mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
cd9e086e93
- make document title match filename; - remove hard sentence breaks, whitespace at EOL, and double whitespace; - sort SEE ALSO xrefs, adding missing section numbers; - fix a misspelled macro name.
112 lines
3.1 KiB
Groff
112 lines
3.1 KiB
Groff
.\" Copyright (c) 2006 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd August 9, 2006
|
|
.Os
|
|
.Dt ELF_CNTL 3
|
|
.Sh NAME
|
|
.Nm elf_cntl
|
|
.Nd control an elf file descriptor
|
|
.Sh LIBRARY
|
|
.Lb libelf
|
|
.Sh SYNOPSIS
|
|
.In libelf.h
|
|
.Ft int
|
|
.Fn elf_cntl "Elf *elf" "Elf_Cmd cmd"
|
|
.Sh DESCRIPTION
|
|
Function
|
|
.Fn elf_cntl
|
|
controls the ELF library's subsequent use of the file descriptor
|
|
used to create ELF descriptor
|
|
.Ar elf .
|
|
.Pp
|
|
Argument
|
|
.Ar cmd
|
|
informs the library of the action to be taken:
|
|
.Bl -tag -width "ELF_C_FDDONE"
|
|
.It Dv ELF_C_FDDONE
|
|
This value instructs the ELF library not to perform any further
|
|
I/O on the file descriptor associated with argument
|
|
.Ar elf .
|
|
For ELF descriptors opened with mode
|
|
.Ar ELF_C_WRITE
|
|
or
|
|
.Ar ELF_C_RDWR
|
|
subsequent
|
|
.Fn elf_update
|
|
operations on the descriptor will fail.
|
|
.It Dv ELF_C_FDREAD
|
|
This value instructs the ELF library to read in all necessary
|
|
data associated with ELF descriptor
|
|
.Ar elf
|
|
into memory so that the underlying file descriptor can be
|
|
safely closed with command
|
|
.Dv ELF_C_FDDONE .
|
|
.El
|
|
.Pp
|
|
Argument
|
|
.Ar elf
|
|
must be an ELF descriptor associated with a file system object
|
|
(e.g., an
|
|
.Xr ar 1
|
|
archive, an ELF file, or other data file).
|
|
.Sh IMPLEMENTATION NOTES
|
|
Due to use of
|
|
.Xr mmap 2
|
|
internally, this function is a no-op for for ELF objects opened in
|
|
.Dv ELF_C_READ
|
|
mode.
|
|
.Sh RETURN VALUES
|
|
Function
|
|
.Fn elf_cntl
|
|
returns 0 on success, or -1 if an error was detected.
|
|
.Sh ERRORS
|
|
.Bl -tag -width "[ELF_E_RESOURCE]"
|
|
.It Bq Er ELF_E_ARCHIVE
|
|
Argument
|
|
.Ar elf
|
|
is a descriptor for an archive member.
|
|
.It Bq Er ELF_E_ARGUMENT
|
|
Argument
|
|
.Ar elf
|
|
was NULL.
|
|
.It Bq Er ELF_E_ARGUMENT
|
|
Argument
|
|
.Ar cmd
|
|
was not recognized.
|
|
.It Bq Er ELF_E_MODE
|
|
An
|
|
.Dv ELF_C_FDREAD
|
|
operation was requested on an ELF descriptor opened
|
|
for writing.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr elf 3 ,
|
|
.Xr elf_begin 3 ,
|
|
.Xr elf_end 3 ,
|
|
.Xr elf_next 3 ,
|
|
.Xr elf_update 3 ,
|
|
.Xr gelf 3
|