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61 .\" @(#)undelete.2 8.4 (Berkeley) 10/18/94
74 .Fn undelete "const char *path"
78 works only when the named object
79 is a whiteout in a union filesystem.
80 The system call removes the whiteout causing
81 any objects in a lower layer of the
82 union stack to become visible once more.
84 Upon successful completion, a value of 0 is returned.
85 Otherwise, a value of \-1 is returned and
87 is set to indicate the error.
92 .Bl -tag -width ENAMETOOLONGAA
94 Search permission is denied for a component of the path prefix, or
95 write permission is denied on the directory containing the name
98 The path does not reference a whiteout.
101 points outside the process's allocated address space.
103 The pathname contains a character with the high-order bit set.
105 An I/O error occurred while updating the directory entry.
107 Too many symbolic links were encountered in translating the pathname.
108 .It Bq Er ENAMETOOLONG
109 A component of a pathname exceeded
112 or an entire path name exceeded
116 The named whiteout does not exist.
118 A component of the path prefix is not a directory.
120 The directory containing the name is marked sticky,
121 and the containing directory is not owned by the effective user ID.
123 The name resides on a read-only file system.
131 function call first appeared in