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-rw-r--r--nixpkgs/pkgs/applications/virtualization/qemu/9p-ignore-noatime.patch44
-rw-r--r--nixpkgs/pkgs/applications/virtualization/qemu/allow-virtfs-on-darwin.patch77
-rw-r--r--nixpkgs/pkgs/applications/virtualization/qemu/default.nix59
-rw-r--r--nixpkgs/pkgs/applications/virtualization/qemu/provide-fallback-for-utimensat.patch190
-rw-r--r--nixpkgs/pkgs/applications/virtualization/qemu/rename-9p-util.patch54
5 files changed, 376 insertions, 48 deletions
diff --git a/nixpkgs/pkgs/applications/virtualization/qemu/9p-ignore-noatime.patch b/nixpkgs/pkgs/applications/virtualization/qemu/9p-ignore-noatime.patch
deleted file mode 100644
index 03e47a57863c..000000000000
--- a/nixpkgs/pkgs/applications/virtualization/qemu/9p-ignore-noatime.patch
+++ /dev/null
@@ -1,44 +0,0 @@
-commit cdc3e7eeafa9f683214d2c15d52ef384c3de6611
-Author: aszlig <aszlig@nix.build>
-Date:   Mon Mar 18 13:21:01 2019 +0100
-
-    9pfs: Ignore O_NOATIME open flag
-    
-    Since Linux 4.19, overlayfs uses the O_NOATIME flag on its lowerdir,
-    which in turn causes errors when the Nix store is mounted in the guest
-    because the file owner of the store paths typically don't match the
-    owner of the QEMU process.
-    
-    After submitting a patch to the overlayfs mailing list[1], it turns out
-    that my patch was incomplete[2] and needs a bit more rework.
-    
-    So instead of using an incomplete kernel patch in nixpkgs, which affects
-    *all* users of overlayfs, not just NixOS VM tests, I decided that for
-    now it's better to patch QEMU instead.
-    
-    The change here really only ignores the O_NOATIME flag so that the
-    behaviour is similar to what NFS does. From open(2):
-    
-      This flag may not be effective on all filesystems. One example is NFS,
-      where the server maintains the access time.
-    
-    This change is therefore only temporary until the final fix lands in the
-    stable kernel releases.
-    
-    [1]: https://www.spinics.net/lists/linux-unionfs/msg06755.html
-    [2]: https://www.spinics.net/lists/linux-unionfs/msg06756.html
-    
-    Signed-off-by: aszlig <aszlig@nix.build>
-
-diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
-index 55821343e5..0b8425fe18 100644
---- a/hw/9pfs/9p.c
-+++ b/hw/9pfs/9p.c
-@@ -127,7 +127,6 @@ static int dotl_to_open_flags(int flags)
-         { P9_DOTL_LARGEFILE, O_LARGEFILE },
-         { P9_DOTL_DIRECTORY, O_DIRECTORY },
-         { P9_DOTL_NOFOLLOW, O_NOFOLLOW },
--        { P9_DOTL_NOATIME, O_NOATIME },
-         { P9_DOTL_SYNC, O_SYNC },
-     };
- 
diff --git a/nixpkgs/pkgs/applications/virtualization/qemu/allow-virtfs-on-darwin.patch b/nixpkgs/pkgs/applications/virtualization/qemu/allow-virtfs-on-darwin.patch
new file mode 100644
index 000000000000..a498d309c233
--- /dev/null
+++ b/nixpkgs/pkgs/applications/virtualization/qemu/allow-virtfs-on-darwin.patch
@@ -0,0 +1,77 @@
+From 4ca09b7cd1d42eb6b1587fed74cd4d684e31bfbe Mon Sep 17 00:00:00 2001
+From: Keno Fischer <keno@juliacomputing.com>
+Date: Sun, 27 Feb 2022 17:35:22 -0500
+Subject: [PATCH] 9p: darwin: meson: Allow VirtFS on Darwin
+
+To allow VirtFS on darwin, we need to check that pthread_fchdir_np is
+available, which has only been available since macOS 10.12.
+
+Additionally, virtfs_proxy_helper is disabled on Darwin. This patch
+series does not currently provide an implementation of the proxy-helper,
+but this functionality could be implemented later on.
+
+Signed-off-by: Keno Fischer <keno@juliacomputing.com>
+[Michael Roitzsch: - Rebase for NixOS]
+Signed-off-by: Michael Roitzsch <reactorcontrol@icloud.com>
+[Will Cohen: - Rebase to master]
+Signed-off-by: Will Cohen <wwcohen@gmail.com>
+Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
+[Will Cohen: - Add check for pthread_fchdir_np to virtfs
+             - Add comments to patch commit
+             - Note that virtfs_proxy_helper does not work
+               on macOS
+             - Fully adjust meson virtfs error note to specify
+               macOS
+             - Rebase to master]
+Signed-off-by: Will Cohen <wwcohen@gmail.com>
+Message-Id: <20220227223522.91937-12-wwcohen@gmail.com>
+Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
+Acked-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
+---
+ fsdev/meson.build |  1 +
+ meson.build       | 17 +++++++++++------
+ 2 files changed, 12 insertions(+), 6 deletions(-)
+
+diff --git a/fsdev/meson.build b/fsdev/meson.build
+index adf57cc43e..b632b66348 100644
+--- a/fsdev/meson.build
++++ b/fsdev/meson.build
+@@ -7,6 +7,7 @@ fsdev_ss.add(when: ['CONFIG_FSDEV_9P'], if_true: files(
+   'qemu-fsdev.c',
+ ), if_false: files('qemu-fsdev-dummy.c'))
+ softmmu_ss.add_all(when: 'CONFIG_LINUX', if_true: fsdev_ss)
++softmmu_ss.add_all(when: 'CONFIG_DARWIN', if_true: fsdev_ss)
+ 
+ if have_virtfs_proxy_helper
+   executable('virtfs-proxy-helper',
+diff --git a/meson.build b/meson.build
+index 2265fa409a..6d73c02903 100644
+--- a/meson.build
++++ b/meson.build
+@@ -1383,12 +1383,17 @@ endif
+ have_host_block_device = (targetos != 'darwin' or
+     cc.has_header('IOKit/storage/IOMedia.h'))
+ 
+-have_virtfs = (targetos == 'linux' and
+-    have_system and
+-    libattr.found() and
+-    libcap_ng.found())
+-
+-have_virtfs_proxy_helper = have_virtfs and have_tools
++have_virtfs = get_option('virtfs') \
++    .require(targetos == 'linux' or targetos == 'darwin',
++             error_message: 'virtio-9p (virtfs) requires Linux or macOS') \
++    .require(targetos == 'linux' or cc.has_function('pthread_fchdir_np'),
++             error_message: 'virtio-9p (virtfs) on macOS requires the presence of pthread_fchdir_np') \
++    .require(targetos == 'darwin' or (libattr.found() and libcap_ng.found()),
++             error_message: 'virtio-9p (virtfs) on Linux requires libcap-ng-devel and libattr-devel') \
++    .disable_auto_if(not have_tools and not have_system) \
++    .allowed()
++
++have_virtfs_proxy_helper = targetos != 'darwin' and have_virtfs and have_tools
+ 
+ if get_option('virtfs').enabled()
+   if not have_virtfs
+-- 
+2.35.1
+
diff --git a/nixpkgs/pkgs/applications/virtualization/qemu/default.nix b/nixpkgs/pkgs/applications/virtualization/qemu/default.nix
index ee923f4e0cd0..2b183dd48d02 100644
--- a/nixpkgs/pkgs/applications/virtualization/qemu/default.nix
+++ b/nixpkgs/pkgs/applications/virtualization/qemu/default.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, fetchurl, fetchpatch, python3, python3Packages, zlib, pkg-config, glib, buildPackages
 , perl, pixman, vde2, alsa-lib, texinfo, flex
 , bison, lzo, snappy, libaio, libtasn1, gnutls, nettle, curl, ninja, meson, sigtool
-, makeWrapper, runtimeShell
+, makeWrapper, runtimeShell, removeReferencesTo
 , attr, libcap, libcap_ng, socat
 , CoreServices, Cocoa, Hypervisor, rez, setfile
 , numaSupport ? stdenv.isLinux && !stdenv.isAarch32, numactl
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
 
   depsBuildBuild = [ buildPackages.stdenv.cc ];
 
-  nativeBuildInputs = [ makeWrapper pkg-config flex bison meson ninja perl python3 python3Packages.sphinx python3Packages.sphinx_rtd_theme ]
+  nativeBuildInputs = [ makeWrapper removeReferencesTo pkg-config flex bison meson ninja perl python3 python3Packages.sphinx python3Packages.sphinx_rtd_theme ]
     ++ lib.optionals gtkSupport [ wrapGAppsHook ]
     ++ lib.optionals stdenv.isDarwin [ sigtool ];
 
@@ -88,14 +88,62 @@ stdenv.mkDerivation rec {
 
   patches = [
     ./fix-qemu-ga.patch
-    ./9p-ignore-noatime.patch
     # Cocoa clipboard support only works on macOS 10.14+
     (fetchpatch {
       url = "https://gitlab.com/qemu-project/qemu/-/commit/7e3e20d89129614f4a7b2451fe321cc6ccca3b76.diff";
       sha256 = "09xz06g57wxbacic617pq9c0qb7nly42gif0raplldn5lw964xl2";
       revert = true;
     })
-  ] ++ lib.optional nixosTestRunner ./force-uid0-on-9p.patch;
+    # 9p-darwin for 7.0 backported to 6.2.0
+    #
+    # Can generally be removed when updating derivation to 7.0. Nine of the
+    # patches can be drawn directly from QEMU upstream, but the second commit
+    # and the eleventh commit had to be modified when rebasing back to 6.2.0.
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/e0bd743bb2dd4985791d4de880446bdbb4e04fed.patch";
+      sha256 = "sha256-c6QYL3zig47fJwm6rqkqGp3E1PakVTaihvXDRebbBlQ=";
+    })
+    ./rename-9p-util.patch
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/f41db099c71151291c269bf48ad006de9cbd9ca6.patch";
+      sha256 = "sha256-70/rrhZw+02JJbJ3CoW8B1GbdM4Lwb2WkUdwstYAoIQ=";
+    })
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/6b3b279bd670c6a2fa23c9049820c814f0e2c846.patch";
+      sha256 = "sha256-7WqklSvLirEuxTXTIMQDQhWpXnwMseJ1RumT+faq/Y8=";
+    })
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/67a71e3b71a2834d028031a92e76eb9444e423c6.patch";
+      sha256 = "sha256-COFm/SwfJSoSl9YDpL6ceAE8CcE4mGhsGxw1HMuL++o=";
+    })
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/38d7fd68b0c8775b5253ab84367419621aa032e6.patch";
+      sha256 = "sha256-iwGIzq9FWW6zpbDg/IKrp5OZpK9cgQqTRWWq8WBIHRQ=";
+    })
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/57b3910bc3513ab515296692daafd1c546f3c115.patch";
+      sha256 = "sha256-ybl9+umZAcQKHYL7NkGJQC0W7bccTagA9KQiFaR2LYA=";
+    })
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/b5989326f558faedd2511f29459112cced2ca8f5.patch";
+      sha256 = "sha256-s+O9eCgj2Ev+INjL9LY9MJBdISIdZLslI3lue2DICGM=";
+    })
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/029ed1bd9defa33a80bb40cdcd003699299af8db.patch";
+      sha256 = "sha256-mGqcRWcEibDJdhTRrN7ZWrMuCfUWW8vWiFj7sb2/RYo=";
+    })
+    (fetchpatch {
+      url = "https://gitlab.com/qemu-project/qemu/-/commit/d3671fd972cd185a6923433aa4802f54d8b62112.patch";
+      sha256 = "sha256-GUh5o7mbFTm/dm6CqcGdoMlC+YrV8RlcEwu/mxrfTzo=";
+    })
+    ./allow-virtfs-on-darwin.patch
+    # QEMU upstream does not demand compatibility to pre-10.13, so 9p-darwin
+    # support on nix requires utimensat fallback. The patch adding this fallback
+    # set was removed during the process of upstreaming this functionality, and
+    # will still be needed in nix until the macOS SDK reaches 10.13+.
+    ./provide-fallback-for-utimensat.patch
+  ]
+    ++ lib.optional nixosTestRunner ./force-uid0-on-9p.patch;
 
   postPatch = ''
     # Otherwise tries to ensure /var/run exists.
@@ -175,6 +223,7 @@ stdenv.mkDerivation rec {
     # copy qemu-ga (guest agent) to separate output
     mkdir -p $ga/bin
     cp $out/bin/qemu-ga $ga/bin/
+    remove-references-to -t $out $ga/bin/qemu-ga
   '' + lib.optionalString gtkSupport ''
     # wrap GTK Binaries
     for f in $out/bin/qemu-system-*; do
@@ -219,6 +268,7 @@ stdenv.mkDerivation rec {
 
   # Add a ‘qemu-kvm’ wrapper for compatibility/convenience.
   postInstall = ''
+    ln -s $out/libexec/virtiofsd $out/bin
     ln -s $out/bin/qemu-system-${stdenv.hostPlatform.qemuArch} $out/bin/qemu-kvm
   '';
 
@@ -239,5 +289,6 @@ stdenv.mkDerivation rec {
     mainProgram = "qemu-kvm";
     maintainers = with maintainers; [ eelco qyliss ];
     platforms = platforms.unix;
+    priority = 10; # Prefer virtiofsd from the virtiofsd package.
   };
 }
diff --git a/nixpkgs/pkgs/applications/virtualization/qemu/provide-fallback-for-utimensat.patch b/nixpkgs/pkgs/applications/virtualization/qemu/provide-fallback-for-utimensat.patch
new file mode 100644
index 000000000000..dbc4e2b9af51
--- /dev/null
+++ b/nixpkgs/pkgs/applications/virtualization/qemu/provide-fallback-for-utimensat.patch
@@ -0,0 +1,190 @@
+From 70328c307001f4bb75d30d93c5bba3c3cd790c88 Mon Sep 17 00:00:00 2001
+From: Keno Fischer <keno@juliacomputing.com>
+Date: Sat, 16 Jun 2018 20:56:54 -0400
+Subject: [PATCH] 9p: darwin: Provide fallback impl for utimensat
+
+This function is new in Mac OS 10.13. Provide a fallback implementation
+when building against older SDKs. The complication in the definition comes
+having to separately handle the used SDK version and the target OS version.
+
+- If the SDK version is too low (__MAC_10_13 not defined), utimensat is not
+  defined in the header, so we must not try to use it (doing so would error).
+- Otherwise, if the targetted OS version is at least 10.13, we know this
+  function is available, so we can unconditionally call it.
+- Lastly, we check for the availability of the __builtin_available macro to
+  potentially insert a dynamic check for this OS version. However, __builtin_available
+  is only available with sufficiently recent versions of clang and while all
+  Apple clang versions that ship with Xcode versions that support the 10.13
+  SDK support with builtin, we want to allow building with compilers other
+  than Apple clang that may not support this builtin.
+
+Signed-off-by: Keno Fischer <keno@juliacomputing.com>
+Signed-off-by: Michael Roitzsch <reactorcontrol@icloud.com>
+Signed-off-by: Will Cohen <wwcohen@gmail.com>
+---
+ hw/9pfs/9p-local.c       |  2 +-
+ hw/9pfs/9p-util-darwin.c | 96 ++++++++++++++++++++++++++++++++++++++++
+ hw/9pfs/9p-util-linux.c  |  6 +++
+ hw/9pfs/9p-util.h        |  8 ++++
+ 4 files changed, 111 insertions(+), 1 deletion(-)
+
+diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
+index d42ce6d8b8..b2c1fa42e1 100644
+--- a/hw/9pfs/9p-local.c
++++ b/hw/9pfs/9p-local.c
+@@ -1085,7 +1085,7 @@ static int local_utimensat(FsContext *s, V9fsPath *fs_path,
+         goto out;
+     }
+ 
+-    ret = utimensat(dirfd, name, buf, AT_SYMLINK_NOFOLLOW);
++    ret = utimensat_nofollow(dirfd, name, buf);
+     close_preserve_errno(dirfd);
+ out:
+     g_free(dirpath);
+diff --git a/hw/9pfs/9p-util-darwin.c b/hw/9pfs/9p-util-darwin.c
+index bec0253474..2fc0475292 100644
+--- a/hw/9pfs/9p-util-darwin.c
++++ b/hw/9pfs/9p-util-darwin.c
+@@ -95,3 +95,99 @@ int qemu_mknodat(int dirfd, const char *filename, mode_t mode, dev_t dev)
+ }
+ 
+ #endif
++
++#ifndef __has_builtin
++#define __has_builtin(x) 0
++#endif
++
++static int update_times_from_stat(int fd, struct timespec times[2],
++                                  int update0, int update1)
++{
++    struct stat buf;
++    int ret = fstat(fd, &buf);
++    if (ret == -1) {
++        return ret;
++    }
++    if (update0) {
++        times[0] = buf.st_atimespec;
++    }
++    if (update1) {
++        times[1] = buf.st_mtimespec;
++    }
++    return 0;
++}
++
++int utimensat_nofollow(int dirfd, const char *filename,
++                       const struct timespec times_in[2])
++{
++    int ret, fd;
++    int special0, special1;
++    struct timeval futimes_buf[2];
++    struct timespec times[2];
++    memcpy(times, times_in, 2 * sizeof(struct timespec));
++
++/* Check whether we have an SDK version that defines utimensat */
++#if defined(__MAC_10_13)
++# if __MAC_OS_X_VERSION_MIN_REQUIRED >= __MAC_10_13
++#  define UTIMENSAT_AVAILABLE 1
++# elif __has_builtin(__builtin_available)
++#  define UTIMENSAT_AVAILABLE __builtin_available(macos 10.13, *)
++# else
++#  define UTIMENSAT_AVAILABLE 0
++# endif
++    if (UTIMENSAT_AVAILABLE) {
++        return utimensat(dirfd, filename, times, AT_SYMLINK_NOFOLLOW);
++    }
++#endif
++
++    /* utimensat not available. Use futimes. */
++    fd = openat_file(dirfd, filename, O_PATH_9P_UTIL | O_NOFOLLOW, 0);
++    if (fd == -1) {
++        return -1;
++    }
++
++    special0 = times[0].tv_nsec == UTIME_OMIT;
++    special1 = times[1].tv_nsec == UTIME_OMIT;
++    if (special0 || special1) {
++        /* If both are set, nothing to do */
++        if (special0 && special1) {
++            ret = 0;
++            goto done;
++        }
++
++        ret = update_times_from_stat(fd, times, special0, special1);
++        if (ret < 0) {
++            goto done;
++        }
++    }
++
++    special0 = times[0].tv_nsec == UTIME_NOW;
++    special1 = times[1].tv_nsec == UTIME_NOW;
++    if (special0 || special1) {
++        ret = futimes(fd, NULL);
++        if (ret < 0) {
++            goto done;
++        }
++
++        /* If both are set, we are done */
++        if (special0 && special1) {
++            ret = 0;
++            goto done;
++        }
++
++        ret = update_times_from_stat(fd, times, special0, special1);
++        if (ret < 0) {
++            goto done;
++        }
++    }
++
++    futimes_buf[0].tv_sec = times[0].tv_sec;
++    futimes_buf[0].tv_usec = times[0].tv_nsec / 1000;
++    futimes_buf[1].tv_sec = times[1].tv_sec;
++    futimes_buf[1].tv_usec = times[1].tv_nsec / 1000;
++    ret = futimes(fd, futimes_buf);
++
++done:
++    close_preserve_errno(fd);
++    return ret;
++}
+diff --git a/hw/9pfs/9p-util-linux.c b/hw/9pfs/9p-util-linux.c
+index db451b0784..320697f347 100644
+--- a/hw/9pfs/9p-util-linux.c
++++ b/hw/9pfs/9p-util-linux.c
+@@ -68,3 +68,9 @@ int qemu_mknodat(int dirfd, const char *filename, mode_t mode, dev_t dev)
+ {
+     return mknodat(dirfd, filename, mode, dev);
+ }
++
++int utimensat_nofollow(int dirfd, const char *filename,
++                       const struct timespec times[2])
++{
++    return utimensat(dirfd, filename, times, AT_SYMLINK_NOFOLLOW);
++}
+diff --git a/hw/9pfs/9p-util.h b/hw/9pfs/9p-util.h
+index 1f74d37558..a4b002d1b5 100644
+--- a/hw/9pfs/9p-util.h
++++ b/hw/9pfs/9p-util.h
+@@ -36,6 +36,12 @@ static inline int qemu_lsetxattr(const char *path, const char *name,
+ #define qemu_lsetxattr lsetxattr
+ #endif
+ 
++/* Compatibility with old SDK Versions for Darwin */
++#if defined(CONFIG_DARWIN) && !defined(UTIME_NOW)
++#define UTIME_NOW -1
++#define UTIME_OMIT -2
++#endif
++
+ static inline void close_preserve_errno(int fd)
+ {
+     int serrno = errno;
+@@ -96,6 +102,8 @@ ssize_t flistxattrat_nofollow(int dirfd, const char *filename,
+                               char *list, size_t size);
+ ssize_t fremovexattrat_nofollow(int dirfd, const char *filename,
+                                 const char *name);
++int utimensat_nofollow(int dirfd, const char *filename,
++                       const struct timespec times[2]);
+ 
+ /**
+  * Darwin has d_seekoff, which appears to function similarly to d_off.
+-- 
+2.35.1
+
diff --git a/nixpkgs/pkgs/applications/virtualization/qemu/rename-9p-util.patch b/nixpkgs/pkgs/applications/virtualization/qemu/rename-9p-util.patch
new file mode 100644
index 000000000000..fe3e2d7b4b8f
--- /dev/null
+++ b/nixpkgs/pkgs/applications/virtualization/qemu/rename-9p-util.patch
@@ -0,0 +1,54 @@
+From 011b121d7f84c8974f03a81582cf1107249245bb Mon Sep 17 00:00:00 2001
+From: Keno Fischer <keno@juliacomputing.com>
+Date: Sun, 27 Feb 2022 17:35:13 -0500
+Subject: [PATCH] 9p: Rename 9p-util -> 9p-util-linux
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The current file only has the Linux versions of these functions.
+Rename the file accordingly and update the Makefile to only build
+it on Linux. A Darwin version of these will follow later in the
+series.
+
+Signed-off-by: Keno Fischer <keno@juliacomputing.com>
+[Michael Roitzsch: - Rebase for NixOS]
+Signed-off-by: Michael Roitzsch <reactorcontrol@icloud.com>
+Signed-off-by: Will Cohen <wwcohen@gmail.com>
+Reviewed-by: Greg Kurz <groug@kaod.org>
+Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
+Message-Id: <20220227223522.91937-3-wwcohen@gmail.com>
+Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
+---
+ hw/9pfs/{9p-util.c => 9p-util-linux.c} | 0
+ hw/9pfs/meson.build                    | 2 +-
+ 2 files changed, 1 insertion(+), 1 deletion(-)
+ rename hw/9pfs/{9p-util.c => 9p-util-linux.c} (100%)
+
+diff --git a/hw/9pfs/9p-util.c b/hw/9pfs/9p-util-linux.c
+similarity index 100%
+rename from hw/9pfs/9p-util.c
+rename to hw/9pfs/9p-util-linux.c
+diff --git a/hw/9pfs/meson.build b/hw/9pfs/meson.build
+index 99be5d9119..1b28e70040 100644
+--- a/hw/9pfs/meson.build
++++ b/hw/9pfs/meson.build
+@@ -4,7 +4,6 @@ fs_ss.add(files(
+   '9p-posix-acl.c',
+   '9p-proxy.c',
+   '9p-synth.c',
+-  '9p-util.c',
+   '9p-xattr-user.c',
+   '9p-xattr.c',
+   '9p.c',
+@@ -14,6 +13,7 @@ fs_ss.add(files(
+   'coth.c',
+   'coxattr.c',
+ ))
++fs_ss.add(when: 'CONFIG_LINUX', if_true: files('9p-util-linux.c'))
+ fs_ss.add(when: 'CONFIG_XEN', if_true: files('xen-9p-backend.c'))
+ softmmu_ss.add_all(when: 'CONFIG_FSDEV_9P', if_true: fs_ss)
+ 
+-- 
+2.35.1
+