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[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry

Browse Source 
Give the statfs superblock operation a dentry pointer rather than a superblock
pointer.

This complements the get_sb() patch.  That reduced the significance of
sb->s_root, allowing NFS to place a fake root there.  However, NFS does
require a dentry to use as a target for the statfs operation.  This permits
the root in the vfsmount to be used instead.

linux/mount.h has been added where necessary to make allyesconfig build
successfully.

Interest has also been expressed for use with the FUSE and XFS filesystems.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Nathan Scott <nathans@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Howells 2006-06-23 02:02:58 -07:00 committed by Linus Torvalds
parent 454e2398be
commit 726c334223
60 changed files with 175 additions and 144 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/filesystems/Locking
View File

@ -99,7 +99,7 @@ prototypes:
int (*sync_fs)(struct super_block *sb, int wait);
void (*write_super_lockfs) (struct super_block *);
void (*unlockfs) (struct super_block *);
int (*statfs) (struct super_block *, struct kstatfs *);
int (*statfs) (struct dentry *, struct kstatfs *);
int (*remount_fs) (struct super_block *, int *, char *);
void (*clear_inode) (struct inode *);
void (*umount_begin) (struct super_block *);

2
Documentation/filesystems/vfs.txt
View File

@ -211,7 +211,7 @@ struct super_operations {
int (*sync_fs)(struct super_block *sb, int wait);
void (*write_super_lockfs) (struct super_block *);
void (*unlockfs) (struct super_block *);
int (*statfs) (struct super_block *, struct kstatfs *);
int (*statfs) (struct dentry *, struct kstatfs *);
int (*remount_fs) (struct super_block *, int *, char *);
void (*clear_inode) (struct inode *);
void (*umount_begin) (struct super_block *);

2
arch/alpha/kernel/osf_sys.c
View File

@ -244,7 +244,7 @@ do_osf_statfs(struct dentry * dentry, struct osf_statfs __user *buffer,
unsigned long bufsiz)
{
struct kstatfs linux_stat;
int error = vfs_statfs(dentry->d_inode->i_sb, &linux_stat);
int error = vfs_statfs(dentry, &linux_stat);
if (!error)
error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
return error;

12
arch/mips/kernel/sysirix.c
View File

@ -694,7 +694,7 @@ asmlinkage int irix_statfs(const char __user *path,
if (error)
goto out;
error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
error = vfs_statfs(nd.dentry, &kbuf);
if (error)
goto dput_and_out;
@ -732,7 +732,7 @@ asmlinkage int irix_fstatfs(unsigned int fd, struct irix_statfs __user *buf)
goto out;
}
error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
error = vfs_statfs(file->f_dentry, &kbuf);
if (error)
goto out_f;
@ -1360,7 +1360,7 @@ asmlinkage int irix_statvfs(char __user *fname, struct irix_statvfs __user *buf)
error = user_path_walk(fname, &nd);
if (error)
goto out;
error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
error = vfs_statfs(nd.dentry, &kbuf);
if (error)
goto dput_and_out;
@ -1406,7 +1406,7 @@ asmlinkage int irix_fstatvfs(int fd, struct irix_statvfs __user *buf)
error = -EBADF;
goto out;
}
error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
error = vfs_statfs(file->f_dentry, &kbuf);
if (error)
goto out_f;
@ -1611,7 +1611,7 @@ asmlinkage int irix_statvfs64(char __user *fname, struct irix_statvfs64 __user *
error = user_path_walk(fname, &nd);
if (error)
goto out;
error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
error = vfs_statfs(nd.dentry, &kbuf);
if (error)
goto dput_and_out;
@ -1658,7 +1658,7 @@ asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs __user *buf)
error = -EBADF;
goto out;
}
error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
error = vfs_statfs(file->f_dentry, &kbuf);
if (error)
goto out_f;

10
arch/parisc/hpux/sys_hpux.c
View File

@ -145,7 +145,7 @@ static int hpux_ustat(dev_t dev, struct hpux_ustat __user *ubuf)
s = user_get_super(dev);
if (s == NULL)
goto out;
err = vfs_statfs(s, &sbuf);
err = vfs_statfs(s->s_root, &sbuf);
drop_super(s);
if (err)
goto out;
@ -186,12 +186,12 @@ struct hpux_statfs {
int16_t f_pad;
};
static int vfs_statfs_hpux(struct super_block *sb, struct hpux_statfs *buf)
static int vfs_statfs_hpux(struct dentry *dentry, struct hpux_statfs *buf)
{
struct kstatfs st;
int retval;
retval = vfs_statfs(sb, &st);
retval = vfs_statfs(dentry, &st);
if (retval)
return retval;
@ -219,7 +219,7 @@ asmlinkage long hpux_statfs(const char __user *path,
error = user_path_walk(path, &nd);
if (!error) {
struct hpux_statfs tmp;
error = vfs_statfs_hpux(nd.dentry->d_inode->i_sb, &tmp);
error = vfs_statfs_hpux(nd.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_release(&nd);
@ -237,7 +237,7 @@ asmlinkage long hpux_fstatfs(unsigned int fd, struct hpux_statfs __user * buf)
file = fget(fd);
if (!file)
goto out;
error = vfs_statfs_hpux(file->f_dentry->d_inode->i_sb, &tmp);
error = vfs_statfs_hpux(file->f_dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
fput(file);

4
arch/sparc64/solaris/fs.c
View File

@ -356,7 +356,7 @@ static int report_statvfs(struct vfsmount *mnt, struct inode *inode, u32 buf)
int error;
struct sol_statvfs __user *ss = A(buf);
error = vfs_statfs(mnt->mnt_sb, &s);
error = vfs_statfs(mnt->mnt_root, &s);
if (!error) {
const char *p = mnt->mnt_sb->s_type->name;
int i = 0;
@ -392,7 +392,7 @@ static int report_statvfs64(struct vfsmount *mnt, struct inode *inode, u32 buf)
int error;
struct sol_statvfs64 __user *ss = A(buf);
error = vfs_statfs(mnt->mnt_sb, &s);
error = vfs_statfs(mnt->mnt_root, &s);
if (!error) {
const char *p = mnt->mnt_sb->s_type->name;
int i = 0;

8
fs/adfs/super.c
View File

@ -196,17 +196,17 @@ static int adfs_remount(struct super_block *sb, int *flags, char *data)
return parse_options(sb, data);
}
static int adfs_statfs(struct super_block *sb, struct kstatfs *buf)
static int adfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct adfs_sb_info *asb = ADFS_SB(sb);
struct adfs_sb_info *asb = ADFS_SB(dentry->d_sb);
buf->f_type = ADFS_SUPER_MAGIC;
buf->f_namelen = asb->s_namelen;
buf->f_bsize = sb->s_blocksize;
buf->f_bsize = dentry->d_sb->s_blocksize;
buf->f_blocks = asb->s_size;
buf->f_files = asb->s_ids_per_zone * asb->s_map_size;
buf->f_bavail =
buf->f_bfree = adfs_map_free(sb);
buf->f_bfree = adfs_map_free(dentry->d_sb);
buf->f_ffree = (long)(buf->f_bfree * buf->f_files) / (long)buf->f_blocks;
return 0;

5
fs/affs/super.c
View File

@ -18,7 +18,7 @@
extern struct timezone sys_tz;
static int affs_statfs(struct super_block *sb, struct kstatfs *buf);
static int affs_statfs(struct dentry *dentry, struct kstatfs *buf);
static int affs_remount (struct super_block *sb, int *flags, char *data);
static void
@ -508,8 +508,9 @@ affs_remount(struct super_block *sb, int *flags, char *data)
}
static int
affs_statfs(struct super_block *sb, struct kstatfs *buf)
affs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
int free;
pr_debug("AFFS: statfs() partsize=%d, reserved=%d\n",AFFS_SB(sb)->s_partition_size,

5
fs/befs/linuxvfs.c
View File

@ -49,7 +49,7 @@ static int befs_nls2utf(struct super_block *sb, const char *in, int in_len,
char **out, int *out_len);
static void befs_put_super(struct super_block *);
static int befs_remount(struct super_block *, int *, char *);
static int befs_statfs(struct super_block *, struct kstatfs *);
static int befs_statfs(struct dentry *, struct kstatfs *);
static int parse_options(char *, befs_mount_options *);
static const struct super_operations befs_sops = {
@ -880,8 +880,9 @@ befs_remount(struct super_block *sb, int *flags, char *data)
}
static int
befs_statfs(struct super_block *sb, struct kstatfs *buf)
befs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
befs_debug(sb, "---> befs_statfs()");

3
fs/bfs/inode.c
View File

@ -203,8 +203,9 @@ static void bfs_put_super(struct super_block *s)
s->s_fs_info = NULL;
}
static int bfs_statfs(struct super_block *s, struct kstatfs *buf)
static int bfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *s = dentry->d_sb;
struct bfs_sb_info *info = BFS_SB(s);
u64 id = huge_encode_dev(s->s_bdev->bd_dev);
buf->f_type = BFS_MAGIC;

3
fs/cifs/cifsfs.c
View File

@ -166,8 +166,9 @@ cifs_put_super(struct super_block *sb)
}
static int
cifs_statfs(struct super_block *sb, struct kstatfs *buf)
cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
int xid;
int rc = -EOPNOTSUPP;
struct cifs_sb_info *cifs_sb;

6
fs/coda/inode.c
View File

@ -36,7 +36,7 @@
/* VFS super_block ops */
static void coda_clear_inode(struct inode *);
static void coda_put_super(struct super_block *);
static int coda_statfs(struct super_block *sb, struct kstatfs *buf);
static int coda_statfs(struct dentry *dentry, struct kstatfs *buf);
static kmem_cache_t * coda_inode_cachep;
@ -278,13 +278,13 @@ struct inode_operations coda_file_inode_operations = {
.setattr = coda_setattr,
};
static int coda_statfs(struct super_block *sb, struct kstatfs *buf)
static int coda_statfs(struct dentry *dentry, struct kstatfs *buf)
{
int error;
lock_kernel();
error = venus_statfs(sb, buf);
error = venus_statfs(dentry, buf);
unlock_kernel();

4
fs/coda/upcall.c
View File

@ -611,7 +611,7 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
return error;
}
int venus_statfs(struct super_block *sb, struct kstatfs *sfs)
int venus_statfs(struct dentry *dentry, struct kstatfs *sfs)
{
union inputArgs *inp;
union outputArgs *outp;
@ -620,7 +620,7 @@ int venus_statfs(struct super_block *sb, struct kstatfs *sfs)
insize = max_t(unsigned int, INSIZE(statfs), OUTSIZE(statfs));
UPARG(CODA_STATFS);
error = coda_upcall(coda_sbp(sb), insize, &outsize, inp);
error = coda_upcall(coda_sbp(dentry->d_sb), insize, &outsize, inp);
if (!error) {
sfs->f_blocks = outp->coda_statfs.stat.f_blocks;

8
fs/compat.c
View File

@ -197,7 +197,7 @@ asmlinkage long compat_sys_statfs(const char __user *path, struct compat_statfs
error = user_path_walk(path, &nd);
if (!error) {
struct kstatfs tmp;
error = vfs_statfs(nd.dentry->d_inode->i_sb, &tmp);
error = vfs_statfs(nd.dentry, &tmp);
if (!error)
error = put_compat_statfs(buf, &tmp);
path_release(&nd);
@ -215,7 +215,7 @@ asmlinkage long compat_sys_fstatfs(unsigned int fd, struct compat_statfs __user
file = fget(fd);
if (!file)
goto out;
error = vfs_statfs(file->f_dentry->d_inode->i_sb, &tmp);
error = vfs_statfs(file->f_dentry, &tmp);
if (!error)
error = put_compat_statfs(buf, &tmp);
fput(file);
@ -265,7 +265,7 @@ asmlinkage long compat_sys_statfs64(const char __user *path, compat_size_t sz, s
error = user_path_walk(path, &nd);
if (!error) {
struct kstatfs tmp;
error = vfs_statfs(nd.dentry->d_inode->i_sb, &tmp);
error = vfs_statfs(nd.dentry, &tmp);
if (!error)
error = put_compat_statfs64(buf, &tmp);
path_release(&nd);
@ -286,7 +286,7 @@ asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct c
file = fget(fd);
if (!file)
goto out;
error = vfs_statfs(file->f_dentry->d_inode->i_sb, &tmp);
error = vfs_statfs(file->f_dentry, &tmp);
if (!error)
error = put_compat_statfs64(buf, &tmp);
fput(file);

4
fs/cramfs/inode.c
View File

@ -322,8 +322,10 @@ out:
return -EINVAL;
}
static int cramfs_statfs(struct super_block *sb, struct kstatfs *buf)
static int cramfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
buf->f_type = CRAMFS_MAGIC;
buf->f_bsize = PAGE_CACHE_SIZE;
buf->f_blocks = CRAMFS_SB(sb)->blocks;

6
fs/efs/super.c
View File

@ -15,7 +15,7 @@
#include <linux/buffer_head.h>
#include <linux/vfs.h>
static int efs_statfs(struct super_block *s, struct kstatfs *buf);
static int efs_statfs(struct dentry *dentry, struct kstatfs *buf);
static int efs_fill_super(struct super_block *s, void *d, int silent);
static int efs_get_sb(struct file_system_type *fs_type,
@ -322,8 +322,8 @@ out_no_fs:
return -EINVAL;
}
static int efs_statfs(struct super_block *s, struct kstatfs *buf) {
struct efs_sb_info *sb = SUPER_INFO(s);
static int efs_statfs(struct dentry *dentry, struct kstatfs *buf) {
struct efs_sb_info *sb = SUPER_INFO(dentry->d_sb);
buf->f_type = EFS_SUPER_MAGIC; /* efs magic number */
buf->f_bsize = EFS_BLOCKSIZE; /* blocksize */

5
fs/ext2/super.c
View File

@ -39,7 +39,7 @@
static void ext2_sync_super(struct super_block *sb,
struct ext2_super_block *es);
static int ext2_remount (struct super_block * sb, int * flags, char * data);
static int ext2_statfs (struct super_block * sb, struct kstatfs * buf);
static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf);
void ext2_error (struct super_block * sb, const char * function,
const char * fmt, ...)
@ -1038,8 +1038,9 @@ restore_opts:
return err;
}
static int ext2_statfs (struct super_block * sb, struct kstatfs * buf)
static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
{
struct super_block *sb = dentry->d_sb;
struct ext2_sb_info *sbi = EXT2_SB(sb);
unsigned long overhead;
int i;

5
fs/ext3/super.c
View File

@ -58,7 +58,7 @@ static int ext3_sync_fs(struct super_block *sb, int wait);
static const char *ext3_decode_error(struct super_block * sb, int errno,
char nbuf[16]);
static int ext3_remount (struct super_block * sb, int * flags, char * data);
static int ext3_statfs (struct super_block * sb, struct kstatfs * buf);
static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf);
static void ext3_unlockfs(struct super_block *sb);
static void ext3_write_super (struct super_block * sb);
static void ext3_write_super_lockfs(struct super_block *sb);
@ -2318,8 +2318,9 @@ restore_opts:
return err;
}
static int ext3_statfs (struct super_block * sb, struct kstatfs * buf)
static int ext3_statfs (struct dentry * dentry, struct kstatfs * buf)
{
struct super_block *sb = dentry->d_sb;
struct ext3_sb_info *sbi = EXT3_SB(sb);
struct ext3_super_block *es = sbi->s_es;
unsigned long overhead;

8
fs/fat/inode.c
View File

@ -539,18 +539,18 @@ static int fat_remount(struct super_block *sb, int *flags, char *data)
return 0;
}
static int fat_statfs(struct super_block *sb, struct kstatfs *buf)
static int fat_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct msdos_sb_info *sbi = MSDOS_SB(sb);
struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);
/* If the count of free cluster is still unknown, counts it here. */
if (sbi->free_clusters == -1) {
int err = fat_count_free_clusters(sb);
int err = fat_count_free_clusters(dentry->d_sb);
if (err)
return err;
}
buf->f_type = sb->s_magic;
buf->f_type = dentry->d_sb->s_magic;
buf->f_bsize = sbi->cluster_size;
buf->f_blocks = sbi->max_cluster - FAT_START_ENT;
buf->f_bfree = sbi->free_clusters;

13
fs/freevxfs/vxfs_super.c
View File

@ -40,6 +40,7 @@
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/vfs.h>
#include <linux/mount.h>
#include "vxfs.h"
#include "vxfs_extern.h"
@ -55,7 +56,7 @@ MODULE_ALIAS("vxfs"); /* makes mount -t vxfs autoload the module */
static void vxfs_put_super(struct super_block *);
static int vxfs_statfs(struct super_block *, struct kstatfs *);
static int vxfs_statfs(struct dentry *, struct kstatfs *);
static int vxfs_remount(struct super_block *, int *, char *);
static struct super_operations vxfs_super_ops = {
@ -90,12 +91,12 @@ vxfs_put_super(struct super_block *sbp)
/**
* vxfs_statfs - get filesystem information
* @sbp: VFS superblock
* @dentry: VFS dentry to locate superblock
* @bufp: output buffer
*
* Description:
* vxfs_statfs fills the statfs buffer @bufp with information
* about the filesystem described by @sbp.
* about the filesystem described by @dentry.
*
* Returns:
* Zero.
@ -107,12 +108,12 @@ vxfs_put_super(struct super_block *sbp)
* This is everything but complete...
*/
static int
vxfs_statfs(struct super_block *sbp, struct kstatfs *bufp)
vxfs_statfs(struct dentry *dentry, struct kstatfs *bufp)
{
struct vxfs_sb_info *infp = VXFS_SBI(sbp);
struct vxfs_sb_info *infp = VXFS_SBI(dentry->d_sb);
bufp->f_type = VXFS_SUPER_MAGIC;
bufp->f_bsize = sbp->s_blocksize;
bufp->f_bsize = dentry->d_sb->s_blocksize;
bufp->f_blocks = infp->vsi_raw->vs_dsize;
bufp->f_bfree = infp->vsi_raw->vs_free;
bufp->f_bavail = 0;

3
fs/fuse/inode.c
View File

@ -236,8 +236,9 @@ static void convert_fuse_statfs(struct kstatfs *stbuf, struct fuse_kstatfs *attr
/* fsid is left zero */
}
static int fuse_statfs(struct super_block *sb, struct kstatfs *buf)
static int fuse_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct fuse_req *req;
struct fuse_statfs_out outarg;

4
fs/hfs/super.c
View File

@ -80,8 +80,10 @@ static void hfs_put_super(struct super_block *sb)
*
* changed f_files/f_ffree to reflect the fs_ablock/free_ablocks.
*/
static int hfs_statfs(struct super_block *sb, struct kstatfs *buf)
static int hfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
buf->f_type = HFS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = (u32)HFS_SB(sb)->fs_ablocks * HFS_SB(sb)->fs_div;

4
fs/hfsplus/super.c
View File

@ -212,8 +212,10 @@ static void hfsplus_put_super(struct super_block *sb)
sb->s_fs_info = NULL;
}
static int hfsplus_statfs(struct super_block *sb, struct kstatfs *buf)
static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
buf->f_type = HFSPLUS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = HFSPLUS_SB(sb).total_blocks << HFSPLUS_SB(sb).fs_shift;

4
fs/hostfs/hostfs_kern.c
View File

@ -239,7 +239,7 @@ static int read_inode(struct inode *ino)
return(err);
}
int hostfs_statfs(struct super_block *sb, struct kstatfs *sf)
int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf)
{
/* do_statfs uses struct statfs64 internally, but the linux kernel
* struct statfs still has 32-bit versions for most of these fields,
@ -252,7 +252,7 @@ int hostfs_statfs(struct super_block *sb, struct kstatfs *sf)
long long f_files;
long long f_ffree;
err = do_statfs(HOSTFS_I(sb->s_root->d_inode)->host_filename,
err = do_statfs(HOSTFS_I(dentry->d_sb->s_root->d_inode)->host_filename,
&sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files,
&f_ffree, &sf->f_fsid, sizeof(sf->f_fsid),
&sf->f_namelen, sf->f_spare);

3
fs/hpfs/super.c
View File

@ -135,8 +135,9 @@ static unsigned count_bitmaps(struct super_block *s)
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);
lock_kernel();

2
fs/hppfs/hppfs_kern.c
View File

@ -616,7 +616,7 @@ static const struct file_operations hppfs_dir_fops = {
.fsync = hppfs_fsync,
};
static int hppfs_statfs(struct super_block *sb, struct kstatfs *sf)
static int hppfs_statfs(struct dentry *dentry, struct kstatfs *sf)
{
sf->f_blocks = 0;
sf->f_bfree = 0;

4
fs/hugetlbfs/inode.c
View File

@ -467,9 +467,9 @@ static int hugetlbfs_set_page_dirty(struct page *page)
return 0;
}
static int hugetlbfs_statfs(struct super_block *sb, struct kstatfs *buf)
static int hugetlbfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(sb);
struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);
buf->f_type = HUGETLBFS_MAGIC;
buf->f_bsize = HPAGE_SIZE;

6
fs/isofs/inode.c
View File

@ -56,7 +56,7 @@ static void isofs_put_super(struct super_block *sb)
}
static void isofs_read_inode(struct inode *);
static int isofs_statfs (struct super_block *, struct kstatfs *);
static int isofs_statfs (struct dentry *, struct kstatfs *);
static kmem_cache_t *isofs_inode_cachep;
@ -901,8 +901,10 @@ out_freesbi:
return -EINVAL;
}
static int isofs_statfs (struct super_block *sb, struct kstatfs *buf)
static int isofs_statfs (struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
buf->f_type = ISOFS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = (ISOFS_SB(sb)->s_nzones

4
fs/jffs/inode-v23.c
View File

@ -377,9 +377,9 @@ jffs_new_inode(const struct inode * dir, struct jffs_raw_inode *raw_inode,
/* Get statistics of the file system. */
static int
jffs_statfs(struct super_block *sb, struct kstatfs *buf)
jffs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct jffs_control *c = (struct jffs_control *) sb->s_fs_info;
struct jffs_control *c = (struct jffs_control *) dentry->d_sb->s_fs_info;
struct jffs_fmcontrol *fmc;
lock_kernel();

4
fs/jffs2/fs.c
View File

@ -192,9 +192,9 @@ int jffs2_setattr(struct dentry *dentry, struct iattr *iattr)
return rc;
}
int jffs2_statfs(struct super_block *sb, struct kstatfs *buf)
int jffs2_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
struct jffs2_sb_info *c = JFFS2_SB_INFO(dentry->d_sb);
unsigned long avail;
buf->f_type = JFFS2_SUPER_MAGIC;

2
fs/jffs2/os-linux.h
View File

@ -175,7 +175,7 @@ void jffs2_clear_inode (struct inode *);
void jffs2_dirty_inode(struct inode *inode);
struct inode *jffs2_new_inode (struct inode *dir_i, int mode,
struct jffs2_raw_inode *ri);
int jffs2_statfs (struct super_block *, struct kstatfs *);
int jffs2_statfs (struct dentry *, struct kstatfs *);
void jffs2_write_super (struct super_block *);
int jffs2_remount_fs (struct super_block *, int *, char *);
int jffs2_do_fill_super(struct super_block *sb, void *data, int silent);

4
fs/jfs/super.c
View File

@ -139,9 +139,9 @@ static void jfs_destroy_inode(struct inode *inode)
kmem_cache_free(jfs_inode_cachep, ji);
}
static int jfs_statfs(struct super_block *sb, struct kstatfs *buf)
static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct jfs_sb_info *sbi = JFS_SBI(sb);
struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb);
s64 maxinodes;
struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap;

4
fs/libfs.c
View File

@ -20,9 +20,9 @@ int simple_getattr(struct vfsmount *mnt, struct dentry *dentry,
return 0;
}
int simple_statfs(struct super_block *sb, struct kstatfs *buf)
int simple_statfs(struct dentry *dentry, struct kstatfs *buf)
{
buf->f_type = sb->s_magic;
buf->f_type = dentry->d_sb->s_magic;
buf->f_bsize = PAGE_CACHE_SIZE;
buf->f_namelen = NAME_MAX;
return 0;

10
fs/minix/inode.c
View File

@ -19,7 +19,7 @@
static void minix_read_inode(struct inode * inode);
static int minix_write_inode(struct inode * inode, int wait);
static int minix_statfs(struct super_block *sb, struct kstatfs *buf);
static int minix_statfs(struct dentry *dentry, struct kstatfs *buf);
static int minix_remount (struct super_block * sb, int * flags, char * data);
static void minix_delete_inode(struct inode *inode)
@ -296,11 +296,11 @@ out_bad_sb:
return -EINVAL;
}
static int minix_statfs(struct super_block *sb, struct kstatfs *buf)
static int minix_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct minix_sb_info *sbi = minix_sb(sb);
buf->f_type = sb->s_magic;
buf->f_bsize = sb->s_blocksize;
struct minix_sb_info *sbi = minix_sb(dentry->d_sb);
buf->f_type = dentry->d_sb->s_magic;
buf->f_bsize = dentry->d_sb->s_blocksize;
buf->f_blocks = (sbi->s_nzones - sbi->s_firstdatazone) << sbi->s_log_zone_size;
buf->f_bfree = minix_count_free_blocks(sbi);
buf->f_bavail = buf->f_bfree;

5
fs/ncpfs/inode.c
View File

@ -39,7 +39,7 @@
static void ncp_delete_inode(struct inode *);
static void ncp_put_super(struct super_block *);
static int ncp_statfs(struct super_block *, struct kstatfs *);
static int ncp_statfs(struct dentry *, struct kstatfs *);
static kmem_cache_t * ncp_inode_cachep;
@ -724,13 +724,14 @@ static void ncp_put_super(struct super_block *sb)
kfree(server);
}
static int ncp_statfs(struct super_block *sb, struct kstatfs *buf)
static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct dentry* d;
struct inode* i;
struct ncp_inode_info* ni;
struct ncp_server* s;
struct ncp_volume_info vi;
struct super_block *sb = dentry->d_sb;
int err;
__u8 dh;

5
fs/nfs/inode.c
View File

@ -65,7 +65,7 @@ static int nfs_write_inode(struct inode *,int);
static void nfs_delete_inode(struct inode *);
static void nfs_clear_inode(struct inode *);
static void nfs_umount_begin(struct super_block *);
static int nfs_statfs(struct super_block *, struct kstatfs *);
static int nfs_statfs(struct dentry *, struct kstatfs *);
static int nfs_show_options(struct seq_file *, struct vfsmount *);
static int nfs_show_stats(struct seq_file *, struct vfsmount *);
static void nfs_zap_acl_cache(struct inode *);
@ -534,8 +534,9 @@ nfs_fill_super(struct super_block *sb, struct nfs_mount_data *data, int silent)
}
static int
nfs_statfs(struct super_block *sb, struct kstatfs *buf)
nfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct nfs_server *server = NFS_SB(sb);
unsigned char blockbits;
unsigned long blockres;

2
fs/nfsd/nfs4xdr.c
View File

@ -1310,7 +1310,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) ||
(bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
FATTR4_WORD1_SPACE_TOTAL))) {
status = vfs_statfs(dentry->d_inode->i_sb, &statfs);
status = vfs_statfs(dentry, &statfs);
if (status)
goto out_nfserr;
}

2
fs/nfsd/vfs.c
View File

@ -1737,7 +1737,7 @@ int
nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat)
{
int err = fh_verify(rqstp, fhp, 0, MAY_NOP);
if (!err && vfs_statfs(fhp->fh_dentry->d_inode->i_sb,stat))
if (!err && vfs_statfs(fhp->fh_dentry,stat))
err = nfserr_io;
return err;
}

7
fs/ntfs/super.c
View File

@ -2601,10 +2601,10 @@ static unsigned long __get_nr_free_mft_records(ntfs_volume *vol,
/**
* ntfs_statfs - return information about mounted NTFS volume
* @sb: super block of mounted volume
* @dentry: dentry from mounted volume
* @sfs: statfs structure in which to return the information
*
* Return information about the mounted NTFS volume @sb in the statfs structure
* Return information about the mounted NTFS volume @dentry in the statfs structure
* pointed to by @sfs (this is initialized with zeros before ntfs_statfs is
* called). We interpret the values to be correct of the moment in time at
* which we are called. Most values are variable otherwise and this isn't just
@ -2617,8 +2617,9 @@ static unsigned long __get_nr_free_mft_records(ntfs_volume *vol,
*
* Return 0 on success or -errno on error.
*/
static int ntfs_statfs(struct super_block *sb, struct kstatfs *sfs)
static int ntfs_statfs(struct dentry *dentry, struct kstatfs *sfs)
{
struct super_block *sb = dentry->d_sb;
s64 size;
ntfs_volume *vol = NTFS_SB(sb);
ntfs_inode *mft_ni = NTFS_I(vol->mft_ino);

10
fs/ocfs2/super.c
View File

@ -100,7 +100,7 @@ static int ocfs2_initialize_mem_caches(void);
static void ocfs2_free_mem_caches(void);
static void ocfs2_delete_osb(struct ocfs2_super *osb);
static int ocfs2_statfs(struct super_block *sb, struct kstatfs *buf);
static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
static int ocfs2_sync_fs(struct super_block *sb, int wait);
@ -857,7 +857,7 @@ static void ocfs2_put_super(struct super_block *sb)
mlog_exit_void();
}
static int ocfs2_statfs(struct super_block *sb, struct kstatfs *buf)
static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct ocfs2_super *osb;
u32 numbits, freebits;
@ -866,9 +866,9 @@ static int ocfs2_statfs(struct super_block *sb, struct kstatfs *buf)
struct buffer_head *bh = NULL;
struct inode *inode = NULL;
mlog_entry("(%p, %p)\n", sb, buf);
mlog_entry("(%p, %p)\n", dentry->d_sb, buf);
osb = OCFS2_SB(sb);
osb = OCFS2_SB(dentry->d_sb);
inode = ocfs2_get_system_file_inode(osb,
GLOBAL_BITMAP_SYSTEM_INODE,
@ -891,7 +891,7 @@ static int ocfs2_statfs(struct super_block *sb, struct kstatfs *buf)
freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
buf->f_type = OCFS2_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_bsize = dentry->d_sb->s_blocksize;
buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
buf->f_blocks = ((sector_t) numbits) *
(osb->s_clustersize >> osb->sb->s_blocksize_bits);

26
fs/open.c
View File

@ -31,18 +31,18 @@
#include <asm/unistd.h>
int vfs_statfs(struct super_block *sb, struct kstatfs *buf)
int vfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
int retval = -ENODEV;
if (sb) {
if (dentry) {
retval = -ENOSYS;
if (sb->s_op->statfs) {
if (dentry->d_sb->s_op->statfs) {
memset(buf, 0, sizeof(*buf));
retval = security_sb_statfs(sb);
retval = security_sb_statfs(dentry);
if (retval)
return retval;
retval = sb->s_op->statfs(sb, buf);
retval = dentry->d_sb->s_op->statfs(dentry, buf);
if (retval == 0 && buf->f_frsize == 0)
buf->f_frsize = buf->f_bsize;
}
@ -52,12 +52,12 @@ int vfs_statfs(struct super_block *sb, struct kstatfs *buf)
EXPORT_SYMBOL(vfs_statfs);
static int vfs_statfs_native(struct super_block *sb, struct statfs *buf)
static int vfs_statfs_native(struct dentry *dentry, struct statfs *buf)
{
struct kstatfs st;
int retval;
retval = vfs_statfs(sb, &st);
retval = vfs_statfs(dentry, &st);
if (retval)
return retval;
@ -95,12 +95,12 @@ static int vfs_statfs_native(struct super_block *sb, struct statfs *buf)
return 0;
}
static int vfs_statfs64(struct super_block *sb, struct statfs64 *buf)
static int vfs_statfs64(struct dentry *dentry, struct statfs64 *buf)
{
struct kstatfs st;
int retval;
retval = vfs_statfs(sb, &st);
retval = vfs_statfs(dentry, &st);
if (retval)
return retval;
@ -130,7 +130,7 @@ asmlinkage long sys_statfs(const char __user * path, struct statfs __user * buf)
error = user_path_walk(path, &nd);
if (!error) {
struct statfs tmp;
error = vfs_statfs_native(nd.dentry->d_inode->i_sb, &tmp);
error = vfs_statfs_native(nd.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_release(&nd);
@ -149,7 +149,7 @@ asmlinkage long sys_statfs64(const char __user *path, size_t sz, struct statfs64
error = user_path_walk(path, &nd);
if (!error) {
struct statfs64 tmp;
error = vfs_statfs64(nd.dentry->d_inode->i_sb, &tmp);
error = vfs_statfs64(nd.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_release(&nd);
@ -168,7 +168,7 @@ asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user * buf)
file = fget(fd);
if (!file)
goto out;
error = vfs_statfs_native(file->f_dentry->d_inode->i_sb, &tmp);
error = vfs_statfs_native(file->f_dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
fput(file);
@ -189,7 +189,7 @@ asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, struct statfs64 __user
file = fget(fd);
if (!file)
goto out;
error = vfs_statfs64(file->f_dentry->d_inode->i_sb, &tmp);
error = vfs_statfs64(file->f_dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
fput(file);

6
fs/qnx4/inode.c
View File

@ -128,7 +128,7 @@ static struct inode *qnx4_alloc_inode(struct super_block *sb);
static void qnx4_destroy_inode(struct inode *inode);
static void qnx4_read_inode(struct inode *);
static int qnx4_remount(struct super_block *sb, int *flags, char *data);
static int qnx4_statfs(struct super_block *, struct kstatfs *);
static int qnx4_statfs(struct dentry *, struct kstatfs *);
static struct super_operations qnx4_sops =
{
@ -282,8 +282,10 @@ unsigned long qnx4_block_map( struct inode *inode, long iblock )
return block;
}
static int qnx4_statfs(struct super_block *sb, struct kstatfs *buf)
static int qnx4_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
lock_kernel();
buf->f_type = sb->s_magic;

8
fs/reiserfs/super.c
View File

@ -60,7 +60,7 @@ static int is_any_reiserfs_magic_string(struct reiserfs_super_block *rs)
}
static int reiserfs_remount(struct super_block *s, int *flags, char *data);
static int reiserfs_statfs(struct super_block *s, struct kstatfs *buf);
static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf);
static int reiserfs_sync_fs(struct super_block *s, int wait)
{
@ -1938,15 +1938,15 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
return errval;
}
static int reiserfs_statfs(struct super_block *s, struct kstatfs *buf)
static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s);
struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(dentry->d_sb);
buf->f_namelen = (REISERFS_MAX_NAME(s->s_blocksize));
buf->f_bfree = sb_free_blocks(rs);
buf->f_bavail = buf->f_bfree;
buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1;
buf->f_bsize = s->s_blocksize;
buf->f_bsize = dentry->d_sb->s_blocksize;
/* changed to accommodate gcc folks. */
buf->f_type = REISERFS_SUPER_MAGIC;
return 0;

4
fs/romfs/inode.c
View File

@ -179,12 +179,12 @@ outnobh:
/* That's simple too. */
static int
romfs_statfs(struct super_block *sb, struct kstatfs *buf)
romfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
buf->f_type = ROMFS_MAGIC;
buf->f_bsize = ROMBSIZE;
buf->f_bfree = buf->f_bavail = buf->f_ffree;
buf->f_blocks = (romfs_maxsize(sb)+ROMBSIZE-1)>>ROMBSBITS;
buf->f_blocks = (romfs_maxsize(dentry->d_sb)+ROMBSIZE-1)>>ROMBSBITS;
buf->f_namelen = ROMFS_MAXFN;
return 0;
}

6
fs/smbfs/inode.c
View File

@ -48,7 +48,7 @@
static void smb_delete_inode(struct inode *);
static void smb_put_super(struct super_block *);
static int smb_statfs(struct super_block *, struct kstatfs *);
static int smb_statfs(struct dentry *, struct kstatfs *);
static int smb_show_options(struct seq_file *, struct vfsmount *);
static kmem_cache_t *smb_inode_cachep;
@ -641,13 +641,13 @@ out_no_server:
}
static int
smb_statfs(struct super_block *sb, struct kstatfs *buf)
smb_statfs(struct dentry *dentry, struct kstatfs *buf)
{
int result;
lock_kernel();
result = smb_proc_dskattr(sb, buf);
result = smb_proc_dskattr(dentry, buf);
unlock_kernel();

4
fs/smbfs/proc.c
View File

@ -3226,9 +3226,9 @@ smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr)
}
int
smb_proc_dskattr(struct super_block *sb, struct kstatfs *attr)
smb_proc_dskattr(struct dentry *dentry, struct kstatfs *attr)
{
struct smb_sb_info *server = SMB_SB(sb);
struct smb_sb_info *server = SMB_SB(dentry->d_sb);
int result;
char *p;
long unit;

2
fs/smbfs/proto.h
View File

@ -29,7 +29,7 @@ extern int smb_proc_getattr(struct dentry *dir, struct smb_fattr *fattr);
extern int smb_proc_setattr(struct dentry *dir, struct smb_fattr *fattr);
extern int smb_proc_setattr_unix(struct dentry *d, struct iattr *attr, unsigned int major, unsigned int minor);
extern int smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr);
extern int smb_proc_dskattr(struct super_block *sb, struct kstatfs *attr);
extern int smb_proc_dskattr(struct dentry *dentry, struct kstatfs *attr);
extern int smb_proc_read_link(struct smb_sb_info *server, struct dentry *d, char *buffer, int len);
extern int smb_proc_symlink(struct smb_sb_info *server, struct dentry *d, const char *oldpath);
extern int smb_proc_link(struct smb_sb_info *server, struct dentry *dentry, struct dentry *new_dentry);

2
fs/super.c
View File

@ -486,7 +486,7 @@ asmlinkage long sys_ustat(unsigned dev, struct ustat __user * ubuf)
s = user_get_super(new_decode_dev(dev));
if (s == NULL)
goto out;
err = vfs_statfs(s, &sbuf);
err = vfs_statfs(s->s_root, &sbuf);
drop_super(s);
if (err)
goto out;

3
fs/sysv/inode.c
View File

@ -85,8 +85,9 @@ static void sysv_put_super(struct super_block *sb)
kfree(sbi);
}
static int sysv_statfs(struct super_block *sb, struct kstatfs *buf)
static int sysv_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct sysv_sb_info *sbi = SYSV_SB(sb);
buf->f_type = sb->s_magic;

6
fs/udf/super.c
View File

@ -91,7 +91,7 @@ static void udf_load_partdesc(struct super_block *, struct buffer_head *);
static void udf_open_lvid(struct super_block *);
static void udf_close_lvid(struct super_block *);
static unsigned int udf_count_free(struct super_block *);
static int udf_statfs(struct super_block *, struct kstatfs *);
static int udf_statfs(struct dentry *, struct kstatfs *);
/* UDF filesystem type */
static int udf_get_sb(struct file_system_type *fs_type,
@ -1779,8 +1779,10 @@ udf_put_super(struct super_block *sb)
* Written, tested, and released.
*/
static int
udf_statfs(struct super_block *sb, struct kstatfs *buf)
udf_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
buf->f_type = UDF_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = UDF_SB_PARTLEN(sb, UDF_SB_PARTITION(sb));

3
fs/ufs/super.c
View File

@ -1113,8 +1113,9 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
return 0;
}
static int ufs_statfs (struct super_block *sb, struct kstatfs *buf)
static int ufs_statfs (struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct ufs_sb_private_info * uspi;
struct ufs_super_block_first * usb1;
struct ufs_super_block * usb;

4
fs/xfs/linux-2.6/xfs_super.c
View File

@ -684,10 +684,10 @@ xfs_fs_sync_super(
STATIC int
xfs_fs_statfs(
struct super_block *sb,
struct dentry *dentry,
struct kstatfs *statp)
{
return -bhv_vfs_statvfs(vfs_from_sb(sb), statp, NULL);
return -bhv_vfs_statvfs(vfs_from_sb(dentry->d_sb), statp, NULL);
}
STATIC int

2
include/linux/coda_psdev.h
View File

@ -70,7 +70,7 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
unsigned int cmd, struct PioctlData *data);
int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
int venus_fsync(struct super_block *sb, struct CodaFid *fid);
int venus_statfs(struct super_block *sb, struct kstatfs *sfs);
int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
/* messages between coda filesystem in kernel and Venus */

6
include/linux/fs.h
View File

@ -1096,7 +1096,7 @@ struct super_operations {
int (*sync_fs)(struct super_block *sb, int wait);
void (*write_super_lockfs) (struct super_block *);
void (*unlockfs) (struct super_block *);
int (*statfs) (struct super_block *, struct kstatfs *);
int (*statfs) (struct dentry *, struct kstatfs *);
int (*remount_fs) (struct super_block *, int *, char *);
void (*clear_inode) (struct inode *);
void (*umount_begin) (struct super_block *);
@ -1325,7 +1325,7 @@ extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
struct vfsmount *);
extern int vfs_statfs(struct super_block *, struct kstatfs *);
extern int vfs_statfs(struct dentry *, struct kstatfs *);
/* /sys/fs */
extern struct subsystem fs_subsys;
@ -1746,7 +1746,7 @@ extern int dcache_dir_close(struct inode *, struct file *);
extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
extern int dcache_readdir(struct file *, void *, filldir_t);
extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
extern int simple_statfs(struct super_block *, struct kstatfs *);
extern int simple_statfs(struct dentry *, struct kstatfs *);
extern int simple_link(struct dentry *, struct inode *, struct dentry *);
extern int simple_unlink(struct inode *, struct dentry *);
extern int simple_rmdir(struct inode *, struct dentry *);

5
include/linux/mount.h
View File

@ -17,6 +17,11 @@
#include <linux/spinlock.h>
#include <asm/atomic.h>
struct super_block;
struct vfsmount;
struct dentry;
struct namespace;
#define MNT_NOSUID 0x01
#define MNT_NODEV 0x02
#define MNT_NOEXEC 0x04

14
include/linux/security.h
View File

@ -171,9 +171,9 @@ struct swap_info_struct;
* Deallocate and clear the sb->s_security field.
* @sb contains the super_block structure to be modified.
* @sb_statfs:
* Check permission before obtaining filesystem statistics for the @sb
* filesystem.
* @sb contains the super_block structure for the filesystem.
* Check permission before obtaining filesystem statistics for the @mnt
* mountpoint.
* @dentry is a handle on the superblock for the filesystem.
* Return 0 if permission is granted.
* @sb_mount:
* Check permission before an object specified by @dev_name is mounted on
@ -1127,7 +1127,7 @@ struct security_operations {
int (*sb_copy_data)(struct file_system_type *type,
void *orig, void *copy);
int (*sb_kern_mount) (struct super_block *sb, void *data);
int (*sb_statfs) (struct super_block * sb);
int (*sb_statfs) (struct dentry *dentry);
int (*sb_mount) (char *dev_name, struct nameidata * nd,
char *type, unsigned long flags, void *data);
int (*sb_check_sb) (struct vfsmount * mnt, struct nameidata * nd);
@ -1450,9 +1450,9 @@ static inline int security_sb_kern_mount (struct super_block *sb, void *data)
return security_ops->sb_kern_mount (sb, data);
}
static inline int security_sb_statfs (struct super_block *sb)
static inline int security_sb_statfs (struct dentry *dentry)
{
return security_ops->sb_statfs (sb);
return security_ops->sb_statfs (dentry);
}
static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
@ -2162,7 +2162,7 @@ static inline int security_sb_kern_mount (struct super_block *sb, void *data)
return 0;
}
static inline int security_sb_statfs (struct super_block *sb)
static inline int security_sb_statfs (struct dentry *dentry)
{
return 0;
}

2
kernel/acct.c
View File

@ -118,7 +118,7 @@ static int check_free_space(struct file *file)
spin_unlock(&acct_globals.lock);
/* May block */
if (vfs_statfs(file->f_dentry->d_inode->i_sb, &sbuf))
if (vfs_statfs(file->f_dentry, &sbuf))
return res;
suspend = sbuf.f_blocks * SUSPEND;
resume = sbuf.f_blocks * RESUME;

4
mm/shmem.c
View File

@ -1654,9 +1654,9 @@ static ssize_t shmem_file_sendfile(struct file *in_file, loff_t *ppos,
return desc.error;
}
static int shmem_statfs(struct super_block *sb, struct kstatfs *buf)
static int shmem_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
struct shmem_sb_info *sbinfo = SHMEM_SB(dentry->d_sb);
buf->f_type = TMPFS_MAGIC;
buf->f_bsize = PAGE_CACHE_SIZE;

2
security/dummy.c
View File

@ -191,7 +191,7 @@ static int dummy_sb_kern_mount (struct super_block *sb, void *data)
return 0;
}
static int dummy_sb_statfs (struct super_block *sb)
static int dummy_sb_statfs (struct dentry *dentry)
{
return 0;
}

6
security/selinux/hooks.c
View File

@ -1903,13 +1903,13 @@ static int selinux_sb_kern_mount(struct super_block *sb, void *data)
return superblock_has_perm(current, sb, FILESYSTEM__MOUNT, &ad);
}
static int selinux_sb_statfs(struct super_block *sb)
static int selinux_sb_statfs(struct dentry *dentry)
{
struct avc_audit_data ad;
AVC_AUDIT_DATA_INIT(&ad,FS);
ad.u.fs.dentry = sb->s_root;
return superblock_has_perm(current, sb, FILESYSTEM__GETATTR, &ad);
ad.u.fs.dentry = dentry->d_sb->s_root;
return superblock_has_perm(current, dentry->d_sb, FILESYSTEM__GETATTR, &ad);
}
static int selinux_mount(char * dev_name,