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Retired Document

Important: This document may not represent best practices for current development. For current information, see About Apple File System.

Tools and APIs

diskutil apfs …

diskutil apfs createContainer /dev/disk1s1

diskutil apfs addVolume disk1s1 APFS newAPFS

hdiutil

hdiutil create -fs APFS -size 1GB foo.sparseimage

fsck_apfs

fsck_apfs

Foundation / FileManager

func copyItem(atPath srcPath: String,

              toPath dstPath: String) throws

func replaceItem(at originalItemURL: URL,

              withItemAt newItemURL: URL,

      backupItemName backupItemName: String?,

                    options options:

          FileManager.ItemReplacementOptions = [],

      resultingItemURL resultingURL:

          AutoreleasingUnsafeMutablePointer<NSURL?>?) throws

libcopyfile

#include <copyfile.h>

int copyfile(const char *from,

             const char *to,

       copyfile_state_t state,

       copyfile_flags_t flags);

int fcopyfile(int from_fd,

             int to_fd,

             copyfile_state_t state,

             copyfile_flags_t flags);

// new flag bit: COPYFILE_CLONE

// equivalent to (COPYFILE_EXCL | COPYFILE_ACL | COPYFILE_STAT | COPYFILE_XATTR | COPYFILE_DATA)

Safe Save APIs

#include <stdio.h>

int renamex_np(const char *, const char *, unsigned int)

int renameatx_np(int, const char *, int, const char *, unsigned int)

Cloning APIs

#include <sys/attr.h>

#include <sys/clonefile.h>

int clonefileat(int, const char *, int, const char *, uint32_t);

int fclonefileat(int, int, const char *, uint32_t);

int clonefile(const char *, const char *, uint32_t);

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