util-vserver-0.30.208

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

diff --git a/lib/syscall_getiattr-fscompat.hc b/lib/syscall_getiattr-fscompat.hc
new file mode 100644 (file)
index 0000000..a0c5bc5
--- /dev/null
+++ b/lib/syscall_getiattr-fscompat.hc
@@ -0,0 +1,95 @@
+// $Id: syscall_getiattr-fscompat.hc,v 1.2 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-getext2flags.hc"
+#include "ioctl-getfilecontext.hc"
+#include "ioctl-getxflg.hc"
+
+#include <fcntl.h>
+static inline ALWAYSINLINE int
+vc_get_iattr_fscompat(char const *filename,
+                     xid_t    * /*@null@*/ xid,
+                     uint32_t * /*@null@*/ flags,
+                     uint32_t * mask)
+{
+  struct stat          st;
+  int                  stat_rc;
+  int                  fd;
+  int                  old_mask = *mask;
+
+  *mask = 0;
+
+  if (lstat(filename, &st)==-1) return -1;
+  if (!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode)) return 0;
+
+  fd = open(filename, O_RDONLY|O_NONBLOCK);
+  if (fd==-1) return -1;
+
+  stat_rc = fstat(fd, &st);
+  if (stat_rc==-1) goto err;
+
+  if ( old_mask&VC_IATTR_XID ) {
+    *xid = vc_X_get_filecontext(fd);
+    if (*xid!=VC_NOCTX) *mask |= VC_IATTR_XID;
+  }
+
+  if ( old_mask&VC_IATTR_IUNLINK ) {
+    long               tmp;
+    int                rc = vc_X_get_ext2flags(fd, &tmp);
+
+    if (rc!=-1) {
+      *mask |= VC_IATTR_IUNLINK;
+      if (tmp & (VC_IMMUTABLE_FILE_FL|VC_IMMUTABLE_LINK_FL))
+       *flags |= VC_IATTR_IUNLINK;
+    }
+  }
+
+  if ( (old_mask&VC_IATTR_BARRIER) && S_ISDIR(st.st_mode)) {
+    long               ext2_flags;
+    
+    *mask  |= VC_IATTR_BARRIER;
+    if ((st.st_mode&0777)==0 &&
+       vc_X_get_ext2flags(fd, &ext2_flags)!=-1 &&
+       (ext2_flags & VC_IMMUTABLE_LINK_FL))
+      *flags |= VC_IATTR_BARRIER;
+  }
+
+  if ( (old_mask&(VC_IATTR_WATCH|VC_IATTR_HIDE)) ){
+    long               tmp;
+    int                rc = vc_X_get_xflg(fd, &tmp);
+    if (rc!=-1) {
+      *mask |= (VC_IATTR_WATCH|VC_IATTR_HIDE);
+      if (tmp&1) *flags |= VC_IATTR_HIDE;
+      if (tmp&2) *flags |= VC_IATTR_WATCH;
+    }
+  }
+
+  close(fd);
+  return 0;
+  err:
+  {
+    int        old_errno = errno;
+    close(fd);
+    errno = old_errno;
+    return -1;
+  } 
+}