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/*
* Guillaume Cottenceau (gc@mandrakesoft.com)
*
* Copyright 2000 MandrakeSoft
*
* 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
*
*/
#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 "modules.h"
#include "mount.h"
#ifndef DISABLE_MEDIAS
/* WARNING: this won't work if the argument is not /dev/ based */
int ensure_dev_exists(char *dev)
{
int major, minor;
int type = S_IFBLK; /* my default type is block. don't forget to change for chars */
char * name;
struct stat buf;
char * ptr;
name = &dev[5]; /* we really need that dev be passed as /dev/something.. */
if (!stat(dev, &buf))
return 0; /* if the file already exists, we assume it's correct */
if (ptr_begins_static_str(name, "sd")) {
/* SCSI disks */
major = 8;
minor = (name[2] - 'a') << 4;
if (name[3] && name[4])
minor += 10 + (name[4] - '0');
else if (name[3])
minor += (name[3] - '0');
} else if (ptr_begins_static_str(name, "hd")) {
/* IDE disks/cd's */
if (name[2] == 'a')
major = 3, minor = 0;
else if (name[2] == 'b')
major = 3, minor = 64;
else if (name[2] == 'c')
major = 22, minor = 0;
else if (name[2] == 'd')
major = 22, minor = 64;
else if (name[2] == 'e')
major = 33, minor = 0;
else if (name[2] == 'f')
major = 33, minor = 64;
else if (name[2] == 'g')
major = 34, minor = 0;
else if (name[2] == 'h')
major = 34, minor = 64;
else if (name[2] == 'i')
major = 56, minor = 0;
else if (name[2] == 'j')
major = 56, minor = 64;
else if (name[2] == 'k')
major = 57, minor = 0;
else if (name[2] == 'l')
major = 57, minor = 64;
else if (name[2] == 'm')
major = 88, minor = 0;
else if (name[2] == 'n')
major = 88, minor = 64;
else if (name[2] == 'o')
major = 89, minor = 0;
else if (name[2] == 'p')
major = 89, minor = 64;
else if (name[2] == 'q')
major = 90, minor = 0;
else if (name[2] == 'r')
major = 90, minor = 64;
else if (name[2] == 's')
major = 91, minor = 0;
else if (name[2] == 't')
major = 91, minor = 64;
else
return -1;
if (name[3] && name[4])
minor += 10 + (name[4] - '0');
else if (name[3])
minor += (name[3] - '0');
} else if (ptr_begins_static_str(name , "sr")) {
/* SCSI cd's */
major = 11;
minor = name[2] - '0';
} else if (ptr_begins_static_str(name, "ida/") ||
ptr_begins_static_str(name, "cciss/")) {
/* Compaq Smart Array "ida/c0d0{p1}" */
ptr = strchr(name, '/');
mkdir("/dev/ida", 0755);
mkdir("/dev/cciss", 0755);
major = ptr_begins_static_str(name, "ida/") ? 72 : 104 + charstar_to_int(ptr+2);
ptr = strchr(ptr, 'd');
minor = 16 * charstar_to_int(ptr+1);
ptr = strchr(ptr, 'p');
minor += charstar_to_int(ptr+1);
} else if (ptr_begins_static_str(name, "rd/")) {
/* DAC960 "rd/cXdXXpX" */
mkdir("/dev/rd", 0755);
major = 48 + charstar_to_int(name+4);
ptr = strchr(name+4, 'd');
minor = 8 * charstar_to_int(ptr+1);
ptr = strchr(ptr, 'p');
minor += charstar_to_int(ptr+1);
} else {
log_message("I don't know how to create device %s, please post bugreport to me!", dev);
return -1;
}
if (mknod(dev, type | 0600, makedev(major, minor))) {
log_perror(dev);
return -1;
}
return 0;
}
#endif /* DISABLE_MEDIAS */
/* mounts, creating the device if needed+possible */
int my_mount(char *dev, char *location, char *fs, int force_rw)
{
unsigned long flags = MS_MGC_VAL | (force_rw ? 0 : MS_RDONLY);
char * opts = NULL;
struct stat buf;
int rc;
#ifndef DISABLE_MEDIAS
if (strcmp(fs, "nfs")) {
rc = ensure_dev_exists(dev);
if (rc != 0) {
log_message("could not create required device file");
return -1;
}
}
#endif
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, "vfat")) {
my_insmod("vfat", ANY_DRIVER_TYPE, NULL);
opts = "check=relaxed";
}
if (!strcmp(fs, "reiserfs"))
my_insmod("reiserfs", ANY_DRIVER_TYPE, NULL);
if (!strcmp(fs, "iso9660"))
my_insmod("isofs", ANY_DRIVER_TYPE, NULL);
#endif
#ifndef DISABLE_NETWORK
if (!strcmp(fs, "nfs")) {
int flags = MS_RDONLY;
my_insmod("nfs", ANY_DRIVER_TYPE, NULL);
log_message("preparing nfsmount for %s", dev);
rc = nfsmount_prepare(dev, &flags, &opts);
if (rc != 0)
return rc;
}
#endif
rc = mount(dev, location, fs, flags, opts);
if (rc != 0) {
log_perror("mount failed");
rmdir(location);
}
return rc;
}
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