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-rw-r--r--hw/virtio-9p.c156
-rw-r--r--hw/virtio-9p.h11
2 files changed, 123 insertions, 44 deletions
diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index 7ea0e96..88dd496 100644
--- a/hw/virtio-9p.c
+++ b/hw/virtio-9p.c
@@ -2563,11 +2563,6 @@ static void v9fs_wstat_post_rename(V9fsState *s, V9fsWstatState *vs, int err)
if (err < 0) {
goto out;
}
-
- if (vs->v9stat.name.size != 0) {
- v9fs_string_free(&vs->nname);
- }
-
if (vs->v9stat.length != -1) {
if (v9fs_do_truncate(s, &vs->fidp->path, vs->v9stat.length) < 0) {
err = -errno;
@@ -2582,17 +2577,30 @@ out:
qemu_free(vs);
}
-static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err)
+static int v9fs_complete_rename(V9fsState *s, V9fsRenameState *vs)
{
- V9fsFidState *fidp;
- if (err < 0) {
- goto out;
- }
+ int err = 0;
+ char *old_name, *new_name;
+ char *end;
- if (vs->v9stat.name.size != 0) {
- char *old_name, *new_name;
- char *end;
+ if (vs->newdirfid != -1) {
+ V9fsFidState *dirfidp;
+ dirfidp = lookup_fid(s, vs->newdirfid);
+
+ if (dirfidp == NULL) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ BUG_ON(dirfidp->fd != -1);
+ BUG_ON(dirfidp->dir);
+ new_name = qemu_mallocz(dirfidp->path.size + vs->name.size + 2);
+
+ strcpy(new_name, dirfidp->path.data);
+ strcat(new_name, "/");
+ strcat(new_name + dirfidp->path.size, vs->name.data);
+ } else {
old_name = vs->fidp->path.data;
end = strrchr(old_name, '/');
if (end) {
@@ -2600,43 +2608,75 @@ static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err)
} else {
end = old_name;
}
+ new_name = qemu_mallocz(end - old_name + vs->name.size + 1);
- new_name = qemu_mallocz(end - old_name + vs->v9stat.name.size + 1);
+ strncat(new_name, old_name, end - old_name);
+ strncat(new_name + (end - old_name), vs->name.data, vs->name.size);
+ }
- memcpy(new_name, old_name, end - old_name);
- memcpy(new_name + (end - old_name), vs->v9stat.name.data,
- vs->v9stat.name.size);
- vs->nname.data = new_name;
- vs->nname.size = strlen(new_name);
+ v9fs_string_free(&vs->name);
+ vs->name.data = qemu_strdup(new_name);
+ vs->name.size = strlen(new_name);
- if (strcmp(new_name, vs->fidp->path.data) != 0) {
- if (v9fs_do_rename(s, &vs->fidp->path, &vs->nname)) {
- err = -errno;
- } else {
- /*
- * 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 strcmp will work
- */
- continue;
- }
- if (!strncmp(vs->fidp->path.data, fidp->path.data,
- strlen(vs->fidp->path.data))) {
- /* replace the name */
- v9fs_fix_path(&fidp->path, &vs->nname,
- strlen(vs->fidp->path.data));
- }
+ 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 strcmp will work
+ */
+ continue;
+ }
+ if (!strncmp(vs->fidp->path.data, fidp->path.data,
+ strlen(vs->fidp->path.data))) {
+ /* replace the name */
+ v9fs_fix_path(&fidp->path, &vs->name,
+ strlen(vs->fidp->path.data));
}
- v9fs_string_copy(&vs->fidp->path, &vs->nname);
}
+ v9fs_string_copy(&vs->fidp->path, &vs->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) {
+ goto out;
+ }
+
+ if (vs->v9stat.name.size != 0) {
+ V9fsRenameState *vr;
+
+ vr = qemu_malloc(sizeof(V9fsRenameState));
+ memset(vr, sizeof(*vr), 0);
+ 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);
+ }
v9fs_wstat_post_rename(s, vs, err);
return;
@@ -2646,6 +2686,35 @@ out:
qemu_free(vs);
}
+static void v9fs_rename(V9fsState *s, V9fsPDU *pdu)
+{
+ int32_t fid;
+ V9fsRenameState *vs;
+ ssize_t err = 0;
+
+ vs = qemu_malloc(sizeof(*vs));
+ vs->pdu = pdu;
+ vs->offset = 7;
+
+ pdu_unmarshal(vs->pdu, vs->offset, "dds", &fid, &vs->newdirfid, &vs->name);
+
+ vs->fidp = lookup_fid(s, fid);
+ if (vs->fidp == NULL) {
+ err = -ENOENT;
+ goto out;
+ }
+
+ BUG_ON(vs->fidp->fd != -1);
+ BUG_ON(vs->fidp->dir);
+
+ err = v9fs_complete_rename(s, vs);
+ v9fs_rename_post_rename(s, vs, err);
+ return;
+out:
+ complete_pdu(s, vs->pdu, err);
+ qemu_free(vs);
+}
+
static void v9fs_wstat_post_utime(V9fsState *s, V9fsWstatState *vs, int err)
{
if (err < 0) {
@@ -3004,6 +3073,7 @@ static pdu_handler_t *pdu_handlers[] = {
[P9_TGETATTR] = v9fs_getattr,
[P9_TSETATTR] = v9fs_setattr,
[P9_TMKNOD] = v9fs_mknod,
+ [P9_TRENAME] = v9fs_rename,
[P9_TMKDIR] = v9fs_mkdir,
[P9_TVERSION] = v9fs_version,
[P9_TATTACH] = v9fs_attach,
diff --git a/hw/virtio-9p.h b/hw/virtio-9p.h
index 91cc0ae..4d179b7 100644
--- a/hw/virtio-9p.h
+++ b/hw/virtio-9p.h
@@ -21,6 +21,8 @@ enum {
P9_RSYMLINK,
P9_TMKNOD = 18,
P9_RMKNOD,
+ P9_TRENAME = 20,
+ P9_RRENAME,
P9_TGETATTR = 24,
P9_RGETATTR,
P9_TSETATTR = 26,
@@ -310,7 +312,6 @@ typedef struct V9fsWstatState
V9fsStat v9stat;
V9fsFidState *fidp;
struct stat stbuf;
- V9fsString nname;
} V9fsWstatState;
typedef struct V9fsSymlinkState
@@ -385,6 +386,14 @@ typedef struct V9fsMkState {
V9fsString fullname;
} V9fsMkState;
+typedef struct V9fsRenameState {
+ V9fsPDU *pdu;
+ V9fsFidState *fidp;
+ size_t offset;
+ int32_t newdirfid;
+ V9fsString name;
+} V9fsRenameState;
+
extern size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count,
size_t offset, size_t size, int pack);
generated by cgit v1.1 at 2024-10-18 01:13:46 +0000