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Restart CI for New Technology and UBSAN hunting

Browse source 
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.
This commit is contained in:
Justine Tunney 2022-03-21 03:46:16 -07:00
parent d5ff2c3fb9
commit 5e8ae2d5bc
80 changed files with 506 additions and 249 deletions
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74
libc/calls/uname.c
View file

@ -18,34 +18,72 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/calls/struct/utsname.h"
#include "libc/dce.h"
#include "libc/fmt/itoa.h"
#include "libc/intrin/asan.internal.h"
#include "libc/nt/enum/computernameformat.h"
#include "libc/nt/struct/teb.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/sysv/errfuns.h"
static inline textwindows noasan int NtGetMajorVersion(void) {
return NtGetPeb()->OSMajorVersion;
}
static inline textwindows noasan int NtGetMinorVersion(void) {
return NtGetPeb()->OSMinorVersion;
}
static inline textwindows noasan int NtGetBuildNumber(void) {
return NtGetPeb()->OSBuildNumber;
}
/**
* Asks kernel to give us the `uname -a` data.
* @return 0 on success, or -1 w/ errno
*/
int uname(struct utsname *lool) {
char *out;
int rc, v;
char *out, *p;
size_t i, j, len;
char tmp[sizeof(struct utsname)];
bzero(tmp, sizeof(tmp));
if (sys_uname(tmp) != -1) {
out = (char *)lool;
i = 0;
j = 0;
for (;;) {
len = strlen(&tmp[j]);
if (len >= sizeof(struct utsname) - i) break;
memcpy(&out[i], &tmp[j], len + 1);
i += SYS_NMLN;
j += len;
while (j < sizeof(tmp) && tmp[j] == '\0') ++j;
if (j == sizeof(tmp)) break;
}
return 0;
if (!lool) return efault();
if (!lool || (IsAsan() && !__asan_is_valid(lool, sizeof(*lool)))) {
rc = efault();
} else {
bzero(lool, sizeof(struct utsname));
return -1;
bzero(tmp, sizeof(tmp));
if (!IsWindows()) {
if ((rc = sys_uname(tmp)) != -1) {
out = (char *)lool;
for (i = j = 0;;) {
len = strlen(&tmp[j]);
if (len >= sizeof(struct utsname) - i) break;
memcpy(&out[i], &tmp[j], len + 1);
i += SYS_NMLN;
j += len;
while (j < sizeof(tmp) && tmp[j] == '\0') ++j;
if (j == sizeof(tmp)) break;
}
}
} else {
v = NtGetVersion();
p = lool->version;
p = FormatUint32(p, NtGetMajorVersion()), *p++ = '.';
p = FormatUint32(p, NtGetMinorVersion()), *p++ = '-';
p = FormatUint32(p, NtGetBuildNumber());
strcpy(lool->sysname, "The New Technology");
strcpy(lool->machine, "x86_64");
rc = gethostname_nt(lool->nodename, sizeof(lool->nodename),
kNtComputerNamePhysicalDnsHostname);
rc |= gethostname_nt(lool->domainname, sizeof(lool->domainname),
kNtComputerNamePhysicalDnsDomain);
}
}
STRACE("uname([%s, %s, %s, %s, %s, %s]) → %d% m", lool->sysname,
lool->nodename, lool->release, lool->version, lool->machine,
lool->domainname, rc);
return rc;
}