2:16 p.m.
Hi Aaron,
This kind of kernel/machine specific information has no place in the "help"
command, which is wholly concerned with crash utility internal debug related information.
It's probably not worthy of its own command, so maybe it could be a "sys" or
"mach" option?
Dave
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Aaron Tomlin <atomlin(a)redhat.com>
Date: 12/05/2015 12:41 PM (GMT-05:00)
To: crash-utility(a)redhat.com
Cc: milos(a)redhat.com, bsingh(a)redhat.com
Subject: [Crash-utility] [PATCH] help: Introduce -i option to dump
dmi_ident[] data
This patch introduces a '-i' option to the 'help' command to allow the
user
to conveniently display the DMI (Desktop Management Interface) table,
if available. For example:
crash> help -i
dmi_ident[1]: LENOVO
dmi_ident[2]: GIET75WW (2.25 )
dmi_ident[3]: 06/24/2014
dmi_ident[4]: LENOVO
dmi_ident[5]: 20AMS22U0C
dmi_ident[6]: ThinkPad X240
dmi_ident[7]: PC00CDZE
dmi_ident[8]: 01338439-0853-CB11-8EBB-CE1D1FC1CBC0
dmi_ident[9]: LENOVO
dmi_ident[10]: 20AMS22U0C
dmi_ident[11]: Not Defined
dmi_ident[12]: L1HF47E00T3
dmi_ident[13]: Not Available
dmi_ident[14]: LENOVO
dmi_ident[15]: 10
dmi_ident[16]: Not Available
dmi_ident[17]: PC00CDZE
dmi_ident[18]: No Asset Information
crash>
Suggested-by: Buland Singh <bsingh(a)redhat.com>
Signed-off-by: Aaron Tomlin <atomlin(a)redhat.com>
---
help.c | 35 ++++++++++++++++++++++++++++++++++-
1 file changed, 34 insertions(+), 1 deletion(-)
diff --git a/help.c b/help.c
index 883ddd0..fb1d518 100644
--- a/help.c
+++ b/help.c
@@ -32,6 +32,7 @@ static char *output_info[];
static char *input_info[];
static char *README[];
static void dump_registers(void);
+static void dump_dmi_info(void);
#define GPLv2 2
#define GPLv3 3
@@ -523,7 +524,7 @@ cmd_help(void)
oflag = 0;
while ((c = getopt(argcnt, args,
- "efNDdmM:ngcaBbHhkKsvVoptTzLxOr")) != EOF) {
+ "efNDdmM:ngcaBbHhkKsvVoptTzLxOri")) != EOF) {
switch(c)
{
case 'e':
@@ -638,6 +639,7 @@ cmd_help(void)
fprintf(fp, " -f - filesys table\n");
fprintf(fp, " -h - hash_table data\n");
fprintf(fp, " -H - hash_table data (verbose)\n");
+ fprintf(fp, " -i - dump dmi_ident data\n");
fprintf(fp, " -k - kernel_table\n");
fprintf(fp, " -K - kernel_table (verbose)\n");
fprintf(fp, " -L - LKCD page cache environment\n");
@@ -663,6 +665,10 @@ cmd_help(void)
dump_registers();
return;
+ case 'i':
+ dump_dmi_info();
+ return;
+
default:
argerrs++;
break;
@@ -707,6 +713,32 @@ dump_registers(void)
ACTIVE() ? "a live system" : "this dumpfile type");
}
+static void
+dump_dmi_info(void)
+{
+ int i, len;
+ ulong dmi_ident_p, vaddr;
+ char buf[BUFSIZE];
+
+ if (!kernel_symbol_exists("dmi_ident")) {
+ error(INFO, "dmi_ident does not exist in this kernel\n");
+ }
+
+ dmi_ident_p = symbol_value("dmi_ident");
+ len = get_array_length("dmi_ident", NULL, 0);
+
+ for (i = 0; i < len; i++) {
+ readmem(dmi_ident_p + (sizeof(void *) * i),
+ KVADDR, &vaddr, sizeof(void *),
+ "dmi_ident", FAULT_ON_ERROR);
+
+ if (!vaddr)
+ continue;
+ read_string(vaddr, buf, BUFSIZE-1);
+ fprintf(fp, " dmi_ident[%d]: %s\n", i, buf);
+ }
+}
+
/*
* Format and display the help menu.
*/
@@ -991,6 +1023,7 @@ char *help_help[] = {
" -f - filesys table",
" -h - hash_table data",
" -H - hash_table data (verbose)",
+" -i - dump dmi_ident data",
" -k - kernel_table",
" -K - kernel_table (verbose)",
" -L - LKCD page cache environment",
--
2.4.3
--
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1:49 a.m.
New subject: [PATCH] help: Introduce -i option to dump dmi_ident[] data
On Sat 2015-12-05 15:16 -0500, Dave Anderson wrote:
Hi Aaron,
This kind of kernel/machine specific information has no place in the
"help" command, which is wholly concerned with crash utility internal
debug related information.
OK, makes sense.
It's probably not worthy of its own command, so maybe it could be
a "sys"
or "mach" option?
I'll opt for "sys".
Thanks,
--
Aaron Tomlin
4:04 a.m.
New subject: [PATCH] sys: Introduce -i option to dump dmi_ident data
This patch introduces a '-i' option to the 'sys' command to allow the
user
to conveniently display the DMI (Desktop Management Interface) table,
if available in the kernel. For example:
crash> sys -i
dmi_ident[1]: LENOVO
dmi_ident[2]: GIET75WW (2.25 )
dmi_ident[3]: 06/24/2014
dmi_ident[4]: LENOVO
dmi_ident[5]: 20AMS22U0C
dmi_ident[6]: ThinkPad X240
dmi_ident[7]: PC00CDZE
dmi_ident[8]: 01338439-0853-CB11-8EBB-CE1D1FC1CBC0
dmi_ident[9]: LENOVO
dmi_ident[10]: 20AMS22U0C
dmi_ident[11]: Not Defined
dmi_ident[12]: L1HF47E00T3
dmi_ident[13]: Not Available
dmi_ident[14]: LENOVO
dmi_ident[15]: 10
dmi_ident[16]: Not Available
dmi_ident[17]: PC00CDZE
dmi_ident[18]: No Asset Information
crash>
Suggested-by: Buland Singh <bsingh(a)redhat.com>
Signed-off-by: Aaron Tomlin <atomlin(a)redhat.com>
---
help.c | 23 ++++++++++++++++++++++-
kernel.c | 31 ++++++++++++++++++++++++++++++-
2 files changed, 52 insertions(+), 2 deletions(-)
diff --git a/help.c b/help.c
index 4834f4b..563cd88 100644
--- a/help.c
+++ b/help.c
@@ -3231,7 +3231,7 @@ NULL
char *help_sys[] = {
"sys",
"system data",
-"[-c [name|number]] [-t] config",
+"[-c [name|number]] [-t] config [-i]",
" 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",
@@ -3254,6 +3254,7 @@ 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 dmi_ident data, if available in the kernel.",
"\nEXAMPLES",
" Display essential system information:\n",
@@ -3318,6 +3319,26 @@ char *help_sys[] = {
" ",
" If the current output radix has been set to 16, the system call numbers",
" will be displayed in hexadecimal.",
+"\n Dump dmi_ident data:\n",
+" %s> sys -i",
+" dmi_ident[1]: LENOVO",
+" dmi_ident[2]: GIET75WW (2.25 )",
+" dmi_ident[3]: 06/24/2014",
+" dmi_ident[4]: LENOVO",
+" dmi_ident[5]: 20AMS22U0C",
+" dmi_ident[6]: ThinkPad X240",
+" dmi_ident[7]: PC00CDZE",
+" dmi_ident[8]: 01338439-0853-CB11-8EBB-CE1D1FC1CBC0",
+" dmi_ident[9]: LENOVO",
+" dmi_ident[10]: 20AMS22U0C",
+" dmi_ident[11]: Not Defined",
+" dmi_ident[12]: L1HF47E00T3",
+" dmi_ident[13]: Not Available",
+" dmi_ident[14]: LENOVO",
+" dmi_ident[15]: 10",
+" dmi_ident[16]: Not Available",
+" dmi_ident[17]: PC00CDZE",
+" dmi_ident[18]: No Asset Information",
NULL
};
diff --git a/kernel.c b/kernel.c
index dbba05a..d9ca676 100644
--- a/kernel.c
+++ b/kernel.c
@@ -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':
@@ -4941,6 +4942,9 @@ cmd_sys(void)
case 't':
show_kernel_taints(buf, VERBOSE);
return;
+ case 'i':
+ dump_dmi_info();
+ return;
default:
argerrs++;
@@ -10112,3 +10116,28 @@ 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, len;
+ ulong dmi_ident_p, vaddr;
+ char buf[BUFSIZE];
+
+ if (!kernel_symbol_exists("dmi_ident")) {
+ error(INFO, "dmi_ident does not exist in this kernel\n");
+ }
+
+ dmi_ident_p = symbol_value("dmi_ident");
+ len = get_array_length("dmi_ident", NULL, 0);
+
+ for (i = 0; i < len; i++) {
+ readmem(dmi_ident_p + (sizeof(void *) * i),
+ KVADDR, &vaddr, sizeof(void *),
+ "dmi_ident", FAULT_ON_ERROR);
+
+ if (!vaddr)
+ continue;
+ read_string(vaddr, buf, BUFSIZE-1);
+ fprintf(fp, " dmi_ident[%d]: %s\n", i, buf);
+ }
+}
--
2.4.3
10:59 a.m.
New subject: [PATCH] sys: Introduce -i option to dump dmi_ident data
Aaron and Buland,
I was just about to check this in when I thought that maybe it could
be a bit more informative than just "dmi_ident[#]: <string>", given
that the output could also incorporate the enum name/index, as is done
with a few other crash commands:
crash> dmi_field
enum dmi_field {
DMI_NONE = 0
DMI_BIOS_VENDOR = 1
DMI_BIOS_VERSION = 2
DMI_BIOS_DATE = 3
DMI_SYS_VENDOR = 4
DMI_PRODUCT_NAME = 5
DMI_PRODUCT_VERSION = 6
DMI_PRODUCT_SERIAL = 7
DMI_PRODUCT_UUID = 8
DMI_BOARD_VENDOR = 9
DMI_BOARD_NAME = 10
DMI_BOARD_VERSION = 11
DMI_BOARD_SERIAL = 12
DMI_BOARD_ASSET_TAG = 13
DMI_CHASSIS_VENDOR = 14
DMI_CHASSIS_TYPE = 15
DMI_CHASSIS_VERSION = 16
DMI_CHASSIS_SERIAL = 17
DMI_CHASSIS_ASSET_TAG = 18
DMI_STRING_MAX = 19
};
Although, gdb doesn't have the dmi_field enum data available like the
above in really old kernels, so in those rare cases it could only be
done as you have. Maybe there could be an index_to_DMI_field() function
that returns the string above, or just a number string if it can't do
the translation?
Dave
----- Original Message -----
This patch introduces a '-i' option to the 'sys'
command to allow the user
to conveniently display the DMI (Desktop Management Interface) table,
if available in the kernel. For example:
crash> sys -i
dmi_ident[1]: LENOVO
dmi_ident[2]: GIET75WW (2.25 )
dmi_ident[3]: 06/24/2014
dmi_ident[4]: LENOVO
dmi_ident[5]: 20AMS22U0C
dmi_ident[6]: ThinkPad X240
dmi_ident[7]: PC00CDZE
dmi_ident[8]: 01338439-0853-CB11-8EBB-CE1D1FC1CBC0
dmi_ident[9]: LENOVO
dmi_ident[10]: 20AMS22U0C
dmi_ident[11]: Not Defined
dmi_ident[12]: L1HF47E00T3
dmi_ident[13]: Not Available
dmi_ident[14]: LENOVO
dmi_ident[15]: 10
dmi_ident[16]: Not Available
dmi_ident[17]: PC00CDZE
dmi_ident[18]: No Asset Information
crash>
Suggested-by: Buland Singh <bsingh(a)redhat.com>
Signed-off-by: Aaron Tomlin <atomlin(a)redhat.com>
---
help.c | 23 ++++++++++++++++++++++-
kernel.c | 31 ++++++++++++++++++++++++++++++-
2 files changed, 52 insertions(+), 2 deletions(-)
diff --git a/help.c b/help.c
index 4834f4b..563cd88 100644
--- a/help.c
+++ b/help.c
@@ -3231,7 +3231,7 @@ NULL
char *help_sys[] = {
"sys",
"system data",
-"[-c [name|number]] [-t] config",
+"[-c [name|number]] [-t] config [-i]",
" 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",
@@ -3254,6 +3254,7 @@ 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 dmi_ident data, if available in the kernel.",
"\nEXAMPLES",
" Display essential system information:\n",
@@ -3318,6 +3319,26 @@ char *help_sys[] = {
" ",
" If the current output radix has been set to 16, the system call
numbers",
" will be displayed in hexadecimal.",
+"\n Dump dmi_ident data:\n",
+" %s> sys -i",
+" dmi_ident[1]: LENOVO",
+" dmi_ident[2]: GIET75WW (2.25 )",
+" dmi_ident[3]: 06/24/2014",
+" dmi_ident[4]: LENOVO",
+" dmi_ident[5]: 20AMS22U0C",
+" dmi_ident[6]: ThinkPad X240",
+" dmi_ident[7]: PC00CDZE",
+" dmi_ident[8]: 01338439-0853-CB11-8EBB-CE1D1FC1CBC0",
+" dmi_ident[9]: LENOVO",
+" dmi_ident[10]: 20AMS22U0C",
+" dmi_ident[11]: Not Defined",
+" dmi_ident[12]: L1HF47E00T3",
+" dmi_ident[13]: Not Available",
+" dmi_ident[14]: LENOVO",
+" dmi_ident[15]: 10",
+" dmi_ident[16]: Not Available",
+" dmi_ident[17]: PC00CDZE",
+" dmi_ident[18]: No Asset Information",
NULL
};
diff --git a/kernel.c b/kernel.c
index dbba05a..d9ca676 100644
--- a/kernel.c
+++ b/kernel.c
@@ -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':
@@ -4941,6 +4942,9 @@ cmd_sys(void)
case 't':
show_kernel_taints(buf, VERBOSE);
return;
+ case 'i':
+ dump_dmi_info();
+ return;
default:
argerrs++;
@@ -10112,3 +10116,28 @@ 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, len;
+ ulong dmi_ident_p, vaddr;
+ char buf[BUFSIZE];
+
+ if (!kernel_symbol_exists("dmi_ident")) {
+ error(INFO, "dmi_ident does not exist in this kernel\n");
+ }
+
+ dmi_ident_p = symbol_value("dmi_ident");
+ len = get_array_length("dmi_ident", NULL, 0);
+
+ for (i = 0; i < len; i++) {
+ readmem(dmi_ident_p + (sizeof(void *) * i),
+ KVADDR, &vaddr, sizeof(void *),
+ "dmi_ident", FAULT_ON_ERROR);
+
+ if (!vaddr)
+ continue;
+ read_string(vaddr, buf, BUFSIZE-1);
+ fprintf(fp, " dmi_ident[%d]: %s\n", i, buf);
+ }
+}
--
2.4.3
--
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Dave Anderson -
Dave Anderson