[Buildroot] [PATCH v10 1/2] fs/ext2: rename BR2_TARGET_ROOTFS_EXT2_BLOCKS -> BR2_TARGET_ROOTFS_EXT2_SIZE

[Buildroot] [PATCH v10 1/2] fs/ext2: rename BR2_TARGET_ROOTFS_EXT2_BLOCKS -> BR2_TARGET_ROOTFS_EXT2_SIZE

[Samuel Martin]

This change deprecates the ext2/3/4 rootfs size in blocks symbol in
favor of one that mimic the fs-size argument behavior of mkfs (i.e.
size in a human readable format accepting k, m, g or t suffix or their
upper-case variants).

This change also updates the defconfigs that used to set
BR2_TARGET_ROOTFS_EXT2_BLOCKS symbol.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

---
changes v9->v10:
- fix typo (Arnout)
- update legacy help text (Arnout)
- remove useless comment (Arnout)

changes v8->v9:
- fix BR2_TARGET_ROOTFS_EXT2_BLOCKS_WRAP condition (Arnout, ThomasP)

changes v7->v8:
- correctly wrap help text (Arnout)

changes v6->v7:
- rebase after usr/ removal

changes v5->v6:
- rebase
- fix typo (Peter)
- add comments in legacy (Arnout)
- quote EXT2_SIZE usage (Arnout)
- use more human-friendly size (defaults + defconfigs) (Arnout)
- trigger legacy when using the deprecated valid (Arnout)

changes v4->v5:
- new patch (Arnout)
---
 Config.in.legacy                            | 16 ++++++++++++++++
 configs/at91sam9x5ek_mmc_dev_defconfig      |  2 +-
 configs/beaglebone_qt5_defconfig            |  2 +-
 configs/firefly_rk3288_demo_defconfig       |  2 +-
 configs/minnowboard_max-graphical_defconfig |  3 +--
 configs/nanopi_neo_defconfig                |  2 +-
 configs/pc_x86_64_bios_defconfig            |  2 +-
 configs/pc_x86_64_efi_defconfig             |  2 +-
 configs/raspberrypi3_64_defconfig           |  2 +-
 fs/ext2/Config.in                           | 14 +++++++++-----
 fs/ext2/ext2.mk                             |  7 ++++++-
 11 files changed, 39 insertions(+), 15 deletions(-)

diff --git a/Config.in.legacy b/Config.in.legacy
index 12362da6f2..89c3c16297 100644
--- a/Config.in.legacy
+++ b/Config.in.legacy
@@ -152,6 +152,22 @@ config BR2_PACKAGE_HOST_MKE2IMG
 	  We now call mkfs directly to generate ext2/3/4 filesystem
 	  image, so mke2img is no longer necessary.
 
+config BR2_TARGET_ROOTFS_EXT2_BLOCKS
+	int "exact size in blocks has been removed"
+	default 0
+	help
+	  This option has been removed in favor of BR2_TARGET_ROOTFS_EXT2_SIZE.
+	  It has been set automatically to the value you had before.
+	  Set to 0 here to remove the warning.
+
+config BR2_TARGET_ROOTFS_EXT2_BLOCKS_WRAP
+	bool
+	default y if BR2_TARGET_ROOTFS_EXT2_BLOCKS != 0 && \
+		BR2_TARGET_ROOTFS_EXT2_BLOCKS != 61440 # deprecated default value
+	select BR2_LEGACY
+
+# Note: BR2_TARGET_ROOTFS_EXT2_BLOCKS_WRAP still referenced in fs/ext2/Config.in
+
 config BR2_TARGET_ROOTFS_EXT2_EXTRA_INODES
 	int "ext2 extra inodes has been removed" if BR2_TARGET_ROOTFS_EXT2_INODES = 0
 	default 0
diff --git a/configs/at91sam9x5ek_mmc_dev_defconfig b/configs/at91sam9x5ek_mmc_dev_defconfig
index 0060111fca..d704b8152a 100644
--- a/configs/at91sam9x5ek_mmc_dev_defconfig
+++ b/configs/at91sam9x5ek_mmc_dev_defconfig
@@ -81,7 +81,7 @@ BR2_PACKAGE_VIM=y
 # Filesystem
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_BLOCKS=120000
+BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 
 # Bootloaders
 BR2_TARGET_AT91BOOTSTRAP3=y
diff --git a/configs/beaglebone_qt5_defconfig b/configs/beaglebone_qt5_defconfig
index 34063739a2..4135f718ed 100644
--- a/configs/beaglebone_qt5_defconfig
+++ b/configs/beaglebone_qt5_defconfig
@@ -25,7 +25,7 @@ BR2_PACKAGE_TI_SGX_KM=y
 BR2_PACKAGE_TI_SGX_UM=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_BLOCKS=126976
+BR2_TARGET_ROOTFS_EXT2_SIZE="124M"
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
diff --git a/configs/firefly_rk3288_demo_defconfig b/configs/firefly_rk3288_demo_defconfig
index 0f4dd368c4..d394ede30e 100644
--- a/configs/firefly_rk3288_demo_defconfig
+++ b/configs/firefly_rk3288_demo_defconfig
@@ -25,7 +25,7 @@ BR2_PACKAGE_QT5BASE_EGLFS=y
 BR2_PACKAGE_MALI_T76X=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_BLOCKS=250000
+BR2_TARGET_ROOTFS_EXT2_SIZE="250M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
diff --git a/configs/minnowboard_max-graphical_defconfig b/configs/minnowboard_max-graphical_defconfig
index 1a2cd33be2..3540f9fa87 100644
--- a/configs/minnowboard_max-graphical_defconfig
+++ b/configs/minnowboard_max-graphical_defconfig
@@ -68,6 +68,5 @@ BR2_PACKAGE_STARTUP_NOTIFICATION=y
 # Filesystem image
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_BLOCKS=120000
+BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 # BR2_TARGET_ROOTFS_TAR is not set
-
diff --git a/configs/nanopi_neo_defconfig b/configs/nanopi_neo_defconfig
index a22705269d..aa464917b5 100644
--- a/configs/nanopi_neo_defconfig
+++ b/configs/nanopi_neo_defconfig
@@ -31,7 +31,7 @@ BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot-sunxi-with-spl.bin"
 # Build an sdcard image
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_BLOCKS=32768
+BR2_TARGET_ROOTFS_EXT2_SIZE="32M"
 BR2_TARGET_ROOTFS_EXT2_INODES=8192
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_PACKAGE_HOST_DOSFSTOOLS=y
diff --git a/configs/pc_x86_64_bios_defconfig b/configs/pc_x86_64_bios_defconfig
index d64f09a1dc..7e852f3650 100644
--- a/configs/pc_x86_64_bios_defconfig
+++ b/configs/pc_x86_64_bios_defconfig
@@ -17,7 +17,7 @@ BR2_TARGET_GRUB2=y
 # Filesystem / image
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_BLOCKS=120000
+BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/pc/post-image.sh"
 
diff --git a/configs/pc_x86_64_efi_defconfig b/configs/pc_x86_64_efi_defconfig
index ea2abc39be..f558c3e8cb 100644
--- a/configs/pc_x86_64_efi_defconfig
+++ b/configs/pc_x86_64_efi_defconfig
@@ -20,7 +20,7 @@ BR2_TARGET_GRUB2_X86_64_EFI=y
 # Filesystem / image
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_BLOCKS=120000
+BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/pc/post-image.sh"
 
diff --git a/configs/raspberrypi3_64_defconfig b/configs/raspberrypi3_64_defconfig
index 13a505b031..23db9ccb05 100644
--- a/configs/raspberrypi3_64_defconfig
+++ b/configs/raspberrypi3_64_defconfig
@@ -30,7 +30,7 @@ BR2_PACKAGE_HOST_MTOOLS=y
 # Filesystem / image
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
-BR2_TARGET_ROOTFS_EXT2_BLOCKS=120000
+BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/raspberrypi3-64/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/raspberrypi3-64/post-image.sh"
diff --git a/fs/ext2/Config.in b/fs/ext2/Config.in
index 9c58ac62ed..493f6c930c 100644
--- a/fs/ext2/Config.in
+++ b/fs/ext2/Config.in
@@ -44,12 +44,16 @@ config BR2_TARGET_ROOTFS_EXT2_REV
 config BR2_TARGET_ROOTFS_EXT2_LABEL
 	string "filesystem label"
 
-# 61440 = 60MB, i.e usually small enough to fit on a 64MB media
-config BR2_TARGET_ROOTFS_EXT2_BLOCKS
-	int "exact size in blocks"
-	default 61440
+config BR2_TARGET_ROOTFS_EXT2_SIZE
+	string "exact size"
+	default BR2_TARGET_ROOTFS_EXT2_BLOCKS if BR2_TARGET_ROOTFS_EXT2_BLOCKS_WRAP # legacy 2017.08
+	default "60M"
 	help
-	  Specify the file system size as a number of 1024-byte blocks.
+	  The size of the filesystem image. If it does not have a suffix,
+	  it is interpreted as power-of-two kilobytes. If it is suffixed
+	  by 'k', 'm', 'g', 't' (either upper-case or lower-case), then
+	  it is interpreted in power-of-two kilobytes, megabytes,
+	  gigabytes, terabytes, etc.
 
 config BR2_TARGET_ROOTFS_EXT2_INODES
 	int "exact number of inodes (leave at 0 for auto calculation)"
diff --git a/fs/ext2/ext2.mk b/fs/ext2/ext2.mk
index 99d03f10cf..fdd4a389a0 100644
--- a/fs/ext2/ext2.mk
+++ b/fs/ext2/ext2.mk
@@ -4,6 +4,11 @@
 #
 ################################################################################
 
+EXT2_SIZE = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_SIZE))
+ifeq ($(BR2_TARGET_ROOTFS_EXT2)-$(EXT2_SIZE),y-)
+$(error BR2_TARGET_ROOTFS_EXT2_SIZE cannot be empty)
+endif
+
 # qstrip results in stripping consecutive spaces into a single one. So the
 # variable is not qstrip-ed to preserve the integrity of the string value.
 EXT2_LABEL := $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL))
@@ -21,7 +26,7 @@ ROOTFS_EXT2_DEPENDENCIES = host-e2fsprogs
 define ROOTFS_EXT2_CMD
 	rm -f $@
 	$(HOST_DIR)/sbin/mkfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN) $(EXT2_OPTS) $@ \
-		 $(BR2_TARGET_ROOTFS_EXT2_BLOCKS)
+		"$(EXT2_SIZE)"
 endef
 
 rootfs-ext2-symlink:
-- 
2.13.2

[Buildroot] [PATCH v10 2/2] fs/ext2: Add BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS option

[Samuel Martin]

From: S?bastien Szymanski <sebastien.szymanski@armadeus.com>

This option lets the user specify mke2fs options and/or ext2/3/4
features.

Signed-off-by: S?bastien Szymanski <sebastien.szymanski@armadeus.com>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

---
changes v9->v10:
- none

changes v8->v9:
- none

changes v7->v8:
- typos (Arnout)

changes v6->v7:
- none

changes v5->v6:
- wrap help text at 70 chars. (Arnout)
- reword default value explainations (Arnout)

changes v4->v5:
- turn the options to accept any mke2fs options, not only ext2/3/4
  features (Arnout)
- add explaination for the default value for this new option (Arnout)

changes v3->v4:
- none

changes v2->v3:
- none

changes v1->v2:
- rebase
---
 fs/ext2/Config.in | 18 ++++++++++++++++++
 fs/ext2/ext2.mk   |  5 ++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/fs/ext2/Config.in b/fs/ext2/Config.in
index 493f6c930c..a98245c225 100644
--- a/fs/ext2/Config.in
+++ b/fs/ext2/Config.in
@@ -68,6 +68,24 @@ config BR2_TARGET_ROOTFS_EXT2_RESBLKS
 	  Traditionally, this has been 5%, and all ext-related tools still
 	  default to reserving 5% when creating a new ext filesystem.
 
+config BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS
+	string "additional mke2fs options"
+	default "-O ^64bit"
+	help
+	  Specify a space-separated list of mke2fs options, including any
+	  ext2/3/4 filesystem features.
+
+	  For more information about the mke2fs options, see the manual
+	  page mke2fs(8).
+
+	  For more information about the ext2/3/4 features which can be
+	  set, see then manual page ext4(5).
+
+	  The default is "-O ^64bit", i.e. disable the 64-bit filesystem.
+	  This is chosen because U-Boot versions before 2017.02 don't
+	  support that filesystem option, which may render the system
+	  unbootable if it is used.
+
 choice
 	prompt "Compression method"
 	default BR2_TARGET_ROOTFS_EXT2_NONE
diff --git a/fs/ext2/ext2.mk b/fs/ext2/ext2.mk
index fdd4a389a0..902e6639ee 100644
--- a/fs/ext2/ext2.mk
+++ b/fs/ext2/ext2.mk
@@ -9,6 +9,8 @@ ifeq ($(BR2_TARGET_ROOTFS_EXT2)-$(EXT2_SIZE),y-)
 $(error BR2_TARGET_ROOTFS_EXT2_SIZE cannot be empty)
 endif
 
+EXT2_MKFS_OPTS = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS))
+
 # qstrip results in stripping consecutive spaces into a single one. So the
 # variable is not qstrip-ed to preserve the integrity of the string value.
 EXT2_LABEL := $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL))
@@ -19,7 +21,8 @@ EXT2_OPTS = \
 	-r $(BR2_TARGET_ROOTFS_EXT2_REV) \
 	-N $(BR2_TARGET_ROOTFS_EXT2_INODES) \
 	-m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) \
-	-L "$(EXT2_LABEL)"
+	-L "$(EXT2_LABEL)" \
+	$(EXT2_MKFS_OPTS)
 
 ROOTFS_EXT2_DEPENDENCIES = host-e2fsprogs
 
-- 
2.13.2

[Buildroot] [PATCH v10 1/2] fs/ext2: rename BR2_TARGET_ROOTFS_EXT2_BLOCKS -> BR2_TARGET_ROOTFS_EXT2_SIZE

[Thomas Petazzoni]

Hello,

On Sun,  9 Jul 2017 07:00:38 +0200, Samuel Martin wrote:
> This change deprecates the ext2/3/4 rootfs size in blocks symbol in
> favor of one that mimic the fs-size argument behavior of mkfs (i.e.
> size in a human readable format accepting k, m, g or t suffix or their
> upper-case variants).
> 
> This change also updates the defconfigs that used to set
> BR2_TARGET_ROOTFS_EXT2_BLOCKS symbol.
> 
> Signed-off-by: Samuel Martin <s.martin49@gmail.com>
> Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
> 
> ---
> changes v9->v10:
> - fix typo (Arnout)
> - update legacy help text (Arnout)
> - remove useless comment (Arnout)

Both applied to master. Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com