (r226608) @@ -23,7 +23,8 @@ syscalls.h: syscalls.master ${.CURDIR}/i386.conf ioctl.c: ${.CURDIR}/../kdump/mkioctls - sh ${.CURDIR}/../kdump/mkioctls ${DESTDIR}/usr/include > ${.TARGET} + env MACHINE=${MACHINE} \ + /bin/sh ${.CURDIR}/../kdump/mkioctls return ${DESTDIR}/usr/include > ${.TARGET} .if ${MACHINE_CPUARCH} == "i386" SRCS+= i386-linux.c linux_syscalls.h Modified: head/usr.bin/truss/extern.h ============================================================================== --- head/usr.bin/truss/extern.h Fri Oct 21 06:41:46 2011 (r226607) +++ head/usr.bin/truss/extern.h Fri Oct 21 11:08:25 2011 (r226608) @@ -35,7 +35,7 @@ extern int setup_and_wait(char **); extern int start_tracing(int); extern void restore_proc(int); extern void waitevent(struct trussinfo *); -extern const char *ioctlname(register_t val); +extern const char *ioctlname(unsigned long val); extern char *strsig(int sig); #ifdef __amd64__ extern void amd64_syscall_entry(struct trussinfo *, int);
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