#include <dirent.h>
#include <daos.h>
#include <daos_fs.h>

Macros
#define	DFS_SYS_NO_CACHE 1

#define	DFS_SYS_NO_LOCK 2

Typedefs
typedef struct dfs_sys	dfs_sys_t

Functions
int	dfs_sys_connect (const char pool, const char sys, const char cont, int mflags, int sflags, dfs_attr_t attr, dfs_sys_t **dfs_sys)

int	dfs_sys_disconnect (dfs_sys_t *dfs_sys)

int	dfs_sys_local2global_all (dfs_sys_t dfs_sys, d_iov_t glob)

int	dfs_sys_global2local_all (int mflags, int sflags, d_iov_t glob, dfs_sys_t **dfs_sys)

int	dfs_sys_mount (daos_handle_t poh, daos_handle_t coh, int mflags, int sflags, dfs_sys_t **dfs_sys)

int	dfs_sys_umount (dfs_sys_t *dfs_sys)

int	dfs_sys_local2global (dfs_sys_t dfs_sys, d_iov_t glob)

int	dfs_sys_global2local (daos_handle_t poh, daos_handle_t coh, int mflags, int sflags, d_iov_t glob, dfs_sys_t **dfs_sys)

int	dfs_sys2base (dfs_sys_t dfs_sys, dfs_t *dfs)

int	dfs_sys_access (dfs_sys_t dfs_sys, const char path, int mask, int flags)

int	dfs_sys_chmod (dfs_sys_t dfs_sys, const char path, mode_t mode)

int	dfs_sys_chown (dfs_sys_t dfs_sys, const char path, uid_t uid, gid_t gid, int flags)

int	dfs_sys_setattr (dfs_sys_t dfs_sys, const char path, struct stat *stbuf, int flags, int sflags)

int	dfs_sys_utimens (dfs_sys_t dfs_sys, const char path, const struct timespec times[2], int flags)

int	dfs_sys_stat (dfs_sys_t dfs_sys, const char path, int flags, struct stat *stbuf)

int	dfs_sys_mknod (dfs_sys_t dfs_sys, const char path, mode_t mode, daos_oclass_id_t cid, daos_size_t chunk_size)

int	dfs_sys_listxattr (dfs_sys_t dfs_sys, const char path, char list, daos_size_t size, int flags)

int	dfs_sys_getxattr (dfs_sys_t dfs_sys, const char path, const char name, void value, daos_size_t *size, int flags)

int	dfs_sys_setxattr (dfs_sys_t dfs_sys, const char path, const char name, const void value, daos_size_t size, int flags, int sflags)

int	dfs_sys_removexattr (dfs_sys_t dfs_sys, const char path, const char *name, int flags)

int	dfs_sys_readlink (dfs_sys_t dfs_sys, const char path, char buf, daos_size_t size)

int	dfs_sys_symlink (dfs_sys_t dfs_sys, const char target, const char *path)

int	dfs_sys_open (dfs_sys_t dfs_sys, const char path, mode_t mode, int flags, daos_oclass_id_t cid, daos_size_t chunk_size, const char value, dfs_obj_t *obj)

int	dfs_sys_close (dfs_obj_t *obj)

int	dfs_sys_read (dfs_sys_t dfs_sys, dfs_obj_t obj, void buf, daos_off_t off, daos_size_t size, daos_event_t *ev)

int	dfs_sys_write (dfs_sys_t dfs_sys, dfs_obj_t obj, const void buf, daos_off_t off, daos_size_t size, daos_event_t *ev)

int	dfs_sys_punch (dfs_sys_t dfs_sys, const char path, daos_off_t offset, daos_off_t len)

int	dfs_sys_remove (dfs_sys_t dfs_sys, const char path, bool force, daos_obj_id_t *oid)

int	dfs_sys_remove_type (dfs_sys_t dfs_sys, const char path, bool force, mode_t mode, daos_obj_id_t *oid)

int	dfs_sys_mkdir (dfs_sys_t dfs_sys, const char dir, mode_t mode, daos_oclass_id_t cid)

int	dfs_sys_opendir (dfs_sys_t dfs_sys, const char dir, int flags, DIR **dirp)

int	dfs_sys_closedir (DIR *dirp)

int	dfs_sys_readdir (dfs_sys_t dfs_sys, DIR dirp, struct dirent **dirent)

Detailed Description

SPDX-License-Identifier: BSD-2-Clause-Patent

DAOS File System "Sys" API

The DFS Sys API provides a simplified layer directly on top of the DFS API that is more similar to the equivalent POSIX libraries. While the DFS Sys API stands on its own, the DFS API can be used directly by getting the DFS Object with dfs_sys2base().

Definition in file daos_fs_sys.h.

Macro Definition Documentation

◆ DFS_SYS_NO_CACHE

#define DFS_SYS_NO_CACHE 1

Mount flags for dfs_sys_mount. By default, mount with caching and locking turned on. Turn off directory caching

Definition at line 29 of file daos_fs_sys.h.

◆ DFS_SYS_NO_LOCK

#define DFS_SYS_NO_LOCK 2

Turn off locking. Useful for single-threaded applications.

Definition at line 30 of file daos_fs_sys.h.

Typedef Documentation

◆ dfs_sys_t

typedef struct dfs_sys dfs_sys_t

struct holding attributes for the dfs_sys calls

Definition at line 33 of file daos_fs_sys.h.

Function Documentation

◆ dfs_sys2base()

int dfs_sys2base	(	dfs_sys_t *	dfs_sys,
		dfs_t **	dfs )

Get the underlying dfs_t from the dfs_sys_t. This should not be closed with dfs_umount().

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[out]	dfs	Pointer to the underlying dfs_t.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_access()

int dfs_sys_access	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		int	mask,
		int	flags )

Check access permissions on a path. Similar to Linux access(2). By default, symlinks are dereferenced.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	mask	accessibility check(s) to be performed. It should be either the value F_OK, or a mask with bitwise OR of one or more of R_OK, W_OK, and X_OK.
[in]	flags	Access flags (O_NOFOLLOW).

Returns: 0 on success, errno code on failure.

◆ dfs_sys_chmod()

int dfs_sys_chmod	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		mode_t	mode )

Change permission access bits. Symlinks are dereferenced.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	mode	New permission access modes. For now, we don't support the sticky bit, setuid, and setgid.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_chown()

int dfs_sys_chown	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		uid_t	uid,
		gid_t	gid,
		int	flags )

Change owner/group. Symlinks are dereferenced. Since uid and gid are not enforced at the DFS level, we do not also enforce the process privileges to be able to change the uid and gid. Any process with write access to the DFS container can make changes to the uid and gid using this function.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	uid	change owner of file (-1 to leave unchanged).
[in]	gid	change group of file (-1 to leave unchanged).
[in]	flags	(O_NOFOLLOW)

Returns: 0 on success, errno code on failure.

◆ dfs_sys_close()

int dfs_sys_close ( dfs_obj_t * obj )

Close/release open object.

Parameters

[in] obj Object to release.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_closedir()

int dfs_sys_closedir ( DIR * dirp )

Close a directory opened with dfs_sys_opendir().

Parameters

[in] dirp Pointer to the open directory.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_connect()

int dfs_sys_connect	(	const char *	pool,
		const char *	sys,
		const char *	cont,
		int	mflags,
		int	sflags,
		dfs_attr_t *	attr,
		dfs_sys_t **	dfs_sys )

Wrapper around dfs_connect for the dfs_sys API.

Parameters

[in]	pool	Pool label.
[in]	sys	DAOS system name to use for the pool connect. Pass NULL to use the default system.
[in]	cont	Container label.
[in]	mflags	Mount flags (O_RDONLY or O_RDWR, O_CREAT). O_CREAT attempts to create the DFS container if it doesn't exists.
[in]	sflags	Sys flags (DFS_SYS_NO_CACHE or DFS_SYS_NO_LOCK)
[in]	attr	Optional set of properties and attributes to set on the container (if being created). Pass NULL to use default.
[out]	dfs_sys	Pointer to the file system object created.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_disconnect()

int dfs_sys_disconnect ( dfs_sys_t * dfs_sys )

Umount the DFS sys namespace, and release the ref count on the container and pool handles. This should be called on a dfs_sys mount created with dfs_sys_connect() and not dfs_sys_mount().

Parameters

[in] dfs_sys Pointer to the mounted file system from dfs_sys_connect().

Returns: 0 on success, errno code on failure.

◆ dfs_sys_getxattr()

int dfs_sys_getxattr	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		const char *	name,
		void *	value,
		daos_size_t *	size,
		int	flags )

Get extended attribute of a path. By default, if path is a symlink, the link itself is interrogated.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	name	Name of xattr to get.
[out]	value	Buffer to place value of xattr.
[in,out]	size	[in]: Size of buffer value. [out]: Actual size of xattr.
[in]	flags	(O_NOFOLLOW)

Returns: 0 on success, errno code on failure. ERANGE If size is too small.

◆ dfs_sys_global2local()

int dfs_sys_global2local	(	daos_handle_t	poh,
		daos_handle_t	coh,
		int	mflags,
		int	sflags,
		d_iov_t	glob,
		dfs_sys_t **	dfs_sys )

Create a dfs_sys mount from global representation data. This has to be closed with dfs_sys_umount().

Parameters

[in]	poh	Pool connection handle.
[in]	coh	Container open handle.
[in]	mflags	Mount flags (O_RDONLY or O_RDWR). If 0, inherit flags of serialized DFS Sys handle.
[in]	sflags	Sys flags (DFS_SYS_NO_CACHE or DFS_SYS_NO_LOCK). This is not inherited from the DFS Sys handle.
[in]	glob	Global (shared) representation of a collective handle to be extracted.
[out]	dfs_sys	Returned dfs_sys mount.

◆ dfs_sys_global2local_all()

int dfs_sys_global2local_all	(	int	mflags,
		int	sflags,
		d_iov_t	glob,
		dfs_sys_t **	dfs_sys )

Create a dfs_sys mount from global representation data. This has to be closed with dfs_sys_disconnect().

Parameters

[in]	mflags	Mount flags (O_RDONLY or O_RDWR). If 0, inherit flags of serialized DFS Sys handle.
[in]	sflags	Sys flags (DFS_SYS_NO_CACHE or DFS_SYS_NO_LOCK). This is not inherited from the DFS Sys handle.
[in]	glob	Global (shared) representation of a collective handle to be extracted.
[out]	dfs_sys	Returned dfs_sys mount.

◆ dfs_sys_listxattr()

int dfs_sys_listxattr	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		char *	list,
		daos_size_t *	size,
		int	flags )

list extended attributes of a path and place them all in a buffer NULL terminated one after the other. By default, if path is a symlink, the link itself is interrogated.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in,out]	list	[in]: Allocated buffer for all xattr names. [out]: Names placed after each other (null terminated).
[in,out]	size	[in]: Size of list. [out]: Actual size of list.
[in]	flags	(O_NOFOLLOW)

Returns: 0 on success, errno code on failure. ERANGE If size is too small.

◆ dfs_sys_local2global()

int dfs_sys_local2global	(	dfs_sys_t *	dfs_sys,
		d_iov_t *	glob )

Convert a local dfs_sys mount to global representation data which can be shared with peer processes. If glob->iov_buf is set to NULL, the actual size of the global handle is returned through glob->iov_buf_len. This function does not involve any communication and does not block.

Parameters

[in]	dfs_sys	valid dfs_sys mount to be shared.
[out]	glob	pointer to iov of the buffer to store mount information.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_local2global_all()

int dfs_sys_local2global_all	(	dfs_sys_t *	dfs_sys,
		d_iov_t *	glob )

Convert a local dfs_sys mount including the pool and container handles to global representation data which can be shared with peer processes. If glob->iov_buf is set to NULL, the actual size of the global handle is returned through glob->iov_buf_len. This function does not involve any communication and does not block.

Parameters

[in]	dfs_sys	valid dfs_sys mount to be shared.
[out]	glob	pointer to iov of the buffer to store mount information.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_mkdir()

int dfs_sys_mkdir	(	dfs_sys_t *	dfs_sys,
		const char *	dir,
		mode_t	mode,
		daos_oclass_id_t	cid )

Create a directory.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	dir	Link path of new dir.
[in]	mode	mkdir mode.
[in]	cid	DAOS object class id (pass 0 for default MAX_RW).

Returns: 0 on success, errno code on failure.

◆ dfs_sys_mknod()

int dfs_sys_mknod	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		mode_t	mode,
		daos_oclass_id_t	cid,
		daos_size_t	chunk_size )

Create a file or directory.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of new object.
[in]	mode	mode_t (permissions + type).
[in]	cid	DAOS object class id (pass 0 for default MAX_RW). Valid on create only; ignored otherwise.
[in]	chunk_size	Chunk size of the array object to be created. (pass 0 for default 1 MiB chunk size). Valid on file create only; ignored otherwise.

Returns: 0 on success, errno code on failure. EEXIST If path already exists.

◆ dfs_sys_mount()

int dfs_sys_mount	(	daos_handle_t	poh,
		daos_handle_t	coh,
		int	mflags,
		int	sflags,
		dfs_sys_t **	dfs_sys )

Mount a file system with dfs_mount and optionally initialize a cache.

Parameters

[in]	poh	Pool connection handle.
[in]	coh	Container open handle.
[in]	mflags	Mount flags (O_RDONLY or O_RDWR).
[in]	sflags	Sys flags (DFS_SYS_NO_CACHE or DFS_SYS_NO_LOCK)
[out]	dfs_sys	Pointer to the file system object created.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_open()

int dfs_sys_open	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		mode_t	mode,
		int	flags,
		daos_oclass_id_t	cid,
		daos_size_t	chunk_size,
		const char *	value,
		dfs_obj_t **	obj )

Create/Open a directory, file, or Symlink. The object must be released with dfs_sys_close().

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of the object to create/open.
[in]	mode	mode_t (permissions + type).
[in]	flags	Access flags (handles: O_RDONLY, O_RDWR, O_EXCL, O_CREAT, O_TRUNC, O_NOFOLLOW).
[in]	cid	DAOS object class id (pass 0 for default MAX_RW). Valid on create only; ignored otherwise.
[in]	chunk_size	Chunk size of the array object to be created. (pass 0 for default 1 MiB chunk size). Valid on file create only; ignored otherwise.
[in]	value	Symlink value (NULL if not syml).
[out]	obj	Pointer to object opened.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_opendir()

int dfs_sys_opendir	(	dfs_sys_t *	dfs_sys,
		const char *	dir,
		int	flags,
		DIR **	dirp )

Open a directory. The directory must be closed with dfs_sys_closedir().

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	dir	Link path of dir.
[in]	flags	(O_NOFOLLOW)
[out]	dirp	Pointer to the open directory.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_punch()

int dfs_sys_punch	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		daos_off_t	offset,
		daos_off_t	len )

Punch a hole in the file starting at offset to len. If len is set to DFS_MAX_FSIZE, this will be a truncate operation to punch all bytes in the file above offset. If the file size is smaller than offset, the file is extended to offset and len is ignored.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of file.
[in]	offset	offset of file to punch at.
[in]	len	number of bytes to punch.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_read()

int dfs_sys_read	(	dfs_sys_t *	dfs_sys,
		dfs_obj_t *	obj,
		void *	buf,
		daos_off_t	off,
		daos_size_t *	size,
		daos_event_t *	ev )

Read data from the file object, and return actual data read.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	obj	Opened file object.
[in,out]	buf	[in]: Allocated buffer for data. [out]: Actual data read.
[in]	off	Offset into the file to read from.
[in,out]	size	[in]: Size of buffer passed in. [out]: Actual size of data read.
[in]	ev	Completion event, it is optional and can be NULL. Function will run in blocking mode if ev is NULL.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_readdir()

int dfs_sys_readdir	(	dfs_sys_t *	dfs_sys,
		DIR *	dirp,
		struct dirent **	dirent )

Return the next directory entry in a directory opened by dfs_sys_readdir(), or NULL if there are no more entries.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	dirp	Pointer to open directory.
[out]	dirent	Pointer to the next directory entry. This is NULL if there are no more directory entries.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_readlink()

int dfs_sys_readlink	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		char *	buf,
		daos_size_t *	size )

Retrieve Symlink value of path if it's a symlink. If the buffer size passed in is not large enough, we copy up to size of the buffer, and update the size to actual value size. The size returned includes the null terminator.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in,out]	buf	[in]: Allocated buffer for value. [out]: Symlink value.
[in,out]	size	[in]: Size of buffer passed in. [out]: Actual size of value.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_remove()

int dfs_sys_remove	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		bool	force,
		daos_obj_id_t *	oid )

Remove an object identified by path. If object is a directory and is non-empty; this will fail unless force option is true. If object is a symlink, the symlink is removed. See dfs_remove() for details.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	force	If true, remove dir even if non-empty.
[in]	oid	Optionally return the DAOS Object ID of the removed obj.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_remove_type()

int dfs_sys_remove_type	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		bool	force,
		mode_t	mode,
		daos_obj_id_t *	oid )

Similar to dfs_sys_remove but optionally enforces a type check on the entry.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	force	If true, remove dir even if non-empty.
[in]	mode	mode_t (S_IFREG \| S_IFDIR \| S_IFLNK). Pass 0 skip the type check.
[out]	oid	Optionally return the DAOS Object ID of the removed obj.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_removexattr()

int dfs_sys_removexattr	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		const char *	name,
		int	flags )

Remove extended attribute of a path. By default, if path is a symlink, the link itself is interogated.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	name	Name of xattr to remove.
[in]	flags	(O_NOFOLLOW)

Returns: 0 on success, errno code on failure.

◆ dfs_sys_setattr()

int dfs_sys_setattr	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		struct stat *	stbuf,
		int	flags,
		int	sflags )

set stat attributes for a file and fetch new values. By default, if the object is a symlink the link itself is modified. See dfs_sys_stat() for which entries are filled.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in,out]	stbuf	[in]: Stat struct with the members set. [out]: Stat struct with all valid members filled.
[in]	flags	Bitmask of flags to set.
[in]	sflags	(O_NOFOLLOW)

Returns: 0 on Success. errno code on Failure.

◆ dfs_sys_setxattr()

int dfs_sys_setxattr	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		const char *	name,
		const void *	value,
		daos_size_t	size,
		int	flags,
		int	sflags )

Set extended attribute on a path (file, dir, syml). By default, if path is a symlink, the value is set on the symlink itself.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	name	Name of xattr to add.
[in]	value	Value of xattr.
[in]	size	Size in bytes of the value.
[in]	flags	Set flags. passing 0 does not check for xattr existence. XATTR_CREATE: create or fail if xattr exists. XATTR_REPLACE: replace or fail if xattr does not exist.
[in]	sflags	(O_NOFOLLOW)

Returns: 0 on success, errno code on failure.

◆ dfs_sys_stat()

int dfs_sys_stat	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		int	flags,
		struct stat *	stbuf )

stat attributes of an entry. By default, if object is a symlink, the link itself is interrogated. The following elements of the stat struct are populated (the rest are set to 0): mode_t st_mode; uid_t st_uid; gid_t st_gid; off_t st_size; blkcnt_t st_blocks; struct timespec st_atim; struct timespec st_mtim; struct timespec st_ctim;

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	flags	Stat flags (O_NOFOLLOW).
[out]	stbuf	Stat struct with the members above filled.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_symlink()

int dfs_sys_symlink	(	dfs_sys_t *	dfs_sys,
		const char *	target,
		const char *	path )

Create a symlink.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	target	Symlink value.
[in]	path	Path to the new symlink.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_umount()

int dfs_sys_umount ( dfs_sys_t * dfs_sys )

Unmount a file system with dfs_mount.

Parameters

[in] dfs_sys Pointer to the mounted file system.

Returns: 0 on success, errno code on failure.

◆ dfs_sys_utimens()

int dfs_sys_utimens	(	dfs_sys_t *	dfs_sys,
		const char *	path,
		const struct timespec	times[2],
		int	flags )

Set atime and mtime of a path. atime as of 2.2 is ignored.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	path	Link path of object.
[in]	times	[0]: atime to set [1]: mtime to set
[in]	flags	(O_NOFOLLOW)

Returns: 0 on success, errno code on failure.

◆ dfs_sys_write()

int dfs_sys_write	(	dfs_sys_t *	dfs_sys,
		dfs_obj_t *	obj,
		const void *	buf,
		daos_off_t	off,
		daos_size_t *	size,
		daos_event_t *	ev )

Write data to the file object.

Parameters

[in]	dfs_sys	Pointer to the mounted file system.
[in]	obj	Opened file object.
[in]	buf	Data to write.
[in]	off	Offset into the file to write to.
[in,out]	size	[in]: Size of buffer passed in. [out]: Actual size of data written.
[in]	ev	Completion event, it is optional and can be NULL. Function will run in blocking mode if ev is NULL.

Returns: 0 on success, errno code on failure.

Macros

Typedefs

Functions

Detailed Description

Macro Definition Documentation

◆ DFS_SYS_NO_CACHE

◆ DFS_SYS_NO_LOCK

Typedef Documentation

◆ dfs_sys_t

Function Documentation

◆ dfs_sys2base()

◆ dfs_sys_access()

◆ dfs_sys_chmod()

◆ dfs_sys_chown()

◆ dfs_sys_close()

◆ dfs_sys_closedir()

◆ dfs_sys_connect()

◆ dfs_sys_disconnect()

◆ dfs_sys_getxattr()

◆ dfs_sys_global2local()

◆ dfs_sys_global2local_all()

◆ dfs_sys_listxattr()

◆ dfs_sys_local2global()

◆ dfs_sys_local2global_all()

◆ dfs_sys_mkdir()

◆ dfs_sys_mknod()

◆ dfs_sys_mount()

◆ dfs_sys_open()

◆ dfs_sys_opendir()

◆ dfs_sys_punch()

◆ dfs_sys_read()

◆ dfs_sys_readdir()

◆ dfs_sys_readlink()

◆ dfs_sys_remove()

◆ dfs_sys_remove_type()

◆ dfs_sys_removexattr()

◆ dfs_sys_setattr()

◆ dfs_sys_setxattr()

◆ dfs_sys_stat()

◆ dfs_sys_symlink()

◆ dfs_sys_umount()

◆ dfs_sys_utimens()

◆ dfs_sys_write()