.\" Automatically generated by Pandoc 2.0.6
.\"
.TH "PMEM2_CONFIG_SET_OFFSET" "3" "2022-08-25" "PMDK - pmem2 API version 1.0" "PMDK Programmer's Manual"
.hy
.\" SPDX-License-Identifier: BSD-3-Clause
.\" Copyright 2020, Intel Corporation
.SH NAME
.PP
\f[B]pmem2_config_set_offset\f[]() \- set offset in the pmem2_config
structure
.SH SYNOPSIS
.IP
.nf
\f[C]
#include\ <libpmem2.h>

struct\ pmem2_config;
int\ pmem2_config_set_offset(struct\ pmem2_config\ *config,\ size_t\ offset);
\f[]
.fi
.SH DESCRIPTION
.PP
The \f[B]pmem2_config_set_offset\f[]() function configures the offset
which will be used to map the contents from the specified location of
the source.
\f[I]*config\f[] should be already initialized, please see
\f[B]pmem2_config_new\f[](3) for details.
The \f[I]must be a multiple of the alignment required for the config.
The alignment requirements are specific to a data source. To retrieve
the alignment required for specific instance of \f[]pmem2_source** use
\f[B]pmem2_source_alignment\f[](3).
By default, the offset is 0.
.SH RETURN VALUE
.PP
The \f[B]pmem2_config_set_offset\f[]() function returns 0 on success or
a negative error code on failure.
.SH ERRORS
.PP
The \f[B]pmem2_config_set_offset\f[]() can fail with the following
errors:
.IP \[bu] 2
\f[B]PMEM2_E_OFFSET_OUT_OF_RANGE\f[] \- argument out of range, offset is
greater than \f[B]INT64_MAX\f[]
.SH SEE ALSO
.PP
\f[B]libpmem2\f[](7), \f[B]pmem2_source_alignment\f[](3),
\f[B]pmem2_config_new\f[](3), \f[B]pmem2_map_new\f[](3),
\f[B]sysconf\f[](3) and \f[B]<https://pmem.io>\f[]