From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/mysys/my_chmod.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 mysql/mysys/my_chmod.c

(limited to 'mysql/mysys/my_chmod.c')

diff --git a/mysql/mysys/my_chmod.c b/mysql/mysys/my_chmod.c
new file mode 100644
index 0000000..389960d
--- /dev/null
+++ b/mysql/mysys/my_chmod.c
@@ -0,0 +1,102 @@
+/* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
+
+   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
+   the Free Software Foundation; version 2 of the License.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA */
+
+
+#include "mysys_priv.h"
+#include "my_sys.h"
+#include "mysys_err.h"
+#include <my_dir.h>
+#include "my_thread_local.h"
+
+/*
+  Generate MY_MODE representation from perm_flags.
+
+  @param perm_flags Permission information
+
+  @return Permission in MY_STAT format
+*/
+
+MY_MODE get_file_perm(ulong perm_flags)
+{
+  MY_MODE file_perm= 0;
+  if (perm_flags <= 0)
+    return file_perm;
+
+#if defined _WIN32
+  if (perm_flags & (USER_READ | GROUP_READ | OTHERS_READ))
+    file_perm|= _S_IREAD;
+  if (perm_flags & (USER_WRITE | GROUP_WRITE | OTHERS_WRITE))
+    file_perm|= _S_IWRITE;
+#else
+  if (perm_flags & USER_READ)
+    file_perm|= S_IRUSR;
+  if (perm_flags & USER_WRITE)
+    file_perm|= S_IWUSR;
+  if (perm_flags & USER_EXECUTE)
+    file_perm|= S_IXUSR;
+  if (perm_flags & GROUP_READ)
+    file_perm|= S_IRGRP;
+  if (perm_flags & GROUP_WRITE)
+    file_perm|= S_IWGRP;
+  if (perm_flags & GROUP_EXECUTE)
+    file_perm|= S_IXGRP;
+  if (perm_flags & OTHERS_READ)
+    file_perm|= S_IROTH;
+  if (perm_flags & OTHERS_WRITE)
+    file_perm|= S_IWOTH;
+  if (perm_flags & OTHERS_EXECUTE)
+    file_perm|= S_IXOTH;
+#endif
+
+  return file_perm;
+}
+
+/*
+  my_chmod : Change permission on a file
+
+  @param filename : Name of the file
+  @param perm_flags : Permission information
+  @param my_flags : Error handling
+
+  @return
+    @retval TRUE : Error changing file permission
+    @retval FALSE : File permission changed successfully
+*/
+
+my_bool my_chmod(const char *filename, ulong perm_flags, myf my_flags)
+{
+  int ret_val;
+  MY_MODE file_perm;
+  DBUG_ENTER("my_chmod");
+  DBUG_ASSERT(filename && filename[0]);
+
+  file_perm= get_file_perm(perm_flags);
+#ifdef _WIN32
+  ret_val= _chmod(filename, file_perm);
+#else
+  ret_val= chmod(filename, file_perm);
+#endif
+
+  if (ret_val && (my_flags & (MY_FAE+MY_WME)))
+  {
+    char errbuf[MYSYS_STRERROR_SIZE];
+    set_my_errno(errno);
+    my_error(EE_CHANGE_PERMISSIONS, MYF(0), filename,
+             errno, my_strerror(errbuf, sizeof(errbuf), errno));
+  }
+
+  DBUG_RETURN(ret_val ? TRUE : FALSE);
+}
-- 
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