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coredump_write(9) [netbsd man page]

COREDUMP_WRITE(9)					   BSD Kernel Developer's Manual					 COREDUMP_WRITE(9)

coredump_write -- common coredump write routine SYNOPSIS
#include <sys/signalvar.h> int coredump_write(void *iocookie, enum uio_seg segflg, const void *data, size_t len); DESCRIPTION
coredump_write() is used by both machine-dependent and machine-independent components to write information to a coredump. iocookie is an opaque pointer that was supplied to the caller of coredump_write(). segflg indicates where the data is located, system space or user space. data points to the information to be written to the coredump. len is the amount of data to be written. coredump_write() returns 0 on success and an appropriate error code on failure. CODE REFERENCES
Process core dumps are initiated within the file sys/kern/kern_sig.c. Process core dumps for ELF NetBSD binaries are performed within the files sys/kern/core_elf32.c or sys/kern/core_elf64.c. Process core dumps for other NetBSD binaries are performed within the file sys/kern/core_netbsd.c. SEE ALSO
cpu_coredump(9) BSD
December 24, 2005 BSD

Check Out this Related Man Page

VFS_HOOKS(9)						   BSD Kernel Developer's Manual					      VFS_HOOKS(9)

vfs_hooks, vfs_hooks_unmount -- VFS hooks interface SYNOPSIS
#include <sys/param.h> #include <sys/mount.h> void vfs_hooks_unmount(struct mount *mp); DESCRIPTION
The VFS hooks interface provides a way for different kernel subsystems to attach custom functions to specific VFS operations. This enforces code separation by keeping the VFS's core sources uncluttered and makes all subsystem functionality reside in a single place. As an example, this interface is used by the NFS server code to automatically handle the exports list for each mount point. Hooks are described by a struct vfs_hooks object, as seen below: struct vfs_hooks { int (*vh_unmount)(struct mount *); }; For simplicity, each field is named after the VFS operation it refers to. The purpose of each member function, alongside some important notes, is shown below: vh_unmount(mp) This hook is executed during the unmount process of a file system. For more information about the purpose of each operation, see vfsops(9). Note that any of these fields may be a null pointer. After the definition of a struct vfs_hooks object, the kernel has to add it to the vfs_hooks link set using the VFS_HOOKS_ATTACH(struct vfs_hooks *) macro. Please note that this interface is incomplete on purpose to keep it in its smallest possible size (i.e., do not provide a hook that is not used). If you feel the need to hook a routine to a VFS operation that is not yet supported by this interface, just add it to the files described in CODE REFERENCES. FUNCTIONS
The following functions are provided to the VFS code to run the hooked functions: vfs_hooks_unmount(mp) Runs all hooks for the VFS unmount operation. Given that these operations shall not fail, it returns void. CODE REFERENCES
The VFS hooks interface is implemented within the files sys/kern/vfs_hooks.c and sys/sys/mount.h. SEE ALSO
intro(9), vfs(9), vfsops(9) HISTORY
The VFS hooks interface appeared in NetBSD 4.0. BSD
September 23, 2005 BSD
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