+static int start_delete_delay_temp(void)
+{
+ char fnametmp[MAXPATHLEN];
+ int save_dry_run = dry_run;
+
+ dry_run = 0;
+ if (!get_tmpname(fnametmp, "deldelay")
+ || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
+ rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
+ inc_recurse ? "" : " -- switching to --delete-after");
+ delete_during = 0;
+ delete_after = !inc_recurse;
+ dry_run = save_dry_run;
+ return 0;
+ }
+ unlink(fnametmp);
+ dry_run = save_dry_run;
+ return 1;
+}
+
+static int flush_delete_delay(void)
+{
+ if (deldelay_fd < 0 && !start_delete_delay_temp())
+ return 0;
+ if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
+ rsyserr(FERROR, errno, "flush of delete-delay buffer");
+ delete_during = 0;
+ delete_after = !inc_recurse;
+ close(deldelay_fd);
+ return 0;
+ }
+ deldelay_cnt = 0;
+ return 1;
+}
+
+static int remember_delete(struct file_struct *file, const char *fname, int flags)
+{
+ int len;
+
+ if (deldelay_cnt == deldelay_size && !flush_delete_delay())
+ return 0;
+
+ if (flags & DEL_NO_UID_WRITE)
+ deldelay_buf[deldelay_cnt++] = '!';
+
+ while (1) {
+ len = snprintf(deldelay_buf + deldelay_cnt,
+ deldelay_size - deldelay_cnt,
+ "%x %s%c",
+ (int)file->mode, fname, '\0');
+ if ((deldelay_cnt += len) <= deldelay_size)
+ break;
+ deldelay_cnt -= len;
+ if (!flush_delete_delay())
+ return 0;
+ }
+
+ return 1;
+}
+
+static int read_delay_line(char *buf, int *flags_p)
+{
+ static int read_pos = 0;
+ int j, len, mode;
+ char *bp, *past_space;
+
+ while (1) {
+ for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
+ if (j < deldelay_cnt)
+ break;
+ if (deldelay_fd < 0) {
+ if (j > read_pos)
+ goto invalid_data;
+ return -1;
+ }
+ deldelay_cnt -= read_pos;
+ if (deldelay_cnt == deldelay_size)
+ goto invalid_data;
+ if (deldelay_cnt && read_pos) {
+ memmove(deldelay_buf, deldelay_buf + read_pos,
+ deldelay_cnt);
+ }
+ len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
+ deldelay_size - deldelay_cnt);
+ if (len == 0) {
+ if (deldelay_cnt) {
+ rprintf(FERROR,
+ "ERROR: unexpected EOF in delete-delay file.\n");
+ }
+ return -1;
+ }
+ if (len < 0) {
+ rsyserr(FERROR, errno,
+ "reading delete-delay file");
+ return -1;
+ }
+ deldelay_cnt += len;
+ read_pos = 0;
+ }
+
+ bp = deldelay_buf + read_pos;
+ if (*bp == '!') {
+ bp++;
+ *flags_p = DEL_NO_UID_WRITE;
+ } else
+ *flags_p = 0;
+
+ if (sscanf(bp, "%x ", &mode) != 1) {
+ invalid_data:
+ rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
+ return -1;
+ }
+ past_space = strchr(bp, ' ') + 1;
+ len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
+ read_pos = j + 1;
+
+ if (len > MAXPATHLEN) {
+ rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
+ return -1;
+ }
+
+ /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
+ * instead of returning a pointer to our buffer. */
+ memcpy(buf, past_space, len);
+
+ return mode;
+}
+
+static void do_delayed_deletions(char *delbuf)
+{
+ int mode, flags;
+
+ if (deldelay_fd >= 0) {
+ if (deldelay_cnt && !flush_delete_delay())
+ return;
+ lseek(deldelay_fd, 0, 0);
+ }
+ while ((mode = read_delay_line(delbuf, &flags)) >= 0)
+ delete_item(delbuf, mode, flags | DEL_RECURSE);
+ if (deldelay_fd >= 0)
+ close(deldelay_fd);
+}