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https://github.com/jart/cosmopolitan.git
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791f79fcb3
- We now serialize the file descriptor table when spawning / executing processes on Windows. This means you can now inherit more stuff than just standard i/o. It's needed by bash, which duplicates the console to file descriptor #255. We also now do a better job serializing the environment variables, so you're less likely to encounter E2BIG when using your bash shell. We also no longer coerce environ to uppercase - execve() on Windows now remotely controls its parent process to make them spawn a replacement for itself. Then it'll be able to terminate immediately once the spawn succeeds, without having to linger around for the lifetime as a shell process for proxying the exit code. When process worker thread running in the parent sees the child die, it's given a handle to the new child, to replace it in the process table. - execve() and posix_spawn() on Windows will now provide CreateProcess an explicit handle list. This allows us to remove handle locks which enables better fork/spawn concurrency, with seriously correct thread safety. Other codebases like Go use the same technique. On the other hand fork() still favors the conventional WIN32 inheritence approach which can be a little bit messy, but is *controlled* by guaranteeing perfectly clean slates at both the spawning and execution boundaries - sigset_t is now 64 bits. Having it be 128 bits was a mistake because there's no reason to use that and it's only supported by FreeBSD. By using the system word size, signal mask manipulation on Windows goes very fast. Furthermore @asyncsignalsafe funcs have been rewritten on Windows to take advantage of signal masking, now that it's much more pleasant to use. - All the overlapped i/o code on Windows has been rewritten for pretty good signal and cancelation safety. We're now able to ensure overlap data structures are cleaned up so long as you don't longjmp() out of out of a signal handler that interrupted an i/o operation. Latencies are also improved thanks to the removal of lots of "busy wait" code. Waits should be optimal for everything except poll(), which shall be the last and final demon we slay in the win32 i/o horror show. - getrusage() on Windows is now able to report RUSAGE_CHILDREN as well as RUSAGE_SELF, thanks to aggregation in the process manager thread.
195 lines
8.9 KiB
C
195 lines
8.9 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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│ This is free and unencumbered software released into the public domain. │
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│ │
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│ Anyone is free to copy, modify, publish, use, compile, sell, or │
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│ distribute this software, either in source code form or as a compiled │
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│ binary, for any purpose, commercial or non-commercial, and by any │
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│ means. │
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│ │
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│ In jurisdictions that recognize copyright laws, the author or authors │
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│ of this software dedicate any and all copyright interest in the │
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│ software to the public domain. We make this dedication for the benefit │
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│ of the public at large and to the detriment of our heirs and │
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│ successors. We intend this dedication to be an overt act of │
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│ relinquishment in perpetuity of all present and future rights to this │
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│ software under copyright law. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
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│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
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│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
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│ IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR │
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│ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, │
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│ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR │
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│ OTHER DEALINGS IN THE SOFTWARE. │
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│ │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/dns/servicestxt.h"
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#include "libc/calls/calls.h"
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#include "libc/dns/dns.h"
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#include "libc/dns/ent.h"
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#include "libc/runtime/internal.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/testlib/testlib.h"
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void SetUpOnce(void) {
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testlib_enable_tmp_setup_teardown();
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}
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void SetUp() {
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int fd;
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const char* sample = "\
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# skip comment string\n\
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chargen 19/tcp ttytst source\n\
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chargen 19/udp ttytst source\n\
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ssh 22/tcp # SSH Remote Login Protocol";
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ASSERT_NE(-1, (fd = creat("services", 0755)));
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ASSERT_NE(-1, write(fd, sample, strlen(sample)));
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ASSERT_NE(-1, close(fd));
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}
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/* TEST(LookupServicesByPort, GetNameWhenPortCorrect) { */
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/* char name[8]; /\* service names are of length 3 *\/ */
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/* char eitherproto[8]; /\* protocol names are of length 3 *\/ */
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/* char proto1[] = "tcp"; */
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/* char proto2[] = "udp"; */
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/* char* localproto; */
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/* strcpy(eitherproto, ""); */
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/* strcpy(name, ""); */
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/* localproto = eitherproto; */
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/* ASSERT_EQ(-1, /\* non existent port *\/ */
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/* LookupServicesByPort(965, localproto, sizeof(eitherproto), name,
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*/
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/* sizeof(name), "services")); */
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/* ASSERT_EQ('\0', localproto[0]); */
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/* localproto = eitherproto; */
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/* ASSERT_EQ(-1, /\* port in network byte order *\/ */
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/* LookupServicesByPort(htons(22), localproto, sizeof(eitherproto),
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*/
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/* name, sizeof(name), "services")); */
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/* ASSERT_EQ('\0', localproto[0]); */
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/* localproto = proto2; */
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/* ASSERT_EQ(-1, /\* port ok but wrong protocol *\/ */
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/* LookupServicesByPort(22, localproto, sizeof(proto2), name, */
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/* sizeof(name), "services")); */
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/* ASSERT_STREQ(proto2, "udp"); */
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/* localproto = proto1; */
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/* ASSERT_EQ( */
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/* -1, /\* protocol is non-NULL/length must be nonzero *\/ */
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/* LookupServicesByPort(22, localproto, 0, name, sizeof(name),
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* "services")); */
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/* ASSERT_STREQ(proto1, "tcp"); */
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/* localproto = proto1; */
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/* ASSERT_EQ(-1, /\* sizeof(name) insufficient, memccpy failure *\/ */
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/* LookupServicesByPort(22, localproto, sizeof(proto1), name, 1, */
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/* "services")); */
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/* ASSERT_STREQ(proto1, "tcp"); */
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/* ASSERT_STREQ(name, ""); /\* cleaned up after memccpy failed *\/ */
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/* localproto = eitherproto; */
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/* ASSERT_EQ( */
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/* -1, /\* sizeof(proto) insufficient, memccpy failure *\/ */
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/* LookupServicesByPort(22, localproto, 1, name, sizeof(name),
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* "services")); */
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/* ASSERT_STREQ(eitherproto, ""); /\* cleaned up after memccpy failed *\/ */
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/* localproto = proto1; */
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/* ASSERT_EQ(0, LookupServicesByPort(22, localproto, sizeof(proto1), name, */
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/* sizeof(name), "services")); */
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/* ASSERT_STREQ(name, "ssh"); */
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/* ASSERT_STREQ(proto1, "tcp"); */
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/* localproto = proto2; */
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/* ASSERT_EQ(0, LookupServicesByPort(19, localproto, sizeof(proto2), name, */
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/* sizeof(name), "services")); */
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/* ASSERT_STREQ(name, "chargen"); */
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/* ASSERT_STREQ(proto2, "udp"); */
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/* localproto = eitherproto; */
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/* ASSERT_EQ(0, /\* pick first matching protocol *\/ */
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/* LookupServicesByPort(19, localproto, sizeof(eitherproto), name,
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*/
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/* sizeof(name), "services")); */
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/* ASSERT_STREQ(name, "chargen"); */
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/* ASSERT_NE('\0', localproto[0]); /\* buffer filled during the call *\/ */
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/* ASSERT_STREQ(eitherproto, "tcp"); */
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/* } */
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TEST(LookupServicesByName, GetPortWhenNameOrAlias) {
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char name[8]; /* service names are of length 3 */
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char eitherproto[8]; /* protocol names are of length 3 */
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char proto1[] = "tcp";
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char proto2[] = "udp";
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char* localproto;
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strcpy(eitherproto, "");
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strcpy(name, "");
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/* localproto = eitherproto; */
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/* ASSERT_EQ(-1, /\* non-existent name *\/ */
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/* LookupServicesByName("http", localproto, sizeof(eitherproto),
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* name, */
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/* sizeof(name), "services")); */
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/* ASSERT_EQ('\0', localproto[0]); */
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/* localproto = proto2; */
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/* ASSERT_EQ(-1, /\* name exists but wrong protocol *\/ */
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/* LookupServicesByName("ssh", localproto, sizeof(proto2), name, */
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/* sizeof(name), "services")); */
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/* ASSERT_STREQ(proto2, "udp"); */
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/* localproto = proto2; */
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/* ASSERT_EQ(-1, /\* protocol is non-NULL/length must be nonzero *\/ */
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/* LookupServicesByName("ssh", localproto, sizeof(proto2), name, */
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/* sizeof(name), "services")); */
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/* ASSERT_STREQ(proto2, "udp"); */
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/* localproto = proto1; */
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/* ASSERT_EQ(-1, /\* sizeof(name) insufficient, memccpy failure *\/ */
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/* LookupServicesByName("ssh", localproto, sizeof(proto1), name, 1,
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*/
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/* "services")); */
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/* ASSERT_STREQ(proto1, "tcp"); */
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/* ASSERT_STREQ(name, ""); /\* cleaned up after memccpy failed *\/ */
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/* localproto = eitherproto; */
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/* ASSERT_EQ(-1, /\* sizeof(proto) insufficient, memccpy failure *\/ */
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/* LookupServicesByName("ssh", localproto, 1, name, sizeof(name), */
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/* "services")); */
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/* ASSERT_STREQ(eitherproto, ""); /\* cleaned up after memccpy failed *\/ */
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ftrace_install();
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strace_enabled(+1);
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ftrace_enabled(+1);
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localproto = proto1;
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ASSERT_EQ(22, LookupServicesByName("ssh", localproto, sizeof(proto1), name,
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sizeof(name), "services"));
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ASSERT_STREQ(name, "ssh"); /* official name written to buffer */
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ASSERT_STREQ(proto1, "tcp");
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localproto = proto2;
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ASSERT_EQ(19, /* works if alias provided */
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LookupServicesByName("ttytst", localproto, sizeof(proto2), name,
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sizeof(name), "services"));
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ASSERT_STREQ(name, "chargen"); /* official name written to buffer */
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localproto = proto2;
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ASSERT_EQ(19, /* can get port returned without official name */
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LookupServicesByName("ttytst", localproto, sizeof(proto2), NULL, 0,
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"services"));
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localproto = eitherproto;
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ASSERT_EQ(19, /* pick first matching protocol */
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LookupServicesByName("source", localproto, sizeof(eitherproto),
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name, sizeof(name), "services"));
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ASSERT_STREQ(name, "chargen");
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ASSERT_STREQ(localproto, "tcp");
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}
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