[PATCH v10 2/2] erofs-utils: fsck: introduce exporting xattrs

[Gao Xiang]

On 2024/9/13 15:21, Hongzhen Luo wrote:
> Currently `fsck --extract` does not support exporting
> extended attributes. This patch adds the `--xattrs` option
> to dump extended attributes and the `--no-xattrs` option to
> omit them (the default behavior).
> 
> Signed-off-by: Hongzhen Luo <hongzhen at linux.alibaba.com>
> ---

It fails to build on MacOS, I've applied the following fix manually:

diff --git a/configure.ac b/configure.ac
index 945e254..9c1657b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -260,6 +260,7 @@ AC_CHECK_FUNCS(m4_flatten([
  	gettimeofday
  	lgetxattr
  	llistxattr
+	lsetxattr
  	memset
  	realpath
  	lseek64
diff --git a/fsck/main.c b/fsck/main.c
index b514a63..f20b767 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -470,8 +470,15 @@ static int erofsfsck_dump_xattrs(struct erofs_inode *inode)
  			break;
  		}
  		if (fsckcfg.extract_path)
+#ifdef HAVE_LSETXATTR
  			ret = lsetxattr(fsckcfg.extract_path, key, value, size,
  					0);
+#elif defined(__APPLE__)
+			ret = setxattr(fsckcfg.extract_path, key, value, size,
+				       0, XATTR_NOFOLLOW);
+#else
+			ret = -EOPNOTSUPP;
+#endif
  		else
  			ret = 0;
  		free(value);

Thanks,
Gao Xiang