7:07 a.m.
--- crash-7.1.4/defs.h 2015-12-16 18:59:36.000000000 +0300
+++ crash-7.1.4.test/defs.h 2016-04-04 09:46:42.615294482 +0300
@@ -4340,6 +4340,7 @@
void cmd_pointer(void); /* symbols.c */
void cmd_whatis(void); /* symbols.c */
void cmd_p(void); /* symbols.c */
+void cmd_types(void); /* symbols.c */
void cmd_mount(void); /* filesys.c */
void cmd_files(void); /* filesys.c */
void cmd_fuser(void); /* filesys.c */
@@ -4874,6 +4875,7 @@
extern char *help_sys[];
extern char *help_task[];
extern char *help_timer[];
+extern char *help_types[];
extern char *help_union[];
extern char *help_vm[];
extern char *help_vtop[];
@@ -6235,7 +6237,7 @@
* gdb/symtab.c
*/
extern void gdb_command_funnel(struct gnu_request *);
-
+extern int search_matched_struct_symbols (const char *, int, int, const char ***, int
**);
/*
* gdb/symfile.c
*/
--- crash-7.1.4/global_data.c 2015-12-16 18:59:36.000000000 +0300
+++ crash-7.1.4.test/global_data.c 2016-03-31 16:35:25.753285231 +0300
@@ -114,6 +114,7 @@
{"task", cmd_task, help_task, REFRESH_TASK_TABLE},
{"test", cmd_test, NULL, HIDDEN_COMMAND},
{"timer", cmd_timer, help_timer, 0},
+ {"types", cmd_types, help_types, 0},
{"union", cmd_union, help_union, 0},
{"vm", cmd_vm, help_vm, REFRESH_TASK_TABLE},
{"vtop", cmd_vtop, help_vtop, REFRESH_TASK_TABLE},
--- crash-7.1.4/help.c 2015-12-16 18:59:36.000000000 +0300
+++ crash-7.1.4.test/help.c 2016-04-01 13:08:48.878755448 +0300
@@ -5658,6 +5658,62 @@
NULL
};
+char *help_types[] = {
+"types",
+"search declared structures with particular size and contents",
+"[-f field] -r range",
+"The arguments are as follows:\n",
+" -f field The field type (or substruct of type name) which the",
+" structure should contain",
+" -r range The range or the exact size of the structure we're",
+" looking for.",
+"\nEXAMPLES:",
+"\n1. Find all structures which have size from 190 up to 200 bytes\n\n"
+" %s> types -r 190-200",
+"192 apic",
+"192 ata_eh_context",
+"192 cper_sec_proc_generic",
+"192 cpuinfo_x86",
+"192 pebs_record_hsw",
+"196 ethtool_drvinfo",
+"196 kioctx",
+"196 vm86plus_struct",
+"200 apple_sc",
+"200 cper_pstore_record",
+"200 kernel_vm86_struct",
+"200 linux_binprm",
+"200 scsi_transport_template",
+"\n2. Find all structures which have size from 190 up to 200 bytes and",
+"which contain member of type '*list*'\n",
+" %s> types -r 190-200 -f list",
+"196 kioctx",
+"200 scsi_transport_template",
+"",
+"`struct kioctx` really has members of types `hlist_node`, `list_head`.",
+"However, the last structure is more subtle. It contains field of type",
+"`list_head` within itself.",
+"That is:",
+"`scsi_transport_template` contains member of type `transport_container`",
+"`transport_container` has `attribute_container`",
+"`attribute_container` has `list_head`.",
+"Structure `list_head` has poiners to `list_head`",
+"This is the place where algorithm triggers. It delves into the structure",
+"_only_ if the particular member is a structure, not a pointer.",
+"If it is a pointer, we only match name of type against the given pattern.",
+"\n3. Find all ths structures which have size exactly 36 bytes and which",
+"contain member of type '*list_head*'\n",
+" %s> types -r 36 -f list_head",
+"36 agp_front_data",
+"36 audit_watch",
+"36 blkio_cgroup",
+"36 blkio_policy_type",
+"36 device_domain_info",
+"36 dmar_drhd_unit",
+"36 dmar_rmrr_unit",
+"........",
+NULL
+};
+
char *help_ptob[] = {
"ptob",
"page to bytes",
--- crash-7.1.4/symbols.c 2015-12-16 18:59:36.000000000 +0300
+++ crash-7.1.4.test/symbols.c 2016-04-04 10:12:40.271317840 +0300
@@ -33,6 +33,7 @@
static int compare_syms(const void *, const void *);
static int compare_mods(const void *, const void *);
static int compare_prios(const void *v1, const void *v2);
+static int compare_size_name(const void *, const void *);
static asection *get_kernel_section(char *);
static char * get_section(ulong vaddr, char *buf);
static void symbol_dump(ulong, char *);
@@ -5976,6 +5977,74 @@
return TRUE;
}
+static int
+compare_size_name(const void *va, const void *vb) {
+ const struct {
+ char *n; int s;
+ } *a = va, *b = vb;
+
+ if (a->s == b->s)
+ return strcmp(a->n, b->n);
+ else
+ return a->s < b->s ? -1 : 1;
+}
+
+void
+cmd_types(void)
+{
+ const char *field = NULL, **out_name = NULL;
+ char *sep, tmp[16];
+
+ int lowest, highest, i, c;
+ int *out_size = NULL;
+ struct { const char *n; int s; } *struct_output;
+
+ lowest = highest = UNUSED;
+
+ while ((c = getopt(argcnt, args, "f:r:")) != EOF) {
+ switch (c)
+ {
+ case 'f':
+ field = optarg;
+ break;
+ case 'r':
+ strncpy(tmp, optarg, 15);
+ if ((sep = strstr(tmp, "-")) != NULL)
+ *(sep++) = '\0';
+
+ lowest = stol(tmp, FAULT_ON_ERROR, NULL);
+
+ if (sep)
+ highest = stol(sep, FAULT_ON_ERROR, NULL);
+ else
+ highest = lowest;
+
+ break;
+ default:
+ cmd_usage(pc->curcmd, SYNOPSIS);
+ }
+ }
+
+ if (lowest == UNUSED || highest == UNUSED)
+ error(FATAL, "You should specify range\n");
+
+ c = search_matched_struct_symbols(field, lowest, highest,
+ &out_name, &out_size);
+
+ struct_output = malloc(sizeof(*struct_output) * c);
+ for (i = 0; i < c; i++) {
+ struct_output[i].n = out_name[i];
+ struct_output[i].s = out_size[i];
+ }
+
+ qsort(struct_output, c, sizeof(*struct_output), compare_size_name);
+
+ for (i = 0; i < c; i++)
+ fprintf(fp, "%d\t%s\n", struct_output[i].s, struct_output[i].n);
+
+ free(struct_output);
+ return;
+}
static void
cmd_datatype_common(ulong flags)
{