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migration: pre_save return int

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Modify the pre_save method on VMStateDescription to return an int
rather than void so that it potentially can fail.

Changed zillions of devices to make them return 0; the only
case I've made it return non-0 is hw/intc/s390_flic_kvm.c that already
had an error_report/return case.

Note: If you add an error exit in your pre_save you must emit
an error_report to say why.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170925112917.21340-2-dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2017-09-25 12:29:12 +01:00
parent 9ac78b6171
commit 44b1ff319c
59 changed files with 199 additions and 70 deletions
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8
slirp/slirp.c
View file

@ -1203,11 +1203,13 @@ struct sbuf_tmp {
uint32_t roff, woff;
};
static void sbuf_tmp_pre_save(void *opaque)
static int sbuf_tmp_pre_save(void *opaque)
{
struct sbuf_tmp *tmp = opaque;
tmp->woff = tmp->parent->sb_wptr - tmp->parent->sb_data;
tmp->roff = tmp->parent->sb_rptr - tmp->parent->sb_data;
return 0;
}
static int sbuf_tmp_post_load(void *opaque, int version)
@ -1303,7 +1305,7 @@ typedef struct SS_FamilyTmpStruct {
#define SS_FAMILY_MIG_IPV6 10 /* Linux */
#define SS_FAMILY_MIG_OTHER 0xffff
static void ss_family_pre_save(void *opaque)
static int ss_family_pre_save(void *opaque)
{
SS_FamilyTmpStruct *tss = opaque;
@ -1314,6 +1316,8 @@ static void ss_family_pre_save(void *opaque)
} else if (tss->parent->ss.ss_family == AF_INET6) {
tss->portable_family = SS_FAMILY_MIG_IPV6;
}
return 0;
}
static int ss_family_post_load(void *opaque, int version_id)