src/lib/libkvm/kvm_open.3, branch release/14.3.0-p12

Remove $FreeBSD$: one-line nroff pattern

2023-08-16T17:55:15Z

Remove /^\.\\"\s*\$FreeBSD\$$\n/

Document 7f911abe's new functions came in 11.0

2021-12-16T00:18:59Z

Document that the 7f911abe "Add support to libkvm for reading vmcores from other architectures." added functions appeared first in FreeBSD 11.0.

Handle kd == NULL gracefully with kvm_close(3)

2017-03-20T18:28:22Z

Don't segfault in kvm_close(3) if provided a NULL pointer. Instead, return -1 and set errno to EINVAL. Document this new behavior explicitly. MFC after: 1 week Reviewed by: vangyzen Sponsored by: Dell EMC Isilon Differential Revision: D10065

kvm_open2(3): remove '*' when describing addr argument for `resolver`

2017-03-20T01:19:04Z

As noted by vangyzen, with a similar issue in D10022, the pointer portion of the .Fa macro call is unnecessary, so remove the '*'. MFC after: 1 week Sponsored by: Dell EMC Isilon

Renumber copyright clause 4

2017-02-28T23:42:47Z

Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96

Add support to libkvm for reading vmcores from other architectures.

2015-11-27T18:58:26Z

- Add a kvaddr_type to represent kernel virtual addresses instead of unsigned long. - Add a struct kvm_nlist which is a stripped down version of struct nlist that uses kvaddr_t for n_value. - Add a kvm_native() routine that returns true if an open kvm descriptor is for a native kernel and memory image. - Add a kvm_open2() function similar to kvm_openfiles(). It drops the unused 'swapfile' argument and adds a new function pointer argument for a symbol resolving function. Native kernels still use _fdnlist() from libc to resolve symbols if a resolver function is not supplied, but cross kernels require a resolver. - Add a kvm_nlist2() function similar to kvm_nlist() except that it uses struct kvm_nlist instead of struct nlist. - Add a kvm_read2() function similar to kvm_read() except that it uses kvaddr_t instead of unsigned long for the kernel virtual address. - Add a new kvm_arch switch of routines needed by a vmcore backend. Each backend is responsible for implementing kvm_read2() for a given vmcore format. - Use libelf to read headers from ELF kernels and cores (except for powerpc cores). - Add internal helper routines for the common page offset hash table used by the minidump backends. - Port all of the existing kvm backends to implement a kvm_arch switch and to be cross-friendly by using private constants instead of ones that vary by platform (e.g. PAGE_SIZE). Static assertions are present when a given backend is compiled natively to ensure the private constants match the real ones. - Enable all of the existing vmcore backends on all platforms. This means that libkvm on any platform should be able to perform KVA translation and read data from a vmcore of any platform. Tested on: amd64, i386, sparc64 (marius) Differential Revision: https://reviews.freebsd.org/D3341

Remove the advertising clause. UCB did this some time ago, but these

2007-01-08T17:35:36Z

files were never updated to reflect that. MFC After: 2 days

Sort sections.

2005-01-20T09:17:07Z

Mechanically kill hard sentence breaks.

2004-07-02T23:52:20Z

Document that kvm_open(3) also accepts "/dev/null" as a special

2004-03-26T08:05:39Z

"corefile" argument, to access the running system via sysctl(3) if possible, thus not requring special setgid privileges.