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117 lines
3.3 KiB
Groff
117 lines
3.3 KiB
Groff
.\" Copyright (c) 2006 Joseph Koshy. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" This software is provided by Joseph Koshy ``as is'' and
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.\" any express or implied warranties, including, but not limited to, the
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.\" implied warranties of merchantability and fitness for a particular purpose
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.\" are disclaimed. in no event shall Joseph Koshy be liable
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.\" for any direct, indirect, incidental, special, exemplary, or consequential
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.\" damages (including, but not limited to, procurement of substitute goods
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.\" or services; loss of use, data, or profits; or business interruption)
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.\" however caused and on any theory of liability, whether in contract, strict
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.\" liability, or tort (including negligence or otherwise) arising in any way
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.\" out of the use of this software, even if advised of the possibility of
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.\" such damage.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd December 16, 2006
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.Os
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.Dt ELF_STRPTR 3
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.Sh NAME
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.Nm elf_strptr
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.Nd retrieve a string pointer in a string table
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.Sh LIBRARY
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.Lb libelf
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.Sh SYNOPSIS
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.In libelf.h
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.Ft "char *"
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.Fn elf_strptr "Elf *elf" "size_t scndx" "size_t stroffset"
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.Sh DESCRIPTION
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Function
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.Fn elf_strptr
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allows an application to convert a string table offset to a string
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pointer, correctly translating the offset in the presence
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of multiple
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.Vt Elf_Data
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descriptors covering the contents of the section.
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.Pp
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Argument
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.Ar elf
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is a descriptor for an ELF object.
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Argument
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.Ar scndx
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is the section index for an ELF string table.
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Argument
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.Ar stroffset
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is the index of the desired string in the string
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table.
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.Sh RETURN VALUES
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Function
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.Fn elf_strptr
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returns a valid pointer on success or NULL in case an error was
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encountered.
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.Sh ERRORS
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.Bl -tag -width "[ELF_E_RESOURCE]"
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.It Bq Er ELF_E_ARGUMENT
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Argument
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.Ar elf
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was NULL
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.It Bq Er ELF_E_ARGUMENT
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Argument
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.Ar elf
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was not a descriptor for an ELF object.
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.It Bq Er ELF_E_ARGUMENT
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Argument
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.Ar scndx
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was not the section index for a string table.
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.It Bq Er ELF_E_ARGUMENT
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Argument
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.Ar stroffset
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exceeeded the size of the string table.
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.It Bq Er ELF_E_ARGUMENT
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Argument
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.Ar stroffset
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index an unallocated region of the string table.
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.It Bq Er ELF_E_DATA
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Offset
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.Ar stroffset
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indexed a region that was not covered by any Elf_Data
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descriptor.
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.It Bq Er ELF_E_DATA
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An erroneous
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.Vt Elf_Data
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descriptor was part of the section specified by argument
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.Ar scndx .
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.It Bq Er ELF_E_HEADER
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ELF descriptor
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.Ar elf
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contained an invalid section header.
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.It Bq Er ELF_E_RESOURCE
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An out of memory condition was detected.
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.It Bq Er ELF_E_SECTION
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Section
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.Ar scndx
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contained a malformed section header.
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.It Bq Er ELF_E_SECTION
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The ELF descriptor in argument
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.Ar elf
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did not adhere to the conventions used for extended numbering.
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.El
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.Sh SEE ALSO
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.Xr elf 3 ,
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.Xr elf32_getshdr 3 ,
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.Xr elf64_getshdr 3 ,
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.Xr elf_getdata 3 ,
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.Xr elf_rawdata 3 ,
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.Xr gelf 3 ,
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.Xr gelf_getshdr 3
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