221 lines
4.1 KiB
C
221 lines
4.1 KiB
C
/*
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* Copyright (c) 2000-2001 Proofpoint, Inc. and its suppliers.
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* All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*/
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#include <sm/gen.h>
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SM_RCSID("@(#)$Id: syslogio.c,v 1.30 2013-11-22 20:51:43 ca Exp $")
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <syslog.h>
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#include <errno.h>
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#ifdef SM_RPOOL
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# include <sm/rpool.h>
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#endif /* SM_RPOOL */
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#include <sm/io.h>
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#include "local.h"
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/*
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** Overall:
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** This is a output file type that copies its output to the syslog daemon.
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** Each line of output is written as a separate syslog message.
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** The client is responsible for calling openlog() before writing to
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** any syslog file, and calling closelog() after all syslog output is complete.
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** The only state associated with a syslog file is 'int priority',
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** which we store in fp->f_ival.
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*/
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/*
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** SM_SYSLOGOPEN -- open a file pointer to syslog
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**
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** Parameters:
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** fp -- file pointer assigned for the open
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** info -- priority level of the syslog messages
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** flags -- not used
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** rpool -- ignored
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**
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** Returns:
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** 0 (zero) success always (see Overall)
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*/
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int
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sm_syslogopen(fp, info, flags, rpool)
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SM_FILE_T *fp;
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const void *info;
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int flags;
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const void *rpool;
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{
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int *priority = (int *)info;
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fp->f_ival = *priority;
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return 0;
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}
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/*
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** SM_SYSLOGREAD -- read function for syslog
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**
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** This is a "stub" function (placeholder) that always returns an error.
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** It is an error to read syslog.
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**
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** Parameters:
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** fp -- the file pointer
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** buf -- buffer to place the data read
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** n -- number of bytes to read
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**
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** Returns:
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** -1 (error) always and sets errno
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*/
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ssize_t
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sm_syslogread(fp, buf, n)
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SM_FILE_T *fp;
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char *buf;
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size_t n;
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{
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/* an error to read */
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errno = ENODEV;
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return -1;
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}
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/*
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** SM_SYSLOGWRITE -- write function for syslog
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**
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** Send output to syslog.
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**
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** Parameters:
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** fp -- the file pointer
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** buf -- buffer that the write data comes from
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** n -- number of bytes to write
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**
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** Returns:
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** 0 (zero) for success always
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*/
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/*
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** XXX TODO: more work needs to be done to ensure that each line of output
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** XXX written to a syslog file is mapped to exactly one syslog message.
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*/
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ssize_t
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sm_syslogwrite(fp, buf, n)
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SM_FILE_T *fp;
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char const *buf;
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size_t n;
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{
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syslog(fp->f_ival, "%s", buf);
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return 0;
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}
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/*
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** SM_SYSLOGSEEK -- position the syslog file offset
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**
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** This is a "stub" function (placeholder) that always returns an error.
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** It is an error to seek syslog.
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**
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** Parameters:
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** fp -- the file pointer
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** offset -- the new offset position relative to 'whence'
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** whence -- flag indicating start of 'offset'
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**
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** Returns:
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** -1 (error) always.
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*/
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off_t
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sm_syslogseek(fp, offset, whence)
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SM_FILE_T *fp;
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off_t offset;
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int whence;
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{
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errno = ENODEV;
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return -1;
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}
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/*
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** SM_SYSLOGCLOSE -- close the syslog file pointer
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**
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** Parameters:
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** fp -- the file pointer
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**
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** Returns:
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** 0 (zero) success always (see Overall)
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**
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*/
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int
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sm_syslogclose(fp)
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SM_FILE_T *fp;
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{
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return 0;
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}
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/*
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** SM_SYSLOGSETINFO -- set information for the file pointer
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**
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** Parameters:
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** fp -- the file pointer being set
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** what -- what information is being set
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** valp -- information content being set to
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**
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** Returns:
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** -1 on failure
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** 0 (zero) on success
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**
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** Side Effects:
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** Sets internal file pointer data
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*/
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int
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sm_syslogsetinfo(fp, what, valp)
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SM_FILE_T *fp;
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int what;
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void *valp;
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{
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switch (what)
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{
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case SM_IO_SL_PRIO:
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fp->f_ival = *((int *)(valp));
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return 0;
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default:
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errno = EINVAL;
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return -1;
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}
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}
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/*
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** SM_SYSLOGGETINFO -- get information relating to the file pointer
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**
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** Parameters:
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** fp -- the file pointer being queried
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** what -- the information type being queried
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** valp -- location to placed queried information
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**
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** Returns:
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** 0 (zero) on success
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** -1 on failure
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**
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** Side Effects:
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** Fills in 'valp' with data.
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*/
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int
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sm_sysloggetinfo(fp, what, valp)
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SM_FILE_T *fp;
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int what;
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void *valp;
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{
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switch (what)
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{
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case SM_IO_SL_PRIO:
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*((int *)(valp)) = fp->f_ival;
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return 0;
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default:
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errno = EINVAL;
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return -1;
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}
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}
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