Re: [Minios-devel] [UNIKRAFT/NEWLIB PATCH 2/5] Use our own <time.h> and <sys/time.h> headers

[Felipe Huici <Felipe.Huici@xxxxxxxxx>]

Hi Costin, this looks ok.  

Reviewed-by: Felipe Huici <felipe.huici@xxxxxxxxx>

On 13.10.19, 15:37, "Costin Lupu" <costin.lupu@xxxxxxxxx> wrote:

    The uktime internal library provides the headers with the time related
    definitions that we need. Given that newlib does not provide guard macros 
for
    most of its definitions (and consequently we get errors because of 
duplicated
    definitions), we decided to skip using its time headers.
    
    In these glue headers we add only those definitions and inclusions that are
    needed by newlib. For example, newlib's <sys/time.h> includes 
<sys/reent.h>, so
    we will do the same here. In <time.h> we added the time zone/locale 
definitions
    needed by newlib.
    
    Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
    ---
     include/sys/time.h | 42 ++++++++++++++++++++++++++++++++++++++++++
     include/time.h     | 28 +++++++++++++++++++++++++++-
     2 files changed, 69 insertions(+), 1 deletion(-)
     create mode 100644 include/sys/time.h
    
    diff --git a/include/sys/time.h b/include/sys/time.h
    new file mode 100644
    index 0000000..4a81946
    --- /dev/null
    +++ b/include/sys/time.h
    @@ -0,0 +1,42 @@
    +/* SPDX-License-Identifier: BSD-3-Clause */
    +/*
    + * Authors: Costin Lupu <costin.lupu@xxxxxxxxx>
    + *
    + * Copyright (c) 2019, University Politehnica of Bucharest. 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 copyright holder 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 HOLDER 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.
    + *
    + * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
    + */
    +
    +#ifndef __NEWLIB_GLUE_SYS_TIME_H__
    +#define __NEWLIB_GLUE_SYS_TIME_H__
    +
    +#include "_ansi.h"
    +
    +#include <sys/reent.h>
    +
    +#endif /* __NEWLIB_GLUE_SYS_TIME_H__ */
    diff --git a/include/time.h b/include/time.h
    index 5361876..a510293 100644
    --- a/include/time.h
    +++ b/include/time.h
    @@ -42,6 +42,32 @@
      */
     #define _POSIX_TIMERS 1
     #define _POSIX_MONOTONIC_CLOCK 1
    -#include_next <time.h>
    +
    +#include <sys/reent.h>
    +#include <xlocale.h>
    +
    +typedef struct __tzrule_struct
    +{
    +   char ch;
    +   int m;
    +   int n;
    +   int d;
    +   int s;
    +   time_t change;
    +   long offset; /* Match type of _timezone. */
    +} __tzrule_type;
    +
    +typedef struct __tzinfo_struct
    +{
    +   int __tznorth;
    +   int __tzyear;
    +   __tzrule_type  __tzrule [2];
    +} __tzinfo_type;
    +
    +__tzinfo_type *__gettzinfo(void);
    +
    +extern long _timezone;
    +extern int _daylight;
    +extern char *_tzname[2];
     
     #endif /* NEWLIBGLUE_TIME_H */
    -- 
    2.20.1
    
    

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