static struct dirent *dirsort_readdir(vfs_handle_struct *handle,
DIR *dirp,
SMB_STRUCT_STAT *sbuf)
{
struct dirsort_privates *data = NULL;
struct timespec current_mtime;
SMB_VFS_HANDLE_GET_DATA(handle, data, struct dirsort_privates,
return NULL);
while(data && (data->source_directory != dirp)) {
data = data->next;
}
if (data == NULL) {
return NULL;
}
if (get_sorted_dir_mtime(handle, data, ¤t_mtime) == false) {
return NULL;
}
/* throw away cache and re-read the directory if we've changed */
if (timespec_compare(¤t_mtime, &data->mtime)) {
SMB_VFS_NEXT_REWINDDIR(handle, data->source_directory);
open_and_sort_dir(handle, data);
}
if (data->pos >= data->number_of_entries) {
return NULL;
}
return &data->directory_list[data->pos++];
}
static void dirsort_seekdir(vfs_handle_struct *handle, DIR *dirp,
long offset)
{
struct timespec current_mtime;
struct dirsort_privates *data = NULL;
SMB_VFS_HANDLE_GET_DATA(handle, data, struct dirsort_privates, return);
/* Find the entry holding dirp. */
while(data && (data->source_directory != dirp)) {
data = data->next;
}
if (data == NULL) {
return;
}
if (offset >= data->number_of_entries) {
return;
}
data->pos = offset;
if (get_sorted_dir_mtime(handle, data, ¤t_mtime) == false) {
return;
}
if (timespec_compare(¤t_mtime, &data->mtime)) {
/* Directory changed. We must re-read the
cache and search for the name that was
previously stored at the offset being
requested, otherwise after the re-sort
we will point to the wrong entry. The
OS/2 incremental delete code relies on
this. */
unsigned int i;
char *wanted_name = talloc_strdup(handle->conn,
data->directory_list[offset].d_name);
if (wanted_name == NULL) {
return;
}
SMB_VFS_NEXT_REWINDDIR(handle, data->source_directory);
open_and_sort_dir(handle, data);
/* Now search for where we were. */
data->pos = 0;
for (i = 0; i < data->number_of_entries; i++) {
if(strcmp(wanted_name, data->directory_list[i].d_name) == 0) {
data->pos = i;
break;
}
}
TALLOC_FREE(wanted_name);
}
}
static bool open_and_sort_dir(vfs_handle_struct *handle,
struct dirsort_privates *data)
{
unsigned int i = 0;
unsigned int total_count = 0;
data->number_of_entries = 0;
if (get_sorted_dir_mtime(handle, data, &data->mtime) == false) {
return false;
}
while (SMB_VFS_NEXT_READDIR(handle, data->source_directory, NULL)
!= NULL) {
total_count++;
}
if (total_count == 0) {
return false;
}
/* Open the underlying directory and count the number of entries
Skip back to the beginning as we'll read it again */
SMB_VFS_NEXT_REWINDDIR(handle, data->source_directory);
/* Set up an array and read the directory entries into it */
TALLOC_FREE(data->directory_list); /* destroy previous cache if needed */
data->directory_list = talloc_zero_array(data,
struct dirent,
total_count);
if (!data->directory_list) {
return false;
}
for (i = 0; i < total_count; i++) {
struct dirent *dp = SMB_VFS_NEXT_READDIR(handle,
data->source_directory,
NULL);
if (dp == NULL) {
break;
}
data->directory_list[i] = *dp;
}
data->number_of_entries = i;
/* Sort the directory entries by name */
TYPESAFE_QSORT(data->directory_list, data->number_of_entries, compare_dirent);
return true;
}
static bool open_and_sort_dir (vfs_handle_struct *handle)
{
SMB_STRUCT_DIRENT *dp;
struct stat dir_stat;
long current_pos;
struct dirsort_privates *data = NULL;
SMB_VFS_HANDLE_GET_DATA(handle, data, struct dirsort_privates,
return false);
data->number_of_entries = 0;
if (fstat(data->fd, &dir_stat) == 0) {
data->mtime = dir_stat.st_mtime;
}
while (SMB_VFS_NEXT_READDIR(handle, data->source_directory, NULL)
!= NULL) {
data->number_of_entries++;
}
/* Open the underlying directory and count the number of entries
Skip back to the beginning as we'll read it again */
SMB_VFS_NEXT_REWINDDIR(handle, data->source_directory);
/* Set up an array and read the directory entries into it */
SAFE_FREE(data->directory_list); /* destroy previous cache if needed */
data->directory_list = (SMB_STRUCT_DIRENT *)SMB_MALLOC(
data->number_of_entries * sizeof(SMB_STRUCT_DIRENT));
if (!data->directory_list) {
return false;
}
current_pos = data->pos;
data->pos = 0;
while ((dp = SMB_VFS_NEXT_READDIR(handle, data->source_directory,
NULL)) != NULL) {
data->directory_list[data->pos++] = *dp;
}
/* Sort the directory entries by name */
data->pos = current_pos;
TYPESAFE_QSORT(data->directory_list, data->number_of_entries, compare_dirent);
return true;
}
static void skel_rewind_dir(vfs_handle_struct *handle, DIR *dirp)
{
SMB_VFS_NEXT_REWINDDIR(handle, dirp);
}
static void skel_rewinddir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp)
{
return SMB_VFS_NEXT_REWINDDIR(handle, dirp);
}
