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authorRobert Richter <robert.richter@amd.com>2011-11-25 11:38:40 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-12-12 08:44:00 -0200
commit38efb539c13f8f173e381435cdd40463ab5d38de (patch)
treebbb838b6a52b20965b197a01807392e50193f321 /tools/perf
parentb3d9468a8bd218a695e3a0ff112cd4efd27b670a (diff)
downloadlinux-linaro-stable-38efb539c13f8f173e381435cdd40463ab5d38de.tar.gz
perf script: Fix mem leaks and NULL pointer checks around strdup()s
Fix mem leaks and missing NULL pointer checks after strdup(). And get_script_path() did not free __script_root in case of continue. Introduce a helper function get_script_root(). Cc: Ingo Molnar <mingo@elte.hu> Link: http://lkml.kernel.org/r/1322217520-3287-1-git-send-email-robert.richter@amd.com Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/builtin-script.c48
1 files changed, 29 insertions, 19 deletions
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 619d6dcaa1d9..ccbfd56d7549 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -693,7 +693,8 @@ static int parse_output_fields(const struct option *opt __used,
type = PERF_TYPE_RAW;
else {
fprintf(stderr, "Invalid event type in field string.\n");
- return -EINVAL;
+ rc = -EINVAL;
+ goto out;
}
if (output[type].user_set)
@@ -935,6 +936,24 @@ static int read_script_info(struct script_desc *desc, const char *filename)
return 0;
}
+static char *get_script_root(struct dirent *script_dirent, const char *suffix)
+{
+ char *script_root, *str;
+
+ script_root = strdup(script_dirent->d_name);
+ if (!script_root)
+ return NULL;
+
+ str = (char *)ends_with(script_root, suffix);
+ if (!str) {
+ free(script_root);
+ return NULL;
+ }
+
+ *str = '\0';
+ return script_root;
+}
+
static int list_available_scripts(const struct option *opt __used,
const char *s __used, int unset __used)
{
@@ -946,7 +965,6 @@ static int list_available_scripts(const struct option *opt __used,
struct script_desc *desc;
char first_half[BUFSIZ];
char *script_root;
- char *str;
snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
@@ -962,16 +980,14 @@ static int list_available_scripts(const struct option *opt __used,
continue;
for_each_script(lang_path, lang_dir, script_dirent, script_next) {
- script_root = strdup(script_dirent.d_name);
- str = (char *)ends_with(script_root, REPORT_SUFFIX);
- if (str) {
- *str = '\0';
+ script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
+ if (script_root) {
desc = script_desc__findnew(script_root);
snprintf(script_path, MAXPATHLEN, "%s/%s",
lang_path, script_dirent.d_name);
read_script_info(desc, script_path);
+ free(script_root);
}
- free(script_root);
}
}
@@ -993,8 +1009,7 @@ static char *get_script_path(const char *script_root, const char *suffix)
char script_path[MAXPATHLEN];
DIR *scripts_dir, *lang_dir;
char lang_path[MAXPATHLEN];
- char *str, *__script_root;
- char *path = NULL;
+ char *__script_root;
snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
@@ -1010,23 +1025,18 @@ static char *get_script_path(const char *script_root, const char *suffix)
continue;
for_each_script(lang_path, lang_dir, script_dirent, script_next) {
- __script_root = strdup(script_dirent.d_name);
- str = (char *)ends_with(__script_root, suffix);
- if (str) {
- *str = '\0';
- if (strcmp(__script_root, script_root))
- continue;
+ __script_root = get_script_root(&script_dirent, suffix);
+ if (__script_root && !strcmp(script_root, __script_root)) {
+ free(__script_root);
snprintf(script_path, MAXPATHLEN, "%s/%s",
lang_path, script_dirent.d_name);
- path = strdup(script_path);
- free(__script_root);
- break;
+ return strdup(script_path);
}
free(__script_root);
}
}
- return path;
+ return NULL;
}
static bool is_top_script(const char *script_path)