[PATCH] hpfs: bring hpfs_error() into shape

 - switch to error message buffer in .bss
 - missing va_end() (htf it worked before?)
 - use vsnprintf()
 - rename variables to understandable "fmt", "args".
 - "const char *fmt", yes.
 - add __attribute__((format ...

Still, put that coffee down before reading more.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 32ab51e..1c07aa8 100644 (file)
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -317,7 +317,8 @@ static inline struct hpfs_sb_info *hpfs_sb(struct super_block *sb)
 
 /* super.c */
 
-void hpfs_error(struct super_block *, char *, ...);
+void hpfs_error(struct super_block *, const char *, ...)
+       __attribute__((format (printf, 2, 3)));
 int hpfs_stop_cycles(struct super_block *, int, int *, int *, char *);
 unsigned hpfs_count_one_bitmap(struct super_block *, secno);
 

diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 34d68e2..d4abc1a 100644 (file)
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -46,21 +46,17 @@ static void unmark_dirty(struct super_block *s)
 }
 
 /* Filesystem error... */
+static char err_buf[1024];
 
-#define ERR_BUF_SIZE 1024
-
-void hpfs_error(struct super_block *s, char *m,...)
+void hpfs_error(struct super_block *s, const char *fmt, ...)
 {
-       char *buf;
-       va_list l;
-       va_start(l, m);
-       if (!(buf = kmalloc(ERR_BUF_SIZE, GFP_KERNEL)))
-               printk("HPFS: No memory for error message '%s'\n",m);
-       else if (vsprintf(buf, m, l) >= ERR_BUF_SIZE)
-               printk("HPFS: Grrrr... Kernel memory corrupted ... going on, but it'll crash very soon :-(\n");
-       printk("HPFS: filesystem error: ");
-       if (buf) printk("%s", buf);
-       else printk("%s\n",m);
+       va_list args;
+
+       va_start(args, fmt);
+       vsnprintf(err_buf, sizeof(err_buf), fmt, args);
+       va_end(args);
+
+       printk("HPFS: filesystem error: %s", err_buf);
        if (!hpfs_sb(s)->sb_was_error) {
                if (hpfs_sb(s)->sb_err == 2) {
                        printk("; crashing the system because you wanted it\n");
@@ -76,7 +72,6 @@ void hpfs_error(struct super_block *s, char *m,...)
                } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n");
                else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n");
        } else printk("\n");
-       kfree(buf);
        hpfs_sb(s)->sb_was_error = 1;
 }