* New Bazaar snapshot.

- Add btrfs probing support, currently only in the single-device case
    (closes: #540786).
  - Fix grub-emu build on mips/powerpc/sparc.

ChangeLog

@@ -1,3 +1,73 @@
+2010-06-02  Colin Watson  <cjwatson@ubuntu.com>
+
+	* conf/any-emu.rmk (kernel_img_SOURCES) [!x86]: Include
+	kern/$(target_cpu)/cache.S even if TARGET_NO_MODULES = yes.
+
+2010-06-01  Colin Watson  <cjwatson@ubuntu.com>
+
+	Add btrfs probing support, currently only in the single-device case.
+
+	* kern/emu/getroot.c (find_root_device_from_mountinfo): New
+	function.
+	(grub_guess_root_device): Call find_root_device_from_mountinfo
+	before looking in /dev.
+
+2010-05-31  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* disk/i386/pc/biosdisk.c (grub_biosdisk_open): Use
+	GRUB_DISK_SIZE_UNKNOWN.
+	* disk/ieee1275/ofdisk.c (grub_ofdisk_open): Likewise.
+
+2010-05-31  Jiro SEKIBA <jir@unicus.jp>
+
+	* include/grub/disk.h (GRUB_DISK_SIZE_UNKNOWN): New macro.
+	* fs/nilfs.c: Support 2nd super block in case 1st one is accidently
+	corrupted or not synced properly.
+
+2010-05-31  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* normal/main.c (grub_normal_add_menu_entry): Avoid going out of args.
+	Reported by: Seth Goldberg.
+
+2010-05-31  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* loader/multiboot_mbi2.c (grub_multiboot_make_mbi): Fix incorrect
+	addition of dest.
+	Reported by: Seth Goldberg.
+
+2010-05-31  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* commands/setpci.c (grub_setpci_iter): Fix an incorrect function check.
+	Reported by: Seth Goldberg.
+
+2010-05-31  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* loader/multiboot_elfxx.c (grub_multiboot_load_elfXX) [__mips]: Check
+	64-bit address as signed on MIPS.
+
+2010-05-28  Colin Watson  <cjwatson@ubuntu.com>
+
+	* configure.ac: AC_PROG_LEX sets LEX to ":" if lex is missing, not
+	to the empty string.
+
+2010-05-28  BVK Chaitanya  <bvk.groups@gmail.com>
+
+	Fix grub-emu issues on NetBSD, with gcc 4.1.3.
+
+	* conf/any-emu.rmk: Remove unnecessary COMMON_CFLAGS.
+	* include/grub/emu/misc.h (canonicalize_file_name): New Prototype.
+	* kern/misc.c (__enable_execute_stack): Disable on
+	GRUB_MACHINE_EMU.
+
+2010-05-28  Colin Watson  <cjwatson@ubuntu.com>
+
+	Make grub-probe work with symbolic links under /dev/mapper as well
+	as with real block devices.  The Linux world seems to be (at best)
+	in transition here, and GRUB shouldn't get caught in the middle.
+
+	* kern/emu/getroot.c (find_root_device): Follow symbolic links under
+	/dev/mapper.
+
 2010-05-27  Colin Watson  <cjwatson@ubuntu.com>
 
 	* util/grub-script-check.c (main): Ensure defined behaviour on empty

commands/setpci.c

@@ -96,7 +96,7 @@ grub_setpci_iter (grub_pci_device_t dev, grub_pci_id_t pciid)
   if (check_device && grub_pci_get_device (dev) != device)
     return 0;
 
-  if (check_function && grub_pci_get_function (dev) != device)
+  if (check_function && grub_pci_get_function (dev) != function)
     return 0;
 
   addr = grub_pci_make_address (dev, regaddr);

conf/any-emu.rmk

@@ -1,7 +1,5 @@
 # -*- makefile -*-
 
-COMMON_CFLAGS += -nostdinc -isystem $(shell $(TARGET_CC) -print-file-name=include)
-
 kernel_img_RELOCATABLE = yes
 pkglib_PROGRAMS = kernel.img
 kernel_img_SOURCES = kern/device.c kern/disk.c kern/dl.c kern/env.c	\
@@ -22,14 +20,14 @@ TARGET_NO_STRIP = yes
 
 ifneq ($(TARGET_NO_MODULES), yes)
 kernel_img_SOURCES += symlist.c kern/$(target_cpu)/dl.c
+else
+kernel_img_SOURCES += grub_emu_init.c
+endif
 ifneq ($(target_cpu), i386)
 ifneq ($(target_cpu), x86_64)
 kernel_img_SOURCES += kern/$(target_cpu)/cache.S
 endif
 endif
-else
-kernel_img_SOURCES += grub_emu_init.c
-endif
 
 # For halt.mod.
 pkglib_MODULES += halt.mod

configure.ac

@@ -192,7 +192,7 @@ AC_PROG_LEX
 AC_PROG_MAKE_SET
 AC_PROG_MKDIR_P
 
-if test "x$LEX" = x; then
+if test "x$LEX" = "x:"; then
   AC_MSG_ERROR([flex is not found])
 else
   version=`$LEX --version | $AWK '{ split($NF,x,"."); print x[[1]]*10000+x[[2]]*100+x[[3]]; }'`

debian/changelog

@@ -1,5 +1,11 @@
-grub2 (1.98+20100527-3) UNRELEASED; urgency=low
+grub2 (1.98+20100602-1) UNRELEASED; urgency=low
 
+  * New Bazaar snapshot.
+    - Add btrfs probing support, currently only in the single-device case
+      (closes: #540786).
+    - Fix grub-emu build on mips/powerpc/sparc.
+
+  [ Colin Watson ]
   * Reorganise configure and build targets in debian/rules to use stamp
     files.  configure/* never existed and build/* was always a directory, so
     make never considered either of them up to date (closes: #450505).

debian/patches/909_mapper_symlink.diff

@@ -1,37 +0,0 @@
-Description: Make grub-probe work with symlinks under /dev/mapper
- Previously, real block devices were more common here, but the Linux world
- seems to be moving towards symlinks.  GRUB shouldn't get caught in the
- middle and should just work with both.
-Author: Colin Watson <cjwatson@ubuntu.com>
-Bug-Debian: http://bugs.debian.org/550704
-Forwarded: http://lists.gnu.org/archive/html/grub-devel/2010-05/msg00196.html
-Applied-Upstream: http://bazaar.launchpad.net/~vcs-imports/grub/grub2-bzr/revision/2403
-Last-Update: 2010-05-28
-
-Index: b/kern/emu/getroot.c
-===================================================================
---- a/kern/emu/getroot.c
-+++ b/kern/emu/getroot.c
-@@ -126,9 +126,20 @@
- 	/* Ignore any error.  */
- 	continue;
- 
--      if (S_ISLNK (st.st_mode))
--	/* Don't follow symbolic links.  */
-+      if (S_ISLNK (st.st_mode)) {
-+#ifdef __linux__
-+	if (strcmp (dir, "mapper") == 0) {
-+	  /* Follow symbolic links under /dev/mapper/; the canonical name
-+	     may be something like /dev/dm-0, but the names under
-+	     /dev/mapper/ are more human-readable and so we prefer them if
-+	     we can get them.  */
-+	  if (stat (ent->d_name, &st) < 0)
-+	    continue;
-+	} else
-+#endif /* __linux__ */
-+	/* Don't follow other symbolic links.  */
- 	continue;
-+      }
- 
-       if (S_ISDIR (st.st_mode))
- 	{

debian/patches/series

@@ -7,4 +7,3 @@
 904_disable_floppies.diff
 907_grub.cfg_400.diff
 908_gfxpayload_keep_default.diff
-909_mapper_symlink.diff

disk/i386/pc/biosdisk.c

@@ -120,7 +120,8 @@ grub_biosdisk_open (const char *name, grub_disk_t disk)
     {
       data->flags = GRUB_BIOSDISK_FLAG_LBA | GRUB_BIOSDISK_FLAG_CDROM;
       data->sectors = 32;
-      total_sectors = GRUB_ULONG_MAX;  /* TODO: get the correct size.  */
+      /* TODO: get the correct size.  */
+      total_sectors = GRUB_DISK_SIZE_UNKNOWN;
     }
   else if (drive & 0x80)
     {

disk/ieee1275/ofdisk.c

@@ -204,7 +204,7 @@ grub_ofdisk_open (const char *name, grub_disk_t disk)
   /* XXX: There is no property to read the number of blocks.  There
      should be a property `#blocks', but it is not there.  Perhaps it
      is possible to use seek for this.  */
-  disk->total_sectors = 0xFFFFFFFFUL;
+  disk->total_sectors = GRUB_DISK_SIZE_UNKNOWN;
 
   disk->id = (unsigned long) op;
 

fs/nilfs2.c

@@ -49,6 +49,13 @@
 #define NILFS_BTREE_LEVEL_NODE_MIN      (NILFS_BTREE_LEVEL_DATA + 1)
 #define NILFS_BTREE_LEVEL_MAX           14
 
+/* nilfs 1st super block posission from beginning of the partition
+   in 512 block size */
+#define NILFS_1ST_SUPER_BLOCK	2
+/* nilfs 2nd super block posission from end of the partition
+   in 512 block size */
+#define NILFS_2ND_SUPER_BLOCK	8
+
 struct grub_nilfs2_inode
 {
   grub_uint64_t i_blocks;
@@ -703,6 +710,52 @@ grub_nilfs2_valid_sb (struct grub_nilfs2_super_block *sbp)
   return 1;
 }
 
+static grub_err_t
+grub_nilfs2_load_sb (struct grub_nilfs2_data *data)
+{
+  grub_disk_t disk = data->disk;
+  struct grub_nilfs2_super_block sb2;
+  grub_uint64_t partition_size;
+  int valid[2];
+  int swp = 0;
+
+  /* Read first super block. */
+  grub_disk_read (disk, NILFS_1ST_SUPER_BLOCK, 0,
+		  sizeof (struct grub_nilfs2_super_block), &data->sblock);
+  /* Make sure if 1st super block is valid.  */
+  valid[0] = grub_nilfs2_valid_sb (&data->sblock);
+
+  partition_size = grub_disk_get_size (disk);
+  if (partition_size != GRUB_DISK_SIZE_UNKNOWN)
+    {
+      /* Read second super block. */
+      grub_disk_read (disk, partition_size - NILFS_2ND_SUPER_BLOCK, 0,
+		      sizeof (struct grub_nilfs2_super_block), &sb2);
+      /* Make sure if 2nd super block is valid.  */
+      valid[1] = grub_nilfs2_valid_sb (&sb2);
+    }
+  else
+    /* 2nd super block may not exist, so it's invalid. */
+    valid[1] = 0;
+
+
+
+  if (!valid[0] && !valid[1])
+    return grub_error (GRUB_ERR_BAD_FS, "not a nilfs2 filesystem");
+
+  swp = valid[1] && (!valid[0] ||
+		     grub_le_to_cpu64 (data->sblock.s_last_cno) <
+		     grub_le_to_cpu64 (sb2.s_last_cno));
+
+  /* swap if first super block is invalid or older than second one. */
+  if (swp)
+    grub_memcpy (&data->sblock, &sb2,
+		 sizeof (struct grub_nilfs2_super_block));
+
+  grub_errno = GRUB_ERR_NONE;
+  return grub_errno;
+}
+
 static struct grub_nilfs2_data *
 grub_nilfs2_mount (grub_disk_t disk)
 {
@@ -717,19 +770,13 @@ grub_nilfs2_mount (grub_disk_t disk)
   if (!data)
     return 0;
 
+  data->disk = disk;
+
   /* Read the superblock.  */
-  grub_disk_read (disk, 1 * 2, 0, sizeof (struct grub_nilfs2_super_block),
+  grub_nilfs2_load_sb (data);
-		  &data->sblock);
   if (grub_errno)
     goto fail;
 
-  /* Make sure this is an nilfs2 filesystem.  */
-  if (!grub_nilfs2_valid_sb (&data->sblock))
-    {
-      grub_error (GRUB_ERR_BAD_FS, "not a nilfs2 filesystem");
-      goto fail;
-    }
-
   nilfs2_block_count = (1 << LOG2_NILFS2_BLOCK_SIZE (data));
 
   /* Read the last segment summary. */
@@ -748,8 +795,6 @@ grub_nilfs2_mount (grub_disk_t disk)
   if (grub_errno)
     goto fail;
 
-  data->disk = disk;
-
   grub_nilfs2_read_last_checkpoint (data, &last_checkpoint);
 
   if (grub_errno)

include/grub/disk.h

@@ -138,6 +138,9 @@ typedef struct grub_disk_memberlist *grub_disk_memberlist_t;
 #define GRUB_DISK_CACHE_SIZE	8
 #define GRUB_DISK_CACHE_BITS	3
 
+/* Return value of grub_disk_get_size() in case disk size is unknown. */
+#define GRUB_DISK_SIZE_UNKNOWN	 0xffffffffffffffffULL
+
 /* This is called from the memory manager.  */
 void grub_disk_cache_invalidate_all (void);
 

include/grub/emu/misc.h

@@ -46,5 +46,6 @@ int EXPORT_FUNC(asprintf) (char **buf, const char *fmt, ...);
 #endif
 
 char * EXPORT_FUNC(xasprintf) (const char *fmt, ...);
+extern char * canonicalize_file_name (const char *path);
 
 #endif /* GRUB_EMU_MISC_H */

kern/emu/getroot.c

@@ -80,6 +80,86 @@ xgetcwd (void)
   return path;
 }
 
+#ifdef __linux__
+
+/* Statting something on a btrfs filesystem always returns a virtual device
+   major/minor pair rather than the real underlying device, because btrfs
+   can span multiple underlying devices (and even if it's currently only
+   using a single device it can be dynamically extended onto another).  We
+   can't deal with the multiple-device case yet, but in the meantime, we can
+   at least cope with the single-device case by scanning
+   /proc/self/mountinfo.  */
+static char *
+find_root_device_from_mountinfo (const char *dir)
+{
+  FILE *fp;
+  char *buf = NULL;
+  size_t len = 0;
+  char *ret = NULL;
+
+  fp = fopen ("/proc/self/mountinfo", "r");
+  if (! fp)
+    return NULL; /* fall through to other methods */
+
+  while (getline (&buf, &len, fp) > 0)
+    {
+      int mnt_id, parent_mnt_id;
+      unsigned int major, minor;
+      char enc_root[PATH_MAX], enc_path[PATH_MAX];
+      int count;
+      size_t enc_path_len;
+      const char *sep;
+      char fstype[PATH_MAX], device[PATH_MAX];
+      struct stat st;
+
+      if (sscanf (buf, "%d %d %u:%u %s %s%n",
+		  &mnt_id, &parent_mnt_id, &major, &minor, enc_root, enc_path,
+		  &count) < 6)
+	continue;
+
+      if (strcmp (enc_root, "/") != 0)
+	continue; /* only a subtree is mounted */
+
+      enc_path_len = strlen (enc_path);
+      if (strncmp (dir, enc_path, enc_path_len) != 0 ||
+	  (dir[enc_path_len] && dir[enc_path_len] != '/'))
+	continue;
+
+      /* This is a parent of the requested directory.  /proc/self/mountinfo
+	 is in mount order, so it must be the closest parent we've
+	 encountered so far.  If it's virtual, return its device node;
+	 otherwise, carry on to try to find something closer.  */
+
+      free (ret);
+      ret = NULL;
+
+      if (major != 0)
+	continue; /* not a virtual device */
+
+      sep = strstr (buf + count, " - ");
+      if (!sep)
+	continue;
+
+      sep += sizeof (" - ") - 1;
+      if (sscanf (sep, "%s %s", fstype, device) != 2)
+	continue;
+
+      if (stat (device, &st) < 0)
+	continue;
+
+      if (!S_ISBLK (st.st_mode))
+	continue; /* not a block device */
+
+      ret = strdup (device);
+    }
+
+  free (buf);
+  fclose (fp);
+  return ret;
+}
+
+#endif /* __linux__ */
+
 #ifdef __MINGW32__
 
 static char *
@@ -126,9 +206,20 @@ find_root_device (const char *dir, dev_t dev)
 	/* Ignore any error.  */
 	continue;
 
-      if (S_ISLNK (st.st_mode))
+      if (S_ISLNK (st.st_mode)) {
-	/* Don't follow symbolic links.  */
+#ifdef __linux__
+	if (strcmp (dir, "mapper") == 0) {
+	  /* Follow symbolic links under /dev/mapper/; the canonical name
+	     may be something like /dev/dm-0, but the names under
+	     /dev/mapper/ are more human-readable and so we prefer them if
+	     we can get them.  */
+	  if (stat (ent->d_name, &st) < 0)
+	    continue;
+	} else
+#endif /* __linux__ */
+	/* Don't follow other symbolic links.  */
 	continue;
+      }
 
       if (S_ISDIR (st.st_mode))
 	{
@@ -355,6 +446,12 @@ grub_guess_root_device (const char *dir)
 #else /* !__GNU__ */
   struct stat st;
 
+#ifdef __linux__
+  os_dev = find_root_device_from_mountinfo (dir);
+  if (os_dev)
+    return os_dev;
+#endif /* __linux__ */
+
   if (stat (dir, &st) < 0)
     grub_util_error ("cannot stat `%s'", dir);
 

kern/misc.c

@@ -1058,7 +1058,7 @@ grub_abort (void)
 void abort (void) __attribute__ ((alias ("grub_abort")));
 #endif
 
-#if defined(NEED_ENABLE_EXECUTE_STACK) && !defined(GRUB_UTIL)
+#if defined(NEED_ENABLE_EXECUTE_STACK) && !defined(GRUB_UTIL) && !defined(GRUB_MACHINE_EMU)
 /* Some gcc versions generate a call to this function
    in trampolines for nested functions.  */
 void __enable_execute_stack (void *addr __attribute__ ((unused)))
@@ -1075,3 +1075,4 @@ void __deregister_frame_info (void)
 {
 }
 #endif
+

loader/multiboot_elfxx.c

@@ -74,7 +74,11 @@ CONCAT(grub_multiboot_load_elf, XX) (grub_file_t file, void *buffer)
   if (ehdr->e_phoff + ehdr->e_phnum * ehdr->e_phentsize > MULTIBOOT_SEARCH)
     return grub_error (GRUB_ERR_BAD_OS, "program header at a too high offset");
 
-#ifdef MULTIBOOT_LOAD_ELF64
+#if defined (MULTIBOOT_LOAD_ELF64) && defined (__mips)
+  /* We still in 32-bit mode.  */
+  if (ehdr->e_entry < 0xffffffff80000000ULL)
+    return grub_error (GRUB_ERR_BAD_OS, "invalid entry point for ELF64");
+#else
   /* We still in 32-bit mode.  */
   if (ehdr->e_entry > 0xffffffff)
     return grub_error (GRUB_ERR_BAD_OS, "invalid entry point for ELF64");

loader/multiboot_mbi2.c

@@ -496,7 +496,7 @@ grub_multiboot_make_mbi (void *orig, grub_uint32_t dest, grub_off_t buf_off,
 	  = (struct multiboot_tag_module *) ptrorig;
 	tag->type = MULTIBOOT_TAG_TYPE_MODULE;
 	tag->size = sizeof (struct multiboot_tag_module) + cur->cmdline_size;
-	tag->mod_start = dest + cur->start;
+	tag->mod_start = cur->start;
 	tag->mod_end = tag->mod_start + cur->size;
 	grub_memcpy (tag->cmdline, cur->cmdline, cur->cmdline_size);
 	ptrorig += ALIGN_UP (tag->size, MULTIBOOT_TAG_ALIGN);

normal/main.c

@@ -204,7 +204,7 @@ grub_normal_add_menu_entry (int argc, const char **args,
   for (i = 0; i < argc; i++)
     {
       /* Capture arguments.  */
-      if (grub_strncmp ("--", args[i], 2) == 0)
+      if (grub_strncmp ("--", args[i], 2) == 0 && i + 1 < argc)
 	{
 	  const char *arg = &args[i][2];