See Also

Syscall.readlink

Syscall.symlink

Syscall.unlink

Parameters

oldpath

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newpath

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Returns

On success, zero is returned. On error, -1 is returned and Stdlib.GetLastError returns the translated error.

Usage

The link() system call will fail and no link will be created if:

Error	Details
Errno.ENOTDIR	A component of either path prefix is not a directory.
Errno.ENAMETOOLONG	A component of either pathname exceeded 255 characters, or entire length of either path name exceeded 1023 characters.
Errno.ENOENT	A component of either path prefix does not exist.
Errno.EOPNOTSUPP	The file system containing the file named by name1 does not support links.
Errno.EMLINK	The link count of the file named by name1 would exceed 32767.
Errno.EACCES	A component of either path prefix denies search permission.
Errno.EACCES	The requested link requires writing in a directory with a mode that denies write permission.
Errno.ELOOP	Too many symbolic links were encountered in translating one of the pathnames.
Errno.ENOENT	The file named by name1 does not exist.
Errno.EEXIST	The link named by name2 does exist.
Errno.EPERM	The file named by name1 is a directory or is flagged immutable or append-only (see Syscall.chflags(2) ) .
Errno.EXDEV	The link named by name2 and the file named by name1 are on different file systems.
Errno.ENOSPC	The directory in which the entry for the new link is being placed cannot be extended because there is no space left on the file system containing the directory.
Errno.EDQUOT	The directory in which the entry for the new link is being placed cannot be extended because the user's quota of disk blocks on the file system containing the directory has been exhausted.
Errno.EIO	An I/O error occurred while reading from or writing to the file system to make the directory entry.
Errno.EROFS	The requested link requires writing in a directory on a read-only file system.
Errno.EFAULT	One of the pathnames specified is outside the process's allocated address space.

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Remarks

The link() system call atomically creates the specified directory entry (hard link) name2 with the attributes of the underlying object pointed at by name1 . If the link is successful: the link count of the underlying object is incremented; name1 and name2 share equal access and rights to the underlying object.

If name1 is removed, the file name2 is not deleted and the link count of the underlying object is decremented.

The object pointed at by the name1 argument must exist for the hard link to succeed and both name1 and name2 must be in the same file system. The name1 argument may not be a directory.

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Requirements

Namespace: Mono.Unix.Native
Assembly: Mono.Posix (in Mono.Posix.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0