adfs: return correct return values

Fix the wrong values returned by various functions such as EIO and ENOMEM.

Signed-off-by: Sanidhya Kashyap <sanidhya.gatech@gmail.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Joe Perches <joe@perches.com>
Cc: Taesoo kim <taesoo@gatech.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/adfs/dir_fplus.c b/fs/adfs/dir_fplus.c
index f2ba88a..82d14cd 100644 (file)
--- a/fs/adfs/dir_fplus.c
+++ b/fs/adfs/dir_fplus.c
@@ -61,6 +61,7 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
                        kcalloc(size, sizeof(struct buffer_head *),
                                GFP_KERNEL);
                if (!bh_fplus) {
+                       ret = -ENOMEM;
                        adfs_error(sb, "not enough memory for"
                                        " dir object %X (%d blocks)", id, size);
                        goto out;

diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 9852bdf..a19c31d 100644 (file)
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -316,7 +316,7 @@ static struct adfs_discmap *adfs_read_map(struct super_block *sb, struct adfs_di
        dm = kmalloc(nzones * sizeof(*dm), GFP_KERNEL);
        if (dm == NULL) {
                adfs_error(sb, "not enough memory");
-               return NULL;
+               return ERR_PTR(-ENOMEM);
        }
 
        for (zone = 0; zone < nzones; zone++, map_addr++) {
@@ -349,7 +349,7 @@ error_free:
                brelse(dm[zone].dm_bh);
 
        kfree(dm);
-       return NULL;
+       return ERR_PTR(-EIO);
 }
 
 static inline unsigned long adfs_discsize(struct adfs_discrecord *dr, int block_bits)
@@ -370,6 +370,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
        unsigned char *b_data;
        struct adfs_sb_info *asb;
        struct inode *root;
+       int ret = -EINVAL;
 
        sb->s_flags |= MS_NODIRATIME;
 
@@ -391,6 +392,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
        sb_set_blocksize(sb, BLOCK_SIZE);
        if (!(bh = sb_bread(sb, ADFS_DISCRECORD / BLOCK_SIZE))) {
                adfs_error(sb, "unable to read superblock");
+               ret = -EIO;
                goto error;
        }
 
@@ -400,6 +402,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
                if (!silent)
                        printk("VFS: Can't find an adfs filesystem on dev "
                                "%s.\n", sb->s_id);
+               ret = -EINVAL;
                goto error_free_bh;
        }
 
@@ -412,6 +415,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
                if (!silent)
                        printk("VPS: Can't find an adfs filesystem on dev "
                                "%s.\n", sb->s_id);
+               ret = -EINVAL;
                goto error_free_bh;
        }
 
@@ -421,11 +425,13 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
                if (!bh) {
                        adfs_error(sb, "couldn't read superblock on "
                                "2nd try.");
+                       ret = -EIO;
                        goto error;
                }
                b_data = bh->b_data + (ADFS_DISCRECORD % sb->s_blocksize);
                if (adfs_checkbblk(b_data)) {
                        adfs_error(sb, "disc record mismatch, very weird!");
+                       ret = -EINVAL;
                        goto error_free_bh;
                }
                dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
@@ -433,6 +439,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
                if (!silent)
                        printk(KERN_ERR "VFS: Unsupported blocksize on dev "
                                "%s.\n", sb->s_id);
+               ret = -EINVAL;
                goto error;
        }
 
@@ -447,10 +454,12 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
        asb->s_size             = adfs_discsize(dr, sb->s_blocksize_bits);
        asb->s_version          = dr->format_version;
        asb->s_log2sharesize    = dr->log2sharesize;
-       
+
        asb->s_map = adfs_read_map(sb, dr);
-       if (!asb->s_map)
+       if (IS_ERR(asb->s_map)) {
+               ret =  PTR_ERR(asb->s_map);
                goto error_free_bh;
+       }
 
        brelse(bh);
 
@@ -499,6 +508,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
                        brelse(asb->s_map[i].dm_bh);
                kfree(asb->s_map);
                adfs_error(sb, "get root inode failed\n");
+               ret = -EIO;
                goto error;
        }
        return 0;
@@ -508,7 +518,7 @@ error_free_bh:
 error:
        sb->s_fs_info = NULL;
        kfree(asb);
-       return -EINVAL;
+       return ret;
 }
 
 static struct dentry *adfs_mount(struct file_system_type *fs_type,