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-.\" Copyright (c) 2006,2008 Joseph Koshy. 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 Joseph Koshy ``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 Joseph Koshy 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.
-.\"
-.\" $Id: gelf_checksum.3 189 2008-07-20 10:38:08Z jkoshy $
-.\"
-.Dd August 29, 2006
-.Os
-.Dt GELF_CHECKSUM 3
-.Sh NAME
-.Nm elf32_checksum ,
-.Nm elf64_checksum ,
-.Nm gelf_checksum
-.Nd return the checksum of an ELF object
-.Sh LIBRARY
-.Lb libelf
-.Sh SYNOPSIS
-.In libelf.h
-.Ft long
-.Fn elf32_checksum "Elf *elf"
-.Ft long
-.Fn elf64_checksum "Elf *elf"
-.In gelf.h
-.Ft long
-.Fn gelf_checksum "Elf *elf"
-.Sh DESCRIPTION
-These functions return a simple checksum of the ELF object described
-by their argument
-.Ar elf .
-The checksum is computed in way that allows its value to remain
-unchanged in presence of modifications to the ELF object by utilities
-like
-.Xr strip 1 .
-.Pp
-Function
-.Fn elf32_checksum
-returns a checksum for an ELF descriptor
-.Ar elf
-of class
-.Dv ELFCLASS32 .
-.Pp
-Function
-.Fn elf64_checksum
-returns a checksum for an ELF descriptor
-.Ar elf
-of class
-.Dv ELFCLASS64 .
-.Pp
-Function
-.Fn gelf_checksum
-provides a class-independent way retrieving the checksum
-for ELF object
-.Ar elf .
-.Sh RETURN VALUES
-These functions return the checksum of the ELF object, or zero in case
-an error was encountered.
-.Sh ERRORS
-These functions may fail with the following errors:
-.Bl -tag -width "[ELF_E_RESOURCE]"
-.It Bq Er ELF_E_ARGUMENT
-Argument
-.Ar elf
-was NULL.
-.It Bq Er ELF_E_ARGUMENT
-Argument
-.Ar elf
-was not a descriptor for an ELF file.
-.It Bq Er ELF_E_ARGUMENT
-The ELF descriptor
-.Ar elf
-was not opened for reading or updating.
-.It Bq Er ELF_E_CLASS
-For functions
-.Fn elf32_checksum
-and
-.Fn elf64_checksum ,
-ELF descriptor
-.Ar elf
-did not match the class of the called function.
-.It Bq Er ELF_E_HEADER
-The ELF object specified by argument
-.Ar elf
-had a malformed executable header.
-.It Bq Er ELF_E_RESOURCE
-An out of memory condition was detected during processing.
-.It Bq Er ELF_E_SECTION
-The ELF object specified by argument
-.Ar elf
-contained a section with a malformed section header.
-.It Bq Er ELF_E_VERSION
-The ELF object was of an unsupported version.
-.El
-.Sh SEE ALSO
-.Xr strip 1 ,
-.Xr elf 3 ,
-.Xr gelf 3