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--- source3/modules/vfs_samfs.c 2010-07-07 10:22:33.756895700 -0700
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+++ source3/modules/vfs_samfs.c 2010-07-07 07:13:55.603441200 -0700
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@@ -0,0 +1,172 @@
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+/*
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+ * Support for offline files with Sun SAM-QFS
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+ *
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+ * Copyright (C) Dirk Nitschke, 2009
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+ *
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+ * Modified by Jiri Sasek, 2010
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+ * To conform the samba-vfs api
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 3 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
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+ *
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+ */
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+
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+#include "includes.h"
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+/*
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+ * Include files for Sun SAM-QFS
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+ *
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+ */
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+#include "sam-stat.h"
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+#include "sam-lib.h"
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+
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+#undef DBGC_CLASS
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+#define DBGC_CLASS DBGC_VFS
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+
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+#define SAMFS_MODULE_NAME "samfs"
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+
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+NTSTATUS vfs_samfs_init(void);
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+
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+/*
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+ * samfs_is_offline()
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+ * check if the local file is offline in the sense of SAM-QFS
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+ *
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+ * A segmented file is offline if the file's index inode is
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+ * offline or at least one of it's segments is offline.
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+ *
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+ * See sam_stat(3) and sam_segment_stat(3) for details.
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+ *
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+ * If something goes wrong we assume that the file is offline.
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+ */
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+static bool samfs_is_offline(struct vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT *sbuf)
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+{
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+ struct sam_stat file_info;
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+ struct sam_stat *seg_info_ptr;
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+ bool offline;
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+ int number_of_segments;
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+ int result;
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+ int i;
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+
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+ offline = false;
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+ if (ISDOT(path) || ISDOTDOT(path)) {
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+ return false;
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+ }
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+
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+ /*
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+ * Initialize file_info to be all zero bits
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+ */
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+ memset((void *)&file_info, 0, sizeof(struct sam_stat));
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+
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+ /*
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+ * Stat the file using the regular sam_stat function
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+ */
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+ result = sam_stat(path, &file_info, sizeof(struct sam_stat));
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+
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+ if (result != 0) {
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+ DEBUG(10,("samfs_is_offline: cannot sam_stat %s, %s\nAssuming file is offline.\n", \
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+ path, strerror(errno)));
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+ return true;
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+ }
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+
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+ /*
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+ * Check if file is offline
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+ */
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+ if (SS_ISOFFLINE(file_info.attr)) {
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+ DEBUG(10,("samfs_is_offline: file %s is offline.\n", path));
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+ return true;
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+ }
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+
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+ /*
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+ * Check for segmented file
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+ */
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+ if (SS_ISSEGMENT_F(file_info.attr)) {
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+ number_of_segments = NUM_SEGS(&file_info);
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+ seg_info_ptr = (struct sam_stat *)malloc(number_of_segments *
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+ sizeof(struct sam_stat));
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+ if (seg_info_ptr != NULL) {
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+ /*
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+ * Initialize seg_info_ptr to be all zero bits
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+ */
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+ memset((void *)seg_info_ptr, 0, number_of_segments *
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+ sizeof(struct sam_stat));
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+ /*
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+ * Stat all segments
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+ */
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+ result = sam_segment_stat(path, seg_info_ptr,
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+ number_of_segments * sizeof(struct sam_stat));
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+ if (result != 0) {
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+ DEBUG(10,("samfs_is_offline: cannot sam_segment_stat %s, %s\nAssuming file is offline.\n", \
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+ path, strerror(errno)));
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+ offline = true;
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+ }
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+ /*
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+ * Loop over segments until we have checked all segments
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+ * or found one which is offline.
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+ */
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+ i = 0;
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+ while (!offline && (i < number_of_segments)) {
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+ if (SS_ISOFFLINE(seg_info_ptr[i].attr)) {
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+ DEBUG(10,("samfs_is_offline: file %s has offline segment %d\n", \
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+ path, i+1));
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+ offline = true;
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+ }
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+ i++;
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+ }
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+ SAFE_FREE(seg_info_ptr);
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+ } else {
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+ DEBUG(10,("samfs_is_offline: cannot malloc for segment stat info %s\nAssuming file is offline.\n", \
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+ path));
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+ offline = true;
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+ }
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+
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+ }
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+ return offline;
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+}
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+
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+/*
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+ * release a file-command to SAM-stagger
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+ */
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+extern int sam_release(const char *path, const char *command);
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+
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+/*
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+ * samfs_set_offline()
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+ *
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+ * Release the local file in the sense of SAM-QFS.
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+ * See sam_release(3) for details.
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+ *
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+ */
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+static int samfs_set_offline(struct vfs_handle_struct *handle, const char *path)
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+{
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+ int result;
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+
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+ result = sam_release(path, "i");
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+ if (result != 0) {
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+ DEBUG(10,("samfs_set_offline: sam_release %s returned %s\n", \
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+ path, strerror(errno)));
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+ return -1;
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+ }
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+ return 0;
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+}
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+
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+/* VFS operations structure */
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+
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+static struct vfs_fn_pointers samfs_fns = {
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+ .is_offline = samfs_is_offline,
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+ .set_offline = samfs_set_offline
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+};
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+
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+NTSTATUS vfs_samfs_init(void);
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+NTSTATUS vfs_samfs_init(void)
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+{
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+ return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, SAMFS_MODULE_NAME,
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+ &samfs_fns);
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+}
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