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#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <libkdumpfile/kdumpfile.h>
static int list_attr_recursive(kdump_ctx_t *, kdump_attr_ref_t *, int);
static int show_attr(kdump_ctx_t *, kdump_attr_ref_t *, int, const char *);
static int
list_attr_recursive(kdump_ctx_t *ctx, kdump_attr_ref_t *dir, int indent)
{
kdump_attr_iter_t it;
kdump_status status;
int ret;
status = kdump_attr_ref_iter_start(ctx, dir, &it);
if (status != KDUMP_OK) {
fprintf(stderr, "kdump_attr_ref_iter_start failed: %s\n",
kdump_get_err(ctx));
return -1;
}
ret = 0;
while (it.key) {
ret = show_attr(ctx, &it.pos, indent, it.key);
if (ret)
break;
status = kdump_attr_iter_next(ctx, &it);
if (status != KDUMP_OK) {
fprintf(stderr, "kdump_attr_iter_next failed: %s\n",
kdump_get_err(ctx));
ret = -1;
break;
}
}
kdump_attr_iter_end(ctx, &it);
return ret;
}
static int
print_bitmap(kdump_ctx_t *ctx, kdump_bmp_t *bmp)
{
kdump_addr_t idx;
const char *delim = "";
kdump_status status;
idx = 0;
fputs("[ ", stdout);
while ( (status = kdump_bmp_find_set(bmp, &idx)) == KDUMP_OK) {
kdump_addr_t start = idx;
status = kdump_bmp_find_clear(bmp, &idx);
if (status != KDUMP_OK) {
fprintf(stderr, "kdump_bmp_find_clear failed: %s\n",
kdump_bmp_get_err(bmp));
return -1;
}
printf("%s%llx-%llx",
delim,
(unsigned long long) start,
(unsigned long long) idx - 1);
delim = ", ";
}
fputs("]\n", stdout);
return 0;
}
static int
print_blob(kdump_ctx_t *ctx, kdump_blob_t *blob)
{
unsigned char *data;
size_t size;
data = kdump_blob_pin(blob);
size = kdump_blob_size(blob);
fputs("[ ", stdout);
while (size--)
printf("%02X", *data++);
fputs(" ]\n", stdout);
kdump_blob_unpin(blob);
return 0;
}
static int
show_attr(kdump_ctx_t *ctx, kdump_attr_ref_t *ref, int indent, const char *key)
{
kdump_attr_t attr;
kdump_status status;
if (key && *key) {
printf("%*s%s: ", indent * 2, "", key);
++indent;
}
status = kdump_attr_ref_get(ctx, ref, &attr);
if (status != KDUMP_OK) {
fprintf(stderr, "kdump_attr_ref_get failed: %s\n",
kdump_get_err(ctx));
return -1;
}
switch (attr.type) {
case KDUMP_STRING:
printf("%s\n", attr.val.string);
break;
case KDUMP_NUMBER:
printf("%llu\n", (unsigned long long) attr.val.number);
break;
case KDUMP_ADDRESS:
printf("%llx\n", (unsigned long long) attr.val.address);
break;
case KDUMP_BITMAP:
print_bitmap(ctx, attr.val.bitmap);
break;
case KDUMP_BLOB:
print_blob(ctx, attr.val.blob);
break;
case KDUMP_DIRECTORY:
if (key && *key)
putchar('\n');
list_attr_recursive(ctx, ref, indent);
break;
default:
printf("<unknown>\n");
}
return 0;
}
int
main(int argc, char **argv)
{
if (argc < 2 || argc > 3) {
fprintf(stderr, "Usage: %s <dumpfile> [<attr>]\n", argv[0]);
return 1;
}
int fd = open(argv[1], O_RDONLY);
if (fd < 0) {
perror(argv[1]);
return 2;
}
kdump_status res;
kdump_ctx_t *ctx = kdump_new();
if (!ctx) {
perror("Cannot allocate kdump context");
return -1;
}
res = kdump_set_filename(ctx, argv[1]);
if (res != KDUMP_OK)
fprintf(stderr, "Warning: Cannot set file name: %s\n",
kdump_get_err(ctx));
res = kdump_open_fd(ctx, fd);
if (res != KDUMP_OK) {
fprintf(stderr, "File initialization failed: %s\n",
kdump_get_err(ctx));
kdump_free(ctx);
return 2;
}
kdump_attr_ref_t root;
res = kdump_attr_ref(ctx, argv[2], &root);
if (res != KDUMP_OK) {
fprintf(stderr, "kdump_attr_ref failed: %s\n",
kdump_get_err(ctx));
kdump_free(ctx);
return 2;
}
if (show_attr(ctx, &root, 0, argv[2])) {
kdump_free(ctx);
return 2;
}
kdump_attr_unref(ctx, &root);
kdump_free(ctx);
close(fd);
return 0;
}
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