/*
* Read back the persistent representation of an active case.
*/
static zfs_case_t *
zfs_case_unserialize(fmd_hdl_t *hdl, fmd_case_t *cp)
{
zfs_case_t *zcp;
zcp = fmd_hdl_zalloc(hdl, sizeof (zfs_case_t), FMD_SLEEP);
zcp->zc_case = cp;
fmd_buf_read(hdl, cp, CASE_DATA, &zcp->zc_data,
sizeof (zcp->zc_data));
if (zcp->zc_data.zc_version > CASE_DATA_VERSION_SERD) {
fmd_hdl_free(hdl, zcp, sizeof (zfs_case_t));
return (NULL);
}
/*
* fmd_buf_read() will have already zeroed out the remainder of the
* buffer, so we don't have to do anything special if the version
* doesn't include the SERD engine name.
*/
if (zcp->zc_data.zc_has_remove_timer)
zcp->zc_remove_timer = fmd_timer_install(hdl, zcp,
NULL, zfs_remove_timeout);
uu_list_node_init(zcp, &zcp->zc_node, zfs_case_pool);
(void) uu_list_insert_before(zfs_cases, NULL, zcp);
fmd_case_setspecific(hdl, cp, zcp);
return (zcp);
}
void *
cmd_buf_read(fmd_hdl_t *hdl, fmd_case_t *cp, const char *bufname, size_t bufsz)
{
void *buf;
size_t sz;
if ((sz = fmd_buf_size(hdl, cp, bufname)) == 0) {
(void) cmd_set_errno(ENOENT);
return (NULL);
} else if (sz != bufsz) {
(void) cmd_set_errno(EINVAL);
return (NULL);
}
buf = fmd_hdl_alloc(hdl, bufsz, FMD_SLEEP);
fmd_buf_read(hdl, cp, bufname, buf, bufsz);
return (buf);
}
