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/*
* fino.c -- find inode functions for lsof library
*/
/*
* Copyright 1997 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.
*/
/*
* fino.c -- find block (optional) and character device file inode numbers
*
* The caller must define:
*
* HASBLKDEV to activate the block device inode lookup
*/
#include "common.h"
#include "machine.h"
#if defined(HASBLKDEV) || defined(USE_LIB_FIND_CH_INO)
#else /* !defined(HASBLKDEV) && !defined(USE_LIB_FIND_CH_INO) */
char fino_d1[] = "d";
char *fino_d2 = fino_d1;
#endif /* defined(HASBLKDEV) || defined(USE_LIB_FIND_CH_INO) */
#if defined(HASBLKDEV)
/*
* find_bl_ino() - find the inode number for a block device file
*/
void find_bl_ino(struct lsof_context *ctx) {
dev_t ldev, tdev;
int low, hi, mid;
readdev(ctx, 0);
# if defined(HASDCACHE)
find_bl_ino_again:
# endif /* defined(HASDCACHE) */
low = mid = 0;
hi = BNdev - 1;
if (!Lf->dev_def || (Lf->dev != DevDev) || !Lf->rdev_def)
return;
ldev = Lf->rdev;
while (low <= hi) {
mid = (low + hi) / 2;
tdev = BSdev[mid]->rdev;
if (ldev < tdev)
hi = mid - 1;
else if (ldev > tdev)
low = mid + 1;
else {
# if defined(HASDCACHE)
if (DCunsafe && !BSdev[mid]->v && !vfy_dev(ctx, BSdev[mid]))
goto find_bl_ino_again;
# endif /* defined(HASDCACHE) */
Lf->inode = BSdev[mid]->inode;
if (Lf->inp_ty == 0)
Lf->inp_ty = 1;
return;
}
}
}
#endif /* defined(HASBLKDEV) */
#if defined(USE_LIB_FIND_CH_INO)
/*
* find_ch_ino() - find the inode number for a character device file
*/
void find_ch_ino(struct lsof_context *ctx) {
dev_t ldev, tdev;
int low, hi, mid;
readdev(ctx, 0);
# if defined(HASDCACHE)
find_ch_ino_again:
# endif /* defined(HASDCACHE) */
low = mid = 0;
hi = Ndev - 1;
if (!Lf->dev_def || (Lf->dev != DevDev) || !Lf->rdev_def)
return;
ldev = Lf->rdev;
while (low <= hi) {
mid = (low + hi) / 2;
tdev = Sdev[mid]->rdev;
if (ldev < tdev)
hi = mid - 1;
else if (ldev > tdev)
low = mid + 1;
else {
# if defined(HASDCACHE)
if (DCunsafe && !Sdev[mid]->v && !vfy_dev(ctx, Sdev[mid]))
goto find_ch_ino_again;
# endif /* defined(HASDCACHE) */
Lf->inode = Sdev[mid]->inode;
if (Lf->inp_ty == 0)
Lf->inp_ty = 1;
return;
}
}
}
#endif /* defined(USE_LIB_FIND_CH_INO) */
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