4ebd9ab387
This fixes a bug in fs/nfs which makes it impossible to build nfs without having procfs enabled. Signed-off-by: Dominik Hackl <dominik@hackl.dhs.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
186 lines
4.5 KiB
C
186 lines
4.5 KiB
C
/*
|
|
* NFS internal definitions
|
|
*/
|
|
|
|
#include <linux/mount.h>
|
|
|
|
struct nfs_clone_mount {
|
|
const struct super_block *sb;
|
|
const struct dentry *dentry;
|
|
struct nfs_fh *fh;
|
|
struct nfs_fattr *fattr;
|
|
char *hostname;
|
|
char *mnt_path;
|
|
struct sockaddr_in *addr;
|
|
rpc_authflavor_t authflavor;
|
|
};
|
|
|
|
/* namespace-nfs4.c */
|
|
#ifdef CONFIG_NFS_V4
|
|
extern struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry);
|
|
#else
|
|
static inline
|
|
struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry)
|
|
{
|
|
return ERR_PTR(-ENOENT);
|
|
}
|
|
#endif
|
|
|
|
/* callback_xdr.c */
|
|
extern struct svc_version nfs4_callback_version1;
|
|
|
|
/* pagelist.c */
|
|
extern int __init nfs_init_nfspagecache(void);
|
|
extern void nfs_destroy_nfspagecache(void);
|
|
extern int __init nfs_init_readpagecache(void);
|
|
extern void nfs_destroy_readpagecache(void);
|
|
extern int __init nfs_init_writepagecache(void);
|
|
extern void nfs_destroy_writepagecache(void);
|
|
|
|
#ifdef CONFIG_NFS_DIRECTIO
|
|
extern int __init nfs_init_directcache(void);
|
|
extern void nfs_destroy_directcache(void);
|
|
#else
|
|
#define nfs_init_directcache() (0)
|
|
#define nfs_destroy_directcache() do {} while(0)
|
|
#endif
|
|
|
|
/* nfs2xdr.c */
|
|
extern struct rpc_procinfo nfs_procedures[];
|
|
extern u32 * nfs_decode_dirent(u32 *, struct nfs_entry *, int);
|
|
|
|
/* nfs3xdr.c */
|
|
extern struct rpc_procinfo nfs3_procedures[];
|
|
extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int);
|
|
|
|
/* nfs4xdr.c */
|
|
extern int nfs_stat_to_errno(int);
|
|
extern u32 *nfs4_decode_dirent(u32 *p, struct nfs_entry *entry, int plus);
|
|
|
|
/* nfs4proc.c */
|
|
#ifdef CONFIG_NFS_V4
|
|
extern struct rpc_procinfo nfs4_procedures[];
|
|
|
|
extern int nfs4_proc_fs_locations(struct inode *dir, struct dentry *dentry,
|
|
struct nfs4_fs_locations *fs_locations,
|
|
struct page *page);
|
|
#endif
|
|
|
|
/* inode.c */
|
|
extern struct inode *nfs_alloc_inode(struct super_block *sb);
|
|
extern void nfs_destroy_inode(struct inode *);
|
|
extern int nfs_write_inode(struct inode *,int);
|
|
extern void nfs_clear_inode(struct inode *);
|
|
#ifdef CONFIG_NFS_V4
|
|
extern void nfs4_clear_inode(struct inode *);
|
|
#endif
|
|
|
|
/* super.c */
|
|
extern struct file_system_type nfs_referral_nfs4_fs_type;
|
|
extern struct file_system_type clone_nfs_fs_type;
|
|
#ifdef CONFIG_NFS_V4
|
|
extern struct file_system_type clone_nfs4_fs_type;
|
|
#endif
|
|
|
|
extern struct rpc_stat nfs_rpcstat;
|
|
|
|
extern int __init register_nfs_fs(void);
|
|
extern void __exit unregister_nfs_fs(void);
|
|
|
|
/* namespace.c */
|
|
extern char *nfs_path(const char *base, const struct dentry *dentry,
|
|
char *buffer, ssize_t buflen);
|
|
|
|
/*
|
|
* Determine the mount path as a string
|
|
*/
|
|
static inline char *
|
|
nfs4_path(const struct dentry *dentry, char *buffer, ssize_t buflen)
|
|
{
|
|
#ifdef CONFIG_NFS_V4
|
|
return nfs_path(NFS_SB(dentry->d_sb)->mnt_path, dentry, buffer, buflen);
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Determine the device name as a string
|
|
*/
|
|
static inline char *nfs_devname(const struct vfsmount *mnt_parent,
|
|
const struct dentry *dentry,
|
|
char *buffer, ssize_t buflen)
|
|
{
|
|
return nfs_path(mnt_parent->mnt_devname, dentry, buffer, buflen);
|
|
}
|
|
|
|
/*
|
|
* Determine the actual block size (and log2 thereof)
|
|
*/
|
|
static inline
|
|
unsigned long nfs_block_bits(unsigned long bsize, unsigned char *nrbitsp)
|
|
{
|
|
/* make sure blocksize is a power of two */
|
|
if ((bsize & (bsize - 1)) || nrbitsp) {
|
|
unsigned char nrbits;
|
|
|
|
for (nrbits = 31; nrbits && !(bsize & (1 << nrbits)); nrbits--)
|
|
;
|
|
bsize = 1 << nrbits;
|
|
if (nrbitsp)
|
|
*nrbitsp = nrbits;
|
|
}
|
|
|
|
return bsize;
|
|
}
|
|
|
|
/*
|
|
* Calculate the number of 512byte blocks used.
|
|
*/
|
|
static inline unsigned long nfs_calc_block_size(u64 tsize)
|
|
{
|
|
loff_t used = (tsize + 511) >> 9;
|
|
return (used > ULONG_MAX) ? ULONG_MAX : used;
|
|
}
|
|
|
|
/*
|
|
* Compute and set NFS server blocksize
|
|
*/
|
|
static inline
|
|
unsigned long nfs_block_size(unsigned long bsize, unsigned char *nrbitsp)
|
|
{
|
|
if (bsize < NFS_MIN_FILE_IO_SIZE)
|
|
bsize = NFS_DEF_FILE_IO_SIZE;
|
|
else if (bsize >= NFS_MAX_FILE_IO_SIZE)
|
|
bsize = NFS_MAX_FILE_IO_SIZE;
|
|
|
|
return nfs_block_bits(bsize, nrbitsp);
|
|
}
|
|
|
|
/*
|
|
* Determine the maximum file size for a superblock
|
|
*/
|
|
static inline
|
|
void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize)
|
|
{
|
|
sb->s_maxbytes = (loff_t)maxfilesize;
|
|
if (sb->s_maxbytes > MAX_LFS_FILESIZE || sb->s_maxbytes <= 0)
|
|
sb->s_maxbytes = MAX_LFS_FILESIZE;
|
|
}
|
|
|
|
/*
|
|
* Check if the string represents a "valid" IPv4 address
|
|
*/
|
|
static inline int valid_ipaddr4(const char *buf)
|
|
{
|
|
int rc, count, in[4];
|
|
|
|
rc = sscanf(buf, "%d.%d.%d.%d", &in[0], &in[1], &in[2], &in[3]);
|
|
if (rc != 4)
|
|
return -EINVAL;
|
|
for (count = 0; count < 4; count++) {
|
|
if (in[count] > 255)
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|