| kvm.3 (127438) | kvm.3 (131504) |
|---|---|
| 1.\" Copyright (c) 1992, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software developed by the Computer Systems 5.\" Engineering group at Lawrence Berkeley Laboratory under DARPA contract 6.\" BG 91-66 and contributed to Berkeley. 7.\" 8.\" Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" @(#)kvm.3 8.1 (Berkeley) 6/4/93 | 1.\" Copyright (c) 1992, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software developed by the Computer Systems 5.\" Engineering group at Lawrence Berkeley Laboratory under DARPA contract 6.\" BG 91-66 and contributed to Berkeley. 7.\" 8.\" Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" @(#)kvm.3 8.1 (Berkeley) 6/4/93 |
| 37.\" $FreeBSD: head/lib/libkvm/kvm.3 127438 2004-03-26 08:03:53Z ru $ | 37.\" $FreeBSD: head/lib/libkvm/kvm.3 131504 2004-07-02 23:52:20Z ru $ |
| 38.\" 39.Dd January 29, 2004 40.Dt KVM 3 41.Os 42.Sh NAME 43.Nm kvm 44.Nd kernel memory interface 45.Sh LIBRARY --- 13 unchanged lines hidden (view full) --- 59Memory can be read and written, kernel symbol addresses can be 60looked up efficiently, and information about user processes can 61be gathered. 62.Pp 63The 64.Fn kvm_open 65function is first called to obtain a descriptor for all subsequent calls. 66.Sh COMPATIBILITY | 38.\" 39.Dd January 29, 2004 40.Dt KVM 3 41.Os 42.Sh NAME 43.Nm kvm 44.Nd kernel memory interface 45.Sh LIBRARY --- 13 unchanged lines hidden (view full) --- 59Memory can be read and written, kernel symbol addresses can be 60looked up efficiently, and information about user processes can 61be gathered. 62.Pp 63The 64.Fn kvm_open 65function is first called to obtain a descriptor for all subsequent calls. 66.Sh COMPATIBILITY |
| 67The kvm interface was first introduced in SunOS. A considerable | 67The kvm interface was first introduced in SunOS. 68A considerable |
| 68number of programs have been developed that use this interface, 69making backward compatibility highly desirable. 70In most respects, the Sun kvm interface is consistent and clean. 71Accordingly, the generic portion of the interface (i.e., 72.Fn kvm_open , 73.Fn kvm_close , 74.Fn kvm_read , 75.Fn kvm_write , 76and 77.Fn kvm_nlist ) 78has been incorporated into the 79.Bx | 69number of programs have been developed that use this interface, 70making backward compatibility highly desirable. 71In most respects, the Sun kvm interface is consistent and clean. 72Accordingly, the generic portion of the interface (i.e., 73.Fn kvm_open , 74.Fn kvm_close , 75.Fn kvm_read , 76.Fn kvm_write , 77and 78.Fn kvm_nlist ) 79has been incorporated into the 80.Bx |
| 80interface. Indeed, many kvm | 81interface. 82Indeed, many kvm |
| 81applications (i.e., debuggers and statistical monitors) use only 82this subset of the interface. 83.Pp | 83applications (i.e., debuggers and statistical monitors) use only 84this subset of the interface. 85.Pp |
| 84The process interface was not kept. This is not a portability | 86The process interface was not kept. 87This is not a portability |
| 85issue since any code that manipulates processes is inherently 86machine dependent. 87.Pp 88Finally, the Sun kvm error reporting semantics are poorly defined. 89The library can be configured either to print errors to 90.Dv stderr 91automatically, 92or to print no error messages at all. --- 25 unchanged lines hidden --- | 88issue since any code that manipulates processes is inherently 89machine dependent. 90.Pp 91Finally, the Sun kvm error reporting semantics are poorly defined. 92The library can be configured either to print errors to 93.Dv stderr 94automatically, 95or to print no error messages at all. --- 25 unchanged lines hidden --- |