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author | Richard Jones <rjones@redhat.com> | 2010-09-08 11:00:00 +0100 |
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committer | Richard Jones <rjones@redhat.com> | 2010-09-08 11:00:00 +0100 |
commit | d5c8d3b45b9646a4ae9d4ea033e1cc13a6e25c1f (patch) | |
tree | 5a98c63031a12a13647019e2eca5190ce473febf /fish/prep_boot.c | |
parent | 574df371a0421b4b83386f43e5095ccea5069e5b (diff) | |
download | libguestfs-d5c8d3b45b9646a4ae9d4ea033e1cc13a6e25c1f.tar.gz libguestfs-d5c8d3b45b9646a4ae9d4ea033e1cc13a6e25c1f.tar.xz libguestfs-d5c8d3b45b9646a4ae9d4ea033e1cc13a6e25c1f.zip |
fish: Add guestfish -N bootroot and -N bootrootlv for creating boot+root disks.
Diffstat (limited to 'fish/prep_boot.c')
-rw-r--r-- | fish/prep_boot.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/fish/prep_boot.c b/fish/prep_boot.c new file mode 100644 index 00000000..e80f1ee5 --- /dev/null +++ b/fish/prep_boot.c @@ -0,0 +1,163 @@ +/* guestfish - the filesystem interactive shell + * Copyright (C) 2010 Red Hat 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; 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <unistd.h> + +#include "fish.h" +#include "prepopts.h" + +void +prep_prelaunch_bootroot (const char *filename, prep_data *data) +{ + if (alloc_disk (filename, data->params[2], 0, 1) == -1) + prep_error (data, filename, _("failed to allocate disk")); +} + +void +prep_postlaunch_bootroot (const char *filename, prep_data *data, const char *device) +{ + off_t bootsize; + if (parse_size (data->params[3], &bootsize) == -1) + prep_error (data, filename, _("could not parse boot size")); + + int sector = guestfs_blockdev_getss (g, device); + if (sector == -1) + prep_error (data, filename, _("failed to get sector size of disk: %s"), + guestfs_last_error (g)); + + if (guestfs_part_init (g, device, data->params[4]) == -1) + prep_error (data, filename, _("failed to partition disk: %s"), + guestfs_last_error (g)); + + off_t lastbootsect = 64 + bootsize/sector - 1; + if (guestfs_part_add (g, device, "primary", 64, lastbootsect) == -1) + prep_error (data, filename, _("failed to add boot partition: %s"), + guestfs_last_error (g)); + + if (guestfs_part_add (g, device, "primary", lastbootsect+1, -64) == -1) + prep_error (data, filename, _("failed to add root partition: %s"), + guestfs_last_error (g)); + + char *part; + if (asprintf (&part, "%s1", device) == -1) { + perror ("asprintf"); + exit (EXIT_FAILURE); + } + if (guestfs_mkfs (g, data->params[0], part) == -1) + prep_error (data, filename, _("failed to create boot filesystem: %s"), + guestfs_last_error (g)); + free (part); + + if (asprintf (&part, "%s2", device) == -1) { + perror ("asprintf"); + exit (EXIT_FAILURE); + } + if (guestfs_mkfs (g, data->params[1], part) == -1) + prep_error (data, filename, _("failed to create root filesystem: %s"), + guestfs_last_error (g)); + free (part); +} + +void +prep_prelaunch_bootrootlv (const char *filename, prep_data *data) +{ + if (vg_lv_parse (data->params[0], NULL, NULL) == -1) + prep_error (data, filename, _("incorrect format for LV name, use '/dev/VG/LV'")); + + if (alloc_disk (filename, data->params[3], 0, 1) == -1) + prep_error (data, filename, _("failed to allocate disk")); +} + +void +prep_postlaunch_bootrootlv (const char *filename, prep_data *data, const char *device) +{ + off_t bootsize; + if (parse_size (data->params[4], &bootsize) == -1) + prep_error (data, filename, _("could not parse boot size")); + + int sector = guestfs_blockdev_getss (g, device); + if (sector == -1) + prep_error (data, filename, _("failed to get sector size of disk: %s"), + guestfs_last_error (g)); + + if (guestfs_part_init (g, device, data->params[5]) == -1) + prep_error (data, filename, _("failed to partition disk: %s"), + guestfs_last_error (g)); + + off_t lastbootsect = 64 + bootsize/sector - 1; + if (guestfs_part_add (g, device, "primary", 64, lastbootsect) == -1) + prep_error (data, filename, _("failed to add boot partition: %s"), + guestfs_last_error (g)); + + if (guestfs_part_add (g, device, "primary", lastbootsect+1, -64) == -1) + prep_error (data, filename, _("failed to add root partition: %s"), + guestfs_last_error (g)); + + char *vg; + char *lv; + if (vg_lv_parse (data->params[0], &vg, &lv) == -1) + prep_error (data, filename, _("incorrect format for LV name, use '/dev/VG/LV'")); + + char *part; + if (asprintf (&part, "%s1", device) == -1) { + perror ("asprintf"); + exit (EXIT_FAILURE); + } + if (guestfs_mkfs (g, data->params[1], part) == -1) + prep_error (data, filename, _("failed to create boot filesystem: %s"), + guestfs_last_error (g)); + free (part); + + if (asprintf (&part, "%s2", device) == -1) { + perror ("asprintf"); + exit (EXIT_FAILURE); + } + if (guestfs_pvcreate (g, part) == -1) + prep_error (data, filename, _("failed to create PV: %s: %s"), + part, guestfs_last_error (g)); + + char *parts[] = { part, NULL }; + if (guestfs_vgcreate (g, vg, parts) == -1) + prep_error (data, filename, _("failed to create VG: %s: %s"), + vg, guestfs_last_error (g)); + + /* Create the smallest possible LV, then resize it to fill + * all available space. + */ + if (guestfs_lvcreate (g, lv, vg, 1) == -1) + prep_error (data, filename, _("failed to create LV: /dev/%s/%s: %s"), + vg, lv, guestfs_last_error (g)); + if (guestfs_lvresize_free (g, data->params[0], 100) == -1) + prep_error (data, filename, + _("failed to resize LV to full size: %s: %s"), + data->params[0], guestfs_last_error (g)); + + if (guestfs_mkfs (g, data->params[2], data->params[0]) == -1) + prep_error (data, filename, _("failed to create root filesystem: %s"), + guestfs_last_error (g)); + + free (part); + free (vg); + free (lv); +} |