S_ISREG           335 plugins/elements/gstfdsink.c   if (!S_ISREG (stat_results.st_mode))
S_ISREG           271 plugins/elements/gstfdsrc.c     if (!S_ISREG (stat_results.st_mode))
S_ISREG            74 plugins/elements/gstfilesrc.c #ifndef S_ISREG
S_ISREG          1006 plugins/elements/gstfilesrc.c   if (S_ISREG (stat_results.st_mode))