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Fix bugs and regressions in the pledge command

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This change gets the pledge (formerly pledge.com) command back in tip
top shape for a 3.0.1 cosmos release. It now runs on all platforms, even
though it's mostly a no-op on ones that lack the kernel security stuff.
The binary footprint is now smaller, since it no longer needs to link
malloc. It's also now able to be built as a fat binary.
This commit is contained in:
Justine Tunney 2023-11-01 06:08:58 -07:00
parent b0e3d89942
commit 7b284f6bda
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GPG key ID: BE714B4575D6E328
18 changed files with 493 additions and 272 deletions
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61
tool/build/verynice.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 2023 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/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "third_party/getopt/getopt.internal.h"
/**
* @fileoverview `verynice foo` launches `foo` as low priority as possible
*
* This is particularly useful on Linux systems with a spinning disk
* where the classic `nice` command doesn't do much.
*/
const char *prog;
static wontreturn void PrintUsage(int rc, int fd) {
tinyprint(fd, "Usage: ", prog, " COMMAND...\n", NULL);
exit(rc);
}
int main(int argc, char *argv[]) {
prog = argv[0];
if (!prog) prog = "verynice";
int opt;
while ((opt = getopt(argc, argv, "h")) != -1) {
switch (opt) {
case 'h':
PrintUsage(0, 1);
default:
PrintUsage(1, 2);
}
}
if (optind == argc) {
tinyprint(2, prog, ": missing command\n", NULL);
exit(1);
}
verynice();
execvp(argv[optind], argv + optind);
perror(argv[optind]);
exit(127);
}