[PULL 0/5] 9p queue 2022-12-23

[PULL 0/5] 9p queue 2022-12-23

[Christian Schoenebeck]

The following changes since commit 222059a0fccf4af3be776fe35a5ea2d6a68f9a0b:

  Merge tag 'pull-ppc-20221221' of https://gitlab.com/danielhb/qemu into staging (2022-12-21 18:08:09 +0000)

are available in the Git repository at:

  https://github.com/cschoenebeck/qemu.git tags/pull-9p-20221223

for you to fetch changes up to 6ca60cd7a388a776d72739e5a404e65c19460511:

  hw/9pfs: Replace the direct call to xxxat() APIs with a wrapper (2022-12-23 11:48:13 +0100)

----------------------------------------------------------------
9pfs: Windows host prep, cleanup

* Next preparatory patches for upcoming Windows host support.

* Cleanup patches.

----------------------------------------------------------------
Bin Meng (3):
      qemu/xattr.h: Exclude <sys/xattr.h> for Windows
      hw/9pfs: Drop unnecessary *xattr wrapper API declarations
      hw/9pfs: Replace the direct call to xxxat() APIs with a wrapper

Christian Schoenebeck (1):
      MAINTAINERS: Add 9p test client to section "virtio-9p"

Greg Kurz (1):
      9pfs: Fix some return statements in the synth backend

 MAINTAINERS          |  1 +
 hw/9pfs/9p-local.c   | 32 ++++++++++++++++----------------
 hw/9pfs/9p-synth.c   | 12 ++++++------
 hw/9pfs/9p-util.h    | 26 +++++++++++---------------
 include/qemu/xattr.h |  4 +++-
 5 files changed, 37 insertions(+), 38 deletions(-)

[PULL 2/5] MAINTAINERS: Add 9p test client to section "virtio-9p"

[Christian Schoenebeck]

The 9p test cases use a dedicated, lite-weight 9p client implementation
(using virtio transport) under tests/qtest/libqos/ to communicate with
QEMU's 9p server.

It's already there for a long time. Let's officially assign it to 9p
maintainers.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Message-Id: <E1ozhlV-0007BU-0g@lizzy.crudebyte.com>
---
 MAINTAINERS | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index b270eb8e5b..b0091d2ad8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2053,6 +2053,7 @@ X: hw/9pfs/xen-9p*
 F: fsdev/
 F: docs/tools/virtfs-proxy-helper.rst
 F: tests/qtest/virtio-9p-test.c
+F: tests/qtest/libqos/virtio-9p*
 T: git https://gitlab.com/gkurz/qemu.git 9p-next
 T: git https://github.com/cschoenebeck/qemu.git 9p.next
 
-- 
2.30.2

[PULL 4/5] hw/9pfs: Drop unnecessary *xattr wrapper API declarations

[Christian Schoenebeck]

From: Bin Meng <bin.meng@windriver.com>

These are not used anywhere in the source tree. Drop them.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20221219102022.2167736-3-bin.meng@windriver.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---
 hw/9pfs/9p-util.h | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/hw/9pfs/9p-util.h b/hw/9pfs/9p-util.h
index c3526144c9..ccfc8b1cb3 100644
--- a/hw/9pfs/9p-util.h
+++ b/hw/9pfs/9p-util.h
@@ -90,19 +90,8 @@ static inline int errno_to_dotl(int err) {
 
 #ifdef CONFIG_DARWIN
 #define qemu_fgetxattr(...) fgetxattr(__VA_ARGS__, 0, 0)
-#define qemu_lgetxattr(...) getxattr(__VA_ARGS__, 0, XATTR_NOFOLLOW)
-#define qemu_llistxattr(...) listxattr(__VA_ARGS__, XATTR_NOFOLLOW)
-#define qemu_lremovexattr(...) removexattr(__VA_ARGS__, XATTR_NOFOLLOW)
-static inline int qemu_lsetxattr(const char *path, const char *name,
-                                 const void *value, size_t size, int flags) {
-    return setxattr(path, name, value, size, 0, flags | XATTR_NOFOLLOW);
-}
 #else
 #define qemu_fgetxattr fgetxattr
-#define qemu_lgetxattr lgetxattr
-#define qemu_llistxattr llistxattr
-#define qemu_lremovexattr lremovexattr
-#define qemu_lsetxattr lsetxattr
 #endif
 
 static inline void close_preserve_errno(int fd)
-- 
2.30.2

[PULL 3/5] qemu/xattr.h: Exclude <sys/xattr.h> for Windows

[Christian Schoenebeck]

From: Bin Meng <bin.meng@windriver.com>

Windows does not have <sys/xattr.h>.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <20221219102022.2167736-2-bin.meng@windriver.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---
 include/qemu/xattr.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/qemu/xattr.h b/include/qemu/xattr.h
index f1d0f7be74..b08a934acc 100644
--- a/include/qemu/xattr.h
+++ b/include/qemu/xattr.h
@@ -25,7 +25,9 @@
 #  if !defined(ENOATTR)
 #    define ENOATTR ENODATA
 #  endif
-#  include <sys/xattr.h>
+#  ifndef CONFIG_WIN32
+#    include <sys/xattr.h>
+#  endif
 #endif
 
 #endif
-- 
2.30.2

[PULL 1/5] 9pfs: Fix some return statements in the synth backend

[Christian Schoenebeck]

From: Greg Kurz <groug@kaod.org>

The qemu_v9fs_synth_mkdir() and qemu_v9fs_synth_add_file() functions
currently return a positive errno value on failure. This causes
checkpatch.pl to spit several errors like the one below:

ERROR: return of an errno should typically be -ve (return -EAGAIN)
+        return EAGAIN;

Simply change the sign. This has no consequence since callers
assert() the returned value to be equal to 0.

Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <166930551818.827792.10663674346122681963.stgit@bahia>
[C.S.: - Resolve conflict with 66997c42e02c. ]
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---
 hw/9pfs/9p-synth.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/hw/9pfs/9p-synth.c b/hw/9pfs/9p-synth.c
index 38d787f494..f62c40b639 100644
--- a/hw/9pfs/9p-synth.c
+++ b/hw/9pfs/9p-synth.c
@@ -75,10 +75,10 @@ int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode,
     V9fsSynthNode *node, *tmp;
 
     if (!synth_fs) {
-        return EAGAIN;
+        return -EAGAIN;
     }
     if (!name || (strlen(name) >= NAME_MAX)) {
-        return EINVAL;
+        return -EINVAL;
     }
     if (!parent) {
         parent = &synth_root;
@@ -86,7 +86,7 @@ int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode,
     QEMU_LOCK_GUARD(&synth_mutex);
     QLIST_FOREACH(tmp, &parent->child, sibling) {
         if (!strcmp(tmp->name, name)) {
-            return EEXIST;
+            return -EEXIST;
         }
     }
     /* Add the name */
@@ -106,10 +106,10 @@ int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode,
     V9fsSynthNode *node, *tmp;
 
     if (!synth_fs) {
-        return EAGAIN;
+        return -EAGAIN;
     }
     if (!name || (strlen(name) >= NAME_MAX)) {
-        return EINVAL;
+        return -EINVAL;
     }
     if (!parent) {
         parent = &synth_root;
@@ -118,7 +118,7 @@ int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode,
     QEMU_LOCK_GUARD(&synth_mutex);
     QLIST_FOREACH(tmp, &parent->child, sibling) {
         if (!strcmp(tmp->name, name)) {
-            return EEXIST;
+            return -EEXIST;
         }
     }
     /* Add file type and remove write bits */
-- 
2.30.2

[PULL 5/5] hw/9pfs: Replace the direct call to xxxat() APIs with a wrapper

[Christian Schoenebeck]

From: Bin Meng <bin.meng@windriver.com>

xxxat() APIs are only available on POSIX platforms. For future
extension to Windows, let's replace the direct call to xxxat()
APIs with a wrapper.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Message-Id: <20221219102022.2167736-4-bin.meng@windriver.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---
 hw/9pfs/9p-local.c | 32 ++++++++++++++++----------------
 hw/9pfs/9p-util.h  | 15 +++++++++++----
 2 files changed, 27 insertions(+), 20 deletions(-)

diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
index d42ce6d8b8..d2246a3d7e 100644
--- a/hw/9pfs/9p-local.c
+++ b/hw/9pfs/9p-local.c
@@ -103,14 +103,14 @@ static void renameat_preserve_errno(int odirfd, const char *opath, int ndirfd,
                                     const char *npath)
 {
     int serrno = errno;
-    renameat(odirfd, opath, ndirfd, npath);
+    qemu_renameat(odirfd, opath, ndirfd, npath);
     errno = serrno;
 }
 
 static void unlinkat_preserve_errno(int dirfd, const char *path, int flags)
 {
     int serrno = errno;
-    unlinkat(dirfd, path, flags);
+    qemu_unlinkat(dirfd, path, flags);
     errno = serrno;
 }
 
@@ -194,7 +194,7 @@ static int local_lstat(FsContext *fs_ctx, V9fsPath *fs_path, struct stat *stbuf)
         goto out;
     }
 
-    err = fstatat(dirfd, name, stbuf, AT_SYMLINK_NOFOLLOW);
+    err = qemu_fstatat(dirfd, name, stbuf, AT_SYMLINK_NOFOLLOW);
     if (err) {
         goto err_out;
     }
@@ -253,7 +253,7 @@ static int local_set_mapped_file_attrat(int dirfd, const char *name,
             }
         }
     } else {
-        ret = mkdirat(dirfd, VIRTFS_META_DIR, 0700);
+        ret = qemu_mkdirat(dirfd, VIRTFS_META_DIR, 0700);
         if (ret < 0 && errno != EEXIST) {
             return -1;
         }
@@ -349,7 +349,7 @@ static int fchmodat_nofollow(int dirfd, const char *name, mode_t mode)
      */
 
      /* First, we clear non-racing symlinks out of the way. */
-    if (fstatat(dirfd, name, &stbuf, AT_SYMLINK_NOFOLLOW)) {
+    if (qemu_fstatat(dirfd, name, &stbuf, AT_SYMLINK_NOFOLLOW)) {
         return -1;
     }
     if (S_ISLNK(stbuf.st_mode)) {
@@ -734,7 +734,7 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
 
     if (fs_ctx->export_flags & V9FS_SM_MAPPED ||
         fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
-        err = mkdirat(dirfd, name, fs_ctx->dmode);
+        err = qemu_mkdirat(dirfd, name, fs_ctx->dmode);
         if (err == -1) {
             goto out;
         }
@@ -750,7 +750,7 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
         }
     } else if (fs_ctx->export_flags & V9FS_SM_PASSTHROUGH ||
                fs_ctx->export_flags & V9FS_SM_NONE) {
-        err = mkdirat(dirfd, name, credp->fc_mode);
+        err = qemu_mkdirat(dirfd, name, credp->fc_mode);
         if (err == -1) {
             goto out;
         }
@@ -990,7 +990,7 @@ static int local_link(FsContext *ctx, V9fsPath *oldpath,
     if (ctx->export_flags & V9FS_SM_MAPPED_FILE) {
         int omap_dirfd, nmap_dirfd;
 
-        ret = mkdirat(ndirfd, VIRTFS_META_DIR, 0700);
+        ret = qemu_mkdirat(ndirfd, VIRTFS_META_DIR, 0700);
         if (ret < 0 && errno != EEXIST) {
             goto err_undo_link;
         }
@@ -1085,7 +1085,7 @@ static int local_utimensat(FsContext *s, V9fsPath *fs_path,
         goto out;
     }
 
-    ret = utimensat(dirfd, name, buf, AT_SYMLINK_NOFOLLOW);
+    ret = qemu_utimensat(dirfd, name, buf, AT_SYMLINK_NOFOLLOW);
     close_preserve_errno(dirfd);
 out:
     g_free(dirpath);
@@ -1116,7 +1116,7 @@ static int local_unlinkat_common(FsContext *ctx, int dirfd, const char *name,
             if (fd == -1) {
                 return -1;
             }
-            ret = unlinkat(fd, VIRTFS_META_DIR, AT_REMOVEDIR);
+            ret = qemu_unlinkat(fd, VIRTFS_META_DIR, AT_REMOVEDIR);
             close_preserve_errno(fd);
             if (ret < 0 && errno != ENOENT) {
                 return -1;
@@ -1124,7 +1124,7 @@ static int local_unlinkat_common(FsContext *ctx, int dirfd, const char *name,
         }
         map_dirfd = openat_dir(dirfd, VIRTFS_META_DIR);
         if (map_dirfd != -1) {
-            ret = unlinkat(map_dirfd, name, 0);
+            ret = qemu_unlinkat(map_dirfd, name, 0);
             close_preserve_errno(map_dirfd);
             if (ret < 0 && errno != ENOENT) {
                 return -1;
@@ -1134,7 +1134,7 @@ static int local_unlinkat_common(FsContext *ctx, int dirfd, const char *name,
         }
     }
 
-    return unlinkat(dirfd, name, flags);
+    return qemu_unlinkat(dirfd, name, flags);
 }
 
 static int local_remove(FsContext *ctx, const char *path)
@@ -1151,7 +1151,7 @@ static int local_remove(FsContext *ctx, const char *path)
         goto out;
     }
 
-    if (fstatat(dirfd, name, &stbuf, AT_SYMLINK_NOFOLLOW) < 0) {
+    if (qemu_fstatat(dirfd, name, &stbuf, AT_SYMLINK_NOFOLLOW) < 0) {
         goto err_out;
     }
 
@@ -1296,7 +1296,7 @@ static int local_renameat(FsContext *ctx, V9fsPath *olddir,
         return -1;
     }
 
-    ret = renameat(odirfd, old_name, ndirfd, new_name);
+    ret = qemu_renameat(odirfd, old_name, ndirfd, new_name);
     if (ret < 0) {
         goto out;
     }
@@ -1304,7 +1304,7 @@ static int local_renameat(FsContext *ctx, V9fsPath *olddir,
     if (ctx->export_flags & V9FS_SM_MAPPED_FILE) {
         int omap_dirfd, nmap_dirfd;
 
-        ret = mkdirat(ndirfd, VIRTFS_META_DIR, 0700);
+        ret = qemu_mkdirat(ndirfd, VIRTFS_META_DIR, 0700);
         if (ret < 0 && errno != EEXIST) {
             goto err_undo_rename;
         }
@@ -1321,7 +1321,7 @@ static int local_renameat(FsContext *ctx, V9fsPath *olddir,
         }
 
         /* rename the .virtfs_metadata files */
-        ret = renameat(omap_dirfd, old_name, nmap_dirfd, new_name);
+        ret = qemu_renameat(omap_dirfd, old_name, nmap_dirfd, new_name);
         close_preserve_errno(nmap_dirfd);
         close_preserve_errno(omap_dirfd);
         if (ret < 0 && errno != ENOENT) {
diff --git a/hw/9pfs/9p-util.h b/hw/9pfs/9p-util.h
index ccfc8b1cb3..c314cf381d 100644
--- a/hw/9pfs/9p-util.h
+++ b/hw/9pfs/9p-util.h
@@ -94,6 +94,13 @@ static inline int errno_to_dotl(int err) {
 #define qemu_fgetxattr fgetxattr
 #endif
 
+#define qemu_openat     openat
+#define qemu_fstatat    fstatat
+#define qemu_mkdirat    mkdirat
+#define qemu_renameat   renameat
+#define qemu_utimensat  utimensat
+#define qemu_unlinkat   unlinkat
+
 static inline void close_preserve_errno(int fd)
 {
     int serrno = errno;
@@ -103,8 +110,8 @@ static inline void close_preserve_errno(int fd)
 
 static inline int openat_dir(int dirfd, const char *name)
 {
-    return openat(dirfd, name,
-                  O_DIRECTORY | O_RDONLY | O_NOFOLLOW | O_PATH_9P_UTIL);
+    return qemu_openat(dirfd, name,
+                       O_DIRECTORY | O_RDONLY | O_NOFOLLOW | O_PATH_9P_UTIL);
 }
 
 static inline int openat_file(int dirfd, const char *name, int flags,
@@ -115,8 +122,8 @@ static inline int openat_file(int dirfd, const char *name, int flags,
 #ifndef CONFIG_DARWIN
 again:
 #endif
-    fd = openat(dirfd, name, flags | O_NOFOLLOW | O_NOCTTY | O_NONBLOCK,
-                mode);
+    fd = qemu_openat(dirfd, name, flags | O_NOFOLLOW | O_NOCTTY | O_NONBLOCK,
+                     mode);
     if (fd == -1) {
 #ifndef CONFIG_DARWIN
         if (errno == EPERM && (flags & O_NOATIME)) {
-- 
2.30.2

Re: [PULL 0/5] 9p queue 2022-12-23

[Peter Maydell]

On Fri, 23 Dec 2022 at 11:12, Christian Schoenebeck
<qemu_oss@crudebyte.com> wrote:
>
> The following changes since commit 222059a0fccf4af3be776fe35a5ea2d6a68f9a0b:
>
>   Merge tag 'pull-ppc-20221221' of https://gitlab.com/danielhb/qemu into staging (2022-12-21 18:08:09 +0000)
>
> are available in the Git repository at:
>
>   https://github.com/cschoenebeck/qemu.git tags/pull-9p-20221223
>
> for you to fetch changes up to 6ca60cd7a388a776d72739e5a404e65c19460511:
>
>   hw/9pfs: Replace the direct call to xxxat() APIs with a wrapper (2022-12-23 11:48:13 +0100)
>
> ----------------------------------------------------------------
> 9pfs: Windows host prep, cleanup
>
> * Next preparatory patches for upcoming Windows host support.
>
> * Cleanup patches.
>


Applied, thanks.

Please update the changelog at https://wiki.qemu.org/ChangeLog/8.0
for any user-visible changes.

-- PMM