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freebsd-dev/lib/libefivar/efivar.3

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Regularize the Netflix copyright Use recent best practices for Copyright form at the top of the license: 1. Remove all the All Rights Reserved clauses on our stuff. Where we piggybacked others, use a separate line to make things clear. 2. Use "Netflix, Inc." everywhere. 3. Use a single line for the copyright for grep friendliness. 4. Use date ranges in all places for our stuff. Approved by: Netflix Legal (who gave me the form), adrian@ (pmc files)
2019-02-04 21:28:25 +00:00
.\"
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.\" Copyright 2016 Netflix, Inc.
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.\"
.\" $FreeBSD$
.\"
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.Dd October 25, 2018
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Dt LIBEFIVAR 3
.Os
.Sh NAME
.Nm libefivar
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.Nd EFI Non Volatile Variable Support
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Sh SYNOPSIS
.In efivar.h
.Ft int
.Fn efi_append_variable "efi_guid_t guid" "const char *name" "void *data" "size_t data_size" "uint32_t attributes"
.Ft int
.Fn efi_del_variable "efi_guid_t guid" "const char *name"
.Ft int
.Fn efi_get_variable "efi_guid_t guid" "const char *name" "void **data" "ssize_t *data_size" "uint32_t *attributes"
.Ft int
.Fn efi_get_variable_attributes "efi_guid_t guid" "const char *name" "uint32_t *attributes"
.Ft int
.Fn efi_get_variable_size "efi_guid_t guid" "const char *name" "size_t *size"
.Ft int
.Fn efi_get_next_variable_name "efi_guid_t **guid" "char **name"
.Ft int
.Fn efi_guid_to_name "efi_guid_t *guid" "char **name"
.Ft int
.Fn efi_guid_to_symbol "efi_guid_t *guid" "char **symbol"
.Ft int
.Fn efi_guid_to_str "const efi_guid_t *guid" "char **sp"
.Ft int
.Fn efi_name_to_guid "const char *name" "efi_guid_t *guid"
.Ft int
.Fn efi_set_variable "efi_guid_t guid" "const char *name" "void *data" "size_t data_size" "uint32_t attributes"
.Ft int
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.Fn efi_str_to_guid "const char *s" "efi_guid_t *guid"
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Ft int
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.Fn efi_variables_supported "void"
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Sh DESCRIPTION
The
.Nm
library implements access to EFI Variables via the EFI Runtime
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
Services.
All
.Vt "char *"
strings are converted to 16-bit UTF strings before passing
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
them to EFI.
.Pp
.Fn efi_variables_supported
returns non-zero if the current machine supports setting of EFI firmware
variables and the kernel support for doing so is present.
Otherwise zero is returned.
.Pp
.Fn efi_del_variable
deletes the EFI variable selected by
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.Va guid
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
and
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.Va name .
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Pp
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
The following functions have not been implemented yet:
.Bl -dash -offset indent -compact
.It
.Fn efi_append_variable
.It
.Fn efi_get_next_variable_name
.It
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Fn efi_get_variable
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.It
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Fn efi_get_variable_attributes
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.It
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Fn efi_get_variable_size
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.It
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Fn efi_guid_to_name
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.It
.Fn efi_guid_to_str
.It
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Fn efi_guid_to_symbol
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.It
.Fn efi_name_to_guid
.It
.Fn efi_set_variable
.It
.Fn efi_str_to_guid
.El
Add efidev(4)/efirt(9) Document efidev(4), provider of userland access to EFI Runtime Services. A link is created to efirtc(4), which handles the time-of-day clock side. efirt(9) is the kernel side of this. Reviewed by: imp, kib (earlier version) Differential Revision: https://reviews.freebsd.org/D16696
2018-08-17 04:17:51 +00:00
.Sh SEE ALSO
.Xr efidev 4
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.Sh HISTORY
The
.Nm
library first appeared in
.Fx 12.0 .
Create libefivar library. This library aims to provide the same API as the GPL'd version of this library. It implements the common Linux API for programatically manipulating UEFI environment varibales using the UEFI Runtime Services the kernel provides. It replaces the old efi library since it is programmed to a different interface, but retails the CHAR16 to UTF-8 and vice versa conversion routines. The new name is to match Linux program's expectations. Differential Revision: https://reviews.freebsd.org/D8128 Reviewed by: kib@, wblock@, Ganael Laplanche
2016-10-11 22:30:41 +00:00
.Sh AUTHORS
.An -nosplit
This software was originally written by
.An Warner Losh .
efivar(3): Fix some typos and improve style - Fix some typos. - Remove redundant semicolons from the synopsis section. - Stylize variable names and types with Vt and Va respectively. - Use a list to present non-implemented functions. - Sort the order of the sections. - Add a history section. - Use Nm when "libefivar" is mentioned. PR: 232626 Reported by: Tiwei Bie <btw@mail.ustc.edu.cn> Reviewed by: bcr, imp Approved by: krion (mentor, implicit), mat (mentor, implicit) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D17686
2018-10-25 15:41:19 +00:00
.Sh BUGS
No facilities exist to process the strings as native UTF.
This is a limitation in the Linux
.Nm
library interface.
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