#! /bin/sh /usr/share/dpatch/dpatch-run
##
## DP: Add linux specific rawio capability allocation to work with kernels > 2.6.8

@DPATCH@
diff -urNad cdrtools-2.01.01~/RULES/os-linux.id cdrtools-2.01.01/RULES/os-linux.id
--- cdrtools-2.01.01~/RULES/os-linux.id	2006-03-19 21:12:06.000000000 +0100
+++ cdrtools-2.01.01/RULES/os-linux.id	2006-03-19 21:12:14.997653576 +0100
@@ -22,3 +22,5 @@
 ###########################################################################
 O_ARCH=		linux
 -O_ARCH=	-$(O_ARCH)
+
+LIB_CAP= -lcap
diff -urNad cdrtools-2.01.01~/cdrecord/Makefile cdrtools-2.01.01/cdrecord/Makefile
--- cdrtools-2.01.01~/cdrecord/Makefile	2006-03-19 21:12:06.000000000 +0100
+++ cdrtools-2.01.01/cdrecord/Makefile	2006-03-19 21:17:02.116004952 +0100
@@ -34,6 +34,7 @@
 		../include/scg/scsireg.h ../include/scg/scsitransp.h
 #LIBS=		-lschily $(LIB_SOCKET)
 LIBS=		-lrscg -lscg $(LIB_VOLMGT) -ledc_ecc -ldeflt -lschily $(SCSILIB) $(LIB_SOCKET)
+LIBS=		-lrscg -lscg $(LIB_VOLMGT) -ledc_ecc -ldeflt -lschily $(SCSILIB) $(LIB_SOCKET) $(LIB_CAP)
 XMK_FILE=	Makefile.man Makefile.dfl
 
 ###########################################################################
diff -urNad cdrtools-2.01.01~/cdrecord/cdrecord.c cdrtools-2.01.01/cdrecord/cdrecord.c
--- cdrtools-2.01.01~/cdrecord/cdrecord.c	2006-03-19 21:12:14.227770616 +0100
+++ cdrtools-2.01.01/cdrecord/cdrecord.c	2006-03-19 21:12:14.999653272 +0100
@@ -60,6 +60,9 @@
 #include "defaults.h"
 #include "movesect.h"
 
+#ifdef __linux__
+#include <sys/capability.h> 	/* for rawio capability */
+#endif
 
 char	cdr_version[] = "2.01.01a06";
 
@@ -247,6 +250,10 @@
 LOCAL	void	set_wrmode	__PR((cdr_t *dp, int wmode, int tflags));
 LOCAL	void	linuxcheck	__PR((void));
 
+#ifdef __linux__
+LOCAL int get_cap   __PR((cap_value_t cap_array));
+#endif
+
 struct exargs {
 	SCSI	*scgp;
 	cdr_t	*dp;
@@ -542,6 +549,14 @@
 #endif
 			comerr("Panic cannot set back effective uid.\n");
 	}
+
+#ifdef __linux__
+	/* get the rawio capability */
+	if (get_cap(CAP_SYS_RAWIO))
+		perror("Error: Cannot gain SYS_RAWIO capability."
+			"Is cdrecord installed SUID root?\n");
+#endif
+
 	/*
 	 * WARNING: We now are no more able to do any privilleged operation
 	 * unless we have been called by root.
@@ -1068,6 +1083,12 @@
 			if (setreuid(-1, getuid()) < 0)
 				comerr("Panic cannot set back effective uid.\n");
 		}
+#ifdef __linux__
+		if (get_cap(CAP_SYS_RAWIO))
+			perror("Error: Cannot gain SYS_RAWIO capability."
+				"Is cdrecord installed SUID root?\n");
+#endif
+
 #endif
 	}
 	if ((*dp->cdr_set_speed_dummy)(scgp, dp, &speed) < 0) {
@@ -4806,3 +4827,18 @@
 #endif
 #endif
 }
+
+#ifdef __linux__
+LOCAL int
+get_cap(cap_array)
+	cap_value_t cap_array;
+{ 
+    	  int ret;
+	  cap_t capa;
+	  capa = cap_get_proc();
+	  cap_set_flag(capa, CAP_EFFECTIVE,  1, &cap_array, CAP_SET);
+	  ret = cap_set_proc(capa);
+	  cap_free(capa);
+	  return ret; 
+}
+#endif