Improved do_lseek()'s failure message.

diff --git a/fileio.c b/fileio.c
index 7340970..45366f5 100644 (file)
--- a/fileio.c
+++ b/fileio.c
@@ -219,8 +219,11 @@ char *map_ptr(struct map_struct *map, OFF_T offset, int32 len)
                exit_cleanup(RERR_FILEIO);
        } else {
                if (map->p_fd_offset != read_start) {
-                       if (do_lseek(map->fd,read_start,SEEK_SET) != read_start) {
-                               rprintf(FERROR,"lseek failed in map_ptr\n");
+                       OFF_T ret = do_lseek(map->fd, read_start, SEEK_SET);
+                       if (ret != read_start) {
+                               rsyserr(FERROR, errno,
+                                       "lseek returned %.0f, not %.0f",
+                                       (double)ret, (double)read_start);
                                exit_cleanup(RERR_FILEIO);
                        }
                        map->p_fd_offset = read_start;