On Mon 08-04-24 11:55:13, Namhyung Kim wrote:
> To pick up the changes from:
>
> 41bcbe59c3b3f ("fs: FS_IOC_GETUUID")
> ae8c511757304 ("fs: add FS_IOC_GETFSSYSFSPATH")
> 73fa7547c70b3 ("vfs: add RWF_NOAPPEND flag for pwritev2")
>
> This should be used to beautify fs syscall arguments and it addresses
> these tools/perf build warnings:
>
> Warning: Kernel ABI header differences:
> diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h
>
> Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
> Cc: Christian Brauner <brauner@xxxxxxxxxx>
> Cc: Jan Kara <jack@xxxxxxx>
> Cc: linux-fsdevel@xxxxxxxxxxxxxxx
> Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Makes sense. Feel free to add:
Reviewed-by: Jan Kara <jack@xxxxxxx>
Honza
> ---
> tools/include/uapi/linux/fs.h | 30 +++++++++++++++++++++++++++++-
> 1 file changed, 29 insertions(+), 1 deletion(-)
>
> diff --git a/tools/include/uapi/linux/fs.h b/tools/include/uapi/linux/fs.h
> index 48ad69f7722e..45e4e64fd664 100644
> --- a/tools/include/uapi/linux/fs.h
> +++ b/tools/include/uapi/linux/fs.h
> @@ -64,6 +64,24 @@ struct fstrim_range {
> __u64 minlen;
> };
>
> +/*
> + * We include a length field because some filesystems (vfat) have an identifier
> + * that we do want to expose as a UUID, but doesn't have the standard length.
> + *
> + * We use a fixed size buffer beacuse this interface will, by fiat, never
> + * support "UUIDs" longer than 16 bytes; we don't want to force all downstream
> + * users to have to deal with that.
> + */
> +struct fsuuid2 {
> + __u8 len;
> + __u8 uuid[16];
> +};
> +
> +struct fs_sysfs_path {
> + __u8 len;
> + __u8 name[128];
> +};
> +
> /* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */
> #define FILE_DEDUPE_RANGE_SAME 0
> #define FILE_DEDUPE_RANGE_DIFFERS 1
> @@ -215,6 +233,13 @@ struct fsxattr {
> #define FS_IOC_FSSETXATTR _IOW('X', 32, struct fsxattr)
> #define FS_IOC_GETFSLABEL _IOR(0x94, 49, char[FSLABEL_MAX])
> #define FS_IOC_SETFSLABEL _IOW(0x94, 50, char[FSLABEL_MAX])
> +/* Returns the external filesystem UUID, the same one blkid returns */
> +#define FS_IOC_GETFSUUID _IOR(0x15, 0, struct fsuuid2)
> +/*
> + * Returns the path component under /sys/fs/ that refers to this filesystem;
> + * also /sys/kernel/debug/ for filesystems with debugfs exports
> + */
> +#define FS_IOC_GETFSSYSFSPATH _IOR(0x15, 1, struct fs_sysfs_path)
>
> /*
> * Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS)
> @@ -301,9 +326,12 @@ typedef int __bitwise __kernel_rwf_t;
> /* per-IO O_APPEND */
> #define RWF_APPEND ((__force __kernel_rwf_t)0x00000010)
>
> +/* per-IO negation of O_APPEND */
> +#define RWF_NOAPPEND ((__force __kernel_rwf_t)0x00000020)
> +
> /* mask of flags supported by the kernel */
> #define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT |\
> - RWF_APPEND)
> + RWF_APPEND | RWF_NOAPPEND)
>
> /* Pagemap ioctl */
> #define PAGEMAP_SCAN _IOWR('f', 16, struct pm_scan_arg)
> --
> 2.44.0.478.gd926399ef9-goog
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
