New upstream version 1.8

[debian/gzip] / lib / fcntl.c

diff --git a/lib/fcntl.c b/lib/fcntl.c
index 735fa66f4d76484b2a3177c9f7f56ff61d95542d..fd17e962f8bb9671c5e18ac60696d3583ec0edba 100644 (file)
--- a/lib/fcntl.c
+++ b/lib/fcntl.c
@@ -1,6 +1,6 @@
 /* Provide file descriptor control.
 
-   Copyright (C) 2009-2013 Free Software Foundation, Inc.
+   Copyright (C) 2009-2016 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -89,8 +89,25 @@ dupfd (int oldfd, int newfd, int flags)
                             inherit,                /* InheritHandle */
                             DUPLICATE_SAME_ACCESS)) /* Options */
         {
-          /* TODO: Translate GetLastError () into errno.  */
-          errno = EMFILE;
+          switch (GetLastError ())
+            {
+              case ERROR_TOO_MANY_OPEN_FILES:
+                errno = EMFILE;
+                break;
+              case ERROR_INVALID_HANDLE:
+              case ERROR_INVALID_TARGET_HANDLE:
+              case ERROR_DIRECT_ACCESS_HANDLE:
+                errno = EBADF;
+                break;
+              case ERROR_INVALID_PARAMETER:
+              case ERROR_INVALID_FUNCTION:
+              case ERROR_INVALID_ACCESS:
+                errno = EINVAL;
+                break;
+              default:
+                errno = EACCES;
+                break;
+            }
           result = -1;
           break;
         }
@@ -98,7 +115,6 @@ dupfd (int oldfd, int newfd, int flags)
       if (duplicated_fd < 0)
         {
           CloseHandle (new_handle);
-          errno = EMFILE;
           result = -1;
           break;
         }
@@ -146,6 +162,93 @@ dupfd (int oldfd, int newfd, int flags)
 }
 #endif /* W32 */
 
+#ifdef __KLIBC__
+
+# define INCL_DOS
+# include <os2.h>
+
+static int
+klibc_fcntl (int fd, int action, /* arg */...)
+{
+  va_list arg_ptr;
+  int arg;
+  struct stat sbuf;
+  int result = -1;
+
+  va_start (arg_ptr, action);
+  arg = va_arg (arg_ptr, int);
+  result = fcntl (fd, action, arg);
+  /* EPERM for F_DUPFD, ENOTSUP for others */
+  if (result == -1 && (errno == EPERM || errno == ENOTSUP)
+      && !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
+  {
+    ULONG ulMode;
+
+    switch (action)
+      {
+      case F_DUPFD:
+        /* Find available fd */
+        while (fcntl (arg, F_GETFL) != -1 || errno != EBADF)
+          arg++;
+
+        result = dup2 (fd, arg);
+        break;
+
+      /* Using underlying APIs is right ? */
+      case F_GETFD:
+        if (DosQueryFHState (fd, &ulMode))
+          break;
+
+        result = (ulMode & OPEN_FLAGS_NOINHERIT) ? FD_CLOEXEC : 0;
+        break;
+
+      case F_SETFD:
+        if (arg & ~FD_CLOEXEC)
+          break;
+
+        if (DosQueryFHState (fd, &ulMode))
+          break;
+
+        if (arg & FD_CLOEXEC)
+          ulMode |= OPEN_FLAGS_NOINHERIT;
+        else
+          ulMode &= ~OPEN_FLAGS_NOINHERIT;
+
+        /* Filter supported flags.  */
+        ulMode &= (OPEN_FLAGS_WRITE_THROUGH | OPEN_FLAGS_FAIL_ON_ERROR
+                   | OPEN_FLAGS_NO_CACHE | OPEN_FLAGS_NOINHERIT);
+
+        if (DosSetFHState (fd, ulMode))
+          break;
+
+        result = 0;
+        break;
+
+      case F_GETFL:
+        result = 0;
+        break;
+
+      case F_SETFL:
+        if (arg != 0)
+          break;
+
+        result = 0;
+        break;
+
+      default :
+        errno = EINVAL;
+        break;
+      }
+  }
+
+  va_end (arg_ptr);
+
+  return result;
+}
+
+# define fcntl klibc_fcntl
+#endif
+
 /* Perform the specified ACTION on the file descriptor FD, possibly
    using the argument ARG further described below.  This replacement
    handles the following actions, and forwards all others on to the