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Allow creation of LXC with bdevspecs.

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New Container#create accept 5 parameters:
container.create(template, bdevtype = nil, bdevspecs = {}, flags = 0, args = [])

Example:

myspec = { fstype: 'ext4', fssize: 32212254720, vgname: 'zephirworks_VG'}

c = LXC::Container.new('zephirworks_example')
c.create("ubuntu", "lvm", myspec)
This commit is contained in:
Andrea C. Granata 2014-05-04 19:38:33 +02:00
parent 312715d2aa
commit 695ee8f87b
1 changed files with 49 additions and 8 deletions
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51
ext/lxc/lxc.c
View file

@ -51,6 +51,20 @@ struct container_data {
struct lxc_container *container;
};
struct bdev_specs {
char *fstype;
uint64_t fssize; // fs size in bytes
struct {
char *zfsroot;
} zfs;
struct {
char *vg;
char *lv;
char *thinpool; // lvm thin pool to use, if any
} lvm;
char *dir;
};
static char **
ruby_to_c_string_array(VALUE rb_arr)
{
@ -1010,6 +1024,7 @@ struct container_create_without_gvl_args {
struct container_data *data;
char *template;
char *bdevtype;
struct bdev_specs *bdevspecs;
int flags;
char **args;
};
@ -1021,14 +1036,14 @@ container_create_without_gvl(void *args_void)
(struct container_create_without_gvl_args *)args_void;
RETURN_WITHOUT_GVL(
args->data->container->create(args->data->container, args->template,
args->bdevtype, NULL, args->flags,
args->bdevtype, args->bdevspecs, args->flags,
args->args)
);
}
/*
* call-seq:
* container.create(template, bdevtype = nil, flags = 0, args = [])
* container.create(template, bdevtype = nil, bdevspecs = {}, flags = 0, args = [])
*
* Creates a structure for the container according to the given template.
* This usually consists of downloading and installing a Linux distribution
@ -1040,15 +1055,41 @@ static VALUE
container_create(int argc, VALUE *argv, VALUE self)
{
int ret;
VALUE rb_template, rb_bdevtype, rb_flags, rb_args;
struct bdev_specs spec;
VALUE rb_template, rb_bdevtype, rb_bdevspecs, rb_flags, rb_args;
VALUE fstype, fssize, zfsroot, lvname, vgname, thinpool, dir;
struct container_create_without_gvl_args args;
char **default_args = { NULL };
args.args = default_args;
rb_scan_args(argc, argv, "13",
&rb_template, &rb_bdevtype, &rb_flags, &rb_args);
rb_scan_args(argc, argv, "14",
&rb_template, &rb_bdevtype, &rb_bdevspecs, &rb_flags, &rb_args);
if (!NIL_P(rb_bdevspecs)) {
memset(&spec, 0, sizeof(spec));
fstype = rb_hash_aref(rb_bdevspecs, ID2SYM(rb_intern("fstype")));
fssize = rb_hash_aref(rb_bdevspecs, ID2SYM(rb_intern("fssize")));
zfsroot = rb_hash_aref(rb_bdevspecs, ID2SYM(rb_intern("zfsroot")));
lvname = rb_hash_aref(rb_bdevspecs, ID2SYM(rb_intern("lvname")));
vgname = rb_hash_aref(rb_bdevspecs, ID2SYM(rb_intern("vgname")));
thinpool = rb_hash_aref(rb_bdevspecs, ID2SYM(rb_intern("thinpool")));
dir = rb_hash_aref(rb_bdevspecs, ID2SYM(rb_intern("dir")));
spec.fstype = StringValuePtr(fstype);
spec.fssize = NUM2ULONG(fssize);
spec.zfs.zfsroot = StringValuePtr(zfsroot);
spec.lvm.lv = StringValuePtr(lvname);
spec.lvm.vg = StringValuePtr(vgname);
spec.lvm.thinpool = StringValuePtr(thinpool);
spec.dir = StringValuePtr(dir);
}
args.template = StringValuePtr(rb_template);
args.bdevspecs = &spec;
args.bdevtype = NIL_P(rb_bdevtype) ? NULL : StringValuePtr(rb_bdevtype);
args.flags = NIL_P(rb_flags) ? 0 : NUM2INT(rb_flags);
if (!NIL_P(rb_args))