freebsd-dev/lib/libelf/elf_getphdrnum.3
Kai Wang 86f5401b91 * Deprecate elf_getshnum(), elf_getphnum() and elf_getshstrndx() in
favour of `elf_getshdrnum()`, `elf_getphdrnum()` and `elf_getshdrstrndx()`
  respectively.
* Add new manual pages for `elf_getshdrstrndx()`, `elf_getphdrnum()` and
  `elf_getshdrnum()`.
* Add a deprecation warning for `elf_getshstrndx()`, `elf_getphnum()` and
  `elf_getshnum()`.

Obtained from:	elftoolchain
MFC after:		1 month
2010-07-21 12:14:50 +00:00

87 lines
2.6 KiB
Groff

.\" Copyright (c) 2006,2008 Joseph Koshy. All rights reserved.
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.\" $FreeBSD$
.\"
.Dd August 5, 2009
.Os
.Dt ELF_GETPHDRNUM 3
.Sh NAME
.Nm elf_getphdrnum
.Nd return the number of program headers in an ELF file
.Sh LIBRARY
.Lb libelf
.Sh SYNOPSIS
.In libelf.h
.Ft int
.Fn elf_getphdrnum "Elf *elf" "size_t *phnum"
.Sh DESCRIPTION
Function
.Fn elf_getphdrnum
retrieves the number of ELF program headers associated with descriptor
.Ar elf
and stores it into the location pointed to by argument
.Ar phnum .
.Pp
This routine allows applications to uniformly process both normal ELF
objects and ELF objects that use extended numbering.
.Pp
.Sh RETURN VALUES
Function
.Fn elf_getphdrnum
returns a zero value if successful, or -1 in case of an error.
.Sh ERRORS
Function
.Fn elf_getphnum
can fail with the following errors:
.Bl -tag -width "[ELF_E_RESOURCE]"
.It Bq Er ELF_E_ARGUMENT
A NULL value was passed in for argument
.Ar elf .
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was not for an ELF file.
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
lacks an ELF Executable Header.
.It Bq Er ELF_E_HEADER
The ELF Executable Header associated with argument
.Ar elf
was corrupt.
.It Bq Er ELF_E_SECTION
The section header at index
.Dv SHN_UNDEF
was corrupt.
.El
.Sh SEE ALSO
.Xr elf 3 ,
.Xr elf32_getehdr 3 ,
.Xr elf64_getehdr 3 ,
.Xr elf_getident 3 ,
.Xr elf_getshdrnum 3 ,
.Xr elf_getshdrstrndx 3 ,
.Xr gelf 3 ,
.Xr gelf_getehdr 3