summaryrefslogtreecommitdiffstats
path: root/tools/perf/tests/builtin-test-list.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/tests/builtin-test-list.c')
-rw-r--r--tools/perf/tests/builtin-test-list.c207
1 files changed, 207 insertions, 0 deletions
diff --git a/tools/perf/tests/builtin-test-list.c b/tools/perf/tests/builtin-test-list.c
new file mode 100644
index 000000000..a65b9e547
--- /dev/null
+++ b/tools/perf/tests/builtin-test-list.c
@@ -0,0 +1,207 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/zalloc.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <subcmd/exec-cmd.h>
+#include <subcmd/parse-options.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include "builtin.h"
+#include "builtin-test-list.h"
+#include "color.h"
+#include "debug.h"
+#include "hist.h"
+#include "intlist.h"
+#include "string2.h"
+#include "symbol.h"
+#include "tests.h"
+#include "util/rlimit.h"
+
+
+/*
+ * As this is a singleton built once for the run of the process, there is
+ * no value in trying to free it and just let it stay around until process
+ * exits when it's cleaned up.
+ */
+static size_t files_num = 0;
+static struct script_file *files = NULL;
+static int files_max_width = 0;
+
+static const char *shell_tests__dir(char *path, size_t size)
+{
+ const char *devel_dirs[] = { "./tools/perf/tests", "./tests", };
+ char *exec_path;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(devel_dirs); ++i) {
+ struct stat st;
+
+ if (!lstat(devel_dirs[i], &st)) {
+ scnprintf(path, size, "%s/shell", devel_dirs[i]);
+ if (!lstat(devel_dirs[i], &st))
+ return path;
+ }
+ }
+
+ /* Then installed path. */
+ exec_path = get_argv_exec_path();
+ scnprintf(path, size, "%s/tests/shell", exec_path);
+ free(exec_path);
+ return path;
+}
+
+static const char *shell_test__description(char *description, size_t size,
+ const char *path, const char *name)
+{
+ FILE *fp;
+ char filename[PATH_MAX];
+ int ch;
+
+ path__join(filename, sizeof(filename), path, name);
+ fp = fopen(filename, "r");
+ if (!fp)
+ return NULL;
+
+ /* Skip first line - should be #!/bin/sh Shebang */
+ do {
+ ch = fgetc(fp);
+ } while (ch != EOF && ch != '\n');
+
+ description = fgets(description, size, fp);
+ fclose(fp);
+
+ /* Assume first char on line is omment everything after that desc */
+ return description ? strim(description + 1) : NULL;
+}
+
+/* Is this full file path a shell script */
+static bool is_shell_script(const char *path)
+{
+ const char *ext;
+
+ ext = strrchr(path, '.');
+ if (!ext)
+ return false;
+ if (!strcmp(ext, ".sh")) { /* Has .sh extension */
+ if (access(path, R_OK | X_OK) == 0) /* Is executable */
+ return true;
+ }
+ return false;
+}
+
+/* Is this file in this dir a shell script (for test purposes) */
+static bool is_test_script(const char *path, const char *name)
+{
+ char filename[PATH_MAX];
+
+ path__join(filename, sizeof(filename), path, name);
+ if (!is_shell_script(filename)) return false;
+ return true;
+}
+
+/* Duplicate a string and fall over and die if we run out of memory */
+static char *strdup_check(const char *str)
+{
+ char *newstr;
+
+ newstr = strdup(str);
+ if (!newstr) {
+ pr_err("Out of memory while duplicating test script string\n");
+ abort();
+ }
+ return newstr;
+}
+
+static void append_script(const char *dir, const char *file, const char *desc)
+{
+ struct script_file *files_tmp;
+ size_t files_num_tmp;
+ int width;
+
+ files_num_tmp = files_num + 1;
+ if (files_num_tmp >= SIZE_MAX) {
+ pr_err("Too many script files\n");
+ abort();
+ }
+ /* Realloc is good enough, though we could realloc by chunks, not that
+ * anyone will ever measure performance here */
+ files_tmp = realloc(files,
+ (files_num_tmp + 1) * sizeof(struct script_file));
+ if (files_tmp == NULL) {
+ pr_err("Out of memory while building test list\n");
+ abort();
+ }
+ /* Add file to end and NULL terminate the struct array */
+ files = files_tmp;
+ files_num = files_num_tmp;
+ files[files_num - 1].dir = strdup_check(dir);
+ files[files_num - 1].file = strdup_check(file);
+ files[files_num - 1].desc = strdup_check(desc);
+ files[files_num].dir = NULL;
+ files[files_num].file = NULL;
+ files[files_num].desc = NULL;
+
+ width = strlen(desc); /* Track max width of desc */
+ if (width > files_max_width)
+ files_max_width = width;
+}
+
+static void append_scripts_in_dir(const char *path)
+{
+ struct dirent **entlist;
+ struct dirent *ent;
+ int n_dirs, i;
+ char filename[PATH_MAX];
+
+ /* List files, sorted by alpha */
+ n_dirs = scandir(path, &entlist, NULL, alphasort);
+ if (n_dirs == -1)
+ return;
+ for (i = 0; i < n_dirs && (ent = entlist[i]); i++) {
+ if (ent->d_name[0] == '.')
+ continue; /* Skip hidden files */
+ if (is_test_script(path, ent->d_name)) { /* It's a test */
+ char bf[256];
+ const char *desc = shell_test__description
+ (bf, sizeof(bf), path, ent->d_name);
+
+ if (desc) /* It has a desc line - valid script */
+ append_script(path, ent->d_name, desc);
+ } else if (is_directory(path, ent)) { /* Scan the subdir */
+ path__join(filename, sizeof(filename),
+ path, ent->d_name);
+ append_scripts_in_dir(filename);
+ }
+ }
+ for (i = 0; i < n_dirs; i++) /* Clean up */
+ zfree(&entlist[i]);
+ free(entlist);
+}
+
+const struct script_file *list_script_files(void)
+{
+ char path_dir[PATH_MAX];
+ const char *path;
+
+ if (files)
+ return files; /* Singleton - we already know our list */
+
+ path = shell_tests__dir(path_dir, sizeof(path_dir)); /* Walk dir */
+ append_scripts_in_dir(path);
+
+ return files;
+}
+
+int list_script_max_width(void)
+{
+ list_script_files(); /* Ensure we have scanned all scripts */
+ return files_max_width;
+}