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-rw-r--r--t/helper/test-drop-caches.c13
-rw-r--r--t/helper/test-path-utils.c113
-rw-r--r--t/helper/test-run-command.c138
3 files changed, 257 insertions, 7 deletions
diff --git a/t/helper/test-drop-caches.c b/t/helper/test-drop-caches.c
index d6bcfddf13..7b4278462b 100644
--- a/t/helper/test-drop-caches.c
+++ b/t/helper/test-drop-caches.c
@@ -8,18 +8,21 @@ static int cmd_sync(void)
{
char Buffer[MAX_PATH];
DWORD dwRet;
- char szVolumeAccessPath[] = "\\\\.\\X:";
+ char szVolumeAccessPath[] = "\\\\.\\XXXX:";
HANDLE hVolWrite;
- int success = 0;
+ int success = 0, dos_drive_prefix;
dwRet = GetCurrentDirectory(MAX_PATH, Buffer);
if ((0 == dwRet) || (dwRet > MAX_PATH))
return error("Error getting current directory");
- if ((Buffer[0] < 'A') || (Buffer[0] > 'Z'))
- return error("Invalid drive letter '%c'", Buffer[0]);
+ dos_drive_prefix = has_dos_drive_prefix(Buffer);
+ if (!dos_drive_prefix)
+ return error("'%s': invalid drive letter", Buffer);
+
+ memcpy(szVolumeAccessPath, Buffer, dos_drive_prefix);
+ szVolumeAccessPath[dos_drive_prefix] = '\0';
- szVolumeAccessPath[4] = Buffer[0];
hVolWrite = CreateFile(szVolumeAccessPath, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if (INVALID_HANDLE_VALUE == hVolWrite)
diff --git a/t/helper/test-path-utils.c b/t/helper/test-path-utils.c
index ae091d9b3e..e737a941d3 100644
--- a/t/helper/test-path-utils.c
+++ b/t/helper/test-path-utils.c
@@ -177,6 +177,99 @@ static int is_dotgitmodules(const char *path)
return is_hfs_dotgitmodules(path) || is_ntfs_dotgitmodules(path);
}
+/*
+ * A very simple, reproducible pseudo-random generator. Copied from
+ * `test-genrandom.c`.
+ */
+static uint64_t my_random_value = 1234;
+
+static uint64_t my_random(void)
+{
+ my_random_value = my_random_value * 1103515245 + 12345;
+ return my_random_value;
+}
+
+/*
+ * A fast approximation of the square root, without requiring math.h.
+ *
+ * It uses Newton's method to approximate the solution of 0 = x^2 - value.
+ */
+static double my_sqrt(double value)
+{
+ const double epsilon = 1e-6;
+ double x = value;
+
+ if (value == 0)
+ return 0;
+
+ for (;;) {
+ double delta = (value / x - x) / 2;
+ if (delta < epsilon && delta > -epsilon)
+ return x + delta;
+ x += delta;
+ }
+}
+
+static int protect_ntfs_hfs_benchmark(int argc, const char **argv)
+{
+ size_t i, j, nr, min_len = 3, max_len = 20;
+ char **names;
+ int repetitions = 15, file_mode = 0100644;
+ uint64_t begin, end;
+ double m[3][2], v[3][2];
+ uint64_t cumul;
+ double cumul2;
+
+ if (argc > 1 && !strcmp(argv[1], "--with-symlink-mode")) {
+ file_mode = 0120000;
+ argc--;
+ argv++;
+ }
+
+ nr = argc > 1 ? strtoul(argv[1], NULL, 0) : 1000000;
+ ALLOC_ARRAY(names, nr);
+
+ if (argc > 2) {
+ min_len = strtoul(argv[2], NULL, 0);
+ if (argc > 3)
+ max_len = strtoul(argv[3], NULL, 0);
+ if (min_len > max_len)
+ die("min_len > max_len");
+ }
+
+ for (i = 0; i < nr; i++) {
+ size_t len = min_len + (my_random() % (max_len + 1 - min_len));
+
+ names[i] = xmallocz(len);
+ while (len > 0)
+ names[i][--len] = (char)(' ' + (my_random() % ('\x7f' - ' ')));
+ }
+
+ for (protect_ntfs = 0; protect_ntfs < 2; protect_ntfs++)
+ for (protect_hfs = 0; protect_hfs < 2; protect_hfs++) {
+ cumul = 0;
+ cumul2 = 0;
+ for (i = 0; i < repetitions; i++) {
+ begin = getnanotime();
+ for (j = 0; j < nr; j++)
+ verify_path(names[j], file_mode);
+ end = getnanotime();
+ printf("protect_ntfs = %d, protect_hfs = %d: %lfms\n", protect_ntfs, protect_hfs, (end-begin) / (double)1e6);
+ cumul += end - begin;
+ cumul2 += (end - begin) * (end - begin);
+ }
+ m[protect_ntfs][protect_hfs] = cumul / (double)repetitions;
+ v[protect_ntfs][protect_hfs] = my_sqrt(cumul2 / (double)repetitions - m[protect_ntfs][protect_hfs] * m[protect_ntfs][protect_hfs]);
+ printf("mean: %lfms, stddev: %lfms\n", m[protect_ntfs][protect_hfs] / (double)1e6, v[protect_ntfs][protect_hfs] / (double)1e6);
+ }
+
+ for (protect_ntfs = 0; protect_ntfs < 2; protect_ntfs++)
+ for (protect_hfs = 0; protect_hfs < 2; protect_hfs++)
+ printf("ntfs=%d/hfs=%d: %lf%% slower\n", protect_ntfs, protect_hfs, (m[protect_ntfs][protect_hfs] - m[0][0]) * 100 / m[0][0]);
+
+ return 0;
+}
+
int cmd__path_utils(int argc, const char **argv)
{
if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
@@ -291,6 +384,26 @@ int cmd__path_utils(int argc, const char **argv)
return !!res;
}
+ if (argc > 1 && !strcmp(argv[1], "protect_ntfs_hfs"))
+ return !!protect_ntfs_hfs_benchmark(argc - 1, argv + 1);
+
+ if (argc > 1 && !strcmp(argv[1], "is_valid_path")) {
+ int res = 0, expect = 1, i;
+
+ for (i = 2; i < argc; i++)
+ if (!strcmp("--not", argv[i]))
+ expect = 0;
+ else if (expect != is_valid_path(argv[i]))
+ res = error("'%s' is%s a valid path",
+ argv[i], expect ? " not" : "");
+ else
+ fprintf(stderr,
+ "'%s' is%s a valid path\n",
+ argv[i], expect ? "" : " not");
+
+ return !!res;
+ }
+
fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
argv[1] ? argv[1] : "(there was none)");
return 1;
diff --git a/t/helper/test-run-command.c b/t/helper/test-run-command.c
index 2cc93bb69c..8579b1f7d1 100644
--- a/t/helper/test-run-command.c
+++ b/t/helper/test-run-command.c
@@ -13,8 +13,8 @@
#include "run-command.h"
#include "argv-array.h"
#include "strbuf.h"
-#include <string.h>
-#include <errno.h>
+#include "gettext.h"
+#include "parse-options.h"
static int number_callbacks;
static int parallel_next(struct child_process *cp,
@@ -50,11 +50,145 @@ static int task_finished(int result,
return 1;
}
+static uint64_t my_random_next = 1234;
+
+static uint64_t my_random(void)
+{
+ uint64_t res = my_random_next;
+ my_random_next = my_random_next * 1103515245 + 12345;
+ return res;
+}
+
+static int quote_stress_test(int argc, const char **argv)
+{
+ /*
+ * We are running a quote-stress test.
+ * spawn a subprocess that runs quote-stress with a
+ * special option that echoes back the arguments that
+ * were passed in.
+ */
+ char special[] = ".?*\\^_\"'`{}()[]<>@~&+:;$%"; // \t\r\n\a";
+ int i, j, k, trials = 100, skip = 0, msys2 = 0;
+ struct strbuf out = STRBUF_INIT;
+ struct argv_array args = ARGV_ARRAY_INIT;
+ struct option options[] = {
+ OPT_INTEGER('n', "trials", &trials, "Number of trials"),
+ OPT_INTEGER('s', "skip", &skip, "Skip <n> trials"),
+ OPT_BOOL('m', "msys2", &msys2, "Test quoting for MSYS2's sh"),
+ OPT_END()
+ };
+ const char * const usage[] = {
+ "test-tool run-command quote-stress-test <options>",
+ NULL
+ };
+
+ argc = parse_options(argc, argv, NULL, options, usage, 0);
+
+ setenv("MSYS_NO_PATHCONV", "1", 0);
+
+ for (i = 0; i < trials; i++) {
+ struct child_process cp = CHILD_PROCESS_INIT;
+ size_t arg_count, arg_offset;
+ int ret = 0;
+
+ argv_array_clear(&args);
+ if (msys2)
+ argv_array_pushl(&args, "sh", "-c",
+ "printf %s\\\\0 \"$@\"", "skip", NULL);
+ else
+ argv_array_pushl(&args, "test-tool", "run-command",
+ "quote-echo", NULL);
+ arg_offset = args.argc;
+
+ if (argc > 0) {
+ trials = 1;
+ arg_count = argc;
+ for (j = 0; j < arg_count; j++)
+ argv_array_push(&args, argv[j]);
+ } else {
+ arg_count = 1 + (my_random() % 5);
+ for (j = 0; j < arg_count; j++) {
+ char buf[20];
+ size_t min_len = 1;
+ size_t arg_len = min_len +
+ (my_random() % (ARRAY_SIZE(buf) - min_len));
+
+ for (k = 0; k < arg_len; k++)
+ buf[k] = special[my_random() %
+ ARRAY_SIZE(special)];
+ buf[arg_len] = '\0';
+
+ argv_array_push(&args, buf);
+ }
+ }
+
+ if (i < skip)
+ continue;
+
+ cp.argv = args.argv;
+ strbuf_reset(&out);
+ if (pipe_command(&cp, NULL, 0, &out, 0, NULL, 0) < 0)
+ return error("Failed to spawn child process");
+
+ for (j = 0, k = 0; j < arg_count; j++) {
+ const char *arg = args.argv[j + arg_offset];
+
+ if (strcmp(arg, out.buf + k))
+ ret = error("incorrectly quoted arg: '%s', "
+ "echoed back as '%s'",
+ arg, out.buf + k);
+ k += strlen(out.buf + k) + 1;
+ }
+
+ if (k != out.len)
+ ret = error("got %d bytes, but consumed only %d",
+ (int)out.len, (int)k);
+
+ if (ret) {
+ fprintf(stderr, "Trial #%d failed. Arguments:\n", i);
+ for (j = 0; j < arg_count; j++)
+ fprintf(stderr, "arg #%d: '%s'\n",
+ (int)j, args.argv[j + arg_offset]);
+
+ strbuf_release(&out);
+ argv_array_clear(&args);
+
+ return ret;
+ }
+
+ if (i && (i % 100) == 0)
+ fprintf(stderr, "Trials completed: %d\n", (int)i);
+ }
+
+ strbuf_release(&out);
+ argv_array_clear(&args);
+
+ return 0;
+}
+
+static int quote_echo(int argc, const char **argv)
+{
+ while (argc > 1) {
+ fwrite(argv[1], strlen(argv[1]), 1, stdout);
+ fputc('\0', stdout);
+ argv++;
+ argc--;
+ }
+
+ return 0;
+}
+
int cmd__run_command(int argc, const char **argv)
{
struct child_process proc = CHILD_PROCESS_INIT;
int jobs;
+ if (argc >= 2 && !strcmp(argv[1], "quote-stress-test"))
+ return !!quote_stress_test(argc - 1, argv + 1);
+
+ if (argc >= 2 && !strcmp(argv[1], "quote-echo"))
+ return !!quote_echo(argc - 1, argv + 1);
+
if (argc < 3)
return 1;
while (!strcmp(argv[1], "env")) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 10:39:41 +0000