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Commit 008f29d3 authored by Shawn Bohrer's avatar Shawn Bohrer Committed by Arnaldo Carvalho de Melo
Browse files

perf trace: Handle DT_UNKNOWN on filesystems that don't support d_type 



Some filesystems like xfs and reiserfs will return DT_UNKNOWN for the
d_type.  Handle this case by calling stat() to determine the type.

Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1290355779-3276-1-git-send-email-sbohrer@rgmadvisors.com>
Signed-off-by: default avatarShawn Bohrer <sbohrer@rgmadvisors.com>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 9d1faba5

tools/perf/builtin-trace.c

+25 −8
Original line number Diff line number Diff line
@@ -301,17 +301,34 @@ static int parse_scriptname(const struct option *opt __used, 
	return 0;

}



#define for_each_lang(scripts_dir, lang_dirent, lang_next)		\

/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */

static int is_directory(const char *base_path, const struct dirent *dent)

{

	char path[PATH_MAX];

	struct stat st;



	sprintf(path, "%s/%s", base_path, dent->d_name);

	if (stat(path, &st))

		return 0;



	return S_ISDIR(st.st_mode);

}



#define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\

	while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) &&	\

	       lang_next)						\

		if (lang_dirent.d_type == DT_DIR &&			\

		if ((lang_dirent.d_type == DT_DIR ||			\

		     (lang_dirent.d_type == DT_UNKNOWN &&		\

		      is_directory(scripts_path, &lang_dirent))) &&	\

		    (strcmp(lang_dirent.d_name, ".")) &&		\

		    (strcmp(lang_dirent.d_name, "..")))



#define for_each_script(lang_dir, script_dirent, script_next)		\

#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\

	while (!readdir_r(lang_dir, &script_dirent, &script_next) &&	\

	       script_next)						\

		if (script_dirent.d_type != DT_DIR)

		if (script_dirent.d_type != DT_DIR &&			\

		    (script_dirent.d_type != DT_UNKNOWN ||		\

		     !is_directory(lang_path, &script_dirent)))





#define RECORD_SUFFIX			"-record"
@@ -466,14 +483,14 @@ static int list_available_scripts(const struct option *opt __used, 
	if (!scripts_dir)

		return -1;



	for_each_lang(scripts_dir, lang_dirent, lang_next) {

	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {

		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,

			 lang_dirent.d_name);

		lang_dir = opendir(lang_path);

		if (!lang_dir)

			continue;



		for_each_script(lang_dir, script_dirent, script_next) {

		for_each_script(lang_path, lang_dir, script_dirent, script_next) {

			script_root = strdup(script_dirent.d_name);

			str = ends_with(script_root, REPORT_SUFFIX);

			if (str) {
@@ -514,14 +531,14 @@ static char *get_script_path(const char *script_root, const char *suffix) 
	if (!scripts_dir)

		return NULL;



	for_each_lang(scripts_dir, lang_dirent, lang_next) {

	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {

		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,

			 lang_dirent.d_name);

		lang_dir = opendir(lang_path);

		if (!lang_dir)

			continue;



		for_each_script(lang_dir, script_dirent, script_next) {

		for_each_script(lang_path, lang_dir, script_dirent, script_next) {

			__script_root = strdup(script_dirent.d_name);

			str = ends_with(__script_root, suffix);

			if (str) {