static gboolean
export_dir (int source_parent_fd,
const char *source_name,
const char *source_relpath,
int destination_parent_fd,
const char *destination_name,
const char *required_prefix,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
int res;
g_auto(GLnxDirFdIterator) source_iter = {0};
glnx_fd_close int destination_dfd = -1;
struct dirent *dent;
if (!glnx_dirfd_iterator_init_at (source_parent_fd, source_name, FALSE, &source_iter, error))
goto out;
do
res = mkdirat (destination_parent_fd, destination_name, 0777);
while (G_UNLIKELY (res == -1 && errno == EINTR));
if (res == -1)
{
if (errno != EEXIST)
{
glnx_set_error_from_errno (error);
goto out;
}
}
if (!gs_file_open_dir_fd_at (destination_parent_fd, destination_name,
&destination_dfd,
cancellable, error))
goto out;
while (TRUE)
{
struct stat stbuf;
g_autofree char *source_printable = NULL;
if (!glnx_dirfd_iterator_next_dent (&source_iter, &dent, cancellable, error))
goto out;
if (dent == NULL)
break;
if (fstatat (source_iter.fd, dent->d_name, &stbuf, AT_SYMLINK_NOFOLLOW) == -1)
{
if (errno == ENOENT)
continue;
else
{
glnx_set_error_from_errno (error);
goto out;
}
}
if (S_ISDIR (stbuf.st_mode))
{
g_autofree gchar *child_relpath = g_build_filename(source_relpath, dent->d_name, NULL);
if (!export_dir (source_iter.fd, dent->d_name, child_relpath, destination_dfd, dent->d_name,
required_prefix, cancellable, error))
goto out;
}
else if (S_ISREG (stbuf.st_mode))
{
source_printable = g_build_filename (source_relpath, dent->d_name, NULL);
if (!xdg_app_has_name_prefix (dent->d_name, required_prefix))
{
g_print ("Not exporting %s, wrong prefix\n", source_printable);
continue;
}
g_print ("Exporting %s\n", source_printable);
if (!glnx_file_copy_at (source_iter.fd, dent->d_name, &stbuf,
destination_dfd, dent->d_name,
GLNX_FILE_COPY_NOXATTRS,
cancellable,
error))
goto out;
}
else
{
source_printable = g_build_filename (source_relpath, dent->d_name, NULL);
g_print ("Not exporting non-regular file %s\n", source_printable);
}
}
ret = TRUE;
out:
return ret;
}
static gboolean
export_dir (int source_parent_fd,
const char *source_name,
const char *source_relpath,
int destination_parent_fd,
const char *destination_name,
const char *required_prefix,
GCancellable *cancellable,
GError **error)
{
int res;
g_auto(GLnxDirFdIterator) source_iter = {0};
glnx_fd_close int destination_dfd = -1;
struct dirent *dent;
if (!glnx_dirfd_iterator_init_at (source_parent_fd, source_name, FALSE, &source_iter, error))
return FALSE;
do
res = mkdirat (destination_parent_fd, destination_name, 0755);
while (G_UNLIKELY (res == -1 && errno == EINTR));
if (res == -1)
{
if (errno != EEXIST)
{
glnx_set_error_from_errno (error);
return FALSE;
}
}
if (!gs_file_open_dir_fd_at (destination_parent_fd, destination_name,
&destination_dfd,
cancellable, error))
return FALSE;
while (TRUE)
{
struct stat stbuf;
g_autofree char *source_printable = NULL;
if (!glnx_dirfd_iterator_next_dent (&source_iter, &dent, cancellable, error))
return FALSE;
if (dent == NULL)
break;
if (fstatat (source_iter.fd, dent->d_name, &stbuf, AT_SYMLINK_NOFOLLOW) == -1)
{
if (errno == ENOENT)
continue;
else
{
glnx_set_error_from_errno (error);
return FALSE;
}
}
/* Don't export any hidden files or backups */
if (g_str_has_prefix (dent->d_name, ".") ||
g_str_has_suffix (dent->d_name, "~"))
continue;
if (S_ISDIR (stbuf.st_mode))
{
g_autofree gchar *child_relpath = g_build_filename(source_relpath, dent->d_name, NULL);
if (!export_dir (source_iter.fd, dent->d_name, child_relpath, destination_dfd, dent->d_name,
required_prefix, cancellable, error))
return FALSE;
}
else if (S_ISREG (stbuf.st_mode))
{
source_printable = g_build_filename (source_relpath, dent->d_name, NULL);
if (!xdg_app_has_name_prefix (dent->d_name, required_prefix))
{
g_print ("Not exporting %s, wrong prefix\n", source_printable);
continue;
}
g_print ("Exporting %s\n", source_printable);
if (!glnx_file_copy_at (source_iter.fd, dent->d_name, &stbuf,
destination_dfd, dent->d_name,
GLNX_FILE_COPY_NOXATTRS,
cancellable,
error))
return FALSE;
}
else
{
source_printable = g_build_filename (source_relpath, dent->d_name, NULL);
g_print ("Not exporting non-regular file %s\n", source_printable);
}
}
/* Try to remove the directory, as we don't want to export empty directories.
* However, don't fail if the unlink fails due to the directory not being empty */
do
res = unlinkat (destination_parent_fd, destination_name, AT_REMOVEDIR);
while (G_UNLIKELY (res == -1 && errno == EINTR));
if (res == -1)
{
if (errno != ENOTEMPTY)
{
glnx_set_error_from_errno (error);
return FALSE;
}
}
return TRUE;
}