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POSIX.1 specifies that a failed link() to a directory must return EPERM,

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and EMLINK was not documented; from Klaus Klein in PR standards/3397.
Also documented EOPNOTSUPP for filesystems that don't support hard links.
This commit is contained in:
mikel 1997-03-27 07:30:25 +00:00
parent b9a022ebe6
commit b81091e992
2 changed files with 20 additions and 8 deletions
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24
lib/libc/sys/link.2
View File

@ -1,4 +1,4 @@
.\" $NetBSD: link.2,v 1.7 1995/02/27 12:34:01 cgd Exp $
.\" $NetBSD: link.2,v 1.8 1997/03/27 07:30:26 mikel Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@ -50,7 +50,7 @@ function call
atomically creates the specified directory entry (hard link)
.Fa name2
with the attributes of the underlying object pointed at by
.Fa name1
.Fa name1 .
If the link is successful: the link count of the underlying object
is incremented;
.Fa name1
@ -76,9 +76,9 @@ both
and
.Fa name2
must be in the same file system.
Unless the caller is the super-user,
.Fa name1
may not be a directory.
.Fa Name1
may not be a directory unless the caller is the super-user
and the file system containing it supports linking to directories.
.Sh RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise,
a value of -1 is returned and
@ -109,6 +109,15 @@ Too many symbolic links were encountered in translating one of the pathnames.
The file named by
.Fa name1
does not exist.
.It Bq Er EOPNOTSUPP
The file system containing the file named by
.Fa name1
does not support links.
.It Bq Er EMLINK
The link count of the file named by
.Fa name1
would exceed
.Dv {LINK_MAX}.
.It Bq Er EEXIST
The link named by
.Fa name2
@ -117,7 +126,10 @@ does exist.
The file named by
.Fa name1
is a directory and the effective
user ID is not super-user.
user ID is not super-user,
or the file system containing the file does not permit the use of
.Fn link
on a directory.
.It Bq Er EXDEV
The link named by
.Fa name2

4
sys/ufs/ufs/ufs_vnops.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ufs_vnops.c,v 1.22 1997/01/30 09:52:27 tls Exp $ */
/* $NetBSD: ufs_vnops.c,v 1.23 1997/03/27 07:30:25 mikel Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1993
@ -627,7 +627,7 @@ ufs_link(v)
#endif
if (vp->v_type == VDIR) {
VOP_ABORTOP(dvp, cnp);
error = EISDIR;
error = EPERM;
goto out2;
}
if (dvp->v_mount != vp->v_mount) {