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/*
* ptyint_update_utmp: Update or create a utmp entry
*
* Copyright 1995 by the Massachusetts Institute of Technology.
*
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that the above copyright notice appear in all
* copies and that both that copyright notice and this permission
* notice appear in supporting documentation, and that the name of
* M.I.T. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability
* of this software for any purpose. It is provided "as is" without
* express or implied warranty.
*
*/
#include <com_err.h>
#include "libpty.h"
#include "pty-int.h"
#if !defined(WTMP_FILE) && defined(_PATH_WTMP)
#define WTMP_FILE _PATH_WTMP
#endif
#if !defined(WTMPX_FILE) && defined(_PATH_WTMPX) && defined(HAVE_UPDWTMPX)
#define WTMPX_FILE _PATH_WTMPX
#endif
/* if it is *still* missing, assume SunOS */
#ifndef WTMP_FILE
#define WTMP_FILE "/usr/adm/wtmp"
#endif
#if defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
/* This is ugly, but the lack of standardization in the utmp/utmpx
* space, and what glibc implements and doesn't make available, is
* even worse.
*/
#undef HAVE_UPDWTMPX /* Don't use updwtmpx for glibc 2.1 */
#endif
long ptyint_update_wtmp (ent , host, user)
struct utmp *ent;
char *host;
char *user;
{
struct utmp ut;
struct stat statb;
int fd;
time_t uttime;
#ifdef HAVE_UPDWTMPX
struct utmpx utx;
getutmpx(ent, &utx);
if (host)
strncpy(utx.ut_host, host, sizeof(utx.ut_host) );
else
utx.ut_host[0] = 0;
if (user)
strncpy(utx.ut_user, user, sizeof(utx.ut_user));
updwtmpx(WTMPX_FILE, &utx);
#endif
#ifdef HAVE_UPDWTMP
#ifndef HAVE_UPDWTMPX
/* This is already performed byupdwtmpx if present.*/
updwtmp(WTMP_FILE, ent);
#endif /* HAVE_UPDWTMPX*/
#else /* HAVE_UPDWTMP */
if ((fd = open(WTMP_FILE, O_WRONLY|O_APPEND, 0)) >= 0) {
if (!fstat(fd, &statb)) {
(void)memset((char *)&ut, 0, sizeof(ut));
#ifdef __hpux
strncpy (ut.ut_id, ent->ut_id, sizeof (ut.ut_id));
#endif
(void)strncpy(ut.ut_line, ent->ut_line, sizeof(ut.ut_line));
(void)strncpy(ut.ut_name, ent->ut_name, sizeof(ut.ut_name));
#ifndef NO_UT_HOST
(void)strncpy(ut.ut_host, ent->ut_host, sizeof(ut.ut_host));
#endif
(void)time(&uttime);
ut.ut_time = uttime;
#if defined(HAVE_GETUTENT) && defined(USER_PROCESS)
if (ent->ut_name) {
if (!ut.ut_pid)
ut.ut_pid = getpid();
#ifndef __hpux
ut.ut_type = USER_PROCESS;
#else
ut.ut_type = ent->ut_type;
#endif
} else {
#ifdef EMPTY
ut.ut_type = EMPTY;
#else
ut.ut_type = DEAD_PROCESS; /* For Linux brokenness*/
#endif
}
#endif
if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
sizeof(struct utmp))
(void)ftruncate(fd, statb.st_size);
}
(void)close(fd);
}
#endif /* HAVE_UPDWTMP */
return 0; /* no current failure cases; file not found is not failure!*/
}
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