mirror of
https://github.com/jart/cosmopolitan.git
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f2af97711b
- Improve compatibility with Blink virtual machine - Add non-POSIX APIs for joining threads and signal masks - Never ever use anything except 32-bit integers for atomics - Add some `#undef` statements to workaround `ctags` problems
73 lines
2.9 KiB
C
73 lines
2.9 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 "libc/calls/struct/iovec.h"
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#include "libc/calls/struct/iovec.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/limits.h"
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#include "libc/macros.internal.h"
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#ifdef DescribeIovec
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#undef DescribeIovec
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#endif
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#define N 300
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#define append(...) o += ksnprintf(buf + o, N - o, __VA_ARGS__)
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const char *DescribeIovec(char buf[N], ssize_t rc, const struct iovec *iov,
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int iovlen) {
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const char *d;
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int i, j, o = 0;
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if (!iov) return "NULL";
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if (rc == -1) return "n/a";
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if (rc == -2) rc = SSIZE_MAX;
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if ((!IsAsan() && kisdangerous(iov)) ||
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(IsAsan() && !__asan_is_valid(iov, sizeof(*iov) * iovlen))) {
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ksnprintf(buf, N, "%p", iov);
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return buf;
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}
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append("{");
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for (i = 0; rc && i < iovlen; ++i) {
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if (iov[i].iov_len < rc) {
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j = iov[i].iov_len;
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rc -= iov[i].iov_len;
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} else {
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j = rc;
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rc = 0;
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}
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if (j > 40) {
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j = 40;
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d = "...";
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} else {
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d = "";
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}
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append("%s{%#.*hhs%s, %'zu}", i ? ", " : "", j, iov[i].iov_base, d,
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iov[i].iov_len);
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}
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append("}");
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return buf;
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}
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