116 lines
3.2 KiB
Groff
116 lines
3.2 KiB
Groff
.\" 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_getshdr.3 189 2008-07-20 10:38:08Z jkoshy $
|
|
.\"
|
|
.Dd August 27, 2006
|
|
.Os
|
|
.Dt GELF_GETSHDR 3
|
|
.Sh NAME
|
|
.Nm elf32_getshdr ,
|
|
.Nm elf64_getshdr ,
|
|
.Nm gelf_getshdr
|
|
.Nd retrieve the class-dependent section header
|
|
.Sh LIBRARY
|
|
.Lb libelf
|
|
.Sh SYNOPSIS
|
|
.In libelf.h
|
|
.Ft "Elf32_Shdr *"
|
|
.Fn elf32_getshdr "Elf_Scn *scn"
|
|
.Ft "Elf64_Shdr *"
|
|
.Fn elf64_getshdr "Elf_Scn *scn"
|
|
.In gelf.h
|
|
.Ft "GElf_Shdr *"
|
|
.Fn gelf_getshdr "Elf_Scn *scn" "GElf_Shdr *shdr"
|
|
.Sh DESCRIPTION
|
|
These functions return a pointer to the ELF Section Header data
|
|
structure associated with section descriptor
|
|
.Ar scn .
|
|
.Pp
|
|
Function
|
|
.Fn elf32_getshdr
|
|
retrieves a pointer to an
|
|
.Vt Elf32_Shdr
|
|
structure.
|
|
Section descriptor
|
|
.Ar scn
|
|
must be associated with an ELF descriptor of class
|
|
.Dv ELFCLASS32 .
|
|
.Pp
|
|
Function
|
|
.Fn elf64_getshdr
|
|
retrieves a pointer to an
|
|
.Vt Elf64_Shdr
|
|
structure.
|
|
Section descriptor
|
|
.Ar scn
|
|
must be associated with an ELF descriptor of class
|
|
.Dv ELFCLASS64 .
|
|
.Pp
|
|
Function
|
|
.Fn gelf_getshdr
|
|
copies the values in the section header associated with argument
|
|
.Ar scn
|
|
to the structure pointed to be argument
|
|
.Ar dst .
|
|
The
|
|
.Vt GElf_Shdr
|
|
data structure is described in
|
|
.Xr gelf 3 .
|
|
.Sh RETURN VALUES
|
|
Functions
|
|
.Fn elf32_getshdr
|
|
and
|
|
.Fn elf64_getshdr
|
|
return a valid pointer to the appropriate section header on success
|
|
or NULL if an error was encountered.
|
|
.Pp
|
|
Function
|
|
.Fn gelf_getshdr
|
|
returns argument
|
|
.Ar dst
|
|
if successful, or NULL if 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
|
|
Arguments
|
|
.Ar scn
|
|
or
|
|
.Ar shdr
|
|
were NULL.
|
|
.It Bq Er ELF_E_ARGUMENT
|
|
Argument
|
|
.Ar scn
|
|
was not associated a descriptor for an ELF object.
|
|
.It Bq Er ELF_E_CLASS
|
|
The ELF class associated with the section descriptor
|
|
.Ar scn
|
|
did not match the class expected by the API.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr elf 3 ,
|
|
.Xr elf_getscn 3 ,
|
|
.Xr gelf 3 ,
|
|
.Xr gelf_update_shdr 3
|