[OE-core] [PATCH] pseudo: Add statx support to fix fedora30 issues

[Richard Purdie]

Modern distros (e.g. fedora30) are starting to use the new statx() syscall through
the newly exposed glibc wrapper function in software like coreutils (e.g. the ls
command). Add support to intercept this to pseudo.

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 .../pseudo/files/0001-Add-statx.patch         | 107 ++++++++++++++++++
 meta/recipes-devtools/pseudo/pseudo_git.bb    |   1 +
 2 files changed, 108 insertions(+)
 create mode 100644 meta/recipes-devtools/pseudo/files/0001-Add-statx.patch

diff --git a/meta/recipes-devtools/pseudo/files/0001-Add-statx.patch b/meta/recipes-devtools/pseudo/files/0001-Add-statx.patch
new file mode 100644
index 00000000000..49abc2e0277
--- /dev/null
+++ b/meta/recipes-devtools/pseudo/files/0001-Add-statx.patch
@@ -0,0 +1,107 @@
+From 4e41a05de1f34ba00a68ca4f20fb49c4d1cbd2d0 Mon Sep 17 00:00:00 2001
+From: Richard Purdie <richard.purdie at linuxfoundation.org>
+Date: Wed, 6 Nov 2019 12:17:46 +0000
+Subject: [PATCH] Add statx glibc/syscall support
+
+Modern distros (e.g. fedora30) are starting to use the new statx() syscall through
+the newly exposed glibc wrapper function in software like coreutils (e.g. the ls
+command). Add support to intercept this to pseudo.
+
+Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
+Upstream-Status: Submitted [Emailed to seebs]
+---
+ ports/linux/guts/statx.c | 48 ++++++++++++++++++++++++++++++++++++++++
+ ports/linux/portdefs.h   |  1 +
+ ports/linux/wrapfuncs.in |  1 +
+ 3 files changed, 50 insertions(+)
+ create mode 100644 ports/linux/guts/statx.c
+
+diff --git a/ports/linux/statx/guts/statx.c b/ports/linux/statx/guts/statx.c
+new file mode 100644
+index 0000000..a3259c4
+--- /dev/null
++++ b/ports/linux/statx/guts/statx.c
+@@ -0,0 +1,43 @@
++/*
++ * Copyright (c) 2019 Linux Foundation
++ * Author: Richard Purdie
++ *
++ * SPDX-License-Identifier: LGPL-2.1-only
++ *
++ * int
++ * statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf) {
++ * wrap___fxstat64(int ver, int fd, struct stat64 *buf) {
++ *	int rc = -1;
++ */
++	pseudo_msg_t *msg;
++	PSEUDO_STATBUF buf;
++	int save_errno;
++
++	rc = real_statx(dirfd, pathname, flags, mask, statxbuf);
++	save_errno = errno;
++	if (rc == -1) {
++		return rc;
++	}
++
++	buf.st_uid = statxbuf->stx_uid;
++	buf.st_gid = statxbuf->stx_gid;
++	buf.st_dev = makedev(statxbuf->stx_dev_major, statxbuf->stx_dev_minor);
++	buf.st_ino = statxbuf->stx_ino;
++	buf.st_mode = statxbuf->stx_mode;
++	buf.st_rdev = makedev(statxbuf->stx_rdev_major, statxbuf->stx_rdev_minor);
++	buf.st_nlink = statxbuf->stx_nlink;
++	msg = pseudo_client_op(OP_STAT, 0, -1, dirfd, pathname, &buf);
++	if (msg && msg->result == RESULT_SUCCEED) {
++		pseudo_debug(PDBGF_FILE, "statx(path %s), flags %o, stat rc %d, stat uid %o\n", pathname, flags, rc, statxbuf->stx_uid);
++		statxbuf->stx_uid = msg->uid;
++		statxbuf->stx_gid = msg->gid;
++		statxbuf->stx_mode = msg->mode;
++		statxbuf->stx_rdev_major = major(msg->rdev);
++		statxbuf->stx_rdev_minor = minor(msg->rdev);
++	} else {
++		pseudo_debug(PDBGF_FILE, "statx(path %s) failed, flags %o, stat rc %d, stat uid %o\n", pathname, flags, rc, statxbuf->stx_uid);
++	}
++	errno = save_errno;
++/*	return rc;
++ * }
++ */
+diff --git a/ports/linux/statx/portdefs.h b/ports/linux/statx/portdefs.h
+new file mode 100644
+index 0000000..bf934dc
+--- /dev/null
++++ b/ports/linux/statx/portdefs.h
+@@ -0,0 +1,6 @@
++/*
++ * SPDX-License-Identifier: LGPL-2.1-only
++ *
++ */
++#include <sys/stat.h>
++#include <sys/sysmacros.h>
+diff --git a/ports/linux/statx/wrapfuncs.in b/ports/linux/statx/wrapfuncs.in
+new file mode 100644
+index 0000000..c9cd4c3
+--- /dev/null
++++ b/ports/linux/statx/wrapfuncs.in
+@@ -0,0 +1 @@
++int statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf);
+diff --git a/ports/linux/subports b/ports/linux/subports
+index a29044a..49081bf 100755
+--- a/ports/linux/subports
++++ b/ports/linux/subports
+@@ -54,3 +54,13 @@ else
+ fi
+ rm -f dummy.c dummy.o
+ 
++cat > dummy.c <<EOF
++#define _GNU_SOURCE
++#include <sys/stat.h>
++struct statx x;
++EOF
++if ${CC} -c -o dummy.o dummy.c >/dev/null 2>&1; then
++	echo "linux/statx"
++fi
++rm -f dummy.c dummy.o
++
+-- 
+2.17.1
+
diff --git a/meta/recipes-devtools/pseudo/pseudo_git.bb b/meta/recipes-devtools/pseudo/pseudo_git.bb
index 78500e1cc6d..1f2df4a427e 100644
--- a/meta/recipes-devtools/pseudo/pseudo_git.bb
+++ b/meta/recipes-devtools/pseudo/pseudo_git.bb
@@ -7,6 +7,7 @@ SRC_URI = "git://git.yoctoproject.org/pseudo \
            file://moreretries.patch \
            file://toomanyfiles.patch \
            file://0001-maketables-wrappers-use-Python-3.patch \
+           file://0001-Add-statx.patch \
            "
 
 SRCREV = "060058bb29f70b244e685b3c704eb0641b736f73"
-- 
2.20.1