mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-07-26 02:38:30 +08:00
Add kvm header file - stubbed for RTEMS
This is only used to read dumps with a symbol table. We can use sysctlbyname().
This commit is contained in:
Joel Sherrill
parent
2cf245e32d
commit
44ee042822
@ -11,6 +11,7 @@ CFLAGS += -Ilib/libc/resolv
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CFLAGS += -Ilib/netgraph
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CFLAGS += -Ilib/libmemstat
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CFLAGS += -Ilib/libutil
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CFLAGS += -Ilib/libkvm
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CFLAGS += -Isys
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CFLAGS += -Ilocal
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# XXX hack to find rpc
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@ -164,7 +165,6 @@ C_FILES += rtems/rtems-uthread_kevent.c
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C_FILES += rtems/rtems-uthread_kqueue.c
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C_FILES += rtems/rtems-shell.c
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# ping command sources
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C_FILES += commands/sbin/ping/ping.c
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C_FILES += commands/sbin/ping6/ping6.c
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@ -231,13 +231,14 @@ C_FILES += commands/usr.bin/netstat/ipsec.c
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# C_FILES += commands/usr.bin/netstat/ipx.c
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C_FILES += commands/usr.bin/netstat/main.c
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# XXX does not compile yet
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# C_FILES += commands/usr.bin/netstat/mbuf.c
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C_FILES += commands/usr.bin/netstat/mbuf.c
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C_FILES += commands/usr.bin/netstat/mroute6.c
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C_FILES += commands/usr.bin/netstat/mroute.c
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# Disable netgraph support - this is a long thread to pull
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# C_FILES += commands/usr.bin/netstat/netgraph.c
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C_FILES += commands/usr.bin/netstat/pfkey.c
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C_FILES += commands/usr.bin/netstat/route.c
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# Actually just route.c in FreeBSD
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C_FILES += commands/usr.bin/netstat/netstat_route.c
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C_FILES += commands/usr.bin/netstat/sctp.c
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C_FILES += commands/usr.bin/netstat/unix.c
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120
freebsd-userspace/lib/libkvm/kvm.3
Normal file
120
freebsd-userspace/lib/libkvm/kvm.3
Normal file
@ -0,0 +1,120 @@
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.\" Copyright (c) 1992, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software developed by the Computer Systems
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.\" Engineering group at Lawrence Berkeley Laboratory under DARPA contract
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.\" BG 91-66 and contributed to Berkeley.
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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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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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.\" @(#)kvm.3 8.1 (Berkeley) 6/4/93
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.\" $FreeBSD$
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.\"
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.Dd April 25, 2010
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.Dt KVM 3
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.Os
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.Sh NAME
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.Nm kvm
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.Nd kernel memory interface
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.Sh LIBRARY
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.Lb libkvm
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.Sh DESCRIPTION
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The
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.Nm
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library provides a uniform interface for accessing kernel virtual memory
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images, including live systems and crash dumps.
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Access to live systems is via
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.Xr sysctl 3
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for some functions, and
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.Xr mem 4
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and
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.Xr kmem 4
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for other functions,
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while crash dumps can be examined via the core file generated by
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.Xr savecore 8 .
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The interface behaves similarly in both cases.
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Memory can be read and written, kernel symbol addresses can be
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looked up efficiently, and information about user processes can
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be gathered.
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.Pp
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The
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.Fn kvm_open
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function is first called to obtain a descriptor for all subsequent calls.
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.Sh COMPATIBILITY
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The kvm interface was first introduced in SunOS.
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A considerable
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number of programs have been developed that use this interface,
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making backward compatibility highly desirable.
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In most respects, the Sun kvm interface is consistent and clean.
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Accordingly, the generic portion of the interface (i.e.,
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.Fn kvm_open ,
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.Fn kvm_close ,
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.Fn kvm_read ,
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.Fn kvm_write ,
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and
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.Fn kvm_nlist )
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has been incorporated into the
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.Bx
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interface.
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Indeed, many kvm
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applications (i.e., debuggers and statistical monitors) use only
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this subset of the interface.
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.Pp
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The process interface was not kept.
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This is not a portability
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issue since any code that manipulates processes is inherently
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machine dependent.
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.Pp
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Finally, the Sun kvm error reporting semantics are poorly defined.
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The library can be configured either to print errors to
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.Dv stderr
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automatically,
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or to print no error messages at all.
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In the latter case, the nature of the error cannot be determined.
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To overcome this, the
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.Bx
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interface includes a
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routine,
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.Xr kvm_geterr 3 ,
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to return (not print out) the error message
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corresponding to the most recent error condition on the
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given descriptor.
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.Sh SEE ALSO
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.Xr kvm_close 3 ,
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.Xr kvm_getargv 3 ,
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.Xr kvm_getenvv 3 ,
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.Xr kvm_geterr 3 ,
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.Xr kvm_getfiles 3 ,
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.Xr kvm_getloadavg 3 ,
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.Xr kvm_getprocs 3 ,
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.Xr kvm_getswapinfo 3 ,
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.Xr kvm_nlist 3 ,
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.Xr kvm_open 3 ,
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.Xr kvm_openfiles 3 ,
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.Xr kvm_read 3 ,
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.Xr kvm_write 3 ,
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.Xr sysctl 3 ,
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.Xr kmem 4 ,
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.Xr mem 4
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94
freebsd-userspace/lib/libkvm/kvm.h
Normal file
94
freebsd-userspace/lib/libkvm/kvm.h
Normal file
@ -0,0 +1,94 @@
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/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. 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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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)kvm.h 8.1 (Berkeley) 6/2/93
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* $FreeBSD$
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*/
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#ifndef _KVM_H_
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#define _KVM_H_
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#include <sys/cdefs.h>
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#include <sys/_types.h>
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#include <nlist.h>
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/* Default version symbol. */
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#define VRS_SYM "_version"
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#define VRS_KEY "VERSION"
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#ifndef _SIZE_T_DECLARED
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typedef __size_t size_t;
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#define _SIZE_T_DECLARED
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#endif
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#ifndef _SSIZE_T_DECLARED
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typedef __ssize_t ssize_t;
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#define _SSIZE_T_DECLARED
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#endif
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typedef struct __kvm kvm_t;
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struct kinfo_proc;
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struct proc;
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struct kvm_swap {
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char ksw_devname[32];
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int ksw_used;
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int ksw_total;
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int ksw_flags;
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int ksw_reserved1;
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int ksw_reserved2;
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};
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#define SWIF_DEV_PREFIX 0x0002
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__BEGIN_DECLS
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int kvm_close(kvm_t *);
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char **kvm_getargv(kvm_t *, const struct kinfo_proc *, int);
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int kvm_getcptime(kvm_t *, long *);
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char **kvm_getenvv(kvm_t *, const struct kinfo_proc *, int);
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char *kvm_geterr(kvm_t *);
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char *kvm_getfiles(kvm_t *, int, int, int *);
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int kvm_getloadavg(kvm_t *, double [], int);
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int kvm_getmaxcpu(kvm_t *);
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void *kvm_getpcpu(kvm_t *, int);
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struct kinfo_proc *
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kvm_getprocs(kvm_t *, int, int, int *);
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int kvm_getswapinfo(kvm_t *, struct kvm_swap *, int, int);
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int kvm_nlist(kvm_t *, struct nlist *);
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kvm_t *kvm_open
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(const char *, const char *, const char *, int, const char *);
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kvm_t *kvm_openfiles
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(const char *, const char *, const char *, int, char *);
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ssize_t kvm_read(kvm_t *, unsigned long, void *, size_t);
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ssize_t kvm_uread
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(kvm_t *, struct kinfo_proc *, unsigned long, char *, size_t);
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ssize_t kvm_write(kvm_t *, unsigned long, const void *, size_t);
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__END_DECLS
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#endif /* !_KVM_H_ */
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