|Linux & Unix Commands - Search Man Pages
UNDELETE(2) BSD System Calls Manual UNDELETE(2)
undelete -- remove whiteout
Standard C Library (libc, -lc)
undelete(const char *path);
Currently undelete works only when the named object is a whiteout in a union filesystem.
The system call removes the whiteout causing any objects in a lower layer of the union stack
to become visible once more.
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned
and errno is set to indicate the error.
The undelete() succeeds unless:
[EACCES] Search permission is denied for a component of the path prefix, or write
permission is denied on the directory containing the name to be undeleted.
[EEXIST] The path does not reference a whiteout.
[EFAULT] path points outside the process's allocated address space.
[EINVAL] The pathname contains a character with the high-order bit set.
[EIO] An I/O error occurred while updating the directory entry.
[ELOOP] Too many symbolic links were encountered in translating the pathname.
[ENAMETOOLONG] A component of a pathname exceeded 255 characters, or an entire path name
exceeded 1023 characters.
[ENOENT] The named whiteout does not exist.
[ENOTDIR] A component of the path prefix is not a directory.
[EPERM] The directory containing the name is marked sticky, and the containing
directory is not owned by the effective user ID.
[EROFS] The name resides on a read-only file system.
An undelete function call first appeared in 4.4BSD -Lite.
BSD November 28, 2008 BSD
All times are GMT -4. The time now is 06:59 PM.