lib/dialects/hpux/kmem/dnode1.c - master - githubmirror/lsof

lib/dialects/hpux/kmem/dnode1.c
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Expose functionality as a re-usable library - Part 2 (#284)
12 апр 2023, 09:01
12 апр 2023, 09:016dca348
/*
 * dnode1.c - /dev/kmem-based HP-UX node functions for lsof
 *
 * This module must be separate to keep separate the multiple kernel inode
 * structure definitions.
 */

/*
 * Copyright 1995 Purdue Research Foundation, West Lafayette, Indiana
 * 47907.  All rights reserved.
 *
 * Written by Victor A. Abell
 *
 * This software is not subject to any license of the American Telephone
 * and Telegraph Company or the Regents of the University of California.
 *
 * Permission is granted to anyone to use this software for any purpose on
 * any computer system, and to alter it and redistribute it freely, subject
 * to the following restrictions:
 *
 * 1. Neither the authors nor Purdue University are responsible for any
 *    consequences of the use of this software.
 *
 * 2. The origin of this software must not be misrepresented, either by
 *    explicit claim or by omission.  Credit to the authors and Purdue
 *    University must appear in documentation and sources.
 *
 * 3. Altered versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 *
 * 4. This notice may not be removed or altered.
 */

#ifndef lint
static char copyright[] =
    "@(#) Copyright 1994 Purdue Research Foundation.\nAll rights reserved.\n";
#endif

#if defined(HASVXFS)

#    if defined(HPUXKERNBITS) && HPUXKERNBITS >= 64
#        define _INO_T
typedef int ino_t;
#        define _TIME_T
typedef int time_t;
#    endif /* defined(HPUXKERNBITS) && HPUXKERNBITS>=64 */

#    include "lsof.h"

/*
 * HP-UX versions below 10.20:
 *
 *    The pool_id_t type does not seem to be defined in the header  files
 *    distributed by HP.  However, <sys/fs/vx_hpux.h> requires  it when
 *    _KERNEL is defined.  So we fake the pool_id_t definition.
 *
 *    <sys/fs/vx_hpux.h> also requires sv_sema_t.  It's defined in
 *    <sys/sem_alpha.h> when _KERNEL is defined, but some other header file has
 *    already included <sys/sem_alpha.h> with _KERNEL undefined.  So we fake the
 *    sv_sema_t definition.
 *
 * HP-UX version 10.20 and above:
 *
 *    The pool_id_t type is used by other header files for other purposes.
 *    Redefine it for VXFS.  Delete some other conflicting definitions.
 *    Don't #define _KERNEL.  Include a different set of VXFS header files.
 */

#    if HPUXV >= 1020
#        undef te_offset
#        undef i_size
#        undef di_size
#        define pool_id_t vx_pool_id_t

#        if HPUXV >= 1030
#            define ulong vx_ulong /* avoid <sys/stream.h> conflict */
#        endif                     /* HPUXV>=1030 */

#        include <sys/fs/vx_hpux.h>
#        include <sys/fs/vx_port.h>
#        include <sys/fs/vx_inode.h>

#        if HPUXV >= 1030
#            undef ulong
#        endif /* HPUXV>=1030 */

#    else /* HPUXV<1020 */

#        define pool_id_t caddr_t
#        define sv_sema_t caddr_t
#        define _KERNEL
#        include <sys/fs/vx_hpux.h>
#        include <sys/fs/vx_inode.h>
#        undef _KERNEL
#    endif /* HPUXV>=1020 */

/*
 * read_vxnode() - read Veritas file system inode information
 */

int read_vxnode(struct vnode *v,   /* local containing vnode */
                struct l_vfs *vfs, /* local vfs structure */
                dev_t *dev,        /* device number receiver */
                int *devs,         /* device status receiver */
                dev_t *rdev,       /* raw device number receiver */
                int *rdevs)        /* raw device status receiver */
{
    struct vx_inode i;

    if (!v->v_data || kread(ctx, (KA_T)v->v_data, (char *)&i, sizeof(i)))
        return (1);
    /*
     * Return device numbers.
     */
    if (vfs && vfs->fsname)
        *dev = vfs->dev;
    else
        *dev = i.i_dev;
    *devs = 1;
    if ((v->v_type == VCHR) || (v->v_type == VBLK)) {
        *rdev = v->v_rdev;
        *rdevs = 1;
    }
    /*
     * Record inode number.
     */
    Lf->inode = (INODETYPE)i.i_number;
    Lf->inp_ty = 1;
    /*
     * Record size.
     */
    if (!(v->v_type == VCHR || v->v_type == VBLK)) {
        Lf->sz = (SZOFFTYPE)i.i_size;
        Lf->sz_def = 1;
    }
    /*
     * Record link count.
     */
    Lf->nlink = (long)i.i_nlink;
    Lf->nlink_def = 1;
    if (Nlink && (Lf->nlink < Nlink))
        Lf->sf |= SELNLINK;
    return (0);
}
#endif /* defined(HASVXFS) */