98c63a48e9
- Massively reduce BSS usage. Let futx_to_utx() dynamically allocate the structure. There is only a very small amount of applications out there that needs to use the utmpx database. Wasting 1 KB on unused structures makes little sense. - Just let getutxid() search for matching ut_id's for any *PROCESS-type. This makes the code a bit more future-proof. - Fix a POSIX-mistake: when reading POSIX and the OpenSolaris implementation, getutxline() must return USER_PROCESS and LOGIN_PROCESS records whose ut_lines match. When reading POSIX, it seems LOGIN_PROCESS should not use ut_line at the first place. I have reported this issue.
62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*-
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* Copyright (c) 2010 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _UTXDB_H_
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#define _UTXDB_H_
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#include <stdint.h>
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#define _PATH_UTX_ACTIVE "/var/run/utx.active"
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#define _PATH_UTX_LASTLOGIN "/var/log/utx.lastlogin"
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#define _PATH_UTX_LOG "/var/log/utx.log"
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/*
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* Entries in struct futx are ordered by how often they are used. In
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* utx.log only entries will be written until the last non-zero byte,
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* which means we want to put the hostname at the end. Most primitive
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* records only store a ut_type and ut_tv, which means we want to store
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* those at the front.
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*/
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struct utmpx;
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struct futx {
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uint8_t fu_type;
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uint64_t fu_tv;
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char fu_id[8];
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uint32_t fu_pid;
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char fu_user[32];
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char fu_line[16];
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char fu_host[128];
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} __packed;
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void utx_to_futx(const struct utmpx *, struct futx *);
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struct utmpx *futx_to_utx(const struct futx *);
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#endif /* !_UTXDB_H_ */
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