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cmd: smbios: replace missing string by 'Not Specified'

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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>
This commit is contained in:
Heinrich Schuchardt
2024-01-29 18:01:27 +01:00
parent e799f8a48d
commit c11f176ab1
1 changed files with 5 additions and 1 deletions
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6
cmd/smbios.c
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@@ -25,6 +25,10 @@ static const char *smbios_get_string(void *table, int index)
{ {
const char *str = (char *)table + const char *str = (char *)table +
((struct smbios_header *)table)->length; ((struct smbios_header *)table)->length;
static const char fallback[] = "Not Specified";
if (!index)
return fallback;
if (!*str) if (!*str)
++str; ++str;
@@ -41,7 +45,7 @@ static struct smbios_header *next_table(struct smbios_header *table)
if (table->type == SMBIOS_END_OF_TABLE) if (table->type == SMBIOS_END_OF_TABLE)
return NULL; return NULL;
str = smbios_get_string(table, 0); str = smbios_get_string(table, -1);
return (struct smbios_header *)(++str); return (struct smbios_header *)(++str);
} }