mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
5e8ae2d5bc
Continuous Integration (via runit and runitd) is now re-enabled on win7 and win10. The `make test` command, which runs the tests on all systems is now the fastest and most stable it's been since the project started. UBSAN is now enabled in MODE=dbg in addition to ASAN. Many instances of undefined behavior have been removed. Mostly things like passing a NULL argument to memcpy(), which works fine with Cosmopolitan Libc, but that doesn't prevents the compiler from being unhappy. There was an issue w/ GNU make where static analysis claims a sprintf() call can overflow. We also now have nicer looking crash reports on Windows since uname should now be supported and msys64 addr2line works reliably.
89 lines
4 KiB
C
89 lines
4 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 2020 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/calls/internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/calls/struct/utsname.h"
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#include "libc/dce.h"
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#include "libc/fmt/itoa.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/nt/enum/computernameformat.h"
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#include "libc/nt/struct/teb.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/errfuns.h"
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static inline textwindows noasan int NtGetMajorVersion(void) {
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return NtGetPeb()->OSMajorVersion;
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}
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static inline textwindows noasan int NtGetMinorVersion(void) {
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return NtGetPeb()->OSMinorVersion;
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}
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static inline textwindows noasan int NtGetBuildNumber(void) {
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return NtGetPeb()->OSBuildNumber;
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}
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/**
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* Asks kernel to give us the `uname -a` data.
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* @return 0 on success, or -1 w/ errno
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*/
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int uname(struct utsname *lool) {
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int rc, v;
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char *out, *p;
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size_t i, j, len;
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char tmp[sizeof(struct utsname)];
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if (!lool) return efault();
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if (!lool || (IsAsan() && !__asan_is_valid(lool, sizeof(*lool)))) {
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rc = efault();
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} else {
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bzero(tmp, sizeof(tmp));
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if (!IsWindows()) {
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if ((rc = sys_uname(tmp)) != -1) {
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out = (char *)lool;
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for (i = j = 0;;) {
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len = strlen(&tmp[j]);
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if (len >= sizeof(struct utsname) - i) break;
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memcpy(&out[i], &tmp[j], len + 1);
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i += SYS_NMLN;
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j += len;
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while (j < sizeof(tmp) && tmp[j] == '\0') ++j;
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if (j == sizeof(tmp)) break;
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}
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}
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} else {
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v = NtGetVersion();
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p = lool->version;
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p = FormatUint32(p, NtGetMajorVersion()), *p++ = '.';
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p = FormatUint32(p, NtGetMinorVersion()), *p++ = '-';
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p = FormatUint32(p, NtGetBuildNumber());
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strcpy(lool->sysname, "The New Technology");
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strcpy(lool->machine, "x86_64");
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rc = gethostname_nt(lool->nodename, sizeof(lool->nodename),
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kNtComputerNamePhysicalDnsHostname);
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rc |= gethostname_nt(lool->domainname, sizeof(lool->domainname),
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kNtComputerNamePhysicalDnsDomain);
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}
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}
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STRACE("uname([%s, %s, %s, %s, %s, %s]) → %d% m", lool->sysname,
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lool->nodename, lool->release, lool->version, lool->machine,
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lool->domainname, rc);
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return rc;
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}
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