freebsd-src/contrib/elftoolchain/libelf/elf_getbase.3
Ed Maste ae500c1ff8 Update to ELF Tool Chain r3668
Highlights:
- Make sure that only TLS sections are sorted into TLS segment.
- Fixed multiple errors in "Section to Segment mapping".
- Man page updates
- ar improvements
- elfcopy: avoid filter_reloc uninitialized variable for rela
- elfcopy: avoid stripping relocations from static binaries
- readelf: avoid printing directory in front of absolute path
- readelf: add NT_FREEBSD_FEATURE_CTL FreeBSD note type
- test improvements

NOTES:

Some of these changes originated in FreeBSD and simply reduce diffs
between contrib and vendor.

ELF Tool Chain ar is not (currently) used in FreeBSD, and there are
improvements in both FreeBSD and ELF Tool Chain ar that are not in
the other.

Sponsored by:	The FreeBSD Foundation
2019-01-10 14:35:23 +00:00

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.\" Copyright (c) 2006,2008,2010 Joseph Koshy. All rights reserved.
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.\" $Id: elf_getbase.3 3639 2018-10-14 14:07:02Z jkoshy $
.\"
.Dd June 6, 2010
.Dt ELF_GETBASE 3
.Os
.Sh NAME
.Nm elf_getbase
.Nd get the base offset for an object file
.Sh LIBRARY
.Lb libelf
.Sh SYNOPSIS
.In libelf.h
.Ft off_t
.Fn elf_getbase "Elf *elf"
.Sh DESCRIPTION
Function
.Fn elf_getbase
returns the file offset to the first byte of the object referenced by ELF
descriptor
.Ar elf .
.Pp
For descriptors referencing members of archives, the returned offset is
the file offset of the member in its containing archive.
For descriptors to regular objects, the returned offset is (vacuously)
zero.
.Sh RETURN VALUES
Function
.Fn elf_getbase
returns a valid file offset if successful, or
.Pq Vt off_t
.Li -1
in case of an error.
.Sh ERRORS
Function
.Fn elf_getbase
may fail with the following errors:
.Bl -tag -width "[ELF_E_RESOURCE]"
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was NULL.
.El
.Sh SEE ALSO
.Xr elf 3 ,
.Xr elf_getarhdr 3 ,
.Xr elf_getident 3 ,
.Xr elf_rawfile 3 ,
.Xr gelf 3