Man page - pmem2_source_alignment(3)
Packages contas this manual
- pmem2_config_set_vdm(3)
- pmem2_get_drain_fn(3)
- pmem2_source_get_fd(3)
- pmem2_config_set_length(3)
- pmem2_vm_reservation_map_find_prev(3)
- pmem2_deep_flush(3)
- pmem2_source_from_fd(3)
- libpmem2_unsafe_shutdown(7)
- pmem2_source_pread_mcsafe(3)
- pmem2_async(3)
- pmem2_config_set_sharing(3)
- pmem2_badblock_next(3)
- pmem2_source_from_anon(3)
- pmem2_source_get_handle(3)
- pmem2_source_device_id(3)
- pmem2_map_get_size(3)
- pmem2_config_delete(3)
- pmem2_map_get_address(3)
- pmem2_source_alignment(3)
- pmem2_source_device_usc(3)
- pmem2_config_set_vm_reservation(3)
- pmem2_get_flush_fn(3)
- pmem2_config_set_protection(3)
- pmem2_vm_reservation_new(3)
- pmem2_get_memset_fn(3)
- pmem2_badblock_context_delete(3)
- pmem2_config_new(3)
- pmem2_vm_reservation_delete(3)
- pmem2_vm_reservation_get_address(3)
- pmem2_source_size(3)
- pmem2_vm_reservation_shrink(3)
- pmem2_memcpy_async(3)
- pmem2_vm_reservation_map_find(3)
- pmem2_vm_reservation_map_find_last(3)
- pmem2_badblock_clear(3)
- pmem2_memset_async(3)
- pmem2_map_get_store_granularity(3)
- pmem2_memmove_async(3)
- pmem2_get_persist_fn(3)
- pmem2_vm_reservation_map_find_next(3)
- pmem2_vm_reservation_map_find_first(3)
- pmem2_source_pwrite_mcsafe(3)
- pmem2_get_memcpy_fn(3)
- pmem2_map_from_existing(3)
- pmem2_map_new(3)
- pmem2_get_memmove_fn(3)
- pmem2_config_set_required_store_granularity(3)
- pmem2_config_set_offset(3)
- pmem2_source_from_handle(3)
- libpmem2(7)
- pmem2_perror(3)
- pmem2_map_delete(3)
- pmem2_badblock_context_new(3)
- pmem2_vm_reservation_extend(3)
- pmem2_source_delete(3)
- pmem2_source_numa_node(3)
- pmem2_errormsg(3)
- pmem2_vm_reservation_get_size(3)
Package: libpmem2-dev
apt-get install libpmem2-dev
apt-get install libpmem2-dev
Manuals in package:
Documentations in package:
Manual
| () | PMDK Programmer's Manual | () |
NAME
pmem2_source_alignment() - returns data source alignment
SYNOPSIS
-
#include <libpmem2.h> struct pmem2_source; int pmem2_source_alignment(const struct pmem2_source *source, size_t *alignment);
DESCRIPTION
The pmem2_source_alignment() function retrieves the alignment of offset and length needed for pmem2_map_new(3) to succeed. The alignment is stored in *alignment.
RETURN VALUE
The pmem2_source_alignment() function returns 0 on success. If the function fails, the *alignment variable is left unmodified and a negative error code is returned.
ERRORS
The pmem2_source_alignment() can fail with the following errors:
On all systems:
- •
- PMEM2_E_INVALID_ALIGNMENT_VALUE - operating system returned unexpected alignment value (eg. it is not a power of two).
on Linux:
- •
- PMEM2_E_INVALID_FILE_TYPE - file descriptor points to a character device other than Device DAX.
- •
- PMEM2_E_INVALID_ALIGNMENT_FORMAT - kernel query for Device DAX alignment returned data in invalid format.
- •
- -errno set by failing fstat(2), while trying to validate the file descriptor.
- •
- -errno set by failing realpath(3), while trying to determine whether fd points to a Device DAX.
- •
- -errno set by failing read(2), while trying to determine Device DAX’s alignment.
- •
- -errno set by failing strtoull(3), while trying to determine Device DAX’s alignment.
On FreeBSD:
- •
- PMEM2_E_INVALID_FILE_TYPE - file descriptor points to a directory, block device, pipe, socket, or character device.
- •
- -errno set by failing fstat(2), while trying to validate the file descriptor.
SEE ALSO
errno(3), fstat(2), realpath(3), read(2), strtoull(3), pmem2_config_new(3), pmem2_source_from_handle(3), pmem2_source_from_fd(3), libpmem2(7) and <https://pmem.io>
| 2023-05-31 | PMDK - |