/*
   * builtin-buildid-list.c
   *

   * Builtin buildid-list command: list buildids in perf.data, in the running
   * kernel and in ELF files.

   *
   * Copyright (C) 2009, Red Hat Inc.
   * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
   */
  #include "builtin.h"
  #include "perf.h"

  #include "util/build-id.h"

  #include "util/cache.h"

  #include "util/debug.h"

  #include "util/parse-options.h"

  #include "util/session.h"

  #include "util/symbol.h"

  #include <libelf.h>

  static const char *input_name;

  static bool force;

  static bool show_kernel;

  static bool with_hits;

  static const char * const buildid_list_usage[] = {

  	"perf buildid-list [<options>]",

  	NULL
  };
  
  static const struct option options[] = {

  	OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),

  	OPT_STRING('i', "input", &input_name, "file",
  		    "input file name"),
  	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),

  	OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),

  	OPT_INCR('v', "verbose", &verbose,

  		    "be more verbose"),

  	OPT_END()
  };

  static int sysfs__fprintf_build_id(FILE *fp)
  {
  	u8 kallsyms_build_id[BUILD_ID_SIZE];
  	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
  
  	if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id,
  				 sizeof(kallsyms_build_id)) != 0)
  		return -1;
  
  	build_id__sprintf(kallsyms_build_id, sizeof(kallsyms_build_id),
  			  sbuild_id);
  	fprintf(fp, "%s
  ", sbuild_id);
  	return 0;
  }

  static int filename__fprintf_build_id(const char *name, FILE *fp)

  {

  	u8 build_id[BUILD_ID_SIZE];
  	char sbuild_id[BUILD_ID_SIZE * 2 + 1];

  	if (filename__read_build_id(name, build_id,
  				    sizeof(build_id)) != sizeof(build_id))
  		return 0;
  
  	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
  	return fprintf(fp, "%s
  ", sbuild_id);
  }

  static int perf_session__list_build_ids(void)
  {
  	struct perf_session *session;

  	elf_version(EV_CURRENT);

  	session = perf_session__new(input_name, O_RDONLY, force, false,
  				    &build_id__mark_dso_hit_ops);
  	if (session == NULL)
  		return -1;

  	/*
  	 * See if this is an ELF file first:
  	 */
  	if (filename__fprintf_build_id(session->filename, stdout))
  		goto out;

  	if (with_hits)
  		perf_session__process_events(session, &build_id__mark_dso_hit_ops);
  
  	perf_session__fprintf_dsos_buildid(session, stdout, with_hits);

  out:

  	perf_session__delete(session);
  	return 0;
  }

  static int __cmd_buildid_list(void)
  {

  	if (show_kernel)
  		return sysfs__fprintf_build_id(stdout);
  
  	return perf_session__list_build_ids();
  }

  int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
  {
  	argc = parse_options(argc, argv, options, buildid_list_usage, 0);
  	setup_pager();
  	return __cmd_buildid_list();
  }