From 1e5ff2f9b76639321b6ea165cb3508dc47135144 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Sat, 13 Sep 2025 23:25:22 -0400 Subject: os: Add syslog logging Signed-off-by: Ian Moffett --- src/sys/include/sys/syslog.h | 38 +++++++++++++++++++++++++ src/sys/os/os_syslog.c | 66 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 104 insertions(+) create mode 100644 src/sys/include/sys/syslog.h create mode 100644 src/sys/os/os_syslog.c (limited to 'src/sys') diff --git a/src/sys/include/sys/syslog.h b/src/sys/include/sys/syslog.h new file mode 100644 index 0000000..973ce0e --- /dev/null +++ b/src/sys/include/sys/syslog.h @@ -0,0 +1,38 @@ +/* + * Copyright (c) 2025 Ian Marco Moffett and L5 engineers + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _SYS_SYSLOG_H_ +#define _SYS_SYSLOG_H_ 1 + +#include + +void vprintf(const char *fmt, va_list *ap); +void printf(const char *fmt, ...); + +#endif /* !_SYS_SYSLOG */ diff --git a/src/sys/os/os_syslog.c b/src/sys/os/os_syslog.c new file mode 100644 index 0000000..b0e07dc --- /dev/null +++ b/src/sys/os/os_syslog.c @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2025 Ian Marco Moffett and L5 engineers + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include /* shared */ +#include +#include +#include +#include + +static void +syslog_write(const char *str, size_t len) +{ + static struct spinlock lock = {0}; + + spinlock_acquire(&lock); + for (int i = 0; i < len; ++i) { + uart_write(*str++); + } + spinlock_release(&lock); +} + +void +vprintf(const char *fmt, va_list *ap) +{ + char buffer[1024] = {0}; + + vsnprintf(buffer, sizeof(buffer), fmt, *ap); + syslog_write(buffer, strlen(buffer)); +} + +void +printf(const char *fmt, ...) +{ + static va_list ap; + + va_start(ap, fmt); + vprintf(fmt, &ap); + va_end(ap); +} -- cgit v1.2.3