mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
6f7d0cb1c3
This makes breaking changes to add underscores to many non-standard function names provided by the c library. MODE=tiny is now tinier and we now use smaller locks that are better for tiny apps in this mode. Some headers have been renamed to be in the same folder as the build package, so it'll be easier to know which build dependency is needed. Certain old misguided interfaces have been removed. Intel intrinsics headers are now listed in libc/isystem (but not in the amalgamation) to help further improve open source compatibility. Header complexity has also been reduced. Lastly, more shell scripts are now available.
244 lines
8.6 KiB
C
244 lines
8.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "dsp/core/core.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/rlimit.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/fmt/fmt.h"
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#include "libc/intrin/safemacros.internal.h"
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#include "libc/log/check.h"
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#include "libc/math.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/directmap.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/rand.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/sysv/consts/rlimit.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/testlib.h"
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#include "libc/time/time.h"
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#include "libc/x/xsigaction.h"
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#include "libc/x/xspawn.h"
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#define MEM (64 * 1024 * 1024)
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static char tmpname[PATH_MAX];
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void OnSigxcpu(int sig) {
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ASSERT_EQ(SIGXCPU, sig);
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_exit(0);
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}
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void OnSigxfsz(int sig) {
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unlink(tmpname);
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ASSERT_EQ(SIGXFSZ, sig);
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_exit(0);
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}
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TEST(setrlimit, testCpuLimit) {
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char *p;
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int i, wstatus;
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long double start;
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struct rlimit rlim;
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double matrices[3][3][3];
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if (IsWindows()) return; /* of course it doesn't work on windows */
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if (IsOpenbsd()) return; /* TODO(jart): fix flake */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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CHECK_EQ(0, xsigaction(SIGXCPU, OnSigxcpu, 0, 0, 0));
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ASSERT_EQ(0, getrlimit(RLIMIT_CPU, &rlim));
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rlim.rlim_cur = 1; /* set soft limit to one second */
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ASSERT_EQ(0, setrlimit(RLIMIT_CPU, &rlim));
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start = nowl();
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do {
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matmul3(matrices[0], matrices[1], matrices[2]);
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matmul3(matrices[0], matrices[1], matrices[2]);
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matmul3(matrices[0], matrices[1], matrices[2]);
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matmul3(matrices[0], matrices[1], matrices[2]);
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} while ((nowl() - start) < 5);
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_exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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TEST(setrlimit, testFileSizeLimit) {
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char *p;
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char junkdata[512];
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int i, fd, wstatus;
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struct rlimit rlim;
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if (IsWindows()) return; /* of course it doesn't work on windows */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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CHECK_EQ(0, xsigaction(SIGXFSZ, OnSigxfsz, 0, 0, 0));
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ASSERT_EQ(0, getrlimit(RLIMIT_FSIZE, &rlim));
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rlim.rlim_cur = 1024 * 1024; /* set soft limit to one megabyte */
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ASSERT_EQ(0, setrlimit(RLIMIT_FSIZE, &rlim));
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snprintf(tmpname, sizeof(tmpname), "%s/%s.%d",
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firstnonnull(getenv("TMPDIR"), "/tmp"),
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firstnonnull(program_invocation_short_name, "unknown"), getpid());
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ASSERT_NE(-1, (fd = open(tmpname, O_RDWR | O_CREAT | O_TRUNC, 0644)));
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rngset(junkdata, 512, rand64, -1);
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for (i = 0; i < 5 * 1024 * 1024 / 512; ++i) {
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ASSERT_EQ(512, write(fd, junkdata, 512));
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}
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close(fd);
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unlink(tmpname);
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_exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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int SetKernelEnforcedMemoryLimit(size_t n) {
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struct rlimit rlim;
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getrlimit(RLIMIT_AS, &rlim);
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rlim.rlim_cur = n;
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return setrlimit(RLIMIT_AS, &rlim);
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}
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TEST(setrlimit, testMemoryLimit) {
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char *p;
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bool gotsome;
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int i, wstatus;
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if (IsAsan()) return; /* b/c we use sys_mmap */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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ASSERT_EQ(0, SetKernelEnforcedMemoryLimit(MEM));
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for (gotsome = i = 0; i < (MEM * 2) / PAGESIZE; ++i) {
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p = mmap(0, PAGESIZE, PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1, 0);
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if (p != MAP_FAILED) {
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gotsome = true;
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} else {
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if (!IsNetbsd()) {
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// TODO(jart): what's going on with NetBSD?
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ASSERT_TRUE(gotsome);
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}
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ASSERT_EQ(ENOMEM, errno);
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_exit(0);
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}
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rngset(p, PAGESIZE, rand64, -1);
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}
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_exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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TEST(setrlimit, testVirtualMemoryLimit) {
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char *p;
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int i, wstatus;
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if (IsAsan()) return;
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if (IsXnu()) return; /* doesn't work on darwin */
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if (IsOpenbsd()) return; /* unavailable on openbsd */
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if (IsWindows()) return; /* of course it doesn't work on windows */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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ASSERT_EQ(0, setrlimit(RLIMIT_AS, &(struct rlimit){MEM, MEM}));
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for (i = 0; i < (MEM * 2) / PAGESIZE; ++i) {
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p = sys_mmap(0, PAGESIZE, PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1, 0)
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.addr;
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if (p == MAP_FAILED) {
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ASSERT_EQ(ENOMEM, errno);
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_exit(0);
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}
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rngset(p, PAGESIZE, rand64, -1);
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}
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_exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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TEST(setrlimit, testDataMemoryLimit) {
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char *p;
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int i, wstatus;
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if (IsAsan()) return;
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if (IsXnu()) return; /* doesn't work on darwin */
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if (IsNetbsd()) return; /* doesn't work on netbsd */
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if (IsFreebsd()) return; /* doesn't work on freebsd */
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if (IsLinux()) return; /* doesn't work on gnu/systemd */
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if (IsWindows()) return; /* of course it doesn't work on windows */
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ASSERT_NE(-1, (wstatus = xspawn(0)));
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if (wstatus == -2) {
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ASSERT_EQ(0, setrlimit(RLIMIT_DATA, &(struct rlimit){MEM, MEM}));
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for (i = 0; i < (MEM * 2) / PAGESIZE; ++i) {
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p = sys_mmap(0, PAGESIZE, PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1, 0)
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.addr;
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if (p == MAP_FAILED) {
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ASSERT_EQ(ENOMEM, errno);
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_exit(0);
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}
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rngset(p, PAGESIZE, rand64, -1);
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}
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_exit(1);
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}
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EXPECT_TRUE(WIFEXITED(wstatus));
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EXPECT_FALSE(WIFSIGNALED(wstatus));
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EXPECT_EQ(0, WEXITSTATUS(wstatus));
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EXPECT_EQ(0, WTERMSIG(wstatus));
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}
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TEST(setrlimit, testPhysicalMemoryLimit) {
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/* RLIMIT_RSS doesn't work on gnu/systemd */
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/* RLIMIT_RSS doesn't work on darwin */
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/* RLIMIT_RSS doesn't work on freebsd */
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/* RLIMIT_RSS doesn't work on netbsd */
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/* RLIMIT_RSS doesn't work on openbsd */
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/* of course it doesn't work on windows */
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}
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wontreturn void OnVfork(void *ctx) {
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struct rlimit *rlim;
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rlim = ctx;
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rlim->rlim_cur -= 1;
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ASSERT_EQ(0, getrlimit(RLIMIT_CPU, rlim));
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_exit(0);
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}
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TEST(setrlimit, isVforkSafe) {
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int pid, ws;
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struct rlimit rlim[2];
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if (IsWindows()) return; /* of course it doesn't work on windows */
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ASSERT_EQ(0, getrlimit(RLIMIT_CPU, rlim));
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ASSERT_NE(-1, (ws = xvspawn(OnVfork, rlim, 0)));
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EXPECT_TRUE(WIFEXITED(ws));
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EXPECT_FALSE(WIFSIGNALED(ws));
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EXPECT_EQ(0, WEXITSTATUS(ws));
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EXPECT_EQ(0, WTERMSIG(ws));
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ASSERT_EQ(0, getrlimit(RLIMIT_CPU, rlim + 1));
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EXPECT_EQ(rlim[0].rlim_cur, rlim[1].rlim_cur);
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EXPECT_EQ(rlim[0].rlim_max, rlim[1].rlim_max);
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}
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