Initial revision

1 files changed, 98 insertions, 0 deletions

diff --git a/libdiskfs/node-create.c b/libdiskfs/node-create.c
new file mode 100644
index 00000000..8a76e3d8
--- /dev/null
+++ b/libdiskfs/node-create.c
@@ -0,0 +1,98 @@
+/* Making new files
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Create a new node and link it into DIR with as NAME.  Give it MODE;
+   if that includes IFDIR, also initialize `.' and `..' in the new
+   directory.  Return the node in NPP.  CRED identifies the user responsible
+   for the call, and DS is the result of a prior diskfs_lookup for creation. */
+error_t
+diskfs_create_and_link (struct node *dir,
+			char *name,
+			mode_t mode,
+			struct node **newnode,
+			struct protid *cred,
+			struct dirstat *ds)
+{
+  struct node *np;
+  error_t err;
+  int dirinc = 0;
+  int number;
+  
+  /* Make the node */
+  err = diskfs_alloc_node (dir, mode, &number);
+  if (err)
+    {
+      diskfs_drop_dirstat (ds);
+      return err;
+    }
+  *newnode = np = diskfs_nget (newnode);
+  
+  /* Initialize the on-disk fields. */
+  
+  if (cred->nuids)
+    np->dn_stat.st_uid = cred->uids[0];
+  else
+    {
+      np->dn_stat.st_uid = dir->dn_stat.st_uid;
+      mode &= ~S_ISUID;
+    }
+
+  if (groupmember (dir->dn_stat.st_gid, cred))
+    np->dn_stat.st_gid = dir->dn_stat.st_gid;
+  else if (cred->ngids)
+    np->dn_stat.st_gid = cred->gids[0];
+  else
+    {
+      np->dn_stat.st_gid = dir->dn_stat.st_gid;
+      mode &= ~S_ISGID;
+    }
+  
+  np->dn_stat.st_rdev = 0;
+  np->dn_stat.st_nlink = 1;
+  np->dn_stat.st_mode = mode;
+
+  np->dn_stat.st_blocks = 0;
+  np->dn_stat.st_size = 0;
+  np->dn_stat.st_flags = 0;
+  np->dn_set_atime = 1;
+  np->dn_set_mtime = 1;
+  np->dn_set_ctime = 1;
+
+  if (S_ISDIR (mode))
+    err = diskfs_init_dir (np, dir);
+  
+  diskfs_node_update (np, 1);
+
+  if (err)
+    {
+      diskfs_drop_dirstat (ds);
+      return err;
+    }
+  
+  err = diskfs_direnter (dir, name, np, ds, cred);
+  if (err)
+    {
+      if (S_ISDIR (mode))
+	diskfs_clear_directory (np);
+      np->dn_stat.st_nlink = 0;
+      np->dn_set_ctime = 1;
+      diskfs_nput (np);
+    }
+  return err;
+}