/*
* Removes an entry from a directory.
*/
PUBLIC int dir_remove(struct inode *dinode, const char *filename)
{
struct buffer *buf; /* Block buffer. */
struct d_dirent *d; /* Directory entry. */
struct inode *file; /* File inode. */
d = dirent_search(dinode, filename, &buf, 0);
/* Not found. */
if (d == NULL)
return (-ENOENT);
/* Cannot remove '.' */
if (d->d_ino == dinode->num)
{
brelse(buf);
return (-EBUSY);
}
file = inode_get(dinode->dev, d->d_ino);
/* Failed to get file's inode. */
if (file == NULL)
{
brelse(buf);
return (-ENOENT);
}
/* Unlinking directory. */
if (S_ISDIR(file->mode))
{
/* Not allowed. */
if (!IS_SUPERUSER(curr_proc))
{
inode_put(file);
brelse(buf);
return (-EPERM);
}
/* Directory not empty. */
if (dinode->size)
{
inode_put(file);
brelse(buf);
return (-EBUSY);
}
}
/* Remove directory entry. */
d->d_ino = INODE_NULL;
buf->flags |= BUFFER_DIRTY;
inode_touch(dinode);
file->nlinks--;
inode_touch(file);
inode_put(file);
brelse(buf);
return (0);
}
/**
* @brief Searches for a file in a directory.
*
* @details Searches for a file named @p filename in the directory poitned to
* by @p dinode.
*
* @param ip Inode where the file that shall be searched.
* @param filename Name of the file that shall be searched.
*
* @returns If the requested file exists in the directory, than its inode number
* is returned. However, if the file does not exist #INODE_NULL is
* is returns instead.
*
* @note @p ip must be locked.
* @note @p filename must point to a valid location.
*/
PUBLIC ino_t dir_search(struct inode *ip, const char *filename)
{
struct buffer *buf; /* Block buffer. */
struct d_dirent *d; /* Directory entry. */
/* Search directory entry. */
d = dirent_search(ip, filename, &buf, 0);
if (d == NULL)
return (INODE_NULL);
brelse(buf);
return (d->d_ino);
}
int vpbp_dclose(SceUID fd)
{
int result;
struct IoDirentEntry *entry;
lock();
entry = dirent_search(fd);
if (entry != NULL && strlen(entry->path) > 4 && 0 == stricmp(entry->path+4, "/PSP/GAME")) {
save_cache();
}
result = sceIoDclose(fd);
unlock();
return result;
}
/*
* Adds an entry to a directory.
*/
PUBLIC int dir_add(struct inode *dinode, struct inode *inode, const char *name)
{
struct buffer *buf; /* Block buffer. */
struct d_dirent *d; /* Disk directory entry. */
d = dirent_search(dinode, name, &buf, 1);
/* Failed to create directory entry. */
if (d == NULL)
return (-1);
kstrncpy(d->d_name, name, NAME_MAX);
d->d_ino = inode->num;
buf->flags |= BUFFER_DIRTY;
brelse(buf);
return (0);
}
int vpbp_dread(SceUID fd, SceIoDirent * dir)
{
int result, cur_idx, ret;
struct IoDirentEntry *entry;
lock();
entry = dirent_search(fd);
if(entry == NULL) {
result = -44;
goto exit;
}
result = sceIoDread(entry->iso_dfd, dir);
if(sceKernelFindModuleByName("Game_Categories_Light") == NULL) {
while(result > 0 && !is_iso(dir)) {
result = sceIoDread(entry->iso_dfd, dir);
}
}
if (result > 0 && is_iso(dir)) {
VirtualPBP *vpbp;
vpbp = vpbp_realloc(g_vpbps, g_vpbps_cnt+1);
if(vpbp == NULL) {
result = -42;
goto exit;
}
g_vpbps = vpbp;
g_vpbps_cnt++;
cur_idx = g_vpbps_cnt-1;
vpbp = &g_vpbps[cur_idx];
STRCPY_S(vpbp->name, entry->path);
vpbp->name[4] = '\0';
STRCAT_S(vpbp->name, "/ISO");
STRCAT_S(vpbp->name, entry->path + sizeof("xxx:/PSP/GAME") - 1);
STRCAT_S(vpbp->name, "/");
STRCAT_S(vpbp->name, dir->d_name);
memcpy(&vpbp->ctime, &dir->d_stat.st_ctime, sizeof(vpbp->ctime));
memcpy(&vpbp->mtime, &dir->d_stat.st_mtime, sizeof(vpbp->mtime));
ret = get_cache(vpbp->name, &vpbp->mtime, vpbp);
if (ret < 0) {
ret = build_vpbp(vpbp);
if (ret < 0) {
result = -43;
goto exit;
}
}
result = add_fake_dirent(dir, cur_idx);
}
exit:
unlock();
return result;
}
