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110 lines
3.5 KiB
110 lines
3.5 KiB
5 months ago
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/* Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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Without limiting anything contained in the foregoing, this file,
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which is part of C Driver for MySQL (Connector/C), is also subject to the
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Universal FOSS Exception, version 1.0, a copy of which can be found at
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http://oss.oracle.com/licenses/universal-foss-exception.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/**
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@file mysys/my_chmod.cc
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "my_dbug.h"
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#include "my_inttypes.h"
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#include "my_io.h"
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#include "my_sys.h"
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#include "my_thread_local.h"
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#include "mysys_err.h"
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/*
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Generate MY_MODE representation from perm_flags.
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@param perm_flags Permission information
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@return Permission in MY_STAT format
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*/
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MY_MODE get_file_perm(ulong perm_flags) {
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MY_MODE file_perm = 0;
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if (perm_flags <= 0) return file_perm;
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#if defined _WIN32
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if (perm_flags & (USER_READ | GROUP_READ | OTHERS_READ))
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file_perm |= _S_IREAD;
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if (perm_flags & (USER_WRITE | GROUP_WRITE | OTHERS_WRITE))
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file_perm |= _S_IWRITE;
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#else
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if (perm_flags & USER_READ) file_perm |= S_IRUSR;
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if (perm_flags & USER_WRITE) file_perm |= S_IWUSR;
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if (perm_flags & USER_EXECUTE) file_perm |= S_IXUSR;
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if (perm_flags & GROUP_READ) file_perm |= S_IRGRP;
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if (perm_flags & GROUP_WRITE) file_perm |= S_IWGRP;
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if (perm_flags & GROUP_EXECUTE) file_perm |= S_IXGRP;
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if (perm_flags & OTHERS_READ) file_perm |= S_IROTH;
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if (perm_flags & OTHERS_WRITE) file_perm |= S_IWOTH;
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if (perm_flags & OTHERS_EXECUTE) file_perm |= S_IXOTH;
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#endif
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return file_perm;
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}
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/*
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my_chmod : Change permission on a file
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@param filename : Name of the file
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@param perm_flags : Permission information
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@param my_flags : Error handling
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@return
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@retval true : Error changing file permission
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@retval false : File permission changed successfully
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*/
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bool my_chmod(const char *filename, ulong perm_flags, myf my_flags) {
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int ret_val;
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MY_MODE file_perm;
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DBUG_TRACE;
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DBUG_ASSERT(filename && filename[0]);
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file_perm = get_file_perm(perm_flags);
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#ifdef _WIN32
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ret_val = _chmod(filename, file_perm);
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#else
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ret_val = chmod(filename, file_perm);
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#endif
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if (ret_val && (my_flags & (MY_FAE + MY_WME))) {
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char errbuf[MYSYS_STRERROR_SIZE];
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set_my_errno(errno);
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my_error(EE_CHANGE_PERMISSIONS, MYF(0), filename, errno,
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my_strerror(errbuf, sizeof(errbuf), errno));
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}
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return ret_val ? true : false;
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}
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