[PATCH] knfsd: Drop 'serv' option to svc_recv and svc_process

[safe/jmp/linux-2.6] / fs / nfsd / nfsctl.c

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index c8960af..80e97a5 100644 (file)
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -6,7 +6,6 @@
  * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 
 #include <linux/linkage.h>
@@ -24,10 +23,14 @@
 #include <linux/pagemap.h>
 #include <linux/init.h>
 #include <linux/string.h>
+#include <linux/smp_lock.h>
+#include <linux/ctype.h>
 
 #include <linux/nfs.h>
 #include <linux/nfsd_idmap.h>
+#include <linux/lockd/bind.h>
 #include <linux/sunrpc/svc.h>
+#include <linux/sunrpc/svcsock.h>
 #include <linux/nfsd/nfsd.h>
 #include <linux/nfsd/cache.h>
 #include <linux/nfsd/xdr.h>
@@ -36,8 +39,6 @@
 
 #include <asm/uaccess.h>
 
-unsigned int nfsd_versbits = ~0;
-
 /*
  *     We have a single directory with 9 nodes in it.
  */
@@ -54,6 +55,7 @@ enum {
        NFSD_Fh,
        NFSD_Threads,
        NFSD_Versions,
+       NFSD_Ports,
        /*
         * The below MUST come last.  Otherwise we leave a hole in nfsd_files[]
         * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
@@ -77,6 +79,7 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size);
 static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
 static ssize_t write_threads(struct file *file, char *buf, size_t size);
 static ssize_t write_versions(struct file *file, char *buf, size_t size);
+static ssize_t write_ports(struct file *file, char *buf, size_t size);
 #ifdef CONFIG_NFSD_V4
 static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
@@ -93,6 +96,7 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = {
        [NFSD_Fh] = write_filehandle,
        [NFSD_Threads] = write_threads,
        [NFSD_Versions] = write_versions,
+       [NFSD_Ports] = write_ports,
 #ifdef CONFIG_NFSD_V4
        [NFSD_Leasetime] = write_leasetime,
        [NFSD_RecoveryDir] = write_recoverydir,
@@ -134,7 +138,7 @@ static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size
        return simple_transaction_read(file, buf, size, pos);
 }
 
-static struct file_operations transaction_ops = {
+static const struct file_operations transaction_ops = {
        .write          = nfsctl_transaction_write,
        .read           = nfsctl_transaction_read,
        .release        = simple_transaction_release,
@@ -146,7 +150,7 @@ static int exports_open(struct inode *inode, struct file *file)
        return seq_open(file, &nfs_exports_op);
 }
 
-static struct file_operations exports_operations = {
+static const struct file_operations exports_operations = {
        .open           = exports_open,
        .read           = seq_read,
        .llseek         = seq_lseek,
@@ -373,6 +377,10 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
 
        if (size>0) {
                if (nfsd_serv)
+                       /* Cannot change versions without updating
+                        * nfsd_serv->sv_xdrsize, and reallocing
+                        * rq_argp and rq_resp
+                        */
                        return -EBUSY;
                if (buf[size-1] != '\n')
                        return -EINVAL;
@@ -391,10 +399,7 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
                        case 2:
                        case 3:
                        case 4:
-                               if (sign != '-')
-                                       NFSCTL_VERSET(nfsd_versbits, num);
-                               else
-                                       NFSCTL_VERUNSET(nfsd_versbits, num);
+                               nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
                                break;
                        default:
                                return -EINVAL;
@@ -405,16 +410,15 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
                /* If all get turned off, turn them back on, as
                 * having no versions is BAD
                 */
-               if ((nfsd_versbits & NFSCTL_VERALL)==0)
-                       nfsd_versbits = NFSCTL_VERALL;
+               nfsd_reset_versions();
        }
        /* Now write current state into reply buffer */
        len = 0;
        sep = "";
        for (num=2 ; num <= 4 ; num++)
-               if (NFSCTL_VERISSET(NFSCTL_VERALL, num)) {
+               if (nfsd_vers(num, NFSD_AVAIL)) {
                        len += sprintf(buf+len, "%s%c%d", sep,
-                                      NFSCTL_VERISSET(nfsd_versbits, num)?'+':'-',
+                                      nfsd_vers(num, NFSD_TEST)?'+':'-',
                                       num);
                        sep = " ";
                }
@@ -422,6 +426,59 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
        return len;
 }
 
+static ssize_t write_ports(struct file *file, char *buf, size_t size)
+{
+       if (size == 0) {
+               int len = 0;
+               lock_kernel();
+               if (nfsd_serv)
+                       len = svc_sock_names(buf, nfsd_serv, NULL);
+               unlock_kernel();
+               return len;
+       }
+       /* Either a single 'fd' number is written, in which
+        * case it must be for a socket of a supported family/protocol,
+        * and we use it as an nfsd socket, or
+        * A '-' followed by the 'name' of a socket in which case
+        * we close the socket.
+        */
+       if (isdigit(buf[0])) {
+               char *mesg = buf;
+               int fd;
+               int err;
+               err = get_int(&mesg, &fd);
+               if (err)
+                       return -EINVAL;
+               if (fd < 0)
+                       return -EINVAL;
+               err = nfsd_create_serv();
+               if (!err) {
+                       int proto = 0;
+                       err = svc_addsock(nfsd_serv, fd, buf, &proto);
+                       /* Decrease the count, but don't shutdown the
+                        * the service
+                        */
+                       if (err >= 0)
+                               lockd_up(proto);
+                       nfsd_serv->sv_nrthreads--;
+               }
+               return err;
+       }
+       if (buf[0] == '-') {
+               char *toclose = kstrdup(buf+1, GFP_KERNEL);
+               int len = 0;
+               if (!toclose)
+                       return -ENOMEM;
+               lock_kernel();
+               if (nfsd_serv)
+                       len = svc_sock_names(buf, nfsd_serv, toclose);
+               unlock_kernel();
+               kfree(toclose);
+               return len;
+       }
+       return -EINVAL;
+}
+
 #ifdef CONFIG_NFSD_V4
 extern time_t nfs4_leasetime(void);
 
@@ -485,6 +542,7 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
                [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
                [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
                [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
+               [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
 #ifdef CONFIG_NFSD_V4
                [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
                [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
@@ -494,10 +552,10 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
        return simple_fill_super(sb, 0x6e667364, nfsd_files);
 }
 
-static struct super_block *nfsd_get_sb(struct file_system_type *fs_type,
-       int flags, const char *dev_name, void *data)
+static int nfsd_get_sb(struct file_system_type *fs_type,
+       int flags, const char *dev_name, void *data, struct vfsmount *mnt)
 {
-       return get_sb_single(fs_type, flags, data, nfsd_fill_super);
+       return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt);
 }
 
 static struct file_system_type nfsd_fs_type = {