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-rw-r--r--src/shared/btrfs-util.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/src/shared/btrfs-util.c b/src/shared/btrfs-util.c
index 164ac9f337..e648121b47 100644
--- a/src/shared/btrfs-util.c
+++ b/src/shared/btrfs-util.c
@@ -531,3 +531,22 @@ finish:
return 0;
}
+
+int btrfs_defrag_fd(int fd) {
+ assert(fd >= 0);
+
+ if (ioctl(fd, BTRFS_IOC_DEFRAG, NULL) < 0)
+ return -errno;
+
+ return 0;
+}
+
+int btrfs_defrag(const char *p) {
+ _cleanup_close_ int fd = -1;
+
+ fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
+ if (fd < 0)
+ return -errno;
+
+ return btrfs_defrag_fd(fd);
+}