1 files changed, 40 insertions, 13 deletions

diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 629e09b38c5c..92e383af3709 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -7,6 +7,7 @@
  *      Minix V2 fs support.
  *
  *  Modified for 680x0 by Andreas Schwab
+ *  Updated to filesystem version 3 by Daniel Aragones
  */
 
 #include <linux/module.h>
@@ -36,7 +37,8 @@ static void minix_put_super(struct super_block *sb)
         struct minix_sb_info *sbi = minix_sb(sb);
 
         if (!(sb->s_flags & MS_RDONLY)) {
-                sbi->s_ms->s_state = sbi->s_mount_state;
+                if (sbi->s_version != MINIX_V3)  /* s_state is now out from V3 sb */
+                        sbi->s_ms->s_state = sbi->s_mount_state;
                 mark_buffer_dirty(sbi->s_sbh);
         }
         for (i = 0; i < sbi->s_imap_blocks; i++)
@@ -93,7 +95,7 @@ static void destroy_inodecache(void)
         kmem_cache_destroy(minix_inode_cachep);
 }
 
-static struct super_operations minix_sops = {
+static const struct super_operations minix_sops = {
         .alloc_inode    = minix_alloc_inode,
         .destroy_inode  = minix_destroy_inode,
         .read_inode     = minix_read_inode,
@@ -117,12 +119,17 @@ static int minix_remount (struct super_block * sb, int * flags, char * data)
                     !(sbi->s_mount_state & MINIX_VALID_FS))
                         return 0;
                 /* Mounting a rw partition read-only. */
-                ms->s_state = sbi->s_mount_state;
+                if (sbi->s_version != MINIX_V3)
+                        ms->s_state = sbi->s_mount_state;
                 mark_buffer_dirty(sbi->s_sbh);
         } else {
                 /* Mount a partition which is read-only, read-write. */
-                sbi->s_mount_state = ms->s_state;
-                ms->s_state &= ~MINIX_VALID_FS;
+                if (sbi->s_version != MINIX_V3) {
+                        sbi->s_mount_state = ms->s_state;
+                        ms->s_state &= ~MINIX_VALID_FS;
+                } else {
+                        sbi->s_mount_state = MINIX_VALID_FS;
+                }
                 mark_buffer_dirty(sbi->s_sbh);
 
                 if (!(sbi->s_mount_state & MINIX_VALID_FS))
@@ -140,7 +147,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
         struct buffer_head *bh;
         struct buffer_head **map;
         struct minix_super_block *ms;
-        int i, block;
+        struct minix3_super_block *m3s = NULL;
+        unsigned long i, block;
         struct inode *root_inode;
         struct minix_sb_info *sbi;
 
@@ -192,6 +200,22 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
                 sbi->s_dirsize = 32;
                 sbi->s_namelen = 30;
                 sbi->s_link_max = MINIX2_LINK_MAX;
+        } else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) {
+                m3s = (struct minix3_super_block *) bh->b_data;
+                s->s_magic = m3s->s_magic;
+                sbi->s_imap_blocks = m3s->s_imap_blocks;
+                sbi->s_zmap_blocks = m3s->s_zmap_blocks;
+                sbi->s_firstdatazone = m3s->s_firstdatazone;
+                sbi->s_log_zone_size = m3s->s_log_zone_size;
+                sbi->s_max_size = m3s->s_max_size;
+                sbi->s_ninodes = m3s->s_ninodes;
+                sbi->s_nzones = m3s->s_zones;
+                sbi->s_dirsize = 64;
+                sbi->s_namelen = 60;
+                sbi->s_version = MINIX_V3;
+                sbi->s_link_max = MINIX2_LINK_MAX;
+                sbi->s_mount_state = MINIX_VALID_FS;
+                sb_set_blocksize(s, m3s->s_blocksize);
         } else
                 goto out_no_fs;
 
@@ -236,7 +260,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
                 s->s_root->d_op = &minix_dentry_operations;
 
         if (!(s->s_flags & MS_RDONLY)) {
-                ms->s_state &= ~MINIX_VALID_FS;
+                if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */
+                        ms->s_state &= ~MINIX_VALID_FS;
                 mark_buffer_dirty(bh);
         }
         if (!(sbi->s_mount_state & MINIX_VALID_FS))
@@ -278,8 +303,8 @@ out_illegal_sb:
 
 out_no_fs:
         if (!silent)
-                printk("VFS: Can't find a Minix or Minix V2 filesystem "
-                        "on device %s\n", s->s_id);
+                printk("VFS: Can't find a Minix filesystem V1 | V2 | V3 "
+                       "on device %s.\n", s->s_id);
 out_release:
         brelse(bh);
         goto out;
@@ -344,7 +369,7 @@ static const struct address_space_operations minix_aops = {
         .bmap = minix_bmap
 };
 
-static struct inode_operations minix_symlink_inode_operations = {
+static const struct inode_operations minix_symlink_inode_operations = {
         .readlink       = generic_readlink,
         .follow_link    = page_follow_link_light,
         .put_link       = page_put_link,
@@ -537,12 +562,14 @@ int minix_sync_inode(struct inode * inode)
 
 int minix_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 {
+        struct inode *dir = dentry->d_parent->d_inode;
+        struct super_block *sb = dir->i_sb;
         generic_fillattr(dentry->d_inode, stat);
         if (INODE_VERSION(dentry->d_inode) == MINIX_V1)
-                stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size);
+                stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb);
         else
-                stat->blocks = (BLOCK_SIZE / 512) * V2_minix_blocks(stat->size);
-        stat->blksize = BLOCK_SIZE;
+                stat->blocks = (sb->s_blocksize / 512) * V2_minix_blocks(stat->size, sb);
+        stat->blksize = sb->s_blocksize;
         return 0;
 }