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authorRoland McGrath <roland@gnu.org>1999-07-18 02:09:24 +0000
committerRoland McGrath <roland@gnu.org>1999-07-18 02:09:24 +0000
commit81dc783d52f22998780da22585e88b2f51c88e85 (patch)
treec937e02ca33f1d60e202a0fbadba0ed97c0bd1db /libdiskfs/dir-link.c
parentee6ee92148cc5624077ed711f642c5e95e0285a6 (diff)
1999-07-17 Roland McGrath <roland@baalperazim.frob.com>
* dir-link.c (diskfs_S_dir_link): Fix error checks on ports. If DIRCRED (receiver port) is bad, return EOPNOTSUPP. If FILECRED (argument port) is bad, return EXDEV (after EROFS check).
Diffstat (limited to 'libdiskfs/dir-link.c')
-rw-r--r--libdiskfs/dir-link.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/libdiskfs/dir-link.c b/libdiskfs/dir-link.c
index 7f1ab2f5..7cc88633 100644
--- a/libdiskfs/dir-link.c
+++ b/libdiskfs/dir-link.c
@@ -1,5 +1,5 @@
/* libdiskfs implementation of fs.defs: dir_link
- Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997 Free Software Foundation
+ Copyright (C) 1992,93,94,95,96,97,99 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
@@ -31,16 +31,16 @@ diskfs_S_dir_link (struct protid *dircred,
struct dirstat *ds = alloca (diskfs_dirstat_size);
error_t error;
- if (!filecred)
+ if (!dircred)
return EOPNOTSUPP;
-
- np = filecred->po->np;
+
if (diskfs_check_readonly ())
return EROFS;
-
- if (!dircred)
+
+ if (!filecred)
return EXDEV;
-
+
+ np = filecred->po->np;
mutex_lock (&np->lock);
if (S_ISDIR (np->dn_stat.st_mode))
{
@@ -48,7 +48,7 @@ diskfs_S_dir_link (struct protid *dircred,
return EISDIR;
}
mutex_unlock (&np->lock);
-
+
dnp = dircred->po->np;
mutex_lock (&dnp->lock);
@@ -76,7 +76,7 @@ diskfs_S_dir_link (struct protid *dircred,
mach_port_deallocate (mach_task_self (), filecred->pi.port_right);
return 0;
}
-
+
if (tnp && S_ISDIR (tnp->dn_stat.st_mode))
{
diskfs_drop_dirstat (dnp, ds);
@@ -84,13 +84,13 @@ diskfs_S_dir_link (struct protid *dircred,
mutex_unlock (&tnp->lock);
return EISDIR;
}
-
+
/* Create new entry for NP */
/* This is safe because NP is not a directory (thus not DNP) and
not TNP and is a leaf. */
mutex_lock (&np->lock);
-
+
/* Increment link count */
if (np->dn_stat.st_nlink == diskfs_link_max - 1)
{
@@ -102,7 +102,7 @@ diskfs_S_dir_link (struct protid *dircred,
np->dn_stat.st_nlink++;
np->dn_set_ctime = 1;
diskfs_node_update (np, 1);
-
+
/* Attach it */
if (tnp)
{
@@ -120,10 +120,10 @@ diskfs_S_dir_link (struct protid *dircred,
}
else
error = diskfs_direnter (dnp, name, np, ds, dircred);
-
+
if (diskfs_synchronous)
diskfs_node_update (dnp, 1);
-
+
mutex_unlock (&dnp->lock);
mutex_unlock (&np->lock);
if (!error)