From bf37f936c4bcd645aebde8a476f325239e9b1f5e Mon Sep 17 00:00:00 2001
From: Omar Sandoval <osandov@osandov.com>
Date: Aug 10 2021 21:29:08 +0000
Subject: Add Facebook-only patch to deter from quotas


---

diff --git a/SOURCES/1101-Require-clowntown-for-quota-enable.patch b/SOURCES/1101-Require-clowntown-for-quota-enable.patch
new file mode 100644
index 0000000..09ab8fa
--- /dev/null
+++ b/SOURCES/1101-Require-clowntown-for-quota-enable.patch
@@ -0,0 +1,86 @@
+From 72dcd3588774126e8769034847dd676a28a33dce Mon Sep 17 00:00:00 2001
+Message-Id: <72dcd3588774126e8769034847dd676a28a33dce.1628630682.git.osandov@fb.com>
+From: Omar Sandoval <osandov@fb.com>
+Date: Tue, 10 Aug 2021 23:24:38 +0200
+Subject: [PATCH] Require --clowntown for quota enable
+
+---
+ cmds/quota.c | 35 ++++++++++++++++++++++++++++++-----
+ 1 file changed, 30 insertions(+), 5 deletions(-)
+
+diff --git a/cmds/quota.c b/cmds/quota.c
+index 246dd277..07380726 100644
+--- a/cmds/quota.c
++++ b/cmds/quota.c
+@@ -16,6 +16,7 @@
+  * Boston, MA 021110-1307, USA.
+  */
+ 
++#include <getopt.h>
+ #include <sys/ioctl.h>
+ #include <unistd.h>
+ 
+@@ -36,11 +37,11 @@ static int quota_ctl(int cmd, int argc, char **argv)
+ {
+ 	int ret = 0;
+ 	int fd;
+-	char *path = argv[1];
++	char *path = argv[optind];
+ 	struct btrfs_ioctl_quota_ctl_args args;
+ 	DIR *dirstream = NULL;
+ 
+-	if (check_argc_exact(argc, 2))
++	if (check_argc_exact(argc - optind, 1))
+ 		return -1;
+ 
+ 	memset(&args, 0, sizeof(args));
+@@ -60,8 +61,11 @@ static int quota_ctl(int cmd, int argc, char **argv)
+ }
+ 
+ static const char * const cmd_quota_enable_usage[] = {
+-	"btrfs quota enable <path>",
++	"btrfs quota enable --clowntown <path>",
+ 	"Enable subvolume quota support for a filesystem.",
++	"FB-ONLY: Btrfs quotas are not supported at Facebook, so you must use",
++	"the --clowntown flag to enable quotas.",
++	"",
+ 	"Any data already present on the filesystem will not count towards",
+ 	"the space usage numbers. It is recommended to enable quota for a",
+ 	"filesystem before writing any data to it.",
+@@ -71,10 +75,31 @@ static const char * const cmd_quota_enable_usage[] = {
+ static int cmd_quota_enable(const struct cmd_struct *cmd, int argc, char **argv)
+ {
+ 	int ret;
++	bool clowntown = false;
+ 
+-	clean_args_no_options(cmd, argc, argv);
++	optind = 0;
++	while (1) {
++		int c;
++		static const struct option long_options[] = {
++			{ "clowntown", no_argument, NULL, 'c'},
++			{ NULL, 0, NULL, 0 }
++		};
++		c = getopt_long(argc, argv, "", long_options, NULL);
++		if (c < 0)
++			break;
++		switch (c) {
++		case 'c':
++			clowntown = true;
++			break;
++		default:
++			usage(cmd);
++		}
++	}
+ 
+-	ret = quota_ctl(BTRFS_QUOTA_CTL_ENABLE, argc, argv);
++	if (clowntown)
++		ret = quota_ctl(BTRFS_QUOTA_CTL_ENABLE, argc, argv);
++	else
++		ret = -1;
+ 
+ 	if (ret < 0)
+ 		usage(cmd);
+-- 
+2.31.1
+
diff --git a/SPECS/btrfs-progs.spec b/SPECS/btrfs-progs.spec
index 023843c..d249dba 100644
--- a/SPECS/btrfs-progs.spec
+++ b/SPECS/btrfs-progs.spec
@@ -15,6 +15,9 @@ Source2:        gpgkey-F2B41200C54EFB30380C1756C565D5F9D76D583B.gpg
 
 # Patches not for upstream (1000-1400)
 Patch1001:      1001-balance-mkfs-Disable-raid56-modes.patch
+%if 0%{?facebook}
+Patch1101:      1101-Require-clowntown-for-quota-enable.patch
+%endif
 
 BuildRequires:  gnupg2
 BuildRequires:  gcc, autoconf, automake, make
@@ -147,6 +150,7 @@ popd
 %changelog
 * Tue Aug 10 2021 Omar Sandoval <osandov@osandov.com> - 5.13.1-1
 - Update to 5.13.1 for CentOS Hyperscale
+- Add Facebook-only patch to require extra flag for quota enable
 
 * Fri Jul 30 2021 Neal Gompa <ngompa@fedoraproject.org> - 5.13.1-1
 - Update to 5.13.1