On 1/5/22 14:11, Dylan Simon wrote:
Then it will look like this (I'm inferring, haven't actually tried it):
I'm still not quite following, but does the attached patch address the
problem?diff --git a/src/df.c b/src/df.c
index b803fc73b..8a0293ca9 100644
--- a/src/df.c
+++ b/src/df.c
@@ -127,6 +127,7 @@ static bool print_grand_total;
/* Grand total data. */
static struct fs_usage grand_fsu;
+static bool grand_fsu_fsu_files_top_bit_set;
/* Display modes. */
enum
@@ -993,8 +994,11 @@ get_field_values (struct field_values_t *bv,
static void
add_to_grand_total (struct field_values_t *bv, struct field_values_t *iv)
{
- if (known_value (iv->total))
- grand_fsu.fsu_files += iv->total;
+ if (known_value (iv->total) && known_value (iv->available_to_root))
+ add_uint_with_neg_flag (&grand_fsu.fsu_files,
+ &grand_fsu_fsu_files_top_bit_set,
+ iv->total - iv->available_to_root,
+ iv->total < iv->available_to_root);
if (known_value (iv->available))
grand_fsu.fsu_ffree += iv->available;
@@ -1860,6 +1864,9 @@ main (int argc, char **argv)
NULL, NULL, NULL, false, false, &grand_fsu, false);
print_table ();
+
+ if (print_grand_total & grand_fsu_fsu_files_top_bit_set)
+ die (EXIT_FAILURE, 0, "iused < 0");
}
else
{
