Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 300 insertions, 0 deletions

diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
new file mode 100644
index 000000000000..4947d9b11fc1
--- /dev/null
+++ b/fs/ncpfs/file.c
@@ -0,0 +1,300 @@
+/*
+ *  file.c
+ *
+ *  Copyright (C) 1995, 1996 by Volker Lendecke
+ *  Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
+ *
+ */
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <linux/time.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/smp_lock.h>
+
+#include <linux/ncp_fs.h>
+#include "ncplib_kernel.h"
+
+static int ncp_fsync(struct file *file, struct dentry *dentry, int datasync)
+{
+        return 0;
+}
+
+/*
+ * Open a file with the specified read/write mode.
+ */
+int ncp_make_open(struct inode *inode, int right)
+{
+        int error;
+        int access;
+
+        error = -EINVAL;
+        if (!inode) {
+                printk(KERN_ERR "ncp_make_open: got NULL inode\n");
+                goto out;
+        }
+
+        DPRINTK("ncp_make_open: opened=%d, volume # %u, dir entry # %u\n",
+                atomic_read(&NCP_FINFO(inode)->opened), 
+                NCP_FINFO(inode)->volNumber, 
+                NCP_FINFO(inode)->dirEntNum);
+        error = -EACCES;
+        down(&NCP_FINFO(inode)->open_sem);
+        if (!atomic_read(&NCP_FINFO(inode)->opened)) {
+                struct ncp_entry_info finfo;
+                int result;
+
+                /* tries max. rights */
+                finfo.access = O_RDWR;
+                result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
+                                        inode, NULL, OC_MODE_OPEN,
+                                        0, AR_READ | AR_WRITE, &finfo);
+                if (!result)
+                        goto update;
+                /* RDWR did not succeeded, try readonly or writeonly as requested */
+                switch (right) {
+                        case O_RDONLY:
+                                finfo.access = O_RDONLY;
+                                result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
+                                        inode, NULL, OC_MODE_OPEN,
+                                        0, AR_READ, &finfo);
+                                break;
+                        case O_WRONLY:
+                                finfo.access = O_WRONLY;
+                                result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
+                                        inode, NULL, OC_MODE_OPEN,
+                                        0, AR_WRITE, &finfo);
+                                break;
+                }
+                if (result) {
+                        PPRINTK("ncp_make_open: failed, result=%d\n", result);
+                        goto out_unlock;
+                }
+                /*
+                 * Update the inode information.
+                 */
+        update:
+                ncp_update_inode(inode, &finfo);
+                atomic_set(&NCP_FINFO(inode)->opened, 1);
+        }
+
+        access = NCP_FINFO(inode)->access;
+        PPRINTK("ncp_make_open: file open, access=%x\n", access);
+        if (access == right || access == O_RDWR) {
+                atomic_inc(&NCP_FINFO(inode)->opened);
+                error = 0;
+        }
+
+out_unlock:
+        up(&NCP_FINFO(inode)->open_sem);
+out:
+        return error;
+}
+
+static ssize_t
+ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+        struct dentry *dentry = file->f_dentry;
+        struct inode *inode = dentry->d_inode;
+        size_t already_read = 0;
+        off_t pos;
+        size_t bufsize;
+        int error;
+        void* freepage;
+        size_t freelen;
+
+        DPRINTK("ncp_file_read: enter %s/%s\n",
+                dentry->d_parent->d_name.name, dentry->d_name.name);
+
+        if (!ncp_conn_valid(NCP_SERVER(inode)))
+                return -EIO;
+
+        pos = *ppos;
+
+        if ((ssize_t) count < 0) {
+                return -EINVAL;
+        }
+        if (!count)
+                return 0;
+        if (pos > inode->i_sb->s_maxbytes)
+                return 0;
+        if (pos + count > inode->i_sb->s_maxbytes) {
+                count = inode->i_sb->s_maxbytes - pos;
+        }
+
+        error = ncp_make_open(inode, O_RDONLY);
+        if (error) {
+                DPRINTK(KERN_ERR "ncp_file_read: open failed, error=%d\n", error);
+                return error;
+        }
+
+        bufsize = NCP_SERVER(inode)->buffer_size;
+
+        error = -EIO;
+        freelen = ncp_read_bounce_size(bufsize);
+        freepage = vmalloc(freelen);
+        if (!freepage)
+                goto outrel;
+        error = 0;
+        /* First read in as much as possible for each bufsize. */
+        while (already_read < count) {
+                int read_this_time;
+                size_t to_read = min_t(unsigned int,
+                                     bufsize - (pos % bufsize),
+                                     count - already_read);
+
+                error = ncp_read_bounce(NCP_SERVER(inode),
+                                NCP_FINFO(inode)->file_handle,
+                                pos, to_read, buf, &read_this_time, 
+                                freepage, freelen);
+                if (error) {
+                        error = -EIO;   /* NW errno -> Linux errno */
+                        break;
+                }
+                pos += read_this_time;
+                buf += read_this_time;
+                already_read += read_this_time;
+
+                if (read_this_time != to_read) {
+                        break;
+                }
+        }
+        vfree(freepage);
+
+        *ppos = pos;
+
+        file_accessed(file);
+
+        DPRINTK("ncp_file_read: exit %s/%s\n",
+                dentry->d_parent->d_name.name, dentry->d_name.name);
+outrel:
+        ncp_inode_close(inode);         
+        return already_read ? already_read : error;
+}
+
+static ssize_t
+ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+{
+        struct dentry *dentry = file->f_dentry;
+        struct inode *inode = dentry->d_inode;
+        size_t already_written = 0;
+        off_t pos;
+        size_t bufsize;
+        int errno;
+        void* bouncebuffer;
+
+        DPRINTK("ncp_file_write: enter %s/%s\n",
+                dentry->d_parent->d_name.name, dentry->d_name.name);
+        if (!ncp_conn_valid(NCP_SERVER(inode)))
+                return -EIO;
+        if ((ssize_t) count < 0)
+                return -EINVAL;
+        pos = *ppos;
+        if (file->f_flags & O_APPEND) {
+                pos = inode->i_size;
+        }
+
+        if (pos + count > MAX_NON_LFS && !(file->f_flags&O_LARGEFILE)) {
+                if (pos >= MAX_NON_LFS) {
+                        send_sig(SIGXFSZ, current, 0);
+                        return -EFBIG;
+                }
+                if (count > MAX_NON_LFS - (u32)pos) {
+                        count = MAX_NON_LFS - (u32)pos;
+                }
+        }
+        if (pos >= inode->i_sb->s_maxbytes) {
+                if (count || pos > inode->i_sb->s_maxbytes) {
+                        send_sig(SIGXFSZ, current, 0);
+                        return -EFBIG;
+                }
+        }
+        if (pos + count > inode->i_sb->s_maxbytes) {
+                count = inode->i_sb->s_maxbytes - pos;
+        }
+        
+        if (!count)
+                return 0;
+        errno = ncp_make_open(inode, O_WRONLY);
+        if (errno) {
+                DPRINTK(KERN_ERR "ncp_file_write: open failed, error=%d\n", errno);
+                return errno;
+        }
+        bufsize = NCP_SERVER(inode)->buffer_size;
+
+        already_written = 0;
+
+        bouncebuffer = vmalloc(bufsize);
+        if (!bouncebuffer) {
+                errno = -EIO;   /* -ENOMEM */
+                goto outrel;
+        }
+        while (already_written < count) {
+                int written_this_time;
+                size_t to_write = min_t(unsigned int,
+                                      bufsize - (pos % bufsize),
+                                      count - already_written);
+
+                if (copy_from_user(bouncebuffer, buf, to_write)) {
+                        errno = -EFAULT;
+                        break;
+                }
+                if (ncp_write_kernel(NCP_SERVER(inode), 
+                    NCP_FINFO(inode)->file_handle,
+                    pos, to_write, bouncebuffer, &written_this_time) != 0) {
+                        errno = -EIO;
+                        break;
+                }
+                pos += written_this_time;
+                buf += written_this_time;
+                already_written += written_this_time;
+
+                if (written_this_time != to_write) {
+                        break;
+                }
+        }
+        vfree(bouncebuffer);
+
+        inode_update_time(inode, 1);
+
+        *ppos = pos;
+
+        if (pos > inode->i_size) {
+                inode->i_size = pos;
+        }
+        DPRINTK("ncp_file_write: exit %s/%s\n",
+                dentry->d_parent->d_name.name, dentry->d_name.name);
+outrel:
+        ncp_inode_close(inode);         
+        return already_written ? already_written : errno;
+}
+
+static int ncp_release(struct inode *inode, struct file *file) {
+        if (ncp_make_closed(inode)) {
+                DPRINTK("ncp_release: failed to close\n");
+        }
+        return 0;
+}
+
+struct file_operations ncp_file_operations =
+{
+        .llseek         = remote_llseek,
+        .read           = ncp_file_read,
+        .write          = ncp_file_write,
+        .ioctl          = ncp_ioctl,
+        .mmap           = ncp_mmap,
+        .release        = ncp_release,
+        .fsync          = ncp_fsync,
+};
+
+struct inode_operations ncp_file_inode_operations =
+{
+        .setattr        = ncp_notify_change,
+};