X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fbtrfs-util.c;fp=src%2Fshared%2Fbtrfs-util.c;h=6761501da2589166a108be55d0ff9ae39386b4d0;hb=d6ce17c7f02ed3facdb45f65f546e587c2f00950;hp=980963b74880149a507582b2a30afa46eba0ce80;hpb=950c07d421c04e5aae99973479f4f13131fb45e1;p=elogind.git

diff --git a/src/shared/btrfs-util.c b/src/shared/btrfs-util.c
index 980963b74..6761501da 100644
--- a/src/shared/btrfs-util.c
+++ b/src/shared/btrfs-util.c
@@ -669,3 +669,29 @@ int btrfs_quota_enable(const char *path, bool b) {
 
         return btrfs_quota_enable_fd(fd, b);
 }
+
+int btrfs_quota_limit_fd(int fd, uint64_t referred_max) {
+        struct btrfs_ioctl_qgroup_limit_args args = {
+                .lim.max_rfer =
+                        referred_max == (uint64_t) -1 ? 0 :
+                        referred_max == 0 ? 1 : referred_max,
+                .lim.flags = BTRFS_QGROUP_LIMIT_MAX_RFER,
+        };
+
+        assert(fd >= 0);
+
+        if (ioctl(fd, BTRFS_IOC_QGROUP_LIMIT, &args) < 0)
+                return -errno;
+
+        return 0;
+}
+
+int btrfs_quota_limit(const char *path, uint64_t referred_max) {
+        _cleanup_close_ int fd = -1;
+
+        fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
+        if (fd < 0)
+                return -errno;
+
+        return btrfs_quota_limit_fd(fd, referred_max);
+}