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32 .Nd make a hard file link
38 .Fn fhlink "fhandle_t *fhp" "const char *to"
40 .Fn fhlinkat "fhandle_t *fhp" "int tofd" "const char *to"
46 atomically creates the specified directory entry (hard link)
48 with the attributes of the underlying object pointed at by
50 If the link is successful: the link count of the underlying object
55 share equal access and rights
63 is not deleted and the link count of the
67 The object pointed at by the
70 must exist for the hard link to
76 must be in the same file system.
80 may not be a directory.
84 system call is equivalent to
86 except in the case where
89 In this case a relative path
91 is interpreted relative to
92 the directory associated with the file descriptor
94 instead of the current working directory.
98 is passed the special value
102 parameter, the current working directory is used for the
109 the behavior is identical to a call to
114 .Dv AT_SYMLINK_FOLLOW
117 names a symbolic link, a new link is created for the symbolic link
126 will fail and no link will be created if:
131 prefix is not a directory.
132 .It Bq Er ENAMETOOLONG
135 exceeded 255 characters,
138 name exceeded 1023 characters.
142 prefix does not exist.
144 The file system containing the file pointed at by
146 does not support links.
148 The link count of the file pointed at by
154 prefix denies search permission.
156 The requested link requires writing in a directory with a mode
157 that denies write permission.
159 Too many symbolic links were encountered in translating one of the pathnames.
161 The file pointed at by
169 The file pointed at by
173 The file pointed at by
175 has its immutable or append-only flag set, see the
177 manual page for more information.
179 The parent directory of the file named by
181 has its immutable flag set.
185 and the file pointed at by
187 are on different file systems.
189 The directory in which the entry for the new link is being placed
190 cannot be extended because there is no space left on the file
191 system containing the directory.
193 The directory in which the entry for the new link
194 is being placed cannot be extended because the
195 user's quota of disk blocks on the file system
196 containing the directory has been exhausted.
198 An I/O error occurred while reading from or writing to
199 the file system to make the directory entry.
201 Corrupted data was detected while reading from the file system.
203 The requested link requires writing in a directory on a read-only file
206 One of the pathnames specified
207 is outside the process's allocated address space.
214 In addition to the errors returned by the
218 system call may fail if:
225 argument does not specify an absolute path and the
229 nor a valid file descriptor open for searching.
233 argument is not valid.
239 argument is not an absolute path and
243 nor a file descriptor associated with a directory.
254 system calls first appeared in