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The VM fs interface has changed to better match the one of the device interface.

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Added an fs call for the file cache.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8852 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-09-04 17:52:32 +00:00
parent 14d725bb50
commit d5a48f5dcf
1 changed files with 21 additions and 14 deletions
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35
src/add-ons/kernel/file_systems/bfs/kernel_interface.cpp
View File

@ -306,15 +306,17 @@ bfs_remove_vnode(void *_ns, void *_node, bool reenter)
}
static status_t
static bool
bfs_can_page(fs_volume _fs, fs_vnode _v)
{
return 0;
// ToDo: we're obviously not even asked...
return false;
}
static ssize_t
bfs_read_pages(fs_volume _fs, fs_vnode _node, iovecs *vecs, off_t pos)
static status_t
bfs_read_pages(fs_volume _fs, fs_vnode _node, off_t pos,
const iovec *vecs, size_t count, size_t *_numBytes)
{
Inode *inode = (Inode *)_node;
@ -323,21 +325,24 @@ bfs_read_pages(fs_volume _fs, fs_vnode _node, iovecs *vecs, off_t pos)
ReadLocked locked(inode->Lock());
for (uint32 i = 0; i < vecs->num; i++) {
for (uint32 i = 0; i < count; i++) {
if (pos >= inode->Size()) {
memset(vecs->vec[i].iov_base, 0, vecs->vec[i].iov_len);
pos += vecs->vec[i].iov_len;
memset(vecs[i].iov_base, 0, vecs[i].iov_len);
pos += vecs[i].iov_len;
*_numBytes -= vecs[i].iov_len;
} else {
uint32 length = vecs->vec[i].iov_len;
uint32 length = vecs[i].iov_len;
if (length > inode->Size() - pos)
length = inode->Size() - pos;
inode->ReadAt(pos, (uint8 *)vecs->vec[i].iov_base, &length);
inode->ReadAt(pos, (uint8 *)vecs[i].iov_base, &length);
if (length < vecs->vec[i].iov_len)
memset((char *)vecs->vec[i].iov_base + length, 0, vecs->vec[i].iov_len - length);
if (length < vecs[i].iov_len) {
memset((char *)vecs[i].iov_base + length, 0, vecs[i].iov_len - length);
*_numBytes -= vecs[i].iov_len - length;
}
pos += vecs->vec[i].iov_len;
pos += vecs[i].iov_len;
}
}
@ -345,8 +350,8 @@ bfs_read_pages(fs_volume _fs, fs_vnode _node, iovecs *vecs, off_t pos)
}
static ssize_t
bfs_write_pages(fs_volume _fs, fs_vnode _v, iovecs *vecs, off_t pos)
static status_t
bfs_write_pages(fs_volume _fs, fs_vnode _v, off_t pos, const iovec *vecs, size_t count, size_t *_numBytes)
{
return EPERM;
}
@ -2001,6 +2006,8 @@ static file_system_info sBeFileSystem = {
&bfs_can_page,
&bfs_read_pages,
&bfs_write_pages,
NULL, // get_file_map()
&bfs_ioctl, // ioctl
&bfs_fsync, // sync