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/*
* dfile.c - SCO OpenServer file processing functions for lsof
*/
/*
* 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 1995 Purdue Research Foundation.\nAll rights reserved.\n";
static char *rcsid = "$Id: dfile.c,v 1.11 2000/12/04 14:32:49 abe Exp abe $";
#endif
#include "lsof.h"
/*
* get_max_fd() - get maximum file descriptor plus one
*/
int
get_max_fd()
{
#if defined(F_GETHFDO) || defined(_SC_OPEN_MAX)
int nd;
#endif /* defined(F_GETHFDO) || defined(_SC_OPEN_MAX) */
#if defined(F_GETHFDO)
if ((nd = fcntl(-1, F_GETHFDO, 0)) >= 0)
return(nd);
#endif /* defined(F_GETHFDO) */
#if defined(_SC_OPEN_MAX)
if ((nd = sysconf(_SC_OPEN_MAX)) >= 0)
return(nd);
#endif /* defined(_SC_OPEN_MAX) */
return(getdtablesize());
}
/*
* print_dev() - print dev
*/
char *
print_dev(lf, dev)
struct lfile *lf; /* file whose device is to be printed */
dev_t *dev; /* device to be printed */
{
static char buf[128];
(void) snpf(buf, sizeof(buf), "%d,%d",
lf->is_nfs ? ((~(*dev >> 8)) & 0xff) : emajor(*dev),
eminor(*dev));
return(buf);
}
/*
* print_ino() - print inode
*/
char *
print_ino(lf)
struct lfile *lf; /* file whose device is to be printed */
{
static char buf[128];
(void) snpf(buf, sizeof(buf), (lf->inode & 0x80000000) ? "%#x" : "%lu",
lf->inode);
return(buf);
}
/*
* process_file() - process file
*/
void
process_file(fp)
KA_T fp; /* kernel file structure address */
{
struct file f;
int flag;
if (kread(fp, (char *)&f, sizeof(f))) {
(void) snpf(Namech, Namechl, "can't read file struct from %s",
print_kptr(fp, (char *)NULL, 0));
enter_nm(Namech);
return;
}
Lf->off = (SZOFFTYPE)f.f_offset;
if (f.f_count) {
/*
* Construct access code.
*/
if ((flag = (f.f_flag & (FREAD | FWRITE))) == FREAD)
Lf->access = 'r';
else if (flag == FWRITE)
Lf->access = 'w';
else if (flag == (FREAD | FWRITE))
Lf->access = 'u';
/*
* Process structure.
*/
#if defined(HASFSTRUCT)
/*
* Save file structure values.
*/
if (Fsv & FSV_CT) {
Lf->fct = (long)f.f_count;
Lf->fsv |= FSV_CT;
}
if (Fsv & FSV_FA) {
Lf->fsa = fp;
Lf->fsv |= FSV_FA;
}
if (Fsv & FSV_FG) {
Lf->ffg = (long)f.f_flag;
Lf->fsv |= FSV_FG;
}
if (Fsv & FSV_NI) {
Lf->fna = (KA_T)f.f_inode;
Lf->fsv |= FSV_NI;
}
#endif /* defined(HASFSTRUCT) */
process_node((KA_T)f.f_inode);
return;
}
enter_nm("no more information");
}
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