[PATCH v4 0/2] Add support for using liburing xattr

[PATCH v4 0/2] Add support for using liburing xattr

[Stefan Roesch]

This adds support for using the xattr implementation in liburing.

Patch 1: fstress: add suport for using liburing setxattr
  Uses the liburing setxattr implementation in fsstress.

Patch 2: fstress: add suport for using liburing getxattr
  Uses the liburing getxattr implementation in fsstress.

There are two additional patch series related to this:
- io_uring: add xattr support
- liburing: add xattr support

---
V4: - fix a whitespace/tab issue
V3: - Rebased patch series.
V2: - Introduce dedicated functions for uring getxattr and
      uring setxattr, so they are not automatically linked
      in if liburing is available.

*** BLURB HERE ***

Stefan Roesch (2):
  fstress: add suport for using liburing setxattr
  fstress: add suport for using liburing getxattr

 ltp/fsstress.c | 122 ++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 116 insertions(+), 6 deletions(-)


base-commit: 13dd19cee4298ffc323737029ca36f70f52f88e9
-- 
2.30.2

[PATCH v4 1/2] fstress: add suport for using liburing setxattr

[Stefan Roesch]

Summary:

Liburing added support for setxattr. This change adds
support for this this in fsstress when fsstress is built
with liburing support.

Signed-off-by: Stefan Roesch <shr@fb.com>
---
 ltp/fsstress.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 57 insertions(+), 2 deletions(-)

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 5f3126e6..48d93436 100644
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -145,12 +145,14 @@ typedef enum {
 	OP_URING_WRITE,
 	OP_WRITE,
 	OP_WRITEV,
+	OP_URING_SETXATTR,
 	OP_LAST
 } opty_t;
 
 typedef long long opnum_t;
 
 typedef void (*opfnc_t)(opnum_t, long);
+typedef int (*setxattr_cbk)(const char *, const char *, const void *, size_t, int);
 
 typedef struct opdesc {
 	char	*name;
@@ -276,6 +278,7 @@ void	uring_read_f(opnum_t, long);
 void	uring_write_f(opnum_t, long);
 void	write_f(opnum_t, long);
 void	writev_f(opnum_t, long);
+void	uring_setxattr_f(opnum_t, long);
 char	*xattr_flag_to_string(int);
 
 struct opdesc	ops[OP_LAST]	= {
@@ -346,6 +349,7 @@ struct opdesc	ops[OP_LAST]	= {
 	[OP_URING_WRITE]   = {"uring_write",   uring_write_f,	1, 1 },
 	[OP_WRITE]	   = {"write",	       write_f,		4, 1 },
 	[OP_WRITEV]	   = {"writev",	       writev_f,	4, 1 },
+	[OP_URING_SETXATTR] = {"uring_setxattr", uring_setxattr_f, 1, 1 },
 }, *ops_end;
 
 flist_t	flist[FT_nft] = {
@@ -4771,8 +4775,45 @@ setattr_f(opnum_t opno, long r)
 	close(fd);
 }
 
+static int
+io_uring_setxattr(const char *path, const char *name, const void *value, size_t size,
+	  	 int flags)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int ret;
+
+	sqe = io_uring_get_sqe(&ring);
+	if (!sqe) {
+		printf("io_uring_get_sqe failed\n");
+		ret = -1;
+		goto out;
+	}
+
+	io_uring_prep_setxattr(sqe, name, value, path, flags, size);
+
+	ret = io_uring_submit_and_wait(&ring, 1);
+	if (ret != 1) {
+		printf("io_uring_submit_and_wait failed, ret=%d\n", ret);
+		ret = -1;
+		goto out;
+    	}
+
+	ret = io_uring_wait_cqe(&ring, &cqe);
+	if (ret < 0) {
+		printf("io_uring_wait_cqe failed, ret=%d\n", ret);
+		goto out;
+	}
+
+	ret = cqe->res;
+	io_uring_cqe_seen(&ring, cqe);
+
+out:
+	return ret;
+}
+
 void
-setfattr_f(opnum_t opno, long r)
+setfattr_f_cbk(opnum_t opno, long r, setxattr_cbk cbk)
 {
 	int		e;
 	pathname_t	f;
@@ -4834,7 +4875,7 @@ setfattr_f(opnum_t opno, long r)
 		goto out;
 	}
 
-	e = setxattr(f.path, name, value, value_len, flag) < 0 ? errno : 0;
+	e = cbk(f.path, name, value, value_len, flag) < 0 ? errno : 0;
 	if (e == 0)
 		fep->xattr_counter++;
 	if (v)
@@ -4846,6 +4887,20 @@ out:
 	free_pathname(&f);
 }
 
+void
+uring_setxattr_f(opnum_t opno, long r)
+{
+#ifdef URING
+	setfattr_f_cbk(opno, r, io_uring_setxattr);
+#endif
+}
+
+void
+setfattr_f(opnum_t opno, long r)
+{
+	setfattr_f_cbk(opno, r, setxattr);
+}
+
 void
 snapshot_f(opnum_t opno, long r)
 {
-- 
2.30.2

[PATCH v4 2/2] fstress: add suport for using liburing getxattr

[Stefan Roesch]

Liburing added support for getxattr. This change adds
support for this this in fsstress when fsstress is built
with liburing support.

Signed-off-by: Stefan Roesch <shr@fb.com>
---
 ltp/fsstress.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 59 insertions(+), 4 deletions(-)

diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 48d93436..27bff605 100644
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -145,6 +145,7 @@ typedef enum {
 	OP_URING_WRITE,
 	OP_WRITE,
 	OP_WRITEV,
+	OP_URING_GETXATTR,
 	OP_URING_SETXATTR,
 	OP_LAST
 } opty_t;
@@ -152,6 +153,7 @@ typedef enum {
 typedef long long opnum_t;
 
 typedef void (*opfnc_t)(opnum_t, long);
+typedef ssize_t (*getxattr_cbk)(const char *, const char *, void *, size_t);
 typedef int (*setxattr_cbk)(const char *, const char *, const void *, size_t, int);
 
 typedef struct opdesc {
@@ -278,6 +280,7 @@ void	uring_read_f(opnum_t, long);
 void	uring_write_f(opnum_t, long);
 void	write_f(opnum_t, long);
 void	writev_f(opnum_t, long);
+void	uring_getxattr_f(opnum_t, long);
 void	uring_setxattr_f(opnum_t, long);
 char	*xattr_flag_to_string(int);
 
@@ -349,6 +352,7 @@ struct opdesc	ops[OP_LAST]	= {
 	[OP_URING_WRITE]   = {"uring_write",   uring_write_f,	1, 1 },
 	[OP_WRITE]	   = {"write",	       write_f,		4, 1 },
 	[OP_WRITEV]	   = {"writev",	       writev_f,	4, 1 },
+	[OP_URING_GETXATTR] = {"uring_getxattr", uring_getxattr_f, 1, 0 },
 	[OP_URING_SETXATTR] = {"uring_setxattr", uring_setxattr_f, 1, 1 },
 }, *ops_end;
 
@@ -3891,8 +3895,44 @@ getdents_f(opnum_t opno, long r)
 	closedir(dir);
 }
 
-void
-getfattr_f(opnum_t opno, long r)
+static ssize_t
+io_uring_getxattr(const char *path, const char *name, void *value, size_t size)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int ret;
+
+	sqe = io_uring_get_sqe(&ring);
+	if (!sqe) {
+		printf("io_uring_get_sqe failed\n");
+		ret = -1;
+		goto out;
+	}
+
+	io_uring_prep_getxattr(sqe, name, value, path, size);
+
+	ret = io_uring_submit_and_wait(&ring, 1);
+	if (ret != 1) {
+		printf("io_uring_submit_and_wait failed, ret=%d\n", ret);
+		ret = -1;
+		goto out;
+    	}
+
+	ret = io_uring_wait_cqe(&ring, &cqe);
+	if (ret < 0) {
+		printf("io_uring_wait_cqe failed, ret=%d\n", ret);
+		goto out;
+	}
+
+	ret = cqe->res;
+	io_uring_cqe_seen(&ring, cqe);
+
+out:
+	return ret;
+}
+
+static void
+getfattr_f_cbk(opnum_t opno, long r, getxattr_cbk cbk)
 {
 	fent_t	        *fep;
 	int		e;
@@ -3928,7 +3968,7 @@ getfattr_f(opnum_t opno, long r)
 		goto out;
 	}
 
-	value_len = getxattr(f.path, name, NULL, 0);
+	value_len = cbk(f.path, name, NULL, 0);
 	if (value_len < 0) {
 		if (v)
 			printf("%d/%lld: getfattr file %s name %s failed %d\n",
@@ -3950,7 +3990,8 @@ getfattr_f(opnum_t opno, long r)
 		goto out;
 	}
 
-	e = getxattr(f.path, name, value, value_len) < 0 ? errno : 0;
+	e = cbk(f.path, name, value, value_len) < 0 ? errno : 0;
+
 out_log:
 	if (v)
 		printf("%d/%lld: getfattr file %s name %s value length %d %d\n",
@@ -3960,6 +4001,20 @@ out:
 	free_pathname(&f);
 }
 
+void
+uring_getxattr_f(opnum_t opno, long r)
+{
+#ifdef URING
+	getfattr_f_cbk(opno, r, io_uring_getxattr);
+#endif
+}
+
+void
+getfattr_f(opnum_t opno, long r)
+{
+	getfattr_f_cbk(opno, r, getxattr);
+}
+
 void
 link_f(opnum_t opno, long r)
 {
-- 
2.30.2

Re: [PATCH v4 0/2] Add support for using liburing xattr

[Zorro Lang]

On Thu, Dec 16, 2021 at 10:43:17AM -0800, Stefan Roesch wrote:
> This adds support for using the xattr implementation in liburing.
> 
> Patch 1: fstress: add suport for using liburing setxattr
>   Uses the liburing setxattr implementation in fsstress.
> 
> Patch 2: fstress: add suport for using liburing getxattr
>   Uses the liburing getxattr implementation in fsstress.
> 
> There are two additional patch series related to this:
> - io_uring: add xattr support
> - liburing: add xattr support
> 
> ---
> V4: - fix a whitespace/tab issue
> V3: - Rebased patch series.
> V2: - Introduce dedicated functions for uring getxattr and
>       uring setxattr, so they are not automatically linked
>       in if liburing is available.
> 
> *** BLURB HERE ***
> 
> Stefan Roesch (2):
>   fstress: add suport for using liburing setxattr
>   fstress: add suport for using liburing getxattr

The code logic of this patchset looks good to me. But just notice that the
subject should be "fsstress", not "fstress", you can ask if Eryu would like
to help to change that when he merge the patch :-D

Reviewed-by: Zorro Lang <zlang@redhat.com>

> 
>  ltp/fsstress.c | 122 ++++++++++++++++++++++++++++++++++++++++++++++---
>  1 file changed, 116 insertions(+), 6 deletions(-)
> 
> 
> base-commit: 13dd19cee4298ffc323737029ca36f70f52f88e9
> -- 
> 2.30.2
> 

Re: [PATCH v4 1/2] fstress: add suport for using liburing setxattr

[Eryu Guan]

On Thu, Dec 16, 2021 at 10:43:18AM -0800, Stefan Roesch wrote:
> Summary:
> 
> Liburing added support for setxattr. This change adds
> support for this this in fsstress when fsstress is built
> with liburing support.
> 
> Signed-off-by: Stefan Roesch <shr@fb.com>
> ---
>  ltp/fsstress.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++--
>  1 file changed, 57 insertions(+), 2 deletions(-)
> 
> diff --git a/ltp/fsstress.c b/ltp/fsstress.c
> index 5f3126e6..48d93436 100644
> --- a/ltp/fsstress.c
> +++ b/ltp/fsstress.c
> @@ -145,12 +145,14 @@ typedef enum {
>  	OP_URING_WRITE,
>  	OP_WRITE,
>  	OP_WRITEV,
> +	OP_URING_SETXATTR,
>  	OP_LAST
>  } opty_t;
>  
>  typedef long long opnum_t;
>  
>  typedef void (*opfnc_t)(opnum_t, long);
> +typedef int (*setxattr_cbk)(const char *, const char *, const void *, size_t, int);
>  
>  typedef struct opdesc {
>  	char	*name;
> @@ -276,6 +278,7 @@ void	uring_read_f(opnum_t, long);
>  void	uring_write_f(opnum_t, long);
>  void	write_f(opnum_t, long);
>  void	writev_f(opnum_t, long);
> +void	uring_setxattr_f(opnum_t, long);

Order it by name?

>  char	*xattr_flag_to_string(int);
>  
>  struct opdesc	ops[OP_LAST]	= {
> @@ -346,6 +349,7 @@ struct opdesc	ops[OP_LAST]	= {
>  	[OP_URING_WRITE]   = {"uring_write",   uring_write_f,	1, 1 },
>  	[OP_WRITE]	   = {"write",	       write_f,		4, 1 },
>  	[OP_WRITEV]	   = {"writev",	       writev_f,	4, 1 },
> +	[OP_URING_SETXATTR] = {"uring_setxattr", uring_setxattr_f, 1, 1 },

Make it aligned with other ops as well?

>  }, *ops_end;
>  
>  flist_t	flist[FT_nft] = {
> @@ -4771,8 +4775,45 @@ setattr_f(opnum_t opno, long r)
>  	close(fd);
>  }
>  
> +static int
> +io_uring_setxattr(const char *path, const char *name, const void *value, size_t size,
> +	  	 int flags)

Space before tab in above line.

> +{
> +	struct io_uring_sqe *sqe;
> +	struct io_uring_cqe *cqe;
> +	int ret;
> +
> +	sqe = io_uring_get_sqe(&ring);
> +	if (!sqe) {
> +		printf("io_uring_get_sqe failed\n");
> +		ret = -1;
> +		goto out;
> +	}
> +
> +	io_uring_prep_setxattr(sqe, name, value, path, flags, size);

Seems we have to wait for the liburing patches go in first, otherwise
we'll hit compile error.

> +
> +	ret = io_uring_submit_and_wait(&ring, 1);
> +	if (ret != 1) {
> +		printf("io_uring_submit_and_wait failed, ret=%d\n", ret);
> +		ret = -1;
> +		goto out;
> +    	}

Space before tab in above line.

Thanks,
Eryu

> +
> +	ret = io_uring_wait_cqe(&ring, &cqe);
> +	if (ret < 0) {
> +		printf("io_uring_wait_cqe failed, ret=%d\n", ret);
> +		goto out;
> +	}
> +
> +	ret = cqe->res;
> +	io_uring_cqe_seen(&ring, cqe);
> +
> +out:
> +	return ret;
> +}
> +
>  void
> -setfattr_f(opnum_t opno, long r)
> +setfattr_f_cbk(opnum_t opno, long r, setxattr_cbk cbk)
>  {
>  	int		e;
>  	pathname_t	f;
> @@ -4834,7 +4875,7 @@ setfattr_f(opnum_t opno, long r)
>  		goto out;
>  	}
>  
> -	e = setxattr(f.path, name, value, value_len, flag) < 0 ? errno : 0;
> +	e = cbk(f.path, name, value, value_len, flag) < 0 ? errno : 0;
>  	if (e == 0)
>  		fep->xattr_counter++;
>  	if (v)
> @@ -4846,6 +4887,20 @@ out:
>  	free_pathname(&f);
>  }
>  
> +void
> +uring_setxattr_f(opnum_t opno, long r)
> +{
> +#ifdef URING
> +	setfattr_f_cbk(opno, r, io_uring_setxattr);
> +#endif
> +}
> +
> +void
> +setfattr_f(opnum_t opno, long r)
> +{
> +	setfattr_f_cbk(opno, r, setxattr);
> +}
> +
>  void
>  snapshot_f(opnum_t opno, long r)
>  {
> -- 
> 2.30.2