A missing string value is indicated by a string index of 0. In this case print 'Not Specified' like the Linux dmidecode command does.
Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- cmd/smbios.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/cmd/smbios.c b/cmd/smbios.c index 62935ecd1a2..95bdff60268 100644 --- a/cmd/smbios.c +++ b/cmd/smbios.c @@ -25,6 +25,10 @@ static const char *smbios_get_string(void *table, int index) { const char *str = (char *)table + ((struct smbios_header *)table)->length; + static const char fallback[] = "Not Specified"; + + if (!index) + return fallback;
if (!*str) ++str; @@ -41,7 +45,7 @@ static struct smbios_header *next_table(struct smbios_header *table) if (table->type == SMBIOS_END_OF_TABLE) return NULL;
- str = smbios_get_string(table, 0); + str = smbios_get_string(table, -1); return (struct smbios_header *)(++str); }