diff options
| -rw-r--r-- | arch/parisc/hpux/sys_hpux.c | 9 | ||||
| -rw-r--r-- | fs/compat.c | 9 | ||||
| -rw-r--r-- | fs/internal.h | 1 | ||||
| -rw-r--r-- | fs/statfs.c | 21 | ||||
| -rw-r--r-- | include/linux/fs.h | 3 |
5 files changed, 17 insertions, 26 deletions
diff --git a/arch/parisc/hpux/sys_hpux.c b/arch/parisc/hpux/sys_hpux.c index 6ab9580..d9dc6cd 100644 --- a/arch/parisc/hpux/sys_hpux.c +++ b/arch/parisc/hpux/sys_hpux.c @@ -136,16 +136,9 @@ struct hpux_ustat { */ static int hpux_ustat(dev_t dev, struct hpux_ustat __user *ubuf) { - struct super_block *s; struct hpux_ustat tmp; /* Changed to hpux_ustat */ struct kstatfs sbuf; - int err = -EINVAL; - - s = user_get_super(dev); - if (s == NULL) - goto out; - err = statfs_by_dentry(s->s_root, &sbuf); - drop_super(s); + int err = vfs_ustat(dev, &sbuf); if (err) goto out; diff --git a/fs/compat.c b/fs/compat.c index c987875..9db5a60 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -342,16 +342,9 @@ asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct c */ asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u) { - struct super_block *sb; struct compat_ustat tmp; struct kstatfs sbuf; - int err; - - sb = user_get_super(new_decode_dev(dev)); - if (!sb) - return -EINVAL; - err = statfs_by_dentry(sb->s_root, &sbuf); - drop_super(sb); + int err = vfs_ustat(new_decode_dev(dev), &sbuf); if (err) return err; diff --git a/fs/internal.h b/fs/internal.h index 839d3f9..7b1cb15 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -78,6 +78,7 @@ extern int do_remount_sb(struct super_block *, int, void *, int); extern bool grab_super_passive(struct super_block *sb); extern struct dentry *mount_fs(struct file_system_type *, int, const char *, void *); +extern struct super_block *user_get_super(dev_t); /* * open.c diff --git a/fs/statfs.c b/fs/statfs.c index 9cf04a1..2aa6a22 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -7,6 +7,7 @@ #include <linux/statfs.h> #include <linux/security.h> #include <linux/uaccess.h> +#include "internal.h" static int flags_by_mnt(int mnt_flags) { @@ -45,7 +46,7 @@ static int calculate_f_flags(struct vfsmount *mnt) flags_by_sb(mnt->mnt_sb->s_flags); } -int statfs_by_dentry(struct dentry *dentry, struct kstatfs *buf) +static int statfs_by_dentry(struct dentry *dentry, struct kstatfs *buf) { int retval; @@ -205,19 +206,23 @@ SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, size_t, sz, struct statfs64 __user return error; } -SYSCALL_DEFINE2(ustat, unsigned, dev, struct ustat __user *, ubuf) +int vfs_ustat(dev_t dev, struct kstatfs *sbuf) { - struct super_block *s; - struct ustat tmp; - struct kstatfs sbuf; + struct super_block *s = user_get_super(dev); int err; - - s = user_get_super(new_decode_dev(dev)); if (!s) return -EINVAL; - err = statfs_by_dentry(s->s_root, &sbuf); + err = statfs_by_dentry(s->s_root, sbuf); drop_super(s); + return err; +} + +SYSCALL_DEFINE2(ustat, unsigned, dev, struct ustat __user *, ubuf) +{ + struct ustat tmp; + struct kstatfs sbuf; + int err = vfs_ustat(new_decode_dev(dev), &sbuf); if (err) return err; diff --git a/include/linux/fs.h b/include/linux/fs.h index ed17e54..cec429d7 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1939,7 +1939,7 @@ extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *, extern int vfs_statfs(struct path *, struct kstatfs *); extern int user_statfs(const char __user *, struct kstatfs *); extern int fd_statfs(int, struct kstatfs *); -extern int statfs_by_dentry(struct dentry *, struct kstatfs *); +extern int vfs_ustat(dev_t, struct kstatfs *); extern int freeze_super(struct super_block *super); extern int thaw_super(struct super_block *super); extern bool our_mnt(struct vfsmount *mnt); @@ -2531,7 +2531,6 @@ extern void put_filesystem(struct file_system_type *fs); extern struct file_system_type *get_fs_type(const char *name); extern struct super_block *get_super(struct block_device *); extern struct super_block *get_active_super(struct block_device *bdev); -extern struct super_block *user_get_super(dev_t); extern void drop_super(struct super_block *sb); extern void iterate_supers(void (*)(struct super_block *, void *), void *); extern void iterate_supers_type(struct file_system_type *, |
