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libvslvm(3) Library Functions Manual libvslvm(3)

NAME

libvslvm.h — Library to access the Linux Logical Volume Manager (LVM) volume system

LIBRARY

library “libvslvm”

SYNOPSIS

#include <libvslvm.h>

Support functions
const char *
libvslvm_get_version(void);

int
libvslvm_get_access_flags_read_write(void);

int
libvslvm_get_access_flags_write(void);

int
libvslvm_get_codepage(int *codepage, libvslvm_error_t **error);

int
libvslvm_set_codepage(int codepage, libvslvm_error_t **error);

int
libvslvm_check_volume_signature(const char *filename, libvslvm_error_t **error);

Available when compiled with wide character string support:
int
libvslvm_check_volume_signature_wide(const wchar_t *filename, libvslvm_error_t **error);

Available when compiled with libbfio support:
int
libvslvm_check_volume_signature_file_io_handle(libbfio_handle_t *file_io_handle, libvslvm_error_t **error);

Notify functions
void
libvslvm_notify_set_verbose(int verbose);

int
libvslvm_notify_set_stream(FILE *stream, libvslvm_error_t **error);

int
libvslvm_notify_stream_open(const char *filename, libvslvm_error_t **error);

int
libvslvm_notify_stream_close(libvslvm_error_t **error);

Error functions
void
libvslvm_error_free(libvslvm_error_t **error);

int
libvslvm_error_fprint(libvslvm_error_t *error, FILE *stream);

int
libvslvm_error_sprint(libvslvm_error_t *error, char *string, size_t size);

int
libvslvm_error_backtrace_fprint(libvslvm_error_t *error, FILE *stream);

int
libvslvm_error_backtrace_sprint(libvslvm_error_t *error, char *string, size_t size);

Handle functions
int
libvslvm_handle_initialize(libvslvm_handle_t **handle, libvslvm_error_t **error);

int
libvslvm_handle_free(libvslvm_handle_t **handle, libvslvm_error_t **error);

int
libvslvm_handle_signal_abort(libvslvm_handle_t *handle, libvslvm_error_t **error);

int
libvslvm_handle_open(libvslvm_handle_t *handle, const char *filename, int access_flags, libvslvm_error_t **error);

int
libvslvm_handle_open_physical_volume_files(libvslvm_handle_t *handle, char * const filenames[], int number_of_filenames, libvslvm_error_t **error);

int
libvslvm_handle_close(libvslvm_handle_t *handle, libvslvm_error_t **error);

int
libvslvm_handle_get_volume_group(libvslvm_handle_t *handle, libvslvm_volume_group_t **volume_group, libvslvm_error_t **error);

Available when compiled with wide character string support:
int
libvslvm_handle_open_wide(libvslvm_handle_t *handle, const wchar_t *filename, int access_flags, libvslvm_error_t **error);

int
libvslvm_handle_open_physical_volume_files_wide(libvslvm_handle_t *handle, wchar_t * const filenames[], int number_of_filenames, libvslvm_error_t **error);

Available when compiled with libbfio support:
int
libvslvm_handle_open_file_io_handle(libvslvm_handle_t *handle, libbfio_handle_t *file_io_handle, int access_flags, libvslvm_error_t **error);

int
libvslvm_handle_open_physical_volume_files_file_io_pool(libvslvm_handle_t *handle, libbfio_pool_t *file_io_pool, libvslvm_error_t **error);

Volume group functions
int
libvslvm_volume_group_free(libvslvm_volume_group_t **volume_group, libvslvm_error_t **error);

int
libvslvm_volume_group_get_name_size(libvslvm_volume_group_t *volume_group, size_t *name_size, libvslvm_error_t **error);

int
libvslvm_volume_group_get_name(libvslvm_volume_group_t *volume_group, char *name, size_t name_size, libvslvm_error_t **error);

int
libvslvm_volume_group_get_identifier_size(libvslvm_volume_group_t *volume_group, size_t *identifier_size, libvslvm_error_t **error);

int
libvslvm_volume_group_get_identifier(libvslvm_volume_group_t *volume_group, char *identifier, size_t identifier_size, libvslvm_error_t **error);

int
libvslvm_volume_group_get_sequence_number(libvslvm_volume_group_t *volume_group, uint32_t *sequence_number, libvslvm_error_t **error);

int
libvslvm_volume_group_get_extent_size(libvslvm_volume_group_t *volume_group, size64_t *extent_size, libvslvm_error_t **error);

int
libvslvm_volume_group_get_number_of_physical_volumes(libvslvm_volume_group_t *volume_group, int *number_of_physical_volumes, libvslvm_error_t **error);

int
libvslvm_volume_group_get_physical_volume(libvslvm_volume_group_t *volume_group, int volume_index, libvslvm_physical_volume_t **physical_volume, libvslvm_error_t **error);

int
libvslvm_volume_group_get_physical_volume_by_name(libvslvm_volume_group_t *volume_group, const char *volume_name, size_t volume_name_length, libvslvm_physical_volume_t **physical_volume, libvslvm_error_t **error);

int
libvslvm_volume_group_get_number_of_logical_volumes(libvslvm_volume_group_t *volume_group, int *number_of_logical_volumes, libvslvm_error_t **error);

int
libvslvm_volume_group_get_logical_volume(libvslvm_volume_group_t *volume_group, int volume_index, libvslvm_logical_volume_t **logical_volume, libvslvm_error_t **error);

Physical volume functions
int
libvslvm_physical_volume_free(libvslvm_physical_volume_t **physical_volume, libvslvm_error_t **error);

int
libvslvm_physical_volume_get_name_size(libvslvm_physical_volume_t *physical_volume, size_t *name_size, libvslvm_error_t **error);

int
libvslvm_physical_volume_get_name(libvslvm_physical_volume_t *physical_volume, char *name, size_t name_size, libvslvm_error_t **error);

int
libvslvm_physical_volume_get_identifier_size(libvslvm_physical_volume_t *physical_volume, size_t *identifier_size, libvslvm_error_t **error);

int
libvslvm_physical_volume_get_identifier(libvslvm_physical_volume_t *physical_volume, char *identifier, size_t identifier_size, libvslvm_error_t **error);

int
libvslvm_physical_volume_get_device_path_size(libvslvm_physical_volume_t *physical_volume, size_t *device_path_size, libvslvm_error_t **error);

int
libvslvm_physical_volume_get_device_path(libvslvm_physical_volume_t *physical_volume, char *device_path, size_t device_path_size, libvslvm_error_t **error);

int
libvslvm_physical_volume_get_size(libvslvm_physical_volume_t *physical_volume, size64_t *size, libvslvm_error_t **error);

Logical volume functions
int
libvslvm_logical_volume_free(libvslvm_logical_volume_t **logical_volume, libvslvm_error_t **error);

ssize_t
libvslvm_logical_volume_read_buffer(libvslvm_logical_volume_t *logical_volume, void *buffer, size_t buffer_size, libvslvm_error_t **error);

ssize_t
libvslvm_logical_volume_read_buffer_at_offset(libvslvm_logical_volume_t *logical_volume, void *buffer, size_t buffer_size, off64_t offset, libvslvm_error_t **error);

off64_t
libvslvm_logical_volume_seek_offset(libvslvm_logical_volume_t *logical_volume, off64_t offset, int whence, libvslvm_error_t **error);

int
libvslvm_logical_volume_get_offset(libvslvm_logical_volume_t *logical_volume, off64_t *offset, libvslvm_error_t **error);

int
libvslvm_logical_volume_get_size(libvslvm_logical_volume_t *logical_volume, size64_t *size, libvslvm_error_t **error);

int
libvslvm_logical_volume_get_name_size(libvslvm_logical_volume_t *logical_volume, size_t *name_size, libvslvm_error_t **error);

int
libvslvm_logical_volume_get_name(libvslvm_logical_volume_t *logical_volume, char *name, size_t name_size, libvslvm_error_t **error);

int
libvslvm_logical_volume_get_identifier_size(libvslvm_logical_volume_t *logical_volume, size_t *identifier_size, libvslvm_error_t **error);

int
libvslvm_logical_volume_get_identifier(libvslvm_logical_volume_t *logical_volume, char *identifier, size_t identifier_size, libvslvm_error_t **error);

int
libvslvm_logical_volume_get_number_of_segments(libvslvm_logical_volume_t *logical_volume, int *number_of_segments, libvslvm_error_t **error);

int
libvslvm_logical_volume_get_segment(libvslvm_logical_volume_t *logical_volume, int segment_index, libvslvm_segment_t **segment, libvslvm_error_t **error);

Segment functions
int
libvslvm_segment_free(libvslvm_segment_t **segment, libvslvm_error_t **error);

int
libvslvm_segment_get_offset(libvslvm_segment_t *segment, off64_t *offset, libvslvm_error_t **error);

int
libvslvm_segment_get_size(libvslvm_segment_t *segment, size64_t *size, libvslvm_error_t **error);

int
libvslvm_segment_get_number_of_stripes(libvslvm_segment_t *segment, int *number_of_stripes, libvslvm_error_t **error);

int
libvslvm_segment_get_stripe(libvslvm_segment_t *segment, int stripe_index, libvslvm_stripe_t **stripe, libvslvm_error_t **error);

Stripe functions
int
libvslvm_stripe_free(libvslvm_stripe_t **stripe, libvslvm_error_t **error);

int
libvslvm_stripe_get_physical_volume_name_size(libvslvm_stripe_t *stripe, size_t *physical_volume_name_size, libvslvm_error_t **error);

int
libvslvm_stripe_get_physical_volume_name(libvslvm_stripe_t *stripe, char *physical_volume_name, size_t physical_volume_name_size, libvslvm_error_t **error);

int
libvslvm_stripe_get_data_area_offset(libvslvm_stripe_t *stripe, off64_t *data_area_offset, libvslvm_error_t **error);

DESCRIPTION

The () function is used to retrieve the library version.

RETURN VALUES

Most of the functions return NULL or -1 on error, dependent on the return type. For the actual return values see "libvslvm.h".

ENVIRONMENT

None

FILES

None

NOTES

libvslvm allows to be compiled with wide character support (wchar_t).

To compile libvslvm with wide character support use: ./configure --enable-wide-character-type=yes
or define: _UNICODE
or UNICODE
during compilation.

LIBVSLVM_WIDE_CHARACTER_TYPE
in libvslvm/features.h can be used to determine if libvslvm was compiled with wide character support.

BUGS

Please report bugs of any kind on the project issue tracker: https://github.com/libyal/libvslvm/issues

AUTHOR

These man pages are generated from "libvslvm.h".

COPYRIGHT

Copyright (C) 2014-2018, Joachim Metz <joachim.metz@gmail.com>.

This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SEE ALSO

the libvslvm.h include file

January 9, 2016 libvslvm