ffs_fserr
static void ffs_fserr(struct fs *, kauth_cred_t, const char *);
ffs_fserr(fs, NOCRED, "bad block");
ffs_fserr(fs, cred, "file system full");
ffs_fserr(fs, cred, "file system full");
ffs_fserr(fs, cred, "out of inodes");