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Re: [PATCH v2 01/11] 9p: linux: Fix a couple Linux assumptions
From: |
Christian Schoenebeck |
Subject: |
Re: [PATCH v2 01/11] 9p: linux: Fix a couple Linux assumptions |
Date: |
Wed, 24 Nov 2021 13:41:34 +0100 |
On Montag, 22. November 2021 01:49:03 CET Will Cohen wrote:
> From: Keno Fischer <keno@alumni.harvard.edu>
>
> - Guard Linux only headers.
> - Add qemu/statfs.h header to abstract over the which
> headers are needed for struct statfs
> - Define `ENOATTR` only if not only defined
> (it's defined in system headers on Darwin).
>
> Signed-off-by: Keno Fischer <keno@juliacomputing.com>
> [Michael Roitzsch: - Rebase for NixOS]
> Signed-off-by: Michael Roitzsch <reactorcontrol@icloud.com>
> [Will Cohen: - Fix headers for Alpine]
> Signed-off-by: Will Cohen <wwcohen@gmail.com>
> ---
> fsdev/file-op-9p.h | 2 +-
> hw/9pfs/9p-local.c | 2 ++
> hw/9pfs/9p.c | 4 ++++
> include/qemu/statfs.h | 19 +++++++++++++++++++
> include/qemu/xattr.h | 4 +++-
> 5 files changed, 29 insertions(+), 2 deletions(-)
> create mode 100644 include/qemu/statfs.h
>
> diff --git a/fsdev/file-op-9p.h b/fsdev/file-op-9p.h
> index 8fd89f0447..16c1a9d9fe 100644
> --- a/fsdev/file-op-9p.h
> +++ b/fsdev/file-op-9p.h
> @@ -16,7 +16,7 @@
>
> #include <dirent.h>
> #include <utime.h>
> -#include <sys/vfs.h>
> +#include "qemu/statfs.h"
> #include "qemu-fsdev-throttle.h"
> #include "p9array.h"
>
> diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
> index 210d9e7705..1a5e3eed73 100644
> --- a/hw/9pfs/9p-local.c
> +++ b/hw/9pfs/9p-local.c
> @@ -32,10 +32,12 @@
> #include "qemu/error-report.h"
> #include "qemu/option.h"
> #include <libgen.h>
> +#ifdef CONFIG_LINUX
> #include <linux/fs.h>
> #ifdef CONFIG_LINUX_MAGIC_H
> #include <linux/magic.h>
> #endif
> +#endif
> #include <sys/ioctl.h>
>
> #ifndef XFS_SUPER_MAGIC
> diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
> index 15b3f4d385..9c63e14b28 100644
> --- a/hw/9pfs/9p.c
> +++ b/hw/9pfs/9p.c
> @@ -32,7 +32,11 @@
> #include "migration/blocker.h"
> #include "qemu/xxhash.h"
> #include <math.h>
> +#ifdef CONFIG_LINUX
> #include <linux/limits.h>
> +#else
> +#include <limits.h>
> +#endif
>
> int open_fd_hw;
> int total_open_fd;
> diff --git a/include/qemu/statfs.h b/include/qemu/statfs.h
> new file mode 100644
> index 0000000000..dde289f9bb
> --- /dev/null
> +++ b/include/qemu/statfs.h
> @@ -0,0 +1,19 @@
> +/*
> + * Host statfs header abstraction
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2, or any
> + * later version. See the COPYING file in the top-level directory.
> + *
> + */
> +#ifndef QEMU_STATFS_H
> +#define QEMU_STATFS_H
> +
> +#ifdef CONFIG_LINUX
> +# include <sys/vfs.h>
> +#endif
> +#ifdef CONFIG_DARWIN
> +# include <sys/param.h>
> +# include <sys/mount.h>
> +#endif
> +
> +#endif
I wonder whether adding a separate header file statfs.h just for this isn't
overkill, as this is only included once. OTOH there is already xattr.h in
QEMU:
> diff --git a/include/qemu/xattr.h b/include/qemu/xattr.h
> index a83fe8e749..f1d0f7be74 100644
> --- a/include/qemu/xattr.h
> +++ b/include/qemu/xattr.h
> @@ -22,7 +22,9 @@
> #ifdef CONFIG_LIBATTR
> # include <attr/xattr.h>
> #else
> -# define ENOATTR ENODATA
> +# if !defined(ENOATTR)
> +# define ENOATTR ENODATA
> +# endif
> # include <sys/xattr.h>
> #endif
- [PATCH v2 00/11] 9p: Add support for darwin, Will Cohen, 2021/11/21
- [PATCH v2 06/11] 9p: darwin: Compatibility defn for XATTR_SIZE_MAX, Will Cohen, 2021/11/21
- [PATCH v2 07/11] 9p: darwin: *xattr_nofollow implementations, Will Cohen, 2021/11/21
- [PATCH v2 08/11] 9p: darwin: Compatibility for f/l*xattr, Will Cohen, 2021/11/21
- [PATCH v2 10/11] 9p: darwin: Implement compatibility for mknodat, Will Cohen, 2021/11/21