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92e17803cd
freebsd-dev/usr.bin/truss/syscalls.c
Ryan Moeller 92e17803cd Enable iterating all sysctls, even ones with CTLFLAG_SKIP 
Add an "nextnoskip" sysctl that allows for listing of sysctls intended to be
normally skipped for cost reasons.

This makes it so the names/descriptions of those sysctls can be discovered with
sysctl -aN/sysctl -ad/sysctl -at.

It also makes it so children are visited when a node flagged with CTLFLAG_SKIP
is explicitly requested.

The intended use case is to mark the root "kstat" node with CTLFLAG_SKIP so that
the extensive and expensive stats are skipped by default but may still be easily
obtained without having to know them all (which may not even be possible) and
request each one-by-one.

Reviewed by:	jhb
MFC after:	2 weeks
Relnotes:	yes
Sponsored by:	iXsystems, Inc.
Differential Revision:	https://reviews.freebsd.org/D26560
2020-10-05 20:13:22 +00:00

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/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright 1997 Sean Eric Fagan
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Sean Eric Fagan
* 4. Neither the name of the author may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* This file has routines used to print out system calls and their
* arguments.
*/
#include <sys/capsicum.h>
#include <sys/types.h>
#define _WANT_FREEBSD11_KEVENT
#include <sys/event.h>
#include <sys/ioccom.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/ptrace.h>
#include <sys/resource.h>
#include <sys/socket.h>
#define _WANT_FREEBSD11_STAT
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <netinet/sctp.h>
#include <arpa/inet.h>
#include <assert.h>
#include <ctype.h>
#include <err.h>
#define _WANT_KERNEL_ERRNO
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <sched.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysdecode.h>
#include <unistd.h>
#include <vis.h>
#include <contrib/cloudabi/cloudabi_types_common.h>
#include "truss.h"
#include "extern.h"
#include "syscall.h"
/*
* This should probably be in its own file, sorted alphabetically.
*/
static struct syscall decoded_syscalls[] = {
/* Native ABI */
{ .name = "__acl_aclcheck_fd", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__acl_aclcheck_file", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__acl_aclcheck_link", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__acl_delete_fd", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Acltype, 1 } } },
{ .name = "__acl_delete_file", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Acltype, 1 } } },
{ .name = "__acl_delete_link", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Acltype, 1 } } },
{ .name = "__acl_get_fd", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__acl_get_file", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__acl_get_link", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__acl_set_fd", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__acl_set_file", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__acl_set_link", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Acltype, 1 }, { Ptr, 2 } } },
{ .name = "__cap_rights_get", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { CapRights | OUT, 2 } } },
{ .name = "__getcwd", .ret_type = 1, .nargs = 2,
.args = { { Name | OUT, 0 }, { Int, 1 } } },
{ .name = "__realpathat", .ret_type = 1, .nargs = 5,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { Name | OUT, 2 },
{ Sizet, 3 }, { Int, 4} } },
{ .name = "_umtx_op", .ret_type = 1, .nargs = 5,
.args = { { Ptr, 0 }, { Umtxop, 1 }, { LongHex, 2 }, { Ptr, 3 },
{ Ptr, 4 } } },
{ .name = "accept", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Sockaddr | OUT, 1 }, { Ptr | OUT, 2 } } },
{ .name = "access", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Accessmode, 1 } } },
{ .name = "bind", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Socklent, 2 } } },
{ .name = "bindat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Int, 1 }, { Sockaddr | IN, 2 },
{ Int, 3 } } },
{ .name = "break", .ret_type = 1, .nargs = 1,
.args = { { Ptr, 0 } } },
{ .name = "cap_fcntls_get", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CapFcntlRights | OUT, 1 } } },
{ .name = "cap_fcntls_limit", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CapFcntlRights, 1 } } },
{ .name = "cap_getmode", .ret_type = 1, .nargs = 1,
.args = { { PUInt | OUT, 0 } } },
{ .name = "cap_rights_limit", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CapRights, 1 } } },
{ .name = "chdir", .ret_type = 1, .nargs = 1,
.args = { { Name, 0 } } },
{ .name = "chflags", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { FileFlags, 1 } } },
{ .name = "chflagsat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { FileFlags, 2 },
{ Atflags, 3 } } },
{ .name = "chmod", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Octal, 1 } } },
{ .name = "chown", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Int, 1 }, { Int, 2 } } },
{ .name = "chroot", .ret_type = 1, .nargs = 1,
.args = { { Name, 0 } } },
{ .name = "clock_gettime", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Timespec | OUT, 1 } } },
{ .name = "close", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "closefrom", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "compat11.fstat", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Stat11 | OUT, 1 } } },
{ .name = "compat11.fstatat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { Stat11 | OUT, 2 },
{ Atflags, 3 } } },
{ .name = "compat11.kevent", .ret_type = 1, .nargs = 6,
.args = { { Int, 0 }, { Kevent11, 1 }, { Int, 2 },
{ Kevent11 | OUT, 3 }, { Int, 4 }, { Timespec, 5 } } },
{ .name = "compat11.lstat", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Stat11 | OUT, 1 } } },
{ .name = "compat11.stat", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Stat11 | OUT, 1 } } },
{ .name = "connect", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Socklent, 2 } } },
{ .name = "connectat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Int, 1 }, { Sockaddr | IN, 2 },
{ Int, 3 } } },
{ .name = "dup", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "dup2", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Int, 1 } } },
{ .name = "eaccess", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Accessmode, 1 } } },
{ .name = "execve", .ret_type = 1, .nargs = 3,
.args = { { Name | IN, 0 }, { ExecArgs | IN, 1 },
{ ExecEnv | IN, 2 } } },
{ .name = "exit", .ret_type = 0, .nargs = 1,
.args = { { Hex, 0 } } },
{ .name = "extattr_delete_fd", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Extattrnamespace, 1 }, { Name, 2 } } },
{ .name = "extattr_delete_file", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Extattrnamespace, 1 }, { Name, 2 } } },
{ .name = "extattr_delete_link", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Extattrnamespace, 1 }, { Name, 2 } } },
{ .name = "extattr_get_fd", .ret_type = 1, .nargs = 5,
.args = { { Int, 0 }, { Extattrnamespace, 1 }, { Name, 2 },
{ BinString | OUT, 3 }, { Sizet, 4 } } },
{ .name = "extattr_get_file", .ret_type = 1, .nargs = 5,
.args = { { Name, 0 }, { Extattrnamespace, 1 }, { Name, 2 },
{ BinString | OUT, 3 }, { Sizet, 4 } } },
{ .name = "extattr_get_link", .ret_type = 1, .nargs = 5,
.args = { { Name, 0 }, { Extattrnamespace, 1 }, { Name, 2 },
{ BinString | OUT, 3 }, { Sizet, 4 } } },
{ .name = "extattr_list_fd", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { Extattrnamespace, 1 }, { BinString | OUT, 2 },
{ Sizet, 3 } } },
{ .name = "extattr_list_file", .ret_type = 1, .nargs = 4,
.args = { { Name, 0 }, { Extattrnamespace, 1 }, { BinString | OUT, 2 },
{ Sizet, 3 } } },
{ .name = "extattr_list_link", .ret_type = 1, .nargs = 4,
.args = { { Name, 0 }, { Extattrnamespace, 1 }, { BinString | OUT, 2 },
{ Sizet, 3 } } },
{ .name = "extattr_set_fd", .ret_type = 1, .nargs = 5,
.args = { { Int, 0 }, { Extattrnamespace, 1 }, { Name, 2 },
{ BinString | IN, 3 }, { Sizet, 4 } } },
{ .name = "extattr_set_file", .ret_type = 1, .nargs = 5,
.args = { { Name, 0 }, { Extattrnamespace, 1 }, { Name, 2 },
{ BinString | IN, 3 }, { Sizet, 4 } } },
{ .name = "extattr_set_link", .ret_type = 1, .nargs = 5,
.args = { { Name, 0 }, { Extattrnamespace, 1 }, { Name, 2 },
{ BinString | IN, 3 }, { Sizet, 4 } } },
{ .name = "extattrctl", .ret_type = 1, .nargs = 5,
.args = { { Name, 0 }, { Hex, 1 }, { Name, 2 },
{ Extattrnamespace, 3 }, { Name, 4 } } },
{ .name = "faccessat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { Accessmode, 2 },
{ Atflags, 3 } } },
{ .name = "fchflags", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { FileFlags, 1 } } },
{ .name = "fchmod", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Octal, 1 } } },
{ .name = "fchmodat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name, 1 }, { Octal, 2 }, { Atflags, 3 } } },
{ .name = "fchown", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { Int, 2 } } },
{ .name = "fchownat", .ret_type = 1, .nargs = 5,
.args = { { Atfd, 0 }, { Name, 1 }, { Int, 2 }, { Int, 3 },
{ Atflags, 4 } } },
{ .name = "fcntl", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Fcntl, 1 }, { Fcntlflag, 2 } } },
{ .name = "fdatasync", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "flock", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Flockop, 1 } } },
{ .name = "fstat", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Stat | OUT, 1 } } },
{ .name = "fstatat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { Stat | OUT, 2 },
{ Atflags, 3 } } },
{ .name = "fstatfs", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { StatFs | OUT, 1 } } },
{ .name = "fsync", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "ftruncate", .ret_type = 1, .nargs = 2,
.args = { { Int | IN, 0 }, { QuadHex | IN, 1 } } },
{ .name = "futimens", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Timespec2 | IN, 1 } } },
{ .name = "futimes", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Timeval2 | IN, 1 } } },
{ .name = "futimesat", .ret_type = 1, .nargs = 3,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { Timeval2 | IN, 2 } } },
{ .name = "getdirentries", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { BinString | OUT, 1 }, { Int, 2 },
{ PQuadHex | OUT, 3 } } },
{ .name = "getfsstat", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Long, 1 }, { Getfsstatmode, 2 } } },
{ .name = "getitimer", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Itimerval | OUT, 2 } } },
{ .name = "getpeername", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Sockaddr | OUT, 1 }, { Ptr | OUT, 2 } } },
{ .name = "getpgid", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "getpriority", .ret_type = 1, .nargs = 2,
.args = { { Priowhich, 0 }, { Int, 1 } } },
{ .name = "getrandom", .ret_type = 1, .nargs = 3,
.args = { { BinString | OUT, 0 }, { Sizet, 1 }, { UInt, 2 } } },
{ .name = "getrlimit", .ret_type = 1, .nargs = 2,
.args = { { Resource, 0 }, { Rlimit | OUT, 1 } } },
{ .name = "getrusage", .ret_type = 1, .nargs = 2,
.args = { { RusageWho, 0 }, { Rusage | OUT, 1 } } },
{ .name = "getsid", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "getsockname", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Sockaddr | OUT, 1 }, { Ptr | OUT, 2 } } },
{ .name = "getsockopt", .ret_type = 1, .nargs = 5,
.args = { { Int, 0 }, { Sockoptlevel, 1 }, { Sockoptname, 2 },
{ Ptr | OUT, 3 }, { Ptr | OUT, 4 } } },
{ .name = "gettimeofday", .ret_type = 1, .nargs = 2,
.args = { { Timeval | OUT, 0 }, { Ptr, 1 } } },
{ .name = "ioctl", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Ioctl, 1 }, { Ptr, 2 } } },
{ .name = "kevent", .ret_type = 1, .nargs = 6,
.args = { { Int, 0 }, { Kevent, 1 }, { Int, 2 }, { Kevent | OUT, 3 },
{ Int, 4 }, { Timespec, 5 } } },
{ .name = "kill", .ret_type = 1, .nargs = 2,
.args = { { Int | IN, 0 }, { Signal | IN, 1 } } },
{ .name = "kldfind", .ret_type = 1, .nargs = 1,
.args = { { Name | IN, 0 } } },
{ .name = "kldfirstmod", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "kldload", .ret_type = 1, .nargs = 1,
.args = { { Name | IN, 0 } } },
{ .name = "kldnext", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "kldstat", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Ptr, 1 } } },
{ .name = "kldsym", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Kldsymcmd, 1 }, { Ptr, 2 } } },
{ .name = "kldunload", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "kldunloadf", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Kldunloadflags, 1 } } },
{ .name = "kse_release", .ret_type = 0, .nargs = 1,
.args = { { Timespec, 0 } } },
{ .name = "lchflags", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { FileFlags, 1 } } },
{ .name = "lchmod", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Octal, 1 } } },
{ .name = "lchown", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Int, 1 }, { Int, 2 } } },
{ .name = "link", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Name, 1 } } },
{ .name = "linkat", .ret_type = 1, .nargs = 5,
.args = { { Atfd, 0 }, { Name, 1 }, { Atfd, 2 }, { Name, 3 },
{ Atflags, 4 } } },
{ .name = "listen", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Int, 1 } } },
{ .name = "lseek", .ret_type = 2, .nargs = 3,
.args = { { Int, 0 }, { QuadHex, 1 }, { Whence, 2 } } },
{ .name = "lstat", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Stat | OUT, 1 } } },
{ .name = "lutimes", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Timeval2 | IN, 1 } } },
{ .name = "madvise", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Sizet, 1 }, { Madvice, 2 } } },
{ .name = "minherit", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Sizet, 1 }, { Minherit, 2 } } },
{ .name = "mkdir", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Octal, 1 } } },
{ .name = "mkdirat", .ret_type = 1, .nargs = 3,
.args = { { Atfd, 0 }, { Name, 1 }, { Octal, 2 } } },
{ .name = "mkfifo", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Octal, 1 } } },
{ .name = "mkfifoat", .ret_type = 1, .nargs = 3,
.args = { { Atfd, 0 }, { Name, 1 }, { Octal, 2 } } },
{ .name = "mknod", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Octal, 1 }, { Int, 2 } } },
{ .name = "mknodat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name, 1 }, { Octal, 2 }, { Int, 3 } } },
{ .name = "mlock", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Sizet, 1 } } },
{ .name = "mlockall", .ret_type = 1, .nargs = 1,
.args = { { Mlockall, 0 } } },
{ .name = "mmap", .ret_type = 1, .nargs = 6,
.args = { { Ptr, 0 }, { Sizet, 1 }, { Mprot, 2 }, { Mmapflags, 3 },
{ Int, 4 }, { QuadHex, 5 } } },
{ .name = "modfind", .ret_type = 1, .nargs = 1,
.args = { { Name | IN, 0 } } },
{ .name = "mount", .ret_type = 1, .nargs = 4,
.args = { { Name, 0 }, { Name, 1 }, { Mountflags, 2 }, { Ptr, 3 } } },
{ .name = "mprotect", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Sizet, 1 }, { Mprot, 2 } } },
{ .name = "msync", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Sizet, 1 }, { Msync, 2 } } },
{ .name = "munlock", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Sizet, 1 } } },
{ .name = "munmap", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Sizet, 1 } } },
{ .name = "nanosleep", .ret_type = 1, .nargs = 1,
.args = { { Timespec, 0 } } },
{ .name = "nmount", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { UInt, 1 }, { Mountflags, 2 } } },
{ .name = "open", .ret_type = 1, .nargs = 3,
.args = { { Name | IN, 0 }, { Open, 1 }, { Octal, 2 } } },
{ .name = "openat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { Open, 2 },
{ Octal, 3 } } },
{ .name = "pathconf", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Pathconf, 1 } } },
{ .name = "pipe", .ret_type = 1, .nargs = 1,
.args = { { PipeFds | OUT, 0 } } },
{ .name = "pipe2", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Pipe2, 1 } } },
{ .name = "poll", .ret_type = 1, .nargs = 3,
.args = { { Pollfd, 0 }, { Int, 1 }, { Int, 2 } } },
{ .name = "posix_fadvise", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { QuadHex, 1 }, { QuadHex, 2 },
{ Fadvice, 3 } } },
{ .name = "posix_openpt", .ret_type = 1, .nargs = 1,
.args = { { Open, 0 } } },
{ .name = "pread", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { BinString | OUT, 1 }, { Sizet, 2 },
{ QuadHex, 3 } } },
{ .name = "procctl", .ret_type = 1, .nargs = 4,
.args = { { Idtype, 0 }, { Quad, 1 }, { Procctl, 2 }, { Ptr, 3 } } },
{ .name = "ptrace", .ret_type = 1, .nargs = 4,
.args = { { Ptraceop, 0 }, { Int, 1 }, { Ptr, 2 }, { Int, 3 } } },
{ .name = "pwrite", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { BinString | IN, 1 }, { Sizet, 2 },
{ QuadHex, 3 } } },
{ .name = "quotactl", .ret_type = 1, .nargs = 4,
.args = { { Name, 0 }, { Quotactlcmd, 1 }, { Int, 2 }, { Ptr, 3 } } },
{ .name = "read", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { BinString | OUT, 1 }, { Sizet, 2 } } },
{ .name = "readlink", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Readlinkres | OUT, 1 }, { Sizet, 2 } } },
{ .name = "readlinkat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name, 1 }, { Readlinkres | OUT, 2 },
{ Sizet, 3 } } },
{ .name = "readv", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Iovec | OUT, 1 }, { Int, 2 } } },
{ .name = "reboot", .ret_type = 1, .nargs = 1,
.args = { { Reboothowto, 0 } } },
{ .name = "recvfrom", .ret_type = 1, .nargs = 6,
.args = { { Int, 0 }, { BinString | OUT, 1 }, { Sizet, 2 },
{ Msgflags, 3 }, { Sockaddr | OUT, 4 },
{ Ptr | OUT, 5 } } },
{ .name = "recvmsg", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Msghdr | OUT, 1 }, { Msgflags, 2 } } },
{ .name = "rename", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Name, 1 } } },
{ .name = "renameat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name, 1 }, { Atfd, 2 }, { Name, 3 } } },
{ .name = "rfork", .ret_type = 1, .nargs = 1,
.args = { { Rforkflags, 0 } } },
{ .name = "rmdir", .ret_type = 1, .nargs = 1,
.args = { { Name, 0 } } },
{ .name = "rtprio", .ret_type = 1, .nargs = 3,
.args = { { Rtpriofunc, 0 }, { Int, 1 }, { Ptr, 2 } } },
{ .name = "rtprio_thread", .ret_type = 1, .nargs = 3,
.args = { { Rtpriofunc, 0 }, { Int, 1 }, { Ptr, 2 } } },
{ .name = "sched_get_priority_max", .ret_type = 1, .nargs = 1,
.args = { { Schedpolicy, 0 } } },
{ .name = "sched_get_priority_min", .ret_type = 1, .nargs = 1,
.args = { { Schedpolicy, 0 } } },
{ .name = "sched_getparam", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Schedparam | OUT, 1 } } },
{ .name = "sched_getscheduler", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "sched_rr_get_interval", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Timespec | OUT, 1 } } },
{ .name = "sched_setparam", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Schedparam, 1 } } },
{ .name = "sched_setscheduler", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Schedpolicy, 1 }, { Schedparam, 2 } } },
{ .name = "sctp_generic_recvmsg", .ret_type = 1, .nargs = 7,
.args = { { Int, 0 }, { Iovec | OUT, 1 }, { Int, 2 },
{ Sockaddr | OUT, 3 }, { Ptr | OUT, 4 },
{ Sctpsndrcvinfo | OUT, 5 }, { Ptr | OUT, 6 } } },
{ .name = "sctp_generic_sendmsg", .ret_type = 1, .nargs = 7,
.args = { { Int, 0 }, { BinString | IN, 1 }, { Int, 2 },
{ Sockaddr | IN, 3 }, { Socklent, 4 },
{ Sctpsndrcvinfo | IN, 5 }, { Msgflags, 6 } } },
{ .name = "sctp_generic_sendmsg_iov", .ret_type = 1, .nargs = 7,
.args = { { Int, 0 }, { Iovec | IN, 1 }, { Int, 2 },
{ Sockaddr | IN, 3 }, { Socklent, 4 },
{ Sctpsndrcvinfo | IN, 5 }, { Msgflags, 6 } } },
{ .name = "select", .ret_type = 1, .nargs = 5,
.args = { { Int, 0 }, { Fd_set, 1 }, { Fd_set, 2 }, { Fd_set, 3 },
{ Timeval, 4 } } },
{ .name = "sendmsg", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Msghdr | IN, 1 }, { Msgflags, 2 } } },
{ .name = "sendto", .ret_type = 1, .nargs = 6,
.args = { { Int, 0 }, { BinString | IN, 1 }, { Sizet, 2 },
{ Msgflags, 3 }, { Sockaddr | IN, 4 },
{ Socklent | IN, 5 } } },
{ .name = "setitimer", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Itimerval, 1 }, { Itimerval | OUT, 2 } } },
{ .name = "setpriority", .ret_type = 1, .nargs = 3,
.args = { { Priowhich, 0 }, { Int, 1 }, { Int, 2 } } },
{ .name = "setrlimit", .ret_type = 1, .nargs = 2,
.args = { { Resource, 0 }, { Rlimit | IN, 1 } } },
{ .name = "setsockopt", .ret_type = 1, .nargs = 5,
.args = { { Int, 0 }, { Sockoptlevel, 1 }, { Sockoptname, 2 },
{ Ptr | IN, 3 }, { Socklent, 4 } } },
{ .name = "shm_open", .ret_type = 1, .nargs = 3,
.args = { { ShmName | IN, 0 }, { Open, 1 }, { Octal, 2 } } },
{ .name = "shm_open2", .ret_type = 1, .nargs = 5,
.args = { { ShmName | IN, 0 }, { Open, 1 }, { Octal, 2 },
{ ShmFlags, 3 }, { Name | IN, 4 } } },
{ .name = "shm_rename", .ret_type = 1, .nargs = 3,
.args = { { Name | IN, 0 }, { Name | IN, 1 }, { Hex, 2 } } },
{ .name = "shm_unlink", .ret_type = 1, .nargs = 1,
.args = { { Name | IN, 0 } } },
{ .name = "shutdown", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Shutdown, 1 } } },
{ .name = "sigaction", .ret_type = 1, .nargs = 3,
.args = { { Signal, 0 }, { Sigaction | IN, 1 },
{ Sigaction | OUT, 2 } } },
{ .name = "sigpending", .ret_type = 1, .nargs = 1,
.args = { { Sigset | OUT, 0 } } },
{ .name = "sigprocmask", .ret_type = 1, .nargs = 3,
.args = { { Sigprocmask, 0 }, { Sigset, 1 }, { Sigset | OUT, 2 } } },
{ .name = "sigqueue", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Signal, 1 }, { LongHex, 2 } } },
{ .name = "sigreturn", .ret_type = 1, .nargs = 1,
.args = { { Ptr, 0 } } },
{ .name = "sigsuspend", .ret_type = 1, .nargs = 1,
.args = { { Sigset | IN, 0 } } },
{ .name = "sigtimedwait", .ret_type = 1, .nargs = 3,
.args = { { Sigset | IN, 0 }, { Siginfo | OUT, 1 },
{ Timespec | IN, 2 } } },
{ .name = "sigwait", .ret_type = 1, .nargs = 2,
.args = { { Sigset | IN, 0 }, { PSig | OUT, 1 } } },
{ .name = "sigwaitinfo", .ret_type = 1, .nargs = 2,
.args = { { Sigset | IN, 0 }, { Siginfo | OUT, 1 } } },
{ .name = "socket", .ret_type = 1, .nargs = 3,
.args = { { Sockdomain, 0 }, { Socktype, 1 }, { Sockprotocol, 2 } } },
{ .name = "stat", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Stat | OUT, 1 } } },
{ .name = "statfs", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { StatFs | OUT, 1 } } },
{ .name = "symlink", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Name, 1 } } },
{ .name = "symlinkat", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Atfd, 1 }, { Name, 2 } } },
{ .name = "sysarch", .ret_type = 1, .nargs = 2,
.args = { { Sysarch, 0 }, { Ptr, 1 } } },
{ .name = "__sysctl", .ret_type = 1, .nargs = 6,
.args = { { Sysctl, 0 }, { Sizet, 1 }, { Ptr, 2 }, { Ptr, 3 },
{ Ptr, 4 }, { Sizet, 5 } } },
{ .name = "__sysctlbyname", .ret_type = 1, .nargs = 6,
.args = { { Name, 0 }, { Sizet, 1 }, { Ptr, 2 }, { Ptr, 3 },
{ Ptr, 4}, { Sizet, 5 } } },
{ .name = "thr_kill", .ret_type = 1, .nargs = 2,
.args = { { Long, 0 }, { Signal, 1 } } },
{ .name = "thr_self", .ret_type = 1, .nargs = 1,
.args = { { Ptr, 0 } } },
{ .name = "thr_set_name", .ret_type = 1, .nargs = 2,
.args = { { Long, 0 }, { Name, 1 } } },
{ .name = "truncate", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { QuadHex | IN, 1 } } },
#if 0
/* Does not exist */
{ .name = "umount", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Int, 2 } } },
#endif
{ .name = "unlink", .ret_type = 1, .nargs = 1,
.args = { { Name, 0 } } },
{ .name = "unlinkat", .ret_type = 1, .nargs = 3,
.args = { { Atfd, 0 }, { Name, 1 }, { Atflags, 2 } } },
{ .name = "unmount", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Mountflags, 1 } } },
{ .name = "utimensat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { Timespec2 | IN, 2 },
{ Atflags, 3 } } },
{ .name = "utimes", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Timeval2 | IN, 1 } } },
{ .name = "utrace", .ret_type = 1, .nargs = 1,
.args = { { Utrace, 0 } } },
{ .name = "wait4", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { ExitStatus | OUT, 1 }, { Waitoptions, 2 },
{ Rusage | OUT, 3 } } },
{ .name = "wait6", .ret_type = 1, .nargs = 6,
.args = { { Idtype, 0 }, { Quad, 1 }, { ExitStatus | OUT, 2 },
{ Waitoptions, 3 }, { Rusage | OUT, 4 },
{ Siginfo | OUT, 5 } } },
{ .name = "write", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { BinString | IN, 1 }, { Sizet, 2 } } },
{ .name = "writev", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Iovec | IN, 1 }, { Int, 2 } } },
/* Linux ABI */
{ .name = "linux_access", .ret_type = 1, .nargs = 2,
.args = { { Name, 0 }, { Accessmode, 1 } } },
{ .name = "linux_execve", .ret_type = 1, .nargs = 3,
.args = { { Name | IN, 0 }, { ExecArgs | IN, 1 },
{ ExecEnv | IN, 2 } } },
{ .name = "linux_lseek", .ret_type = 2, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { Whence, 2 } } },
{ .name = "linux_mkdir", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Int, 1 } } },
{ .name = "linux_newfstat", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Ptr | OUT, 1 } } },
{ .name = "linux_newstat", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Ptr | OUT, 1 } } },
{ .name = "linux_open", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Hex, 1 }, { Octal, 2 } } },
{ .name = "linux_readlink", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Name | OUT, 1 }, { Sizet, 2 } } },
{ .name = "linux_socketcall", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { LinuxSockArgs, 1 } } },
{ .name = "linux_stat64", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Ptr | OUT, 1 } } },
/* CloudABI system calls. */
{ .name = "cloudabi_sys_clock_res_get", .ret_type = 1, .nargs = 1,
.args = { { CloudABIClockID, 0 } } },
{ .name = "cloudabi_sys_clock_time_get", .ret_type = 1, .nargs = 2,
.args = { { CloudABIClockID, 0 }, { CloudABITimestamp, 1 } } },
{ .name = "cloudabi_sys_condvar_signal", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { CloudABIMFlags, 1 }, { UInt, 2 } } },
{ .name = "cloudabi_sys_fd_close", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "cloudabi_sys_fd_create1", .ret_type = 1, .nargs = 1,
.args = { { CloudABIFileType, 0 } } },
{ .name = "cloudabi_sys_fd_create2", .ret_type = 1, .nargs = 2,
.args = { { CloudABIFileType, 0 }, { PipeFds | OUT, 0 } } },
{ .name = "cloudabi_sys_fd_datasync", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "cloudabi_sys_fd_dup", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "cloudabi_sys_fd_replace", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Int, 1 } } },
{ .name = "cloudabi_sys_fd_seek", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { CloudABIWhence, 2 } } },
{ .name = "cloudabi_sys_fd_stat_get", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CloudABIFDStat | OUT, 1 } } },
{ .name = "cloudabi_sys_fd_stat_put", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { CloudABIFDStat | IN, 1 },
{ CloudABIFDSFlags, 2 } } },
{ .name = "cloudabi_sys_fd_sync", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "cloudabi_sys_file_advise", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { Int, 1 }, { Int, 2 },
{ CloudABIAdvice, 3 } } },
{ .name = "cloudabi_sys_file_allocate", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { Int, 2 } } },
{ .name = "cloudabi_sys_file_create", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { BinString | IN, 1 },
{ CloudABIFileType, 3 } } },
{ .name = "cloudabi_sys_file_link", .ret_type = 1, .nargs = 4,
.args = { { CloudABILookup, 0 }, { BinString | IN, 1 },
{ Int, 3 }, { BinString | IN, 4 } } },
{ .name = "cloudabi_sys_file_open", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { BinString | IN, 1 },
{ CloudABIOFlags, 3 }, { CloudABIFDStat | IN, 4 } } },
{ .name = "cloudabi_sys_file_readdir", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { BinString | OUT, 1 }, { Int, 2 },
{ Int, 3 } } },
{ .name = "cloudabi_sys_file_readlink", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { BinString | IN, 1 },
{ BinString | OUT, 3 }, { Int, 4 } } },
{ .name = "cloudabi_sys_file_rename", .ret_type = 1, .nargs = 4,
.args = { { Int, 0 }, { BinString | IN, 1 },
{ Int, 3 }, { BinString | IN, 4 } } },
{ .name = "cloudabi_sys_file_stat_fget", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CloudABIFileStat | OUT, 1 } } },
{ .name = "cloudabi_sys_file_stat_fput", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { CloudABIFileStat | IN, 1 },
{ CloudABIFSFlags, 2 } } },
{ .name = "cloudabi_sys_file_stat_get", .ret_type = 1, .nargs = 3,
.args = { { CloudABILookup, 0 }, { BinString | IN, 1 },
{ CloudABIFileStat | OUT, 3 } } },
{ .name = "cloudabi_sys_file_stat_put", .ret_type = 1, .nargs = 4,
.args = { { CloudABILookup, 0 }, { BinString | IN, 1 },
{ CloudABIFileStat | IN, 3 }, { CloudABIFSFlags, 4 } } },
{ .name = "cloudabi_sys_file_symlink", .ret_type = 1, .nargs = 3,
.args = { { BinString | IN, 0 },
{ Int, 2 }, { BinString | IN, 3 } } },
{ .name = "cloudabi_sys_file_unlink", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { BinString | IN, 1 },
{ CloudABIULFlags, 3 } } },
{ .name = "cloudabi_sys_lock_unlock", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { CloudABIMFlags, 1 } } },
{ .name = "cloudabi_sys_mem_advise", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Int, 1 }, { CloudABIAdvice, 2 } } },
{ .name = "cloudabi_sys_mem_map", .ret_type = 1, .nargs = 6,
.args = { { Ptr, 0 }, { Int, 1 }, { CloudABIMProt, 2 },
{ CloudABIMFlags, 3 }, { Int, 4 }, { Int, 5 } } },
{ .name = "cloudabi_sys_mem_protect", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Int, 1 }, { CloudABIMProt, 2 } } },
{ .name = "cloudabi_sys_mem_sync", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Int, 1 }, { CloudABIMSFlags, 2 } } },
{ .name = "cloudabi_sys_mem_unmap", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Int, 1 } } },
{ .name = "cloudabi_sys_proc_exec", .ret_type = 1, .nargs = 5,
.args = { { Int, 0 }, { BinString | IN, 1 }, { Int, 2 },
{ IntArray, 3 }, { Int, 4 } } },
{ .name = "cloudabi_sys_proc_exit", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "cloudabi_sys_proc_fork", .ret_type = 1, .nargs = 0 },
{ .name = "cloudabi_sys_proc_raise", .ret_type = 1, .nargs = 1,
.args = { { CloudABISignal, 0 } } },
{ .name = "cloudabi_sys_random_get", .ret_type = 1, .nargs = 2,
.args = { { BinString | OUT, 0 }, { Int, 1 } } },
{ .name = "cloudabi_sys_sock_shutdown", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CloudABISDFlags, 1 } } },
{ .name = "cloudabi_sys_thread_exit", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { CloudABIMFlags, 1 } } },
{ .name = "cloudabi_sys_thread_yield", .ret_type = 1, .nargs = 0 },
{ .name = 0 },
};
static STAILQ_HEAD(, syscall) syscalls;
/* Xlat idea taken from strace */
struct xlat {
int val;
const char *str;
};
#define X(a) { a, #a },
#define XEND { 0, NULL }
static struct xlat poll_flags[] = {
X(POLLSTANDARD) X(POLLIN) X(POLLPRI) X(POLLOUT) X(POLLERR)
X(POLLHUP) X(POLLNVAL) X(POLLRDNORM) X(POLLRDBAND)
X(POLLWRBAND) X(POLLINIGNEOF) XEND
};
static struct xlat sigaction_flags[] = {
X(SA_ONSTACK) X(SA_RESTART) X(SA_RESETHAND) X(SA_NOCLDSTOP)
X(SA_NODEFER) X(SA_NOCLDWAIT) X(SA_SIGINFO) XEND
};
static struct xlat linux_socketcall_ops[] = {
X(LINUX_SOCKET) X(LINUX_BIND) X(LINUX_CONNECT) X(LINUX_LISTEN)
X(LINUX_ACCEPT) X(LINUX_GETSOCKNAME) X(LINUX_GETPEERNAME)
X(LINUX_SOCKETPAIR) X(LINUX_SEND) X(LINUX_RECV) X(LINUX_SENDTO)
X(LINUX_RECVFROM) X(LINUX_SHUTDOWN) X(LINUX_SETSOCKOPT)
X(LINUX_GETSOCKOPT) X(LINUX_SENDMSG) X(LINUX_RECVMSG)
XEND
};
#undef X
#define X(a) { CLOUDABI_##a, #a },
static struct xlat cloudabi_advice[] = {
X(ADVICE_DONTNEED) X(ADVICE_NOREUSE) X(ADVICE_NORMAL)
X(ADVICE_RANDOM) X(ADVICE_SEQUENTIAL) X(ADVICE_WILLNEED)
XEND
};
static struct xlat cloudabi_clockid[] = {
X(CLOCK_MONOTONIC) X(CLOCK_PROCESS_CPUTIME_ID)
X(CLOCK_REALTIME) X(CLOCK_THREAD_CPUTIME_ID)
XEND
};
static struct xlat cloudabi_fdflags[] = {
X(FDFLAG_APPEND) X(FDFLAG_DSYNC) X(FDFLAG_NONBLOCK)
X(FDFLAG_RSYNC) X(FDFLAG_SYNC)
XEND
};
static struct xlat cloudabi_fdsflags[] = {
X(FDSTAT_FLAGS) X(FDSTAT_RIGHTS)
XEND
};
static struct xlat cloudabi_filetype[] = {
X(FILETYPE_UNKNOWN) X(FILETYPE_BLOCK_DEVICE)
X(FILETYPE_CHARACTER_DEVICE) X(FILETYPE_DIRECTORY)
X(FILETYPE_PROCESS) X(FILETYPE_REGULAR_FILE)
X(FILETYPE_SHARED_MEMORY) X(FILETYPE_SOCKET_DGRAM)
X(FILETYPE_SOCKET_STREAM) X(FILETYPE_SYMBOLIC_LINK)
XEND
};
static struct xlat cloudabi_fsflags[] = {
X(FILESTAT_ATIM) X(FILESTAT_ATIM_NOW) X(FILESTAT_MTIM)
X(FILESTAT_MTIM_NOW) X(FILESTAT_SIZE)
XEND
};
static struct xlat cloudabi_mflags[] = {
X(MAP_ANON) X(MAP_FIXED) X(MAP_PRIVATE) X(MAP_SHARED)
XEND
};
static struct xlat cloudabi_mprot[] = {
X(PROT_EXEC) X(PROT_WRITE) X(PROT_READ)
XEND
};
static struct xlat cloudabi_msflags[] = {
X(MS_ASYNC) X(MS_INVALIDATE) X(MS_SYNC)
XEND
};
static struct xlat cloudabi_oflags[] = {
X(O_CREAT) X(O_DIRECTORY) X(O_EXCL) X(O_TRUNC)
XEND
};
static struct xlat cloudabi_sdflags[] = {
X(SHUT_RD) X(SHUT_WR)
XEND
};
static struct xlat cloudabi_signal[] = {
X(SIGABRT) X(SIGALRM) X(SIGBUS) X(SIGCHLD) X(SIGCONT) X(SIGFPE)
X(SIGHUP) X(SIGILL) X(SIGINT) X(SIGKILL) X(SIGPIPE) X(SIGQUIT)
X(SIGSEGV) X(SIGSTOP) X(SIGSYS) X(SIGTERM) X(SIGTRAP) X(SIGTSTP)
X(SIGTTIN) X(SIGTTOU) X(SIGURG) X(SIGUSR1) X(SIGUSR2)
X(SIGVTALRM) X(SIGXCPU) X(SIGXFSZ)
XEND
};
static struct xlat cloudabi_ulflags[] = {
X(UNLINK_REMOVEDIR)
XEND
};
static struct xlat cloudabi_whence[] = {
X(WHENCE_CUR) X(WHENCE_END) X(WHENCE_SET)
XEND
};
#undef X
#undef XEND
/*
* Searches an xlat array for a value, and returns it if found. Otherwise
* return a string representation.
*/
static const char *
lookup(struct xlat *xlat, int val, int base)
{
static char tmp[16];
for (; xlat->str != NULL; xlat++)
if (xlat->val == val)
return (xlat->str);
switch (base) {
case 8:
sprintf(tmp, "0%o", val);
break;
case 16:
sprintf(tmp, "0x%x", val);
break;
case 10:
sprintf(tmp, "%u", val);
break;
default:
errx(1,"Unknown lookup base");
break;
}
return (tmp);
}
static const char *
xlookup(struct xlat *xlat, int val)
{
return (lookup(xlat, val, 16));
}
/*
* Searches an xlat array containing bitfield values. Remaining bits
* set after removing the known ones are printed at the end:
* IN|0x400.
*/
static char *
xlookup_bits(struct xlat *xlat, int val)
{
int len, rem;
static char str[512];
len = 0;
rem = val;
for (; xlat->str != NULL; xlat++) {
if ((xlat->val & rem) == xlat->val) {
/*
* Don't print the "all-bits-zero" string unless all
* bits are really zero.
*/
if (xlat->val == 0 && val != 0)
continue;
len += sprintf(str + len, "%s|", xlat->str);
rem &= ~(xlat->val);
}
}
/*
* If we have leftover bits or didn't match anything, print
* the remainder.
*/
if (rem || len == 0)
len += sprintf(str + len, "0x%x", rem);
if (len && str[len - 1] == '|')
len--;
str[len] = 0;
return (str);
}
static void
print_integer_arg(const char *(*decoder)(int), FILE *fp, int value)
{
const char *str;
str = decoder(value);
if (str != NULL)
fputs(str, fp);
else
fprintf(fp, "%d", value);
}
static void
print_mask_arg(bool (*decoder)(FILE *, int, int *), FILE *fp, int value)
{
int rem;
if (!decoder(fp, value, &rem))
fprintf(fp, "0x%x", rem);
else if (rem != 0)
fprintf(fp, "|0x%x", rem);
}
static void
print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), FILE *fp,
uint32_t value)
{
uint32_t rem;
if (!decoder(fp, value, &rem))
fprintf(fp, "0x%x", rem);
else if (rem != 0)
fprintf(fp, "|0x%x", rem);
}
#ifndef __LP64__
/*
* Add argument padding to subsequent system calls after Quad
* syscall arguments as needed. This used to be done by hand in the
* decoded_syscalls table which was ugly and error prone. It is
* simpler to do the fixup of offsets at initialization time than when
* decoding arguments.
*/
static void
quad_fixup(struct syscall *sc)
{
int offset, prev;
u_int i;
offset = 0;
prev = -1;
for (i = 0; i < sc->nargs; i++) {
/* This arg type is a dummy that doesn't use offset. */
if ((sc->args[i].type & ARG_MASK) == PipeFds)
continue;
assert(prev < sc->args[i].offset);
prev = sc->args[i].offset;
sc->args[i].offset += offset;
switch (sc->args[i].type & ARG_MASK) {
case Quad:
case QuadHex:
#ifdef __powerpc__
/*
* 64-bit arguments on 32-bit powerpc must be
* 64-bit aligned. If the current offset is
* not aligned, the calling convention inserts
* a 32-bit pad argument that should be skipped.
*/
if (sc->args[i].offset % 2 == 1) {
sc->args[i].offset++;
offset++;
}
#endif
offset++;
default:
break;
}
}
}
#endif
void
init_syscalls(void)
{
struct syscall *sc;
STAILQ_INIT(&syscalls);
for (sc = decoded_syscalls; sc->name != NULL; sc++) {
#ifndef __LP64__
quad_fixup(sc);
#endif
STAILQ_INSERT_HEAD(&syscalls, sc, entries);
}
}
static struct syscall *
find_syscall(struct procabi *abi, u_int number)
{
struct extra_syscall *es;
if (number < nitems(abi->syscalls))
return (abi->syscalls[number]);
STAILQ_FOREACH(es, &abi->extra_syscalls, entries) {
if (es->number == number)
return (es->sc);
}
return (NULL);
}
static void
add_syscall(struct procabi *abi, u_int number, struct syscall *sc)
{
struct extra_syscall *es;
if (number < nitems(abi->syscalls)) {
assert(abi->syscalls[number] == NULL);
abi->syscalls[number] = sc;
} else {
es = malloc(sizeof(*es));
es->sc = sc;
es->number = number;
STAILQ_INSERT_TAIL(&abi->extra_syscalls, es, entries);
}
}
/*
* If/when the list gets big, it might be desirable to do it
* as a hash table or binary search.
*/
struct syscall *
get_syscall(struct threadinfo *t, u_int number, u_int nargs)
{
struct syscall *sc;
const char *name;
char *new_name;
u_int i;
sc = find_syscall(t->proc->abi, number);
if (sc != NULL)
return (sc);
name = sysdecode_syscallname(t->proc->abi->abi, number);
if (name == NULL) {
asprintf(&new_name, "#%d", number);
name = new_name;
} else
new_name = NULL;
STAILQ_FOREACH(sc, &syscalls, entries) {
if (strcmp(name, sc->name) == 0) {
add_syscall(t->proc->abi, number, sc);
free(new_name);
return (sc);
}
}
/* It is unknown. Add it into the list. */
#if DEBUG
fprintf(stderr, "unknown syscall %s -- setting args to %d\n", name,
nargs);
#endif
sc = calloc(1, sizeof(struct syscall));
sc->name = name;
if (new_name != NULL)
sc->unknown = true;
sc->ret_type = 1;
sc->nargs = nargs;
for (i = 0; i < nargs; i++) {
sc->args[i].offset = i;
/* Treat all unknown arguments as LongHex. */
sc->args[i].type = LongHex;
}
STAILQ_INSERT_HEAD(&syscalls, sc, entries);
add_syscall(t->proc->abi, number, sc);
return (sc);
}
/*
* Copy a fixed amount of bytes from the process.
*/
static int
get_struct(pid_t pid, uintptr_t offset, void *buf, int len)
{
struct ptrace_io_desc iorequest;
iorequest.piod_op = PIOD_READ_D;
iorequest.piod_offs = (void *)offset;
iorequest.piod_addr = buf;
iorequest.piod_len = len;
if (ptrace(PT_IO, pid, (caddr_t)&iorequest, 0) < 0)
return (-1);
return (0);
}
#define MAXSIZE 4096
/*
* Copy a string from the process. Note that it is
* expected to be a C string, but if max is set, it will
* only get that much.
*/
static char *
get_string(pid_t pid, uintptr_t addr, int max)
{
struct ptrace_io_desc iorequest;
char *buf, *nbuf;
size_t offset, size, totalsize;
offset = 0;
if (max)
size = max + 1;
else {
/* Read up to the end of the current page. */
size = PAGE_SIZE - ((uintptr_t)addr % PAGE_SIZE);
if (size > MAXSIZE)
size = MAXSIZE;
}
totalsize = size;
buf = malloc(totalsize);
if (buf == NULL)
return (NULL);
for (;;) {
iorequest.piod_op = PIOD_READ_D;
iorequest.piod_offs = (void *)(addr + offset);
iorequest.piod_addr = buf + offset;
iorequest.piod_len = size;
if (ptrace(PT_IO, pid, (caddr_t)&iorequest, 0) < 0) {
free(buf);
return (NULL);
}
if (memchr(buf + offset, '\0', size) != NULL)
return (buf);
offset += size;
if (totalsize < MAXSIZE && max == 0) {
size = MAXSIZE - totalsize;
if (size > PAGE_SIZE)
size = PAGE_SIZE;
nbuf = realloc(buf, totalsize + size);
if (nbuf == NULL) {
buf[totalsize - 1] = '\0';
return (buf);
}
buf = nbuf;
totalsize += size;
} else {
buf[totalsize - 1] = '\0';
return (buf);
}
}
}
static const char *
strsig2(int sig)
{
static char tmp[32];
const char *signame;
signame = sysdecode_signal(sig);
if (signame == NULL) {
snprintf(tmp, sizeof(tmp), "%d", sig);
signame = tmp;
}
return (signame);
}
static void
print_kevent(FILE *fp, struct kevent *ke)
{
switch (ke->filter) {
case EVFILT_READ:
case EVFILT_WRITE:
case EVFILT_VNODE:
case EVFILT_PROC:
case EVFILT_TIMER:
case EVFILT_PROCDESC:
case EVFILT_EMPTY:
fprintf(fp, "%ju", (uintmax_t)ke->ident);
break;
case EVFILT_SIGNAL:
fputs(strsig2(ke->ident), fp);
break;
default:
fprintf(fp, "%p", (void *)ke->ident);
}
fprintf(fp, ",");
print_integer_arg(sysdecode_kevent_filter, fp, ke->filter);
fprintf(fp, ",");
print_mask_arg(sysdecode_kevent_flags, fp, ke->flags);
fprintf(fp, ",");
sysdecode_kevent_fflags(fp, ke->filter, ke->fflags, 16);
fprintf(fp, ",%#jx,%p", (uintmax_t)ke->data, ke->udata);
}
static void
print_utrace(FILE *fp, void *utrace_addr, size_t len)
{
unsigned char *utrace_buffer;
fprintf(fp, "{ ");
if (sysdecode_utrace(fp, utrace_addr, len)) {
fprintf(fp, " }");
return;
}
utrace_buffer = utrace_addr;
fprintf(fp, "%zu:", len);
while (len--)
fprintf(fp, " %02x", *utrace_buffer++);
fprintf(fp, " }");
}
static void
print_pointer(FILE *fp, uintptr_t arg)
{
fprintf(fp, "%p", (void *)arg);
}
static void
print_sockaddr(FILE *fp, struct trussinfo *trussinfo, uintptr_t arg,
socklen_t len)
{
char addr[64];
struct sockaddr_in *lsin;
struct sockaddr_in6 *lsin6;
struct sockaddr_un *sun;
struct sockaddr *sa;
u_char *q;
pid_t pid = trussinfo->curthread->proc->pid;
if (arg == 0) {
fputs("NULL", fp);
return;
}
/* If the length is too small, just bail. */
if (len < sizeof(*sa)) {
print_pointer(fp, arg);
return;
}
sa = calloc(1, len);
if (get_struct(pid, arg, sa, len) == -1) {
free(sa);
print_pointer(fp, arg);
return;
}
switch (sa->sa_family) {
case AF_INET:
if (len < sizeof(*lsin))
goto sockaddr_short;
lsin = (struct sockaddr_in *)(void *)sa;
inet_ntop(AF_INET, &lsin->sin_addr, addr, sizeof(addr));
fprintf(fp, "{ AF_INET %s:%d }", addr,
htons(lsin->sin_port));
break;
case AF_INET6:
if (len < sizeof(*lsin6))
goto sockaddr_short;
lsin6 = (struct sockaddr_in6 *)(void *)sa;
inet_ntop(AF_INET6, &lsin6->sin6_addr, addr,
sizeof(addr));
fprintf(fp, "{ AF_INET6 [%s]:%d }", addr,
htons(lsin6->sin6_port));
break;
case AF_UNIX:
sun = (struct sockaddr_un *)sa;
fprintf(fp, "{ AF_UNIX \"%.*s\" }",
(int)(len - offsetof(struct sockaddr_un, sun_path)),
sun->sun_path);
break;
default:
sockaddr_short:
fprintf(fp,
"{ sa_len = %d, sa_family = %d, sa_data = {",
(int)sa->sa_len, (int)sa->sa_family);
for (q = (u_char *)sa->sa_data;
q < (u_char *)sa + len; q++)
fprintf(fp, "%s 0x%02x",
q == (u_char *)sa->sa_data ? "" : ",",
*q);
fputs(" } }", fp);
}
free(sa);
}
#define IOV_LIMIT 16
static void
print_iovec(FILE *fp, struct trussinfo *trussinfo, uintptr_t arg, int iovcnt)
{
struct iovec iov[IOV_LIMIT];
size_t max_string = trussinfo->strsize;
char tmp2[max_string + 1], *tmp3;
size_t len;
pid_t pid = trussinfo->curthread->proc->pid;
int i;
bool buf_truncated, iov_truncated;
if (iovcnt <= 0) {
print_pointer(fp, arg);
return;
}
if (iovcnt > IOV_LIMIT) {
iovcnt = IOV_LIMIT;
iov_truncated = true;
} else {
iov_truncated = false;
}
if (get_struct(pid, arg, &iov, iovcnt * sizeof(struct iovec)) == -1) {
print_pointer(fp, arg);
return;
}
fputs("[", fp);
for (i = 0; i < iovcnt; i++) {
len = iov[i].iov_len;
if (len > max_string) {
len = max_string;
buf_truncated = true;
} else {
buf_truncated = false;
}
fprintf(fp, "%s{", (i > 0) ? "," : "");
if (len && get_struct(pid, (uintptr_t)iov[i].iov_base, &tmp2, len) != -1) {
tmp3 = malloc(len * 4 + 1);
while (len) {
if (strvisx(tmp3, tmp2, len,
VIS_CSTYLE|VIS_TAB|VIS_NL) <=
(int)max_string)
break;
len--;
buf_truncated = true;
}
fprintf(fp, "\"%s\"%s", tmp3,
buf_truncated ? "..." : "");
free(tmp3);
} else {
print_pointer(fp, (uintptr_t)iov[i].iov_base);
}
fprintf(fp, ",%zu}", iov[i].iov_len);
}
fprintf(fp, "%s%s", iov_truncated ? ",..." : "", "]");
}
static void
print_gen_cmsg(FILE *fp, struct cmsghdr *cmsghdr)
{
u_char *q;
fputs("{", fp);
for (q = CMSG_DATA(cmsghdr);
q < (u_char *)cmsghdr + cmsghdr->cmsg_len; q++) {
fprintf(fp, "%s0x%02x", q == CMSG_DATA(cmsghdr) ? "" : ",", *q);
}
fputs("}", fp);
}
static void
print_sctp_initmsg(FILE *fp, struct sctp_initmsg *init)
{
fprintf(fp, "{out=%u,", init->sinit_num_ostreams);
fprintf(fp, "in=%u,", init->sinit_max_instreams);
fprintf(fp, "max_rtx=%u,", init->sinit_max_attempts);
fprintf(fp, "max_rto=%u}", init->sinit_max_init_timeo);
}
static void
print_sctp_sndrcvinfo(FILE *fp, bool receive, struct sctp_sndrcvinfo *info)
{
fprintf(fp, "{sid=%u,", info->sinfo_stream);
if (receive) {
fprintf(fp, "ssn=%u,", info->sinfo_ssn);
}
fputs("flgs=", fp);
sysdecode_sctp_sinfo_flags(fp, info->sinfo_flags);
fprintf(fp, ",ppid=%u,", ntohl(info->sinfo_ppid));
if (!receive) {
fprintf(fp, "ctx=%u,", info->sinfo_context);
fprintf(fp, "ttl=%u,", info->sinfo_timetolive);
}
if (receive) {
fprintf(fp, "tsn=%u,", info->sinfo_tsn);
fprintf(fp, "cumtsn=%u,", info->sinfo_cumtsn);
}
fprintf(fp, "id=%u}", info->sinfo_assoc_id);
}
static void
print_sctp_sndinfo(FILE *fp, struct sctp_sndinfo *info)
{
fprintf(fp, "{sid=%u,", info->snd_sid);
fputs("flgs=", fp);
print_mask_arg(sysdecode_sctp_snd_flags, fp, info->snd_flags);
fprintf(fp, ",ppid=%u,", ntohl(info->snd_ppid));
fprintf(fp, "ctx=%u,", info->snd_context);
fprintf(fp, "id=%u}", info->snd_assoc_id);
}
static void
print_sctp_rcvinfo(FILE *fp, struct sctp_rcvinfo *info)
{
fprintf(fp, "{sid=%u,", info->rcv_sid);
fprintf(fp, "ssn=%u,", info->rcv_ssn);
fputs("flgs=", fp);
print_mask_arg(sysdecode_sctp_rcv_flags, fp, info->rcv_flags);
fprintf(fp, ",ppid=%u,", ntohl(info->rcv_ppid));
fprintf(fp, "tsn=%u,", info->rcv_tsn);
fprintf(fp, "cumtsn=%u,", info->rcv_cumtsn);
fprintf(fp, "ctx=%u,", info->rcv_context);
fprintf(fp, "id=%u}", info->rcv_assoc_id);
}
static void
print_sctp_nxtinfo(FILE *fp, struct sctp_nxtinfo *info)
{
fprintf(fp, "{sid=%u,", info->nxt_sid);
fputs("flgs=", fp);
print_mask_arg(sysdecode_sctp_nxt_flags, fp, info->nxt_flags);
fprintf(fp, ",ppid=%u,", ntohl(info->nxt_ppid));
fprintf(fp, "len=%u,", info->nxt_length);
fprintf(fp, "id=%u}", info->nxt_assoc_id);
}
static void
print_sctp_prinfo(FILE *fp, struct sctp_prinfo *info)
{
fputs("{pol=", fp);
print_integer_arg(sysdecode_sctp_pr_policy, fp, info->pr_policy);
fprintf(fp, ",val=%u}", info->pr_value);
}
static void
print_sctp_authinfo(FILE *fp, struct sctp_authinfo *info)
{
fprintf(fp, "{num=%u}", info->auth_keynumber);
}
static void
print_sctp_ipv4_addr(FILE *fp, struct in_addr *addr)
{
char buf[INET_ADDRSTRLEN];
const char *s;
s = inet_ntop(AF_INET, addr, buf, INET_ADDRSTRLEN);
if (s != NULL)
fprintf(fp, "{addr=%s}", s);
else
fputs("{addr=???}", fp);
}
static void
print_sctp_ipv6_addr(FILE *fp, struct in6_addr *addr)
{
char buf[INET6_ADDRSTRLEN];
const char *s;
s = inet_ntop(AF_INET6, addr, buf, INET6_ADDRSTRLEN);
if (s != NULL)
fprintf(fp, "{addr=%s}", s);
else
fputs("{addr=???}", fp);
}
static void
print_sctp_cmsg(FILE *fp, bool receive, struct cmsghdr *cmsghdr)
{
void *data;
socklen_t len;
len = cmsghdr->cmsg_len;
data = CMSG_DATA(cmsghdr);
switch (cmsghdr->cmsg_type) {
case SCTP_INIT:
if (len == CMSG_LEN(sizeof(struct sctp_initmsg)))
print_sctp_initmsg(fp, (struct sctp_initmsg *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
case SCTP_SNDRCV:
if (len == CMSG_LEN(sizeof(struct sctp_sndrcvinfo)))
print_sctp_sndrcvinfo(fp, receive,
(struct sctp_sndrcvinfo *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
#if 0
case SCTP_EXTRCV:
if (len == CMSG_LEN(sizeof(struct sctp_extrcvinfo)))
print_sctp_extrcvinfo(fp,
(struct sctp_extrcvinfo *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
#endif
case SCTP_SNDINFO:
if (len == CMSG_LEN(sizeof(struct sctp_sndinfo)))
print_sctp_sndinfo(fp, (struct sctp_sndinfo *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
case SCTP_RCVINFO:
if (len == CMSG_LEN(sizeof(struct sctp_rcvinfo)))
print_sctp_rcvinfo(fp, (struct sctp_rcvinfo *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
case SCTP_NXTINFO:
if (len == CMSG_LEN(sizeof(struct sctp_nxtinfo)))
print_sctp_nxtinfo(fp, (struct sctp_nxtinfo *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
case SCTP_PRINFO:
if (len == CMSG_LEN(sizeof(struct sctp_prinfo)))
print_sctp_prinfo(fp, (struct sctp_prinfo *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
case SCTP_AUTHINFO:
if (len == CMSG_LEN(sizeof(struct sctp_authinfo)))
print_sctp_authinfo(fp, (struct sctp_authinfo *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
case SCTP_DSTADDRV4:
if (len == CMSG_LEN(sizeof(struct in_addr)))
print_sctp_ipv4_addr(fp, (struct in_addr *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
case SCTP_DSTADDRV6:
if (len == CMSG_LEN(sizeof(struct in6_addr)))
print_sctp_ipv6_addr(fp, (struct in6_addr *)data);
else
print_gen_cmsg(fp, cmsghdr);
break;
default:
print_gen_cmsg(fp, cmsghdr);
}
}
static void
print_cmsgs(FILE *fp, pid_t pid, bool receive, struct msghdr *msghdr)
{
struct cmsghdr *cmsghdr;
char *cmsgbuf;
const char *temp;
socklen_t len;
int level, type;
bool first;
len = msghdr->msg_controllen;
if (len == 0) {
fputs("{}", fp);
return;
}
cmsgbuf = calloc(1, len);
if (get_struct(pid, (uintptr_t)msghdr->msg_control, cmsgbuf, len) == -1) {
print_pointer(fp, (uintptr_t)msghdr->msg_control);
free(cmsgbuf);
return;
}
msghdr->msg_control = cmsgbuf;
first = true;
fputs("{", fp);
for (cmsghdr = CMSG_FIRSTHDR(msghdr);
cmsghdr != NULL;
cmsghdr = CMSG_NXTHDR(msghdr, cmsghdr)) {
level = cmsghdr->cmsg_level;
type = cmsghdr->cmsg_type;
len = cmsghdr->cmsg_len;
fprintf(fp, "%s{level=", first ? "" : ",");
print_integer_arg(sysdecode_sockopt_level, fp, level);
fputs(",type=", fp);
temp = sysdecode_cmsg_type(level, type);
if (temp) {
fputs(temp, fp);
} else {
fprintf(fp, "%d", type);
}
fputs(",data=", fp);
switch (level) {
case IPPROTO_SCTP:
print_sctp_cmsg(fp, receive, cmsghdr);
break;
default:
print_gen_cmsg(fp, cmsghdr);
break;
}
fputs("}", fp);
first = false;
}
fputs("}", fp);
free(cmsgbuf);
}
static void
print_sysctl_oid(FILE *fp, int *oid, size_t len)
{
size_t i;
bool first;
first = true;
fprintf(fp, "{ ");
for (i = 0; i < len; i++) {
fprintf(fp, "%s%d", first ? "" : ".", oid[i]);
first = false;
}
fprintf(fp, " }");
}
static void
print_sysctl(FILE *fp, int *oid, size_t len)
{
char name[BUFSIZ];
int qoid[CTL_MAXNAME + 2];
size_t i;
qoid[0] = CTL_SYSCTL;
qoid[1] = CTL_SYSCTL_NAME;
memcpy(qoid + 2, oid, len * sizeof(int));
i = sizeof(name);
if (sysctl(qoid, len + 2, name, &i, 0, 0) == -1)
print_sysctl_oid(fp, oid, len);
else
fprintf(fp, "%s", name);
}
/*
* Converts a syscall argument into a string. Said string is
* allocated via malloc(), so needs to be free()'d. sc is
* a pointer to the syscall description (see above); args is
* an array of all of the system call arguments.
*/
char *
print_arg(struct syscall_args *sc, unsigned long *args, register_t *retval,
struct trussinfo *trussinfo)
{
FILE *fp;
char *tmp;
size_t tmplen;
pid_t pid;
fp = open_memstream(&tmp, &tmplen);
pid = trussinfo->curthread->proc->pid;
switch (sc->type & ARG_MASK) {
case Hex:
fprintf(fp, "0x%x", (int)args[sc->offset]);
break;
case Octal:
fprintf(fp, "0%o", (int)args[sc->offset]);
break;
case Int:
fprintf(fp, "%d", (int)args[sc->offset]);
break;
case UInt:
fprintf(fp, "%u", (unsigned int)args[sc->offset]);
break;
case PUInt: {
unsigned int val;
if (get_struct(pid, args[sc->offset], &val,
sizeof(val)) == 0)
fprintf(fp, "{ %u }", val);
else
print_pointer(fp, args[sc->offset]);
break;
}
case LongHex:
fprintf(fp, "0x%lx", args[sc->offset]);
break;
case Long:
fprintf(fp, "%ld", args[sc->offset]);
break;
case Sizet:
fprintf(fp, "%zu", (size_t)args[sc->offset]);
break;
case ShmName:
/* Handle special SHM_ANON value. */
if ((char *)args[sc->offset] == SHM_ANON) {
fprintf(fp, "SHM_ANON");
break;
}
/* FALLTHROUGH */
case Name: {
/* NULL-terminated string. */
char *tmp2;
tmp2 = get_string(pid, args[sc->offset], 0);
fprintf(fp, "\"%s\"", tmp2);
free(tmp2);
break;
}
case BinString: {
/*
* Binary block of data that might have printable characters.
* XXX If type|OUT, assume that the length is the syscall's
* return value. Otherwise, assume that the length of the block
* is in the next syscall argument.
*/
int max_string = trussinfo->strsize;
char tmp2[max_string + 1], *tmp3;
int len;
int truncated = 0;
if (sc->type & OUT)
len = retval[0];
else
len = args[sc->offset + 1];
/*
* Don't print more than max_string characters, to avoid word
* wrap. If we have to truncate put some ... after the string.
*/
if (len > max_string) {
len = max_string;
truncated = 1;
}
if (len && get_struct(pid, args[sc->offset], &tmp2, len)
!= -1) {
tmp3 = malloc(len * 4 + 1);
while (len) {
if (strvisx(tmp3, tmp2, len,
VIS_CSTYLE|VIS_TAB|VIS_NL) <= max_string)
break;
len--;
truncated = 1;
}
fprintf(fp, "\"%s\"%s", tmp3, truncated ?
"..." : "");
free(tmp3);
} else {
print_pointer(fp, args[sc->offset]);
}
break;
}
case ExecArgs:
case ExecEnv:
case StringArray: {
uintptr_t addr;
union {
char *strarray[0];
char buf[PAGE_SIZE];
} u;
char *string;
size_t len;
u_int first, i;
/*
* Only parse argv[] and environment arrays from exec calls
* if requested.
*/
if (((sc->type & ARG_MASK) == ExecArgs &&
(trussinfo->flags & EXECVEARGS) == 0) ||
((sc->type & ARG_MASK) == ExecEnv &&
(trussinfo->flags & EXECVEENVS) == 0)) {
print_pointer(fp, args[sc->offset]);
break;
}
/*
* Read a page of pointers at a time. Punt if the top-level
* pointer is not aligned. Note that the first read is of
* a partial page.
*/
addr = args[sc->offset];
if (addr % sizeof(char *) != 0) {
print_pointer(fp, args[sc->offset]);
break;
}
len = PAGE_SIZE - (addr & PAGE_MASK);
if (get_struct(pid, addr, u.buf, len) == -1) {
print_pointer(fp, args[sc->offset]);
break;
}
fputc('[', fp);
first = 1;
i = 0;
while (u.strarray[i] != NULL) {
string = get_string(pid, (uintptr_t)u.strarray[i], 0);
fprintf(fp, "%s \"%s\"", first ? "" : ",", string);
free(string);
first = 0;
i++;
if (i == len / sizeof(char *)) {
addr += len;
len = PAGE_SIZE;
if (get_struct(pid, addr, u.buf, len) ==
-1) {
fprintf(fp, ", <inval>");
break;
}
i = 0;
}
}
fputs(" ]", fp);
break;
}
#ifdef __LP64__
case Quad:
fprintf(fp, "%ld", args[sc->offset]);
break;
case QuadHex:
fprintf(fp, "0x%lx", args[sc->offset]);
break;
#else
case Quad:
case QuadHex: {
unsigned long long ll;
#if _BYTE_ORDER == _LITTLE_ENDIAN
ll = (unsigned long long)args[sc->offset + 1] << 32 |
args[sc->offset];
#else
ll = (unsigned long long)args[sc->offset] << 32 |
args[sc->offset + 1];
#endif
if ((sc->type & ARG_MASK) == Quad)
fprintf(fp, "%lld", ll);
else
fprintf(fp, "0x%llx", ll);
break;
}
#endif
case PQuadHex: {
uint64_t val;
if (get_struct(pid, args[sc->offset], &val,
sizeof(val)) == 0)
fprintf(fp, "{ 0x%jx }", (uintmax_t)val);
else
print_pointer(fp, args[sc->offset]);
break;
}
case Ptr:
print_pointer(fp, args[sc->offset]);
break;
case Readlinkres: {
char *tmp2;
if (retval[0] == -1)
break;
tmp2 = get_string(pid, args[sc->offset], retval[0]);
fprintf(fp, "\"%s\"", tmp2);
free(tmp2);
break;
}
case Ioctl: {
const char *temp;
unsigned long cmd;
cmd = args[sc->offset];
temp = sysdecode_ioctlname(cmd);
if (temp)
fputs(temp, fp);
else {
fprintf(fp, "0x%lx { IO%s%s 0x%lx('%c'), %lu, %lu }",
cmd, cmd & IOC_OUT ? "R" : "",
cmd & IOC_IN ? "W" : "", IOCGROUP(cmd),
isprint(IOCGROUP(cmd)) ? (char)IOCGROUP(cmd) : '?',
cmd & 0xFF, IOCPARM_LEN(cmd));
}
break;
}
case Timespec: {
struct timespec ts;
if (get_struct(pid, args[sc->offset], &ts, sizeof(ts)) != -1)
fprintf(fp, "{ %jd.%09ld }", (intmax_t)ts.tv_sec,
ts.tv_nsec);
else
print_pointer(fp, args[sc->offset]);
break;
}
case Timespec2: {
struct timespec ts[2];
const char *sep;
unsigned int i;
if (get_struct(pid, args[sc->offset], &ts, sizeof(ts)) != -1) {
fputs("{ ", fp);
sep = "";
for (i = 0; i < nitems(ts); i++) {
fputs(sep, fp);
sep = ", ";
switch (ts[i].tv_nsec) {
case UTIME_NOW:
fprintf(fp, "UTIME_NOW");
break;
case UTIME_OMIT:
fprintf(fp, "UTIME_OMIT");
break;
default:
fprintf(fp, "%jd.%09ld",
(intmax_t)ts[i].tv_sec,
ts[i].tv_nsec);
break;
}
}
fputs(" }", fp);
} else
print_pointer(fp, args[sc->offset]);
break;
}
case Timeval: {
struct timeval tv;
if (get_struct(pid, args[sc->offset], &tv, sizeof(tv)) != -1)
fprintf(fp, "{ %jd.%06ld }", (intmax_t)tv.tv_sec,
tv.tv_usec);
else
print_pointer(fp, args[sc->offset]);
break;
}
case Timeval2: {
struct timeval tv[2];
if (get_struct(pid, args[sc->offset], &tv, sizeof(tv)) != -1)
fprintf(fp, "{ %jd.%06ld, %jd.%06ld }",
(intmax_t)tv[0].tv_sec, tv[0].tv_usec,
(intmax_t)tv[1].tv_sec, tv[1].tv_usec);
else
print_pointer(fp, args[sc->offset]);
break;
}
case Itimerval: {
struct itimerval itv;
if (get_struct(pid, args[sc->offset], &itv, sizeof(itv)) != -1)
fprintf(fp, "{ %jd.%06ld, %jd.%06ld }",
(intmax_t)itv.it_interval.tv_sec,
itv.it_interval.tv_usec,
(intmax_t)itv.it_value.tv_sec,
itv.it_value.tv_usec);
else
print_pointer(fp, args[sc->offset]);
break;
}
case LinuxSockArgs:
{
struct linux_socketcall_args largs;
if (get_struct(pid, args[sc->offset], (void *)&largs,
sizeof(largs)) != -1)
fprintf(fp, "{ %s, 0x%lx }",
lookup(linux_socketcall_ops, largs.what, 10),
(long unsigned int)largs.args);
else
print_pointer(fp, args[sc->offset]);
break;
}
case Pollfd: {
/*
* XXX: A Pollfd argument expects the /next/ syscall argument
* to be the number of fds in the array. This matches the poll
* syscall.
*/
struct pollfd *pfd;
int numfds = args[sc->offset + 1];
size_t bytes = sizeof(struct pollfd) * numfds;
int i;
if ((pfd = malloc(bytes)) == NULL)
err(1, "Cannot malloc %zu bytes for pollfd array",
bytes);
if (get_struct(pid, args[sc->offset], pfd, bytes) != -1) {
fputs("{", fp);
for (i = 0; i < numfds; i++) {
fprintf(fp, " %d/%s", pfd[i].fd,
xlookup_bits(poll_flags, pfd[i].events));
}
fputs(" }", fp);
} else {
print_pointer(fp, args[sc->offset]);
}
free(pfd);
break;
}
case Fd_set: {
/*
* XXX: A Fd_set argument expects the /first/ syscall argument
* to be the number of fds in the array. This matches the
* select syscall.
*/
fd_set *fds;
int numfds = args[0];
size_t bytes = _howmany(numfds, _NFDBITS) * _NFDBITS;
int i;
if ((fds = malloc(bytes)) == NULL)
err(1, "Cannot malloc %zu bytes for fd_set array",
bytes);
if (get_struct(pid, args[sc->offset], fds, bytes) != -1) {
fputs("{", fp);
for (i = 0; i < numfds; i++) {
if (FD_ISSET(i, fds))
fprintf(fp, " %d", i);
}
fputs(" }", fp);
} else
print_pointer(fp, args[sc->offset]);
free(fds);
break;
}
case Signal:
fputs(strsig2(args[sc->offset]), fp);
break;
case Sigset: {
long sig;
sigset_t ss;
int i, first;
sig = args[sc->offset];
if (get_struct(pid, args[sc->offset], (void *)&ss,
sizeof(ss)) == -1) {
print_pointer(fp, args[sc->offset]);
break;
}
fputs("{ ", fp);
first = 1;
for (i = 1; i < sys_nsig; i++) {
if (sigismember(&ss, i)) {
fprintf(fp, "%s%s", !first ? "|" : "",
strsig2(i));
first = 0;
}
}
if (!first)
fputc(' ', fp);
fputc('}', fp);
break;
}
case Sigprocmask:
print_integer_arg(sysdecode_sigprocmask_how, fp,
args[sc->offset]);
break;
case Fcntlflag:
/* XXX: Output depends on the value of the previous argument. */
if (sysdecode_fcntl_arg_p(args[sc->offset - 1]))
sysdecode_fcntl_arg(fp, args[sc->offset - 1],
args[sc->offset], 16);
break;
case Open:
print_mask_arg(sysdecode_open_flags, fp, args[sc->offset]);
break;
case Fcntl:
print_integer_arg(sysdecode_fcntl_cmd, fp, args[sc->offset]);
break;
case Mprot:
print_mask_arg(sysdecode_mmap_prot, fp, args[sc->offset]);
break;
case Mmapflags:
print_mask_arg(sysdecode_mmap_flags, fp, args[sc->offset]);
break;
case Whence:
print_integer_arg(sysdecode_whence, fp, args[sc->offset]);
break;
case ShmFlags:
print_mask_arg(sysdecode_shmflags, fp, args[sc->offset]);
break;
case Sockdomain:
print_integer_arg(sysdecode_socketdomain, fp, args[sc->offset]);
break;
case Socktype:
print_mask_arg(sysdecode_socket_type, fp, args[sc->offset]);
break;
case Shutdown:
print_integer_arg(sysdecode_shutdown_how, fp, args[sc->offset]);
break;
case Resource:
print_integer_arg(sysdecode_rlimit, fp, args[sc->offset]);
break;
case RusageWho:
print_integer_arg(sysdecode_getrusage_who, fp, args[sc->offset]);
break;
case Pathconf:
print_integer_arg(sysdecode_pathconf_name, fp, args[sc->offset]);
break;
case Rforkflags:
print_mask_arg(sysdecode_rfork_flags, fp, args[sc->offset]);
break;
case Sockaddr: {
socklen_t len;
if (args[sc->offset] == 0) {
fputs("NULL", fp);
break;
}
/*
* Extract the address length from the next argument. If
* this is an output sockaddr (OUT is set), then the
* next argument is a pointer to a socklen_t. Otherwise
* the next argument contains a socklen_t by value.
*/
if (sc->type & OUT) {
if (get_struct(pid, args[sc->offset + 1], &len,
sizeof(len)) == -1) {
print_pointer(fp, args[sc->offset]);
break;
}
} else
len = args[sc->offset + 1];
print_sockaddr(fp, trussinfo, args[sc->offset], len);
break;
}
case Sigaction: {
struct sigaction sa;
if (get_struct(pid, args[sc->offset], &sa, sizeof(sa)) != -1) {
fputs("{ ", fp);
if (sa.sa_handler == SIG_DFL)
fputs("SIG_DFL", fp);
else if (sa.sa_handler == SIG_IGN)
fputs("SIG_IGN", fp);
else
fprintf(fp, "%p", sa.sa_handler);
fprintf(fp, " %s ss_t }",
xlookup_bits(sigaction_flags, sa.sa_flags));
} else
print_pointer(fp, args[sc->offset]);
break;
}
case Kevent: {
/*
* XXX XXX: The size of the array is determined by either the
* next syscall argument, or by the syscall return value,
* depending on which argument number we are. This matches the
* kevent syscall, but luckily that's the only syscall that uses
* them.
*/
struct kevent *ke;
int numevents = -1;
size_t bytes;
int i;
if (sc->offset == 1)
numevents = args[sc->offset+1];
else if (sc->offset == 3 && retval[0] != -1)
numevents = retval[0];
if (numevents >= 0) {
bytes = sizeof(struct kevent) * numevents;
if ((ke = malloc(bytes)) == NULL)
err(1,
"Cannot malloc %zu bytes for kevent array",
bytes);
} else
ke = NULL;
if (numevents >= 0 && get_struct(pid, args[sc->offset],
ke, bytes) != -1) {
fputc('{', fp);
for (i = 0; i < numevents; i++) {
fputc(' ', fp);
print_kevent(fp, &ke[i]);
}
fputs(" }", fp);
} else {
print_pointer(fp, args[sc->offset]);
}
free(ke);
break;
}
case Kevent11: {
struct kevent_freebsd11 *ke11;
struct kevent ke;
int numevents = -1;
size_t bytes;
int i;
if (sc->offset == 1)
numevents = args[sc->offset+1];
else if (sc->offset == 3 && retval[0] != -1)
numevents = retval[0];
if (numevents >= 0) {
bytes = sizeof(struct kevent_freebsd11) * numevents;
if ((ke11 = malloc(bytes)) == NULL)
err(1,
"Cannot malloc %zu bytes for kevent array",
bytes);
} else
ke11 = NULL;
memset(&ke, 0, sizeof(ke));
if (numevents >= 0 && get_struct(pid, args[sc->offset],
ke11, bytes) != -1) {
fputc('{', fp);
for (i = 0; i < numevents; i++) {
fputc(' ', fp);
ke.ident = ke11[i].ident;
ke.filter = ke11[i].filter;
ke.flags = ke11[i].flags;
ke.fflags = ke11[i].fflags;
ke.data = ke11[i].data;
ke.udata = ke11[i].udata;
print_kevent(fp, &ke);
}
fputs(" }", fp);
} else {
print_pointer(fp, args[sc->offset]);
}
free(ke11);
break;
}
case Stat: {
struct stat st;
if (get_struct(pid, args[sc->offset], &st, sizeof(st))
!= -1) {
char mode[12];
strmode(st.st_mode, mode);
fprintf(fp,
"{ mode=%s,inode=%ju,size=%jd,blksize=%ld }", mode,
(uintmax_t)st.st_ino, (intmax_t)st.st_size,
(long)st.st_blksize);
} else {
print_pointer(fp, args[sc->offset]);
}
break;
}
case Stat11: {
struct freebsd11_stat st;
if (get_struct(pid, args[sc->offset], &st, sizeof(st))
!= -1) {
char mode[12];
strmode(st.st_mode, mode);
fprintf(fp,
"{ mode=%s,inode=%ju,size=%jd,blksize=%ld }", mode,
(uintmax_t)st.st_ino, (intmax_t)st.st_size,
(long)st.st_blksize);
} else {
print_pointer(fp, args[sc->offset]);
}
break;
}
case StatFs: {
unsigned int i;
struct statfs buf;
if (get_struct(pid, args[sc->offset], &buf,
sizeof(buf)) != -1) {
char fsid[17];
bzero(fsid, sizeof(fsid));
if (buf.f_fsid.val[0] != 0 || buf.f_fsid.val[1] != 0) {
for (i = 0; i < sizeof(buf.f_fsid); i++)
snprintf(&fsid[i*2],
sizeof(fsid) - (i*2), "%02x",
((u_char *)&buf.f_fsid)[i]);
}
fprintf(fp,
"{ fstypename=%s,mntonname=%s,mntfromname=%s,"
"fsid=%s }", buf.f_fstypename, buf.f_mntonname,
buf.f_mntfromname, fsid);
} else
print_pointer(fp, args[sc->offset]);
break;
}
case Rusage: {
struct rusage ru;
if (get_struct(pid, args[sc->offset], &ru, sizeof(ru))
!= -1) {
fprintf(fp,
"{ u=%jd.%06ld,s=%jd.%06ld,in=%ld,out=%ld }",
(intmax_t)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec,
(intmax_t)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec,
ru.ru_inblock, ru.ru_oublock);
} else
print_pointer(fp, args[sc->offset]);
break;
}
case Rlimit: {
struct rlimit rl;
if (get_struct(pid, args[sc->offset], &rl, sizeof(rl))
!= -1) {
fprintf(fp, "{ cur=%ju,max=%ju }",
rl.rlim_cur, rl.rlim_max);
} else
print_pointer(fp, args[sc->offset]);
break;
}
case ExitStatus: {
int status;
if (get_struct(pid, args[sc->offset], &status,
sizeof(status)) != -1) {
fputs("{ ", fp);
if (WIFCONTINUED(status))
fputs("CONTINUED", fp);
else if (WIFEXITED(status))
fprintf(fp, "EXITED,val=%d",
WEXITSTATUS(status));
else if (WIFSIGNALED(status))
fprintf(fp, "SIGNALED,sig=%s%s",
strsig2(WTERMSIG(status)),
WCOREDUMP(status) ? ",cored" : "");
else
fprintf(fp, "STOPPED,sig=%s",
strsig2(WTERMSIG(status)));
fputs(" }", fp);
} else
print_pointer(fp, args[sc->offset]);
break;
}
case Waitoptions:
print_mask_arg(sysdecode_wait6_options, fp, args[sc->offset]);
break;
case Idtype:
print_integer_arg(sysdecode_idtype, fp, args[sc->offset]);
break;
case Procctl:
print_integer_arg(sysdecode_procctl_cmd, fp, args[sc->offset]);
break;
case Umtxop:
print_integer_arg(sysdecode_umtx_op, fp, args[sc->offset]);
break;
case Atfd:
print_integer_arg(sysdecode_atfd, fp, args[sc->offset]);
break;
case Atflags:
print_mask_arg(sysdecode_atflags, fp, args[sc->offset]);
break;
case Accessmode:
print_mask_arg(sysdecode_access_mode, fp, args[sc->offset]);
break;
case Sysarch:
print_integer_arg(sysdecode_sysarch_number, fp,
args[sc->offset]);
break;
case Sysctl: {
char name[BUFSIZ];
int oid[CTL_MAXNAME + 2];
size_t len;
memset(name, 0, sizeof(name));
len = args[sc->offset + 1];
if (get_struct(pid, args[sc->offset], oid,
len * sizeof(oid[0])) != -1) {
fprintf(fp, "\"");
if (oid[0] == CTL_SYSCTL) {
fprintf(fp, "sysctl.");
switch (oid[1]) {
case CTL_SYSCTL_DEBUG:
fprintf(fp, "debug");
break;
case CTL_SYSCTL_NAME:
fprintf(fp, "name ");
print_sysctl_oid(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_NEXT:
fprintf(fp, "next");
break;
case CTL_SYSCTL_NAME2OID:
fprintf(fp, "name2oid %s",
get_string(pid,
args[sc->offset + 4],
args[sc->offset + 5]));
break;
case CTL_SYSCTL_OIDFMT:
fprintf(fp, "oidfmt ");
print_sysctl(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_OIDDESCR:
fprintf(fp, "oiddescr ");
print_sysctl(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_OIDLABEL:
fprintf(fp, "oidlabel ");
print_sysctl(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_NEXTNOSKIP:
fprintf(fp, "nextnoskip");
break;
default:
print_sysctl(fp, oid + 1, len - 1);
}
} else {
print_sysctl(fp, oid, len);
}
fprintf(fp, "\"");
}
break;
}
case PipeFds:
/*
* The pipe() system call in the kernel returns its
* two file descriptors via return values. However,
* the interface exposed by libc is that pipe()
* accepts a pointer to an array of descriptors.
* Format the output to match the libc API by printing
* the returned file descriptors as a fake argument.
*
* Overwrite the first retval to signal a successful
* return as well.
*/
fprintf(fp, "{ %d, %d }", (int)retval[0], (int)retval[1]);
retval[0] = 0;
break;
case Utrace: {
size_t len;
void *utrace_addr;
len = args[sc->offset + 1];
utrace_addr = calloc(1, len);
if (get_struct(pid, args[sc->offset],
(void *)utrace_addr, len) != -1)
print_utrace(fp, utrace_addr, len);
else
print_pointer(fp, args[sc->offset]);
free(utrace_addr);
break;
}
case IntArray: {
int descriptors[16];
unsigned long i, ndescriptors;
bool truncated;
ndescriptors = args[sc->offset + 1];
truncated = false;
if (ndescriptors > nitems(descriptors)) {
ndescriptors = nitems(descriptors);
truncated = true;
}
if (get_struct(pid, args[sc->offset],
descriptors, ndescriptors * sizeof(descriptors[0])) != -1) {
fprintf(fp, "{");
for (i = 0; i < ndescriptors; i++)
fprintf(fp, i == 0 ? " %d" : ", %d",
descriptors[i]);
fprintf(fp, truncated ? ", ... }" : " }");
} else
print_pointer(fp, args[sc->offset]);
break;
}
case Pipe2:
print_mask_arg(sysdecode_pipe2_flags, fp, args[sc->offset]);
break;
case CapFcntlRights: {
uint32_t rights;
if (sc->type & OUT) {
if (get_struct(pid, args[sc->offset], &rights,
sizeof(rights)) == -1) {
print_pointer(fp, args[sc->offset]);
break;
}
} else
rights = args[sc->offset];
print_mask_arg32(sysdecode_cap_fcntlrights, fp, rights);
break;
}
case Fadvice:
print_integer_arg(sysdecode_fadvice, fp, args[sc->offset]);
break;
case FileFlags: {
fflags_t rem;
if (!sysdecode_fileflags(fp, args[sc->offset], &rem))
fprintf(fp, "0x%x", rem);
else if (rem != 0)
fprintf(fp, "|0x%x", rem);
break;
}
case Flockop:
print_mask_arg(sysdecode_flock_operation, fp, args[sc->offset]);
break;
case Getfsstatmode:
print_integer_arg(sysdecode_getfsstat_mode, fp,
args[sc->offset]);
break;
case Kldsymcmd:
print_integer_arg(sysdecode_kldsym_cmd, fp, args[sc->offset]);
break;
case Kldunloadflags:
print_integer_arg(sysdecode_kldunload_flags, fp,
args[sc->offset]);
break;
case Madvice:
print_integer_arg(sysdecode_madvice, fp, args[sc->offset]);
break;
case Socklent:
fprintf(fp, "%u", (socklen_t)args[sc->offset]);
break;
case Sockprotocol: {
const char *temp;
int domain, protocol;
domain = args[sc->offset - 2];
protocol = args[sc->offset];
if (protocol == 0) {
fputs("0", fp);
} else {
temp = sysdecode_socket_protocol(domain, protocol);
if (temp) {
fputs(temp, fp);
} else {
fprintf(fp, "%d", protocol);
}
}
break;
}
case Sockoptlevel:
print_integer_arg(sysdecode_sockopt_level, fp,
args[sc->offset]);
break;
case Sockoptname: {
const char *temp;
int level, name;
level = args[sc->offset - 1];
name = args[sc->offset];
temp = sysdecode_sockopt_name(level, name);
if (temp) {
fputs(temp, fp);
} else {
fprintf(fp, "%d", name);
}
break;
}
case Msgflags:
print_mask_arg(sysdecode_msg_flags, fp, args[sc->offset]);
break;
case CapRights: {
cap_rights_t rights;
if (get_struct(pid, args[sc->offset], &rights,
sizeof(rights)) != -1) {
fputs("{ ", fp);
sysdecode_cap_rights(fp, &rights);
fputs(" }", fp);
} else
print_pointer(fp, args[sc->offset]);
break;
}
case Acltype:
print_integer_arg(sysdecode_acltype, fp, args[sc->offset]);
break;
case Extattrnamespace:
print_integer_arg(sysdecode_extattrnamespace, fp,
args[sc->offset]);
break;
case Minherit:
print_integer_arg(sysdecode_minherit_inherit, fp,
args[sc->offset]);
break;
case Mlockall:
print_mask_arg(sysdecode_mlockall_flags, fp, args[sc->offset]);
break;
case Mountflags:
print_mask_arg(sysdecode_mount_flags, fp, args[sc->offset]);
break;
case Msync:
print_mask_arg(sysdecode_msync_flags, fp, args[sc->offset]);
break;
case Priowhich:
print_integer_arg(sysdecode_prio_which, fp, args[sc->offset]);
break;
case Ptraceop:
print_integer_arg(sysdecode_ptrace_request, fp,
args[sc->offset]);
break;
case Quotactlcmd:
if (!sysdecode_quotactl_cmd(fp, args[sc->offset]))
fprintf(fp, "%#x", (int)args[sc->offset]);
break;
case Reboothowto:
print_mask_arg(sysdecode_reboot_howto, fp, args[sc->offset]);
break;
case Rtpriofunc:
print_integer_arg(sysdecode_rtprio_function, fp,
args[sc->offset]);
break;
case Schedpolicy:
print_integer_arg(sysdecode_scheduler_policy, fp,
args[sc->offset]);
break;
case Schedparam: {
struct sched_param sp;
if (get_struct(pid, args[sc->offset], &sp, sizeof(sp)) != -1)
fprintf(fp, "{ %d }", sp.sched_priority);
else
print_pointer(fp, args[sc->offset]);
break;
}
case PSig: {
int sig;
if (get_struct(pid, args[sc->offset], &sig, sizeof(sig)) == 0)
fprintf(fp, "{ %s }", strsig2(sig));
else
print_pointer(fp, args[sc->offset]);
break;
}
case Siginfo: {
siginfo_t si;
if (get_struct(pid, args[sc->offset], &si, sizeof(si)) != -1) {
fprintf(fp, "{ signo=%s", strsig2(si.si_signo));
decode_siginfo(fp, &si);
fprintf(fp, " }");
} else
print_pointer(fp, args[sc->offset]);
break;
}
case Iovec:
/*
* Print argument as an array of struct iovec, where the next
* syscall argument is the number of elements of the array.
*/
print_iovec(fp, trussinfo, args[sc->offset],
(int)args[sc->offset + 1]);
break;
case Sctpsndrcvinfo: {
struct sctp_sndrcvinfo info;
if (get_struct(pid, args[sc->offset],
&info, sizeof(struct sctp_sndrcvinfo)) == -1) {
print_pointer(fp, args[sc->offset]);
break;
}
print_sctp_sndrcvinfo(fp, sc->type & OUT, &info);
break;
}
case Msghdr: {
struct msghdr msghdr;
if (get_struct(pid, args[sc->offset],
&msghdr, sizeof(struct msghdr)) == -1) {
print_pointer(fp, args[sc->offset]);
break;
}
fputs("{", fp);
print_sockaddr(fp, trussinfo, (uintptr_t)msghdr.msg_name, msghdr.msg_namelen);
fprintf(fp, ",%d,", msghdr.msg_namelen);
print_iovec(fp, trussinfo, (uintptr_t)msghdr.msg_iov, msghdr.msg_iovlen);
fprintf(fp, ",%d,", msghdr.msg_iovlen);
print_cmsgs(fp, pid, sc->type & OUT, &msghdr);
fprintf(fp, ",%u,", msghdr.msg_controllen);
print_mask_arg(sysdecode_msg_flags, fp, msghdr.msg_flags);
fputs("}", fp);
break;
}
case CloudABIAdvice:
fputs(xlookup(cloudabi_advice, args[sc->offset]), fp);
break;
case CloudABIClockID:
fputs(xlookup(cloudabi_clockid, args[sc->offset]), fp);
break;
case CloudABIFDSFlags:
fputs(xlookup_bits(cloudabi_fdsflags, args[sc->offset]), fp);
break;
case CloudABIFDStat: {
cloudabi_fdstat_t fds;
if (get_struct(pid, args[sc->offset], &fds, sizeof(fds))
!= -1) {
fprintf(fp, "{ %s, ",
xlookup(cloudabi_filetype, fds.fs_filetype));
fprintf(fp, "%s, ... }",
xlookup_bits(cloudabi_fdflags, fds.fs_flags));
} else
print_pointer(fp, args[sc->offset]);
break;
}
case CloudABIFileStat: {
cloudabi_filestat_t fsb;
if (get_struct(pid, args[sc->offset], &fsb, sizeof(fsb))
!= -1)
fprintf(fp, "{ %s, %ju }",
xlookup(cloudabi_filetype, fsb.st_filetype),
(uintmax_t)fsb.st_size);
else
print_pointer(fp, args[sc->offset]);
break;
}
case CloudABIFileType:
fputs(xlookup(cloudabi_filetype, args[sc->offset]), fp);
break;
case CloudABIFSFlags:
fputs(xlookup_bits(cloudabi_fsflags, args[sc->offset]), fp);
break;
case CloudABILookup:
if ((args[sc->offset] & CLOUDABI_LOOKUP_SYMLINK_FOLLOW) != 0)
fprintf(fp, "%d|LOOKUP_SYMLINK_FOLLOW",
(int)args[sc->offset]);
else
fprintf(fp, "%d", (int)args[sc->offset]);
break;
case CloudABIMFlags:
fputs(xlookup_bits(cloudabi_mflags, args[sc->offset]), fp);
break;
case CloudABIMProt:
fputs(xlookup_bits(cloudabi_mprot, args[sc->offset]), fp);
break;
case CloudABIMSFlags:
fputs(xlookup_bits(cloudabi_msflags, args[sc->offset]), fp);
break;
case CloudABIOFlags:
fputs(xlookup_bits(cloudabi_oflags, args[sc->offset]), fp);
break;
case CloudABISDFlags:
fputs(xlookup_bits(cloudabi_sdflags, args[sc->offset]), fp);
break;
case CloudABISignal:
fputs(xlookup(cloudabi_signal, args[sc->offset]), fp);
break;
case CloudABITimestamp:
fprintf(fp, "%lu.%09lus", args[sc->offset] / 1000000000,
args[sc->offset] % 1000000000);
break;
case CloudABIULFlags:
fputs(xlookup_bits(cloudabi_ulflags, args[sc->offset]), fp);
break;
case CloudABIWhence:
fputs(xlookup(cloudabi_whence, args[sc->offset]), fp);
break;
default:
errx(1, "Invalid argument type %d\n", sc->type & ARG_MASK);
}
fclose(fp);
return (tmp);
}
/*
* Print (to outfile) the system call and its arguments.
*/
void
print_syscall(struct trussinfo *trussinfo)
{
struct threadinfo *t;
const char *name;
char **s_args;
int i, len, nargs;
t = trussinfo->curthread;
name = t->cs.sc->name;
nargs = t->cs.nargs;
s_args = t->cs.s_args;
len = print_line_prefix(trussinfo);
len += fprintf(trussinfo->outfile, "%s(", name);
for (i = 0; i < nargs; i++) {
if (s_args[i] != NULL)
len += fprintf(trussinfo->outfile, "%s", s_args[i]);
else
len += fprintf(trussinfo->outfile,
"<missing argument>");
len += fprintf(trussinfo->outfile, "%s", i < (nargs - 1) ?
"," : "");
}
len += fprintf(trussinfo->outfile, ")");
for (i = 0; i < 6 - (len / 8); i++)
fprintf(trussinfo->outfile, "\t");
}
void
print_syscall_ret(struct trussinfo *trussinfo, int error, register_t *retval)
{
struct timespec timediff;
struct threadinfo *t;
struct syscall *sc;
t = trussinfo->curthread;
sc = t->cs.sc;
if (trussinfo->flags & COUNTONLY) {
timespecsub(&t->after, &t->before, &timediff);
timespecadd(&sc->time, &timediff, &sc->time);
sc->ncalls++;
if (error != 0)
sc->nerror++;
return;
}
print_syscall(trussinfo);
fflush(trussinfo->outfile);
if (retval == NULL) {
/*
* This system call resulted in the current thread's exit,
* so there is no return value or error to display.
*/
fprintf(trussinfo->outfile, "\n");
return;
}
if (error == ERESTART)
fprintf(trussinfo->outfile, " ERESTART\n");
else if (error == EJUSTRETURN)
fprintf(trussinfo->outfile, " EJUSTRETURN\n");
else if (error != 0) {
fprintf(trussinfo->outfile, " ERR#%d '%s'\n",
sysdecode_freebsd_to_abi_errno(t->proc->abi->abi, error),
strerror(error));
}
#ifndef __LP64__
else if (sc->ret_type == 2) {
off_t off;
#if _BYTE_ORDER == _LITTLE_ENDIAN
off = (off_t)retval[1] << 32 | retval[0];
#else
off = (off_t)retval[0] << 32 | retval[1];
#endif
fprintf(trussinfo->outfile, " = %jd (0x%jx)\n", (intmax_t)off,
(intmax_t)off);
}
#endif
else
fprintf(trussinfo->outfile, " = %jd (0x%jx)\n",
(intmax_t)retval[0], (intmax_t)retval[0]);
}
void
print_summary(struct trussinfo *trussinfo)
{
struct timespec total = {0, 0};
struct syscall *sc;
int ncall, nerror;
fprintf(trussinfo->outfile, "%-20s%15s%8s%8s\n",
"syscall", "seconds", "calls", "errors");
ncall = nerror = 0;
STAILQ_FOREACH(sc, &syscalls, entries)
if (sc->ncalls) {
fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n",
sc->name, (intmax_t)sc->time.tv_sec,
sc->time.tv_nsec, sc->ncalls, sc->nerror);
timespecadd(&total, &sc->time, &total);
ncall += sc->ncalls;
nerror += sc->nerror;
}
fprintf(trussinfo->outfile, "%20s%15s%8s%8s\n",
"", "-------------", "-------", "-------");
fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n",
"", (intmax_t)total.tv_sec, total.tv_nsec, ncall, nerror);
}
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