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Greatly expand system() shell code features

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The cosmopolitan command interpreter now has 13 builtin commands,
variable support, support for ; / && / || syntax, asynchronous support,
and plenty of unit tests with bug fixes.

This change fixes a bug in posix_spawn() with null envp arg. strace
logging now uses atomic writes for scatter functions. Breaking change
renaming GetCpuCount() to _getcpucount(). TurfWar is now updated to use
the new token bucket algorithm. WIN32 affinity masks now inherit across
fork() and execve().
This commit is contained in:
Justine Tunney 2022-10-11 21:06:27 -07:00
parent e7329b7cba
commit b41f91c658
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GPG key ID: BE714B4575D6E328
80 changed files with 1370 additions and 344 deletions
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test/libc/stdio/popen_test.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 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/sigaction.h"
#include "libc/dce.h"
#include "libc/fmt/fmt.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/sig.h"
#include "libc/testlib/testlib.h"
FILE *f;
char buf[32];
char testlib_enable_tmp_setup_teardown;
TEST(popen, command) {
char foo[6];
testlib_extract("/zip/echo.com", "echo.com", 0755);
ASSERT_NE(NULL, (f = popen("./echo.com hello", "r")));
ASSERT_NE(NULL, fgets(foo, sizeof(foo), f));
ASSERT_STREQ("hello", foo);
ASSERT_EQ(0, pclose(f));
}
TEST(popen, semicolon) {
ASSERT_NE(NULL, (f = popen("echo hello;echo there", "r")));
ASSERT_STREQ("hello\n", fgets(buf, sizeof(buf), f));
ASSERT_STREQ("there\n", fgets(buf, sizeof(buf), f));
ASSERT_EQ(0, pclose(f));
}
TEST(popen, singleQuotes) {
setenv("there", "a b c", true);
ASSERT_NE(NULL, (f = popen("echo -l 'hello $there' yo", "r")));
ASSERT_STREQ("hello $there\n", fgets(buf, sizeof(buf), f));
ASSERT_STREQ("yo\n", fgets(buf, sizeof(buf), f));
ASSERT_EQ(0, pclose(f));
}
TEST(popen, doubleQuotes) {
setenv("hello", "a b c", true);
ASSERT_NE(NULL, (f = popen("echo -l \"$hello there\"", "r")));
ASSERT_STREQ("a b c there\n", fgets(buf, sizeof(buf), f));
ASSERT_EQ(0, pclose(f));
}
TEST(popen, quoteless) {
setenv("there", "a b c", true);
ASSERT_NE(NULL, (f = popen("echo -l hello a$there yo", "r")));
ASSERT_STREQ("hello\n", fgets(buf, sizeof(buf), f));
ASSERT_STREQ("aa b c\n", fgets(buf, sizeof(buf), f)); // mixed feelings
ASSERT_STREQ("yo\n", fgets(buf, sizeof(buf), f));
ASSERT_EQ(0, pclose(f));
}
TEST(popen, pipe) {
setenv("there", "a b c", true);
ASSERT_NE(NULL, (f = popen("echo hello | toupper", "r")));
ASSERT_STREQ("HELLO\n", fgets(buf, sizeof(buf), f));
ASSERT_EQ(0, pclose(f));
}
sig_atomic_t gotsig;
void OnSig(int sig) {
gotsig = 1;
}
TEST(popen, complicated) {
if (IsWindows()) return; // windows treats sigusr1 as terminate
char cmd[64];
signal(SIGUSR1, OnSig);
sprintf(cmd, "read a ; test \"x$a\" = xhello && kill -USR1 %d", getpid());
ASSERT_NE(NULL, (f = popen(cmd, "w")));
ASSERT_GE(fputs("hello", f), 0);
ASSERT_EQ(0, pclose(f));
ASSERT_EQ(1, gotsig);
signal(SIGUSR1, SIG_DFL);
}