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\" Id: gelf_getshdr.3 3958 2022-03-12 14:31:32Z jkoshy
\"
Dd August 27, 2006
Dt GELF_GETSHDR 3
Os
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
Fa scn .
Pp
Function
Fn elf32_getshdr
retrieves a pointer to an
Vt Elf32_Shdr
structure.
Section descriptor
Fa 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
Fa 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
Fa scn
to the structure pointed to be argument
Fa 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
Dv NULL
if an error was encountered.
Pp
Function
Fn gelf_getshdr
returns argument
Fa dst
if successful, or
Dv 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
Fa scn
or
Fa shdr
were
Dv NULL .
It Bq Er ELF_E_ARGUMENT
Argument
Fa scn
was not associated a descriptor for an ELF object.
It Bq Er ELF_E_CLASS
The ELF class associated with the section descriptor
Fa 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

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