a5f14abfd2
A new sysdecode_syscallname() function accepts a system call code and returns a string of the corresponding name (or NULL if the code is unknown). To support different process ABIs, the new function accepts a value from a new sysdecode_abi enum as its first argument to select the ABI in use. Current ABIs supported include FREEBSD (native binaries), FREEBSD32, LINUX, LINUX32, and CLOUDABI64. Note that not all ABIs are supported by all platforms. In general, a given ABI is only supported if a platform can execute binaries for that ABI. To simplify the implementation, libsysdecode's build reuses the existing pre-generated files from the kernel source tree rather than duplicating new copies of said files during the build. kdump(1) and truss(1) now use these functions to map system call identifiers to names. For kdump(1), a new 'syscallname()' function consolidates duplicated code from ktrsyscall() and ktrsyscallret(). The Linux ABI no longer requires custom handling for ktrsyscall() and linux_ktrsyscall() has been removed as a result. Reviewed by: bdrewery Differential Revision: https://reviews.freebsd.org/D4823
75 lines
2.4 KiB
Groff
75 lines
2.4 KiB
Groff
.\"
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.\" Copyright (c) 2015 John Baldwin <jhb@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 24, 2016
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.Dt SYSDECODE 3
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.Os
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.Sh NAME
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.Nm sysdecode
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.Nd system argument decoding library
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.Sh LIBRARY
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.Lb libsysdecode
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.Sh DESCRIPTION
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The
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.Nm
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library includes several functions that provide descriptive names of
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values associated with system calls.
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.Ss Supported ABIs
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Some functions in this library provide ABI-specific descriptions.
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The supported ABIs are named by the
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.Vt enum sysdecode_abi
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enumeration.
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.Pp
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.Bl -tag -width "Li UNKNOWN_ABI" -compact
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.It Li FREEBSD
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Native FreeBSD binaries.
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Supported on all platforms.
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.It Li FREEBSD32
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32-bit FreeBSD binaries.
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Supported on amd64 and powerpc64.
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.It Li LINUX
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Linux binaries of the same platform.
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Supported on amd64 and i386.
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.It Li LINUX32
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32-bit Linux binaries.
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Supported on amd64.
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.It Li CLOUDABI64
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64-bit CloudABI binaries.
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Supported on aarch64 and amd64.
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.It Li UNKNOWN_ABI
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A placeholder for use when the ABI is not known.
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.El
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.Sh SEE ALSO
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.Xr sysdecode_ioctlname 3 ,
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.Xr sysdecode_syscallnames 3 ,
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.Xr sysdecode_utrace 3
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.Sh HISTORY
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The
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.Nm
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library first appeared in
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.Fx 11.0 .
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