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Re: [PATCH v2 1/4] linux-user: Add support for FS_IOC_FS<GET|SET>XATTR i
From: |
Laurent Vivier |
Subject: |
Re: [PATCH v2 1/4] linux-user: Add support for FS_IOC_FS<GET|SET>XATTR ioctls |
Date: |
Tue, 18 Feb 2020 21:47:28 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 |
Le 24/01/2020 à 16:47, Aleksandar Markovic a écrit :
> From: Aleksandar Markovic <address@hidden>
>
> Both FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR accept a pointer to
> the structure
>
> struct fsxattr {
> __u32 fsx_xflags; /* xflags field value (get/set) */
> __u32 fsx_extsize; /* extsize field value (get/set)*/
> __u32 fsx_nextents; /* nextents field value (get) */
> __u32 fsx_projid; /* project identifier (get/set) */
> __u32 fsx_cowextsize; /* CoW extsize field value (get/set)*/
> unsigned char fsx_pad[8];
> };
>
> as their third argument.
>
> These ioctls were relatively recently introduced, so the "#ifdef"
> guards are used in this implementation.
>
> Signed-off-by: Aleksandar Markovic <address@hidden>
> ---
> linux-user/ioctls.h | 7 +++++++
> linux-user/syscall_defs.h | 6 ++++++
> 2 files changed, 13 insertions(+)
>
> diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
> index 73dcc76..9fb9d6f 100644
> --- a/linux-user/ioctls.h
> +++ b/linux-user/ioctls.h
> @@ -173,6 +173,13 @@
> IOCTL(FS_IOC32_SETFLAGS, IOC_W, MK_PTR(TYPE_INT))
> IOCTL(FS_IOC32_GETVERSION, IOC_R, MK_PTR(TYPE_INT))
> IOCTL(FS_IOC32_SETVERSION, IOC_W, MK_PTR(TYPE_INT))
> +#ifdef FS_IOC_FSGETXATTR
> + IOCTL(FS_IOC_FSGETXATTR, IOC_W, MK_PTR(MK_STRUCT(STRUCT_fsxattr)))
kernel declares that as IOC_R
> +#endif
> +#ifdef FS_IOC_FSSETXATTR
> + IOCTL(FS_IOC_FSSETXATTR, IOC_W, MK_PTR(MK_STRUCT(STRUCT_fsxattr)))
> +#endif
> +
>
> #ifdef CONFIG_USBFS
> /* USB ioctls */
> diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
> index 9b61ae8..ed5068f 100644
> --- a/linux-user/syscall_defs.h
> +++ b/linux-user/syscall_defs.h
> @@ -966,6 +966,12 @@ struct target_rtc_pll_info {
> #define TARGET_FS_IOC32_SETFLAGS TARGET_IOW('f', 2, int)
> #define TARGET_FS_IOC32_GETVERSION TARGET_IOR('v', 1, int)
> #define TARGET_FS_IOC32_SETVERSION TARGET_IOW('v', 2, int)
> +#ifdef FS_IOC_FSGETXATTR
> +#define TARGET_FS_IOC_FSGETXATTR TARGET_IOR('X', 31, struct fsxattr)
> +#endif
> +#ifdef FS_IOC_FSSETXATTR
> +#define TARGET_FS_IOC_FSSETXATTR TARGET_IOR('X', 32, struct fsxattr)
kernel declares that as _IOW
> +#endif
>
> /* usb ioctls */
> #define TARGET_USBDEVFS_CONTROL TARGET_IOWRU('U', 0)
>
where is defined STRUCT(fsxattr, ...)?
Thanks,
Laurent
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