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freebsd-dev/usr.bin/truss/syscalls.c
John Baldwin caa449b635 Use PT_GET_SC_ARGS and PT_GET_SC_RET in truss. 
This removes all of the architecture-specific functions from truss.

A per-ABI structure is still needed to map syscall numbers to names
and FreeBSD errno values to ABI error values as well as hold syscall
counters.  However, the linker set of ABI structures is now replaced
with a simple table mapping ABI names to structures.  This approach
permits sharing the same ABI structure among separate names such as
i386 a.out and ELF binaries as well as ELF v1 vs ELF v2 for powerpc64.

A few differences are visible due to using PT_GET_SC_RET to fetch the
error value of a system call.  Note that ktrace/kdump have had the
"new" behaviors for a long time already:
- System calls that return with EJUSTRETURN or ERESTART will now be
  noticed and logged as such.  Previously sigreturn (which uses
  EJUSTRETURN) would report whatever random value was in the register
  holding errno from the previous system call for example.  Now it
  reports EJUSTRETURN.
- System calls that return errno as their error value such as
  posix_fallocate() and posix_fadvise() now report non-zero return
  values as errors instead of success with a non-zero return value.

Reviewed by:	kib
MFC after:	1 month
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D20963
2019-07-16 22:59:15 +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/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 = "_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 = "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_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 = "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 afater a 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 initalization 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, void *offset, void *buf, int len)
{
struct ptrace_io_desc iorequest;
iorequest.piod_op = PIOD_READ_D;
iorequest.piod_offs = 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, void *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 = (char *)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_sockaddr(FILE *fp, struct trussinfo *trussinfo, void *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 == NULL) {
fputs("NULL", fp);
return;
}
/* If the length is too small, just bail. */
if (len < sizeof(*sa)) {
fprintf(fp, "%p", arg);
return;
}
sa = calloc(1, len);
if (get_struct(pid, arg, sa, len) == -1) {
free(sa);
fprintf(fp, "%p", 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, void *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) {
fprintf(fp, "%p", 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) {
fprintf(fp, "%p", 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, 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 {
fprintf(fp, "%p", 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, msghdr->msg_control, cmsgbuf, len) == -1) {
fprintf(fp, "%p", 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);
}
/*
* 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, (void *)args[sc->offset], &val,
sizeof(val)) == 0)
fprintf(fp, "{ %u }", val);
else
fprintf(fp, "0x%lx", 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, (void*)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, (void*)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 {
fprintf(fp, "0x%lx", 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)) {
fprintf(fp, "0x%lx", 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) {
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
len = PAGE_SIZE - (addr & PAGE_MASK);
if (get_struct(pid, (void *)addr, u.buf, len) == -1) {
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
fputc('[', fp);
first = 1;
i = 0;
while (u.strarray[i] != NULL) {
string = get_string(pid, 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, (void *)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, (void *)args[sc->offset], &val,
sizeof(val)) == 0)
fprintf(fp, "{ 0x%jx }", (uintmax_t)val);
else
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case Ptr:
fprintf(fp, "0x%lx", args[sc->offset]);
break;
case Readlinkres: {
char *tmp2;
if (retval[0] == -1)
break;
tmp2 = get_string(pid, (void*)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, (void *)args[sc->offset], &ts,
sizeof(ts)) != -1)
fprintf(fp, "{ %jd.%09ld }", (intmax_t)ts.tv_sec,
ts.tv_nsec);
else
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case Timespec2: {
struct timespec ts[2];
const char *sep;
unsigned int i;
if (get_struct(pid, (void *)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
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case Timeval: {
struct timeval tv;
if (get_struct(pid, (void *)args[sc->offset], &tv, sizeof(tv))
!= -1)
fprintf(fp, "{ %jd.%06ld }", (intmax_t)tv.tv_sec,
tv.tv_usec);
else
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case Timeval2: {
struct timeval tv[2];
if (get_struct(pid, (void *)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
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case Itimerval: {
struct itimerval itv;
if (get_struct(pid, (void *)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
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case LinuxSockArgs:
{
struct linux_socketcall_args largs;
if (get_struct(pid, (void *)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
fprintf(fp, "0x%lx", 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, (void *)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 {
fprintf(fp, "0x%lx", 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, (void *)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
fprintf(fp, "0x%lx", 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, (void *)args[sc->offset], (void *)&ss,
sizeof(ss)) == -1) {
fprintf(fp, "0x%lx", 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 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, (void *)args[sc->offset + 1],
&len, sizeof(len)) == -1) {
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
} else
len = args[sc->offset + 1];
print_sockaddr(fp, trussinfo, (void *)args[sc->offset], len);
break;
}
case Sigaction: {
struct sigaction sa;
if (get_struct(pid, (void *)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
fprintf(fp, "0x%lx", 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, (void *)args[sc->offset],
ke, bytes) != -1) {
fputc('{', fp);
for (i = 0; i < numevents; i++) {
fputc(' ', fp);
print_kevent(fp, &ke[i]);
}
fputs(" }", fp);
} else {
fprintf(fp, "0x%lx", 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, (void *)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 {
fprintf(fp, "0x%lx", args[sc->offset]);
}
free(ke11);
break;
}
case Stat: {
struct stat st;
if (get_struct(pid, (void *)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 {
fprintf(fp, "0x%lx", args[sc->offset]);
}
break;
}
case Stat11: {
struct freebsd11_stat st;
if (get_struct(pid, (void *)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 {
fprintf(fp, "0x%lx", args[sc->offset]);
}
break;
}
case StatFs: {
unsigned int i;
struct statfs buf;
if (get_struct(pid, (void *)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
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case Rusage: {
struct rusage ru;
if (get_struct(pid, (void *)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
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case Rlimit: {
struct rlimit rl;
if (get_struct(pid, (void *)args[sc->offset], &rl, sizeof(rl))
!= -1) {
fprintf(fp, "{ cur=%ju,max=%ju }",
rl.rlim_cur, rl.rlim_max);
} else
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case ExitStatus: {
int status;
if (get_struct(pid, (void *)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
fprintf(fp, "0x%lx", 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 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, (void *)args[sc->offset],
(void *)utrace_addr, len) != -1)
print_utrace(fp, utrace_addr, len);
else
fprintf(fp, "0x%lx", 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, (void *)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
fprintf(fp, "0x%lx", 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, (void *)args[sc->offset], &rights,
sizeof(rights)) == -1) {
fprintf(fp, "0x%lx", 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, (void *)args[sc->offset], &rights,
sizeof(rights)) != -1) {
fputs("{ ", fp);
sysdecode_cap_rights(fp, &rights);
fputs(" }", fp);
} else
fprintf(fp, "0x%lx", 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, (void *)args[sc->offset], &sp,
sizeof(sp)) != -1)
fprintf(fp, "{ %d }", sp.sched_priority);
else
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case PSig: {
int sig;
if (get_struct(pid, (void *)args[sc->offset], &sig,
sizeof(sig)) == 0)
fprintf(fp, "{ %s }", strsig2(sig));
else
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case Siginfo: {
siginfo_t si;
if (get_struct(pid, (void *)args[sc->offset], &si,
sizeof(si)) != -1) {
fprintf(fp, "{ signo=%s", strsig2(si.si_signo));
decode_siginfo(fp, &si);
fprintf(fp, " }");
} else
fprintf(fp, "0x%lx", 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, (void *)args[sc->offset],
(int)args[sc->offset + 1]);
break;
case Sctpsndrcvinfo: {
struct sctp_sndrcvinfo info;
if (get_struct(pid, (void *)args[sc->offset],
&info, sizeof(struct sctp_sndrcvinfo)) == -1) {
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
print_sctp_sndrcvinfo(fp, sc->type & OUT, &info);
break;
}
case Msghdr: {
struct msghdr msghdr;
if (get_struct(pid, (void *)args[sc->offset],
&msghdr, sizeof(struct msghdr)) == -1) {
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
fputs("{", fp);
print_sockaddr(fp, trussinfo, msghdr.msg_name, msghdr.msg_namelen);
fprintf(fp, ",%d,", msghdr.msg_namelen);
print_iovec(fp, trussinfo, 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, (void *)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
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case CloudABIFileStat: {
cloudabi_filestat_t fsb;
if (get_struct(pid, (void *)args[sc->offset], &fsb, sizeof(fsb))
!= -1)
fprintf(fp, "{ %s, %ju }",
xlookup(cloudabi_filetype, fsb.st_filetype),
(uintmax_t)fsb.st_size);
else
fprintf(fp, "0x%lx", 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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