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cosmopolitan/test/libc/stdio/dirstream_test.c
Justine Tunney b0df6c1fce
Implement proper time zone support 
Cosmopolitan now supports 104 time zones. They're embedded inside any
binary that links the localtime() function. Doing so adds about 100kb
to the binary size. This change also gets time zones working properly
on Windows for the first time. It's not needed to have /etc/localtime
exist on Windows, since we can get this information from WIN32. We're
also now updated to the latest version of Paul Eggert's TZ library.
2024-05-04 23:06:37 -07:00

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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/struct/dirent.h"
#include "libc/calls/struct/stat.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/fmt/conv.h"
#include "libc/fmt/itoa.h"
#include "libc/intrin/kprintf.h"
#include "libc/limits.h"
#include "libc/mem/critbit0.h"
#include "libc/mem/gc.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/append.h"
#include "libc/stdio/ftw.h"
#include "libc/stdio/rand.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/dt.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/s.h"
#include "libc/testlib/testlib.h"
#include "libc/x/xasprintf.h"
__static_yoink("zipos");
__static_yoink("usr/share/zoneinfo/");
__static_yoink("usr/share/zoneinfo/GMT");
__static_yoink("libc/testlib/hyperion.txt");
__static_yoink("libc/testlib/moby.txt");
void SetUpOnce(void) {
testlib_enable_tmp_setup_teardown();
}
DIR *dir;
struct dirent *ent;
void SetUp(void) {
dir = 0;
ent = 0;
}
TEST(opendir, efault) {
ASSERT_SYS(EFAULT, NULL, opendir(0));
if (!IsAsan())
return; // not possible
ASSERT_SYS(EFAULT, NULL, opendir((void *)77));
}
TEST(opendir, enoent) {
ASSERT_SYS(ENOENT, NULL, opendir(""));
ASSERT_SYS(ENOENT, NULL, opendir("o/foo"));
}
TEST(opendir, enotdir) {
ASSERT_SYS(0, 0, close(creat("yo", 0644)));
ASSERT_SYS(ENOTDIR, NULL, opendir("yo/there"));
}
TEST(opendir, openSyntheticDirEntry) {
struct stat st;
ASSERT_SYS(0, 3, open("/zip", O_RDONLY | O_DIRECTORY));
ASSERT_SYS(0, 0, fstat(3, &st));
ASSERT_TRUE(S_ISDIR(st.st_mode));
EXPECT_SYS(EISDIR, -1, read(3, 0, 0));
ASSERT_NE(NULL, (dir = fdopendir(3)));
EXPECT_NE(NULL, (ent = readdir(dir)));
EXPECT_EQ(0, closedir(dir));
}
TEST(opendir, openRealDirEntry) {
struct stat st;
ASSERT_SYS(0, 3, open("/zip/usr/share/zoneinfo", O_RDONLY | O_DIRECTORY));
ASSERT_SYS(0, 0, fstat(3, &st));
ASSERT_TRUE(S_ISDIR(st.st_mode));
EXPECT_SYS(EISDIR, -1, read(3, 0, 0));
ASSERT_NE(NULL, (dir = fdopendir(3)));
EXPECT_NE(NULL, (ent = readdir(dir)));
EXPECT_EQ(0, closedir(dir));
}
TEST(fdopendir, test) {
ASSERT_SYS(0, 0, touch("foo", 0644));
ASSERT_SYS(0, 3, open("foo", O_RDONLY));
ASSERT_SYS(ENOTDIR, 0, fdopendir(3));
ASSERT_SYS(0, 0, close(3));
}
TEST(dirstream, testDots) {
int hasdot = 0;
int hasdotdot = 0;
ASSERT_SYS(0, 0, close(creat("foo", 0644)));
ASSERT_NE(NULL, (dir = opendir(".")));
while ((ent = readdir(dir))) {
if (!strcmp(ent->d_name, ".")) {
++hasdot;
EXPECT_EQ(DT_DIR, ent->d_type);
}
if (!strcmp(ent->d_name, "..")) {
++hasdotdot;
EXPECT_EQ(DT_DIR, ent->d_type);
}
}
EXPECT_EQ(1, hasdot);
EXPECT_EQ(1, hasdotdot);
EXPECT_SYS(0, 0, closedir(dir));
}
TEST(dirstream, test) {
bool hasfoo = false;
bool hasbar = false;
char *dpath, *file1, *file2;
dpath = gc(xasprintf("%s.%d", "dirstream", rand()));
file1 = gc(xasprintf("%s/%s", dpath, "foo"));
file2 = gc(xasprintf("%s/%s", dpath, "bar"));
EXPECT_NE(-1, mkdir(dpath, 0755));
EXPECT_NE(-1, touch(file1, 0644));
EXPECT_NE(-1, touch(file2, 0644));
EXPECT_TRUE(NULL != (dir = opendir(dpath)));
while ((ent = readdir(dir))) {
if (!strcmp(ent->d_name, "foo")) {
EXPECT_EQ(DT_REG, ent->d_type);
hasfoo = true;
}
if (!strcmp(ent->d_name, "bar")) {
EXPECT_EQ(DT_REG, ent->d_type);
hasbar = true;
}
}
EXPECT_TRUE(hasfoo);
EXPECT_TRUE(hasbar);
EXPECT_NE(-1, closedir(dir));
EXPECT_NE(-1, unlink(file2));
EXPECT_NE(-1, unlink(file1));
EXPECT_NE(-1, rmdir(dpath));
}
TEST(dirstream, zipTest) {
bool foundNewYork = false;
const char *path = "/zip/usr/share/zoneinfo/";
ASSERT_NE(NULL, (dir = opendir(path)));
while ((ent = readdir(dir))) {
foundNewYork |= !strcmp(ent->d_name, "GMT");
}
EXPECT_SYS(0, 0, closedir(dir));
EXPECT_TRUE(foundNewYork);
}
TEST(rewinddir, test) {
bool hasfoo = false;
bool hasbar = false;
char *dpath, *file1, *file2;
dpath = gc(xasprintf("%s.%d", "dirstream", rand()));
file1 = gc(xasprintf("%s/%s", dpath, "foo"));
file2 = gc(xasprintf("%s/%s", dpath, "bar"));
EXPECT_NE(-1, mkdir(dpath, 0755));
EXPECT_NE(-1, touch(file1, 0644));
EXPECT_NE(-1, touch(file2, 0644));
EXPECT_TRUE(NULL != (dir = opendir(dpath)));
readdir(dir);
readdir(dir);
readdir(dir);
rewinddir(dir);
while ((ent = readdir(dir))) {
if (strcmp(ent->d_name, "foo"))
hasfoo = true;
if (strcmp(ent->d_name, "bar"))
hasbar = true;
}
EXPECT_TRUE(hasfoo);
EXPECT_TRUE(hasbar);
EXPECT_NE(-1, closedir(dir));
EXPECT_NE(-1, unlink(file2));
EXPECT_NE(-1, unlink(file1));
EXPECT_NE(-1, rmdir(dpath));
}
TEST(dirstream, zipTest_notDir) {
ASSERT_EQ(NULL, opendir("/zip/usr/share/zoneinfo/GMT"));
ASSERT_EQ(ENOTDIR, errno);
}
TEST(dirstream, ino) {
ASSERT_SYS(0, 0, mkdir("boop", 0755));
EXPECT_SYS(0, 0, touch("boop/a", 0644));
EXPECT_SYS(0, 0, touch("boop/b", 0644));
EXPECT_SYS(0, 0, touch("boop/c", 0644));
ASSERT_NE(NULL, (dir = opendir("boop")));
ASSERT_NE(NULL, (ent = readdir(dir))); // #1
ASSERT_NE(NULL, (ent = readdir(dir))); // #2
long pos = telldir(dir);
ASSERT_NE(NULL, (ent = readdir(dir))); // #3
char name[32];
strlcpy(name, ent->d_name, sizeof(name));
ASSERT_NE(NULL, (ent = readdir(dir))); // #4
ASSERT_NE(NULL, (ent = readdir(dir))); // #5
ASSERT_EQ(NULL, (ent = readdir(dir))); // eod
seekdir(dir, pos);
ASSERT_NE(NULL, (ent = readdir(dir))); // #2
ASSERT_STREQ(name, ent->d_name);
ASSERT_NE(NULL, (ent = readdir(dir))); // #3
ASSERT_NE(NULL, (ent = readdir(dir))); // #4
ASSERT_EQ(NULL, (ent = readdir(dir))); // eod
ASSERT_EQ(NULL, (ent = readdir(dir))); // eod
ASSERT_SYS(0, 0, closedir(dir));
}
TEST(dirstream, seek) {
ASSERT_SYS(0, 0, mkdir("boop", 0755));
EXPECT_SYS(0, 0, touch("boop/a", 0644));
EXPECT_SYS(0, 0, touch("boop/b", 0644));
EXPECT_SYS(0, 0, touch("boop/c", 0644));
ASSERT_NE(NULL, (dir = opendir("boop")));
ASSERT_NE(NULL, (ent = readdir(dir))); // #1
ASSERT_NE(NULL, (ent = readdir(dir))); // #2
long pos = telldir(dir);
ASSERT_NE(NULL, (ent = readdir(dir))); // #3
char name[32];
strlcpy(name, ent->d_name, sizeof(name));
ASSERT_NE(NULL, (ent = readdir(dir))); // #4
ASSERT_NE(NULL, (ent = readdir(dir))); // #5
ASSERT_EQ(NULL, (ent = readdir(dir))); // eod
seekdir(dir, pos);
ASSERT_NE(NULL, (ent = readdir(dir))); // #2
ASSERT_STREQ(name, ent->d_name);
ASSERT_NE(NULL, (ent = readdir(dir))); // #3
ASSERT_NE(NULL, (ent = readdir(dir))); // #4
ASSERT_EQ(NULL, (ent = readdir(dir))); // eod
ASSERT_EQ(NULL, (ent = readdir(dir))); // eod
ASSERT_SYS(0, 0, closedir(dir));
}
TEST(dirstream, seeky) {
char name[256];
char path[512];
struct stat golden;
int i, j, n = 1000;
int goodindex = 500;
struct critbit0 tree = {0};
ASSERT_SYS(0, 0, mkdir("boop", 0755));
ASSERT_EQ(1, critbit0_insert(&tree, "."));
ASSERT_EQ(1, critbit0_insert(&tree, ".."));
for (i = 0; i < n; ++i) {
for (j = 0; j < 255; ++j) {
name[j] = '0' + rand() % 10;
}
// TODO(jart): why does Windows croak with 255
name[100] = 0;
strcpy(path, "boop/");
strcat(path, name);
path[255] = 0;
*FormatInt32(path + 5, i) = '-';
ASSERT_EQ(1, critbit0_insert(&tree, path + 5));
ASSERT_SYS(0, 0, touch(path, 0644));
if (i == goodindex) {
ASSERT_SYS(0, 0, stat(path, &golden));
}
}
// do a full pass
{
ASSERT_NE(NULL, (dir = opendir("boop")));
long tell = -1;
long prev = telldir(dir);
while ((ent = readdir(dir))) {
if (atoi(ent->d_name) == goodindex) {
ASSERT_EQ(golden.st_ino, ent->d_ino);
tell = prev;
}
prev = telldir(dir);
ASSERT_EQ(1, critbit0_delete(&tree, ent->d_name));
}
ASSERT_EQ(NULL, tree.root); // all entries were found
ASSERT_NE(-1, tell);
seekdir(dir, tell);
ASSERT_NE(NULL, (ent = readdir(dir)));
ASSERT_EQ(goodindex, atoi(ent->d_name));
ASSERT_EQ(golden.st_ino, ent->d_ino);
ASSERT_SYS(0, 0, closedir(dir));
}
// do a partial pass, and seek midway
{
ASSERT_NE(NULL, (dir = opendir("boop")));
int abort = 700;
long tell = -1;
bool foundit = false;
long prev = telldir(dir);
while ((ent = readdir(dir))) {
if (atoi(ent->d_name) == goodindex) {
ASSERT_EQ(golden.st_ino, ent->d_ino);
tell = prev;
foundit = true;
}
prev = telldir(dir);
if (--abort <= 0 && foundit) {
break;
}
}
ASSERT_NE(-1, tell);
seekdir(dir, tell);
ASSERT_NE(NULL, (ent = readdir(dir)));
ASSERT_EQ(goodindex, atoi(ent->d_name));
ASSERT_EQ(golden.st_ino, ent->d_ino);
ASSERT_SYS(0, 0, closedir(dir));
}
}
TEST(dirstream, dots) {
bool got_dot = false;
bool got_dot_dot = false;
ASSERT_NE(NULL, (dir = opendir(".")));
while ((ent = readdir(dir))) {
got_dot |= !strcmp(ent->d_name, ".");
got_dot_dot |= !strcmp(ent->d_name, "..");
}
ASSERT_SYS(0, 0, closedir(dir));
ASSERT_TRUE(got_dot_dot);
ASSERT_TRUE(got_dot);
}
TEST(dirstream, inoFile_isConsistentWithStat) {
struct stat st;
bool gotsome = false;
EXPECT_SYS(0, 0, touch("foo", 0644));
EXPECT_SYS(0, 0, stat("foo", &st));
ASSERT_NE(NULL, (dir = opendir(".")));
while ((ent = readdir(dir))) {
if (!strcmp(ent->d_name, "foo")) {
ASSERT_EQ(st.st_ino, ent->d_ino);
gotsome = true;
}
}
ASSERT_SYS(0, 0, closedir(dir));
ASSERT_TRUE(gotsome);
}
TEST(dirstream_zipos, inoFile_isConsistentWithStat) {
struct stat st;
const char *dirpath;
char filename[PATH_MAX];
dirpath = "/zip/usr/share/zoneinfo";
ASSERT_NE(NULL, (dir = opendir(dirpath)));
while ((ent = readdir(dir))) {
snprintf(filename, sizeof(filename), "%s/%s", dirpath, ent->d_name);
EXPECT_SYS(0, 0, stat(filename, &st));
ASSERT_EQ(st.st_ino, ent->d_ino);
}
ASSERT_SYS(0, 0, closedir(dir));
}
static const char *DescribeDt(int dt) {
static char buf[12];
switch (dt) {
case DT_UNKNOWN:
return "DT_UNKNOWN";
case DT_FIFO:
return "DT_FIFO";
case DT_CHR:
return "DT_CHR";
case DT_DIR:
return "DT_DIR";
case DT_BLK:
return "DT_BLK";
case DT_REG:
return "DT_REG";
case DT_LNK:
return "DT_LNK";
case DT_SOCK:
return "DT_SOCK";
default:
FormatInt32(buf, dt);
return buf;
}
}
static const char *DescribeFtw(int dt) {
static char buf[12];
switch (dt) {
case FTW_F:
return "FTW_F";
case FTW_D:
return "FTW_D";
case FTW_DNR:
return "FTW_DNR";
case FTW_NS:
return "FTW_NS";
case FTW_SL:
return "FTW_SL";
case FTW_DP:
return "FTW_DP";
case FTW_SLN:
return "FTW_SLN";
default:
FormatInt32(buf, dt);
return buf;
}
}
char *b;
static int walk(const char *fpath, //
const struct stat *st, //
int typeflag, //
struct FTW *ftwbuf) { //
appendf(&b, "%-6s %s\n", DescribeFtw(typeflag), fpath);
return 0;
}
TEST(dirstream, walk) {
ASSERT_SYS(0, 0, nftw("/zip", walk, 128, FTW_PHYS | FTW_DEPTH));
ASSERT_STREQ("FTW_F /zip/echo\n"
"FTW_F /zip/libc/testlib/hyperion.txt\n"
"FTW_F /zip/libc/testlib/moby.txt\n"
"FTW_DP /zip/libc/testlib\n"
"FTW_DP /zip/libc\n"
"FTW_F /zip/usr/share/zoneinfo/GMT\n"
"FTW_DP /zip/usr/share/zoneinfo\n"
"FTW_DP /zip/usr/share\n"
"FTW_DP /zip/usr\n"
"FTW_F /zip/.cosmo\n"
"FTW_DP /zip\n",
b);
free(b);
b = 0;
}
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