Revision 8b3b7206 block/qcow2-snapshot.c
| b/block/qcow2-snapshot.c | ||
|---|---|---|
| 158 | 158 |
h.id_str_size = cpu_to_be16(id_str_size); |
| 159 | 159 |
h.name_size = cpu_to_be16(name_size); |
| 160 | 160 |
offset = align_offset(offset, 8); |
| 161 |
if (bdrv_pwrite(bs->file, offset, &h, sizeof(h)) != sizeof(h))
|
|
| 161 |
if (bdrv_pwrite_sync(bs->file, offset, &h, sizeof(h)) < 0)
|
|
| 162 | 162 |
goto fail; |
| 163 | 163 |
offset += sizeof(h); |
| 164 |
if (bdrv_pwrite(bs->file, offset, sn->id_str, id_str_size) != id_str_size)
|
|
| 164 |
if (bdrv_pwrite_sync(bs->file, offset, sn->id_str, id_str_size) < 0)
|
|
| 165 | 165 |
goto fail; |
| 166 | 166 |
offset += id_str_size; |
| 167 |
if (bdrv_pwrite(bs->file, offset, sn->name, name_size) != name_size)
|
|
| 167 |
if (bdrv_pwrite_sync(bs->file, offset, sn->name, name_size) < 0)
|
|
| 168 | 168 |
goto fail; |
| 169 | 169 |
offset += name_size; |
| 170 | 170 |
} |
| 171 | 171 |
|
| 172 | 172 |
/* update the various header fields */ |
| 173 | 173 |
data64 = cpu_to_be64(snapshots_offset); |
| 174 |
if (bdrv_pwrite(bs->file, offsetof(QCowHeader, snapshots_offset), |
|
| 175 |
&data64, sizeof(data64)) != sizeof(data64))
|
|
| 174 |
if (bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, snapshots_offset),
|
|
| 175 |
&data64, sizeof(data64)) < 0)
|
|
| 176 | 176 |
goto fail; |
| 177 | 177 |
data32 = cpu_to_be32(s->nb_snapshots); |
| 178 |
if (bdrv_pwrite(bs->file, offsetof(QCowHeader, nb_snapshots), |
|
| 179 |
&data32, sizeof(data32)) != sizeof(data32))
|
|
| 178 |
if (bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots),
|
|
| 179 |
&data32, sizeof(data32)) < 0)
|
|
| 180 | 180 |
goto fail; |
| 181 | 181 |
|
| 182 | 182 |
/* free the old snapshot table */ |
| ... | ... | |
| 284 | 284 |
for(i = 0; i < s->l1_size; i++) {
|
| 285 | 285 |
l1_table[i] = cpu_to_be64(s->l1_table[i]); |
| 286 | 286 |
} |
| 287 |
if (bdrv_pwrite(bs->file, sn->l1_table_offset, |
|
| 288 |
l1_table, s->l1_size * sizeof(uint64_t)) != |
|
| 289 |
(s->l1_size * sizeof(uint64_t))) |
|
| 287 |
if (bdrv_pwrite_sync(bs->file, sn->l1_table_offset, |
|
| 288 |
l1_table, s->l1_size * sizeof(uint64_t)) < 0) |
|
| 290 | 289 |
goto fail; |
| 291 | 290 |
qemu_free(l1_table); |
| 292 | 291 |
l1_table = NULL; |
| ... | ... | |
| 335 | 334 |
if (bdrv_pread(bs->file, sn->l1_table_offset, |
| 336 | 335 |
s->l1_table, l1_size2) != l1_size2) |
| 337 | 336 |
goto fail; |
| 338 |
if (bdrv_pwrite(bs->file, s->l1_table_offset, |
|
| 339 |
s->l1_table, l1_size2) != l1_size2)
|
|
| 337 |
if (bdrv_pwrite_sync(bs->file, s->l1_table_offset,
|
|
| 338 |
s->l1_table, l1_size2) < 0)
|
|
| 340 | 339 |
goto fail; |
| 341 | 340 |
for(i = 0;i < s->l1_size; i++) {
|
| 342 | 341 |
be64_to_cpus(&s->l1_table[i]); |
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