nfsd4: implement reclaim_complete

[safe/jmp/linux-2.6] / fs / hfsplus / wrapper.c

diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 95455e8..bed78ac 100644 (file)
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -28,8 +28,11 @@ static int hfsplus_read_mdb(void *bufptr, struct hfsplus_wd *wd)
 {
        u32 extent;
        u16 attrib;
+       __be16 sig;
 
-       if (be16_to_cpu(*(__be16 *)(bufptr + HFSP_WRAPOFF_EMBEDSIG)) != HFSPLUS_VOLHEAD_SIG)
+       sig = *(__be16 *)(bufptr + HFSP_WRAPOFF_EMBEDSIG);
+       if (sig != cpu_to_be16(HFSPLUS_VOLHEAD_SIG) &&
+           sig != cpu_to_be16(HFSPLUS_VOLHEAD_SIGX))
                return 0;
 
        attrib = be16_to_cpu(*(__be16 *)(bufptr + HFSP_WRAPOFF_ATTRIB));
@@ -44,7 +47,7 @@ static int hfsplus_read_mdb(void *bufptr, struct hfsplus_wd *wd)
                return 0;
        wd->ablk_start = be16_to_cpu(*(__be16 *)(bufptr + HFSP_WRAPOFF_ABLKSTART));
 
-       extent = be32_to_cpu(get_unaligned((__be32 *)(bufptr + HFSP_WRAPOFF_EMBEDEXT)));
+       extent = get_unaligned_be32(bufptr + HFSP_WRAPOFF_EMBEDEXT);
        wd->embed_start = (extent >> 16) & 0xFFFF;
        wd->embed_count = extent & 0xFFFF;
 
@@ -70,7 +73,7 @@ static int hfsplus_get_last_session(struct super_block *sb,
                        *start = (sector_t)te.cdte_addr.lba << 2;
                        return 0;
                }
-               printk(KERN_ERR "HFS: Invalid session number or type of track\n");
+               printk(KERN_ERR "hfs: invalid session number or type of track\n");
                return -EINVAL;
        }
        ms_info.addr_format = CDROM_LBA;
@@ -96,6 +99,10 @@ int hfsplus_read_wrapper(struct super_block *sb)
 
        if (hfsplus_get_last_session(sb, &part_start, &part_size))
                return -EINVAL;
+       if ((u64)part_start + part_size > 0x100000000ULL) {
+               pr_err("hfs: volumes larger than 2TB are not supported yet\n");
+               return -EINVAL;
+       }
        while (1) {
                bh = sb_bread512(sb, part_start + HFSPLUS_VOLHEAD_SECTOR, vhdr);
                if (!bh)
@@ -114,6 +121,10 @@ int hfsplus_read_wrapper(struct super_block *sb)
                }
                if (vhdr->signature == cpu_to_be16(HFSPLUS_VOLHEAD_SIG))
                        break;
+               if (vhdr->signature == cpu_to_be16(HFSPLUS_VOLHEAD_SIGX)) {
+                       HFSPLUS_SB(sb).flags |= HFSPLUS_SB_HFSX;
+                       break;
+               }
                brelse(bh);
 
                /* check for a partition block
@@ -143,7 +154,7 @@ int hfsplus_read_wrapper(struct super_block *sb)
                blocksize >>= 1;
 
        if (sb_set_blocksize(sb, blocksize) != blocksize) {
-               printk("HFS+: unable to blocksize to %u!\n", blocksize);
+               printk(KERN_ERR "hfs: unable to set blocksize to %u!\n", blocksize);
                return -EINVAL;
        }
 
@@ -158,7 +169,9 @@ int hfsplus_read_wrapper(struct super_block *sb)
                return -EIO;
 
        /* should still be the same... */
-       if (be16_to_cpu(vhdr->signature) != HFSPLUS_VOLHEAD_SIG)
+       if (vhdr->signature != (HFSPLUS_SB(sb).flags & HFSPLUS_SB_HFSX ?
+                               cpu_to_be16(HFSPLUS_VOLHEAD_SIGX) :
+                               cpu_to_be16(HFSPLUS_VOLHEAD_SIG)))
                goto error;
        HFSPLUS_SB(sb).s_vhbh = bh;
        HFSPLUS_SB(sb).s_vhdr = vhdr;