static void
cifs_std_info_to_fattr(struct cifs_fattr *fattr, FIND_FILE_STANDARD_INFO *info,
struct cifs_sb_info *cifs_sb)
{
int offset = cifs_sb_master_tcon(cifs_sb)->ses->server->timeAdj;
memset(fattr, 0, sizeof(*fattr));
fattr->cf_atime = cnvrtDosUnixTm(info->LastAccessDate,
info->LastAccessTime, offset);
fattr->cf_ctime = cnvrtDosUnixTm(info->LastWriteDate,
info->LastWriteTime, offset);
fattr->cf_mtime = cnvrtDosUnixTm(info->LastWriteDate,
info->LastWriteTime, offset);
fattr->cf_cifsattrs = le16_to_cpu(info->Attributes);
fattr->cf_bytes = le32_to_cpu(info->AllocationSize);
fattr->cf_eof = le32_to_cpu(info->DataSize);
cifs_fill_common_info(fattr, cifs_sb);
}
static void fill_in_inode(struct inode *tmp_inode, int new_buf_type,
char *buf, unsigned int *pobject_type, int isNewInode)
{
loff_t local_size;
struct timespec local_mtime;
struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
__u32 attr;
__u64 allocation_size;
__u64 end_of_file;
umode_t default_mode;
/* save mtime and size */
local_mtime = tmp_inode->i_mtime;
local_size = tmp_inode->i_size;
if (new_buf_type) {
FILE_DIRECTORY_INFO *pfindData = (FILE_DIRECTORY_INFO *)buf;
attr = le32_to_cpu(pfindData->ExtFileAttributes);
allocation_size = le64_to_cpu(pfindData->AllocationSize);
end_of_file = le64_to_cpu(pfindData->EndOfFile);
tmp_inode->i_atime =
cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
tmp_inode->i_mtime =
cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
tmp_inode->i_ctime =
cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
} else { /* legacy, OS2 and DOS style */
/* struct timespec ts;*/
FIND_FILE_STANDARD_INFO *pfindData =
(FIND_FILE_STANDARD_INFO *)buf;
tmp_inode->i_mtime = cnvrtDosUnixTm(
le16_to_cpu(pfindData->LastWriteDate),
le16_to_cpu(pfindData->LastWriteTime));
tmp_inode->i_atime = cnvrtDosUnixTm(
le16_to_cpu(pfindData->LastAccessDate),
le16_to_cpu(pfindData->LastAccessTime));
tmp_inode->i_ctime = cnvrtDosUnixTm(
le16_to_cpu(pfindData->LastWriteDate),
le16_to_cpu(pfindData->LastWriteTime));
AdjustForTZ(cifs_sb->tcon, tmp_inode);
attr = le16_to_cpu(pfindData->Attributes);
allocation_size = le32_to_cpu(pfindData->AllocationSize);
end_of_file = le32_to_cpu(pfindData->DataSize);
}
/* Linux can not store file creation time unfortunately so ignore it */
cifsInfo->cifsAttrs = attr;
#ifdef CONFIG_CIFS_EXPERIMENTAL
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
/* get more accurate mode via ACL - so force inode refresh */
cifsInfo->time = 0;
} else
#endif /* CONFIG_CIFS_EXPERIMENTAL */
cifsInfo->time = jiffies;
/* treat dos attribute of read-only as read-only mode bit e.g. 555? */
/* 2767 perms - indicate mandatory locking */
/* BB fill in uid and gid here? with help from winbind?
or retrieve from NTFS stream extended attribute */
if (atomic_read(&cifsInfo->inUse) == 0) {
tmp_inode->i_uid = cifs_sb->mnt_uid;
tmp_inode->i_gid = cifs_sb->mnt_gid;
}
if (attr & ATTR_DIRECTORY)
default_mode = cifs_sb->mnt_dir_mode;
else
default_mode = cifs_sb->mnt_file_mode;
/* set initial permissions */
if ((atomic_read(&cifsInfo->inUse) == 0) ||
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
tmp_inode->i_mode = default_mode;
else {
/* just reenable write bits if !ATTR_READONLY */
if ((tmp_inode->i_mode & S_IWUGO) == 0 &&
(attr & ATTR_READONLY) == 0)
tmp_inode->i_mode |= (S_IWUGO & default_mode);
tmp_inode->i_mode &= ~S_IFMT;
}
/* clear write bits if ATTR_READONLY is set */
if (attr & ATTR_READONLY)
tmp_inode->i_mode &= ~S_IWUGO;
/* set inode type */
if ((attr & ATTR_SYSTEM) &&
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) {
if (end_of_file == 0) {
tmp_inode->i_mode |= S_IFIFO;
*pobject_type = DT_FIFO;
} else {
/*
* trying to get the type can be slow, so just call
* this a regular file for now, and mark for reval
*/
tmp_inode->i_mode |= S_IFREG;
*pobject_type = DT_REG;
cifsInfo->time = 0;
}
} else {
if (attr & ATTR_DIRECTORY) {
tmp_inode->i_mode |= S_IFDIR;
*pobject_type = DT_DIR;
} else {
tmp_inode->i_mode |= S_IFREG;
*pobject_type = DT_REG;
}
}
/* can not fill in nlink here as in qpathinfo version and Unx search */
if (atomic_read(&cifsInfo->inUse) == 0)
atomic_set(&cifsInfo->inUse, 1);
spin_lock(&tmp_inode->i_lock);
if (is_size_safe_to_change(cifsInfo, end_of_file)) {
/* can not safely change the file size here if the
client is writing to it due to potential races */
i_size_write(tmp_inode, end_of_file);
/* 512 bytes (2**9) is the fake blocksize that must be used */
/* for this calculation, even though the reported blocksize is larger */
tmp_inode->i_blocks = (512 - 1 + allocation_size) >> 9;
}
spin_unlock(&tmp_inode->i_lock);
if (allocation_size < end_of_file)
cFYI(1, ("May be sparse file, allocation less than file size"));
cFYI(1, ("File Size %ld and blocks %llu",
(unsigned long)tmp_inode->i_size,
(unsigned long long)tmp_inode->i_blocks));
if (S_ISREG(tmp_inode->i_mode)) {
cFYI(1, ("File inode"));
tmp_inode->i_op = &cifs_file_inode_ops;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
else
tmp_inode->i_fop = &cifs_file_direct_ops;
} else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
tmp_inode->i_fop = &cifs_file_nobrl_ops;
else
tmp_inode->i_fop = &cifs_file_ops;
if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
(cifs_sb->tcon->ses->server->maxBuf <
PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
else
tmp_inode->i_data.a_ops = &cifs_addr_ops;
if (isNewInode)
return; /* No sense invalidating pages for new inode
since have not started caching readahead file
data yet */
if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
(local_size == tmp_inode->i_size)) {
cFYI(1, ("inode exists but unchanged"));
} else {
/* file may have changed on server */
cFYI(1, ("invalidate inode, readdir detected change"));
invalidate_remote_inode(tmp_inode);
}
} else if (S_ISDIR(tmp_inode->i_mode)) {
cFYI(1, ("Directory inode"));
tmp_inode->i_op = &cifs_dir_inode_ops;
tmp_inode->i_fop = &cifs_dir_ops;
} else if (S_ISLNK(tmp_inode->i_mode)) {
cFYI(1, ("Symbolic Link inode"));
tmp_inode->i_op = &cifs_symlink_inode_ops;
} else {
cFYI(1, ("Init special inode"));
init_special_inode(tmp_inode, tmp_inode->i_mode,
tmp_inode->i_rdev);
}
}
__le64 cnvrtDosCifsTm(__u16 date, __u16 time)
{
return cpu_to_le64(cifs_UnixTimeToNT(cnvrtDosUnixTm(date, time)));
}
