1 files changed, 334 insertions, 0 deletions
diff --git a/Utilities/cmlibuv/src/unix/os390-syscalls.c b/Utilities/cmlibuv/src/unix/os390-syscalls.c
new file mode 100644
index 0000000..2bf3b73
--- /dev/null
+++ b/Utilities/cmlibuv/src/unix/os390-syscalls.c
@@ -0,0 +1,334 @@
+/* Copyright libuv project contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+
+#include "os390-syscalls.h"
+#include <errno.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <search.h>
+
+#define CW_CONDVAR 32
+
+#pragma linkage(BPX4CTW, OS)
+#pragma linkage(BPX1CTW, OS)
+
+static int number_of_epolls;
+static QUEUE global_epoll_queue;
+static uv_mutex_t global_epoll_lock;
+static uv_once_t once = UV_ONCE_INIT;
+
+int scandir(const char* maindir, struct dirent*** namelist,
+            int (*filter)(const struct dirent*),
+            int (*compar)(const struct dirent**,
+            const struct dirent **)) {
+  struct dirent** nl;
+  struct dirent* dirent;
+  unsigned count;
+  size_t allocated;
+  DIR* mdir;
+
+  nl = NULL;
+  count = 0;
+  allocated = 0;
+  mdir = opendir(maindir);
+  if (!mdir)
+    return -1;
+
+  while (1) {
+    dirent = readdir(mdir);
+    if (!dirent)
+      break;
+    if (!filter || filter(dirent)) {
+      struct dirent* copy;
+      copy = uv__malloc(sizeof(*copy));
+      if (!copy) {
+        while (count) {
+          dirent = nl[--count];
+          uv__free(dirent);
+        }
+        uv__free(nl);
+        closedir(mdir);
+        errno = ENOMEM;
+        return -1;
+      }
+      memcpy(copy, dirent, sizeof(*copy));
+
+      nl = uv__realloc(nl, sizeof(*copy) * (count + 1));
+      nl[count++] = copy;
+    }
+  }
+
+  qsort(nl, count, sizeof(struct dirent *),
+       (int (*)(const void *, const void *)) compar);
+
+  closedir(mdir);
+
+  *namelist = nl;
+  return count;
+}
+
+
+static unsigned int next_power_of_two(unsigned int val) {
+  val -= 1;
+  val |= val >> 1;
+  val |= val >> 2;
+  val |= val >> 4;
+  val |= val >> 8;
+  val |= val >> 16;
+  val += 1;
+  return val;
+}
+
+
+static void maybe_resize(uv__os390_epoll* lst, unsigned int len) {
+  unsigned int newsize;
+  unsigned int i;
+  struct pollfd* newlst;
+
+  if (len <= lst->size)
+    return;
+
+  newsize = next_power_of_two(len);
+  newlst = uv__realloc(lst->items, newsize * sizeof(lst->items[0]));
+
+  if (newlst == NULL)
+    abort();
+  for (i = lst->size; i < newsize; ++i)
+    newlst[i].fd = -1;
+
+  lst->items = newlst;
+  lst->size = newsize;
+}
+
+
+static void epoll_init() {
+  QUEUE_INIT(&global_epoll_queue);
+  if (uv_mutex_init(&global_epoll_lock))
+    abort();
+}
+
+
+uv__os390_epoll* epoll_create1(int flags) {
+  uv__os390_epoll* lst;
+
+  uv_once(&once, epoll_init);
+  uv_mutex_lock(&global_epoll_lock);
+  lst = uv__malloc(sizeof(*lst));
+  if (lst == -1)
+    return NULL;
+  QUEUE_INSERT_TAIL(&global_epoll_queue, &lst->member);
+  uv_mutex_unlock(&global_epoll_lock);
+
+  /* initialize list */
+  lst->size = 0;
+  lst->items = NULL;
+  return lst;
+}
+
+
+int epoll_ctl(uv__os390_epoll* lst,
+              int op,
+              int fd,
+              struct epoll_event *event) {
+  if(op == EPOLL_CTL_DEL) {
+    if (fd >= lst->size || lst->items[fd].fd == -1) {
+      errno = ENOENT;
+      return -1;
+    }
+    lst->items[fd].fd = -1;
+  } else if(op == EPOLL_CTL_ADD) {
+    maybe_resize(lst, fd + 1);
+    if (lst->items[fd].fd != -1) {
+      errno = EEXIST;
+      return -1;
+    }
+    lst->items[fd].fd = fd;
+    lst->items[fd].events = event->events;
+  } else if(op == EPOLL_CTL_MOD) {
+    if (fd >= lst->size || lst->items[fd].fd == -1) {
+      errno = ENOENT;
+      return -1;
+    }
+    lst->items[fd].events = event->events;
+  } else
+    abort();
+
+  return 0;
+}
+
+
+int epoll_wait(uv__os390_epoll* lst, struct epoll_event* events,
+               int maxevents, int timeout) {
+  size_t size;
+  struct pollfd* pfds;
+  int pollret;
+  int reventcount;
+
+  uv_mutex_lock(&global_epoll_lock);
+  uv_mutex_unlock(&global_epoll_lock);
+  size = lst->size;
+  pfds = lst->items;
+  pollret = poll(pfds, size, timeout);
+  if(pollret == -1)
+    return pollret;
+
+  reventcount = 0;
+  for (int i = 0; i < lst->size && i < maxevents; ++i) {
+    struct epoll_event ev;
+
+    ev.events = 0;
+    ev.fd = pfds[i].fd;
+    if(!pfds[i].revents)
+      continue;
+
+    if(pfds[i].revents & POLLRDNORM)
+      ev.events = ev.events | POLLIN;
+
+    if(pfds[i].revents & POLLWRNORM)
+      ev.events = ev.events | POLLOUT;
+
+    if(pfds[i].revents & POLLHUP)
+      ev.events = ev.events | POLLHUP;
+
+    pfds[i].revents = 0;
+    events[reventcount++] = ev;
+  }
+
+  return reventcount;
+}
+
+
+int epoll_file_close(int fd) {
+  QUEUE* q;
+
+  uv_once(&once, epoll_init);
+  uv_mutex_lock(&global_epoll_lock);
+  QUEUE_FOREACH(q, &global_epoll_queue) {
+    uv__os390_epoll* lst;
+
+    lst = QUEUE_DATA(q, uv__os390_epoll, member);
+    if (fd < lst->size && lst->items != NULL && lst->items[fd].fd != -1)
+      lst->items[fd].fd = -1;
+  }
+
+  uv_mutex_unlock(&global_epoll_lock);
+  return 0;
+}
+
+void epoll_queue_close(uv__os390_epoll* lst) {
+  uv_mutex_lock(&global_epoll_lock);
+  QUEUE_REMOVE(&lst->member);
+  uv_mutex_unlock(&global_epoll_lock);
+  uv__free(lst->items);
+  lst->items = NULL;
+}
+
+
+int nanosleep(const struct timespec* req, struct timespec* rem) {
+  unsigned nano;
+  unsigned seconds;
+  unsigned events;
+  unsigned secrem;
+  unsigned nanorem;
+  int rv;
+  int rc;
+  int rsn;
+
+  nano = (int)req->tv_nsec;
+  seconds = req->tv_sec;
+  events = CW_CONDVAR;
+
+#if defined(_LP64)
+  BPX4CTW(&seconds, &nano, &events, &secrem, &nanorem, &rv, &rc, &rsn);
+#else
+  BPX1CTW(&seconds, &nano, &events, &secrem, &nanorem, &rv, &rc, &rsn);
+#endif
+
+  assert(rv == -1 && errno == EAGAIN);
+
+  if(rem != NULL) {
+    rem->tv_nsec = nanorem;
+    rem->tv_sec = secrem;
+  }
+
+  return 0;
+}
+
+
+char* mkdtemp(char* path) {
+  static const char* tempchars =
+    "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+  static const size_t num_chars = 62;
+  static const size_t num_x = 6;
+  char *ep, *cp;
+  unsigned int tries, i;
+  size_t len;
+  uint64_t v;
+  int fd;
+  int retval;
+  int saved_errno;
+
+  len = strlen(path);
+  ep = path + len;
+  if (len < num_x || strncmp(ep - num_x, "XXXXXX", num_x)) {
+    errno = EINVAL;
+    return NULL;
+  }
+
+  fd = open("/dev/urandom", O_RDONLY);
+  if (fd == -1)
+    return NULL;
+
+  tries = TMP_MAX;
+  retval = -1;
+  do {
+    if (read(fd, &v, sizeof(v)) != sizeof(v))
+      break;
+
+    cp = ep - num_x;
+    for (i = 0; i < num_x; i++) {
+      *cp++ = tempchars[v % num_chars];
+      v /= num_chars;
+    }
+
+    if (mkdir(path, S_IRWXU) == 0) {
+      retval = 0;
+      break;
+    }
+    else if (errno != EEXIST)
+      break;
+  } while (--tries);
+
+  saved_errno = errno;
+  uv__close(fd);
+  if (tries == 0) {
+    errno = EEXIST;
+    return NULL;
+  }
+
+  if (retval == -1) {
+    errno = saved_errno;
+    return NULL;
+  }
+
+  return path;
+}