/*
   * 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/debug.h"

  #include "util/dso.h"

  #include <subcmd/pager.h>

  #include <subcmd/parse-options.h>

  #include "util/session.h"

  #include "util/symbol.h"

  #include "util/data.h"

  #include <errno.h>

  #include <linux/err.h>

  static int sysfs__fprintf_build_id(FILE *fp)
  {

  	char sbuild_id[SBUILD_ID_SIZE];

  	int ret;

  	ret = sysfs__sprintf_build_id("/", sbuild_id);
  	if (ret != sizeof(sbuild_id))
  		return ret < 0 ? ret : -EINVAL;

  	return fprintf(fp, "%s
  ", sbuild_id);

  }

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

  {

  	char sbuild_id[SBUILD_ID_SIZE];

  	int ret;

  	ret = filename__sprintf_build_id(name, sbuild_id);
  	if (ret != sizeof(sbuild_id))
  		return ret < 0 ? ret : -EINVAL;

  	return fprintf(fp, "%s
  ", sbuild_id);
  }

  static bool dso__skip_buildid(struct dso *dso, int with_hits)
  {
  	return with_hits && !dso->hit;
  }

  static int perf_session__list_build_ids(bool force, bool with_hits)

  {
  	struct perf_session *session;

  	struct perf_data data = {

  		.path  = input_name,
  		.mode  = PERF_DATA_MODE_READ,
  		.force = force,

  	};

  	symbol__elf_init();

  	/*
  	 * See if this is an ELF file first:
  	 */

  	if (filename__fprintf_build_id(input_name, stdout) > 0)

  		goto out;

  	session = perf_session__new(&data, false, &build_id__mark_dso_hit_ops);

  	if (IS_ERR(session))
  		return PTR_ERR(session);

  
  	/*
  	 * We take all buildids when the file contains AUX area tracing data
  	 * because we do not decode the trace because it would take too long.
  	 */

  	if (!perf_data__is_pipe(&data) &&

  	    perf_header__has_feat(&session->header, HEADER_AUXTRACE))
  		with_hits = false;

  	/*
  	 * in pipe-mode, the only way to get the buildids is to parse
  	 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
  	 */

  	if (with_hits || perf_data__is_pipe(&data))

  		perf_session__process_events(session);

  	perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);

  	perf_session__delete(session);

  out:

  	return 0;
  }

  int cmd_buildid_list(int argc, const char **argv)

  {

  	bool show_kernel = false;
  	bool with_hits = false;
  	bool force = false;

  	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()
  	};
  	const char * const buildid_list_usage[] = {
  		"perf buildid-list [<options>]",
  		NULL
  	};

  	argc = parse_options(argc, argv, options, buildid_list_usage, 0);
  	setup_pager();

  
  	if (show_kernel)

  		return !(sysfs__fprintf_build_id(stdout) > 0);

  	return perf_session__list_build_ids(force, with_hits);

  }