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freebsd-skq/usr.bin/truss/syscalls.c
jhb 27ec61a437 Move mksubr from kdump into libsysdecode. 
Restructure this script so that it generates a header of tables instead
of a source file.  The tables are included in a flags.c source file which
provides functions to decode various system call arguments.

For functions that decode an enumeration, the function returns a pointer
to a string for known values and NULL for unknown values.

For functions that do more complex decoding (typically of a bitmask), the
function accepts a pointer to a FILE object (open_memstream() can be used
as a string builder) to which decoded values are written.  If the
function operates on a bitmask, the function returns true if any bits
were decoded or false if the entire value was valid.  Additionally, the
third argument accepts a pointer to a value to which any undecoded bits
are stored.  This pointer can be NULL if the caller doesn't care about
remaining bits.

Convert kdump over to using decoder functions from libsysdecode instead of
mksubr.  truss also uses decoders from libsysdecode instead of private
lookup tables, though lookup tables for objects not decoded by kdump remain
in truss for now.  Eventually most of these tables should move into
libsysdecode as the automated table generation approach from mksubr is
less stale than the static tables in truss.

Some changes have been made to truss and kdump output:
- The flags passed to open() are now properly decoded in that one of
  O_RDONLY, O_RDWR, O_WRONLY, or O_EXEC is always included in a decoded
  mask.
- Optional arguments to open(), openat(), and fcntl() are only printed
  in kdump if they exist (e.g. the mode is only printed for open() if
  O_CREAT is set in the flags).
- Print argument to F_GETLK/SETLK/SETLKW in kdump as a pointer, not int.
- Include all procctl() commands.
- Correctly decode pipe2() flags in truss by not assuming full
  open()-like flags with O_RDONLY, etc.
- Decode file flags passed to *chflags() as file flags (UF_* and SF_*)
  rather than as a file mode.
- Fix decoding of quotactl() commands by splitting out the two command
  components instead of assuming the raw command value matches the
  primary command component.

In addition, truss and kdump now build without triggering any warnings.
All of the sysdecode manpages now include the required headers in the
synopsis.

Reviewed by:	kib (several older versions), wblock (manpages)
MFC after:	2 months
Differential Revision:	https://reviews.freebsd.org/D7847
2016-10-17 22:37:07 +00:00

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/*
* 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/types.h>
#include <sys/event.h>
#include <sys/ioccom.h>
#include <sys/mount.h>
#include <sys/ptrace.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <machine/sysarch.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <poll.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"
/* 64-bit alignment on 32-bit platforms. */
#if !defined(__LP64__) && defined(__powerpc__)
#define QUAD_ALIGN 1
#else
#define QUAD_ALIGN 0
#endif
/* Number of slots needed for a 64-bit argument. */
#ifdef __LP64__
#define QUAD_SLOTS 1
#else
#define QUAD_SLOTS 2
#endif
/*
* This should probably be in its own file, sorted alphabetically.
*/
static struct syscall decoded_syscalls[] = {
/* Native ABI */
{ .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 }, { Int, 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 = "chdir", .ret_type = 1, .nargs = 1,
.args = { { Name, 0 } } },
{ .name = "chflags", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Hex, 1 } } },
{ .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 = "connect", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Int, 2 } } },
{ .name = "connectat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Int, 1 }, { Sockaddr | IN, 2 },
{ Int, 3 } } },
{ .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 = "faccessat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name | IN, 1 }, { Accessmode, 2 },
{ Atflags, 3 } } },
{ .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 = "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 = "ftruncate", .ret_type = 1, .nargs = 2,
.args = { { Int | IN, 0 }, { QuadHex | IN, 1 + QUAD_ALIGN } } },
{ .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 = "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 = "getrlimit", .ret_type = 1, .nargs = 2,
.args = { { Resource, 0 }, { Rlimit | OUT, 1 } } },
{ .name = "getrusage", .ret_type = 1, .nargs = 2,
.args = { { Int, 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 = "gettimeofday", .ret_type = 1, .nargs = 2,
.args = { { Timeval | OUT, 0 }, { Ptr, 1 } } },
{ .name = "ioctl", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Ioctl, 1 }, { Hex, 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 = "kldunload", .ret_type = 1, .nargs = 1,
.args = { { Int, 0 } } },
{ .name = "kse_release", .ret_type = 0, .nargs = 1,
.args = { { Timespec, 0 } } },
{ .name = "lchflags", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Hex, 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 = "lseek", .ret_type = 2, .nargs = 3,
.args = { { Int, 0 }, { QuadHex, 1 + QUAD_ALIGN },
{ Whence, 1 + QUAD_SLOTS + QUAD_ALIGN } } },
{ .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 = "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 = "mmap", .ret_type = 1, .nargs = 6,
.args = { { Ptr, 0 }, { Int, 1 }, { Mprot, 2 }, { Mmapflags, 3 },
{ Int, 4 }, { QuadHex, 5 + QUAD_ALIGN } } },
{ .name = "modfind", .ret_type = 1, .nargs = 1,
.args = { { Name | IN, 0 } } },
{ .name = "mount", .ret_type = 1, .nargs = 4,
.args = { { Name, 0 }, { Name, 1 }, { Int, 2 }, { Ptr, 3 } } },
{ .name = "mprotect", .ret_type = 1, .nargs = 3,
.args = { { Ptr, 0 }, { Int, 1 }, { Mprot, 2 } } },
{ .name = "munmap", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Int, 1 } } },
{ .name = "nanosleep", .ret_type = 1, .nargs = 1,
.args = { { Timespec, 0 } } },
{ .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_openpt", .ret_type = 1, .nargs = 1,
.args = { { Open, 0 } } },
{ .name = "procctl", .ret_type = 1, .nargs = 4,
.args = { { Idtype, 0 }, { Quad, 1 + QUAD_ALIGN },
{ Procctl, 1 + QUAD_ALIGN + QUAD_SLOTS },
{ Ptr, 2 + QUAD_ALIGN + QUAD_SLOTS } } },
{ .name = "read", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { BinString | OUT, 1 }, { Int, 2 } } },
{ .name = "readlink", .ret_type = 1, .nargs = 3,
.args = { { Name, 0 }, { Readlinkres | OUT, 1 }, { Int, 2 } } },
{ .name = "readlinkat", .ret_type = 1, .nargs = 4,
.args = { { Atfd, 0 }, { Name, 1 }, { Readlinkres | OUT, 2 },
{ Int, 3 } } },
{ .name = "recvfrom", .ret_type = 1, .nargs = 6,
.args = { { Int, 0 }, { BinString | OUT, 1 }, { Int, 2 }, { Hex, 3 },
{ Sockaddr | OUT, 4 }, { Ptr | OUT, 5 } } },
{ .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 = "select", .ret_type = 1, .nargs = 5,
.args = { { Int, 0 }, { Fd_set, 1 }, { Fd_set, 2 }, { Fd_set, 3 },
{ Timeval, 4 } } },
{ .name = "sendto", .ret_type = 1, .nargs = 6,
.args = { { Int, 0 }, { BinString | IN, 1 }, { Int, 2 }, { Hex, 3 },
{ Sockaddr | IN, 4 }, { Ptr | IN, 5 } } },
{ .name = "setitimer", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Itimerval, 1 }, { Itimerval | OUT, 2 } } },
{ .name = "setrlimit", .ret_type = 1, .nargs = 2,
.args = { { Resource, 0 }, { Rlimit | IN, 1 } } },
{ .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 }, { Ptr, 1 }, { Timespec | IN, 2 } } },
{ .name = "sigwait", .ret_type = 1, .nargs = 2,
.args = { { Sigset | IN, 0 }, { Ptr, 1 } } },
{ .name = "sigwaitinfo", .ret_type = 1, .nargs = 2,
.args = { { Sigset | IN, 0 }, { Ptr, 1 } } },
{ .name = "socket", .ret_type = 1, .nargs = 3,
.args = { { Sockdomain, 0 }, { Socktype, 1 }, { Int, 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 = "truncate", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { QuadHex | IN, 1 + QUAD_ALIGN } } },
#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 }, { Int, 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 + QUAD_ALIGN },
{ ExitStatus | OUT, 1 + QUAD_ALIGN + QUAD_SLOTS },
{ Waitoptions, 2 + QUAD_ALIGN + QUAD_SLOTS },
{ Rusage | OUT, 3 + QUAD_ALIGN + QUAD_SLOTS },
{ Ptr, 4 + QUAD_ALIGN + QUAD_SLOTS } } },
{ .name = "write", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { BinString | 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 }, { Int, 2 } } },
{ .name = "linux_socketcall", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { LinuxSockArgs, 1 } } },
{ .name = "linux_stat64", .ret_type = 1, .nargs = 3,
.args = { { Name | IN, 0 }, { Ptr | OUT, 1 }, { Ptr | IN, 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 },
{ ClouduABIFDSFlags, 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_lock", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Int, 1 } } },
{ .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_unlock", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Int, 1 } } },
{ .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_accept", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CloudABISockStat | OUT, 1 } } },
{ .name = "cloudabi_sys_sock_bind", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { BinString | IN, 2 } } },
{ .name = "cloudabi_sys_sock_connect", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { BinString | IN, 2 } } },
{ .name = "cloudabi_sys_sock_listen", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Int, 1 } } },
{ .name = "cloudabi_sys_sock_shutdown", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CloudABISDFlags, 1 } } },
{ .name = "cloudabi_sys_sock_stat_get", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { CloudABISockStat | OUT, 1 },
{ CloudABISSFlags, 2 } } },
{ .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 kevent_filters[] = {
X(EVFILT_READ) X(EVFILT_WRITE) X(EVFILT_AIO) X(EVFILT_VNODE)
X(EVFILT_PROC) X(EVFILT_SIGNAL) X(EVFILT_TIMER)
X(EVFILT_PROCDESC) X(EVFILT_FS) X(EVFILT_LIO) X(EVFILT_USER)
X(EVFILT_SENDFILE) XEND
};
static struct xlat kevent_flags[] = {
X(EV_ADD) X(EV_DELETE) X(EV_ENABLE) X(EV_DISABLE) X(EV_ONESHOT)
X(EV_CLEAR) X(EV_RECEIPT) X(EV_DISPATCH) X(EV_FORCEONESHOT)
X(EV_DROP) X(EV_FLAG1) X(EV_ERROR) X(EV_EOF) XEND
};
static struct xlat kevent_user_ffctrl[] = {
X(NOTE_FFNOP) X(NOTE_FFAND) X(NOTE_FFOR) X(NOTE_FFCOPY)
XEND
};
static struct xlat kevent_rdwr_fflags[] = {
X(NOTE_LOWAT) X(NOTE_FILE_POLL) XEND
};
static struct xlat kevent_vnode_fflags[] = {
X(NOTE_DELETE) X(NOTE_WRITE) X(NOTE_EXTEND) X(NOTE_ATTRIB)
X(NOTE_LINK) X(NOTE_RENAME) X(NOTE_REVOKE) XEND
};
static struct xlat kevent_proc_fflags[] = {
X(NOTE_EXIT) X(NOTE_FORK) X(NOTE_EXEC) X(NOTE_TRACK) X(NOTE_TRACKERR)
X(NOTE_CHILD) XEND
};
static struct xlat kevent_timer_fflags[] = {
X(NOTE_SECONDS) X(NOTE_MSECONDS) X(NOTE_USECONDS) X(NOTE_NSECONDS)
XEND
};
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 pathconf_arg[] = {
X(_PC_LINK_MAX) X(_PC_MAX_CANON) X(_PC_MAX_INPUT)
X(_PC_NAME_MAX) X(_PC_PATH_MAX) X(_PC_PIPE_BUF)
X(_PC_CHOWN_RESTRICTED) X(_PC_NO_TRUNC) X(_PC_VDISABLE)
X(_PC_ASYNC_IO) X(_PC_PRIO_IO) X(_PC_SYNC_IO)
X(_PC_ALLOC_SIZE_MIN) X(_PC_FILESIZEBITS)
X(_PC_REC_INCR_XFER_SIZE) X(_PC_REC_MAX_XFER_SIZE)
X(_PC_REC_MIN_XFER_SIZE) X(_PC_REC_XFER_ALIGN)
X(_PC_SYMLINK_MAX) X(_PC_ACL_EXTENDED) X(_PC_ACL_PATH_MAX)
X(_PC_CAP_PRESENT) X(_PC_INF_PRESENT) X(_PC_MAC_PRESENT)
X(_PC_ACL_NFS4) X(_PC_MIN_HOLE_SIZE) XEND
};
static struct xlat at_flags[] = {
X(AT_EACCESS) X(AT_SYMLINK_NOFOLLOW) X(AT_SYMLINK_FOLLOW)
X(AT_REMOVEDIR) XEND
};
static struct xlat sysarch_ops[] = {
#if defined(__i386__) || defined(__amd64__)
X(I386_GET_LDT) X(I386_SET_LDT) X(I386_GET_IOPERM) X(I386_SET_IOPERM)
X(I386_VM86) X(I386_GET_FSBASE) X(I386_SET_FSBASE) X(I386_GET_GSBASE)
X(I386_SET_GSBASE) X(I386_GET_XFPUSTATE) X(AMD64_GET_FSBASE)
X(AMD64_SET_FSBASE) X(AMD64_GET_GSBASE) X(AMD64_SET_GSBASE)
X(AMD64_GET_XFPUSTATE)
#endif
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_errno[] = {
X(E2BIG) X(EACCES) X(EADDRINUSE) X(EADDRNOTAVAIL)
X(EAFNOSUPPORT) X(EAGAIN) X(EALREADY) X(EBADF) X(EBADMSG)
X(EBUSY) X(ECANCELED) X(ECHILD) X(ECONNABORTED) X(ECONNREFUSED)
X(ECONNRESET) X(EDEADLK) X(EDESTADDRREQ) X(EDOM) X(EDQUOT)
X(EEXIST) X(EFAULT) X(EFBIG) X(EHOSTUNREACH) X(EIDRM) X(EILSEQ)
X(EINPROGRESS) X(EINTR) X(EINVAL) X(EIO) X(EISCONN) X(EISDIR)
X(ELOOP) X(EMFILE) X(EMLINK) X(EMSGSIZE) X(EMULTIHOP)
X(ENAMETOOLONG) X(ENETDOWN) X(ENETRESET) X(ENETUNREACH)
X(ENFILE) X(ENOBUFS) X(ENODEV) X(ENOENT) X(ENOEXEC) X(ENOLCK)
X(ENOLINK) X(ENOMEM) X(ENOMSG) X(ENOPROTOOPT) X(ENOSPC)
X(ENOSYS) X(ENOTCONN) X(ENOTDIR) X(ENOTEMPTY) X(ENOTRECOVERABLE)
X(ENOTSOCK) X(ENOTSUP) X(ENOTTY) X(ENXIO) X(EOVERFLOW)
X(EOWNERDEAD) X(EPERM) X(EPIPE) X(EPROTO) X(EPROTONOSUPPORT)
X(EPROTOTYPE) X(ERANGE) X(EROFS) X(ESPIPE) X(ESRCH) X(ESTALE)
X(ETIMEDOUT) X(ETXTBSY) X(EXDEV) X(ENOTCAPABLE)
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_FIFO) X(FILETYPE_POLL) X(FILETYPE_PROCESS)
X(FILETYPE_REGULAR_FILE) X(FILETYPE_SHARED_MEMORY)
X(FILETYPE_SOCKET_DGRAM) X(FILETYPE_SOCKET_SEQPACKET)
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_sa_family[] = {
X(AF_UNSPEC) X(AF_INET) X(AF_INET6) X(AF_UNIX)
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_ssflags[] = {
X(SOCKSTAT_CLEAR_ERROR)
XEND
};
static struct xlat cloudabi_ssstate[] = {
X(SOCKSTATE_ACCEPTCONN)
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);
}
void
init_syscalls(void)
{
struct syscall *sc;
STAILQ_INIT(&syscalls);
for (sc = decoded_syscalls; sc->name != NULL; sc++)
STAILQ_INSERT_HEAD(&syscalls, sc, 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(const char *name, int nargs)
{
struct syscall *sc;
int i;
if (name == NULL)
return (NULL);
STAILQ_FOREACH(sc, &syscalls, entries)
if (strcmp(name, sc->name) == 0)
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 = strdup(name);
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);
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, int input)
{
switch (ke->filter) {
case EVFILT_READ:
case EVFILT_WRITE:
case EVFILT_VNODE:
case EVFILT_PROC:
case EVFILT_TIMER:
case EVFILT_PROCDESC:
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, ",%s,%s,", xlookup(kevent_filters, ke->filter),
xlookup_bits(kevent_flags, ke->flags));
switch (ke->filter) {
case EVFILT_READ:
case EVFILT_WRITE:
fputs(xlookup_bits(kevent_rdwr_fflags, ke->fflags), fp);
break;
case EVFILT_VNODE:
fputs(xlookup_bits(kevent_vnode_fflags, ke->fflags), fp);
break;
case EVFILT_PROC:
case EVFILT_PROCDESC:
fputs(xlookup_bits(kevent_proc_fflags, ke->fflags), fp);
break;
case EVFILT_TIMER:
fputs(xlookup_bits(kevent_timer_fflags, ke->fflags), fp);
break;
case EVFILT_USER: {
int ctrl, data;
ctrl = ke->fflags & NOTE_FFCTRLMASK;
data = ke->fflags & NOTE_FFLAGSMASK;
if (input) {
fputs(xlookup(kevent_user_ffctrl, ctrl), fp);
if (ke->fflags & NOTE_TRIGGER)
fputs("|NOTE_TRIGGER", fp);
if (data != 0)
fprintf(fp, "|%#x", data);
} else {
fprintf(fp, "%#x", data);
}
break;
}
default:
fprintf(fp, "%#x", ke->fflags);
}
fprintf(fp, ",%p,%p", (void *)ke->data, (void *)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, " }");
}
/*
* 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, long *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 LongHex:
fprintf(fp, "0x%lx", args[sc->offset]);
break;
case Long:
fprintf(fp, "%ld", args[sc->offset]);
break;
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 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 Pathconf:
fputs(xlookup(pathconf_arg, args[sc->offset]), fp);
break;
case Rforkflags:
print_mask_arg(sysdecode_rfork_flags, fp, args[sc->offset]);
break;
case Sockaddr: {
char addr[64];
struct sockaddr_in *lsin;
struct sockaddr_in6 *lsin6;
struct sockaddr_un *sun;
struct sockaddr *sa;
socklen_t len;
u_char *q;
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];
/* If the length is too small, just bail. */
if (len < sizeof(*sa)) {
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
sa = calloc(1, len);
if (get_struct(pid, (void *)args[sc->offset], sa, len) == -1) {
free(sa);
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
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);
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], sc->offset == 1);
}
fputs(" }", fp);
} else {
fprintf(fp, "0x%lx", args[sc->offset]);
}
free(ke);
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 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:
fputs(xlookup_bits(at_flags, args[sc->offset]), fp);
break;
case Accessmode:
print_mask_arg(sysdecode_access_mode, fp, args[sc->offset]);
break;
case Sysarch:
fputs(xlookup(sysarch_ops, args[sc->offset]), 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, "{ %ld, %ld }", retval[0], 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 CloudABIAdvice:
fputs(xlookup(cloudabi_advice, args[sc->offset]), fp);
break;
case CloudABIClockID:
fputs(xlookup(cloudabi_clockid, args[sc->offset]), fp);
break;
case ClouduABIFDSFlags:
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 CloudABISockStat: {
cloudabi_sockstat_t ss;
if (get_struct(pid, (void *)args[sc->offset], &ss, sizeof(ss))
!= -1) {
fprintf(fp, "{ %s, ", xlookup(
cloudabi_sa_family, ss.ss_sockname.sa_family));
fprintf(fp, "%s, ", xlookup(
cloudabi_sa_family, ss.ss_peername.sa_family));
fprintf(fp, "%s, ", xlookup(
cloudabi_errno, ss.ss_error));
fprintf(fp, "%s }", xlookup_bits(
cloudabi_ssstate, ss.ss_state));
} else
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case CloudABISSFlags:
fputs(xlookup_bits(cloudabi_ssflags, 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.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 errorp, long *retval)
{
struct timespec timediff;
struct threadinfo *t;
struct syscall *sc;
int error;
t = trussinfo->curthread;
sc = t->cs.sc;
if (trussinfo->flags & COUNTONLY) {
timespecsubt(&t->after, &t->before, &timediff);
timespecadd(&sc->time, &timediff, &sc->time);
sc->ncalls++;
if (errorp)
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 (errorp) {
error = sysdecode_abi_to_freebsd_errno(t->proc->abi->abi,
retval[0]);
fprintf(trussinfo->outfile, " ERR#%ld '%s'\n", retval[0],
error == INT_MAX ? "Unknown 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, " = %ld (0x%lx)\n", retval[0],
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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