mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
18bb5888e1
- Remove PAGESIZE constant
- Fix realloc() documentation
- Fix ttyname_r() error reporting
- Make forking more reliable on Windows
- Make execvp() a few microseconds faster
- Make system() a few microseconds faster
- Tighten up the socket-related magic numbers
- Loosen restrictions on mmap() offset alignment
- Improve GetProgramExecutableName() with getenv("_")
- Use mkstemp() as basis for mktemp(), tmpfile(), tmpfd()
- Fix flakes in pthread_cancel_test, unix_test, fork_test
- Fix recently introduced futex stack overflow regression
- Let sockets be passed as stdio to subprocesses on Windows
- Improve security of bind() on Windows w/ SO_EXCLUSIVEADDRUSE
78 lines
3.2 KiB
C
78 lines
3.2 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/calls/calls.h"
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#include "libc/dce.h"
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#include "libc/macros.internal.h"
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#include "libc/nt/systeminfo.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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/**
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* RII constant holding temporary file directory.
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*
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* The order of precedence is:
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*
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* - $TMPDIR/
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* - GetTempPath()
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* - /tmp/
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*
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* This guarantees trailing slash.
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* We also guarantee `kTmpPath` won't be longer than `PATH_MAX / 2`.
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*/
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char kTmpPath[PATH_MAX];
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static inline int IsAlpha(int c) {
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return ('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z');
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}
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__attribute__((__constructor__)) static void kTmpPathInit(void) {
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int i;
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char *s;
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uint32_t n;
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char16_t path16[PATH_MAX];
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if ((s = getenv("TMPDIR")) && (n = strlen(s)) < PATH_MAX / 2) {
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if (n) memcpy(kTmpPath, s, n);
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if (n && kTmpPath[n - 1] != '/') {
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kTmpPath[n + 0] = '/';
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kTmpPath[n + 1] = 0;
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}
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return;
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}
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if (IsWindows() &&
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((n = GetTempPath(ARRAYLEN(path16), path16)) && n < ARRAYLEN(path16))) {
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// turn c:\foo\bar\ into c:/foo/bar/
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for (i = 0; i < n; ++i) {
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if (path16[i] == '\\') {
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path16[i] = '/';
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}
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}
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// turn c:/... into /c/...
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if (IsAlpha(path16[0]) && path16[1] == ':' && path16[2] == '/') {
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path16[1] = path16[0];
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path16[0] = '/';
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path16[2] = '/';
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}
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tprecode16to8(kTmpPath, sizeof(kTmpPath), path16);
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return;
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}
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strcpy(kTmpPath, "/tmp/");
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}
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