fs/adfs: clean up error message printing

Overhaul our message printing:

- provide a consistent way to print messages:
  - filesystem corruption should be reported via adfs_error()
  - everything else should use adfs_msg()
- clean up the error message printing when mounting a filesystem
- fix the messages printed by the big directory format code to only
  use adfs_error() when there is filesystem corruption, otherwise
  use adfs_msg().

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/adfs/adfs.h

@@ -142,6 +142,7 @@ __printf(3, 4)
 void __adfs_error(struct super_block *sb, const char *function,
 		  const char *fmt, ...);
 #define adfs_error(sb, fmt...) __adfs_error(sb, __func__, fmt)
+void adfs_msg(struct super_block *sb, const char *pfx, const char *fmt, ...);
 
 /* super.c */
 

fs/adfs/dir_fplus.c

@@ -39,17 +39,15 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
 	h = (struct adfs_bigdirheader *)dir->bh_fplus[0]->b_data;
 	size = le32_to_cpu(h->bigdirsize);
 	if (size != sz) {
-		printk(KERN_WARNING "adfs: adfs_fplus_read:"
+		adfs_msg(sb, KERN_WARNING,
-					" directory header size %X\n"
+			 "directory header size %X does not match directory size %X",
-					" does not match directory size %X\n",
+			 size, sz);
-					size, sz);
 	}
 
 	if (h->bigdirversion[0] != 0 || h->bigdirversion[1] != 0 ||
 	    h->bigdirversion[2] != 0 || size & 2047 ||
 	    h->bigdirstartname != cpu_to_le32(BIGDIRSTARTNAME)) {
-		printk(KERN_WARNING "adfs: dir object %X has"
+		adfs_error(sb, "dir %06x has malformed header", id);
-					" malformed dir header\n", id);
 		goto out;
 	}
 
@@ -60,9 +58,10 @@ 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) {
+			adfs_msg(sb, KERN_ERR,
+				 "not enough memory for dir object %X (%d blocks)",
+				 id, size);
 			ret = -ENOMEM;
-			adfs_error(sb, "not enough memory for"
-					" dir object %X (%d blocks)", id, size);
 			goto out;
 		}
 		dir->bh_fplus = bh_fplus;
@@ -93,8 +92,7 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
 	if (t->bigdirendname != cpu_to_le32(BIGDIRENDNAME) ||
 	    t->bigdirendmasseq != h->startmasseq ||
 	    t->reserved[0] != 0 || t->reserved[1] != 0) {
-		printk(KERN_WARNING "adfs: dir object %X has "
+		adfs_error(sb, "dir %06x has malformed tail", id);
-					"malformed dir end\n", id);
 		goto out;
 	}
 

fs/adfs/super.c

@@ -38,6 +38,18 @@ void __adfs_error(struct super_block *sb, const char *function, const char *fmt,
 	va_end(args);
 }
 
+void adfs_msg(struct super_block *sb, const char *pfx, const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+
+	va_start(args, fmt);
+	vaf.fmt = fmt;
+	vaf.va = &args;
+	printk("%sADFS-fs (%s): %pV\n", pfx, sb->s_id, &vaf);
+	va_end(args);
+}
+
 static int adfs_checkdiscrecord(struct adfs_discrecord *dr)
 {
 	int i;
@@ -203,8 +215,9 @@ static int parse_options(struct super_block *sb, char *options)
 			asb->s_ftsuffix = option;
 			break;
 		default:
-			printk("ADFS-fs: unrecognised mount option \"%s\" "
+			adfs_msg(sb, KERN_ERR,
-					"or missing value\n", p);
+				 "unrecognised mount option \"%s\" or missing value",
+				 p);
 			return -EINVAL;
 		}
 	}
@@ -377,7 +390,7 @@ 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");
+		adfs_msg(sb, KERN_ERR, "error: unable to read superblock");
 		ret = -EIO;
 		goto error;
 	}
@@ -385,11 +398,8 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
 	b_data = bh->b_data + (ADFS_DISCRECORD % BLOCK_SIZE);
 
 	if (adfs_checkbblk(b_data)) {
-		if (!silent)
-			printk("VFS: Can't find an adfs filesystem on dev "
-				"%s.\n", sb->s_id);
 		ret = -EINVAL;
-		goto error_free_bh;
+		goto error_badfs;
 	}
 
 	dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
@@ -398,33 +408,31 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
 	 * Do some sanity checks on the ADFS disc record
 	 */
 	if (adfs_checkdiscrecord(dr)) {
-		if (!silent)
-			printk("VPS: Can't find an adfs filesystem on dev "
-				"%s.\n", sb->s_id);
 		ret = -EINVAL;
-		goto error_free_bh;
+		goto error_badfs;
 	}
 
 	brelse(bh);
 	if (sb_set_blocksize(sb, 1 << dr->log2secsize)) {
 		bh = sb_bread(sb, ADFS_DISCRECORD / sb->s_blocksize);
 		if (!bh) {
-			adfs_error(sb, "couldn't read superblock on "
+			adfs_msg(sb, KERN_ERR,
-				"2nd try.");
+				 "error: 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!");
+			adfs_msg(sb, KERN_ERR,
+				 "error: disc record mismatch, very weird!");
 			ret = -EINVAL;
 			goto error_free_bh;
 		}
 		dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
 	} else {
 		if (!silent)
-			printk(KERN_ERR "VFS: Unsupported blocksize on dev "
+			adfs_msg(sb, KERN_ERR,
-				"%s.\n", sb->s_id);
+				 "error: unsupported blocksize");
 		ret = -EINVAL;
 		goto error;
 	}
@@ -497,6 +505,11 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
 	}
 	return 0;
 
+error_badfs:
+	if (!silent)
+		adfs_msg(sb, KERN_ERR,
+			 "error: can't find an ADFS filesystem on dev %s.",
+			 sb->s_id);
 error_free_bh:
 	brelse(bh);
 error: