--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib-storage/index/dbox-single/sdbox-file.c	Tue Oct 06 19:22:42 2009 -0400
@@ -0,0 +1,120 @@
+/* Copyright (c) 2007-2009 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "eacces-error.h"
+#include "mkdir-parents.h"
+#include "sdbox-storage.h"
+#include "sdbox-file.h"
+
+#include <stdio.h>
+
+static void sdbox_file_init_paths(struct sdbox_file *file, const char *fname)
+{
+	i_free(file->file.primary_path);
+	i_free(file->file.alt_path);
+	file->file.primary_path =
+		i_strdup_printf("%s/%s", file->mbox->ibox.box.path, fname);
+	if (file->mbox->alt_path != NULL) {
+		file->file.alt_path =
+			i_strdup_printf("%s/%s", file->mbox->alt_path, fname);
+	}
+}
+
+struct dbox_file *sdbox_file_init(struct sdbox_mailbox *mbox, uint32_t uid)
+{
+	struct sdbox_file *file;
+	const char *fname;
+
+	file = i_new(struct sdbox_file, 1);
+	file->file.storage = &mbox->storage->storage;
+	file->mbox = mbox;
+	T_BEGIN {
+		if (uid != 0) {
+			fname = t_strdup_printf(SDBOX_MAIL_FILE_FORMAT, uid);
+			sdbox_file_init_paths(file, fname);
+			file->uid = uid;
+		} else {
+			file->file.primary_path =
+				i_strdup_printf("%s/%s",
+						file->mbox->ibox.box.path,
+						dbox_generate_tmp_filename());
+		}
+	} T_END;
+	dbox_file_init(&file->file);
+
+	if (uid == 0) {
+		file->file.fd = file->file.storage->v.
+			file_create_fd(&file->file, file->file.primary_path,
+				       FALSE);
+	}
+	return &file->file;
+}
+
+int sdbox_file_assign_uid(struct sdbox_file *file, uint32_t uid)
+{
+	const char *old_path, *new_fname, *new_path;
+
+	i_assert(file->uid == 0);
+	i_assert(uid != 0);
+
+	old_path = file->file.cur_path;
+	new_fname = t_strdup_printf(SDBOX_MAIL_FILE_FORMAT, uid);
+	new_path = t_strdup_printf("%s/%s", file->mbox->ibox.box.path,
+				   new_fname);
+	if (rename(old_path, new_path) < 0) {
+		mail_storage_set_critical(&file->file.storage->storage,
+					  "rename(%s, %s) failed: %m",
+					  old_path, new_path);
+		return -1;
+	}
+	sdbox_file_init_paths(file, new_fname);
+	file->uid = uid;
+	return 0;
+}
+
+int sdbox_file_create_fd(struct dbox_file *file, const char *path, bool parents)
+{
+	struct sdbox_file *sfile = (struct sdbox_file *)file;
+	struct mailbox *box = &sfile->mbox->ibox.box;
+	const char *p, *dir;
+	mode_t old_mask;
+	int fd;
+
+	old_mask = umask(0666 & ~box->file_create_mode);
+	fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
+	umask(old_mask);
+	if (fd == -1 && errno == ENOENT && parents &&
+	    (p = strrchr(path, '/')) != NULL) {
+		dir = t_strdup_until(path, p);
+		if (mkdir_parents_chgrp(dir, box->dir_create_mode,
+					box->file_create_gid,
+					box->file_create_gid_origin) < 0) {
+			mail_storage_set_critical(box->storage,
+				"mkdir_parents(%s) failed: %m", dir);
+			return -1;
+		}
+		/* try again */
+		old_mask = umask(0666 & ~box->file_create_mode);
+		fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
+		umask(old_mask);
+	}
+	if (fd == -1) {
+		mail_storage_set_critical(box->storage,
+			"open(%s, O_CREAT) failed: %m", path);
+	} else if (box->file_create_gid == (gid_t)-1) {
+		/* no group change */
+	} else if (fchown(fd, (uid_t)-1, box->file_create_gid) < 0) {
+		if (errno == EPERM) {
+			mail_storage_set_critical(box->storage, "%s",
+				eperm_error_get_chgrp("fchown", path,
+					box->file_create_gid,
+					box->file_create_gid_origin));
+		} else {
+			mail_storage_set_critical(box->storage,
+				"fchown(%s, -1, %ld) failed: %m",
+				path, (long)box->file_create_gid);
+		}
+		/* continue anyway */
+	}
+	return fd;
+}