#include "migration/blocker.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qstring.h"
+#include "qemu/ctype.h"
#include "qemu/cutils.h"
#include "qemu/error-report.h"
return array->pointer+index*array->item_size;
}
-/* this performs a "roll", so that the element which was at index_from becomes
- * index_to, but the order of all other elements is preserved. */
-static inline int array_roll(array_t* array,int index_to,int index_from,int count)
-{
- char* buf;
- char* from;
- char* to;
- int is;
-
- if(!array ||
- index_to<0 || index_to>=array->next ||
- index_from<0 || index_from>=array->next)
- return -1;
-
- if(index_to==index_from)
- return 0;
-
- is=array->item_size;
- from=array->pointer+index_from*is;
- to=array->pointer+index_to*is;
- buf=g_malloc(is*count);
- memcpy(buf,from,is*count);
-
- if(index_to<index_from)
- memmove(to+is*count,to,from-to);
- else
- memmove(from,from+is*count,to-from);
-
- memcpy(to,buf,is*count);
-
- g_free(buf);
-
- return 0;
-}
-
static inline int array_remove_slice(array_t* array,int index, int count)
{
assert(index >=0);
assert(count > 0);
assert(index + count <= array->next);
- if(array_roll(array,array->next-1,index,count))
- return -1;
+
+ memmove(array->pointer + index * array->item_size,
+ array->pointer + (index + count) * array->item_size,
+ (array->next - index - count) * array->item_size);
+
array->next -= count;
return 0;
}
direntry->begin_hi = cpu_to_le16((begin >> 16) & 0xffff);
}
+static bool valid_filename(const unsigned char *name)
+{
+ unsigned char c;
+ if (!strcmp((const char*)name, ".") || !strcmp((const char*)name, "..")) {
+ return false;
+ }
+ for (; (c = *name); name++) {
+ if (!((c >= '0' && c <= '9') ||
+ (c >= 'A' && c <= 'Z') ||
+ (c >= 'a' && c <= 'z') ||
+ c > 127 ||
+ strchr("$%'-_@~`!(){}^#&.+,;=[]", c) != NULL))
+ {
+ return false;
+ }
+ }
+ return true;
+}
+
static uint8_t to_valid_short_char(gunichar c)
{
c = g_unichar_toupper(c);
if ((c >= '0' && c <= '9') ||
(c >= 'A' && c <= 'Z') ||
- strchr("$%'-_@~`!(){}^#&", c) != 0) {
+ strchr("$%'-_@~`!(){}^#&", c) != NULL) {
return c;
} else {
return 0;
bool floppy;
const char *dirname, *label;
QemuOpts *opts;
- Error *local_err = NULL;
int ret;
#ifdef DEBUG
#endif
opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
- qemu_opts_absorb_qdict(opts, options, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!qemu_opts_absorb_qdict(opts, options, errp)) {
ret = -EINVAL;
goto fail;
}
"The vvfat (rw) format used by node '%s' "
"does not support live migration",
bdrv_get_device_or_node_name(bs));
- ret = migrate_add_blocker(s->migration_blocker, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ ret = migrate_add_blocker(s->migration_blocker, errp);
+ if (ret < 0) {
error_free(s->migration_blocker);
goto fail;
}
if(!s->current_mapping ||
strcmp(s->current_mapping->path,mapping->path)) {
/* open file */
- int fd = qemu_open(mapping->path, O_RDONLY | O_BINARY | O_LARGEFILE);
+ int fd = qemu_open_old(mapping->path,
+ O_RDONLY | O_BINARY | O_LARGEFILE);
if(fd<0)
return -1;
vvfat_close_current_file(s);
DLOG(fprintf(stderr, "sectors %" PRId64 "+%" PRId64
" allocated\n", sector_num,
n >> BDRV_SECTOR_BITS));
- if (bdrv_read(s->qcow, sector_num, buf + i * 0x200,
- n >> BDRV_SECTOR_BITS)) {
+ if (bdrv_pread(s->qcow, sector_num * BDRV_SECTOR_SIZE,
+ buf + i * 0x200, n) < 0) {
return -1;
}
i += (n >> BDRV_SECTOR_BITS) - 1;
int nb_sectors = bytes >> BDRV_SECTOR_BITS;
void *buf;
- assert((offset & (BDRV_SECTOR_SIZE - 1)) == 0);
- assert((bytes & (BDRV_SECTOR_SIZE - 1)) == 0);
+ assert(QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE));
+ assert(QEMU_IS_ALIGNED(bytes, BDRV_SECTOR_SIZE));
buf = g_try_malloc(bytes);
if (bytes && buf == NULL) {
if (res) {
return -1;
}
- res = bdrv_write(s->qcow, offset, s->cluster_buffer, 1);
- if (res) {
+ res = bdrv_pwrite(s->qcow, offset * BDRV_SECTOR_SIZE,
+ s->cluster_buffer, BDRV_SECTOR_SIZE);
+ if (res < 0) {
return -2;
}
}
}
lfn.checksum = 0x100; /* cannot use long name twice */
+ if (!valid_filename(lfn.name)) {
+ fprintf(stderr, "Invalid file name\n");
+ goto fail;
+ }
if (path_len + 1 + lfn.len >= PATH_MAX) {
fprintf(stderr, "Name too long: %s/%s\n", path, lfn.name);
goto fail;
* - get modified FAT
* - compare the two FATs (TODO)
* - get buffer for marking used clusters
- * - recurse direntries from root (using bs->bdrv_read to make
+ * - recurse direntries from root (using bs->bdrv_pread to make
* sure to get the new data)
* - check that the FAT agrees with the size
* - count the number of clusters occupied by this directory and
for (i = s->cluster_size; i < offset; i += s->cluster_size)
c = modified_fat_get(s, c);
- fd = qemu_open(mapping->path, O_RDWR | O_CREAT | O_BINARY, 0666);
+ fd = qemu_open_old(mapping->path, O_RDWR | O_CREAT | O_BINARY, 0666);
if (fd < 0) {
fprintf(stderr, "Could not open %s... (%s, %d)\n", mapping->path,
strerror(errno), errno);
/*
* synchronize mapping with new state:
*
- * - copy FAT (with bdrv_read)
+ * - copy FAT (with bdrv_pread)
* - mark all filenames corresponding to mappings as deleted
- * - recurse direntries from root (using bs->bdrv_read)
+ * - recurse direntries from root (using bs->bdrv_pread)
* - delete files corresponding to mappings marked as deleted
*/
static int do_commit(BDRVVVFATState* s)
return ret;
}
- /* copy FAT (with bdrv_read) */
+ /* copy FAT (with bdrv_pread) */
memcpy(s->fat.pointer, s->fat2, 0x200 * s->sectors_per_fat);
- /* recurse direntries from root (using bs->bdrv_read) */
+ /* recurse direntries from root (using bs->bdrv_pread) */
ret = commit_direntries(s, 0, -1);
if (ret) {
fprintf(stderr, "Fatal: error while committing (%d)\n", ret);
return ret;
}
- if (s->qcow->bs->drv && s->qcow->bs->drv->bdrv_make_empty) {
- s->qcow->bs->drv->bdrv_make_empty(s->qcow->bs);
- }
+ bdrv_make_empty(s->qcow, NULL);
memset(s->used_clusters, 0, sector2cluster(s, s->sector_count));
* Use qcow backend. Commit later.
*/
DLOG(fprintf(stderr, "Write to qcow backend: %d + %d\n", (int)sector_num, nb_sectors));
- ret = bdrv_write(s->qcow, sector_num, buf, nb_sectors);
+ ret = bdrv_pwrite(s->qcow, sector_num * BDRV_SECTOR_SIZE, buf,
+ nb_sectors * BDRV_SECTOR_SIZE);
if (ret < 0) {
fprintf(stderr, "Error writing to qcow backend\n");
return ret;
int nb_sectors = bytes >> BDRV_SECTOR_BITS;
void *buf;
- assert((offset & (BDRV_SECTOR_SIZE - 1)) == 0);
- assert((bytes & (BDRV_SECTOR_SIZE - 1)) == 0);
+ assert(QEMU_IS_ALIGNED(offset, BDRV_SECTOR_SIZE));
+ assert(QEMU_IS_ALIGNED(bytes, BDRV_SECTOR_SIZE));
buf = g_try_malloc(bytes);
if (bytes && buf == NULL) {
return ret;
}
-static void write_target_close(BlockDriverState *bs) {
- BDRVVVFATState* s = *((BDRVVVFATState**) bs->opaque);
- bdrv_unref_child(s->bs, s->qcow);
- g_free(s->qcow_filename);
-}
-
static BlockDriver vvfat_write_target = {
.format_name = "vvfat_write_target",
.instance_size = sizeof(void*),
.bdrv_co_pwritev = write_target_commit,
- .bdrv_close = write_target_close,
};
-static void vvfat_qcow_options(int *child_flags, QDict *child_options,
+static void vvfat_qcow_options(BdrvChildRole role, bool parent_is_format,
+ int *child_flags, QDict *child_options,
int parent_flags, QDict *parent_options)
{
qdict_set_default_str(child_options, BDRV_OPT_READ_ONLY, "off");
qdict_set_default_str(child_options, BDRV_OPT_CACHE_NO_FLUSH, "on");
}
-static const BdrvChildRole child_vvfat_qcow = {
+static const BdrvChildClass child_vvfat_qcow = {
.parent_is_bds = true,
.inherit_options = vvfat_qcow_options,
};
options = qdict_new();
qdict_put_str(options, "write-target.driver", "qcow");
s->qcow = bdrv_open_child(s->qcow_filename, options, "write-target", bs,
- &child_vvfat_qcow, false, errp);
+ &child_vvfat_qcow,
+ BDRV_CHILD_DATA | BDRV_CHILD_METADATA,
+ false, errp);
qobject_unref(options);
if (!s->qcow) {
ret = -EINVAL;
}
static void vvfat_child_perm(BlockDriverState *bs, BdrvChild *c,
- const BdrvChildRole *role,
+ BdrvChildRole role,
BlockReopenQueue *reopen_queue,
uint64_t perm, uint64_t shared,
uint64_t *nperm, uint64_t *nshared)
{
BDRVVVFATState *s = bs->opaque;
- assert(c == s->qcow || role == &child_backing);
+ assert(c == s->qcow || (role & BDRV_CHILD_COW));
if (c == s->qcow) {
/* This is a private node, nobody should try to attach to it */
projects / mirror_qemu.git / blobdiff