static gboolean
do_read_run (GLnxDirFdIterator *dfd_iter,
guint *out_n_read,
GError **error)
{
guint nattrs = 0;
while (TRUE)
{
struct dirent *dent;
if (!glnx_dirfd_iterator_next_dent (dfd_iter, &dent, NULL, error))
return FALSE;
if (!dent)
break;
glnx_autofd int fd = -1;
if (!glnx_openat_rdonly (dfd_iter->fd, dent->d_name, FALSE, &fd, error))
return FALSE;
g_autoptr(GVariant) current_xattrs = NULL;
if (!glnx_fd_get_all_xattrs (fd, ¤t_xattrs, NULL, error))
return FALSE;
/* We don't actually care about the values, just use the variable
* to avoid compiler warnings.
*/
nattrs += g_variant_n_children (current_xattrs);
}
*out_n_read = nattrs;
return TRUE;
}
/**
* gs_fd_get_all_xattrs:
* @fd: a file descriptor
* @out_xattrs: (out): A new #GVariant containing the extended attributes
* @cancellable: Cancellable
* @error: Error
*
* Read all extended attributes from @fd in a canonical sorted order, and
* set @out_xattrs with the result.
*
* If the filesystem does not support extended attributes, @out_xattrs
* will have 0 elements, and this function will return successfully.
*/
gboolean
gs_fd_get_all_xattrs (int fd,
GVariant **out_xattrs,
GCancellable *cancellable,
GError **error)
{
return glnx_fd_get_all_xattrs (fd, out_xattrs, cancellable, error);
}
static gboolean
do_write_run (GLnxDirFdIterator *dfd_iter, GError **error)
{
WriteType wtype = g_random_int () % 2;
if (wtype == WRITE_RUN_CREATE)
{
guint32 randname_v = g_random_int ();
g_autofree char *randname = g_strdup_printf ("file%u", randname_v);
glnx_autofd int fd = -1;
again:
fd = openat (dfd_iter->fd, randname, O_CREAT | O_EXCL, 0644);
if (fd < 0)
{
if (errno == EEXIST)
{
g_printerr ("Congratulations! I suggest purchasing a lottery ticket today!\n");
goto again;
}
else
{
glnx_set_error_from_errno (error);
return FALSE;
}
}
if (!add_random_xattrs (fd, error))
return FALSE;
}
else if (wtype == WRITE_RUN_MUTATE)
{
while (TRUE)
{
struct dirent *dent;
if (!glnx_dirfd_iterator_next_dent (dfd_iter, &dent, NULL, error))
return FALSE;
if (!dent)
break;
glnx_autofd int fd = -1;
if (!glnx_openat_rdonly (dfd_iter->fd, dent->d_name, FALSE, &fd, error))
return FALSE;
g_autoptr(GVariant) current_xattrs = NULL;
if (!glnx_fd_get_all_xattrs (fd, ¤t_xattrs, NULL, error))
return FALSE;
for (int i = 0; i < g_variant_n_children (current_xattrs); i++)
{
const char *name, *value;
g_variant_get_child (current_xattrs, i, "(^&ay^&ay)", &name, &value);
/* We don't want to potentially test/change xattrs like security.selinux
* that were injected by the system.
*/
if (!g_str_has_prefix (name, "user.test"))
continue;
if (!set_random_xattr_value (fd, name, error))
return FALSE;
}
}
}
else
g_assert_not_reached ();
return TRUE;
}
