static void ntfs_getuser_update_vm (void *dest, ntfs_io *src, ntfs_size_t len)
{
struct ntfs_getuser_update_vm_s *p = src->param;
copy_from_user (dest, p->user, len);
update_vm_cache (p->ino, p->off, dest, len);
p->user += len;
p->off += len;
}
static int minix_file_write(struct inode * inode, struct file * filp, const char * buf, int count)
{
off_t pos;
int written,c;
struct buffer_head * bh;
char * p;
if (!inode) {
printk("minix_file_write: inode = NULL\n");
return -EINVAL;
}
if (!S_ISREG(inode->i_mode)) {
printk("minix_file_write: mode = %07o\n",inode->i_mode);
return -EINVAL;
}
if (filp->f_flags & O_APPEND)
pos = inode->i_size;
else
pos = filp->f_pos;
written = 0;
while (written < count) {
bh = minix_getblk(inode,pos/BLOCK_SIZE,1);
if (!bh) {
if (!written)
written = -ENOSPC;
break;
}
c = BLOCK_SIZE - (pos % BLOCK_SIZE);
if (c > count-written)
c = count-written;
if (c != BLOCK_SIZE && !buffer_uptodate(bh)) {
ll_rw_block(READ, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
brelse(bh);
if (!written)
written = -EIO;
break;
}
}
p = (pos % BLOCK_SIZE) + bh->b_data;
memcpy_fromfs(p,buf,c);
update_vm_cache(inode, pos, p, c);
mark_buffer_uptodate(bh, 1);
mark_buffer_dirty(bh, 0);
brelse(bh);
pos += c;
written += c;
buf += c;
}
if (pos > inode->i_size)
inode->i_size = pos;
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
filp->f_pos = pos;
inode->i_dirt = 1;
return written;
}
static int bext2_file_write (struct inode * inode, struct file * filp,
const char * buf, int count)
{
const loff_t two_gb = 2147483647;
loff_t pos;
off_t pos2;
long block;
int offset;
int written, c;
struct buffer_head * bh, *bufferlist[NBUF];
struct super_block * sb;
int err;
int i,buffercount,write_error;
write_error = buffercount = 0;
if (!inode) {
printk("bext2_file_write: inode = NULL\n");
return -EINVAL;
}
sb = inode->i_sb;
if (sb->s_flags & MS_RDONLY)
/*
* This fs has been automatically remounted ro because of errors
*/
return -ENOSPC;
if (!S_ISREG(inode->i_mode)) {
bext2_warning (sb, "bext2_file_write", "mode = %07o",
inode->i_mode);
return -EINVAL;
}
if (filp->f_flags & O_APPEND)
pos = inode->i_size;
else
pos = filp->f_pos;
pos2 = (off_t) pos;
/*
* If a file has been opened in synchronous mode, we have to ensure
* that meta-data will also be written synchronously. Thus, we
* set the i_osync field. This field is tested by the allocation
* routines.
*/
if (filp->f_flags & O_SYNC)
inode->u.ext2_i.i_osync++;
block = pos2 >> EXT2_BLOCK_SIZE_BITS(sb);
offset = pos2 & (sb->s_blocksize - 1);
c = sb->s_blocksize - offset;
written = 0;
while (count > 0) {
if (pos > two_gb) {
if (!written)
written = -EFBIG;
break;
}
bh = bext2_getblk (inode, block, 1, &err);
if (!bh) {
if (!written)
written = err;
break;
}
count -= c;
if (count < 0)
c += count;
if (c != sb->s_blocksize && !buffer_uptodate(bh)) {
ll_rw_block (READ, 1, &bh);
wait_on_buffer (bh);
if (!buffer_uptodate(bh)) {
brelse (bh);
if (!written)
written = -EIO;
break;
}
}
memcpy_fromfs (bh->b_data + offset, buf, c);
update_vm_cache(inode, pos, bh->b_data + offset, c);
pos2 += c;
pos += c;
written += c;
buf += c;
mark_buffer_uptodate(bh, 1);
mark_buffer_dirty(bh, 0);
if (filp->f_flags & O_SYNC)
bufferlist[buffercount++] = bh;
else
brelse(bh);
if (buffercount == NBUF){
ll_rw_block(WRITE, buffercount, bufferlist);
for(i=0; i<buffercount; i++){
wait_on_buffer(bufferlist[i]);
if (!buffer_uptodate(bufferlist[i]))
write_error=1;
brelse(bufferlist[i]);
}
buffercount=0;
}
if(write_error)
break;
block++;
offset = 0;
c = sb->s_blocksize;
}
if ( buffercount ){
ll_rw_block(WRITE, buffercount, bufferlist);
for(i=0; i<buffercount; i++){
wait_on_buffer(bufferlist[i]);
if (!buffer_uptodate(bufferlist[i]))
write_error=1;
brelse(bufferlist[i]);
}
}
if (pos > inode->i_size)
inode->i_size = pos;
if (filp->f_flags & O_SYNC)
inode->u.ext2_i.i_osync--;
inode->i_ctime = inode->i_mtime = CURRENT_TIME;
filp->f_pos = pos;
inode->i_dirt = 1;
return written;
}
static ssize_t
affs_file_write_ofs(struct file *filp, const char *buf, size_t count, loff_t *ppos)
{
struct inode *inode = filp->f_dentry->d_inode;
off_t pos;
ssize_t written;
ssize_t c;
ssize_t blocksize;
struct buffer_head *bh;
char *p;
pr_debug("AFFS: file_write_ofs(ino=%lu,pos=%lu,count=%d)\n",inode->i_ino,
(unsigned long)*ppos,count);
if (!count)
return 0;
if (!inode) {
affs_error(inode->i_sb,"file_write_ofs","Inode = NULL");
return -EINVAL;
}
if (!S_ISREG(inode->i_mode)) {
affs_error(inode->i_sb,"file_write_ofs",
"Trying to write to non-regular file (mode=%07o)",
inode->i_mode);
return -EINVAL;
}
if (!inode->u.affs_i.i_ec && alloc_ext_cache(inode))
return -ENOMEM;
if (filp->f_flags & O_APPEND)
pos = inode->i_size;
else
pos = *ppos;
bh = NULL;
blocksize = AFFS_I2BSIZE(inode) - 24;
written = 0;
while (written < count) {
bh = affs_getblock(inode,pos / blocksize);
if (!bh) {
if (!written)
written = -ENOSPC;
break;
}
c = blocksize - (pos % blocksize);
if (c > count - written)
c = count - written;
if (c != blocksize && !buffer_uptodate(bh)) {
ll_rw_block(READ,1,&bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
affs_brelse(bh);
if (!written)
written = -EIO;
break;
}
}
p = (pos % blocksize) + bh->b_data + 24;
c -= copy_from_user(p,buf,c);
if (!c) {
affs_brelse(bh);
if (!written)
written = -EFAULT;
break;
}
update_vm_cache(inode,pos,p,c);
pos += c;
buf += c;
written += c;
DATA_FRONT(bh)->data_size = cpu_to_be32(be32_to_cpu(DATA_FRONT(bh)->data_size) + c);
affs_fix_checksum(AFFS_I2BSIZE(inode),bh->b_data,5);
mark_buffer_uptodate(bh,1);
mark_buffer_dirty(bh,0);
affs_brelse(bh);
}
if (pos > inode->i_size)
inode->i_size = pos;
*ppos = pos;
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);
return written;
}
