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-rw-r--r--hw/9pfs/virtio-9p.c132
-rw-r--r--hw/9pfs/virtio-9p.h9
2 files changed, 52 insertions, 89 deletions
diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c
index 86d4dec157..f2193d6961 100644
--- a/hw/9pfs/virtio-9p.c
+++ b/hw/9pfs/virtio-9p.c
@@ -189,12 +189,6 @@ static int v9fs_do_truncate(V9fsState *s, V9fsString *path, off_t size)
return s->ops->truncate(&s->ctx, path->data, size);
}
-static int v9fs_do_rename(V9fsState *s, V9fsString *oldpath,
- V9fsString *newpath)
-{
- return s->ops->rename(&s->ctx, oldpath->data, newpath->data);
-}
-
static int v9fs_do_chown(V9fsState *s, V9fsString *path, uid_t uid, gid_t gid)
{
FsCred cred;
@@ -2633,84 +2627,74 @@ out:
qemu_free(vs);
}
-static int v9fs_complete_rename(V9fsState *s, V9fsRenameState *vs)
+static int v9fs_complete_rename(V9fsState *s, V9fsFidState *fidp,
+ int32_t newdirfid, V9fsString *name)
{
+ char *end;
int err = 0;
char *old_name, *new_name;
- char *end;
- if (vs->newdirfid != -1) {
+ if (newdirfid != -1) {
V9fsFidState *dirfidp;
- dirfidp = lookup_fid(s, vs->newdirfid);
-
+ dirfidp = lookup_fid(s, newdirfid);
if (dirfidp == NULL) {
err = -ENOENT;
goto out;
}
-
BUG_ON(dirfidp->fid_type != P9_FID_NONE);
- new_name = qemu_mallocz(dirfidp->path.size + vs->name.size + 2);
+ new_name = qemu_mallocz(dirfidp->path.size + name->size + 2);
strcpy(new_name, dirfidp->path.data);
strcat(new_name, "/");
- strcat(new_name + dirfidp->path.size, vs->name.data);
+ strcat(new_name + dirfidp->path.size, name->data);
} else {
- old_name = vs->fidp->path.data;
+ old_name = fidp->path.data;
end = strrchr(old_name, '/');
if (end) {
end++;
} else {
end = old_name;
}
- new_name = qemu_mallocz(end - old_name + vs->name.size + 1);
+ new_name = qemu_mallocz(end - old_name + name->size + 1);
strncat(new_name, old_name, end - old_name);
- strncat(new_name + (end - old_name), vs->name.data, vs->name.size);
+ strncat(new_name + (end - old_name), name->data, name->size);
}
- v9fs_string_free(&vs->name);
- vs->name.data = qemu_strdup(new_name);
- vs->name.size = strlen(new_name);
+ v9fs_string_free(name);
+ name->data = new_name;
+ name->size = strlen(new_name);
- if (strcmp(new_name, vs->fidp->path.data) != 0) {
- if (v9fs_do_rename(s, &vs->fidp->path, &vs->name)) {
- err = -errno;
- } else {
- V9fsFidState *fidp;
- /*
- * Fixup fid's pointing to the old name to
- * start pointing to the new name
- */
- for (fidp = s->fid_list; fidp; fidp = fidp->next) {
- if (vs->fidp == fidp) {
- /*
- * we replace name of this fid towards the end so
- * that our below v9fs_path_is_ancestor check will
- * work
- */
- continue;
- }
- if (v9fs_path_is_ancestor(&vs->fidp->path, &fidp->path)) {
- /* replace the name */
- v9fs_fix_path(&fidp->path, &vs->name,
- strlen(vs->fidp->path.data));
- }
+ if (strcmp(new_name, fidp->path.data) != 0) {
+ err = v9fs_co_rename(s, &fidp->path, name);
+ if (err < 0) {
+ goto out;
+ }
+ V9fsFidState *tfidp;
+ /*
+ * Fixup fid's pointing to the old name to
+ * start pointing to the new name
+ */
+ for (tfidp = s->fid_list; tfidp; tfidp = tfidp->next) {
+ if (fidp == tfidp) {
+ /*
+ * we replace name of this fid towards the end
+ * so that our below strcmp will work
+ */
+ continue;
+ }
+ if (v9fs_path_is_ancestor(&fidp->path, &tfidp->path)) {
+ /* replace the name */
+ v9fs_fix_path(&tfidp->path, name, strlen(fidp->path.data));
}
- v9fs_string_copy(&vs->fidp->path, &vs->name);
}
+ v9fs_string_copy(&fidp->path, name);
}
out:
- v9fs_string_free(&vs->name);
return err;
}
-static void v9fs_rename_post_rename(V9fsState *s, V9fsRenameState *vs, int err)
-{
- complete_pdu(s, vs->pdu, err);
- qemu_free(vs);
-}
-
static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err)
{
if (err < 0) {
@@ -2718,18 +2702,7 @@ static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err)
}
if (vs->v9stat.name.size != 0) {
- V9fsRenameState *vr;
-
- vr = qemu_mallocz(sizeof(V9fsRenameState));
- vr->newdirfid = -1;
- vr->pdu = vs->pdu;
- vr->fidp = vs->fidp;
- vr->offset = vs->offset;
- vr->name.size = vs->v9stat.name.size;
- vr->name.data = qemu_strdup(vs->v9stat.name.data);
-
- err = v9fs_complete_rename(s, vr);
- qemu_free(vr);
+ err = v9fs_complete_rename(s, vs->fidp, -1, &vs->v9stat.name);
}
v9fs_wstat_post_rename(s, vs, err);
return;
@@ -2742,32 +2715,31 @@ out:
static void v9fs_rename(void *opaque)
{
- V9fsPDU *pdu = opaque;
- V9fsState *s = pdu->s;
int32_t fid;
- V9fsRenameState *vs;
ssize_t err = 0;
+ size_t offset = 7;
+ V9fsString name;
+ int32_t newdirfid;
+ V9fsFidState *fidp;
+ V9fsPDU *pdu = opaque;
+ V9fsState *s = pdu->s;
- vs = qemu_malloc(sizeof(*vs));
- vs->pdu = pdu;
- vs->offset = 7;
-
- pdu_unmarshal(vs->pdu, vs->offset, "dds", &fid, &vs->newdirfid, &vs->name);
+ pdu_unmarshal(pdu, offset, "dds", &fid, &newdirfid, &name);
- vs->fidp = lookup_fid(s, fid);
- if (vs->fidp == NULL) {
+ fidp = lookup_fid(s, fid);
+ if (fidp == NULL) {
err = -ENOENT;
goto out;
}
+ BUG_ON(fidp->fid_type != P9_FID_NONE);
- BUG_ON(vs->fidp->fid_type != P9_FID_NONE);
-
- err = v9fs_complete_rename(s, vs);
- v9fs_rename_post_rename(s, vs, err);
- return;
+ err = v9fs_complete_rename(s, fidp, newdirfid, &name);
+ if (!err) {
+ err = offset;
+ }
out:
- complete_pdu(s, vs->pdu, err);
- qemu_free(vs);
+ complete_pdu(s, pdu, err);
+ v9fs_string_free(&name);
}
static void v9fs_wstat_post_utime(V9fsState *s, V9fsWstatState *vs, int err)
diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h
index 194f0ea6d3..46d79da920 100644
--- a/hw/9pfs/virtio-9p.h
+++ b/hw/9pfs/virtio-9p.h
@@ -385,15 +385,6 @@ typedef struct V9fsMkState {
V9fsString fullname;
} V9fsMkState;
-typedef struct V9fsRenameState {
- V9fsPDU *pdu;
- V9fsFidState *fidp;
- size_t offset;
- int32_t newdirfid;
- V9fsString name;
-} V9fsRenameState;
-
-
#define P9_LOCK_SUCCESS 0
#define P9_LOCK_BLOCKED 1
#define P9_LOCK_ERROR 2
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-19 04:27:52 +0000