if (fidp->fid_type == P9_FID_FILE) {
/* If we reclaimed the fd no need to close */
if (fidp->fs.fd != -1) {
- retval = v9fs_co_close(pdu, fidp->fs.fd);
+ retval = v9fs_co_close(pdu, &fidp->fs);
}
} else if (fidp->fid_type == P9_FID_DIR) {
if (fidp->fs.dir != NULL) {
- retval = v9fs_co_closedir(pdu, fidp->fs.dir);
+ retval = v9fs_co_closedir(pdu, &fidp->fs);
}
} else if (fidp->fid_type == P9_FID_XATTR) {
retval = v9fs_xattr_fid_clunk(pdu, fidp);
f = reclaim_list;
reclaim_list = f->rclm_lst;
if (f->fid_type == P9_FID_FILE) {
- v9fs_co_close(pdu, f->fs_reclaim.fd);
+ v9fs_co_close(pdu, &f->fs_reclaim);
} else if (f->fid_type == P9_FID_DIR) {
- v9fs_co_closedir(pdu, f->fs_reclaim.dir);
+ v9fs_co_closedir(pdu, &f->fs_reclaim);
}
f->rclm_lst = NULL;
/*
if (s->proto_version == V9FS_PROTO_2000L) {
id = P9_RLERROR;
}
- trace_complete_pdu(pdu->tag, pdu->id, err); /* Trace ERROR */
+ trace_v9fs_rerror(pdu->tag, pdu->id, err); /* Trace ERROR */
}
/* fill out the header */
dst->size++;
}
+static inline bool is_ro_export(FsContext *ctx)
+{
+ return ctx->export_flags & V9FS_RDONLY;
+}
+
static void v9fs_version(void *opaque)
{
V9fsPDU *pdu = opaque;
}
offset += pdu_marshal(pdu, offset, "Q", &qid);
err = offset;
+ trace_v9fs_attach_return(pdu->tag, pdu->id,
+ qid.type, qid.version, qid.path);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_attach_return(pdu->tag, pdu->id,
- qid.type, qid.version, qid.path);
complete_pdu(s, pdu, err);
v9fs_string_free(&uname);
v9fs_string_free(&aname);
}
offset += pdu_marshal(pdu, offset, "wS", 0, &v9stat);
err = offset;
+ trace_v9fs_stat_return(pdu->tag, pdu->id, v9stat.mode,
+ v9stat.atime, v9stat.mtime, v9stat.length);
v9fs_stat_free(&v9stat);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_stat_return(pdu->tag, pdu->id, v9stat.mode,
- v9stat.atime, v9stat.mtime, v9stat.length);
-
complete_pdu(s, pdu, err);
}
}
retval = offset;
retval += pdu_marshal(pdu, offset, "A", &v9stat_dotl);
-out:
- put_fid(pdu, fidp);
-out_nofid:
trace_v9fs_getattr_return(pdu->tag, pdu->id, v9stat_dotl.st_result_mask,
v9stat_dotl.st_mode, v9stat_dotl.st_uid,
v9stat_dotl.st_gid);
-
+out:
+ put_fid(pdu, fidp);
+out_nofid:
complete_pdu(s, pdu, retval);
}
v9fs_path_copy(&newfidp->path, &path);
}
err = v9fs_walk_marshal(pdu, nwnames, qids);
+ trace_v9fs_walk_return(pdu->tag, pdu->id, nwnames, qids);
out:
put_fid(pdu, fidp);
if (newfidp) {
v9fs_path_free(&dpath);
v9fs_path_free(&path);
out_nofid:
- trace_v9fs_walk_return(pdu->tag, pdu->id, nwnames, qids);
complete_pdu(s, pdu, err);
if (nwnames && nwnames <= P9_MAXWELEM) {
for (name_idx = 0; name_idx < nwnames; name_idx++) {
static void v9fs_open(void *opaque)
{
int flags;
- int iounit;
int32_t fid;
int32_t mode;
V9fsQID qid;
+ int iounit = 0;
ssize_t err = 0;
size_t offset = 7;
struct stat stbuf;
} else {
flags = omode_to_uflags(mode);
}
+ if (is_ro_export(&s->ctx)) {
+ if (mode & O_WRONLY || mode & O_RDWR ||
+ mode & O_APPEND || mode & O_TRUNC) {
+ err = -EROFS;
+ goto out;
+ }
+ flags |= O_NOATIME;
+ }
err = v9fs_co_open(pdu, fidp, flags);
if (err < 0) {
goto out;
offset += pdu_marshal(pdu, offset, "Qd", &qid, iounit);
err = offset;
}
+ trace_v9fs_open_return(pdu->tag, pdu->id,
+ qid.type, qid.version, qid.path, iounit);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_open_return(pdu->tag, pdu->id,
- qid.type, qid.version, qid.path, iounit);
complete_pdu(s, pdu, err);
}
stat_to_qid(&stbuf, &qid);
offset += pdu_marshal(pdu, offset, "Qd", &qid, iounit);
err = offset;
+ trace_v9fs_lcreate_return(pdu->tag, pdu->id,
+ qid.type, qid.version, qid.path, iounit);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_lcreate_return(pdu->tag, pdu->id,
- qid.type, qid.version, qid.path, iounit);
complete_pdu(pdu->s, pdu, err);
v9fs_string_free(&name);
}
} else {
err = -EINVAL;
}
+ trace_v9fs_read_return(pdu->tag, pdu->id, count, err);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_read_return(pdu->tag, pdu->id, count, err);
complete_pdu(s, pdu, err);
}
retval = offset;
retval += pdu_marshal(pdu, offset, "d", count);
retval += count;
+ trace_v9fs_readdir_return(pdu->tag, pdu->id, count, retval);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_readdir_return(pdu->tag, pdu->id, count, retval);
complete_pdu(s, pdu, retval);
}
} while (total < count && len > 0);
offset += pdu_marshal(pdu, offset, "d", total);
err = offset;
+ trace_v9fs_write_return(pdu->tag, pdu->id, total, err);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_write_return(pdu->tag, pdu->id, total, err);
complete_pdu(s, pdu, err);
}
stat_to_qid(&stbuf, &qid);
offset += pdu_marshal(pdu, offset, "Qd", &qid, iounit);
err = offset;
+ trace_v9fs_create_return(pdu->tag, pdu->id,
+ qid.type, qid.version, qid.path, iounit);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_create_return(pdu->tag, pdu->id,
- qid.type, qid.version, qid.path, iounit);
complete_pdu(pdu->s, pdu, err);
v9fs_string_free(&name);
v9fs_string_free(&extension);
stat_to_qid(&stbuf, &qid);
offset += pdu_marshal(pdu, offset, "Q", &qid);
err = offset;
+ trace_v9fs_symlink_return(pdu->tag, pdu->id,
+ qid.type, qid.version, qid.path);
out:
put_fid(pdu, dfidp);
out_nofid:
- trace_v9fs_symlink_return(pdu->tag, pdu->id,
- qid.type, qid.version, qid.path);
complete_pdu(pdu->s, pdu, err);
v9fs_string_free(&name);
v9fs_string_free(&symname);
stat_to_qid(&stbuf, &qid);
err = offset;
err += pdu_marshal(pdu, offset, "Q", &qid);
+ trace_v9fs_mknod_return(pdu->tag, pdu->id,
+ qid.type, qid.version, qid.path);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_mknod_return(pdu->tag, pdu->id, qid.type, qid.version, qid.path);
complete_pdu(s, pdu, err);
v9fs_string_free(&name);
}
err = -ENOENT;
goto out_nofid;
}
- err = v9fs_co_fstat(pdu, fidp->fs.fd, &stbuf);
+ err = v9fs_co_fstat(pdu, fidp, &stbuf);
if (err < 0) {
goto out;
}
err = -ENOENT;
goto out_nofid;
}
- err = v9fs_co_fstat(pdu, fidp->fs.fd, &stbuf);
+ err = v9fs_co_fstat(pdu, fidp, &stbuf);
if (err < 0) {
goto out;
}
glock->start, glock->length, glock->proc_id,
&glock->client_id);
err = offset;
+ trace_v9fs_getlock_return(pdu->tag, pdu->id, glock->type, glock->start,
+ glock->length, glock->proc_id);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_getlock_return(pdu->tag, pdu->id, glock->type, glock->start,
- glock->length, glock->proc_id);
-
complete_pdu(s, pdu, err);
v9fs_string_free(&glock->client_id);
g_free(glock);
stat_to_qid(&stbuf, &qid);
offset += pdu_marshal(pdu, offset, "Q", &qid);
err = offset;
+ trace_v9fs_mkdir_return(pdu->tag, pdu->id,
+ qid.type, qid.version, qid.path, err);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_mkdir_return(pdu->tag, pdu->id,
- qid.type, qid.version, qid.path, err);
complete_pdu(pdu->s, pdu, err);
v9fs_string_free(&name);
}
offset += pdu_marshal(pdu, offset, "q", size);
err = offset;
}
+ trace_v9fs_xattrwalk_return(pdu->tag, pdu->id, size);
out:
put_fid(pdu, file_fidp);
if (xattr_fidp) {
put_fid(pdu, xattr_fidp);
}
out_nofid:
- trace_v9fs_xattrwalk_return(pdu->tag, pdu->id, size);
complete_pdu(s, pdu, err);
v9fs_string_free(&name);
}
}
offset += pdu_marshal(pdu, offset, "s", &target);
err = offset;
+ trace_v9fs_readlink_return(pdu->tag, pdu->id, target.data);
v9fs_string_free(&target);
out:
put_fid(pdu, fidp);
out_nofid:
- trace_v9fs_readlink_return(pdu->tag, pdu->id, target.data);
complete_pdu(pdu->s, pdu, err);
}
complete_pdu(pdu->s, pdu, -EOPNOTSUPP);
}
+static void v9fs_fs_ro(void *opaque)
+{
+ V9fsPDU *pdu = opaque;
+ complete_pdu(pdu->s, pdu, -EROFS);
+}
+
+static inline bool is_read_only_op(V9fsPDU *pdu)
+{
+ switch (pdu->id) {
+ case P9_TREADDIR:
+ case P9_TSTATFS:
+ case P9_TGETATTR:
+ case P9_TXATTRWALK:
+ case P9_TLOCK:
+ case P9_TGETLOCK:
+ case P9_TREADLINK:
+ case P9_TVERSION:
+ case P9_TLOPEN:
+ case P9_TATTACH:
+ case P9_TSTAT:
+ case P9_TWALK:
+ case P9_TCLUNK:
+ case P9_TFSYNC:
+ case P9_TOPEN:
+ case P9_TREAD:
+ case P9_TAUTH:
+ case P9_TFLUSH:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
static void submit_pdu(V9fsState *s, V9fsPDU *pdu)
{
Coroutine *co;
} else {
handler = pdu_co_handlers[pdu->id];
}
+
+ if (is_ro_export(&s->ctx) && !is_read_only_op(pdu)) {
+ handler = v9fs_fs_ro;
+ }
co = qemu_coroutine_create(handler);
qemu_coroutine_enter(co, pdu);
}