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Introduction of the "sys -i" option, which displays the kernel's DMI

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identification string data if available.
(atomlin@redhat.com, anderson@redhat.com)
This commit is contained in:
Dave Anderson 2015-12-09 09:25:14 -05:00
parent 889f4f665e
commit 9ba68adb0c
2 changed files with 92 additions and 2 deletions
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23
help.c
View File

@ -3234,7 +3234,7 @@ NULL
char *help_sys[] = {
"sys",
"system data",
"[-c [name|number]] [-t] config",
"[-c [name|number]] [-t] [-i] config",
" This command displays system-specific data. If no arguments are entered,\n"
" the same system data shown during %s invocation is shown.\n",
" -c [name|number] If no name or number argument is entered, dump all",
@ -3257,6 +3257,7 @@ char *help_sys[] = {
" /dev/mem. Results in the %s context causing an",
" \"Attempted to kill the idle task!\" panic. (The dump",
" will indicate that the %s context has a PID of 0).",
" -i Dump the DMI string data if available in the kernel.",
"\nEXAMPLES",
" Display essential system information:\n",
@ -3321,6 +3322,26 @@ char *help_sys[] = {
" ",
" If the current output radix has been set to 16, the system call numbers",
" will be displayed in hexadecimal.",
"\n Dump the DMI string data:\n",
" %s> sys -i",
" DMI_BIOS_VENDOR: LENOVO",
" DMI_BIOS_VERSION: G4ET37WW (1.12 )",
" DMI_BIOS_DATE: 05/29/2012",
" DMI_SYS_VENDOR: LENOVO",
" DMI_PRODUCT_NAME: 2429BQ1",
" DMI_PRODUCT_VERSION: ThinkPad T530",
" DMI_PRODUCT_SERIAL: R9R91HZ",
" DMI_PRODUCT_UUID: 568DFA01-5180-11CB-B851-BD06085ADDB0",
" DMI_BOARD_VENDOR: LENOVO",
" DMI_BOARD_NAME: 2429BQ1",
" DMI_BOARD_VERSION: Not Available",
" DMI_BOARD_SERIAL: 1ZLV127F17M",
" DMI_BOARD_ASSET_TAG: Not Available",
" DMI_CHASSIS_VENDOR: LENOVO",
" DMI_CHASSIS_TYPE: 10",
" DMI_CHASSIS_VERSION: Not Available",
" DMI_CHASSIS_SERIAL: R9R91HZ",
" DMI_CHASSIS_ASSET_TAG: RH0004111",
NULL
};

71
kernel.c
View File

@ -77,6 +77,7 @@ static void dump_log_legacy(void);
static void dump_variable_length_record(void);
static int is_livepatch(void);
static void show_kernel_taints(char *, int);
static void dump_dmi_info(void);
static void list_source_code(struct gnu_request *, int);
static void source_tree_init(void);
@ -4924,7 +4925,7 @@ cmd_sys(void)
sflag = FALSE;
while ((c = getopt(argcnt, args, "ctp:")) != EOF) {
while ((c = getopt(argcnt, args, "ctip:")) != EOF) {
switch(c)
{
case 'p':
@ -4942,6 +4943,10 @@ cmd_sys(void)
show_kernel_taints(buf, VERBOSE);
return;
case 'i':
dump_dmi_info();
return;
default:
argerrs++;
break;
@ -10112,3 +10117,67 @@ show_kernel_taints(char *buf, int verbose)
fprintf(fp, "TAINTED_MASK: %lx %s\n", tainted_mask, buf);
}
static void
dump_dmi_info(void)
{
int i, array_len, len, maxlen;
ulong dmi_ident_p, vaddr;
char buf1[BUFSIZE];
char buf2[BUFSIZE];
char *arglist[MAXARGS];
if (!kernel_symbol_exists("dmi_ident"))
error(FATAL, "dmi_ident does not exist in this kernel\n");
dmi_ident_p = symbol_value("dmi_ident");
array_len = get_array_length("dmi_ident", NULL, 0);
maxlen = 0;
open_tmpfile();
if (dump_enumerator_list("dmi_field")) {
rewind(pc->tmpfile);
while (fgets(buf1, BUFSIZE, pc->tmpfile)) {
if (!strstr(buf1, " = "))
continue;
if ((parse_line(buf1, arglist) != 3) ||
(atoi(arglist[2]) >= array_len))
break;
len = strlen(arglist[0]);
if (len > maxlen)
maxlen = len;
}
rewind(pc->tmpfile);
while (fgets(buf1, BUFSIZE, pc->tmpfile)) {
if (!strstr(buf1, " = "))
continue;
if ((parse_line(buf1, arglist) != 3) ||
((i = atoi(arglist[2])) >= array_len))
break;
readmem(dmi_ident_p + (sizeof(void *) * i),
KVADDR, &vaddr, sizeof(void *),
"dmi_ident", FAULT_ON_ERROR);
if (!vaddr)
continue;
read_string(vaddr, buf2, BUFSIZE-1);
fprintf(pc->saved_fp, " %s%s: %s\n",
space(maxlen - strlen(arglist[0])), arglist[0], buf2);
}
} else {
for (i = 0; i < array_len; i++) {
readmem(dmi_ident_p + (sizeof(void *) * i),
KVADDR, &vaddr, sizeof(void *),
"dmi_ident", FAULT_ON_ERROR);
if (!vaddr)
continue;
read_string(vaddr, buf1, BUFSIZE-1);
fprintf(pc->saved_fp, " dmi_ident[%d]: %s\n", i, buf1);
}
}
close_tmpfile();
}