mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-15 02:37:55 +00:00
ae5d06dc53
- 10.5% reduction of o//depend dependency graph
- 8.8% reduction in latency of make command
- Fix issue with temporary file cleanup
There's a new -w option in compile.com that turns off the recent
Landlock output path workaround for "good commands" which do not
unlink() the output file like GNU tooling does.
Our new GNU Make unveil sandboxing appears to have zero overhead
in the grand scheme of things. Full builds are pretty fast since
the only thing that's actually slowed us down is probably libcxx
make -j16 MODE=rel
RL: took 85,732,063µs wall time
RL: ballooned to 323,612kb in size
RL: needed 828,560,521µs cpu (11% kernel)
RL: caused 39,080,670 page faults (99% memcpy)
RL: 350,073 context switches (72% consensual)
RL: performed 0 reads and 11,494,960 write i/o operations
pledge() and unveil() no longer consider ENOSYS to be an error.
These functions have also been added to Python's cosmo module.
This change also removes some WIN32 APIs and System Five magnums
which we're not using and it's doubtful anyone else would be too
124 lines
4.3 KiB
C
124 lines
4.3 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 2022 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 "libc/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/errno.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/gc.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/x/x.h"
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#include "tool/args/args.h"
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STATIC_YOINK("zip_uri_support");
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static struct ZipArgs {
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bool initialized;
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bool loaded;
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int oldargc;
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char *data;
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char **args;
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char **oldargv;
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} g_zipargs;
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static void AddZipArg(int *argc, char ***argv, char *arg) {
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*argv = xrealloc(*argv, (++(*argc) + 1) * sizeof(*(*argv)));
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(*argv)[*argc - 1] = arg;
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(*argv)[*argc - 0] = 0;
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}
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void FreeZipArgs(void) {
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if (g_zipargs.loaded) {
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free(g_zipargs.data);
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free(g_zipargs.args);
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__argc = g_zipargs.oldargc;
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__argv = g_zipargs.oldargv;
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g_zipargs.loaded = false;
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}
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}
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int LoadZipArgsImpl(int *argc, char ***argv, char *data) {
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int i, n, fd;
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bool founddots;
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char *arg, **args, *state, *start;
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assert(!g_zipargs.loaded);
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if (_chomp(data)) {
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n = 0;
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args = 0;
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start = data;
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founddots = false;
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AddZipArg(&n, &args, (*argv)[0]);
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while ((arg = strtok_r(start, "\r\n", &state))) {
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if (!strcmp(arg, "...")) {
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founddots = true;
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for (i = 1; i < *argc; ++i) {
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AddZipArg(&n, &args, (*argv)[i]);
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}
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} else {
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AddZipArg(&n, &args, arg);
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}
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start = 0;
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}
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if (founddots || *argc <= 1) {
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if (!g_zipargs.initialized) {
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atexit(FreeZipArgs);
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g_zipargs.oldargc = __argc;
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g_zipargs.oldargv = __argv;
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g_zipargs.initialized = true;
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}
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g_zipargs.loaded = true;
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g_zipargs.data = data;
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g_zipargs.args = args;
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*argc = n;
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*argv = args;
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__argc = n;
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__argv = args;
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} else {
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free(data);
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free(args);
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}
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}
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return 0;
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}
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/**
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* Replaces argument list with `/zip/.args` contents if it exists.
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*
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* Your `.args` file should have one argument per line.
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*
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* If the special argument `...` is *not* encountered, then the
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* replacement will only happen if *no* CLI args are specified.
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*
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* If the special argument `...` *is* encountered, then it'll be
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* replaced with whatever CLI args were specified by the user.
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*
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* @return 0 on success, or -1 if not found w/o errno clobber
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*/
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int LoadZipArgs(int *argc, char ***argv) {
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int e;
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char *p;
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e = errno;
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if ((p = xslurp("/zip/.args", 0))) {
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return LoadZipArgsImpl(argc, argv, p);
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} else {
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errno = e;
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return -1;
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}
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}
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