Merge omap tree

[firefly-linux-kernel-4.4.55.git] / fs / hfsplus / wrapper.c

diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 6b2dc3a061a8c8e2b5dc725dc8ae972087c08252..72cab78f05091282843baef84d6e03abdc8263aa 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));
@@ -114,6 +117,10 @@ 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
@@ -158,7 +165,9 @@ 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;