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Re: [Minios-devel] [UNIKRAFT PATCH] lib/ukunistd: Introduce ukunistd library



Hi Felipe,

Please see my comment inline.

On 4/4/19 10:16 AM, Felipe Huici wrote:
> Library to provide access to POSIX operating system APIs. Only
> getuid is implemented for now.
> 
> Signed-off-by: Felipe Huici <felipe.huici@xxxxxxxxx>
> ---
>  lib/Config.uk              |  1 +
>  lib/Makefile.uk            |  1 +
>  lib/ukunistd/Config.uk     |  3 +++
>  lib/ukunistd/Makefile.uk   |  3 +++
>  lib/ukunistd/exportsyms.uk |  1 +
>  lib/ukunistd/getuid.c      | 41 +++++++++++++++++++++++++++++++++++++++++
>  6 files changed, 50 insertions(+)
>  create mode 100644 lib/ukunistd/Config.uk
>  create mode 100644 lib/ukunistd/Makefile.uk
>  create mode 100644 lib/ukunistd/exportsyms.uk
>  create mode 100644 lib/ukunistd/getuid.c
> 
> diff --git a/lib/Config.uk b/lib/Config.uk
> index 7d86f76c..553d4c6b 100644
> --- a/lib/Config.uk
> +++ b/lib/Config.uk
> @@ -30,6 +30,7 @@ config HAVE_NW_STACK
>  source "lib/ukboot/Config.uk"
>  source "lib/ukdebug/Config.uk"
>  source "lib/ukargparse/Config.uk"
> +source "lib/ukunistd/Config.uk"
>  source "lib/uktimeconv/Config.uk"
>  source "lib/nolibc/Config.uk"
>  source "lib/ukalloc/Config.uk"
> diff --git a/lib/Makefile.uk b/lib/Makefile.uk
> index d66c7ee9..54a957de 100644
> --- a/lib/Makefile.uk
> +++ b/lib/Makefile.uk
> @@ -6,6 +6,7 @@
>  
>  $(eval $(call _import_lib,$(CONFIG_UK_BASE)/lib/ukboot))
>  $(eval $(call _import_lib,$(CONFIG_UK_BASE)/lib/ukswrand))
> +$(eval $(call _import_lib,$(CONFIG_UK_BASE)/lib/ukunistd))
>  $(eval $(call _import_lib,$(CONFIG_UK_BASE)/lib/ukdebug))
>  $(eval $(call _import_lib,$(CONFIG_UK_BASE)/lib/ukargparse))
>  $(eval $(call _import_lib,$(CONFIG_UK_BASE)/lib/uktimeconv))
> diff --git a/lib/ukunistd/Config.uk b/lib/ukunistd/Config.uk
> new file mode 100644
> index 00000000..be0c94e1
> --- /dev/null
> +++ b/lib/ukunistd/Config.uk
> @@ -0,0 +1,3 @@
> +menuconfig UKUNISTD
> +     bool "ukunistd: POSIX operating system API"
> +     default n
> diff --git a/lib/ukunistd/Makefile.uk b/lib/ukunistd/Makefile.uk
> new file mode 100644
> index 00000000..c0e9b180
> --- /dev/null
> +++ b/lib/ukunistd/Makefile.uk
> @@ -0,0 +1,3 @@
> +$(eval $(call addlib_s,ukunistd,$(CONFIG_UKUNISTD)))
> +
> +UKUNISTD_SRCS-$(CONFIG_UKUNISTD) += $(UKUNISTD_BASE)/getuid.c
> diff --git a/lib/ukunistd/exportsyms.uk b/lib/ukunistd/exportsyms.uk
> new file mode 100644
> index 00000000..11bdffc2
> --- /dev/null
> +++ b/lib/ukunistd/exportsyms.uk
> @@ -0,0 +1 @@
> +getuid
> diff --git a/lib/ukunistd/getuid.c b/lib/ukunistd/getuid.c
> new file mode 100644
> index 00000000..d8ad7c86
> --- /dev/null
> +++ b/lib/ukunistd/getuid.c
> @@ -0,0 +1,41 @@
> +/* SPDX-License-Identifier: BSD-3-Clause */
> +/*
> + * Authors: Felipe Huici <felipe.huici@xxxxxxxxx>
> + *          Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
> + *
> + * Copyright (c) 2018, NEC Europe Ltd., NEC Corporation. All rights reserved.

I think we should update the year.

> + *
> + * 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.
> + */
> +
> +#include <unistd.h>
> +#include <sys/types.h>
> +
> +uid_t getuid(void) {
> +     return 0;
> +}
> 

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