[PATCH 1/3] fs: move struct timespec to include/linux/time.h

[PATCH 1/3] fs: move struct timespec to include/linux/time.h

[yegorslists]

From: Yegor Yefremov <yegorslists@googlemail.com>

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
---
 fs/ubifs/ubifs.h     | 7 -------
 include/linux/time.h | 5 +++++
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index c025d34..6b7139c 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -77,13 +77,6 @@ void iput(struct inode *inode);
 #define atomic_long_dec(a)
 #define	atomic_long_sub(a, b)
 
-/* linux/include/time.h */
-
-struct timespec {
-	time_t	tv_sec;		/* seconds */
-	long	tv_nsec;	/* nanoseconds */
-};
-
 /* linux/include/dcache.h */
 
 /*
diff --git a/include/linux/time.h b/include/linux/time.h
index 3942e82..3a1bb50 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -5,4 +5,9 @@
 
 #define NSEC_PER_SEC	1000000000L
 
+struct timespec {
+	time_t	tv_sec;		/* seconds */
+	long	tv_nsec;	/* nanoseconds */
+};
+
 #endif
-- 
2.1.4


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[PATCH 2/3] fs: introduce include/linux/fs.h

[yegorslists]

From: Yegor Yefremov <yegorslists@googlemail.com>

Move Linux file system structs from UBIFS to central place.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
---
 fs/ubifs/ubifs.h   | 128 +--------------------------------------------------
 include/linux/fs.h | 133 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 134 insertions(+), 127 deletions(-)
 create mode 100644 include/linux/fs.h

diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 6b7139c..2d0cd4c 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -34,8 +34,8 @@
 #include <common.h>
 #include <malloc.h>
 #include <lzo.h>
+#include <linux/fs.h>
 #include <linux/ctype.h>
-#include <linux/time.h>
 #include <linux/math64.h>
 #include <linux/rbtree.h>
 #include <linux/err.h>
@@ -92,132 +92,6 @@ struct qstr {
 	const char *name;
 };
 
-struct inode {
-	struct hlist_node	i_hash;
-	struct list_head	i_list;
-	struct list_head	i_sb_list;
-	struct list_head	i_dentry;
-	unsigned long		i_ino;
-	unsigned int		i_nlink;
-	uid_t			i_uid;
-	gid_t			i_gid;
-	dev_t			i_rdev;
-	u64			i_version;
-	loff_t			i_size;
-#ifdef __NEED_I_SIZE_ORDERED
-	seqcount_t		i_size_seqcount;
-#endif
-	struct timespec		i_atime;
-	struct timespec		i_mtime;
-	struct timespec		i_ctime;
-	unsigned int		i_blkbits;
-	unsigned short          i_bytes;
-	umode_t			i_mode;
-	spinlock_t		i_lock;	/* i_blocks, i_bytes, maybe i_size */
-	struct mutex		i_mutex;
-	struct rw_semaphore	i_alloc_sem;
-	const struct inode_operations	*i_op;
-	const struct file_operations	*i_fop;	/* former ->i_op->default_file_ops */
-	struct super_block	*i_sb;
-	struct file_lock	*i_flock;
-#ifdef CONFIG_QUOTA
-	struct dquot		*i_dquot[MAXQUOTAS];
-#endif
-	struct list_head	i_devices;
-	int			i_cindex;
-
-	__u32			i_generation;
-
-#ifdef CONFIG_DNOTIFY
-	unsigned long		i_dnotify_mask; /* Directory notify events */
-	struct dnotify_struct	*i_dnotify; /* for directory notifications */
-#endif
-
-#ifdef CONFIG_INOTIFY
-	struct list_head	inotify_watches; /* watches on this inode */
-	struct mutex		inotify_mutex;	/* protects the watches list */
-#endif
-
-	unsigned long		i_state;
-	unsigned long		dirtied_when;	/* jiffies of first dirtying */
-
-	unsigned int		i_flags;
-
-#ifdef CONFIG_SECURITY
-	void			*i_security;
-#endif
-	void			*i_private; /* fs or device private pointer */
-};
-
-struct super_block {
-	struct list_head	s_list;		/* Keep this first */
-	dev_t			s_dev;		/* search index; _not_ kdev_t */
-	unsigned long		s_blocksize;
-	unsigned char		s_blocksize_bits;
-	unsigned char		s_dirt;
-	unsigned long long	s_maxbytes;	/* Max file size */
-	struct file_system_type	*s_type;
-	const struct super_operations	*s_op;
-	struct dquot_operations	*dq_op;
-	struct quotactl_ops	*s_qcop;
-	const struct export_operations *s_export_op;
-	unsigned long		s_flags;
-	unsigned long		s_magic;
-	struct dentry		*s_root;
-	struct rw_semaphore	s_umount;
-	struct mutex		s_lock;
-	int			s_count;
-	int			s_syncing;
-	int			s_need_sync_fs;
-#ifdef CONFIG_SECURITY
-	void                    *s_security;
-#endif
-	struct xattr_handler	**s_xattr;
-
-	struct list_head	s_inodes;	/* all inodes */
-	struct list_head	s_dirty;	/* dirty inodes */
-	struct list_head	s_io;		/* parked for writeback */
-	struct list_head	s_more_io;	/* parked for more writeback */
-	struct hlist_head	s_anon;		/* anonymous dentries for (nfs) exporting */
-	struct list_head	s_files;
-	/* s_dentry_lru and s_nr_dentry_unused are protected by dcache_lock */
-	struct list_head	s_dentry_lru;	/* unused dentry lru */
-	int			s_nr_dentry_unused;	/* # of dentry on lru */
-
-	struct block_device	*s_bdev;
-	struct mtd_info		*s_mtd;
-	struct list_head	s_instances;
-
-	int			s_frozen;
-	wait_queue_head_t	s_wait_unfrozen;
-
-	char s_id[32];				/* Informational name */
-
-	void 			*s_fs_info;	/* Filesystem private info */
-
-	/*
-	 * The next field is for VFS *only*. No filesystems have any business
-	 * even looking at it. You had been warned.
-	 */
-	struct mutex s_vfs_rename_mutex;	/* Kludge */
-
-	/* Granularity of c/m/atime in ns.
-	   Cannot be worse than a second */
-	u32		   s_time_gran;
-
-	/*
-	 * Filesystem subtype.  If non-empty the filesystem type field
-	 * in /proc/mounts will be "type.subtype"
-	 */
-	char *s_subtype;
-
-	/*
-	 * Saved mount options for lazy filesystems using
-	 * generic_show_options()
-	 */
-	char *s_options;
-};
-
 struct file_system_type {
 	const char *name;
 	int fs_flags;
diff --git a/include/linux/fs.h b/include/linux/fs.h
new file mode 100644
index 0000000..9db334c
--- /dev/null
+++ b/include/linux/fs.h
@@ -0,0 +1,133 @@
+#ifndef _LINUX_FS_H
+#define _LINUX_FS_H
+
+#include <linux/barebox-wrapper.h>
+#include <linux/list.h>
+#include <linux/time.h>
+
+struct inode {
+	struct hlist_node	i_hash;
+	struct list_head	i_list;
+	struct list_head	i_sb_list;
+	struct list_head	i_dentry;
+	unsigned long		i_ino;
+	unsigned int		i_nlink;
+	uid_t			i_uid;
+	gid_t			i_gid;
+	dev_t			i_rdev;
+	u64			i_version;
+	loff_t			i_size;
+#ifdef __NEED_I_SIZE_ORDERED
+	seqcount_t		i_size_seqcount;
+#endif
+	struct timespec		i_atime;
+	struct timespec		i_mtime;
+	struct timespec		i_ctime;
+	unsigned int		i_blkbits;
+	unsigned short          i_bytes;
+	umode_t			i_mode;
+	spinlock_t		i_lock;	/* i_blocks, i_bytes, maybe i_size */
+	struct mutex		i_mutex;
+	struct rw_semaphore	i_alloc_sem;
+	const struct inode_operations	*i_op;
+	const struct file_operations	*i_fop;	/* former ->i_op->default_file_ops */
+	struct super_block	*i_sb;
+	struct file_lock	*i_flock;
+#ifdef CONFIG_QUOTA
+	struct dquot		*i_dquot[MAXQUOTAS];
+#endif
+	struct list_head	i_devices;
+	int			i_cindex;
+
+	__u32			i_generation;
+
+#ifdef CONFIG_DNOTIFY
+	unsigned long		i_dnotify_mask; /* Directory notify events */
+	struct dnotify_struct	*i_dnotify; /* for directory notifications */
+#endif
+
+#ifdef CONFIG_INOTIFY
+	struct list_head	inotify_watches; /* watches on this inode */
+	struct mutex		inotify_mutex;	/* protects the watches list */
+#endif
+
+	unsigned long		i_state;
+	unsigned long		dirtied_when;	/* jiffies of first dirtying */
+
+	unsigned int		i_flags;
+
+#ifdef CONFIG_SECURITY
+	void			*i_security;
+#endif
+	void			*i_private; /* fs or device private pointer */
+};
+
+struct super_block {
+	struct list_head	s_list;		/* Keep this first */
+	dev_t			s_dev;		/* search index; _not_ kdev_t */
+	unsigned long		s_blocksize;
+	unsigned char		s_blocksize_bits;
+	unsigned char		s_dirt;
+	unsigned long long	s_maxbytes;	/* Max file size */
+	struct file_system_type	*s_type;
+	const struct super_operations	*s_op;
+	struct dquot_operations	*dq_op;
+	struct quotactl_ops	*s_qcop;
+	const struct export_operations *s_export_op;
+	unsigned long		s_flags;
+	unsigned long		s_magic;
+	struct dentry		*s_root;
+	struct rw_semaphore	s_umount;
+	struct mutex		s_lock;
+	int			s_count;
+	int			s_syncing;
+	int			s_need_sync_fs;
+#ifdef CONFIG_SECURITY
+	void                    *s_security;
+#endif
+	struct xattr_handler	**s_xattr;
+
+	struct list_head	s_inodes;	/* all inodes */
+	struct list_head	s_dirty;	/* dirty inodes */
+	struct list_head	s_io;		/* parked for writeback */
+	struct list_head	s_more_io;	/* parked for more writeback */
+	struct hlist_head	s_anon;		/* anonymous dentries for (nfs) exporting */
+	struct list_head	s_files;
+	/* s_dentry_lru and s_nr_dentry_unused are protected by dcache_lock */
+	struct list_head	s_dentry_lru;	/* unused dentry lru */
+	int			s_nr_dentry_unused;	/* # of dentry on lru */
+
+	struct block_device	*s_bdev;
+	struct mtd_info		*s_mtd;
+	struct list_head	s_instances;
+
+	int			s_frozen;
+	wait_queue_head_t	s_wait_unfrozen;
+
+	char s_id[32];				/* Informational name */
+
+	void 			*s_fs_info;	/* Filesystem private info */
+
+	/*
+	 * The next field is for VFS *only*. No filesystems have any business
+	 * even looking at it. You had been warned.
+	 */
+	struct mutex s_vfs_rename_mutex;	/* Kludge */
+
+	/* Granularity of c/m/atime in ns.
+	   Cannot be worse than a second */
+	u32		   s_time_gran;
+
+	/*
+	 * Filesystem subtype.  If non-empty the filesystem type field
+	 * in /proc/mounts will be "type.subtype"
+	 */
+	char *s_subtype;
+
+	/*
+	 * Saved mount options for lazy filesystems using
+	 * generic_show_options()
+	 */
+	char *s_options;
+};
+#endif /* _LINUX_FS_H */
-- 
2.1.4


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[PATCH 3/3] fs: import magic.h from Linux kernel

[yegorslists]

From: Yegor Yefremov <yegorslists@googlemail.com>

include/linux/magic.h provides MAGIC numbers for various
file systems.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
---
 fs/cramfs/cramfs.c         |  1 +
 fs/ext4/ext4_common.c      |  3 +-
 fs/ext4/ext_common.h       |  2 --
 include/cramfs/cramfs_fs.h |  1 -
 include/linux/magic.h      | 82 ++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 85 insertions(+), 4 deletions(-)
 create mode 100644 include/linux/magic.h

diff --git a/fs/cramfs/cramfs.c b/fs/cramfs/cramfs.c
index 97f028a..988fa7e 100644
--- a/fs/cramfs/cramfs.c
+++ b/fs/cramfs/cramfs.c
@@ -34,6 +34,7 @@
 
 #include <asm/byteorder.h>
 #include <linux/stat.h>
+#include <linux/magic.h>
 #include <cramfs/cramfs_fs.h>
 
 /* These two macros may change in future, to provide better st_ino
diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index 04b1915..590f54d 100644
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -32,6 +32,7 @@
 #include <malloc.h>
 #include <linux/stat.h>
 #include <linux/time.h>
+#include <linux/magic.h>
 #include <asm/byteorder.h>
 #include <dma.h>
 
@@ -499,7 +500,7 @@ int ext4fs_mount(struct ext_filesystem *fs)
 		goto fail;
 
 	/* Make sure this is an ext2 filesystem. */
-	if (__le16_to_cpu(data->sblock.magic) != EXT2_MAGIC) {
+	if (__le16_to_cpu(data->sblock.magic) != EXT2_SUPER_MAGIC) {
 		ret = -EINVAL;
 		goto fail;
 	}
diff --git a/fs/ext4/ext_common.h b/fs/ext4/ext_common.h
index 517a1c1..704d8e6 100644
--- a/fs/ext4/ext_common.h
+++ b/fs/ext4/ext_common.h
@@ -33,8 +33,6 @@
 #define SECTOR_SIZE		0x200
 #define SECTOR_BITS		9
 
-/* Magic value used to identify an ext2 filesystem.  */
-#define	EXT2_MAGIC			0xEF53
 /* Amount of indirect blocks in an inode.  */
 #define INDIRECT_BLOCKS			12
 /* Maximum lenght of a pathname.  */
diff --git a/include/cramfs/cramfs_fs.h b/include/cramfs/cramfs_fs.h
index 8c53fc7..d2b67c5 100644
--- a/include/cramfs/cramfs_fs.h
+++ b/include/cramfs/cramfs_fs.h
@@ -1,7 +1,6 @@
 #ifndef __CRAMFS_H
 #define __CRAMFS_H
 
-#define CRAMFS_MAGIC		0x28cd3d45	/* some random number */
 #define CRAMFS_SIGNATURE	"Compressed ROMFS"
 
 /*
diff --git a/include/linux/magic.h b/include/linux/magic.h
new file mode 100644
index 0000000..0de181a
--- /dev/null
+++ b/include/linux/magic.h
@@ -0,0 +1,82 @@
+#ifndef __LINUX_MAGIC_H__
+#define __LINUX_MAGIC_H__
+
+#define ADFS_SUPER_MAGIC	0xadf5
+#define AFFS_SUPER_MAGIC	0xadff
+#define AFS_SUPER_MAGIC                0x5346414F
+#define AUTOFS_SUPER_MAGIC	0x0187
+#define CODA_SUPER_MAGIC	0x73757245
+#define CRAMFS_MAGIC		0x28cd3d45	/* some random number */
+#define CRAMFS_MAGIC_WEND	0x453dcd28	/* magic number with the wrong endianess */
+#define DEBUGFS_MAGIC          0x64626720
+#define SECURITYFS_MAGIC	0x73636673
+#define SELINUX_MAGIC		0xf97cff8c
+#define SMACK_MAGIC		0x43415d53	/* "SMAC" */
+#define RAMFS_MAGIC		0x858458f6	/* some random number */
+#define TMPFS_MAGIC		0x01021994
+#define HUGETLBFS_MAGIC 	0x958458f6	/* some random number */
+#define SQUASHFS_MAGIC		0x73717368
+#define ECRYPTFS_SUPER_MAGIC	0xf15f
+#define EFS_SUPER_MAGIC		0x414A53
+#define EXT2_SUPER_MAGIC	0xEF53
+#define EXT3_SUPER_MAGIC	0xEF53
+#define XENFS_SUPER_MAGIC	0xabba1974
+#define EXT4_SUPER_MAGIC	0xEF53
+#define BTRFS_SUPER_MAGIC	0x9123683E
+#define NILFS_SUPER_MAGIC	0x3434
+#define F2FS_SUPER_MAGIC	0xF2F52010
+#define HPFS_SUPER_MAGIC	0xf995e849
+#define ISOFS_SUPER_MAGIC	0x9660
+#define JFFS2_SUPER_MAGIC	0x72b6
+#define PSTOREFS_MAGIC		0x6165676C
+#define EFIVARFS_MAGIC		0xde5e81e4
+#define HOSTFS_SUPER_MAGIC	0x00c0ffee
+#define OVERLAYFS_SUPER_MAGIC	0x794c7630
+
+#define MINIX_SUPER_MAGIC	0x137F		/* minix v1 fs, 14 char names */
+#define MINIX_SUPER_MAGIC2	0x138F		/* minix v1 fs, 30 char names */
+#define MINIX2_SUPER_MAGIC	0x2468		/* minix v2 fs, 14 char names */
+#define MINIX2_SUPER_MAGIC2	0x2478		/* minix v2 fs, 30 char names */
+#define MINIX3_SUPER_MAGIC	0x4d5a		/* minix v3 fs, 60 char names */
+
+#define MSDOS_SUPER_MAGIC	0x4d44		/* MD */
+#define NCP_SUPER_MAGIC		0x564c		/* Guess, what 0x564c is :-) */
+#define NFS_SUPER_MAGIC		0x6969
+#define OPENPROM_SUPER_MAGIC	0x9fa1
+#define QNX4_SUPER_MAGIC	0x002f		/* qnx4 fs detection */
+#define QNX6_SUPER_MAGIC	0x68191122	/* qnx6 fs detection */
+
+#define REISERFS_SUPER_MAGIC	0x52654973	/* used by gcc */
+					/* used by file system utilities that
+	                                   look at the superblock, etc.  */
+#define REISERFS_SUPER_MAGIC_STRING	"ReIsErFs"
+#define REISER2FS_SUPER_MAGIC_STRING	"ReIsEr2Fs"
+#define REISER2FS_JR_SUPER_MAGIC_STRING	"ReIsEr3Fs"
+
+#define SMB_SUPER_MAGIC		0x517B
+#define CGROUP_SUPER_MAGIC	0x27e0eb
+#define CGROUP2_SUPER_MAGIC	0x63677270
+
+
+#define STACK_END_MAGIC		0x57AC6E9D
+
+#define TRACEFS_MAGIC          0x74726163
+
+#define V9FS_MAGIC		0x01021997
+
+#define BDEVFS_MAGIC            0x62646576
+#define BINFMTFS_MAGIC          0x42494e4d
+#define DEVPTS_SUPER_MAGIC	0x1cd1
+#define FUTEXFS_SUPER_MAGIC	0xBAD1DEA
+#define PIPEFS_MAGIC            0x50495045
+#define PROC_SUPER_MAGIC	0x9fa0
+#define SOCKFS_MAGIC		0x534F434B
+#define SYSFS_MAGIC		0x62656572
+#define USBDEVICE_SUPER_MAGIC	0x9fa2
+#define MTD_INODE_FS_MAGIC      0x11307854
+#define ANON_INODE_FS_MAGIC	0x09041934
+#define BTRFS_TEST_MAGIC	0x73727279
+#define NSFS_MAGIC		0x6e736673
+#define BPF_FS_MAGIC		0xcafe4a11
+
+#endif /* __LINUX_MAGIC_H__ */
-- 
2.1.4


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Re: [PATCH 1/3] fs: move struct timespec to include/linux/time.h

[Sascha Hauer]

On Tue, Jan 26, 2016 at 11:38:35AM +0100, yegorslists@googlemail.com wrote:
> From: Yegor Yefremov <yegorslists@googlemail.com>
> 
> Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
> ---
>  fs/ubifs/ubifs.h     | 7 -------
>  include/linux/time.h | 5 +++++
>  2 files changed, 5 insertions(+), 7 deletions(-)

Applied, thanks

Sascha

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