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[time] Define an API for getting the current time

Signed-off-by: Michael Brown <mcb30@ipxe.org>
tags/v1.20.1
Michael Brown vor 12 Jahren
Ursprung
Commit
846bde90e6

+ 12
- 0
src/arch/i386/include/bits/time.h Datei anzeigen

@@ -0,0 +1,12 @@
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+#ifndef _BITS_TIME_H
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+#define _BITS_TIME_H
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+
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+/** @file
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+ *
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+ * i386-specific time API implementations
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+ *
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+ */
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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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+#endif /* _BITS_TIME_H */

+ 12
- 0
src/arch/x86_64/include/bits/time.h Datei anzeigen

@@ -0,0 +1,12 @@
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+#ifndef _BITS_TIME_H
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+#define _BITS_TIME_H
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+
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+/** @file
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+ *
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+ * x86_64-specific time API implementations
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+ *
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+ */
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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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+#endif /* _BITS_TIME_H */

+ 1
- 0
src/config/defaults/efi.h Datei anzeigen

@@ -18,6 +18,7 @@
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 #define SANBOOT_NULL
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 #define BOFM_EFI
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 #define ENTROPY_NULL
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+#define TIME_NULL
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22 23
 #define	IMAGE_EFI		/* EFI image support */
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 #define	IMAGE_SCRIPT		/* iPXE script image support */

+ 1
- 0
src/config/defaults/linux.h Datei anzeigen

@@ -15,6 +15,7 @@
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 #define SMBIOS_LINUX
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 #define SANBOOT_NULL
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 #define ENTROPY_LINUX
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+#define TIME_NULL
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19 20
 #define DRIVERS_LINUX
20 21
 

+ 1
- 0
src/config/defaults/pcbios.h Datei anzeigen

@@ -19,6 +19,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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 #define SMBIOS_PCBIOS
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 #define SANBOOT_PCBIOS
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 #define ENTROPY_RTC
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+#define TIME_NULL
22 23
 
23 24
 #define	IMAGE_ELF		/* ELF image support */
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 #define	IMAGE_MULTIBOOT		/* MultiBoot image support */

+ 16
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src/config/time.h Datei anzeigen

@@ -0,0 +1,16 @@
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+#ifndef CONFIG_TIME_H
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+#define CONFIG_TIME_H
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+
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+/** @file
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+ *
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+ * Time API configuration
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+ *
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+ */
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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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+#include <config/defaults.h>
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+
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+#include <config/local/time.h>
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+
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+#endif /* CONFIG_TIME_H */

+ 29
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src/core/null_time.c Datei anzeigen

@@ -0,0 +1,29 @@
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+/*
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+ * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License as
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+ * published by the Free Software Foundation; either version 2 of the
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+ * License, or any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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+ * General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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+ */
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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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+/** @file
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+ *
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+ * Nonexistent time source
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+ *
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+ */
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+
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+#include <ipxe/time.h>
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+
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+PROVIDE_TIME_INLINE ( null, time_now );

+ 23
- 0
src/include/ipxe/null_time.h Datei anzeigen

@@ -0,0 +1,23 @@
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+#ifndef _IPXE_NULL_TIME_H
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+#define _IPXE_NULL_TIME_H
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+
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+/** @file
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+ *
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+ * Nonexistent time source
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+ *
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+ */
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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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+#ifdef TIME_NULL
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+#define TIME_PREFIX_null
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+#else
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+#define TIME_PREFIX_null __null_
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+#endif
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+
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+static inline __always_inline time_t
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+TIME_INLINE ( null, time_now ) ( void ) {
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+	return 0;
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+}
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+
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+#endif /* _IPXE_NULL_TIME_H */

+ 58
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src/include/ipxe/time.h Datei anzeigen

@@ -0,0 +1,58 @@
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+#ifndef _IPXE_TIME_H
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+#define _IPXE_TIME_H
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+
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+/** @file
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+ *
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+ * Time source
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+ *
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+ */
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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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+#include <sys/time.h>
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+#include <ipxe/api.h>
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+#include <config/time.h>
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+
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+/**
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+ * Calculate static inline time API function name
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+ *
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+ * @v _prefix		Subsystem prefix
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+ * @v _api_func		API function
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+ * @ret _subsys_func	Subsystem API function
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+ */
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+#define TIME_INLINE( _subsys, _api_func ) \
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+	SINGLE_API_INLINE ( TIME_PREFIX_ ## _subsys, _api_func )
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+
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+/**
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+ * Provide a time API implementation
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+ *
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+ * @v _prefix		Subsystem prefix
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+ * @v _api_func		API function
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+ * @v _func		Implementing function
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+ */
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+#define PROVIDE_TIME( _subsys, _api_func, _func ) \
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+	PROVIDE_SINGLE_API ( TIME_PREFIX_ ## _subsys, _api_func, _func )
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+
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+/**
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+ * Provide a static inline time API implementation
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+ *
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+ * @v _prefix		Subsystem prefix
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+ * @v _api_func		API function
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+ */
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+#define PROVIDE_TIME_INLINE( _subsys, _api_func ) \
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+	PROVIDE_SINGLE_API_INLINE ( TIME_PREFIX_ ## _subsys, _api_func )
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+
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+/* Include all architecture-independent time API headers */
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+#include <ipxe/null_time.h>
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+
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+/* Include all architecture-dependent time API headers */
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+#include <bits/time.h>
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+
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+/**
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+ * Get current time in seconds
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+ *
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+ * @ret time		Time, in seconds
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+ */
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+time_t time_now ( void );
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+
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+#endif /* _IPXE_TIME_H */

+ 16
- 0
src/include/time.h Datei anzeigen

@@ -7,6 +7,7 @@
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  */
8 8
 
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 #include <sys/time.h>
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+#include <ipxe/time.h>
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 /** Broken-down time */
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 struct tm {
@@ -30,6 +31,21 @@ struct tm {
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 	int tm_isdst;
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 };
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+/**
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+ * Get current time in seconds since the Epoch
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+ *
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+ * @v t			Time to fill in, or NULL
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+ * @ret time		Current time
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+ */
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+static inline time_t time ( time_t *t ) {
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+	time_t now;
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+
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+	now = time_now();
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+	if ( t )
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+		*t = now;
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+	return now;
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+}
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+
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 extern time_t mktime ( struct tm *tm );
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35 51
 #endif /* _TIME_H */

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