XrdOssAt Class Reference

#include <XrdOssAt.hh>

Collaboration diagram for XrdOssAt:

Public Member Functions
int	Opendir (XrdOssDF &atDir, const char *path, XrdOucEnv &env, XrdOssDF *&ossDF)
int	OpenRO (XrdOssDF &atDir, const char *path, XrdOucEnv &env, XrdOssDF *&ossDF)
int	Remdir (XrdOssDF &atDir, const char *path)
int	Stat (XrdOssDF &atDir, const char *path, struct stat &buf, int opts=0)
int	Unlink (XrdOssDF &atDir, const char *path)
	XrdOssAt (XrdOss &ossfs)
	~XrdOssAt ()
	Destructor.

Static Public Attributes
static const int	At_dInfo = 0x00000001

Private Attributes
XrdOss &	ossFS

Detailed Description

This class defines the object that handles extended operations that are relative to an open directory. Create a single instance of this class by passing it the pointer to the asociated file system (XrdOss) and use the methods herein to effect various operations relative to an XrdOss directory.

Note

1) The following relative methods are not currently implemented: access() (aka faccessat), chmod() (aka fchmodat), chown() (aka fchownat), mkdir() (aka mkdirat), readlink() (aka readlinkat), rename (a.k.a renameat), symlink() (aka symlinkat), and utimes() (a.k.a utimesat). 2) The path argument must be relative and is not subject to name2name() processing. This is in contrast to standard Unix "at" calls. 3) Only the online copy of the target is subject to these calls. Use the the standard calls for remote storage backed file systems.

Constructor & Destructor Documentation

XrdOssAt()

XrdOssAt::XrdOssAt ( XrdOss &  ossfs )

inline

Constructor

Parameters

ossfs

- Reference to the OSS system interface.

~XrdOssAt()

XrdOssAt::~XrdOssAt ( )

inline

Destructor.

Member Function Documentation

Opendir()

int XrdOssAt::Opendir	(	XrdOssDF &	atDir,
		const char *	path,
		XrdOucEnv &	env,
		XrdOssDF *&	ossDF
	)

Open a directory relative to an open directory.

Parameters

atDir	- Reference to the directory object to use.
path	- Pointer to the relative path of the directory to be opened.
env	- Reference to environmental information.
ossDF	- Reference to where the directory object pointer is to be returned upon success.

Returns

0 upon success or -errno or -osserr (see XrdOssError.hh).

OpenRO()

int XrdOssAt::OpenRO	(	XrdOssDF &	atDir,
		const char *	path,
		XrdOucEnv &	env,
		XrdOssDF *&	ossDF
	)

Open a file in r/o mode relative to an open directory.

Parameters

atDir	- Reference to the directory object to use.
path	- Pointer to the relative path of the file to be opened.
env	- Reference to environmental information.
ossDF	- Reference to where the file object pointer is to be returned upon success.

Returns

0 upon success or -errno or -osserr (see XrdOssError.hh).

Remdir()

int XrdOssAt::Remdir	(	XrdOssDF &	atDir,
		const char *	path
	)

Remove a directory relative to an open directory. Only the online entry is removed (use standard remdir() for tape backed systems).

Parameters

atDir	- Reference to the directory object to use.
path	- Pointer to the path of the directory to be removed.

Returns

0 upon success or -errno or -osserr (see XrdOssError.hh).

Stat()

int XrdOssAt::Stat	(	XrdOssDF &	atDir,
		const char *	path,
		struct stat &	buf,
		int	opts = 0
	)

Unlink()

int XrdOssAt::Unlink	(	XrdOssDF &	atDir,
		const char *	path
	)

Remove a file relative to an open directory. Only the online copy is is removed (use standard unlink() for tape backed systems).

Parameters

atDir	- Reference to the directory object to use.
path	- Pointer to the path of the file to be removed.

Returns

0 upon success or -errno or -osserr (see XrdOssError.hh).

Member Data Documentation

At_dInfo

const int XrdOssAt::At_dInfo = 0x00000001

static

Return state information on the target relative to an open directory.

Parameters

atDir	- Reference to the directory object to use.
path	- Pointer to the path of the target to be interrogated.
buf	- Reference to the structure where info it to be returned.
opts	- Options: At_dInfo - provide bdevID in st_rdev and partID in st_dev

Returns

0 upon success or -errno or -osserr (see XrdOssError.hh).

ossFS

XrdOss& XrdOssAt::ossFS

private

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The documentation for this class was generated from the following file:

• XrdOssAt.hh