#include <linux/parser.h>
#include <linux/init.h>
#include <linux/statfs.h>
+#include <linux/magic.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/bitmap.h>
+#include <linux/slab.h>
/* Mark the filesystem dirty, so that chkdsk checks it when os/2 booted */
}
/* 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");
} 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");
- if (buf) kfree(buf);
hpfs_sb(s)->sb_was_error = 1;
}
static void hpfs_put_super(struct super_block *s)
{
struct hpfs_sb_info *sbi = hpfs_sb(s);
- if (sbi->sb_cp_table) kfree(sbi->sb_cp_table);
- if (sbi->sb_bmp_dir) kfree(sbi->sb_bmp_dir);
+
+ lock_kernel();
+
+ kfree(sbi->sb_cp_table);
+ kfree(sbi->sb_bmp_dir);
unmark_dirty(s);
s->s_fs_info = NULL;
kfree(sbi);
+
+ unlock_kernel();
}
unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno)
{
struct quad_buffer_head qbh;
- unsigned *bits;
- unsigned i, count;
- if (!(bits = hpfs_map_4sectors(s, secno, &qbh, 4))) return 0;
- count = 0;
- for (i = 0; i < 2048 / sizeof(unsigned); i++) {
- unsigned b;
- if (!bits[i]) continue;
- for (b = bits[i]; b; b>>=1) count += b & 1;
- }
+ unsigned long *bits;
+ unsigned count;
+
+ bits = hpfs_map_4sectors(s, secno, &qbh, 4);
+ if (!bits)
+ return 0;
+ count = bitmap_weight(bits, 2048 * BITS_PER_BYTE);
hpfs_brelse4(&qbh);
return count;
}
return count;
}
-static int hpfs_statfs(struct super_block *s, struct kstatfs *buf)
+static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
+ struct super_block *s = dentry->d_sb;
struct hpfs_sb_info *sbi = hpfs_sb(s);
+ u64 id = huge_encode_dev(s->s_bdev->bd_dev);
lock_kernel();
/*if (sbi->sb_n_free == -1) {*/
buf->f_bavail = sbi->sb_n_free;
buf->f_files = sbi->sb_dirband_size / 4;
buf->f_ffree = sbi->sb_n_free_dnodes;
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = 254;
unlock_kernel();
return 0;
}
-static kmem_cache_t * hpfs_inode_cachep;
+static struct kmem_cache * hpfs_inode_cachep;
static struct inode *hpfs_alloc_inode(struct super_block *sb)
{
struct hpfs_inode_info *ei;
- ei = (struct hpfs_inode_info *)kmem_cache_alloc(hpfs_inode_cachep, SLAB_NOFS);
+ ei = (struct hpfs_inode_info *)kmem_cache_alloc(hpfs_inode_cachep, GFP_NOFS);
if (!ei)
return NULL;
ei->vfs_inode.i_version = 1;
kmem_cache_free(hpfs_inode_cachep, hpfs_i(inode));
}
-static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+static void init_once(void *foo)
{
struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo;
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR) {
- init_MUTEX(&ei->i_sem);
- init_MUTEX(&ei->i_parent);
- inode_init_once(&ei->vfs_inode);
- }
+ mutex_init(&ei->i_mutex);
+ mutex_init(&ei->i_parent_mutex);
+ inode_init_once(&ei->vfs_inode);
}
-
+
static int init_inodecache(void)
{
hpfs_inode_cachep = kmem_cache_create("hpfs_inode_cache",
sizeof(struct hpfs_inode_info),
- 0, SLAB_RECLAIM_ACCOUNT,
- init_once, NULL);
+ 0, (SLAB_RECLAIM_ACCOUNT|
+ SLAB_MEM_SPREAD),
+ init_once);
if (hpfs_inode_cachep == NULL)
return -ENOMEM;
return 0;
static void destroy_inodecache(void)
{
- if (kmem_cache_destroy(hpfs_inode_cachep))
- printk(KERN_INFO "hpfs_inode_cache: not all structures were freed\n");
+ kmem_cache_destroy(hpfs_inode_cachep);
}
/*
Opt_timeshift, Opt_err,
};
-static match_table_t tokens = {
+static const match_table_t tokens = {
{Opt_help, "help"},
{Opt_uid, "uid=%u"},
{Opt_gid, "gid=%u"},
int lowercase, conv, eas, chk, errs, chkdsk, timeshift;
int o;
struct hpfs_sb_info *sbi = hpfs_sb(s);
+ char *new_opts = kstrdup(data, GFP_KERNEL);
*flags |= MS_NOATIME;
+ lock_kernel();
+ lock_super(s);
uid = sbi->sb_uid; gid = sbi->sb_gid;
umask = 0777 & ~sbi->sb_mode;
lowercase = sbi->sb_lowercase; conv = sbi->sb_conv;
if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &conv,
&eas, &chk, &errs, &chkdsk, ×hift))) {
printk("HPFS: bad mount options.\n");
- return 1;
+ goto out_err;
}
if (o == 2) {
hpfs_help();
- return 1;
+ goto out_err;
}
if (timeshift != sbi->sb_timeshift) {
printk("HPFS: timeshift can't be changed using remount.\n");
- return 1;
+ goto out_err;
}
unmark_dirty(s);
if (!(*flags & MS_RDONLY)) mark_dirty(s);
+ replace_mount_options(s, new_opts);
+
+ unlock_super(s);
+ unlock_kernel();
return 0;
+
+out_err:
+ unlock_super(s);
+ unlock_kernel();
+ kfree(new_opts);
+ return -EINVAL;
}
/* Super operations */
-static struct super_operations hpfs_sops =
+static const struct super_operations hpfs_sops =
{
.alloc_inode = hpfs_alloc_inode,
.destroy_inode = hpfs_destroy_inode,
.put_super = hpfs_put_super,
.statfs = hpfs_statfs,
.remount_fs = hpfs_remount_fs,
+ .show_options = generic_show_options,
};
static int hpfs_fill_super(struct super_block *s, void *options, int silent)
int o;
- sbi = kmalloc(sizeof(*sbi), GFP_KERNEL);
+ save_mount_options(s, options);
+
+ sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
s->s_fs_info = sbi;
- memset(sbi, 0, sizeof(*sbi));
sbi->sb_bmp_dir = NULL;
sbi->sb_cp_table = NULL;
init_MUTEX(&sbi->hpfs_creation_de);
- uid = current->uid;
- gid = current->gid;
- umask = current->fs->umask;
+ uid = current_uid();
+ gid = current_gid();
+ umask = current_umask();
lowercase = 0;
conv = CONV_BINARY;
eas = 2;
bail2: brelse(bh0);
bail1:
bail0:
- if (sbi->sb_bmp_dir) kfree(sbi->sb_bmp_dir);
- if (sbi->sb_cp_table) kfree(sbi->sb_cp_table);
+ kfree(sbi->sb_bmp_dir);
+ kfree(sbi->sb_cp_table);
s->s_fs_info = NULL;
kfree(sbi);
return -EINVAL;
}
-static struct super_block *hpfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int hpfs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, hpfs_fill_super);
+ return get_sb_bdev(fs_type, flags, dev_name, data, hpfs_fill_super,
+ mnt);
}
static struct file_system_type hpfs_fs_type = {
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff