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/*
* Guillaume Cottenceau (gc)
*
* Copyright 2000 Mandriva
*
* This software may be freely redistributed under the terms of the GNU
* public license.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
* Portions from Erik Troan (ewt@redhat.com)
*
* Copyright 1996 Red Hat Software
*
*/
// for asprintf:
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "log.h"
#include "utils.h"
#include "modules.h"
#include "mount.h"
/* WARNING: this won't work if the argument is not /dev/ based */
int ensure_dev_exists(const char * dev)
{
struct stat buf;
if (!stat(dev, &buf))
return 0; /* if the file already exists, we assume it's correct */
// give udev some time to create nodes if module was just insmoded:
system("udevadm settle");
if (!stat(dev, &buf)) {
log_message("I don't know how to create device %s, please post bugreport to me!", dev);
return -1;
}
return 0;
}
/* mounts, creating the device if needed+possible */
int my_mount(char *dev, char *location, char *fs, int force_rw)
{
char * opts = NULL;
struct stat buf;
int rc;
if (strcmp(fs, "nfs")) {
rc = ensure_dev_exists(dev);
if (rc != 0) {
log_message("could not create required device file");
return -1;
}
}
log_message("mounting %s on %s as type %s", dev, location, fs);
if (stat(location, &buf)) {
if (mkdir(location, 0755)) {
log_perror("could not create location dir");
return -1;
}
} else if (!S_ISDIR(buf.st_mode)) {
log_message("not a dir %s, will unlink and mkdir", location);
if (unlink(location)) {
log_perror("could not unlink");
return -1;
}
if (mkdir(location, 0755)) {
log_perror("could not create location dir");
return -1;
}
}
#ifndef DISABLE_MEDIAS
if (!strcmp(fs, "nfs"))
opts = "nolock";
if (!strcmp(fs, "vfat"))
opts = "check=relaxed";
#endif
char *cmd;
rc = asprintf(&cmd, "mount %s %s -t %s -o %s%s > /dev/null 2>&1", dev, location, fs, (force_rw ? "" : "ro,"), (opts ? opts : ""));
if (rc == -1) {
log_perror("asprint allocation failure");
rmdir(location);
return rc;
}
rc = system(cmd);
if (rc != 0) {
log_perror("mount failed");
rmdir(location);
}
return rc;
}
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