summaryrefslogtreecommitdiff
path: root/fs/ncpfs/file.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ncpfs/file.c')
-rw-r--r--fs/ncpfs/file.c298
1 files changed, 0 insertions, 298 deletions
diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
deleted file mode 100644
index 122e260247f5..000000000000
--- a/fs/ncpfs/file.c
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
- * 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 <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/vmalloc.h>
-#include <linux/sched.h>
-
-#include "ncp_fs.h"
-
-static int ncp_fsync(struct file *file, loff_t start, loff_t end, int datasync)
-{
- return filemap_write_and_wait_range(file->f_mapping, start, end);
-}
-
-/*
- * 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;
- mutex_lock(&NCP_FINFO(inode)->open_mutex);
- 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:
- mutex_unlock(&NCP_FINFO(inode)->open_mutex);
-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_path.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);
-
- 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_path.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 ((ssize_t) count < 0)
- return -EINVAL;
- pos = *ppos;
- if (file->f_flags & O_APPEND) {
- pos = i_size_read(inode);
- }
-
- if (pos + count > MAX_NON_LFS && !(file->f_flags&O_LARGEFILE)) {
- if (pos >= MAX_NON_LFS) {
- 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) {
- 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;
-
- errno = file_update_time(file);
- if (errno)
- goto outrel;
-
- 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);
-
- *ppos = pos;
-
- if (pos > i_size_read(inode)) {
- mutex_lock(&inode->i_mutex);
- if (pos > i_size_read(inode))
- i_size_write(inode, pos);
- mutex_unlock(&inode->i_mutex);
- }
- 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;
-}
-
-const struct file_operations ncp_file_operations =
-{
- .llseek = generic_file_llseek,
- .read = ncp_file_read,
- .write = ncp_file_write,
- .unlocked_ioctl = ncp_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ncp_compat_ioctl,
-#endif
- .mmap = ncp_mmap,
- .release = ncp_release,
- .fsync = ncp_fsync,
-};
-
-const struct inode_operations ncp_file_inode_operations =
-{
- .setattr = ncp_notify_change,
-};
generated by cgit (git 2.34.1) at 2025-12-21 21:45:29 +0000