}
struct dirsort_privates {
+ struct dirsort_privates *prev, *next;
long pos;
struct dirent *directory_list;
- long number_of_entries;
- time_t mtime;
+ unsigned int number_of_entries;
+ struct timespec mtime;
DIR *source_directory;
- int fd;
+ files_struct *fsp; /* If open via FDOPENDIR. */
+ struct smb_filename *smb_fname; /* If open via OPENDIR */
};
-static void free_dirsort_privates(void **datap) {
- TALLOC_FREE(*datap);
+static bool get_sorted_dir_mtime(vfs_handle_struct *handle,
+ struct dirsort_privates *data,
+ struct timespec *ret_mtime)
+{
+ int ret;
+ struct timespec mtime;
+
+ if (data->fsp) {
+ ret = fsp_stat(data->fsp);
+ mtime = data->fsp->fsp_name->st.st_ex_mtime;
+ } else {
+ ret = SMB_VFS_STAT(handle->conn, data->smb_fname);
+ mtime = data->smb_fname->st.st_ex_mtime;
+ }
+
+ if (ret == -1) {
+ return false;
+ }
+
+ *ret_mtime = mtime;
+
+ return true;
}
-static bool open_and_sort_dir (vfs_handle_struct *handle)
+static bool open_and_sort_dir(vfs_handle_struct *handle,
+ struct dirsort_privates *data)
{
- struct dirent *dp;
- struct stat dir_stat;
- unsigned int i;
- struct dirsort_privates *data = NULL;
-
- SMB_VFS_HANDLE_GET_DATA(handle, data, struct dirsort_privates,
- return false);
+ unsigned int i = 0;
+ unsigned int total_count = 0;
data->number_of_entries = 0;
- if (fstat(data->fd, &dir_stat) == 0) {
- data->mtime = dir_stat.st_mtime;
+ if (get_sorted_dir_mtime(handle, data, &data->mtime) == false) {
+ return false;
}
while (SMB_VFS_NEXT_READDIR(handle, data->source_directory, NULL)
!= NULL) {
- data->number_of_entries++;
+ total_count++;
}
- if (data->number_of_entries == 0) {
+ if (total_count == 0) {
return false;
}
TALLOC_FREE(data->directory_list); /* destroy previous cache if needed */
data->directory_list = talloc_zero_array(data,
struct dirent,
- data->number_of_entries);
+ total_count);
if (!data->directory_list) {
return false;
}
- i = 0;
- while ((dp = SMB_VFS_NEXT_READDIR(handle, data->source_directory,
- NULL)) != NULL) {
- data->directory_list[i++] = *dp;
+ 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 DIR *dirsort_opendir(vfs_handle_struct *handle,
- const char *fname, const char *mask,
- uint32 attr)
+ const struct smb_filename *smb_fname,
+ const char *mask,
+ uint32_t attr)
{
+ struct dirsort_privates *list_head = NULL;
struct dirsort_privates *data = NULL;
+ if (SMB_VFS_HANDLE_TEST_DATA(handle)) {
+ /* Find the list head of all open directories. */
+ SMB_VFS_HANDLE_GET_DATA(handle, list_head, struct dirsort_privates,
+ return NULL);
+ }
+
/* set up our private data about this directory */
data = talloc_zero(handle->conn, struct dirsort_privates);
if (!data) {
return NULL;
}
- data->directory_list = NULL;
- data->pos = 0;
+ data->smb_fname = cp_smb_filename(data, smb_fname);
+ if (data->smb_fname == NULL) {
+ TALLOC_FREE(data);
+ return NULL;
+ }
/* Open the underlying directory and count the number of entries */
- data->source_directory = SMB_VFS_NEXT_OPENDIR(handle, fname, mask,
+ data->source_directory = SMB_VFS_NEXT_OPENDIR(handle, smb_fname, mask,
attr);
- data->fd = dirfd(data->source_directory);
-
- SMB_VFS_HANDLE_SET_DATA(handle, data, free_dirsort_privates,
- struct dirsort_privates, return NULL);
+ if (data->source_directory == NULL) {
+ TALLOC_FREE(data);
+ return NULL;
+ }
- if (!open_and_sort_dir(handle)) {
+ if (!open_and_sort_dir(handle, data)) {
SMB_VFS_NEXT_CLOSEDIR(handle,data->source_directory);
+ TALLOC_FREE(data);
return NULL;
}
+ /* Add to the private list of all open directories. */
+ DLIST_ADD(list_head, data);
+ SMB_VFS_HANDLE_SET_DATA(handle, list_head, NULL,
+ struct dirsort_privates, return NULL);
+
return data->source_directory;
}
static DIR *dirsort_fdopendir(vfs_handle_struct *handle,
files_struct *fsp,
const char *mask,
- uint32 attr)
+ uint32_t attr)
{
+ struct dirsort_privates *list_head = NULL;
struct dirsort_privates *data = NULL;
+ if (SMB_VFS_HANDLE_TEST_DATA(handle)) {
+ /* Find the list head of all open directories. */
+ SMB_VFS_HANDLE_GET_DATA(handle, list_head, struct dirsort_privates,
+ return NULL);
+ }
+
/* set up our private data about this directory */
data = talloc_zero(handle->conn, struct dirsort_privates);
if (!data) {
return NULL;
}
- data->directory_list = NULL;
- data->pos = 0;
+ data->fsp = fsp;
/* Open the underlying directory and count the number of entries */
data->source_directory = SMB_VFS_NEXT_FDOPENDIR(handle, fsp, mask,
return NULL;
}
- data->fd = dirfd(data->source_directory);
-
- SMB_VFS_HANDLE_SET_DATA(handle, data, free_dirsort_privates,
- struct dirsort_privates, return NULL);
-
- if (!open_and_sort_dir(handle)) {
+ if (!open_and_sort_dir(handle, data)) {
SMB_VFS_NEXT_CLOSEDIR(handle,data->source_directory);
+ TALLOC_FREE(data);
/* fd is now closed. */
fsp->fh->fd = -1;
return NULL;
}
+ /* Add to the private list of all open directories. */
+ DLIST_ADD(list_head, data);
+ SMB_VFS_HANDLE_SET_DATA(handle, list_head, NULL,
+ struct dirsort_privates, return NULL);
+
return data->source_directory;
}
SMB_STRUCT_STAT *sbuf)
{
struct dirsort_privates *data = NULL;
- time_t current_mtime;
- struct stat dir_stat;
+ struct timespec current_mtime;
SMB_VFS_HANDLE_GET_DATA(handle, data, struct dirsort_privates,
return NULL);
- if (fstat(data->fd, &dir_stat) == -1) {
+ while(data && (data->source_directory != dirp)) {
+ data = data->next;
+ }
+ if (data == NULL) {
return NULL;
}
- current_mtime = dir_stat.st_mtime;
+ 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 (current_mtime > data->mtime) {
- open_and_sort_dir(handle);
+ 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) {
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 long dirsort_telldir(vfs_handle_struct *handle, DIR *dirp)
SMB_VFS_HANDLE_GET_DATA(handle, data, struct dirsort_privates,
return -1);
+ /* Find the entry holding dirp. */
+ while(data && (data->source_directory != dirp)) {
+ data = data->next;
+ }
+ if (data == NULL) {
+ return -1;
+ }
return data->pos;
}
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;
+ }
data->pos = 0;
}
+static int dirsort_closedir(vfs_handle_struct *handle, DIR *dirp)
+{
+ struct dirsort_privates *list_head = NULL;
+ struct dirsort_privates *data = NULL;
+ int ret;
+
+ SMB_VFS_HANDLE_GET_DATA(handle, list_head, struct dirsort_privates, return -1);
+ /* Find the entry holding dirp. */
+ for(data = list_head; data && (data->source_directory != dirp); data = data->next) {
+ ;
+ }
+ if (data == NULL) {
+ return -1;
+ }
+ /* Remove from the list and re-store the list head. */
+ DLIST_REMOVE(list_head, data);
+ SMB_VFS_HANDLE_SET_DATA(handle, list_head, NULL,
+ struct dirsort_privates, return -1);
+
+ ret = SMB_VFS_NEXT_CLOSEDIR(handle, dirp);
+ TALLOC_FREE(data);
+ return ret;
+}
+
static struct vfs_fn_pointers vfs_dirsort_fns = {
.opendir_fn = dirsort_opendir,
.fdopendir_fn = dirsort_fdopendir,
.seekdir_fn = dirsort_seekdir,
.telldir_fn = dirsort_telldir,
.rewind_dir_fn = dirsort_rewinddir,
+ .closedir_fn = dirsort_closedir,
};
+static_decl_vfs;
NTSTATUS vfs_dirsort_init(void)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "dirsort",
git.samba.org / kai / samba-autobuild / .git / blobdiff