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/* Autopartkit -- debian-edu -- customized version of autopartkit
from debian-installer.
Author: Tollef Fog Heen <tollef@add.no>
Copyright (C) 2002 Tollef Fog Heen <tollef@add.no>
Like autopartkit, the modifications are under the GPL (see under).
*/
/*
autopartkit.c - Module to partition devices for debian-installer.
Author - Raphaël Hertzog
Copyright (C) 2001 Logidée (http://www.logidee.com)
Copyright (C) 2001 Raphaël Hertzog <hertzog@debian.org>
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; either version 2 of the License, or
(at your option) any later version.
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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* Here's the global algorithm used by autopartkit :
*
* 1. Detect available disks.
*
* 2. Choose all disks:
* - automatic if there's only a single disk
* - from the list of available disk if more than one disk is available
* Provide enough info on the disks to do an informed choice :
* Device | Model | Size | NbPart | FreeSpace | Space in FAT
* -------------------------------------------------------------------
* /dev/hda | IBM... | 30G | 1 | 0M | 25G
* /dev/hdb | Maxtor... | 12G | 6 | 5G | 3G
* - by asking the device name to the user if no disk was found
*
* We clear the disks, so we don't need to worry about free space.
*
* 3. Build a list of all the disks we have and allocate optimal
* amounts to the different partitions. Also, check whether we are
* doing a server or workstation installation.
*
* 4. load the requested partition sizes from /etc/autopartkit/
*
* Look at how much space we've got and try to maximize all the partitions.
*
* 6. Create the required partitions in the free space, mount them
* on /target and write the entries in /target/etc/fstab.
*
*/
#include "config.h"
#define _GNU_SOURCE /* To enable vasprintf() */
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <parted/parted.h>
#include <debian-installer/system/devfs.h>
#if defined(TEST)
#include "dummydebconfclient.h"
#else /* not TEST */
#include <cdebconf/debconfclient.h>
#endif /* not TEST */
#include <sys/mount.h>
#include <sys/swap.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <errno.h>
#include <syslog.h>
#include <assert.h>
#include "autopartkit.h"
/*
* How much of the "excess" LVM space should be spent on the LVM
* logical volumes. This accounts for LVM overhead, and make sure
* some VG space is available for later use.
*/
#define LVM_SPEND_FACTOR (0.5)
#define FAT_MINSIZE_FACTOR 1.33
#define MAX_PARTITIONS 30
#define PART_SIZE_BYTE(device, part) ((part)->geom.length * (device)->sector_size)
#define NBSP 160
/* Write /etc/windows_part?
#define WRITE_WINDOWS_PART
*/
/* Ignore devfs devices, used in choose_dev */
#define IGNORE_DEVFS_DEVICES 1
#if 1
#define log_line() \
autopartkit_log(2, " Error bounding: %s %d\n",__FILE__,__LINE__)
#else
#define log_line()
#endif
#include "parted-compat.h"
static struct debconfclient *client;
typedef struct _DeviceStats DeviceStats;
struct _DeviceStats {
int nb_part;
int nb_fat_part;
int size;
int free_space;
int free_space_in_fat;
int max_contiguous_free_space;
int has_extended;
};
/* Pre-declarations */
static const char* mydebconf_input(char*, char*);
static PedDevice* choose_device(void);
static void fix_mounting(device_mntpoint_map_t mountmap[], int partcount);
#if defined(fordebian)
static DeviceStats* get_device_stats(PedDevice*);
#endif /* fordebian */
#if defined(HAVE_PED_DISK_COMMIT)
static void autopartkit_handle_timer(PedTimer* timer, void* context);
#endif
#if defined(HAVE_PED_DISK_COMMIT)
/* update the debconf progress bar when given notice by autopartkit */
/* No longer used after rewrite to use /sbin/mkfs.*. [pere 2005-03-19] */
static void
autopartkit_handle_timer(PedTimer* timer, void* context ATTRIBUTE_UNUSED)
{
int minutes_left = (timer->predicted_end - timer->now) / 60;
char hours[16], minutes[16];
char *template;
if (minutes_left < 1) {
template = "autopartkit/createfs-estimate-lessthanaminute";
} else if (minutes_left < 60) {
template = "autopartkit/createfs-estimate-nohour";
} else {
template = "autopartkit/createfs-estimate";
}
sprintf(hours, "%u", minutes_left / 60);
sprintf(minutes, "%u", minutes_left % 60);
debconf_subst(client, template, "HOURS", hours);
debconf_subst(client, template, "MINUTES", minutes);
debconf_progress_info(client, template);
debconf_progress_set(client, (int)(timer->frac * 1000.0f));
}
#endif
void
autopartkit_error (int isfatal, const char * format, ...)
{
const char *template = "autopartkit/error";
char *msg = NULL;
va_list ap;
va_start(ap, format);
if (-1 == vasprintf(&msg, format, ap))
{
/* fatal error */
exit(EXIT_FAILURE);
}
va_end(ap);
autopartkit_log(1, "error: %d, %s\n", isfatal, msg);
debconf_fset(client, template, "seen", "false");
debconf_subst(client, template, "error", msg);
debconf_input(client, "high", template);
debconf_go(client);
if (msg)
free(msg);
if (isfatal)
exit (isfatal);
}
static const char * mydebconf_input (char *priority, char *template)
{
debconf_fset (client, template, "seen", "false");
debconf_input (client, priority, template);
debconf_go (client);
debconf_get (client, template);
return client->value;
}
void autopartkit_log(const int level, const char * format, ...)
{
int LOGLIMIT = 1;
va_list ap;
if (level > LOGLIMIT)
return;
openlog("autopartkit", LOG_PID, LOG_USER);
va_start(ap, format);
vsyslog(LOG_DEBUG, format, ap);
va_end(ap);
}
/* note: only fsets seen=true if the user answered yes */
static void autopartkit_confirm(void)
{
const char *template = "autopartkit/confirm";
debconf_input (client, "critical", template);
debconf_go (client);
debconf_get (client, template);
if (strstr(client->value, "true"))
return;
else
{
/* Make sure the question is displayed the next time too */
debconf_fset (client, template, "seen", "false");
exit(EXIT_FAILURE);
}
}
static void disable_kmsg(int disable)
{
static char level[64];
FILE* printk;
if (disable)
{
int read;
printk = fopen("/proc/sys/kernel/printk", "r");
if (! printk)
{
autopartkit_error(0, "Could not read from /proc/sys/kernel/printk");
return;
}
read = fread(level, 1, 63, printk);
level[read] = '\0';
fclose(printk);
printk = fopen("/proc/sys/kernel/printk", "w");
if (! printk)
{
autopartkit_error(0, "Could not write to /proc/sys/kernel/printk");
return;
}
fprintf(printk, "0\n");
fclose(printk);
} else {
printk = fopen("/proc/sys/kernel/printk", "w");
if (! printk)
{
autopartkit_error(0, "Could not write to /proc/sys/kernel/printk");
return;
}
fprintf(printk, "%s", level);
fclose(printk);
}
}
/**
* Return a string representing the defalt partition type for the
* current hardware
*/
static const char *
default_disk_label(void)
{
/* Need to define on a per arch basis */
#if defined(__i386__)
return "msdos";
#elif defined(ia64)
return "GPT";
#elif defined(hppa)
return"msdos";
#elif defined(__sparc__)
return "sun";
#elif defined(__mips__) && defined(__MIPSEL__)
return"msdos";
#elif defined(__mips__) && defined(__MIPSEB__)
/* Only supported in libparted 1.6.3? */
return "mips"; /* SGI disklabel */
#else /* not __i386__ */
# warning "Default DISK_LABEL is not known or not supported on this platform"
return "msdos";
#endif /* not __i386__ */
}
/**
* Report true if the mount point is /, and false if it isn't.
*/
static int is_root(const char *mountpoint)
{
return (0 == strcmp(mountpoint, "/") );
}
/*
* Step 1 & 2: Discover and select the device
*
* Probe the available device. Automatically select it, if one is
* available. Ask user input if none is detected.
*
*/
#if defined(fordebian)
#define TABLE_SIZE 2048
#define LIST_SIZE 512
#endif /* fordebian */
static PedDevice* choose_device(void)
{
PedDevice *dev = NULL;
const char *dev_name = NULL;
int nb_try = 0;
#if defined(fordebian)
char device_list[LIST_SIZE], default_device[128], table[TABLE_SIZE];
char *ptr_list, *ptr_table;
int num_devices = 0;
DeviceStats *stats;
#endif /* fordebian */
autopartkit_log( 1, "Trying to select device to partition\n");
disable_kmsg(1);
ped_device_probe_all();
disable_kmsg(0);
autopartkit_log( 1, "Checking each available device\n");
dev = my_ped_device_get_next_rw(NULL);
if (dev == NULL)
{
/* No devices detected */
while (dev == NULL)
{
dev_name = mydebconf_input("critical", "autopartkit/device_name");
disable_kmsg(1);
dev = ped_device_get(dev_name);
disable_kmsg(0);
if (++nb_try > 2) {
/* We didn't manage to choose a device */
break;
}
}
return dev;
}
autopartkit_log( 1, "Selected device %s\n", dev->path);
#if defined(fordebian)
default_device[0] = '\0';
device_list[0] = '\0';
ptr_list = device_list;
ptr_table = table;
for(; dev; dev = my_ped_device_get_next_rw(dev))
{
#ifdef IGNORE_DEVFS_DEVICES
if (strstr(dev->path, "dev/ide/") || strstr(dev->path, "dev/scsi/")) {
autopartkit_log( 1, "Skipping devfs device %s\n", dev->path);
continue;
}
#endif
++num_devices;
stats = get_device_stats(dev);
/*
* This is the right way to do unfortunately I want insecable
* space to override autowrap of debconf ...
ptr_table += snprintf(ptr_table, TABLE_SIZE + table - ptr_table,
"%-10s%-20s%05dM %05dM %05dM %-d\n .\n ", dev->path,
dev->model, stats->size, stats->free_space,
stats->free_space_in_fat, stats->nb_part);
*/
ptr_table += snprintf(ptr_table, TABLE_SIZE + table - ptr_table,
"%s", dev->path);
log_line();
if (10 > strlen(dev->path))
{
memset(ptr_table, NBSP, 10 - strlen(dev->path));
ptr_table += 10 - strlen(dev->path);
}
ptr_table += snprintf(ptr_table, TABLE_SIZE + table - ptr_table,
"%s", dev->model);
if (20 > strlen(dev->model))
{
memset(ptr_table, NBSP, 20 - strlen(dev->model));
ptr_table += 20 - strlen(dev->model);
}
ptr_table += snprintf(ptr_table, TABLE_SIZE + table - ptr_table,
"%05dM%c%05dM%c%05dM%c%c%-d\n",
stats->size, NBSP, stats->free_space, NBSP,
stats->free_space_in_fat, NBSP, NBSP, stats->nb_part);
if (strlen(device_list))
{
ptr_list += snprintf(ptr_list, LIST_SIZE + device_list - ptr_list,
", %s", dev->path);
} else {
ptr_list += snprintf(ptr_list, LIST_SIZE + device_list - ptr_list,
"%s", dev->path);
}
if (! strlen(default_device))
{
strncpy(default_device, dev->path, 128);
}
free(stats);
}
log_line();
if (num_devices == 1)
{
/* There's only a single usable device detected */
return ped_device_get(default_device);
}
log_line();
dev = NULL;
nb_try = 0;
while (dev == NULL)
{
const char *template = "autopartkit/choose_device";
const char *value;
debconf_fget(client, template, "seen");
if (strcmp(client->value, "false") == 0)
debconf_set(client, template, default_device);
debconf_subst(client, template, "CHOICES", device_list);
debconf_subst(client, template, "TABLE", table);
value = mydebconf_input("critical", template);
disable_kmsg(1);
dev = ped_device_get(value);
disable_kmsg(0);
if (++nb_try > 3)
break;
}
#endif /* fordebian */
/* Return the first device */
return dev;
}
static const char *
linux_fstype_to_parted(const char *linux_fstype)
{
if (strcmp(linux_fstype,"swap") == 0)
return "linux-swap";
#if defined(LVM_HACK)
if (strcmp(linux_fstype,"lvm") == 0)
/* Creating with any FS/partition type and converting to LVM below */
return "linux-swap"; /* Use any format that is fast to create. */
#endif /* LVM_HACK */
/* These file systems are not supported by libparted. create ext2
and recreate with the correct file system later. Can't create
swap here, as the partition table code would be wrong. */
if (strcmp(linux_fstype,"ext3") == 0)
return "ext2";
if (strcmp(linux_fstype,"xfs") == 0)
return "ext2";
if (strcmp(linux_fstype,"jfs") == 0)
return "ext2";
if (strcmp(linux_fstype,"reiserfs") == 0)
return "ext2";
return linux_fstype; /* Pass through everything we don't understand */
}
#if defined(fordebian)
/*
* Returns a malloced block of stats concerning the indicated device.
*
*/
static DeviceStats* get_device_stats(PedDevice* dev)
{
DeviceStats *stats;
PedDisk *disk;
PedPartition *part;
const PedFileSystemType *fs_type;
PedFileSystem *fs;
PedConstraint *constraint;
if (! dev)
return NULL;
stats = malloc(sizeof(DeviceStats));
if (stats == NULL)
return NULL;
stats->nb_part = 0;
stats->nb_fat_part = 0;
stats->size = 0;
stats->free_space = 0;
stats->free_space_in_fat = 0;
stats->max_contiguous_free_space = 0;
stats->has_extended = 0;
stats->size = (PedSector) ((dev->length * dev->sector_size) / MEGABYTE);
disk = ped_disk_new(dev);
if (! disk)
{
/* There's no partition table */
stats->free_space = stats->size;
stats->max_contiguous_free_space = stats->size;
return stats;
}
for(part = ped_disk_next_partition(disk, NULL); part;
part = ped_disk_next_partition(disk, part))
{
if (part->type == PED_PARTITION_EXTENDED)
{
stats->has_extended = 1;
continue;
}
if (part->type == PED_PARTITION_FREESPACE)
{
PedSector space = (PedSector)(PART_SIZE_BYTE(dev, part) / MEGABYTE);
if (space > stats->max_contiguous_free_space)
stats->max_contiguous_free_space = space;
stats->free_space += space;
continue;
}
if (part->type == PED_PARTITION_PRIMARY ||
part->type == PED_PARTITION_LOGICAL)
{
stats->nb_part++;
fs_type = part->fs_type;
if (! fs_type)
fs_type = ped_file_system_probe(&(part->geom));
if (! fs_type)
{
/* Unknown fs type on partition, ignore partition */
continue;
}
/* I hope to catch all FAT* partitions with that */
if (strstr(fs_type->name, "fat") || strstr(fs_type->name, "FAT"))
{
stats->nb_fat_part++;
fs = ped_file_system_open(&(part->geom));
if (! fs)
continue;
constraint = ped_file_system_get_resize_constraint(
(const PedFileSystem*) fs);
if (! constraint)
continue;
/* Only consider as free_space the space that is left when
* we take min_size + 33% since we want 25% free on the
* resized fat partitition.
* FIXME: empty fat partition will be resized to zero-sized
* partition, detect those and resize them to a half or a
* third instead */
if (part->geom.length > (PedSector) (constraint->min_size *
FAT_MINSIZE_FACTOR))
{
stats->free_space_in_fat += ((part->geom.length -
(PedSector) (constraint->min_size * FAT_MINSIZE_FACTOR))
* dev->sector_size) / MEGABYTE;
}
ped_file_system_close(fs);
#ifdef WRITE_WINDOWS_PART
/* Check if it's a windows bootable partition */
if (ped_partition_is_flag_available(part, boot_flag) &&
ped_partition_get_flag(part, boot_flag))
{
winpart = fopen("/etc/windows_part", "w");
fprintf(winpart, "%s%d", dev->path, part->num);
fclose(winpart);
}
#endif /* WRITE_WINDOWS_PART */
}
}
}
ped_disk_destroy(disk);
return stats;
}
/*
* Shrink all FAT partitions in order to free space.
*
*/
static int shrink_fat_partitions(PedDisk *disk)
{
PedPartition *part;
PedFileSystem *fs;
PedFileSystemType *fs_type = NULL;
PedConstraint *constraint;
/* Iterate over all FAT partitions and resize them */
for(part = ped_disk_next_partition(disk, NULL); part;
part = ped_disk_next_partition(disk, part))
{
if (part->type != PED_PARTITION_LOGICAL)
continue;
fs_type = (PedFileSystemType*) part->fs_type;
if (! fs_type)
fs_type = ped_file_system_probe(&part->geom);
if (! fs_type)
continue;
if (strstr(fs_type->name, "fat") || strstr(fs_type->name, "FAT"))
{
fs = ped_file_system_open(&part->geom);
if (! fs)
continue;
constraint = ped_file_system_get_resize_constraint(
(const PedFileSystem*) fs);
/* Well, we can use a timer feature of file_system_resize, but now
* it's NULL
*/
if ((! ped_disk_set_partition_geom(disk, part, constraint,
part->geom.start, part->geom.start +
(PedSector)(constraint->min_size * FAT_MINSIZE_FACTOR)))
||
(! ped_file_system_resize(fs, &part->geom, NULL))
)
{
autopartkit_error(0, "Error while resizing a FAT partition.");
ped_file_system_close(fs);
ped_constraint_destroy(constraint);
return 0;
}
ped_file_system_close (fs);
ped_partition_set_system (part, fs_type);
}
}
ped_disk_commit(disk);
return 1;
}
#endif /* fordebian */
static char*
find_partition_by_mountpoint(device_mntpoint_map_t *mountmap,
char *mountpoint)
{
int i;
for (i = 0; i < MAX_PARTITIONS; i++)
{
if (mountmap[i].mountpoint == NULL)
return NULL;
if (strcmp(mountmap[i].mountpoint->mountpoint,mountpoint) == 0)
{
return mountmap[i].devpath;
}
}
return NULL;
}
/* Sort diskspace_req_t array by minsize */
static int
dr_minsize_compare(const void *ap, const void *bp)
{
const diskspace_req_t *a = (const diskspace_req_t *)ap;
const diskspace_req_t *b = (const diskspace_req_t *)bp;
return b->minsize - a->minsize;
}
/*
* Copies requirements while making sure the root (/) is the first
* entry in the table, and that minsize is smaller or equal to
* maxsize. It will also translate fstype "default" to the current
* default file system type.
*/
static void
normalize_requirements(diskspace_req_t *dest, const diskspace_req_t *source,
const size_t dest_capacity)
{
int i;
int count;
memset(dest,0,sizeof(diskspace_req_t)*dest_capacity);
for (count = 0; source[count].mountpoint != NULL; count++)
{
memcpy(&dest[count], &source[count], sizeof(dest[0]));
dest[count].mountpoint = strdup(source[count].mountpoint);
if (strcmp(source[count].fstype,"default") == 0)
dest[count].fstype = strdup(DEFAULT_FS);
else
dest[count].fstype = strdup(source[count].fstype);
/* Make sure minsize <= maxsize, unless maxsize == -1 (unlimited) */
if (-1 != dest[count].maxsize)
{
if (dest[count].minsize > dest[count].maxsize)
dest[count].maxsize = dest[count].minsize;
if (dest[count].maxsize < dest[count].minsize)
dest[count].minsize = dest[count].maxsize;
}
}
if ( ! is_root(dest[0].mountpoint) )
{ /* Move root to the first position (dest[0]) */
for (i = 0; dest[i].mountpoint != NULL; i++)
if ( is_root(dest[i].mountpoint) )
{
/* swap the entries */
diskspace_req_t tmp;
memcpy(&tmp, &dest[0], sizeof(tmp));
memcpy(&dest[0], &dest[i], sizeof(tmp));
memcpy(&dest[i], &tmp, sizeof(tmp));
}
}
/* Sort the rest by minsize, the largest first */
qsort(&dest[1], count - 1, sizeof(dest[0]), dr_minsize_compare);
}
/*
* This hurts my heart, but libparted seems to have some design
* issues, and it is _impossible_ to get the path of a partition
* without guessing like this. That sucks. :(
*
* Example paths:
* /dev/rd/disc0/disc
* /dev/ide/host0/bus0/target0/lun0/disc
*
* In parted v1.6.1 we can use ped_partition_get_path(freepart);
*/
static char *get_device_path(PedDevice *dev, PedPartition *freepart)
{
#if defined(HAVE_PED_PARTITION_GET_PATH)
(void) dev;
return ped_partition_get_path(freepart);
#else /* not HAVE_PED_PARTITION_GET_PATH */
char *retval;
char *tmp;
size_t slen;
asprintf(&retval, "%s%d", dev->path, freepart->num);
slen = strlen(dev->path);
tmp = retval + slen - 5; /* 5 is the length of "/disc" */
printf("tmp=%s\n", tmp);
/* Replace '/disc' at the end with 'part'. It sucks having to do
it this way. */
if (0 == strncmp("/disc", tmp, 5))
{
tmp[1] = 'p';
tmp[2] = 'a';
tmp[3] = 'r';
tmp[4] = 't';
}
return retval;
#endif /* not HAVE_PED_PARTITION_GET_PATH */
}
/*
* Make mounting points, and mount the newly created filesystems.
* Create fstab in /target/fstab.
*/
static void
fix_mounting(device_mntpoint_map_t mountmap[], int partcount)
{
static char buf[256];
const char *rootpath;
int i;
/* Mount partitions and write fstab */
if (0 != mkdir("/target", 0755))
autopartkit_error(1, "Unable to mkdir /target: %s", strerror(errno));
/* Find and mount the root fs */
rootpath = find_partition_by_mountpoint(mountmap,"/");
if (di_system_devfs_map_from(rootpath, buf, sizeof(buf)))
autopartkit_log(1, "device for /: %s\n", buf);
else
autopartkit_error(0, "Unable to devfs-map device for /: %s\n", rootpath);
/* FIXME Should use fstype for /, not DEFAULT_FS */
if (mount(find_partition_by_mountpoint(mountmap,"/"),
"/target", DEFAULT_FS, MS_MGC_VAL, NULL) == -1)
autopartkit_error(1,
"Unable to mount '%s' on '/target' as fstype '%s': %s",
find_partition_by_mountpoint(mountmap,"/"),
DEFAULT_FS, strerror(errno));
log_line();
/* Find and turn on swap */
{
char *partition = find_partition_by_mountpoint(mountmap,"swap");
if (partition)
{
disable_kmsg(1);
swapon(partition, 0);
disable_kmsg(0);
}
else
autopartkit_log(0, "No swap partition available!\n");
}
log_line();
/* Are these really needed? Who will create them if they are missing? */
if (0 != mkdir("/target/floppy", 0755))
autopartkit_error(1, "Unable to mkdir /target/floppy: %s",
strerror(errno));
if (0 != mkdir("/target/cdrom", 0755))
autopartkit_error(1, "Unable to mkdir /target/cdrom: %s",
strerror(errno));
for (i = 0; i < partcount; i++)
{
char *tmpmnt;
if ( is_root(mountmap[i].mountpoint->mountpoint)
#if defined(LVM_HACK)
|| (strcmp(mountmap[i].mountpoint->fstype,"lvm") == 0)
#endif /* LVM_HACK */
|| (strcmp(mountmap[i].mountpoint->fstype,"swap") == 0))
{
continue;
}
autopartkit_log( 1, "Mounting %s on %s as fs %s.\n",
mountmap[i].devpath ? mountmap[i].devpath : "[null]",
( mountmap[i].mountpoint->mountpoint ?
mountmap[i].mountpoint->mountpoint : "[null]" ),
mountmap[i].mountpoint->fstype);
asprintf(&tmpmnt, "/target%s", mountmap[i].mountpoint->mountpoint);
make_path(tmpmnt, 0755);
if (mount(mountmap[i].devpath, tmpmnt, mountmap[i].mountpoint->fstype,
MS_MGC_VAL, NULL) == -1)
autopartkit_error(1,
"Unable to mount '%s' on '%s' as fstype '%s': %s",
mountmap[i].devpath, tmpmnt,
mountmap[i].mountpoint->fstype,
strerror(errno));
free(tmpmnt);
}
/* Make sure /tmp got sticky bit. It must be changed on the
mounted device after it is mounted. */
chmod("/target/tmp", 01777);
}
/*
* Remove all partitions on all detected disks.
* FIXME: Do not work with libparted 1.6
*/
static void
nuke_all_partitions(void)
{
PedDevice *dev;
/* Loop over all devices, and nuke the partition table on each one. */
dev = my_ped_device_get_next_rw(NULL);
do {
PedDisk *p;
p = ped_disk_new_fresh(dev, ped_disk_type_get(default_disk_label()));
#if defined(HAVE_PED_DISK_COMMIT) /* libparted 1.6 */
ped_disk_commit(p);
#endif
ped_disk_destroy(p);
dev = my_ped_device_get_next_rw(dev);
} while (dev != NULL);
}
/*
* Zero out the start of a device, filling 'length' bytes with
* 0-bytes. This is used to remove old headers from LVM partitions.
*/
static int
zero_dev(const char *devpath, unsigned int length)
{
FILE *fp = fopen(devpath, "w");
char buf[10240]; /* 10 KiB blocks */
unsigned int i;
if (!fp)
return -1;
memset(buf, 0, sizeof(buf));
for (i = 0; i < length; )
{
unsigned int size = length - i;
if (size > sizeof(buf))
size = sizeof(buf);
fwrite(buf, size, 1, fp);
i += size;
}
fclose(fp);
return 0;
}
/*
* Create a filesystem on the device pointed to by devpath.
*/
static int
makefs(const char *devpath, const char *fstype)
{
char *mkfs;
int retval;
char *cmd = NULL;
assert(devpath);
assert(fstype);
/* Create filesystem */
/* Do it like this for now */
if (0 == strcmp("swap", fstype))
mkfs = "/sbin/mkswap";
/* XXX This should accept any fstype string, and just use
/sbin/mkfs.<fstype> if it exist. */
else if (0 == strcmp("ext2", fstype))
mkfs = "/sbin/mkfs.ext2";
else if (0 == strcmp("ext3", fstype))
mkfs = "/sbin/mkfs.ext3 -O resize_inode";
else if (0 == strcmp("jfs", fstype))
mkfs = "/sbin/mkfs.jfs";
else if (0 == strcmp("xfs", fstype))
mkfs = "/sbin/mkfs.xfs";
else if (0 == strcmp("reiserfs", fstype))
mkfs = "/sbin/mkfs.reiserfs";
else /* Any default fs will have to do for now */
{
autopartkit_log(1, " Unknown fs '%s' for dev '%s'\n", fstype,devpath);
return -1;
}
retval = asprintf(&cmd, "log-output -t autopartkit %s %s", mkfs, devpath);
if (-1 != retval)
{
autopartkit_log(1, "Running command: %s\n", cmd);
retval = system(cmd);
free(cmd);
if (0 != retval)
autopartkit_error(1, " Failed to create '%s' fs on '%s'",
fstype, devpath);
else
return 0;
}
else
autopartkit_error(1, "Unable to allocate memory for mkfs call");
return -1;
}
/*
* Create all the partitions on the disk
*
*/
static void
make_partitions(const diskspace_req_t *space_reqs, PedDevice *devlist)
{
int ret;
int partnum;
PedPartition *newpart = NULL;
PedConstraint *any;
PedFileSystemType *fs_type = NULL;
PedDevice *dev_tmp = NULL;
PedDisk *disk_tmp = NULL, *disk_maybe = NULL;
device_mntpoint_map_t mountmap[MAX_PARTITIONS];
diskspace_req_t requirements[MAX_PARTITIONS], *req_tmp = NULL;
int partcount = 0;
struct disk_info_t *spaceinfo = NULL;
#if defined(HAVE_PED_DISK_COMMIT)
PedTimer *timer = NULL;
#endif /* HAVE_PED_DISK_COMMIT */
#if defined(LVM_HACK)
void *lvm_pv_stack;
void *lvm_lv_stack;
void *lvm_vg_stack;
#endif /* LVM_HACK */
memset(mountmap,0,sizeof(device_mntpoint_map_t)*MAX_PARTITIONS);
normalize_requirements(requirements, space_reqs, MAX_PARTITIONS);
#if defined(LVM_HACK)
lvm_pv_stack = lvm_pv_stack_new();
lvm_lv_stack = lvm_lv_stack_new();
autopartkit_log(1, "Created LVM stacks\n");
/* Do not make LVM logical volumes on the disk */
for (partnum = 0; partnum < MAX_PARTITIONS && requirements[partnum].fstype;
++partnum)
if ( 0 == strncmp("lvm:", requirements[partnum].fstype, 4) )
requirements[partnum].ondisk = 0;
#endif /* LVM_HACK */
spaceinfo = get_free_space_list();
if ( ! spaceinfo )
/* fatal error */
autopartkit_error (1," Unable to find any free space\n");
autopartkit_log(1, "Found free space, distributing partitions.\n");
ret = distribute_partitions(spaceinfo, requirements);
if (ret)
autopartkit_error(1, "partitioning failed, retval=%d\n", ret);
else
{
autopartkit_log(1, "distribute_partition ok.\n");
print_list(spaceinfo, requirements);
}
/*
* The root ('/') will be the first partition in this list after the
* call to normalize_requirements().
*/
for (partnum = 0; partnum < MAX_PARTITIONS && requirements[partnum].fstype;
++partnum)
{
req_tmp = &requirements[partnum];
autopartkit_log(1, "Making '%s', using %d MiB, minsize=%d\n",
req_tmp->mountpoint,
(int)BLOCKS_TO_MiB(req_tmp->blocks),
(int)req_tmp->minsize);
if (req_tmp->minsize == -1)
break;
assert(req_tmp->fstype);
{ /* Look up the file system type with libparted. */
const char *parted_fs = linux_fstype_to_parted(req_tmp->fstype);
assert(parted_fs);
fs_type = ped_file_system_type_get(parted_fs);
}
autopartkit_log(1, " mountpoint: %s fstype %s\n", req_tmp->mountpoint,
req_tmp->fstype);
if (NULL == fs_type)
{
char *devpath = NULL;
autopartkit_log(1, " fstype '%s' not handle by libparted.\n",
req_tmp->fstype);
#if defined(LVM_HACK)
if ( 0 == strncmp("lvm:", req_tmp->fstype, 4) )
devpath = lvm_lv_add(lvm_lv_stack, req_tmp->fstype,
req_tmp->minsize, req_tmp->maxsize);
else
#endif /* LVM_HACK */
{
autopartkit_log(1, " Passing it directly to fstab.\n");
devpath = strdup("none");
}
/* Add to fstab */
mountmap[partcount].devpath = devpath;
}
else
{
int isroot = 0;
PedSector endsector;
assert(req_tmp->curdisk); /* XXX fails for shmfs, ie ->nodisk */
autopartkit_log(1, " device path '%s' [%lld-%lld]\n",
req_tmp->curdisk->path,
req_tmp->curdisk->geom.start,
req_tmp->curdisk->geom.end);
dev_tmp = ped_device_get(req_tmp->curdisk->path);
assert(dev_tmp);
disk_maybe = ped_disk_new(dev_tmp);
autopartkit_log(1, " creating in free area %lld-%lld\n",
req_tmp->curdisk->geom.start,
req_tmp->curdisk->geom.end);
autopartkit_log(1, " Creating partition on disk having "
"sectors %lld\n", disk_maybe->dev->length);
any = PED_CONSTRAINT_ANY(disk_maybe, disk_maybe->dev);
autopartkit_log(1, " Trying to create part on %lld-%lld\n",
req_tmp->curdisk->geom.start,
req_tmp->curdisk->geom.end);
isroot = is_root(req_tmp->mountpoint);
if (!isroot && !ped_disk_extended_partition(disk_maybe))
{
PedPartition *ext_part;
autopartkit_log(1, " **Creating extended partition: %lld %lld\n",
req_tmp->curdisk->geom.start,
req_tmp->curdisk->geom.end);
/* Create extended partition filling the complete free
space area. */
ext_part = ped_partition_new(disk_maybe,
PED_PARTITION_EXTENDED,
fs_type,
req_tmp->curdisk->geom.start,
req_tmp->curdisk->geom.end);
ret = ped_disk_add_partition(disk_maybe, ext_part, any);
if ( 0 == ret)
/* fatal error */
autopartkit_error (1, " ped_disk_add_partition failed\n");
ped_disk_maximize_partition(disk_maybe, ext_part, any);
}
/* blocks -1 because the start and end numbers are inclusive */
endsector = req_tmp->curdisk->geom.start + req_tmp->blocks - 1;
/* Make sure we stay inside the free space geometry */
if (endsector > req_tmp->curdisk->geom.end)
{
autopartkit_log(1, " end sector value %lld to large, "
"trunkating to %lld\n",
endsector, req_tmp->curdisk->geom.end);
endsector = req_tmp->curdisk->geom.end;
}
autopartkit_log(1, " New partition from %lld to %lld\n",
req_tmp->curdisk->geom.start, endsector);
newpart = ped_partition_new( disk_maybe,
( isroot ? PED_PARTITION_PRIMARY
: PED_PARTITION_LOGICAL ),
fs_type,
req_tmp->curdisk->geom.start,
endsector );
if (isroot && ped_partition_is_flag_available(newpart,
PED_PARTITION_BOOT))
ped_partition_set_flag(newpart,PED_PARTITION_BOOT,1);
ret = ped_disk_add_partition(disk_maybe, newpart, any);
mountmap[partcount].devpath =
get_device_path(disk_maybe->dev, newpart);
autopartkit_log(1, " ped_disk_add_partition: %d\n", ret);
if (0 != ret)
{
/* Mark the used area as occupied in the common struct. */
req_tmp->curdisk->geom.length -=
newpart->geom.end - newpart->geom.start; /* is this needed?*/
req_tmp->curdisk->geom.start = newpart->geom.end + 1;
/*
* We must commit before creating file system to make
* sure the device file is available when we need it.
*/
ped_disk_commit(disk_maybe);
system("update-dev"); /* persuade the kernel to create the device */
makefs(mountmap[partcount].devpath, req_tmp->fstype);
}
else
{
/* fatal error */
autopartkit_error (1," ped_disk_add_partition failed\n");
}
ped_constraint_destroy(any);
#if defined(LVM_HACK)
/*
* It is currently not possible to create LVM partitions,
* but it is possible to create an partition with another
* filesystem, and then change the partition type to LVM.
*/
if (strcmp(req_tmp->fstype,"lvm") == 0)
{
const char *devpath;
autopartkit_log(1, " converting partition type to LVM\n");
ped_partition_set_flag(newpart,PED_PARTITION_LVM,1);
devpath = mountmap[partcount].devpath;
/* We must commit before calling lvm_init_dev() to
make sure the device file is available when we need
it. */
ped_disk_commit(disk_maybe);
system("update-dev"); /* persuade the kernel to create the device */
lvm_pv_stack_push(lvm_pv_stack, req_tmp->mountpoint, devpath);
}
else
#endif /* LVM_HACK */
{
/* disable_kmsg(1); */
log_line();
/* disable_kmsg(0); */
ped_disk_commit(disk_maybe);
}
}
mountmap[partcount].mountpoint = req_tmp;
autopartkit_log( 1, " mp: %s dev: %s\n",
req_tmp->mountpoint,
mountmap[partcount].devpath);
newpart = NULL;
/* req_tmp->minsize = -1; */ /* Why? */
partcount++;
}
/* Workaround for stupid bug in libparted. It closes the device as well
as the disk when ped_disk_close is called. This means that the
device is in an unknown state when we return from this function, or
rather, it is closed when returning. This is _bad_. */
for (dev_tmp = devlist; dev_tmp;
dev_tmp = my_ped_device_get_next_rw(dev_tmp))
{
log_line();
disk_tmp = ped_disk_new(dev_tmp);
log_line();
ret = ped_disk_commit(disk_tmp);
log_line();
autopartkit_log(1, "ped_disk_commit(disk_tmp) = %d\n",ret);
ped_disk_destroy(disk_tmp);
log_line();
}
/* Finish the work */
disable_kmsg(1);
/* Close libparted, needs to do it here just to let the kernel
* know of the new partition table so that mounts call actually work
*/
PED_DONE();
disable_kmsg(0);
free(spaceinfo);
#if defined(LVM_HACK)
/* Initialize LVM partitions and volumes, if the LVM tools are available */
autopartkit_log(1, "Initializing LVM.\n");
while ( ! lvm_pv_stack_isempty(lvm_pv_stack) )
{
char *vgname;
char *devpath;
lvm_pv_stack_pop(lvm_pv_stack, &vgname, &devpath);
autopartkit_log(1, " Init LVM pv name %s, devpath=%s\n",
vgname, devpath);
/*
* Zero out old LVM headers if present. Is 100 KiB a good
* value?
*/
zero_dev(devpath, 100 * 1024);
if ( 0 == lvm_init_dev(devpath) )
{
autopartkit_log(1, " lvm_init_dev(%s) successful.\n", devpath);
lvm_volumegroup_add_dev(vgname, devpath);
}
else
autopartkit_log(1, " lvm_init_dev(%s) failed.\n", devpath);
free(vgname);
free(devpath);
}
system("update-dev"); /* persuade the kernel to create the devices */
/* Distribute logical volumes (andread@linpro.no) */
lvm_vg_stack = lvm_vg_stack_new();
/* Store vgnames on stack */
for (partnum = 0; partnum < MAX_PARTITIONS && requirements[partnum].fstype;
++partnum)
{
if ( 0 == strncmp("lvm\0", requirements[partnum].fstype, 4) ){
lvm_vg_stack_push(lvm_vg_stack, requirements[partnum].mountpoint);
}
}
/* Loop vg-stack, get disk_info and create request-array */
while ( ! lvm_vg_stack_isempty(lvm_vg_stack) ){
struct disk_info_t vg[2];
struct diskspace_req_s lvm_reqs[MAX_PARTITIONS];
int lvm_reqs_index = 0;
char *vgname;
lvm_vg_stack_pop(lvm_vg_stack, &vgname);
if ( ! lvm_get_free_space_list(vgname, &vg[0]) ){
printf("ERROR: No vg %s\n", vgname);
continue;
}
vg[1].capacity = 0;
/* loop requests... */
for (partnum = 0; partnum < MAX_PARTITIONS &&
requirements[partnum].fstype;
++partnum){
char *identmatch;
char *elements[4];
asprintf(&identmatch, "lvm:%s:", vgname);
if ( 0 == strncmp(identmatch, requirements[partnum].fstype,
strlen(identmatch) ) ) {
/* Insert into request array */
lvm_split_fstype(requirements[partnum].fstype, ':',
4, elements);
if (0 == strcmp("default", elements[3])) {
char *s = strdup(DEFAULT_FS);
assert(s);
free(elements[3]);
elements[3] = s;
}
lvm_reqs[lvm_reqs_index].mountpoint = elements[2];
lvm_reqs[lvm_reqs_index].ondisk = 1;
lvm_reqs[lvm_reqs_index].fstype = elements[3];
lvm_reqs[lvm_reqs_index].minsize =
requirements[partnum].minsize;
lvm_reqs[lvm_reqs_index].maxsize =
requirements[partnum].maxsize;
autopartkit_log(2, " LVM request array: %s, %d, %d\n",
lvm_reqs[lvm_reqs_index].mountpoint,
lvm_reqs[lvm_reqs_index].minsize,
lvm_reqs[lvm_reqs_index].maxsize);
lvm_reqs_index++;
}
free(identmatch);
}
lvm_reqs[lvm_reqs_index].mountpoint = NULL;
/* Reduce vg size by LVM_SPEND_FACTOR... */
autopartkit_log(1, "Vg %s - %d to use\n",
vg[0].path, vg[0].freespace);
autopartkit_log(1, "Reducing...\n");
reduce_disk_usage_size(&vg[0], lvm_reqs, LVM_SPEND_FACTOR);
autopartkit_log(1, "Vg %s - %d to use\n",
vg[0].path, vg[0].freespace);
/* Call distribute_partitions */
autopartkit_log(1, " LVM distribute_partitions...\n");
distribute_partitions(vg, lvm_reqs);
autopartkit_log(1, "Layout lits:\n");
print_list(vg, lvm_reqs);
/* Make logical volumes */
for (partnum = 0; partnum < 10 &&
lvm_reqs[partnum].mountpoint; ++partnum){
char *lvname;
int mbsize;
char *devpath = NULL;
char *fstype;
lvname = lvm_reqs[partnum].mountpoint;
mbsize = BLOCKS_TO_MiB(lvm_reqs[partnum].blocks);
fstype = lvm_reqs[partnum].fstype;
autopartkit_log(2, " LVM creating %s, %s, %d\n",
vgname, lvname, mbsize);
devpath = lvm_create_logicalvolume(vgname, lvname, mbsize);
if (NULL == devpath)
autopartkit_log(1, " LVM lv creation failed\n");
else
{
autopartkit_log(1, " LVM lv created ok, devpath=%s\n",
devpath);
autopartkit_log(1, " LVM creating fs: %s\n", fstype);
system("update-dev"); /* persuade the kernel to create the device */
if (0 == makefs(devpath, fstype))
{ /* Replace devpath placeholder with real path */
char buf[1024];
int i;
autopartkit_log(1, " FS '%s' created ok on '%s'",
fstype, devpath);
snprintf(buf, sizeof(buf), "%s:%s", vgname, lvname);
for (i = 0; i < partcount; i++)
if (0 == strcmp(buf, mountmap[i].devpath))
{
free(mountmap[i].devpath);
mountmap[i].mountpoint->fstype = strdup(fstype);
mountmap[i].devpath = devpath;
}
}
else
autopartkit_log(1, " FS creation failed");
}
}
}
autopartkit_log(1, "LVM done\n");
lvm_lv_stack_delete(lvm_lv_stack);
lvm_pv_stack_delete(lvm_pv_stack);
#endif /* LVM_HACK */
fix_mounting(mountmap, partcount);
log_line();
}
/*
* This exception handler is required to not let libparted write warnings
* on stdout and confuse cdebconf.
*
*/
static PedExceptionOption exception_handler (PedException* ex)
{
/* Ignore warnings and informational exceptions */
if (ex->type < PED_EXCEPTION_ERROR)
{
/* TODO: Indicate that it's only a warning */
autopartkit_error(0, ex->message);
return PED_EXCEPTION_IGNORE;
}
autopartkit_error(0, ex->message);
/* Really don't know what a good default is here */
return PED_EXCEPTION_CANCEL;
}
int main (int argc, char *argv[])
{
PedDevice *dev = NULL;
diskspace_req_t *disk_reqs = NULL;
const char *tablefile = NULL;
int retval = 1;
client = debconfclient_new ();
autopartkit_log(1, "Using '%s' default disk label type\n",
default_disk_label());
#if defined(LVM_HACK)
autopartkit_log(1, "Initializing LVM framework.\n");
if (0 != lvm_init())
autopartkit_log(1, "Unable to initialize LVM support. "
"Continuing anyway.\n");
#endif /* LVM_HACK */
disable_kmsg(1);
ped_exception_set_handler(exception_handler);
autopartkit_log(1, "Initializing libparted.\n");
PED_INIT();
disable_kmsg(0);
if (argc > 1)
#if defined(TEST)
tablefile = "default.table";
#else
tablefile = argv[1];
#endif /* TEST */
if ( ! tablefile )
autopartkit_error(1, "usage: %s <table file>\n", argv[0]);
disk_reqs = load_partitions(tablefile);
/* Step 1 & 2 : discover & choose device */
dev = choose_device();
if (! dev)
{
autopartkit_error(0, "Unable to find any hard drives to partition!");
goto end;
}
if (NULL == disk_reqs)
{
autopartkit_error(0, "Unable to load partition table '%s'.",
tablefile);
goto end;
}
else
{
autopartkit_log(2, "pre_confirm %d %d\n", 0,0);
autopartkit_confirm();
autopartkit_log(2, "post_confirm %d %d\n", 0,0);
nuke_all_partitions();
make_partitions(disk_reqs, dev);
free_partition_list(disk_reqs);
}
retval = 0;
end:
PED_DONE();
debconfclient_delete(client);
return retval;
}
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