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LINK(2)			   Linux Programmer's Manual		       LINK(2)

NAME
       link - make a new name for a file

SYNOPSIS
       #include	<unistd.h>

       int link(const char *oldpath, const char	*newpath);

DESCRIPTION
       link  creates  a	 new  link  (also known	as a hard link)	to an existing
       file.

       If newpath exists it will not be	overwritten.

       This new	name may be used exactly as the	old  one  for  any  operation;
       both names refer	to the same file (and so have the same permissions and
       ownership) and it is impossible to tell which name was the `original'.

RETURN VALUE
       On success, zero	is returned.  On error,	-1 is returned,	and  errno  is
       set appropriately.

ERRORS
       EXDEV  oldpath and newpath are not on the same filesystem.

       EPERM  The  filesystem  containing oldpath and newpath does not support
	      the creation of hard links.

       EFAULT oldpath or newpath points	outside	your accessible	address	space.

       EACCES Write access to the directory containing newpath is not  allowed
	      for  the	process's  effective uid, or one of the	directories in
	      oldpath or newpath did not allow search (execute)	permission.

       ENAMETOOLONG
	      oldpath or newpath was too long.

       ENOENT A	directory component in oldpath or newpath does not exist or is
	      a	dangling symbolic link.

       ENOTDIR
	      A	component used as a directory in oldpath or newpath is not, in
	      fact, a directory.

       ENOMEM Insufficient kernel memory was available.

       EROFS  The file is on a read-only filesystem.

       EEXIST newpath already exists.

       EMLINK The file referred	to by oldpath already has the  maximum	number
	      of links to it.

       ELOOP  Too many symbolic	links were encountered in resolving oldpath or
	      newpath.

       ENOSPC The device containing the	file has no room for the new directory
	      entry.

       EPERM  oldpath is a directory.

       EIO    An I/O error occurred.

NOTES
       Hard links, as created by link, cannot span filesystems.	Use symlink if
       this is required.

CONFORMING TO
       SVr4, SVID, POSIX, BSD 4.3, X/OPEN.  SVr4 documents additional  ENOLINK
       and  EMULTIHOP  error  conditions;  POSIX.1  does  not  document	ELOOP.
       X/OPEN does not document	EFAULT,	ENOMEM or EIO.

BUGS
       On NFS file systems, the	return code may	 be  wrong  in	case  the  NFS
       server  performs	 the link creation and dies before it can say so.  Use
       stat(2) to find out if the link got created.

SEE ALSO
       symlink(2), unlink(2), rename(2), open(2), stat(2), ln(1)

Linux 2.0.30			  1997-12-10			       LINK(2)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | NOTES | CONFORMING TO | BUGS | SEE ALSO

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