undelete(2) [debian man page]

UNDELETE(2)						      BSD System Calls Manual						       UNDELETE(2)

NAME

     undelete -- attempt to recover a deleted file

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <unistd.h>

     int
     undelete(const char *path);

DESCRIPTION

     The undelete() system call attempts to recover the deleted file named by path.  Currently, this works only when the named object is a white-
     out in a union file system.  The system call removes the whiteout causing any objects in a lower layer of the union stack to become visible
     once more.

     Eventually, the undelete() functionality may be expanded to other file systems able to recover deleted files such as the log-structured file
     system.

RETURN VALUES

     The undelete() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indi-
     cate the error.

ERRORS

     The undelete() succeeds unless:

     [ENOTDIR]		A component of the path prefix is not a directory.

     [ENAMETOOLONG]	A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters.

     [EEXIST]		The path does not reference a whiteout.

     [ENOENT]		The named whiteout does not exist.

     [EACCES]		Search permission is denied for a component of the path prefix.

     [EACCES]		Write permission is denied on the directory containing the name to be undeleted.

     [ELOOP]		Too many symbolic links were encountered in translating the pathname.

     [EPERM]		The directory containing the name is marked sticky, and the containing directory is not owned by the effective user ID.

     [EINVAL]		The last component of the path is '..'.

     [EIO]		An I/O error occurred while updating the directory entry.

     [EROFS]		The name resides on a read-only file system.

     [EFAULT]		The path argument points outside the process's allocated address space.

SEE ALSO

     unlink(2), mount_unionfs(8)

HISTORY

     The undelete() system call first appeared in 4.4BSD-Lite.

BSD
								 January 22, 2006							       BSD

Check Out this Related Man Page

RMDIR(2)						      BSD System Calls Manual							  RMDIR(2)

NAME

     rmdir -- remove a directory file

SYNOPSIS

     #include <unistd.h>

     int
     rmdir(const char *path);

DESCRIPTION

     Rmdir() removes a directory file whose name is given by path.  The directory must not have any entries other than '.' and '..'.

RETURN VALUES

     A 0 is returned if the remove succeeds; otherwise a -1 is returned and an error code is stored in the global location errno.

ERRORS

     The named file is removed unless:

     [ENOTDIR]		A component of the path is not a directory.

     [ENAMETOOLONG]	A component of a pathname exceeded {NAME_MAX} characters, or an entire path name exceeded {PATH_MAX} characters.

     [ENOENT]		The named directory does not exist.

     [ELOOP]		Too many symbolic links were encountered in translating the pathname.

     [ENOTEMPTY]	The named directory contains files other than '.' and '..' in it.

     [EACCES]		Search permission is denied for a component of the path prefix.

     [EACCES]		Write permission is denied on the directory containing the link to be removed.

     [EPERM]		The directory containing the directory to be removed is marked sticky, and neither the containing directory nor the direc-
			tory to be removed are owned by the effective user ID.

     [EBUSY]		The directory to be removed is the mount point for a mounted file system.

     [EIO]		An I/O error occurred while deleting the directory entry or deallocating the inode.

     [EROFS]		The directory entry to be removed resides on a read-only file system.

     [EFAULT]		Path points outside the process's allocated address space.

SEE ALSO

     mkdir(2), unlink(2)

HISTORY

     The rmdir() function call appeared in 4.2BSD.

4.2 Berkeley Distribution					   June 4, 1993 					 4.2 Berkeley Distribution

Linux and UNIX Man Pages

undelete(2) [debian man page]

Check Out this Related Man Page