KVM_GETFILES(3) BSD Library Functions Manual KVM_GETFILES(3)NAME
kvm_getfiles -- survey open files
LIBRARY
Kernel Data Access Library (libkvm, -lkvm)
SYNOPSIS
#include <kvm.h>
#include <sys/kinfo.h>
#define _KERNEL
#include <sys/file.h>
#undef _KERNEL
char *
kvm_getfiles(kvm_t *kd, int op, int arg, int *cnt);
DESCRIPTION
kvm_getfiles() returns a (sub-)set of the open files in the kernel indicated by kd. The op and arg arguments constitute a predicate which
limits the set of files returned. No predicates are currently defined.
The number of processes found is returned in the reference parameter cnt. The files are returned as a contiguous array of file structures,
preceded by the address of the first file entry in the kernel. This memory is owned by kvm and is not guaranteed to be persistent across
subsequent kvm library calls. Data should be copied out if it needs to be saved.
RETURN VALUES
kvm_getfiles() will return NULL on failure.
SEE ALSO kvm(3), kvm_close(3), kvm_geterr(3), kvm_nlist(3), kvm_open(3), kvm_openfiles(3), kvm_read(3), kvm_write(3)BUGS
This routine does not belong in the kvm interface.
BSD April 19, 1994 BSD
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KVM_GETERR(3) BSD Library Functions Manual KVM_GETERR(3)NAME
kvm_geterr -- get error message on kvm descriptor
LIBRARY
Kernel Data Access Library (libkvm, -lkvm)
SYNOPSIS
#include <kvm.h>
char *
kvm_geterr(kvm_t *kd);
DESCRIPTION
This function returns a string describing the most recent error condition on the descriptor kd. The results are undefined if the most recent
kvm(3) library call did not produce an error. The string returned is stored in memory owned by kvm(3) so the message should be copied out
and saved elsewhere if necessary.
SEE ALSO kvm(3), kvm_close(3), kvm_getargv(3), kvm_getenvv(3), kvm_getprocs(3), kvm_nlist(3), kvm_open(3), kvm_openfiles(3), kvm_read(3), kvm_write(3)BUGS
This routine cannot be used to access error conditions due to a failed kvm_openfiles() call, since failure is indicated by returning a NULL
descriptor. Therefore, errors on open are output to the special error buffer passed to kvm_openfiles(). This option is not available to
kvm_open().
BSD June 4, 1993 BSD
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