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2b72262b4f
I hereby relicense all my work on Sortix under the ISC license as below. All Sortix contributions by other people are already under this license, are not substantial enough to be copyrightable, or have been removed. All imported code from other projects is compatible with this license. All GPL licensed code from other projects had previously been removed. Copyright 2011-2016 Jonas 'Sortie' Termansen and contributors. Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
73 lines
2.6 KiB
C
73 lines
2.6 KiB
C
/*
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* Copyright (c) 2014 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* syslog/vsyslog.c
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* Logs a condition to the system log.
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*/
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <syslog.h>
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#include <time.h>
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#include <unistd.h>
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char* __syslog_identity = NULL;
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int __syslog_facility = LOG_USER;
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int __syslog_fd = -1;
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int __syslog_mask = LOG_UPTO(LOG_DEBUG);
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int __syslog_option = 0;
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// TODO: The transmitted string might be delivered in chunks using this dprintf
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// approach (plus there are multiple dprintf calls). We should buffer the
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// string fully before transmitting it.
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// TODO: The log entry format here is just whatever some other system does. We
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// should work out the Sortix system log semantics and adapt this to that.
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void vsyslog(int priority, const char* format, va_list ap)
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{
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// Drop the event if it doesn't fit the current priority mask.
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if ( !(LOG_MASK(LOG_PRI(priority)) & __syslog_mask) )
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return;
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// Connect to the system log if a connection hasn't yet been established.
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if ( __syslog_fd < 0 && (__syslog_fd = connectlog()) < 0 )
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return;
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// If no facility is given we'll use the default facility from openlog.
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if ( !LOG_FAC(priority) )
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priority |= __syslog_facility;
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// Prepare a timestamp for the log event.
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struct timespec now;
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clock_gettime(CLOCK_REALTIME, &now);
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struct tm tm;
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gmtime_r(&now.tv_sec, &tm);
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char timestamp[32];
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strftime(timestamp, sizeof(timestamp), "%b %e %T", &tm);
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// Include the process id of the current process if requested.
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pid_t pid = (__syslog_option & LOG_PID) ? getpid() : 0;
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// Transmit the event to the system log.
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dprintf(__syslog_fd, "<%d>%s %s%s%.0jd%s: ",
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priority,
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timestamp,
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__syslog_identity ? __syslog_identity : "",
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"[" + !pid, (intmax_t) pid, "]" + !pid);
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vdprintf(__syslog_fd, format, ap);
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dprintf(__syslog_fd, "\n");
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}
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