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freebsd-skq/usr.bin/truss/syscalls.c
Mateusz Guzik 0573d0a9b8 vfs: add realpathat syscall 
realpath(3) is used a lot e.g., by clang and is a major source of getcwd
and fstatat calls. This can be done more efficiently in the kernel.

This works by performing a regular lookup while saving the name and found
parent directory. If the terminal vnode is a directory we can resolve it using
usual means. Otherwise we can use the name saved by lookup and resolve the
parent.

See the review for sample syscall counts.

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D23574
2020-02-20 16:58:19 +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 = "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, int len)
{
int i;
for (i = 0; i < len; i++)
fprintf(fp, ".%d", oid[i]);
}
/*
* 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], qoid[CTL_MAXNAME + 2];
size_t i;
int 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");
break;
case CTL_SYSCTL_OIDFMT:
fprintf(fp, "oidfmt");
print_sysctl_oid(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_OIDDESCR:
fprintf(fp, "oiddescr");
print_sysctl_oid(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_OIDLABEL:
fprintf(fp, "oidlabel");
print_sysctl_oid(fp, oid + 2, len - 2);
break;
default:
print_sysctl_oid(fp, oid + 1, len - 1);
}
} else {
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, qoid + 2, len);
else
fprintf(fp, "%s", name);
}
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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