svn commit: r327995 - head/lib/libsysdecode
Michael Tuexen
tuexen at FreeBSD.org
Mon Jan 15 10:59:06 UTC 2018
Author: tuexen
Date: Mon Jan 15 10:59:04 2018
New Revision: 327995
URL: https://svnweb.freebsd.org/changeset/base/327995
Log:
Add support for decoding the type of a cmsg.
Added:
head/lib/libsysdecode/sysdecode_cmsg_type.3 (contents, props changed)
Modified:
head/lib/libsysdecode/Makefile
head/lib/libsysdecode/flags.c
head/lib/libsysdecode/mktables
head/lib/libsysdecode/sysdecode.3
head/lib/libsysdecode/sysdecode.h
Modified: head/lib/libsysdecode/Makefile
==============================================================================
--- head/lib/libsysdecode/Makefile Mon Jan 15 08:32:49 2018 (r327994)
+++ head/lib/libsysdecode/Makefile Mon Jan 15 10:59:04 2018 (r327995)
@@ -15,6 +15,7 @@ CFLAGS+= -I${SRCTOP}/libexec/rtld-elf
MAN= sysdecode.3 \
sysdecode_abi_to_freebsd_errno.3 \
sysdecode_cap_rights.3 \
+ sysdecode_cmsg_type.3 \
sysdecode_enum.3 \
sysdecode_fcntl_arg.3 \
sysdecode_kevent.3 \
Modified: head/lib/libsysdecode/flags.c
==============================================================================
--- head/lib/libsysdecode/flags.c Mon Jan 15 08:32:49 2018 (r327994)
+++ head/lib/libsysdecode/flags.c Mon Jan 15 10:59:04 2018 (r327995)
@@ -1159,6 +1159,46 @@ sysdecode_cap_rights(FILE *fp, cap_rights_t *rightsp)
}
}
+static struct name_table cmsgtypeip[] = {
+ X(IP_RECVDSTADDR) X(IP_RECVTTL) X(IP_RECVOPTS) X(IP_RECVRETOPTS)
+ X(IP_RECVIF) X(IP_RECVTOS) X(IP_FLOWID) X(IP_FLOWTYPE)
+ X(IP_RSSBUCKETID) XEND
+};
+
+static struct name_table cmsgtypeipv6[] = {
+#if 0
+ /* The RFC 2292 defines are kernel space only. */
+ X(IPV6_2292PKTINFO) X(IPV6_2292HOPLIMIT) X(IPV6_2292HOPOPTS)
+ X(IPV6_2292DSTOPTS) X(IPV6_2292RTHDR) X(IPV6_2292NEXTHOP)
+#endif
+ X(IPV6_PKTINFO) X(IPV6_HOPLIMIT) X(IPV6_HOPOPTS)
+ X(IPV6_DSTOPTS) X(IPV6_RTHDR) X(IPV6_NEXTHOP)
+ X(IPV6_TCLASS) X(IPV6_FLOWID) X(IPV6_FLOWTYPE) X(IPV6_RSSBUCKETID)
+ X(IPV6_PATHMTU) X(IPV6_RTHDRDSTOPTS) X(IPV6_USE_MIN_MTU)
+ X(IPV6_DONTFRAG) X(IPV6_PREFER_TEMPADDR) XEND
+};
+
+static struct name_table cmsgtypesctp[] = {
+ X(SCTP_INIT) X(SCTP_SNDRCV) X(SCTP_EXTRCV) X(SCTP_SNDINFO)
+ X(SCTP_RCVINFO) X(SCTP_NXTINFO) X(SCTP_PRINFO) X(SCTP_AUTHINFO)
+ X(SCTP_DSTADDRV4) X(SCTP_DSTADDRV6) XEND
+};
+
+const char *
+sysdecode_cmsg_type(int cmsg_level, int cmsg_type)
+{
+
+ if (cmsg_level == SOL_SOCKET)
+ return (lookup_value(cmsgtypesocket, cmsg_type));
+ if (cmsg_level == IPPROTO_IP)
+ return (lookup_value(cmsgtypeip, cmsg_type));
+ if (cmsg_level == IPPROTO_IPV6)
+ return (lookup_value(cmsgtypeipv6, cmsg_type));
+ if (cmsg_level == IPPROTO_SCTP)
+ return (lookup_value(cmsgtypesctp, cmsg_type));
+ return (NULL);
+}
+
const char *
sysdecode_sctp_pr_policy(int policy)
{
Modified: head/lib/libsysdecode/mktables
==============================================================================
--- head/lib/libsysdecode/mktables Mon Jan 15 08:32:49 2018 (r327994)
+++ head/lib/libsysdecode/mktables Mon Jan 15 10:59:04 2018 (r327995)
@@ -158,6 +158,7 @@ gen_table "umtxcvwaitflags" "CVWAIT_[A-Z_]+[[:space:]]
gen_table "umtxrwlockflags" "URWLOCK_PREFER_READER[[:space:]]+0x[0-9]+" "sys/umtx.h"
gen_table "caprights" "CAP_[A-Z_]+[[:space:]]+CAPRIGHT\([0-9],[[:space:]]+0x[0-9]{16}ULL\)" "sys/capsicum.h"
gen_table "sctpprpolicy" "SCTP_PR_SCTP_[A-Z_]+[[:space:]]+0x[0-9]+" "netinet/sctp_uio.h" "SCTP_PR_SCTP_ALL"
+gen_table "cmsgtypesocket" "SCM_[A-Z_]+[[:space:]]+0x[0-9]+" "sys/socket.h"
if [ -e "${include_dir}/x86/sysarch.h" ]; then
gen_table "sysarchnum" "(AMD64|I386)_[A-Z86_]+[[:space:]]+[0-9]+" "x86/sysarch.h"
else
Modified: head/lib/libsysdecode/sysdecode.3
==============================================================================
--- head/lib/libsysdecode/sysdecode.3 Mon Jan 15 08:32:49 2018 (r327994)
+++ head/lib/libsysdecode/sysdecode.3 Mon Jan 15 10:59:04 2018 (r327995)
@@ -73,6 +73,7 @@ A placeholder for use when the ABI is not known.
.Sh SEE ALSO
.Xr sysdecode_abi_to_freebsd_errno 3 ,
.Xr sysdecode_cap_rights 3 ,
+.Xr sysdecode_cmsg_type 3 ,
.Xr sysdecode_enum 3 ,
.Xr sysdecode_fcntl_arg 3 ,
.Xr sysdecode_ioctlname 3 ,
Modified: head/lib/libsysdecode/sysdecode.h
==============================================================================
--- head/lib/libsysdecode/sysdecode.h Mon Jan 15 08:32:49 2018 (r327994)
+++ head/lib/libsysdecode/sysdecode.h Mon Jan 15 10:59:04 2018 (r327995)
@@ -46,6 +46,7 @@ const char *sysdecode_atfd(int _fd);
bool sysdecode_atflags(FILE *_fp, int _flags, int *_rem);
bool sysdecode_cap_fcntlrights(FILE *_fp, uint32_t _rights, uint32_t *_rem);
void sysdecode_cap_rights(FILE *_fp, cap_rights_t *_rightsp);
+const char *sysdecode_cmsg_type(int _cmsg_level, int _cmsg_type);
const char *sysdecode_extattrnamespace(int _namespace);
const char *sysdecode_fadvice(int _advice);
void sysdecode_fcntl_arg(FILE *_fp, int _cmd, uintptr_t _arg, int _base);
Added: head/lib/libsysdecode/sysdecode_cmsg_type.3
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/lib/libsysdecode/sysdecode_cmsg_type.3 Mon Jan 15 10:59:04 2018 (r327995)
@@ -0,0 +1,54 @@
+.\"
+.\" Copyright (c) 2018 Michael Tuexen <tuexen at FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd January 15, 2018
+.Dt sysdecode_cmsg_type 3
+.Os
+.Sh NAME
+.Nm sysdecode_cmsg_type
+.Nd lookup name of cmsg type
+.Sh LIBRARY
+.Lb libsysdecode
+.Sh SYNOPSIS
+.In sys/types.h
+.In stdbool.h
+.In sysdecode.h
+.Ft const char *
+.Fn sysdecode_cmsg_type "int cmsg_level" "int cmsg_type"
+.Sh DESCRIPTION
+The
+.Fn sysdecode_cmsg_type
+function returns a text description of the
+.Fa cmsg_type
+member of a
+.Vt struct cmsghdr .
+.Fn sysdecode_cmsg_type
+also takes the
+.Fa cmsg_level
+to uniquely identify the type.
+.Sh SEE ALSO
+.Xr sysdecode 3
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