Apparently some of the i386 boot blocks are so close to full that adding

single lines to ufsread.c spills them over. Duplicate a whole bunch of
code to get file sizes into boot1.efi/boot1.c rather than modifying
ufsread.c.

sys/boot/amd64/boot1.efi/Makefile

@@ -55,6 +55,8 @@ boot1.efi: loader.sym
 
 CFLAGS+=	-I${.CURDIR}/../../common
 
+boot1.o: ${.CURDIR}/../../common/ufsread.c
+
 .endif # ${COMPILER_TYPE} != "gcc"
 
 .include <bsd.prog.mk>

sys/boot/amd64/boot1.efi/boot1.c

@@ -169,6 +169,88 @@ dskread(void *buf, u_int64_t lba, int nblk)
 
 #include "ufsread.c"
 
+static ssize_t
+fsstat(ufs_ino_t inode)
+{
+#ifndef UFS2_ONLY
+	static struct ufs1_dinode dp1;
+	ufs1_daddr_t addr1;
+#endif
+#ifndef UFS1_ONLY
+	static struct ufs2_dinode dp2;
+#endif
+	static struct fs fs;
+	static ufs_ino_t inomap;
+	char *blkbuf;
+	void *indbuf;
+	size_t n, nb, size, off, vboff;
+	ufs_lbn_t lbn;
+	ufs2_daddr_t addr2, vbaddr;
+	static ufs2_daddr_t blkmap, indmap;
+	u_int u;
+
+	blkbuf = dmadat->blkbuf;
+	indbuf = dmadat->indbuf;
+	if (!dsk_meta) {
+		inomap = 0;
+		for (n = 0; sblock_try[n] != -1; n++) {
+			if (dskread(dmadat->sbbuf, sblock_try[n] / DEV_BSIZE,
+			    SBLOCKSIZE / DEV_BSIZE))
+				return -1;
+			memcpy(&fs, dmadat->sbbuf, sizeof(struct fs));
+			if ((
+#if defined(UFS1_ONLY)
+			    fs.fs_magic == FS_UFS1_MAGIC
+#elif defined(UFS2_ONLY)
+			    (fs.fs_magic == FS_UFS2_MAGIC &&
+			    fs.fs_sblockloc == sblock_try[n])
+#else
+			    fs.fs_magic == FS_UFS1_MAGIC ||
+			    (fs.fs_magic == FS_UFS2_MAGIC &&
+			    fs.fs_sblockloc == sblock_try[n])
+#endif
+			    ) &&
+			    fs.fs_bsize <= MAXBSIZE &&
+			    fs.fs_bsize >= sizeof(struct fs))
+				break;
+		}
+		if (sblock_try[n] == -1) {
+			printf("Not ufs\n");
+			return -1;
+		}
+		dsk_meta++;
+	} else
+		memcpy(&fs, dmadat->sbbuf, sizeof(struct fs));
+	if (!inode)
+		return 0;
+	if (inomap != inode) {
+		n = IPERVBLK(&fs);
+		if (dskread(blkbuf, INO_TO_VBA(&fs, n, inode), DBPERVBLK))
+			return -1;
+		n = INO_TO_VBO(n, inode);
+#if defined(UFS1_ONLY)
+		memcpy(&dp1, (struct ufs1_dinode *)blkbuf + n,
+		    sizeof(struct ufs1_dinode));
+#elif defined(UFS2_ONLY)
+		memcpy(&dp2, (struct ufs2_dinode *)blkbuf + n,
+		    sizeof(struct ufs2_dinode));
+#else
+		if (fs.fs_magic == FS_UFS1_MAGIC)
+			memcpy(&dp1, (struct ufs1_dinode *)blkbuf + n,
+			    sizeof(struct ufs1_dinode));
+		else
+			memcpy(&dp2, (struct ufs2_dinode *)blkbuf + n,
+			    sizeof(struct ufs2_dinode));
+#endif
+		inomap = inode;
+		fs_off = 0;
+		blkmap = indmap = 0;
+	}
+	size = DIP(di_size);
+	n = size - fs_off;
+	return (n);
+}
+
 static struct dmadat __dmadat;
                 
 static int
@@ -203,7 +285,7 @@ load(const char *fname)
 		return;
 	}
 
-	bufsize = fsread(ino, NULL, -1);
+	bufsize = fsstat(ino);
 	status = systab->BootServices->AllocatePool(EfiLoaderData,
 	    bufsize, &buffer);
 	fsread(ino, buffer, bufsize);

sys/boot/common/ufsread.c

@@ -245,8 +245,6 @@ fsread(ufs_ino_t inode, void *buf, size_t nbyte)
 	s = buf;
 	size = DIP(di_size);
 	n = size - fs_off;
-	if (buf == NULL && nbyte == -1)
-		return n;
 	if (nbyte > n)
 		nbyte = n;
 	nb = nbyte;