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// -*- mode: C; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil -*-
// vim: set softtabstop=4 shiftwidth=4 tabstop=4 expandtab:
/*************************************************************************
* Copyright 2009-2012 Eucalyptus Systems, 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
* the Free Software Foundation; version 3 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, see http://www.gnu.org/licenses/.
*
* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
* CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
* additional information or have any questions.
*
* This file may incorporate work covered under the following copyright
* and permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the
* following conditions are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE. USERS OF THIS SOFTWARE ACKNOWLEDGE
* THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE LICENSED MATERIAL,
* COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS SOFTWARE,
* AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA,
* SANTA BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY,
* WHICH IN THE REGENTS' DISCRETION MAY INCLUDE, WITHOUT LIMITATION,
* REPLACEMENT OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO
* IDENTIFIED, OR WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT
* NEEDED TO COMPLY WITH ANY SUCH LICENSES OR RIGHTS.
************************************************************************/
//!
//! @file util/euca_mountwrap.c
//! Need to provide description
//!
/*----------------------------------------------------------------------------*\
| |
| INCLUDES |
| |
\*----------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <unistd.h>
#include <pwd.h>
#ifndef __DARWIN_UNIX03
#include <sys/mount.h>
#else /* ! _DARWIN_C_SOURCE */
#include <linux/fs.h>
#endif /* ! _DARWIN_C_SOURCE */
/*----------------------------------------------------------------------------*\
| |
| DEFINES |
| |
\*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*\
| |
| TYPEDEFS |
| |
\*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*\
| |
| ENUMERATIONS |
| |
\*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*\
| |
| STRUCTURES |
| |
\*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*\
| |
| EXTERNAL VARIABLES |
| |
\*----------------------------------------------------------------------------*/
/* Should preferably be handled in header file */
/*----------------------------------------------------------------------------*\
| |
| GLOBAL VARIABLES |
| |
\*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*\
| |
| STATIC VARIABLES |
| |
\*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*\
| |
| EXPORTED PROTOTYPES |
| |
\*----------------------------------------------------------------------------*/
int main(int argc, char **argv);
/*----------------------------------------------------------------------------*\
| |
| STATIC PROTOTYPES |
| |
\*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*\
| |
| MACROS |
| |
\*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*\
| |
| IMPLEMENTATION |
| |
\*----------------------------------------------------------------------------*/
//!
//! Main entry point of the application
//!
//! @param[in] argc the number of parameter passed on the command line
//! @param[in] argv the list of arguments
//!
//! @return OK on success or ERROR on failure.
//!
int main(int argc, char **argv)
{
u_int i = 0;
int rc = 0;
uid_t uid = 0;
char *source = NULL;
char *target = NULL;
char *extra = NULL;
char *filesystems[] = { "ext4", "ext3", "ext2" }; // file systems to try, in that order
struct passwd *pass = NULL;
if (argc < 2) {
exit(1);
}
if (!strcmp("mount", argv[1])) {
if (argc < 4) {
exit(1);
}
source = argv[2];
target = argv[3];
if (argc > 4)
extra = argv[4];
// option --bind is not used by Eucalyptus, this is for debugging
if (extra && !strcmp("--bind", extra)) {
if ((rc = mount(source, target, NULL, MS_BIND, NULL)) != 0) {
perror("mount");
exit(1);
}
} else {
// normal mount, with or without the userid
for (i = 0; i < (sizeof(filesystems) / sizeof(char *)); i++) {
if ((rc = mount(source, target, filesystems[i], MS_MGC_VAL, NULL)) != 0) {
perror("mount");
} else {
break;
}
}
if (rc) {
// none of the file systems we tried worked
exit(1);
}
if (extra) {
// extra parameter is the username to chown the target to
if ((pass = getpwnam(extra)) == NULL) {
perror("getpwnam");
exit(1);
}
uid = pass->pw_uid;
if ((rc = chown(target, uid, (gid_t) - 1)) != 0) {
perror("chown");
exit(1);
}
}
}
} else if (!strcmp("umount", argv[1])) {
if (argc < 3) {
exit(1);
}
if ((rc = umount(argv[2])) != 0) {
perror("umount");
exit(1);
}
} else {
// unknown command
exit(1);
}
exit(0);
}
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