2.5-18.1

1 files changed, 70 insertions, 0 deletions

diff --git a/sysdeps/mach/hurd/faccessat.c b/sysdeps/mach/hurd/faccessat.c
new file mode 100644
index 0000000000..bb3c9fe19f
--- /dev/null
+++ b/sysdeps/mach/hurd/faccessat.c
@@ -0,0 +1,70 @@
+/* Test for access to file, relative to open directory.  Hurd version.
+   Copyright (C) 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+
+int
+faccessat (fd, file, type, flag)
+     int fd;
+     const char *file;
+     int type;
+     int flag;
+{
+  error_t err;
+  file_t port;
+  int allowed, flags;
+
+  if ((flag & AT_EACCESS) == 0)
+    {
+      if (fd == AT_FDCWD || file[0] == '/')
+	return __access (file, type);
+      __set_errno (ENOTSUP);	/* XXX later */
+      return -1;
+    }
+
+  port = __file_name_lookup_at (fd, flag &~ AT_EACCESS, file, 0, 0);
+  if (port == MACH_PORT_NULL)
+    return -1;
+
+  /* Find out what types of access we are allowed to this file.  */
+  err = __file_check_access (port, &allowed);
+  __mach_port_deallocate (__mach_task_self (), port);
+  if (err)
+    return __hurd_fail (err);
+
+  flags = 0;
+  if (type & R_OK)
+    flags |= O_READ;
+  if (type & W_OK)
+    flags |= O_WRITE;
+  if (type & X_OK)
+    flags |= O_EXEC;
+
+  if (flags & ~allowed)
+    /* We are not allowed all the requested types of access.  */
+    return __hurd_fail (EACCES);
+
+  return 0;
+}