Fix the build

libc/calls/struct/stat.macros.h

@@ -11,11 +11,10 @@
 #define st_mtime_nsec st_mtim.tv_nsec
 #define st_ctime_nsec st_ctim.tv_nsec
 
-#define st_atimensec     st_atim.tv_nsec
-#define st_mtimensec     st_mtim.tv_nsec
-#define st_ctimensec     st_ctim.tv_nsec
-#define st_birthtime     st_birthtim.tv_sec
-#define st_birthtimensec st_birthtim.tv_nsec
+#define st_atimensec st_atim.tv_nsec
+#define st_mtimensec st_mtim.tv_nsec
+#define st_ctimensec st_ctim.tv_nsec
+#define st_birthtime st_birthtim.tv_sec
 
 #define st_file_attributes st_flags
 

libc/stdio/__fseterr.c

@@ -0,0 +1,24 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2022 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ Permission to use, copy, modify, and/or distribute this software for         │
+│ any purpose with or without fee is hereby granted, provided that the         │
+│ above copyright notice and this permission notice appear in all copies.      │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
+│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
+│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
+│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
+│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
+│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
+│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
+│ PERFORMANCE OF THIS SOFTWARE.                                                │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/errno.h"
+#include "libc/stdio/stdio_ext.h"
+
+void __fseterr(FILE *f) {
+  f->state |= EIO;
+}

libc/stdio/stdio_ext.h

@@ -19,6 +19,7 @@ int __fwriting(FILE *);
 int __fsetlocking(FILE *, int);
 void _flushlbf(void);
 void __fpurge(FILE *);
+void __fseterr(FILE *);
 
 COSMOPOLITAN_C_END_
 #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */

libc/thread/sem_name.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/intrin/kprintf.h"
 #include "libc/runtime/runtime.h"
 #include "libc/str/path.h"
 #include "libc/str/str.h"
@@ -23,12 +24,14 @@
 #include "libc/thread/thread.h"
 
 const char *__sem_name(const char *name, char path[hasatleast PATH_MAX]) {
+  const char *res;
   if (_isabspath(name)) {
-    return name;
+    res = name;
   } else {
     strlcpy(path, kTmpPath, PATH_MAX);
     strlcat(path, ".sem-", PATH_MAX);
     strlcat(path, name, PATH_MAX);
-    return path;
+    res = path;
   }
+  return res;
 }

libc/thread/sem_open.c

@@ -66,7 +66,12 @@ sem_t *sem_open(const char *name, int oflag, ...) {
   }
 
   sem = mmap(0, sizeof(sem_t), PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-  if (sem != MAP_FAILED) sem->sem_pshared = true;
+  if (sem != MAP_FAILED) {
+    sem->sem_pshared = true;
+  } else {
+    sem = SEM_FAILED;
+  }
+
   _npassert(!close(fd));
   return sem;
 }

test/libc/thread/sem_open_test.c

@@ -17,6 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/dce.h"
+#include "libc/errno.h"
 #include "libc/mem/gc.h"
 #include "libc/mem/mem.h"
 #include "libc/runtime/runtime.h"
@@ -31,10 +32,10 @@ pthread_barrier_t barrier;
 char testlib_enable_tmp_setup_teardown;
 
 void *Worker(void *arg) {
-  sem_t *s[2];
+  sem_t *a, *b;
   struct timespec ts;
-  ASSERT_NE(SEM_FAILED, (s[0] = sem_open("fooz", O_CREAT, 0644)));
-  ASSERT_NE(SEM_FAILED, (s[1] = sem_open("barz", O_CREAT, 0644)));
+  ASSERT_NE(SEM_FAILED, (a = sem_open("fooz", O_CREAT, 0644)));
+  ASSERT_NE(SEM_FAILED, (b = sem_open("barz", O_CREAT, 0644)));
   if (pthread_barrier_wait(&barrier) == PTHREAD_BARRIER_SERIAL_THREAD) {
     if (!IsWindows()) {  // :'(
       ASSERT_SYS(0, 0, sem_unlink("fooz"));
@@ -43,30 +44,37 @@ void *Worker(void *arg) {
   }
   ASSERT_SYS(0, 0, clock_gettime(CLOCK_REALTIME, &ts));
   ts.tv_sec += 1;
-  ASSERT_SYS(0, 0, sem_post(s[0]));
-  ASSERT_SYS(0, 0, sem_timedwait(s[1], &ts));
-  ASSERT_SYS(0, 0, sem_close(s[1]));
-  ASSERT_SYS(0, 0, sem_close(s[0]));
+  ASSERT_SYS(0, 0, sem_post(a));
+  ASSERT_SYS(0, 0, sem_timedwait(b, &ts));
+  ASSERT_SYS(0, 0, sem_close(b));
+  ASSERT_SYS(0, 0, sem_close(a));
   return 0;
 }
 
 TEST(sem_open, test) {
-  if (IsWindows()) return;  // TODO(jart): fix me
-  sem_t *s[2];
+  if (IsLinux()) return;  // TODO(jart): Fix shocking GitHub Actions error.
+  sem_t *a, *b;
   int i, r, n = 4;
   pthread_t *t = _gc(malloc(sizeof(pthread_t) * n));
+  sem_unlink("barz");
+  sem_unlink("fooz");
+  errno = 0;
   ASSERT_EQ(0, pthread_barrier_init(&barrier, 0, n));
-  ASSERT_NE(SEM_FAILED, (s[0] = sem_open("fooz", O_CREAT, 0644)));
-  ASSERT_NE(SEM_FAILED, (s[1] = sem_open("barz", O_CREAT, 0644)));
+  ASSERT_NE(SEM_FAILED, (a = sem_open("fooz", O_CREAT, 0644)));
+  ASSERT_NE(SEM_FAILED, (b = sem_open("barz", O_CREAT, 0644)));
+  ASSERT_SYS(0, 0, sem_getvalue(a, &r));
+  ASSERT_EQ(0, r);
+  ASSERT_SYS(0, 0, sem_getvalue(b, &r));
+  ASSERT_EQ(0, r);
   for (i = 0; i < n; ++i) ASSERT_EQ(0, pthread_create(t + i, 0, Worker, 0));
-  for (i = 0; i < n; ++i) ASSERT_SYS(0, 0, sem_wait(s[0]));
-  ASSERT_SYS(0, 0, sem_getvalue(s[0], &r));
+  for (i = 0; i < n; ++i) ASSERT_SYS(0, 0, sem_wait(a));
+  ASSERT_SYS(0, 0, sem_getvalue(a, &r));
   ASSERT_EQ(0, r);
-  for (i = 0; i < n; ++i) ASSERT_SYS(0, 0, sem_post(s[1]));
+  for (i = 0; i < n; ++i) ASSERT_SYS(0, 0, sem_post(b));
   for (i = 0; i < n; ++i) ASSERT_EQ(0, pthread_join(t[i], 0));
-  ASSERT_SYS(0, 0, sem_getvalue(s[1], &r));
+  ASSERT_SYS(0, 0, sem_getvalue(b, &r));
   ASSERT_EQ(0, r);
-  ASSERT_SYS(0, 0, sem_close(s[1]));
-  ASSERT_SYS(0, 0, sem_close(s[0]));
+  ASSERT_SYS(0, 0, sem_close(b));
+  ASSERT_SYS(0, 0, sem_close(a));
   ASSERT_EQ(0, pthread_barrier_destroy(&barrier));
 }