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Message-ID: <aUOOW9z3K5ff-531@infradead.org>
Date: Wed, 17 Dec 2025 21:17:15 -0800
From: Christoph Hellwig <hch@...radead.org>
To: "Darrick J. Wong" <djwong@...nel.org>
Cc: brauner@...nel.org, linux-api@...r.kernel.org,
linux-ext4@...r.kernel.org, jack@...e.cz, linux-xfs@...r.kernel.org,
linux-fsdevel@...r.kernel.org, gabriel@...sman.be,
amir73il@...il.com, linux-man@...r.kernel.org
Subject: Re: [PATCH 1/6] uapi: promote EFSCORRUPTED and EUCLEAN to errno.h
On Wed, Dec 17, 2025 at 06:02:56PM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@...nel.org>
>
> Stop definining these privately and instead move them to the uapi
> errno.h so that they become canonical instead of copy pasta.
Sounds fine:
Reviewed-by: Christoph Hellwig <hch@....de>
Do we need to document these overlay errnos in the man man pages,
though?
>
> Cc: linux-api@...r.kernel.org
> Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
> ---
> arch/alpha/include/uapi/asm/errno.h | 2 ++
> arch/mips/include/uapi/asm/errno.h | 2 ++
> arch/parisc/include/uapi/asm/errno.h | 2 ++
> arch/sparc/include/uapi/asm/errno.h | 2 ++
> fs/erofs/internal.h | 2 --
> fs/ext2/ext2.h | 1 -
> fs/ext4/ext4.h | 3 ---
> fs/f2fs/f2fs.h | 3 ---
> fs/minix/minix.h | 2 --
> fs/udf/udf_sb.h | 2 --
> fs/xfs/xfs_linux.h | 2 --
> include/linux/jbd2.h | 3 ---
> include/uapi/asm-generic/errno.h | 2 ++
> tools/arch/alpha/include/uapi/asm/errno.h | 2 ++
> tools/arch/mips/include/uapi/asm/errno.h | 2 ++
> tools/arch/parisc/include/uapi/asm/errno.h | 2 ++
> tools/arch/sparc/include/uapi/asm/errno.h | 2 ++
> tools/include/uapi/asm-generic/errno.h | 2 ++
> 18 files changed, 20 insertions(+), 18 deletions(-)
>
>
> diff --git a/arch/alpha/include/uapi/asm/errno.h b/arch/alpha/include/uapi/asm/errno.h
> index 3d265f6babaf0a..6791f6508632ee 100644
> --- a/arch/alpha/include/uapi/asm/errno.h
> +++ b/arch/alpha/include/uapi/asm/errno.h
> @@ -55,6 +55,7 @@
> #define ENOSR 82 /* Out of streams resources */
> #define ETIME 83 /* Timer expired */
> #define EBADMSG 84 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define EPROTO 85 /* Protocol error */
> #define ENODATA 86 /* No data available */
> #define ENOSTR 87 /* Device not a stream */
> @@ -96,6 +97,7 @@
> #define EREMCHG 115 /* Remote address changed */
>
> #define EUCLEAN 117 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 118 /* Not a XENIX named type file */
> #define ENAVAIL 119 /* No XENIX semaphores available */
> #define EISNAM 120 /* Is a named type file */
> diff --git a/arch/mips/include/uapi/asm/errno.h b/arch/mips/include/uapi/asm/errno.h
> index 2fb714e2d6d8fc..c01ed91b1ef44b 100644
> --- a/arch/mips/include/uapi/asm/errno.h
> +++ b/arch/mips/include/uapi/asm/errno.h
> @@ -50,6 +50,7 @@
> #define EDOTDOT 73 /* RFS specific error */
> #define EMULTIHOP 74 /* Multihop attempted */
> #define EBADMSG 77 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define ENAMETOOLONG 78 /* File name too long */
> #define EOVERFLOW 79 /* Value too large for defined data type */
> #define ENOTUNIQ 80 /* Name not unique on network */
> @@ -88,6 +89,7 @@
> #define EISCONN 133 /* Transport endpoint is already connected */
> #define ENOTCONN 134 /* Transport endpoint is not connected */
> #define EUCLEAN 135 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 137 /* Not a XENIX named type file */
> #define ENAVAIL 138 /* No XENIX semaphores available */
> #define EISNAM 139 /* Is a named type file */
> diff --git a/arch/parisc/include/uapi/asm/errno.h b/arch/parisc/include/uapi/asm/errno.h
> index 8d94739d75c67c..8cbc07c1903e4c 100644
> --- a/arch/parisc/include/uapi/asm/errno.h
> +++ b/arch/parisc/include/uapi/asm/errno.h
> @@ -36,6 +36,7 @@
>
> #define EDOTDOT 66 /* RFS specific error */
> #define EBADMSG 67 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define EUSERS 68 /* Too many users */
> #define EDQUOT 69 /* Quota exceeded */
> #define ESTALE 70 /* Stale file handle */
> @@ -62,6 +63,7 @@
> #define ERESTART 175 /* Interrupted system call should be restarted */
> #define ESTRPIPE 176 /* Streams pipe error */
> #define EUCLEAN 177 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 178 /* Not a XENIX named type file */
> #define ENAVAIL 179 /* No XENIX semaphores available */
> #define EISNAM 180 /* Is a named type file */
> diff --git a/arch/sparc/include/uapi/asm/errno.h b/arch/sparc/include/uapi/asm/errno.h
> index 81a732b902ee38..4a41e7835fd5b8 100644
> --- a/arch/sparc/include/uapi/asm/errno.h
> +++ b/arch/sparc/include/uapi/asm/errno.h
> @@ -48,6 +48,7 @@
> #define ENOSR 74 /* Out of streams resources */
> #define ENOMSG 75 /* No message of desired type */
> #define EBADMSG 76 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define EIDRM 77 /* Identifier removed */
> #define EDEADLK 78 /* Resource deadlock would occur */
> #define ENOLCK 79 /* No record locks available */
> @@ -91,6 +92,7 @@
> #define ENOTUNIQ 115 /* Name not unique on network */
> #define ERESTART 116 /* Interrupted syscall should be restarted */
> #define EUCLEAN 117 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 118 /* Not a XENIX named type file */
> #define ENAVAIL 119 /* No XENIX semaphores available */
> #define EISNAM 120 /* Is a named type file */
> diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
> index f7f622836198da..d06e99baf5d5ae 100644
> --- a/fs/erofs/internal.h
> +++ b/fs/erofs/internal.h
> @@ -541,6 +541,4 @@ long erofs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
> long erofs_compat_ioctl(struct file *filp, unsigned int cmd,
> unsigned long arg);
>
> -#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> -
> #endif /* __EROFS_INTERNAL_H */
> diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
> index cf97b76e9fd3e9..5e0c6c5fcb6cd6 100644
> --- a/fs/ext2/ext2.h
> +++ b/fs/ext2/ext2.h
> @@ -357,7 +357,6 @@ struct ext2_inode {
> */
> #define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
> #define EXT2_ERROR_FS 0x0002 /* Errors detected */
> -#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
>
> /*
> * Mount flags
> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> index 56112f201cace7..62c091b52bacdf 100644
> --- a/fs/ext4/ext4.h
> +++ b/fs/ext4/ext4.h
> @@ -3938,7 +3938,4 @@ extern int ext4_block_write_begin(handle_t *handle, struct folio *folio,
> get_block_t *get_block);
> #endif /* __KERNEL__ */
>
> -#define EFSBADCRC EBADMSG /* Bad CRC detected */
> -#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> -
> #endif /* _EXT4_H */
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 20edbb99b814a7..9f3aa3c7f12613 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -5004,7 +5004,4 @@ static inline void f2fs_invalidate_internal_cache(struct f2fs_sb_info *sbi,
> f2fs_invalidate_compress_pages_range(sbi, blkaddr, len);
> }
>
> -#define EFSBADCRC EBADMSG /* Bad CRC detected */
> -#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> -
> #endif /* _LINUX_F2FS_H */
> diff --git a/fs/minix/minix.h b/fs/minix/minix.h
> index 2bfaf377f2086c..7e1f652f16d311 100644
> --- a/fs/minix/minix.h
> +++ b/fs/minix/minix.h
> @@ -175,6 +175,4 @@ static inline int minix_test_bit(int nr, const void *vaddr)
> __minix_error_inode((inode), __func__, __LINE__, \
> (fmt), ##__VA_ARGS__)
>
> -#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> -
> #endif /* FS_MINIX_H */
> diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
> index 08ec8756b9487b..8399accc788dea 100644
> --- a/fs/udf/udf_sb.h
> +++ b/fs/udf/udf_sb.h
> @@ -55,8 +55,6 @@
> #define MF_DUPLICATE_MD 0x01
> #define MF_MIRROR_FE_LOADED 0x02
>
> -#define EFSCORRUPTED EUCLEAN
> -
> struct udf_meta_data {
> __u32 s_meta_file_loc;
> __u32 s_mirror_file_loc;
> diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
> index 4dd747bdbccab2..55064228c4d574 100644
> --- a/fs/xfs/xfs_linux.h
> +++ b/fs/xfs/xfs_linux.h
> @@ -121,8 +121,6 @@ typedef __u32 xfs_nlink_t;
>
> #define ENOATTR ENODATA /* Attribute not found */
> #define EWRONGFS EINVAL /* Mount with wrong filesystem type */
> -#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> -#define EFSBADCRC EBADMSG /* Bad CRC detected */
>
> #define __return_address __builtin_return_address(0)
>
> diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
> index f5eaf76198f377..a53a00d36228ce 100644
> --- a/include/linux/jbd2.h
> +++ b/include/linux/jbd2.h
> @@ -1815,7 +1815,4 @@ static inline int jbd2_handle_buffer_credits(handle_t *handle)
>
> #endif /* __KERNEL__ */
>
> -#define EFSBADCRC EBADMSG /* Bad CRC detected */
> -#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> -
> #endif /* _LINUX_JBD2_H */
> diff --git a/include/uapi/asm-generic/errno.h b/include/uapi/asm-generic/errno.h
> index cf9c51ac49f97e..92e7ae493ee315 100644
> --- a/include/uapi/asm-generic/errno.h
> +++ b/include/uapi/asm-generic/errno.h
> @@ -55,6 +55,7 @@
> #define EMULTIHOP 72 /* Multihop attempted */
> #define EDOTDOT 73 /* RFS specific error */
> #define EBADMSG 74 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define EOVERFLOW 75 /* Value too large for defined data type */
> #define ENOTUNIQ 76 /* Name not unique on network */
> #define EBADFD 77 /* File descriptor in bad state */
> @@ -98,6 +99,7 @@
> #define EINPROGRESS 115 /* Operation now in progress */
> #define ESTALE 116 /* Stale file handle */
> #define EUCLEAN 117 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 118 /* Not a XENIX named type file */
> #define ENAVAIL 119 /* No XENIX semaphores available */
> #define EISNAM 120 /* Is a named type file */
> diff --git a/tools/arch/alpha/include/uapi/asm/errno.h b/tools/arch/alpha/include/uapi/asm/errno.h
> index 3d265f6babaf0a..6791f6508632ee 100644
> --- a/tools/arch/alpha/include/uapi/asm/errno.h
> +++ b/tools/arch/alpha/include/uapi/asm/errno.h
> @@ -55,6 +55,7 @@
> #define ENOSR 82 /* Out of streams resources */
> #define ETIME 83 /* Timer expired */
> #define EBADMSG 84 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define EPROTO 85 /* Protocol error */
> #define ENODATA 86 /* No data available */
> #define ENOSTR 87 /* Device not a stream */
> @@ -96,6 +97,7 @@
> #define EREMCHG 115 /* Remote address changed */
>
> #define EUCLEAN 117 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 118 /* Not a XENIX named type file */
> #define ENAVAIL 119 /* No XENIX semaphores available */
> #define EISNAM 120 /* Is a named type file */
> diff --git a/tools/arch/mips/include/uapi/asm/errno.h b/tools/arch/mips/include/uapi/asm/errno.h
> index 2fb714e2d6d8fc..c01ed91b1ef44b 100644
> --- a/tools/arch/mips/include/uapi/asm/errno.h
> +++ b/tools/arch/mips/include/uapi/asm/errno.h
> @@ -50,6 +50,7 @@
> #define EDOTDOT 73 /* RFS specific error */
> #define EMULTIHOP 74 /* Multihop attempted */
> #define EBADMSG 77 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define ENAMETOOLONG 78 /* File name too long */
> #define EOVERFLOW 79 /* Value too large for defined data type */
> #define ENOTUNIQ 80 /* Name not unique on network */
> @@ -88,6 +89,7 @@
> #define EISCONN 133 /* Transport endpoint is already connected */
> #define ENOTCONN 134 /* Transport endpoint is not connected */
> #define EUCLEAN 135 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 137 /* Not a XENIX named type file */
> #define ENAVAIL 138 /* No XENIX semaphores available */
> #define EISNAM 139 /* Is a named type file */
> diff --git a/tools/arch/parisc/include/uapi/asm/errno.h b/tools/arch/parisc/include/uapi/asm/errno.h
> index 8d94739d75c67c..8cbc07c1903e4c 100644
> --- a/tools/arch/parisc/include/uapi/asm/errno.h
> +++ b/tools/arch/parisc/include/uapi/asm/errno.h
> @@ -36,6 +36,7 @@
>
> #define EDOTDOT 66 /* RFS specific error */
> #define EBADMSG 67 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define EUSERS 68 /* Too many users */
> #define EDQUOT 69 /* Quota exceeded */
> #define ESTALE 70 /* Stale file handle */
> @@ -62,6 +63,7 @@
> #define ERESTART 175 /* Interrupted system call should be restarted */
> #define ESTRPIPE 176 /* Streams pipe error */
> #define EUCLEAN 177 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 178 /* Not a XENIX named type file */
> #define ENAVAIL 179 /* No XENIX semaphores available */
> #define EISNAM 180 /* Is a named type file */
> diff --git a/tools/arch/sparc/include/uapi/asm/errno.h b/tools/arch/sparc/include/uapi/asm/errno.h
> index 81a732b902ee38..4a41e7835fd5b8 100644
> --- a/tools/arch/sparc/include/uapi/asm/errno.h
> +++ b/tools/arch/sparc/include/uapi/asm/errno.h
> @@ -48,6 +48,7 @@
> #define ENOSR 74 /* Out of streams resources */
> #define ENOMSG 75 /* No message of desired type */
> #define EBADMSG 76 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define EIDRM 77 /* Identifier removed */
> #define EDEADLK 78 /* Resource deadlock would occur */
> #define ENOLCK 79 /* No record locks available */
> @@ -91,6 +92,7 @@
> #define ENOTUNIQ 115 /* Name not unique on network */
> #define ERESTART 116 /* Interrupted syscall should be restarted */
> #define EUCLEAN 117 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 118 /* Not a XENIX named type file */
> #define ENAVAIL 119 /* No XENIX semaphores available */
> #define EISNAM 120 /* Is a named type file */
> diff --git a/tools/include/uapi/asm-generic/errno.h b/tools/include/uapi/asm-generic/errno.h
> index cf9c51ac49f97e..92e7ae493ee315 100644
> --- a/tools/include/uapi/asm-generic/errno.h
> +++ b/tools/include/uapi/asm-generic/errno.h
> @@ -55,6 +55,7 @@
> #define EMULTIHOP 72 /* Multihop attempted */
> #define EDOTDOT 73 /* RFS specific error */
> #define EBADMSG 74 /* Not a data message */
> +#define EFSBADCRC EBADMSG /* Bad CRC detected */
> #define EOVERFLOW 75 /* Value too large for defined data type */
> #define ENOTUNIQ 76 /* Name not unique on network */
> #define EBADFD 77 /* File descriptor in bad state */
> @@ -98,6 +99,7 @@
> #define EINPROGRESS 115 /* Operation now in progress */
> #define ESTALE 116 /* Stale file handle */
> #define EUCLEAN 117 /* Structure needs cleaning */
> +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
> #define ENOTNAM 118 /* Not a XENIX named type file */
> #define ENAVAIL 119 /* No XENIX semaphores available */
> #define EISNAM 120 /* Is a named type file */
>
>
---end quoted text---
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