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s390/sysinfo: show partition extended name and UUID if available

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Extract extended name and UUID from SYSIB 2.2.2 data.
As the code to convert the raw extended name into printable format
can be reused by stsi_2_2_2 we're moving the conversion code into a
separate function convert_ext_name.

Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Viktor Mihajlovski 2016-11-10 14:32:59 +01:00 committed by Martin Schwidefsky
parent e6d4a636ac
commit e32eae10e5
2 changed files with 27 additions and 13 deletions
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7
arch/s390/include/asm/sysinfo.h
View File

@ -107,6 +107,11 @@ struct sysinfo_2_2_2 {
char reserved_3[5];
unsigned short cpus_dedicated;
unsigned short cpus_shared;
char reserved_4[3];
unsigned char vsne;
uuid_be uuid;
char reserved_5[160];
char ext_name[256];
};
#define LPAR_CHAR_DEDICATED (1 << 7)
@ -127,7 +132,7 @@ struct sysinfo_3_2_2 {
unsigned int caf;
char cpi[16];
char reserved_1[3];
char ext_name_encoding;
unsigned char evmne;
unsigned int reserved_2;
uuid_be uuid;
} vm[8];

33
arch/s390/kernel/sysinfo.c
View File

@ -56,6 +56,20 @@ int stsi(void *sysinfo, int fc, int sel1, int sel2)
}
EXPORT_SYMBOL(stsi);
static bool convert_ext_name(unsigned char encoding, char *name, size_t len)
{
switch (encoding) {
case 1: /* EBCDIC */
EBCASC(name, len);
break;
case 2: /* UTF-8 */
break;
default:
return false;
}
return true;
}
static void stsi_1_1_1(struct seq_file *m, struct sysinfo_1_1_1 *info)
{
int i;
@ -207,24 +221,19 @@ static void stsi_2_2_2(struct seq_file *m, struct sysinfo_2_2_2 *info)
seq_printf(m, "LPAR CPUs S-MTID: %d\n", info->mt_stid);
seq_printf(m, "LPAR CPUs PS-MTID: %d\n", info->mt_psmtid);
}
if (convert_ext_name(info->vsne, info->ext_name, sizeof(info->ext_name))) {
seq_printf(m, "LPAR Extended Name: %-.256s\n", info->ext_name);
seq_printf(m, "LPAR UUID: %pUb\n", &info->uuid);
}
}
static void print_ext_name(struct seq_file *m, int lvl,
struct sysinfo_3_2_2 *info)
{
if (info->vm[lvl].ext_name_encoding == 0)
size_t len = sizeof(info->ext_names[lvl]);
if (!convert_ext_name(info->vm[lvl].evmne, info->ext_names[lvl], len))
return;
if (info->ext_names[lvl][0] == 0)
return;
switch (info->vm[lvl].ext_name_encoding) {
case 1: /* EBCDIC */
EBCASC(info->ext_names[lvl], sizeof(info->ext_names[lvl]));
break;
case 2: /* UTF-8 */
break;
default:
return;
}
seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl,
info->ext_names[lvl]);
}