/**
* Set the next direntry to be read via onefs_readdir() to the beginning of the
* directory.
*
* @param[in] handle vfs handle given in most VFS calls
* @param[in] dirp system DIR handle to set offset on
*
* @return no return value
*/
void
onefs_rewinddir(vfs_handle_struct *handle, SMB_STRUCT_DIR *dirp)
{
struct rdp_dir_state *dsp = NULL;
bool same_as_last;
int ret = -1;
/* Fallback to default system routines if readdirplus is disabled */
if (!lp_parm_bool(SNUM(handle->conn), PARM_ONEFS_TYPE,
PARM_USE_READDIRPLUS, PARM_USE_READDIRPLUS_DEFAULT))
{
return sys_rewinddir(dirp);
}
/* Retrieve state based off DIR handle */
ret = rdp_retrieve_dir_state(dirp, &dsp, &same_as_last);
if (ret) {
DEBUG(1, ("Could not retrieve dir_state struct for "
"SMB_STRUCT_DIR pointer.\n"));
return;
}
/* Reset location and resume key to beginning */
ret = rdp_init(dsp);
if (ret) {
DEBUG(0, ("Error re-initializing rdp cursors: %s\n",
strerror(ret)));
return;
}
DEBUG(9, ("Rewind DIR: %p, to location: %ld\n", dsp->dirp,
dsp->location));
return;
}
/*
* rewind a directory
*/
int rewinddir(void * dir)
{
struct dir * pdir;
struct file_t * fp;
if(!dir)
return -1;
pdir = (struct dir *)dir;
if((fp = get_fp(pdir->fd)) == NULL)
return -1;
return sys_rewinddir(fp);
}
int main(void) {
put_str("I am kernel\n");
init_all();
/******** 测试代码 ********/
printf("/dir1 content before delete /dir1/subdir1:\n");
struct dir* dir = sys_opendir("/dir1/");
char* type = NULL;
struct dir_entry* dir_e = NULL;
while((dir_e = sys_readdir(dir))) {
if (dir_e->f_type == FT_REGULAR) {
type = "regular";
} else {
type = "directory";
}
printf(" %s %s\n", type, dir_e->filename);
}
printf("try to delete nonempty directory /dir1/subdir1\n");
if (sys_rmdir("/dir1/subdir1") == -1) {
printf("sys_rmdir: /dir1/subdir1 delete fail!\n");
}
printf("try to delete /dir1/subdir1/file2\n");
if (sys_rmdir("/dir1/subdir1/file2") == -1) {
printf("sys_rmdir: /dir1/subdir1/file2 delete fail!\n");
}
if (sys_unlink("/dir1/subdir1/file2") == 0 ) {
printf("sys_unlink: /dir1/subdir1/file2 delete done\n");
}
printf("try to delete directory /dir1/subdir1 again\n");
if (sys_rmdir("/dir1/subdir1") == 0) {
printf("/dir1/subdir1 delete done!\n");
}
printf("/dir1 content after delete /dir1/subdir1:\n");
sys_rewinddir(dir);
while((dir_e = sys_readdir(dir))) {
if (dir_e->f_type == FT_REGULAR) {
type = "regular";
} else {
type = "directory";
}
printf(" %s %s\n", type, dir_e->filename);
}
/******** 测试代码 ********/
while(1);
return 0;
}
void vfswrap_rewinddir(vfs_handle_struct *handle, connection_struct *conn, SMB_STRUCT_DIR *dirp)
{
START_PROFILE(syscall_rewinddir);
sys_rewinddir(dirp);
END_PROFILE(syscall_rewinddir);
}