util-vserver-0.30.208

[util-vserver.git] / lib / syscall_setiattr-fscompat.hc

diff --git a/lib/syscall_setiattr-fscompat.hc b/lib/syscall_setiattr-fscompat.hc
new file mode 100644 (file)
index 0000000..422ec80
--- /dev/null
+++ b/lib/syscall_setiattr-fscompat.hc
@@ -0,0 +1,91 @@
+// $Id: syscall_setiattr-fscompat.hc,v 1.3 2005/07/15 18:06:27 ensc Exp $    --*- c -*--
+
+// Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+//  
+// 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; version 2 of the License.
+//  
+// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include "ioctl-setext2flags.hc"
+#include "ioctl-setfilecontext.hc"
+#include "ioctl-setxflg.hc"
+#include "ioctl-getxflg.hc"
+
+#include <fcntl.h>
+
+static inline ALWAYSINLINE int
+vc_set_iattr_fscompat(char const *filename,
+                     xid_t xid,
+                     uint32_t flags, uint32_t mask)
+{
+  int                  fd;
+  struct stat          st;
+  int                  stat_rc;
+
+  fd = open(filename, O_RDONLY|O_NONBLOCK);
+  if (fd==-1) return -1;
+    
+  stat_rc = fstat(fd, &st);
+  if (stat_rc==-1) goto err;
+
+  if ( (mask&VC_IATTR_IUNLINK) ) {
+    unsigned int const tmp = VC_IMMUTABLE_FILE_FL|VC_IMMUTABLE_LINK_FL;
+    if (vc_X_set_ext2flags(fd,
+                          (flags&VC_IATTR_IUNLINK) ? tmp : 0,
+                          (flags&VC_IATTR_IUNLINK) ? 0   : tmp)==-1)
+      goto err;
+  }
+
+  if ( (mask&VC_IATTR_BARRIER) ) {
+    if ((flags&VC_IATTR_BARRIER)) {
+      if (vc_X_set_ext2flags(fd, VC_IMMUTABLE_LINK_FL, 0)==-1 ||
+         fchmod(fd, 0))
+       goto err;
+    }
+    else {
+      if (vc_X_set_ext2flags(fd, 0, VC_IMMUTABLE_LINK_FL)==-1 ||
+         fchmod(fd, 0500))
+       goto err;
+    }      
+  }
+
+  if ( (mask&VC_IATTR_XID) &&
+       vc_X_set_filecontext(fd, xid)==-1)
+    goto err;
+
+  if ( (mask&(VC_IATTR_HIDE|VC_IATTR_WATCH)) ) {
+    long               tmp;
+    if (vc_X_get_xflg(fd, &tmp)==-1) goto err;
+
+    tmp &= ~( ((mask&VC_IATTR_HIDE)   ? 1 : 0) |
+             ((mask&VC_IATTR_WATCH) ? 2 : 0) );
+    tmp |= ( ((flags&VC_IATTR_HIDE)  ? 1 : 0) |
+            ((flags&VC_IATTR_WATCH) ? 2 : 0) );
+
+    if (vc_X_set_xflg(fd, tmp)==-1) goto err;
+  }
+
+  close(fd);
+  return 0;
+  err:
+  {
+    int        old_errno = errno;
+    close(fd);
+    errno = old_errno;
+    return -1;
+  }
+}