diff options
| -rw-r--r-- | fs/nfs/super.c | 132 |
1 files changed, 66 insertions, 66 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 3f967cee407..d3286583009 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -266,7 +266,8 @@ static int nfs_show_options(struct seq_file *, struct vfsmount *); static int nfs_show_devname(struct seq_file *, struct vfsmount *); static int nfs_show_path(struct seq_file *, struct vfsmount *); static int nfs_show_stats(struct seq_file *, struct vfsmount *); -static int nfs_get_sb(struct file_system_type *, int, const char *, void *, struct vfsmount *); +static struct dentry *nfs_fs_mount(struct file_system_type *, + int, const char *, void *); static struct dentry *nfs_xdev_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *raw_data); static void nfs_put_super(struct super_block *); @@ -276,7 +277,7 @@ static int nfs_remount(struct super_block *sb, int *flags, char *raw_data); static struct file_system_type nfs_fs_type = { .owner = THIS_MODULE, .name = "nfs", - .get_sb = nfs_get_sb, + .mount = nfs_fs_mount, .kill_sb = nfs_kill_super, .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA, }; @@ -307,16 +308,16 @@ static const struct super_operations nfs_sops = { #ifdef CONFIG_NFS_V4 static int nfs4_validate_text_mount_data(void *options, struct nfs_parsed_mount_data *args, const char *dev_name); -static int nfs4_try_mount(int flags, const char *dev_name, - struct nfs_parsed_mount_data *data, struct vfsmount *mnt); -static int nfs4_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt); +static struct dentry *nfs4_try_mount(int flags, const char *dev_name, + struct nfs_parsed_mount_data *data); +static struct dentry *nfs4_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *raw_data); static struct dentry *nfs4_remote_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *raw_data); static struct dentry *nfs4_xdev_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *raw_data); -static int nfs4_referral_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt); +static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *raw_data); static struct dentry *nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *raw_data); static void nfs4_kill_super(struct super_block *sb); @@ -324,7 +325,7 @@ static void nfs4_kill_super(struct super_block *sb); static struct file_system_type nfs4_fs_type = { .owner = THIS_MODULE, .name = "nfs4", - .get_sb = nfs4_get_sb, + .mount = nfs4_mount, .kill_sb = nfs4_kill_super, .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA, }; @@ -356,7 +357,7 @@ static struct file_system_type nfs4_remote_referral_fs_type = { struct file_system_type nfs4_referral_fs_type = { .owner = THIS_MODULE, .name = "nfs4", - .get_sb = nfs4_referral_get_sb, + .mount = nfs4_referral_mount, .kill_sb = nfs4_kill_super, .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA, }; @@ -2295,19 +2296,19 @@ static int nfs_bdi_register(struct nfs_server *server) return bdi_register_dev(&server->backing_dev_info, server->s_dev); } -static int nfs_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt) +static struct dentry *nfs_fs_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *raw_data) { struct nfs_server *server = NULL; struct super_block *s; struct nfs_parsed_mount_data *data; struct nfs_fh *mntfh; - struct dentry *mntroot; + struct dentry *mntroot = ERR_PTR(-ENOMEM); int (*compare_super)(struct super_block *, void *) = nfs_compare_super; struct nfs_sb_mountdata sb_mntdata = { .mntflags = flags, }; - int error = -ENOMEM; + int error; data = nfs_alloc_parsed_mount_data(NFS_DEFAULT_VERSION); mntfh = nfs_alloc_fhandle(); @@ -2318,12 +2319,14 @@ static int nfs_get_sb(struct file_system_type *fs_type, /* Validate the mount data */ error = nfs_validate_mount_data(raw_data, data, mntfh, dev_name); - if (error < 0) + if (error < 0) { + mntroot = ERR_PTR(error); goto out; + } #ifdef CONFIG_NFS_V4 if (data->version == 4) { - error = nfs4_try_mount(flags, dev_name, data, mnt); + mntroot = nfs4_try_mount(flags, dev_name, data); kfree(data->client_address); kfree(data->nfs_server.export_path); goto out; @@ -2333,7 +2336,7 @@ static int nfs_get_sb(struct file_system_type *fs_type, /* Get a volume representation */ server = nfs_create_server(data, mntfh); if (IS_ERR(server)) { - error = PTR_ERR(server); + mntroot = ERR_CAST(server); goto out; } sb_mntdata.server = server; @@ -2344,7 +2347,7 @@ static int nfs_get_sb(struct file_system_type *fs_type, /* Get a superblock - note that we may end up sharing one that already exists */ s = sget(fs_type, compare_super, nfs_set_super, &sb_mntdata); if (IS_ERR(s)) { - error = PTR_ERR(s); + mntroot = ERR_CAST(s); goto out_err_nosb; } @@ -2353,8 +2356,10 @@ static int nfs_get_sb(struct file_system_type *fs_type, server = NULL; } else { error = nfs_bdi_register(server); - if (error) + if (error) { + mntroot = ERR_PTR(error); goto error_splat_bdi; + } } if (!s->s_root) { @@ -2365,19 +2370,14 @@ static int nfs_get_sb(struct file_system_type *fs_type, } mntroot = nfs_get_root(s, mntfh, dev_name); - if (IS_ERR(mntroot)) { - error = PTR_ERR(mntroot); + if (IS_ERR(mntroot)) goto error_splat_super; - } error = security_sb_set_mnt_opts(s, &data->lsm_opts); if (error) goto error_splat_root; s->s_flags |= MS_ACTIVE; - mnt->mnt_sb = s; - mnt->mnt_root = mntroot; - error = 0; out: kfree(data->nfs_server.hostname); @@ -2387,7 +2387,7 @@ out: out_free_fh: nfs_free_fhandle(mntfh); kfree(data); - return error; + return mntroot; out_err_nosb: nfs_free_server(server); @@ -2395,6 +2395,7 @@ out_err_nosb: error_splat_root: dput(mntroot); + mntroot = ERR_PTR(error); error_splat_super: if (server && !s->s_root) bdi_unregister(&server->backing_dev_info); @@ -2865,17 +2866,18 @@ static void nfs_referral_loop_unprotect(void) kfree(p); } -static int nfs_follow_remote_path(struct vfsmount *root_mnt, - const char *export_path, struct vfsmount *mnt_target) +static struct dentry *nfs_follow_remote_path(struct vfsmount *root_mnt, + const char *export_path) { struct nameidata *nd = NULL; struct mnt_namespace *ns_private; struct super_block *s; + struct dentry *dentry; int ret; nd = kmalloc(sizeof(*nd), GFP_KERNEL); if (nd == NULL) - return -ENOMEM; + return ERR_PTR(-ENOMEM); ns_private = create_mnt_ns(root_mnt); ret = PTR_ERR(ns_private); @@ -2897,29 +2899,27 @@ static int nfs_follow_remote_path(struct vfsmount *root_mnt, s = nd->path.mnt->mnt_sb; atomic_inc(&s->s_active); - mnt_target->mnt_sb = s; - mnt_target->mnt_root = dget(nd->path.dentry); + dentry = dget(nd->path.dentry); path_put(&nd->path); kfree(nd); down_write(&s->s_umount); - return 0; + return dentry; out_put_mnt_ns: put_mnt_ns(ns_private); out_mntput: mntput(root_mnt); out_err: kfree(nd); - return ret; + return ERR_PTR(ret); } -static int nfs4_try_mount(int flags, const char *dev_name, - struct nfs_parsed_mount_data *data, - struct vfsmount *mnt) +static struct dentry *nfs4_try_mount(int flags, const char *dev_name, + struct nfs_parsed_mount_data *data) { char *export_path; struct vfsmount *root_mnt; - int error; + struct dentry *res; dfprintk(MOUNT, "--> nfs4_try_mount()\n"); @@ -2929,26 +2929,25 @@ static int nfs4_try_mount(int flags, const char *dev_name, data->nfs_server.hostname); data->nfs_server.export_path = export_path; - error = PTR_ERR(root_mnt); - if (IS_ERR(root_mnt)) - goto out; - - error = nfs_follow_remote_path(root_mnt, export_path, mnt); + res = ERR_CAST(root_mnt); + if (!IS_ERR(root_mnt)) + res = nfs_follow_remote_path(root_mnt, export_path); -out: - dfprintk(MOUNT, "<-- nfs4_try_mount() = %d%s\n", error, - error != 0 ? " [error]" : ""); - return error; + dfprintk(MOUNT, "<-- nfs4_try_mount() = %ld%s\n", + IS_ERR(res) ? PTR_ERR(res) : 0, + IS_ERR(res) ? " [error]" : ""); + return res; } /* * Get the superblock for an NFS4 mountpoint */ -static int nfs4_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt) +static struct dentry *nfs4_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *raw_data) { struct nfs_parsed_mount_data *data; int error = -ENOMEM; + struct dentry *res = ERR_PTR(-ENOMEM); data = nfs_alloc_parsed_mount_data(4); if (data == NULL) @@ -2956,10 +2955,14 @@ static int nfs4_get_sb(struct file_system_type *fs_type, /* Validate the mount data */ error = nfs4_validate_mount_data(raw_data, data, dev_name); - if (error < 0) + if (error < 0) { + res = ERR_PTR(error); goto out; + } - error = nfs4_try_mount(flags, dev_name, data, mnt); + res = nfs4_try_mount(flags, dev_name, data); + if (IS_ERR(res)) + error = PTR_ERR(res); out: kfree(data->client_address); @@ -2968,9 +2971,9 @@ out: kfree(data->fscache_uniq); out_free_data: kfree(data); - dprintk("<-- nfs4_get_sb() = %d%s\n", error, + dprintk("<-- nfs4_mount() = %d%s\n", error, error != 0 ? " [error]" : ""); - return error; + return res; } static void nfs4_kill_super(struct super_block *sb) @@ -3164,16 +3167,15 @@ error_splat_bdi: /* * Create an NFS4 server record on referral traversal */ -static int nfs4_referral_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *raw_data, - struct vfsmount *mnt) +static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *raw_data) { struct nfs_clone_mount *data = raw_data; char *export_path; struct vfsmount *root_mnt; - int error; + struct dentry *res; - dprintk("--> nfs4_referral_get_sb()\n"); + dprintk("--> nfs4_referral_mount()\n"); export_path = data->mnt_path; data->mnt_path = "/"; @@ -3182,15 +3184,13 @@ static int nfs4_referral_get_sb(struct file_system_type *fs_type, flags, data, data->hostname); data->mnt_path = export_path; - error = PTR_ERR(root_mnt); - if (IS_ERR(root_mnt)) - goto out; - - error = nfs_follow_remote_path(root_mnt, export_path, mnt); -out: - dprintk("<-- nfs4_referral_get_sb() = %d%s\n", error, - error != 0 ? " [error]" : ""); - return error; + res = ERR_CAST(root_mnt); + if (!IS_ERR(root_mnt)) + res = nfs_follow_remote_path(root_mnt, export_path); + dprintk("<-- nfs4_referral_mount() = %ld%s\n", + IS_ERR(res) ? PTR_ERR(res) : 0, + IS_ERR(res) ? " [error]" : ""); + return res; } #endif /* CONFIG_NFS_V4 */ |