linux-ext4 - [PATCH 10/29] fuse2fs: allow some control over acls

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Message-ID: <174786677729.1383760.10883670792875770541.stgit@frogsfrogsfrogs>
Date: Wed, 21 May 2025 15:37:31 -0700
From: "Darrick J. Wong" <djwong@...nel.org>
To: tytso@....edu
Cc: linux-ext4@...r.kernel.org
Subject: [PATCH 10/29] fuse2fs: allow some control over acls

From: Darrick J. Wong <djwong@...nel.org>

Allow some control over whether or not ACLs get used, though for kernel
mode it will always be enabled.

Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
---
 misc/fuse2fs.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)


diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c
index 40105368775a93..a0e5d601e55877 100644
--- a/misc/fuse2fs.c
+++ b/misc/fuse2fs.c
@@ -160,6 +160,7 @@ struct fuse2fs {
 	uint8_t norecovery;
 	uint8_t kernel;
 	uint8_t directio;
+	uint8_t acl;
 	unsigned long offset;
 	unsigned int next_generation;
 	unsigned long long cache_size;
@@ -648,6 +649,10 @@ static void *op_init(struct fuse_conn_info *conn
 #ifdef FUSE_CAP_IOCTL_DIR
 	conn->want |= FUSE_CAP_IOCTL_DIR;
 #endif
+#ifdef FUSE_CAP_POSIX_ACL
+	if (ff->acl)
+		conn->want |= FUSE_CAP_POSIX_ACL;
+#endif
 #if FUSE_VERSION >= FUSE_MAKE_VERSION(3, 0)
 	conn->time_gran = 1;
 	cfg->use_ino = 1;
@@ -3813,8 +3818,9 @@ static struct fuse_opt fuse2fs_opts[] = {
 	FUSE2FS_OPT("offset=%lu",	offset,			0),
 	FUSE2FS_OPT("kernel",		kernel,			1),
 	FUSE2FS_OPT("directio",		directio,		1),
+	FUSE2FS_OPT("acl",		acl,			1),
+	FUSE2FS_OPT("noacl",		acl,			0),
 
-	FUSE_OPT_KEY("acl",		FUSE2FS_IGNORED),
 	FUSE_OPT_KEY("user_xattr",	FUSE2FS_IGNORED),
 	FUSE_OPT_KEY("noblock_validity", FUSE2FS_IGNORED),
 	FUSE_OPT_KEY("cache_size=%s",	FUSE2FS_CACHE_SIZE),