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

[Stefan Roesch <shr@fb.com>]

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