int ext2_mkdir_r (struct _reent *r, const char *path, int mode)
{
ext2_log_trace("path %s, mode %i\n", path, mode);
ext2_vd *vd = NULL;
ext2_inode_t *ni = NULL;
// Get the volume descriptor for this path
vd = ext2GetVolume(path);
if (!vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ext2Lock(vd);
// Create the directory
ni = ext2Create(vd, path, S_IFDIR, NULL);
if (!ni) {
ext2Unlock(vd);
r->_errno = errno;
return -1;
}
// Close the directory
ext2CloseEntry(vd, ni);
// Unlock
ext2Unlock(vd);
return 0;
}
int ext2_link_r (struct _reent *r, const char *existing, const char *newLink)
{
ext2_log_trace("existing %s, newLink %s\n", existing, newLink);
ext2_vd *vd = NULL;
ext2_inode_t *ni = NULL;
// Get the volume descriptor for this path
vd = ext2GetVolume(existing);
if (!vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ext2Lock(vd);
// Create a symbolic link between the two paths
ni = ext2Create(vd, existing, S_IFLNK, newLink);
if (!ni) {
ext2Unlock(vd);
r->_errno = errno;
return -1;
}
// Close the symbolic link
ext2CloseEntry(vd, ni);
// Unlock
ext2Unlock(vd);
return 0;
}
int ext2_open_r (struct _reent *r, void *fileStruct, const char *path, int flags, int mode)
{
//ext2_log_trace("fileStruct %p, path %s, flags %i, mode %i\n", fileStruct, path, flags, mode);
ext2_file_state* file = STATE(fileStruct);
// Get the volume descriptor for this path
file->vd = ext2GetVolume(path);
if (!file->vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ext2Lock(file->vd);
// Determine which mode the file is opened for
file->flags = flags;
if ((flags & 0x03) == O_RDONLY) {
file->read = true;
file->write = false;
file->append = false;
} else if ((flags & 0x03) == O_WRONLY) {
file->read = false;
file->write = true;
file->append = (flags & O_APPEND);
} else if ((flags & 0x03) == O_RDWR) {
file->read = true;
file->write = true;
file->append = (flags & O_APPEND);
} else {
r->_errno = EACCES;
ext2Unlock(file->vd);
return -1;
}
// Try and find the file and (if found) ensure that it is not a directory
file->ni = ext2OpenEntry(file->vd, path);
if (file->ni && LINUX_S_ISDIR(file->ni->ni.i_mode))
{
ext2CloseEntry(file->vd, file->ni);
ext2Unlock(file->vd);
r->_errno = EISDIR;
return -1;
}
// Are we creating this file?
if ((flags & O_CREAT) && !file->ni)
// Create the file
file->ni = ext2Create(file->vd, path, S_IFREG, NULL);
// exit(0);
// Sanity check, the file should be open by now
if (!file->ni) {
ext2Unlock(file->vd);
r->_errno = ENOENT;
return -1;
}
// Make sure we aren't trying to write to a read-only file
if (!(file->vd->fs->flags & EXT2_FLAG_RW) && file->write)
{
ext2CloseEntry(file->vd, file->ni);
ext2Unlock(file->vd);
r->_errno = EROFS;
return -1;
}
errcode_t err = ext2fs_file_open2(file->vd->fs, file->ni->ino, &file->ni->ni,
file->write ? EXT2_FLAG_RW : 0, &file->fd);
if(err != 0)
{
ext2CloseEntry(file->vd, file->ni);
ext2Unlock(file->vd);
r->_errno = ENOENT;
return -1;
}
// Truncate the file if requested
if ((flags & O_TRUNC) && file->write) {
if (ext2fs_file_set_size2(file->fd, 0) != 0) {
ext2CloseEntry(file->vd, file->ni);
ext2Unlock(file->vd);
r->_errno = errno;
return -1;
}
file->ni->ni.i_size = file->ni->ni.i_size_high = 0;
}
// Set the files current position
ext2fs_file_llseek(file->fd, file->append ? EXT2_I_SIZE(&file->ni->ni) : 0, SEEK_SET, 0);
//ext2_log_trace("file->len %lld\n", EXT2_I_SIZE(&file->ni->ni));
// Update file times
ext2UpdateTimes(file->vd, file->ni, EXT2_UPDATE_ATIME);
// Insert the file into the double-linked FILO list of open files
if (file->vd->firstOpenFile) {
file->nextOpenFile = file->vd->firstOpenFile;
file->vd->firstOpenFile->prevOpenFile = file;
} else {
file->nextOpenFile = NULL;
}
file->prevOpenFile = NULL;
file->vd->firstOpenFile = file;
file->vd->openFileCount++;
// Sync access time
ext2Sync(file->vd, file->ni);
file->is_ntfs = 0;
// Unlock
ext2Unlock(file->vd);
return (int)(s64)fileStruct;
}
