132 lines
2.9 KiB
C
Executable File
132 lines
2.9 KiB
C
Executable File
/*
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* Copyright (c) 1995, by Sun Microsystems, Inc.
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* All rights reserved.
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*/
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#pragma ident "@(#)write.c 1.4 95/08/29 SMI"
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#include "../common/compat.h"
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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/*
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* If writing to a utmp-like file, map the utmp structure to
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* new format on the fly.
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*/
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extern int conv2utmp(char *, char *, int);
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extern int conv2utmpx(char *, char *, int);
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int
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write(int fd, char *buf, int size)
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{
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return (bc_write(fd, buf, size));
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}
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int
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bc_write(int fd, char *buf, int size)
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{
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int fds, ret, off;
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int nsize;
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char *nbuf;
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if ((fds = fd_get(fd)) != -1) {
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nsize = getmodsize(size, sizeof (struct utmp),
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sizeof (struct utmpx));
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if ((nbuf = (void *)malloc(nsize)) == NULL) {
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(void) fprintf(stderr, "write: malloc failed\n");
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exit(-1);
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}
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(void) memset(nbuf, 0, nsize);
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ret = conv2utmpx(nbuf, buf, size);
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if ((ret = _write(fds, nbuf, ret)) == -1) {
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free(nbuf);
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return (-1);
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}
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(void) memset(nbuf, 0, nsize);
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ret = conv2utmp(nbuf, buf, size);
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if ((ret = _write(fd, nbuf, ret)) == -1) {
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free(nbuf);
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return (-1);
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}
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free(nbuf);
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ret = getmodsize(ret, sizeof (struct compat_utmp),
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sizeof (struct utmp));
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return (ret);
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}
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return (_write(fd, buf, size));
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}
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/* From SunOS/SVR4 utmp.h */
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#define USER_PROCESS 7
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#define DEAD_PROCESS 8
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extern int
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conv2utmp(char *nbuf, char *buf, int len)
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{
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struct utmp *ut;
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struct compat_utmp *cut;
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cut = (struct compat_utmp *) nbuf;
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ut = (struct utmp *) buf;
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while ((char *)ut < (buf + len)) {
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(void) strcpy(cut->ut_user, ut->ut_name);
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(void) memset(cut->ut_id, 0, sizeof (cut->ut_id));
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(void) strcpy(cut->ut_line, ut->ut_line);
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cut->ut_pid = 0;
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if (strcmp(cut->ut_user, "") == 0)
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cut->ut_type = DEAD_PROCESS;
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else
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cut->ut_type = USER_PROCESS;
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cut->ut_exit.e_termination = 0;
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cut->ut_exit.e_exit = 0;
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cut->ut_time = ut->ut_time;
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ut++;
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cut++;
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}
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return ((char *) cut - nbuf);
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}
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extern int
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conv2utmpx(char *nbuf, char *buf, int len)
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{
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struct utmp *ut;
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struct utmpx *utx;
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utx = (struct utmpx *) nbuf;
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ut = (struct utmp *) buf;
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while ((char *)ut < (buf + len)) {
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(void) strcpy(utx->ut_user, ut->ut_name);
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(void) memset(utx->ut_id, 0, sizeof (utx->ut_id));
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(void) strcpy(utx->ut_line, ut->ut_line);
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utx->ut_pid = 0;
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if ((strcmp(utx->ut_user, "") == 0) &&
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(strcmp(utx->ut_host, "") == 0))
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utx->ut_type = DEAD_PROCESS;
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else
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utx->ut_type = USER_PROCESS;
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utx->ut_exit.e_termination = 0;
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utx->ut_exit.e_exit = 0;
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utx->ut_tv.tv_sec = ut->ut_time;
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utx->ut_tv.tv_usec = 0;
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utx->ut_session = 0;
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utx->ut_syslen = sizeof (ut->ut_name) + 1;
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(void) strcpy(utx->ut_host, ut->ut_host);
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ut++;
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utx++;
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}
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return ((char *) utx - nbuf);
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}
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