54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/*
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* Copyright (c) 1988 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)logwtmp.c 1.1 94/10/31 SMI"; /* from UCB 5.3 12/7/88 */
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/file.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <utmp.h>
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#define WTMPFILE "/var/adm/wtmp"
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static int fd = -1;
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/*
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* Modified version of logwtmp that holds wtmp file open
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* after first call, for use with ftp (which may chroot
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* after login, but before logout).
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*/
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logwtmp(line, name, host)
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char *line, *name, *host;
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{
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struct utmp ut;
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struct stat buf;
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time_t time();
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char *strncpy();
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if (fd < 0 && (fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
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return;
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if (fstat(fd, &buf) == 0) {
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(void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
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(void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
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(void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
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(void)time(&ut.ut_time);
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if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
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sizeof(struct utmp))
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(void)ftruncate(fd, buf.st_size);
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}
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}
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