source: patches/silo-1.4.14-fixes-3.patch@ 6cf542f

Rules.make

@@ -1 @@
-VERSION=1.4.14
+VERSION=1.4.14_git20120901
 IMGVERSION=0.99
 SHELL=/bin/bash
 RM=rm -f
@@ -18 +18 @@
                 > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
 
 CFLAGS = -Os -Wall -I. -I../include -fomit-frame-pointer \
-        -fno-strict-aliasing -DSMALL_RELOC=$(SMALL_RELOC) \
-        -DLARGE_RELOC=$(LARGE_RELOC)
+        -fno-strict-aliasing -U_FORTIFY_SOURCE \
+        -DSMALL_RELOC=$(SMALL_RELOC) -DLARGE_RELOC=$(LARGE_RELOC)
 
 ifeq ($(call cc-option-yn, -fno-stack-protector),y)
 CFLAGS += -fno-stack-protector

common/.gitignore

@@ +1 @@
+#
+# Generated files
+#
+bin2h

common/divdi3.S

@@ -20 +20 @@
         .data
         .align 8
         .globl  __clz_tab
+        .register %g2,#scratch
+        .register %g3,#scratch
 __clz_tab:
         .byte   0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5
         .byte   6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6

common/malloc.c

@@ -18 +18 @@
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
    USA.  */
 
+#include <stringops.h>
+
 #ifndef MALLOC_BASE
 extern unsigned long _start;
 static char *malloc_ptr = ((char *)&_start) + 0x30000;
@@ -27 +29 @@
 
 static char *last_alloc = 0;
 
+static char *align_ptr_to(char *ptr, unsigned long align)
+{
+    return (char *) ((((unsigned long) ptr) + (align - 1UL)) &
+                     ~(align - 1UL));
+}
+
 void *malloc (int size)
 {
     char *caddr;
@@ -34 +42 @@
     caddr = malloc_ptr;
     malloc_ptr += size;
     last_alloc = caddr;
-    malloc_ptr = (char *) ((((unsigned long) malloc_ptr) + 7) & (~7));
+    malloc_ptr = align_ptr_to(malloc_ptr, 8UL);
     return caddr;
 }
 
+void *calloc (int nmemb, int memb_size)
+{
+    char *ret;
+    int size;
+
+    if (!nmemb || !memb_size)
+        return (void *) 0;
+
+    size = nmemb * memb_size;
+    ret = malloc(size);
+
+    if (ret)
+        memset(ret, 0, size);
+
+    return ret;
+}
+
+int posix_memalign(void **memptr, unsigned long alignment, unsigned long size)
+{
+    char *caddr;
+
+    if (alignment & (alignment - 1UL))
+        return -1;
+    if (alignment & (sizeof(void *) - 1UL))
+        return -1;
+
+    if (size == 0) {
+      *memptr = (void *) 0;
+      return 0;
+    }
+
+    caddr = align_ptr_to(malloc_ptr, alignment);
+    malloc_ptr = (caddr + size);
+    last_alloc = caddr;
+    malloc_ptr = align_ptr_to(malloc_ptr, 8UL);
+
+    *memptr = caddr;
+
+    return 0;
+}
+
 void free (void *m)
 {
     if (m == last_alloc)

common/printf.c

@@ -21 +21 @@
    USA.  */
 
 #include "promlib.h"
+#include <stringops.h>
 
 /*
  * This part is rewritten by Igor Timkin <ivt@msu.su>. Than I
@@ -147 +148 @@
     vprintf (fmt, x1);
     va_end (x1);
 }
+
+static int sprintn (char *str, long long n, int b)
+{
+    static char prbuf[33];
+    register char *cp;
+    int count = 0;
+
+    if (b == 10 && n < 0) {
+        memset (str + count, '-', 1);
+        count++;
+        n = -n;
+    }
+    cp = prbuf;
+    do
+        *cp++ = "0123456789ABCDEF"[(unsigned int) (((unsigned long)n) % b)];
+    while ((n = ((unsigned long long)n) / b & 0x0FFFFFFFFFFFFFFFULL));
+    do {
+        memset (str + count, *--cp, 1);
+        count++;
+    } while (cp > prbuf);
+
+    return count;
+}
+
+int vsprintf (char *str, char *fmt, va_list adx)
+{
+    register int c;
+    char *s;
+    int count = 0;
+
+    for (;;) {
+        while ((c = *fmt++) != '%') {
+            memset (str + count, c, 1);
+            if (c == '\0') {
+                return count;
+            }
+        }
+        c = *fmt++;
+        if (c == 'd' || c == 'o' || c == 'x' || c == 'X') {
+            count += sprintn (str + count, (long long) va_arg (adx, unsigned),
+                             c == 'o' ? 8 : (c == 'd' ? 10 : 16));
+        } else if (c == 'c') {
+            memset (str + count, va_arg (adx, unsigned), 1);
+            count++;
+        } else if (c == 's') {
+            if ((s = va_arg (adx, char *)) == NULL)
+                s = (char *)"(null)";
+            while ((c = *s++)) {
+                memset (str + count, c, 1);
+                count++;
+            }
+        } else if (c == 'l' || c == 'O') {
+            count += sprintn (str + count, (long long) va_arg (adx, long), c == 'l' ? 10 : 8);
+        } else if (c == 'L') {
+            int hex = 0;
+            if (*fmt == 'x') {
+                fmt++;
+                hex = 1;
+            }
+            count += sprintn (str + count, (long long) va_arg (adx, long long), hex ? 16 : 10);
+        } else {
+            /* This is basically what libc's printf does */
+            memset (str + count, '%', 1);
+            count++;
+            memset (str + count, c, 1);
+            count++;
+        }
+    }
+
+    return count;
+}
+
+/*
+ * Scaled down version of C Library sprintf.
+ * Only %c %s %d (==%u) %o %x %X %l %O are recognized.
+ */
+
+int sprintf (char *s, char *format, ...)
+{
+    va_list arg;
+    int done;
+
+    va_start (arg, format);
+    done = vsprintf (s, format, arg);
+    va_end (arg);
+
+    return done;
+}

common/udivdi3.S

@@ -20 +20 @@
         .text
         .align 4
         .globl __udivdi3
+        .register %g2,#scratch
+        .register %g3,#scratch
 __udivdi3:
         save %sp,-104,%sp
         mov %i3,%o3

first/.gitignore

@@ +1 @@
+#
+# Generated files
+#
+fd
+fd.b
+fd.h
+first
+first.b
+first.h
+generic
+generic.b
+generic.h
+ieee32.b
+ultra
+ultra.b
+ultra.h

first-isofs/.gitignore

@@ +1 @@
+#
+# Generated files
+#
+isofs
+isofs.b

include/ext2fs/ext2fs.h

@@ -39 +39 @@
  */
 #define EXT2_LIB_CURRENT_REV    0
 
-#ifdef HAVE_SYS_TYPES_H
+#if defined(HAVE_SYS_TYPES_H)
 #include <sys/types.h>
 #endif
 

include/silo.h

@@ -87 +87 @@
 void silo_disk_close(void);
 /* printf.c */
 int vprintf (char *, va_list);
+int vsprintf (char *str, char *fmt, va_list adx);
+int sprintf (char *s, char *format, ...);
 int putchar (int);
 /* malloc.c */
 void *malloc (int);
@@ -123 +125 @@
 int decompress (char *, char *, unsigned char (*)(void), void (*)(void));
 /* main.c */
 extern enum arch architecture;
+extern int sun4v_cpu;
 /* timer.c */
 int init_timer ();
 void close_timer ();

include/stringops.h

@@ -2 +2 @@
 #define __STRINGOPS_H
 
 #include <silo.h>
+#include <stddef.h>
 
 /* common */
 #ifndef __SIZE_TYPE__
 #define __SIZE_TYPE__ long unsigned int
 #endif
-#ifndef _LINUX_TYPES_H
 typedef __SIZE_TYPE__ size_t;
-#endif
 
 /* stringops1.c */
 char *strcpy(char *, const char *);

second/.gitignore

@@ +1 @@
+#
+# Generated files
+#
+second
+second.b
+second.b2
+second2
+silotftp
+silotftp.b
+silotftp.b2
+silotftp2
+util

second/Makefile

@@ -58 +58 @@
         $(AR) rc $@ $(FS_OBJS)
 
 second: $(OBJS) mark.o
-        $(LD) $(LDFLAGS_SMALL) -Bstatic -o second $(OBJS) -lext2fs mark.o
-        $(LD) $(LDFLAGS_LARGE) -Bstatic -o second2 $(OBJS) -lext2fs mark.o
+        $(LD) $(LDFLAGS_SMALL) -Bstatic -o second $(OBJS) mark.o `$(CC) -print-libgcc-file-name`
+        $(LD) $(LDFLAGS_LARGE) -Bstatic -o second2 $(OBJS) mark.o `$(CC) -print-libgcc-file-name`
         $(NM) second | grep -v '*ABS*' | sort > second.map
 
 silotftp: $(OBJSNET) mark.o
-        $(LD) $(LDFLAGS_SMALL) -Bstatic -o silotftp $(OBJSNET) -lext2fs mark.o
-        $(LD) $(LDFLAGS_LARGE) -Bstatic -o silotftp2 $(OBJSNET) -lext2fs mark.o
+        $(LD) $(LDFLAGS_SMALL) -Bstatic -o silotftp $(OBJSNET) mark.o `$(CC) -print-libgcc-file-name`
+        $(LD) $(LDFLAGS_LARGE) -Bstatic -o silotftp2 $(OBJSNET) mark.o `$(CC) -print-libgcc-file-name`
         $(NM) silotftp | grep -v '*ABS*' | sort > silotftp.map
 
 second.l: second

second/file.c

@@ -19 +19 @@
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
    USA.  */
 
+#include <sys/types.h>
 #include <silo.h>
 #include <file.h>
 #include <stringops.h>

second/fs/ext2.c

@@ -3 +3 @@
    Copyright (C) 1996 Maurizio Plaza
                  1996,1997,1999 Jakub Jelinek
                  2001 Ben Collins
+                 2012 David S. Miller
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -27 +28 @@
 static ino_t inode = 0;
 struct fs_ops ext2_fs_ops;
 
-void com_err (const char *a, long i, const char *fmt,...)
+#define EXT2_SUPER_MAGIC        0xEF53
+
+static __u32 ext2_to_cpu_32(__u32 v)
 {
-    printf ((char *) fmt);
+        const __u8 *p = (const __u8 *) &v;
+
+        return ((__u32)p[3] << 24 |
+                (__u32)p[2] << 16 |
+                (__u32)p[1] <<  8 |
+                (__u32)p[0]);
 }
 
-static void ext2fs_error (int errcode)
+static __u16 ext2_to_cpu_16(__u16 v)
 {
-#if 0
-    int i;
-    for (i = 0; i < sizeof (ext2errors) / sizeof (ext2errors[0]); i++)
-        if (ext2errors[i].errnum == errcode) {
-            printf ("%s", ext2errors [i].desc);
-            return;
-        }
-#endif
-    printf ("Unknown ext2 error: %d", errcode);
+        const __u8 *p = (const __u8 *) &v;
+
+        return ((__u16)p[1] << 8) | ((__u16)p[0]);
 }
 
-static int open_ext2 (char *device)
+struct silo_ext2_state {
+        struct ext2_super_block *super;
+
+        void                    *scratch_block[4];
+        __u32                   scratch_block_blk[4];
+
+        __u32                   inode_size;
+        __u32                   block_size;
+        __u32                   addr_per_block;
+        __u32                   addr_per_block_bits;
+        __u32                   desc_per_block;
+        __u32                   desc_per_block_bits;
+};
+static struct silo_ext2_state *sstate;
+
+static __u32 ext2_inode_size(struct silo_ext2_state *s)
 {
-    int retval;
+        __u32 rev = ext2_to_cpu_32(s->super->s_rev_level);
 
-    retval = ext2fs_open (device, EXT2_FLAG_DIRTY, 0, 0, silo_io_manager, &fs);
-    if (retval == EXT2_ET_BAD_MAGIC)
-        return 0;
-    if (retval) {
-        printf ("\n");
-        ext2fs_error (retval);
-        printf ("\n");
-        return 0;
-    }
-    root = EXT2_ROOT_INO;
-    return 1;
+        if (rev == 0)
+                return 128;
+
+        return ext2_to_cpu_16(s->super->s_inode_size);
 }
 
-static int dump_block_ext2 (ext2_filsys fs, blk_t *blocknr,
-                            int blockcnt, void *private)
+static __u32 ext2_block_size(struct silo_ext2_state *s)
 {
-    return dump_block(blocknr, blockcnt);
+        __u32 x = ext2_to_cpu_32(s->super->s_log_block_size);
+
+        x += 1;
+
+        return ((__u32) 1 << x) * 512;
 }
 
-static int dump_ext2 (void)
+static void read_scratch_block(struct silo_ext2_state *s, __u32 block, int N)
 {
-    if (ext2fs_block_iterate (fs, inode, 0, 0, dump_block_ext2, 0))
+        if (s->scratch_block_blk[N] == block)
+                return;
+        io_channel_read_blk(fs->io, block, 1, s->scratch_block[N]);
+        s->scratch_block_blk[N] = block;
+}
+
+static void read_data(struct silo_ext2_state *s, __u32 block, __u32 off, __u32 len, void *buf)
+{
+        read_scratch_block(s, block, 0);
+        memcpy(buf, s->scratch_block[0] + off, len);
+}
+
+static int has_extents(struct ext2_inode *ip)
+{
+        if (ext2_to_cpu_32(ip->i_flags) & 0x80000)
+                return 1;
         return 0;
+}
+
+#define EXT4_EXT_MAGIC          0xf30a
+
+struct ext4_extent_header {
+        __u16   eh_magic;
+        __u16   eh_entries;
+        __u16   eh_max;
+        __u16   eh_depth;
+        __u32   eh_generation;
+};
+
+struct ext4_extent_idx {
+        __u32   ei_block;
+        __u32   ei_leaf_lo;
+        __u16   ei_leaf_hi;
+        __u16   ei_unused;
+};
+
+struct ext4_extent {
+        __u32   ee_block;
+        __u16   ee_len;
+        __u16   ee_start_hi;
+        __u32   ee_start_lo;
+};
+
+static struct ext4_extent_header *search_leaf(struct silo_ext2_state *s,
+                                              struct ext2_inode *ip,
+                                              unsigned long long file_block)
+{
+        struct ext4_extent_header *ehp;
+
+        ehp = (struct ext4_extent_header *) &ip->i_block[0];
+        for (;;) {
+                unsigned long long ext_block, hi, lo;
+                struct ext4_extent_idx *idxp;
+                int i;
+
+                idxp = (struct ext4_extent_idx *) (ehp + 1);
+
+                if (ext2_to_cpu_16(ehp->eh_magic) != EXT4_EXT_MAGIC)
+                        return (struct ext4_extent_header *) 0;
+
+                if (ehp->eh_depth == ext2_to_cpu_16(0))
+                        return ehp;
+
+                for (i = 0; i < ext2_to_cpu_16(ehp->eh_entries); i++, idxp++)
+                        if (file_block < ext2_to_cpu_32(idxp->ei_block))
+                                break;
+
+                if (i == 0)
+                        return (struct ext4_extent_header *) 0;
+
+                idxp -= 1;
+
+                hi = ((unsigned long long)ext2_to_cpu_16(idxp->ei_leaf_hi)) << 32;
+                lo = ext2_to_cpu_32(idxp->ei_leaf_lo);
+                ext_block = hi | lo;
+
+                read_scratch_block(s, ext_block, 0);
+                ehp = (struct ext4_extent_header *) s->scratch_block[0];
+        }
+}
+
+#define BLOCK_MAP_ERROR (~0ULL)
+
+static int block_to_path(struct silo_ext2_state *s, struct ext2_inode *ip,
+                         int offsets[4], long file_block)
+{
+        int ptrs_bits = s->addr_per_block_bits;
+        int ptrs = s->addr_per_block;
+        const long direct_blocks = EXT2_NDIR_BLOCKS,
+                indirect_blocks = ptrs,
+                double_blocks = (1 << (ptrs_bits * 2));
+        int n = 0;
+
+        if (file_block < 0) {
+                printf("EXT2: Illegal file block %ld\n", file_block);
+        } else if (file_block < direct_blocks) {
+                offsets[n++] = file_block;
+        } else if ((file_block -= direct_blocks) < indirect_blocks) {
+                offsets[n++] = EXT2_IND_BLOCK;
+                offsets[n++] = file_block;
+        } else if ((file_block -= indirect_blocks) < double_blocks) {
+                offsets[n++] = EXT2_DIND_BLOCK;
+                offsets[n++] = file_block >> ptrs_bits;
+                offsets[n++] = file_block & (ptrs - 1);
+        } else if (((file_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) {
+                offsets[n++] = EXT2_TIND_BLOCK;
+                offsets[n++] = file_block >> (ptrs_bits * 2);
+                offsets[n++] = (file_block >> ptrs_bits) & (ptrs - 1);
+                offsets[n++] = file_block & (ptrs - 1);
+        } else {
+                printf("EXT2: File block %ld is too big\n", file_block);
+        }
+
+        return n;
+}
+
+static unsigned long long resolve_path(struct silo_ext2_state *s,
+                                       struct ext2_inode *ip,
+                                       int *offsets, int depth)
+{
+        __u32 *p = ip->i_block + *offsets;
+
+        while (--depth) {
+                __u32 block = ext2_to_cpu_32(*p);
+
+                read_scratch_block(s, block, depth);
+                p = (__u32 *) s->scratch_block[depth] + *++offsets;
+        }
+
+        return ext2_to_cpu_32(*p);
+}
+
+static unsigned long long resolve_extent(struct silo_ext2_state *s,
+                                         struct ext4_extent_header *ehp,
+                                         unsigned long long file_block)
+{
+        unsigned long long hi, lo;
+        struct ext4_extent *ep;
+        int i;
+
+        ep = (struct ext4_extent *) (ehp + 1);
+
+        for (i = 0; i < ext2_to_cpu_16(ehp->eh_entries); i++, ep++)
+                if (file_block < ext2_to_cpu_32(ep->ee_block))
+                        break;
+
+        if (i == 0)
+                return BLOCK_MAP_ERROR;
+
+        ep -= 1;
+        file_block -= ext2_to_cpu_32(ep->ee_block);
+        if (file_block >= ext2_to_cpu_16(ep->ee_len))
+                return BLOCK_MAP_ERROR;
 
-    return dump_finish ();
+        hi = ((unsigned long long)ext2_to_cpu_16(ep->ee_start_hi)) << 32;
+        lo = ext2_to_cpu_32(ep->ee_start_lo);
+
+        return (hi | lo) + file_block;
 }
 
-static int ls_ext2_proc(struct ext2_dir_entry *dirent, int offset,
-                        int blocksize, char *buf, void *private)
+static unsigned long long file_to_disk_block(struct silo_ext2_state *s,
+                                             struct ext2_inode *ip,
+                                             unsigned long long file_block)
 {
-    struct ext2_inode ino;
-    int sl = 0, name_len = dirent->name_len & 0xFF;
-    char name[256], symlink[256];
+        if (has_extents(ip)) {
+                struct ext4_extent_header *ehp = search_leaf(s, ip, file_block);
 
-    strncpy(name, dirent->name, name_len);
-    name[name_len] = 0;
+                if (ehp)
+                        return resolve_extent(s, ehp, file_block);
 
-    if (ext2fs_read_inode(fs, dirent->inode, &ino))
-        strcpy (name, "--- error ---");
+                printf("EXT2: Extent leaf search for block %d failed\n",
+                       (int) file_block);
 
-    if (LINUX_S_ISLNK (ino.i_mode)) {
-        sl = 1;
-        if (ext2fs_inode_data_blocks(fs, &ino)) {
-            if (io_channel_read_blk(fs->io, ino.i_block[0], 1, symlink))
-                ino.i_size = 0;
+                return BLOCK_MAP_ERROR;
         } else {
-            strncpy (symlink, (char *)&(ino.i_block[0]),ino.i_size);
+                int depth, offsets[4];
+
+                depth = block_to_path(s, ip, offsets, file_block);
+                if (depth)
+                        return resolve_path(s, ip, offsets, depth);
+
+                printf("EXT2: block --> path on block %d failed\n",
+                       (int) file_block);
+
+                return BLOCK_MAP_ERROR;
+        }
+}
+
+static void read_file(struct silo_ext2_state *s, struct ext2_inode *ip,
+                      __u32 off, __u32 len, void *buf)
+{
+        unsigned long long disk_block;
+
+        disk_block = file_to_disk_block(s, ip, off / s->block_size);
+
+        read_scratch_block(s, disk_block, 0);
+        memcpy(buf, s->scratch_block[0] + (off % s->block_size), len);
+}
+
+static void read_group(struct silo_ext2_state *s, __u32 grp_no,
+                       struct ext2_group_desc *grp)
+{
+        __u32 first = ext2_to_cpu_32(s->super->s_first_data_block);
+        __u32 blk, offset;
+
+        blk = first + 1 + (grp_no >> s->desc_per_block_bits);
+        offset = (grp_no & (s->desc_per_block - 1)) * sizeof(*grp);
+
+        read_data(s, blk, offset, sizeof(*grp), grp);
+}
+
+static void read_inode(struct silo_ext2_state *s, __u32 ino, struct ext2_inode *ip)
+{
+        __u32 grp_no, blk_no, inode_in_block, ipg, ipb;
+        struct ext2_super_block *sb = s->super;
+        struct ext2_group_desc gd;
+
+        ipg = ext2_to_cpu_32(sb->s_inodes_per_group);
+
+        grp_no = (ino - 1) / ipg;
+        read_group(s, grp_no, &gd);
+
+        blk_no = (ino - 1) % ipg;
+        inode_in_block = blk_no;
+
+        ipb = s->block_size / s->inode_size;
+        blk_no /= ipb;
+        inode_in_block %= ipb;
+
+        read_data(s,
+                  ext2_to_cpu_32(gd.bg_inode_table) + blk_no,
+                  inode_in_block * s->inode_size,
+                  sizeof(struct ext2_inode), ip);
+}
+
+static int calc_ilog2(__u32 n)
+{
+        int i = 0;
+
+        while ((n >>= 1) != 0)
+                i++;
+
+        return i;
+}
+
+static int open_ext2(char *device)
+{
+        struct silo_ext2_state *s = malloc(sizeof(*s));
+        struct ext2_super_block *sb;
+        int err, i;
+
+        if (!s) {
+                printf("Cannot allocate silo_ext2_state\n");
+                return 0;
+        }
+        memset(s, 0, sizeof(*s));
+
+        fs = malloc(sizeof(*fs));
+        if (!fs) {
+                printf("Cannot allocate ext2_filsys\n");
+                goto out_free_s;
+        }
+        memset(fs, 0, sizeof(*fs));
+        err = silo_io_manager->open(device, 0, &fs->io);
+        if (err) {
+                printf("I/O manager open failed (err=%d)\n", err);
+                goto out_free_fs;
+        }
+        fs->io->app_data = fs;
+
+        sb = s->super = malloc(1024);
+        if (!sb) {
+                printf("Cannot allocate ext2 super block\n");
+                goto out_free_fs;
+        }
+
+        io_channel_set_blksize(fs->io, 1024);
+        err = io_channel_read_blk(fs->io, 1, -1024, sb);
+
+        if (ext2_to_cpu_16(sb->s_magic) != EXT2_SUPER_MAGIC) {
+                printf("EXT2 superblock magic is wrong\n");
+                goto out_free_super;
+        }
+
+        s->inode_size = ext2_inode_size(s);
+        s->block_size = ext2_block_size(s);
+
+        io_channel_set_blksize(fs->io, s->block_size);
+
+        s->addr_per_block = s->block_size / sizeof(__u32);
+        s->addr_per_block_bits = calc_ilog2(s->addr_per_block);
+        s->desc_per_block = s->block_size / sizeof(struct ext2_group_desc);
+        s->desc_per_block_bits = calc_ilog2(s->desc_per_block);
+
+        s->scratch_block[0] = malloc(s->block_size * 4);
+        if (!s->scratch_block[0]) {
+                printf("Cannot allocate ext2 scratch blocks\n");
+                goto out_free_super;
+        }
+        for (i = 1; i < 4; i++)
+                s->scratch_block[i] =
+                        s->scratch_block[i - 1] + s->block_size;
+        for (i = 0; i < 4; i++)
+                s->scratch_block_blk[i] = ~(__u32)0;
+
+        root = EXT2_ROOT_INO;
+
+        sstate = s;
+
+        return 1;
+
+out_free_super:
+        free(s->super);
+
+out_free_fs:
+        free(fs);
+        fs = NULL;
+
+out_free_s:
+        free(s);
+        return 0;
+}
+
+void close_ext2 (void)
+{
+        struct silo_ext2_state *s = sstate;
+
+        if (s) {
+                free(s->scratch_block[0]);
+                free(s->super);
+                free(s);
+
+                sstate = (struct silo_ext2_state *) 0;
         }
-        symlink[ino.i_size] = 0;
-    }
+}
+
+static int dump_ext2 (void)
+{
+        struct silo_ext2_state *s = sstate;
+        struct ext2_inode ei;
+        long file_offset;
+        int sz, blk_sz;
+        int blk_cnt;
+
+        read_inode(s, inode, &ei);
+
+        sz = ext2_to_cpu_32(ei.i_size);
+        blk_sz = s->block_size;
+
+        blk_cnt = 0;
+        for (file_offset = 0; file_offset < sz; file_offset += blk_sz) {
+                blk_t disk_block;
+
+                disk_block = file_to_disk_block(s, &ei,
+                                                file_offset / blk_sz);
+                if (disk_block == BLOCK_MAP_ERROR)
+                        return 0;
+
+                if (disk_block)
+                        dump_block(&disk_block, blk_cnt);
+
+                blk_cnt++;
+        }
+
+        return dump_finish ();
+}
+
+static char *read_symlink(struct silo_ext2_state *s, struct ext2_inode *ip, char *namebuf)
+{
+        __u32 isize = ext2_to_cpu_32(ip->i_size);
+
+        if (isize <= 60)
+                return (char *) &ip->i_block[0];
+
+        read_data(s, ext2_to_cpu_32(ip->i_block[0]), 0, isize, namebuf);
+
+        return namebuf;
+}
+
+static int is_symlink(__u16 mode)
+{
+        if ((mode & 0xf000) == 0xa000)
+                return 1;
+        return 0;
+}
+
+typedef int (*dir_callback_t)(struct silo_ext2_state *, struct ext2_dir_entry_2 *, void *);
+
+static int ls_callback(struct silo_ext2_state *s, struct ext2_dir_entry_2 *dirent, void *priv_data)
+{
+        struct ext2_inode e_ino;
+        char *sym = (char *) 0;
+        char symlink_buf[256];
+
+        read_inode(s, ext2_to_cpu_32(dirent->inode), &e_ino);
+
+        if (is_symlink(ext2_to_cpu_16(e_ino.i_mode)))
+                sym = read_symlink(s, &e_ino, symlink_buf);
+
+        register_silo_inode(ext2_to_cpu_32(e_ino.i_mtime),
+                            ext2_to_cpu_32(e_ino.i_size),
+                            ext2_to_cpu_16(e_ino.i_mode),
+                            ext2_to_cpu_16(e_ino.i_uid),
+                            ext2_to_cpu_16(e_ino.i_gid),
+                            dirent->name, sym);
+        return 0;
+}
+
+static void iterate_dir(struct silo_ext2_state *s, __u32 ino, dir_callback_t cb, void *cb_arg)
+{
+        struct ext2_dir_entry_2 e;
+        struct ext2_inode ei;
+        __u32 off, size;
 
-    register_silo_inode(ino.i_mtime, ino.i_size, ino.i_mode, ino.i_uid,
-                        ino.i_gid, name, sl ? symlink : NULL);
+        read_inode(s, ino, &ei);
+        size = ext2_to_cpu_32(ei.i_size);
 
-    return 0;
+        for (off = 0; off < size; ) {
+                read_file(s, &ei, off, 8, &e);
+
+                if (ext2_to_cpu_16(e.rec_len) == 0)
+                        break;
+
+                if (ext2_to_cpu_32(e.inode) == 0 ||
+                    e.name_len == 0) {
+                        off += ext2_to_cpu_16(e.rec_len);
+                        continue;
+                }
+
+                read_file(s, &ei, off + 8, e.name_len, &e.name[0]);
+                e.name[e.name_len] = 0;
+
+                if (cb(s, &e, cb_arg))
+                        break;
+
+                off += ext2_to_cpu_16(e.rec_len);
+        }
 }
 
 static int ls_ext2 (void)
 {
-    return ext2fs_dir_iterate (fs, inode, DIRENT_FLAG_INCLUDE_EMPTY,
-                                 0, ls_ext2_proc, NULL);
+        struct silo_ext2_state *s = sstate;
+
+        iterate_dir(s, inode, ls_callback, 0);
+
+        return 0;
+}
+
+static int ino_size_ext2 (void)
+{
+        struct silo_ext2_state *s = sstate;
+        struct ext2_inode ei = { };
+
+        read_inode(s, inode, &ei);
+
+        return ext2_to_cpu_32(ei.i_size);
+}
+
+struct namei_cb_arg {
+        const char      *name;
+        int             len;
+        ino_t           *ino;
+        int             found;
+};
+
+static int lookup_cb(struct silo_ext2_state *s, struct ext2_dir_entry_2 *dirent, void *priv_data)
+{
+        struct namei_cb_arg *p = priv_data;
+
+        if (p->len != dirent->name_len)
+                return 0;
+        if (strncmp(p->name, dirent->name, p->len))
+                return 0;
+        p->found = 1;
+        *p->ino = ext2_to_cpu_32(dirent->inode);
+        return 1;
 }
 
-static int ino_size_ext2 (void) {
-    struct ext2_inode ei;
-    int retval;
+static int do_lookup(struct silo_ext2_state *s, __u32 dir_ino, const char *name,
+                     int namelen, ino_t *ret_ino)
+{
+        struct namei_cb_arg arg;
+
+        arg.name = name;
+        arg.len = namelen;
+        arg.ino = ret_ino;
+        arg.found = 0;
+
+        iterate_dir(s, dir_ino, lookup_cb, &arg);
 
-    if ((retval = ext2fs_read_inode (fs, inode, &ei))) {
-        printf ("\n");
-        ext2fs_error (retval);
-        printf ("\n");
+        return arg.found ? 0 : -1;
+}
+
+static int open_namei(struct silo_ext2_state *s, const char *name,
+                      int namelen, ino_t root, ino_t base, ino_t *ret_ino);
+
+static int follow_link(struct silo_ext2_state *s, ino_t root, ino_t dir,
+                       ino_t inode, ino_t *res_inode)
+{
+        struct ext2_inode ei = { };
+        char symlink_buf[256];
+        char *sym;
+
+        read_inode(s, inode, &ei);
+        if (!is_symlink(ext2_to_cpu_16(ei.i_mode))) {
+                *res_inode = inode;
+                return 0;
+        }
+        sym = read_symlink(s, &ei, symlink_buf);
+        return open_namei(s, sym, ext2_to_cpu_32(ei.i_size), root, dir, res_inode);
+}
+
+static int dir_namei(struct silo_ext2_state *s, ino_t root, ino_t dir,
+                     const char *pathname, int pathlen,
+                     const char **name, int *namelen,
+                     ino_t *res_inode)
+{
+        const char *thisname;
+        int len, retval;
+        ino_t inode;
+        char c;
+
+        if ((c = *pathname) == '/') {
+                dir = root;
+                pathname++;
+                pathlen--;
+        }
+        while (1) {
+                thisname = pathname;
+                for (len = 0; --pathlen >= 0; len++) {
+                        c = *pathname++;
+                        if (c == '/')
+                                break;
+                }
+                if (pathlen < 0)
+                        break;
+                retval = do_lookup(s, dir, thisname, len, &inode);
+                if (retval)
+                        return retval;
+                retval = follow_link(s, root, dir, inode, &dir);
+                if (retval)
+                        return retval;
+        }
+        *name = thisname;
+        *namelen = len;
+        *res_inode = dir;
         return 0;
-    }
-    return ei.i_size;
 }
 
-static int namei_follow_ext2 (const char *filename) {
-    int ret = ext2fs_namei_follow (fs, root, root, filename, &inode);
+static int open_namei(struct silo_ext2_state *s, const char *name,
+                      int namelen, ino_t root, ino_t base, ino_t *ret_ino)
+{
+        const char *base_name;
+        ino_t dir_ino, inode;
+        int ret;
+
+        ret = dir_namei(s, root, base, name, namelen,
+                        &base_name, &namelen, &dir_ino);
+        if (ret)
+                return ret;
+
+        if (!namelen) {
+                *ret_ino = dir_ino;
+                return 0;
+        }
 
-    ext2_fs_ops.have_inode = (inode) ? 1 : 0;
+        ret = do_lookup(s, dir_ino, base_name, namelen, &inode);
+        if (ret)
+                return ret;
+
+        ret = follow_link(s, root, dir_ino, inode, &inode);
+        if (ret)
+                return ret;
 
-    return ret;
+        *ret_ino = inode;
+        return 0;
 }
 
-static void print_error_ext2 (int error_val) {
-    ext2fs_error (error_val);
+static int namei_follow_ext2 (const char *filename)
+{
+        int ret;
+
+        ret = open_namei(sstate, filename, strlen(filename),
+                         root, root, &inode);
+
+        ext2_fs_ops.have_inode = inode ? 1 : 0;
+
+        return ret;
 }
 
-void close_ext2 (void) {
-    ext2fs_close(fs);
+static void print_error_ext2 (int error_val)
+{
+        printf("error: %d", error_val);
 }
 
 struct fs_ops ext2_fs_ops = {
@@ -152 +689 @@
     .namei_follow       = namei_follow_ext2,
     .have_inode         = 0,
 };
-
-/* These are silly stubs to satisfy libext2fs symbols */
-unsigned long time(void)
-{
-        return 0;
-}
-
-void *realloc(void *p, int size)
-{
-        return NULL;
-}

second/ls.c

@@ -18 +18 @@
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
    USA.  */
 
+#include <sys/types.h>
 #include <silo.h>
 #include <stringops.h>
 

second/main.c

@@ -25 +25 @@
 /* TODO: This file is a good candidate for rewrite from scratch.  */
 
 #include <silo.h>
-#include <asm/page.h>
-#include <linux/elf.h>
+#include <elf.h>
 #include <stringops.h>
 
 #ifndef NULL
@@ -65 +64 @@
     CMD_LS
 } load_cmd;
 enum arch architecture;
+int sun4v_cpu;
 static int timer_status = 0;
 static char *initrd_start;
 static int initrd_size;

second/misc.c

@@ -501 +501 @@
         if ((i = prom_searchsiblings(i, "MicroSPARC-IIep")) != 0) {
             return sun4p;
         }
-        return sun4u;
+        buffer[4] = 'u';
     }
     i = prom_getproperty (prom_root_node, "compatability", buffer, 8);
 
@@ -517 +517 @@
         return sun4d;
     case 'e':
         return sun4e;
-    case 'u':
     case 'v':
+        sun4v_cpu = 1;
+        /* FALLTHRU */
+    case 'u':
         return sun4u;
     default:
         for(i = 0; i < NUM_SUN_MACHINES; i++)

second/muldi3.S

@@ -20 +20 @@
         .text
         .align 4
         .globl __muldi3
+        .register %g2,#scratch
+        .register %g3,#scratch
 __muldi3:
         save  %sp, -104, %sp
         wr  %g0, %i1, %y

second/timer.c

@@ -156 +156 @@
     }
     if (!foundcpu || !clock_frequency)
         clock_frequency = prom_getint(prom_root_node, "clock-frequency") / 100;
-    if (notimer) {
+    if (notimer && !sun4v_cpu) {
         sun4u_notimer = 1;
         __asm__ __volatile__ ("\t"
                 "rd     %%tick_cmpr, %%g1\n\t"

silo/.gitignore

@@ +1 @@
+#
+# Generated files
+#
+floppy.h
+silo
+silocheck

tilo/.gitignore

@@ +1 @@
+#
+# Generated files
+#
+b.h
+b.out
+b2.h
+b2.out
+boot
+boot2
+maketilo