Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
new file mode 100644
index 0000000..161afdc
--- /dev/null
+++ b/fs/nfsd/nfsctl.c
@@ -0,0 +1,438 @@
+/*
+ * linux/fs/nfsd/nfsctl.c
+ *
+ * Syscall interface to knfsd.
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include <linux/linkage.h>
+#include <linux/time.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/fcntl.h>
+#include <linux/net.h>
+#include <linux/in.h>
+#include <linux/syscalls.h>
+#include <linux/unistd.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/pagemap.h>
+#include <linux/init.h>
+
+#include <linux/nfs.h>
+#include <linux/nfsd_idmap.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/cache.h>
+#include <linux/nfsd/xdr.h>
+#include <linux/nfsd/syscall.h>
+#include <linux/nfsd/interface.h>
+
+#include <asm/uaccess.h>
+
+/*
+ * We have a single directory with 9 nodes in it.
+ */
+enum {
+ NFSD_Root = 1,
+ NFSD_Svc,
+ NFSD_Add,
+ NFSD_Del,
+ NFSD_Export,
+ NFSD_Unexport,
+ NFSD_Getfd,
+ NFSD_Getfs,
+ NFSD_List,
+ NFSD_Fh,
+ NFSD_Threads,
+ NFSD_Leasetime,
+};
+
+/*
+ * write() for these nodes.
+ */
+static ssize_t write_svc(struct file *file, char *buf, size_t size);
+static ssize_t write_add(struct file *file, char *buf, size_t size);
+static ssize_t write_del(struct file *file, char *buf, size_t size);
+static ssize_t write_export(struct file *file, char *buf, size_t size);
+static ssize_t write_unexport(struct file *file, char *buf, size_t size);
+static ssize_t write_getfd(struct file *file, char *buf, size_t size);
+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_leasetime(struct file *file, char *buf, size_t size);
+
+static ssize_t (*write_op[])(struct file *, char *, size_t) = {
+ [NFSD_Svc] = write_svc,
+ [NFSD_Add] = write_add,
+ [NFSD_Del] = write_del,
+ [NFSD_Export] = write_export,
+ [NFSD_Unexport] = write_unexport,
+ [NFSD_Getfd] = write_getfd,
+ [NFSD_Getfs] = write_getfs,
+ [NFSD_Fh] = write_filehandle,
+ [NFSD_Threads] = write_threads,
+ [NFSD_Leasetime] = write_leasetime,
+};
+
+static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
+{
+ ino_t ino = file->f_dentry->d_inode->i_ino;
+ char *data;
+ ssize_t rv;
+
+ if (ino >= sizeof(write_op)/sizeof(write_op[0]) || !write_op[ino])
+ return -EINVAL;
+
+ data = simple_transaction_get(file, buf, size);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ rv = write_op[ino](file, data, size);
+ if (rv>0) {
+ simple_transaction_set(file, rv);
+ rv = size;
+ }
+ return rv;
+}
+
+static struct file_operations transaction_ops = {
+ .write = nfsctl_transaction_write,
+ .read = simple_transaction_read,
+ .release = simple_transaction_release,
+};
+
+extern struct seq_operations nfs_exports_op;
+static int exports_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &nfs_exports_op);
+}
+
+static struct file_operations exports_operations = {
+ .open = exports_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+/*----------------------------------------------------------------------------*/
+/*
+ * payload - write methods
+ * If the method has a response, the response should be put in buf,
+ * and the length returned. Otherwise return 0 or and -error.
+ */
+
+static ssize_t write_svc(struct file *file, char *buf, size_t size)
+{
+ struct nfsctl_svc *data;
+ if (size < sizeof(*data))
+ return -EINVAL;
+ data = (struct nfsctl_svc*) buf;
+ return nfsd_svc(data->svc_port, data->svc_nthreads);
+}
+
+static ssize_t write_add(struct file *file, char *buf, size_t size)
+{
+ struct nfsctl_client *data;
+ if (size < sizeof(*data))
+ return -EINVAL;
+ data = (struct nfsctl_client *)buf;
+ return exp_addclient(data);
+}
+
+static ssize_t write_del(struct file *file, char *buf, size_t size)
+{
+ struct nfsctl_client *data;
+ if (size < sizeof(*data))
+ return -EINVAL;
+ data = (struct nfsctl_client *)buf;
+ return exp_delclient(data);
+}
+
+static ssize_t write_export(struct file *file, char *buf, size_t size)
+{
+ struct nfsctl_export *data;
+ if (size < sizeof(*data))
+ return -EINVAL;
+ data = (struct nfsctl_export*)buf;
+ return exp_export(data);
+}
+
+static ssize_t write_unexport(struct file *file, char *buf, size_t size)
+{
+ struct nfsctl_export *data;
+
+ if (size < sizeof(*data))
+ return -EINVAL;
+ data = (struct nfsctl_export*)buf;
+ return exp_unexport(data);
+}
+
+static ssize_t write_getfs(struct file *file, char *buf, size_t size)
+{
+ struct nfsctl_fsparm *data;
+ struct sockaddr_in *sin;
+ struct auth_domain *clp;
+ int err = 0;
+ struct knfsd_fh *res;
+
+ if (size < sizeof(*data))
+ return -EINVAL;
+ data = (struct nfsctl_fsparm*)buf;
+ err = -EPROTONOSUPPORT;
+ if (data->gd_addr.sa_family != AF_INET)
+ goto out;
+ sin = (struct sockaddr_in *)&data->gd_addr;
+ if (data->gd_maxlen > NFS3_FHSIZE)
+ data->gd_maxlen = NFS3_FHSIZE;
+
+ res = (struct knfsd_fh*)buf;
+
+ exp_readlock();
+ if (!(clp = auth_unix_lookup(sin->sin_addr)))
+ err = -EPERM;
+ else {
+ err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
+ auth_domain_put(clp);
+ }
+ exp_readunlock();
+ if (err == 0)
+ err = res->fh_size + (int)&((struct knfsd_fh*)0)->fh_base;
+ out:
+ return err;
+}
+
+static ssize_t write_getfd(struct file *file, char *buf, size_t size)
+{
+ struct nfsctl_fdparm *data;
+ struct sockaddr_in *sin;
+ struct auth_domain *clp;
+ int err = 0;
+ struct knfsd_fh fh;
+ char *res;
+
+ if (size < sizeof(*data))
+ return -EINVAL;
+ data = (struct nfsctl_fdparm*)buf;
+ err = -EPROTONOSUPPORT;
+ if (data->gd_addr.sa_family != AF_INET)
+ goto out;
+ err = -EINVAL;
+ if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
+ goto out;
+
+ res = buf;
+ sin = (struct sockaddr_in *)&data->gd_addr;
+ exp_readlock();
+ if (!(clp = auth_unix_lookup(sin->sin_addr)))
+ err = -EPERM;
+ else {
+ err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
+ auth_domain_put(clp);
+ }
+ exp_readunlock();
+
+ if (err == 0) {
+ memset(res,0, NFS_FHSIZE);
+ memcpy(res, &fh.fh_base, fh.fh_size);
+ err = NFS_FHSIZE;
+ }
+ out:
+ return err;
+}
+
+static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
+{
+ /* request is:
+ * domain path maxsize
+ * response is
+ * filehandle
+ *
+ * qword quoting is used, so filehandle will be \x....
+ */
+ char *dname, *path;
+ int maxsize;
+ char *mesg = buf;
+ int len;
+ struct auth_domain *dom;
+ struct knfsd_fh fh;
+
+ if (buf[size-1] != '\n')
+ return -EINVAL;
+ buf[size-1] = 0;
+
+ dname = mesg;
+ len = qword_get(&mesg, dname, size);
+ if (len <= 0) return -EINVAL;
+
+ path = dname+len+1;
+ len = qword_get(&mesg, path, size);
+ if (len <= 0) return -EINVAL;
+
+ len = get_int(&mesg, &maxsize);
+ if (len)
+ return len;
+
+ if (maxsize < NFS_FHSIZE)
+ return -EINVAL;
+ if (maxsize > NFS3_FHSIZE)
+ maxsize = NFS3_FHSIZE;
+
+ if (qword_get(&mesg, mesg, size)>0)
+ return -EINVAL;
+
+ /* we have all the words, they are in buf.. */
+ dom = unix_domain_find(dname);
+ if (!dom)
+ return -ENOMEM;
+
+ len = exp_rootfh(dom, path, &fh, maxsize);
+ auth_domain_put(dom);
+ if (len)
+ return len;
+
+ mesg = buf; len = SIMPLE_TRANSACTION_LIMIT;
+ qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
+ mesg[-1] = '\n';
+ return mesg - buf;
+}
+
+extern int nfsd_nrthreads(void);
+
+static ssize_t write_threads(struct file *file, char *buf, size_t size)
+{
+ /* if size > 0, look for a number of threads and call nfsd_svc
+ * then write out number of threads as reply
+ */
+ char *mesg = buf;
+ int rv;
+ if (size > 0) {
+ int newthreads;
+ rv = get_int(&mesg, &newthreads);
+ if (rv)
+ return rv;
+ if (newthreads <0)
+ return -EINVAL;
+ rv = nfsd_svc(2049, newthreads);
+ if (rv)
+ return rv;
+ }
+ sprintf(buf, "%d\n", nfsd_nrthreads());
+ return strlen(buf);
+}
+
+extern time_t nfs4_leasetime(void);
+
+static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
+{
+ /* if size > 10 seconds, call
+ * nfs4_reset_lease() then write out the new lease (seconds) as reply
+ */
+ char *mesg = buf;
+ int rv;
+
+ if (size > 0) {
+ int lease;
+ rv = get_int(&mesg, &lease);
+ if (rv)
+ return rv;
+ if (lease < 10 || lease > 3600)
+ return -EINVAL;
+ nfs4_reset_lease(lease);
+ }
+ sprintf(buf, "%ld\n", nfs4_lease_time());
+ return strlen(buf);
+}
+
+/*----------------------------------------------------------------------------*/
+/*
+ * populating the filesystem.
+ */
+
+static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
+{
+ static struct tree_descr nfsd_files[] = {
+ [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
+ [NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
+ [NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
+ [NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
+ [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
+ [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
+ [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
+ [NFSD_List] = {"exports", &exports_operations, S_IRUGO},
+ [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
+ [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
+#ifdef CONFIG_NFSD_V4
+ [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
+#endif
+ /* last one */ {""}
+ };
+ 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)
+{
+ return get_sb_single(fs_type, flags, data, nfsd_fill_super);
+}
+
+static struct file_system_type nfsd_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "nfsd",
+ .get_sb = nfsd_get_sb,
+ .kill_sb = kill_litter_super,
+};
+
+static int __init init_nfsd(void)
+{
+ int retval;
+ printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
+
+ nfsd_stat_init(); /* Statistics */
+ nfsd_cache_init(); /* RPC reply cache */
+ nfsd_export_init(); /* Exports table */
+ nfsd_lockd_init(); /* lockd->nfsd callbacks */
+#ifdef CONFIG_NFSD_V4
+ nfsd_idmap_init(); /* Name to ID mapping */
+#endif /* CONFIG_NFSD_V4 */
+ if (proc_mkdir("fs/nfs", NULL)) {
+ struct proc_dir_entry *entry;
+ entry = create_proc_entry("fs/nfs/exports", 0, NULL);
+ if (entry)
+ entry->proc_fops = &exports_operations;
+ }
+ retval = register_filesystem(&nfsd_fs_type);
+ if (retval) {
+ nfsd_export_shutdown();
+ nfsd_cache_shutdown();
+ remove_proc_entry("fs/nfs/exports", NULL);
+ remove_proc_entry("fs/nfs", NULL);
+ nfsd_stat_shutdown();
+ nfsd_lockd_shutdown();
+ }
+ return retval;
+}
+
+static void __exit exit_nfsd(void)
+{
+ nfsd_export_shutdown();
+ nfsd_cache_shutdown();
+ remove_proc_entry("fs/nfs/exports", NULL);
+ remove_proc_entry("fs/nfs", NULL);
+ nfsd_stat_shutdown();
+ nfsd_lockd_shutdown();
+#ifdef CONFIG_NFSD_V4
+ nfsd_idmap_shutdown();
+#endif /* CONFIG_NFSD_V4 */
+ unregister_filesystem(&nfsd_fs_type);
+}
+
+MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
+MODULE_LICENSE("GPL");
+module_init(init_nfsd)
+module_exit(exit_nfsd)