util-linux/util-linux-2.12-mount_guessfstype.diff

--- util-linux-2.12q/configure
+++ util-linux-2.12q/configure
@@ -190,6 +190,7 @@
 
 #
 # H9. For raw.c: do we have <linux/raw.h>?
+# H10. For guessfstype of CD-Extra, do we have <linux/cdrom.h>?
 #
 if ./testincl "linux/raw.h"; then
         echo "HAVE_RAW_H=yes" >> make_include
@@ -552,6 +553,12 @@
 	echo "HAVE_XGETTEXT=no" >> make_include
 fi
 
+#
+# H10. For guessfstype of CD-Extra, do we have <linux/cdrom.h>
+#
+if ./testincl "linux/cdrom.h"; then
+	echo "#define HAVE_cdrom_h" >> defines.h
+fi
 
 #
 # 8. For err.c: do we have __progname?
--- util-linux-2.12q/mount/mount_guess_fstype.c
+++ util-linux-2.12q/mount/mount_guess_fstype.c
@@ -26,6 +26,9 @@
  * 2001-10-26 Tim Launchbury
  * added sysv magic.
  *
+ * 2003-11-21 Mads Martin Joergensen <mmj@suse.de>
+ * added guessfstype support for CD-Extra
+ *
  * aeb - many changes.
  *
  */
@@ -37,11 +40,16 @@
 #include <unistd.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <sys/ioctl.h>
 #include "linux_fs.h"
 #include "mount_blkid.h"
 #include "mount_guess_fstype.h"
 #include "sundries.h"		/* for xstrdup */
 #include "nls.h"
+#include "../defines.h"
+#ifdef HAVE_cdrom_h
+#include <linux/cdrom.h>
+#endif
 
 #define ETC_FILESYSTEMS		"/etc/filesystems"
 #define PROC_FILESYSTEMS	"/proc/filesystems"
@@ -249,7 +257,51 @@
       return 0;
 
     /* do seeks and reads in disk order, otherwise a very short
-       partition may cause a failure because of read error */
+       partition may cause a failure because of read error
+       Rearranged a tiny bit to check ext2/3 before vfat. We still
+       have to make sure it's not iso9660 first, or otherwise we
+       might bail out wrongly due to an io-error */
+
+    if (!type) {
+	 /* block 0 */
+	 if (lseek(fd, 0, SEEK_SET) != 0
+	     || read(fd, (char *) &xsb, sizeof(xsb)) != sizeof(xsb))
+	      goto try_iso9660;
+    }
+
+    if (!type) {
+	/* block 1 */
+	if (lseek(fd, 1024, SEEK_SET) != 1024 ||
+	    read(fd, (char *) &sb, sizeof(sb)) != sizeof(sb))
+		goto io_error;
+
+	/* ext2 has magic in little-endian on disk, so "swapped" is
+	   superfluous; however, there have existed strange byteswapped
+	   PPC ext2 systems */
+	if (ext2magic(sb.e2s) == EXT2_SUPER_MAGIC ||
+	    ext2magic(sb.e2s) == EXT2_PRE_02B_MAGIC ||
+	    ext2magic(sb.e2s) == swapped(EXT2_SUPER_MAGIC)) {
+		type = "ext2";
+
+	     /* maybe even ext3? */
+	     if ((assemble4le(sb.e2s.s_feature_compat)
+		  & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
+		 assemble4le(sb.e2s.s_journal_inum) != 0)
+		     type = "ext3";	/* "ext3,ext2" */
+	}
+
+	else if (minixmagic(sb.ms) == MINIX_SUPER_MAGIC ||
+		 minixmagic(sb.ms) == MINIX_SUPER_MAGIC2 ||
+		 minixmagic(sb.ms) == MINIX2_SUPER_MAGIC ||
+		 minixmagic(sb.ms) == MINIX2_SUPER_MAGIC2)
+		type = "minix";
+
+	else if (extmagic(sb.es) == EXT_SUPER_MAGIC)
+		type = "ext";
+
+	else if (vxfsmagic(sb.vs) == VXFS_SUPER_MAGIC)
+		type = "vxfs";
+    }
 
     if (!type) {
 	 /* block 0 */
@@ -307,40 +359,6 @@
 		    type = "sysv";
     }
 
-    if (!type) {
-	/* block 1 */
-	if (lseek(fd, 1024, SEEK_SET) != 1024 ||
-	    read(fd, (char *) &sb, sizeof(sb)) != sizeof(sb))
-		goto io_error;
-
-	/* ext2 has magic in little-endian on disk, so "swapped" is
-	   superfluous; however, there have existed strange byteswapped
-	   PPC ext2 systems */
-	if (ext2magic(sb.e2s) == EXT2_SUPER_MAGIC ||
-	    ext2magic(sb.e2s) == EXT2_PRE_02B_MAGIC ||
-	    ext2magic(sb.e2s) == swapped(EXT2_SUPER_MAGIC)) {
-		type = "ext2";
-
-	     /* maybe even ext3? */
-	     if ((assemble4le(sb.e2s.s_feature_compat)
-		  & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
-		 assemble4le(sb.e2s.s_journal_inum) != 0)
-		     type = "ext3";	/* "ext3,ext2" */
-	}
-
-	else if (minixmagic(sb.ms) == MINIX_SUPER_MAGIC ||
-		 minixmagic(sb.ms) == MINIX_SUPER_MAGIC2 ||
-		 minixmagic(sb.ms) == swapped(MINIX_SUPER_MAGIC2) ||
-		 minixmagic(sb.ms) == MINIX2_SUPER_MAGIC ||
-		 minixmagic(sb.ms) == MINIX2_SUPER_MAGIC2)
-		type = "minix";
-
-	else if (extmagic(sb.es) == EXT_SUPER_MAGIC)
-		type = "ext";
-
-	else if (vxfsmagic(sb.vs) == VXFS_SUPER_MAGIC)
-		type = "vxfs";
-    }
 
     if (!type) {
 	/* block 1 */
@@ -416,8 +434,34 @@
 	 /* block 32 */
     try_iso9660:
 	 if (lseek(fd, 0x8000, SEEK_SET) != 0x8000
-	     || read(fd, (char *) &isosb, sizeof(isosb)) != sizeof(isosb))
-	      goto io_error;
+	     || read(fd, (char *) &isosb, sizeof(isosb)) != sizeof(isosb)) {
+#ifdef HAVE_cdrom_h
+		 /* Try and see if we have an iso9660 data track later on */
+		 char toc_header[2];
+		 struct cdrom_tocentry *toc[CDROM_LEADOUT + 1];
+		 int i, offset;
+
+		 if (ioctl(fd, CDROMREADTOCHDR, &toc_header))
+			 goto io_error;
+		 for (i = toc_header[0]; i <= toc_header[1]; i++) {
+			 toc[i] = malloc(sizeof(struct cdrom_tocentry));
+			 memset(toc[i],0,sizeof(struct cdrom_tocentry));
+			 toc[i]->cdte_track  = i;
+			 toc[i]->cdte_format = CDROM_LBA;
+			 if(ioctl(fd,CDROMREADTOCENTRY,toc[i]))
+				 goto io_error;
+			 if((toc[i]->cdte_ctrl & CDROM_DATA_TRACK)) {
+				 offset = 2048 * (toc[i]->cdte_addr.lba + 16);
+				 if(lseek(fd, offset, SEEK_SET) != offset)
+					 goto io_error;
+				 if(read(fd,(char *) &isosb,sizeof(isosb))==-1)
+					 goto io_error;
+			 }
+		 }
+#else
+		 goto io_error;
+#endif
+	 }
 
 	 if (strncmp(isosb.hs.id, HS_STANDARD_ID, sizeof(isosb.hs.id)) == 0) {
 		 /* "CDROM" */