static int
_zed_event_add_string_array(uint64_t eid, zed_strings_t *zsp,
const char *prefix, nvpair_t *nvp)
{
char buf[MAXBUF];
int buflen = sizeof (buf);
const char *name;
char **strp;
uint_t nelem;
uint_t i;
char *p;
int n;
assert((nvp != NULL) && (nvpair_type(nvp) == DATA_TYPE_STRING_ARRAY));
name = nvpair_name(nvp);
(void) nvpair_value_string_array(nvp, &strp, &nelem);
for (i = 0, p = buf; (i < nelem) && (buflen > 0); i++) {
n = snprintf(p, buflen, "%s ", strp[i] ? strp[i] : "<NULL>");
if ((n < 0) || (n >= buflen))
return (_zed_event_add_array_err(eid, name));
p += n;
buflen -= n;
}
if (nelem > 0)
*--p = '\0';
return (_zed_event_add_var(eid, zsp, prefix, name, "%s", buf));
}
static int
_zed_event_add_uint64_array(uint64_t eid, zed_strings_t *zsp,
const char *prefix, nvpair_t *nvp)
{
char buf[MAXBUF];
int buflen = sizeof (buf);
const char *name;
const char *fmt;
uint64_t *u64p;
uint_t nelem;
uint_t i;
char *p;
int n;
assert((nvp != NULL) && (nvpair_type(nvp) == DATA_TYPE_UINT64_ARRAY));
name = nvpair_name(nvp);
fmt = _zed_event_value_is_hex(name) ? "0x%.16llX " : "%llu ";
(void) nvpair_value_uint64_array(nvp, &u64p, &nelem);
for (i = 0, p = buf; (i < nelem) && (buflen > 0); i++) {
n = snprintf(p, buflen, fmt, (u_longlong_t) u64p[i]);
if ((n < 0) || (n >= buflen))
return (_zed_event_add_array_err(eid, name));
p += n;
buflen -= n;
}
if (nelem > 0)
*--p = '\0';
return (_zed_event_add_var(eid, zsp, prefix, name, "%s", buf));
}
/*
* Preserve specified variables from the parent environment
* when constructing the environment for the child process.
*
* Reference: Secure Programming Cookbook by Viega & Messier, Section 1.1.
*/
static void
_zed_event_add_env_preserve(uint64_t eid, zed_strings_t *zsp)
{
const char *env_preserve[] = {
"TZ",
NULL
};
const char **keyp;
const char *val;
assert(zsp != NULL);
for (keyp = env_preserve; *keyp; keyp++) {
if ((val = getenv(*keyp)))
_zed_event_add_var(eid, zsp, NULL, *keyp, "%s", val);
}
}
/*
* Preserve specified variables from the parent environment
* when constructing the environment for the child process.
*
* Reference: Secure Programming Cookbook by Viega & Messier, Section 1.1.
*/
static void
_zed_event_add_env_preserve(uint64_t eid, zed_strings_t *zsp)
{
const char *env_preserve[] = {
"TZ",
NULL
};
const char **pp;
const char *p;
assert(zsp != NULL);
for (pp = env_preserve; *pp; pp++) {
if ((p = getenv(*pp)))
_zed_event_add_var(eid, zsp, "%s=%s", *pp, p);
}
}
/*
* Restrict various environment variables to safe and sane values
* when constructing the environment for the child process.
*
* Reference: Secure Programming Cookbook by Viega & Messier, Section 1.1.
*/
static void
_zed_event_add_env_restrict(uint64_t eid, zed_strings_t *zsp)
{
const char *env_restrict[][2] = {
{ "IFS", " \t\n" },
{ "PATH", _PATH_STDPATH },
{ "ZDB", SBINDIR "/zdb" },
{ "ZED", SBINDIR "/zed" },
{ "ZFS", SBINDIR "/zfs" },
{ "ZINJECT", SBINDIR "/zinject" },
{ "ZPOOL", SBINDIR "/zpool" },
{ "ZFS_ALIAS", ZFS_META_ALIAS },
{ "ZFS_VERSION", ZFS_META_VERSION },
{ "ZFS_RELEASE", ZFS_META_RELEASE },
{ NULL, NULL }
};
const char *(*pa)[2];
assert(zsp != NULL);
for (pa = env_restrict; *(*pa); pa++) {
_zed_event_add_var(eid, zsp, NULL, (*pa)[0], "%s", (*pa)[1]);
}
}
/*
* Restrict various environment variables to safe and sane values
* when constructing the environment for the child process.
*
* Reference: Secure Programming Cookbook by Viega & Messier, Section 1.1.
*/
static void
_zed_event_add_env_restrict(uint64_t eid, zed_strings_t *zsp)
{
const char *env_restrict[] = {
"IFS= \t\n",
"PATH=" _PATH_STDPATH,
"ZDB=" SBINDIR "/zdb",
"ZED=" SBINDIR "/zed",
"ZFS=" SBINDIR "/zfs",
"ZINJECT=" SBINDIR "/zinject",
"ZPOOL=" SBINDIR "/zpool",
"ZFS_ALIAS=" ZFS_META_ALIAS,
"ZFS_VERSION=" ZFS_META_VERSION,
"ZFS_RELEASE=" ZFS_META_RELEASE,
NULL
};
const char **pp;
assert(zsp != NULL);
for (pp = env_restrict; *pp; pp++) {
_zed_event_add_var(eid, zsp, "%s", *pp);
}
}
/*
* Convert the nvpair [nvp] to a string which is added to the environment
* of the child process.
* Return 0 on success, -1 on error.
*
* FIXME: Refactor with cmd/zpool/zpool_main.c:zpool_do_events_nvprint()?
*/
static void
_zed_event_add_nvpair(uint64_t eid, zed_strings_t *zsp, nvpair_t *nvp)
{
const char *name;
data_type_t type;
const char *prefix = ZEVENT_VAR_PREFIX;
boolean_t b;
double d;
uint8_t i8;
uint16_t i16;
uint32_t i32;
uint64_t i64;
char *str;
assert(zsp != NULL);
assert(nvp != NULL);
name = nvpair_name(nvp);
type = nvpair_type(nvp);
switch (type) {
case DATA_TYPE_BOOLEAN:
_zed_event_add_var(eid, zsp, prefix, name, "%s", "1");
break;
case DATA_TYPE_BOOLEAN_VALUE:
(void) nvpair_value_boolean_value(nvp, &b);
_zed_event_add_var(eid, zsp, prefix, name, "%s", b ? "1" : "0");
break;
case DATA_TYPE_BYTE:
(void) nvpair_value_byte(nvp, &i8);
_zed_event_add_var(eid, zsp, prefix, name, "%d", i8);
break;
case DATA_TYPE_INT8:
(void) nvpair_value_int8(nvp, (int8_t *) &i8);
_zed_event_add_var(eid, zsp, prefix, name, "%d", i8);
break;
case DATA_TYPE_UINT8:
(void) nvpair_value_uint8(nvp, &i8);
_zed_event_add_var(eid, zsp, prefix, name, "%u", i8);
break;
case DATA_TYPE_INT16:
(void) nvpair_value_int16(nvp, (int16_t *) &i16);
_zed_event_add_var(eid, zsp, prefix, name, "%d", i16);
break;
case DATA_TYPE_UINT16:
(void) nvpair_value_uint16(nvp, &i16);
_zed_event_add_var(eid, zsp, prefix, name, "%u", i16);
break;
case DATA_TYPE_INT32:
(void) nvpair_value_int32(nvp, (int32_t *) &i32);
_zed_event_add_var(eid, zsp, prefix, name, "%d", i32);
break;
case DATA_TYPE_UINT32:
(void) nvpair_value_uint32(nvp, &i32);
_zed_event_add_var(eid, zsp, prefix, name, "%u", i32);
break;
case DATA_TYPE_INT64:
(void) nvpair_value_int64(nvp, (int64_t *) &i64);
_zed_event_add_var(eid, zsp, prefix, name,
"%lld", (longlong_t) i64);
break;
case DATA_TYPE_UINT64:
(void) nvpair_value_uint64(nvp, &i64);
_zed_event_add_var(eid, zsp, prefix, name,
(_zed_event_value_is_hex(name) ? "0x%.16llX" : "%llu"),
(u_longlong_t) i64);
/*
* shadow readable strings for vdev state pairs
*/
if (strcmp(name, FM_EREPORT_PAYLOAD_ZFS_VDEV_STATE) == 0 ||
strcmp(name, FM_EREPORT_PAYLOAD_ZFS_VDEV_LASTSTATE) == 0) {
char alt[32];
(void) snprintf(alt, sizeof (alt), "%s_str", name);
_zed_event_add_var(eid, zsp, prefix, alt, "%s",
zpool_state_to_name(i64, VDEV_AUX_NONE));
}
break;
case DATA_TYPE_DOUBLE:
(void) nvpair_value_double(nvp, &d);
_zed_event_add_var(eid, zsp, prefix, name, "%g", d);
break;
case DATA_TYPE_HRTIME:
(void) nvpair_value_hrtime(nvp, (hrtime_t *) &i64);
_zed_event_add_var(eid, zsp, prefix, name,
"%llu", (u_longlong_t) i64);
break;
case DATA_TYPE_NVLIST:
_zed_event_add_var(eid, zsp, prefix, name,
"%s", "_NOT_IMPLEMENTED_"); /* FIXME */
break;
case DATA_TYPE_STRING:
(void) nvpair_value_string(nvp, &str);
_zed_event_add_var(eid, zsp, prefix, name,
"%s", (str ? str : "<NULL>"));
break;
case DATA_TYPE_BOOLEAN_ARRAY:
_zed_event_add_var(eid, zsp, prefix, name,
"%s", "_NOT_IMPLEMENTED_"); /* FIXME */
break;
case DATA_TYPE_BYTE_ARRAY:
_zed_event_add_var(eid, zsp, prefix, name,
"%s", "_NOT_IMPLEMENTED_"); /* FIXME */
break;
case DATA_TYPE_INT8_ARRAY:
_zed_event_add_int8_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_UINT8_ARRAY:
_zed_event_add_uint8_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_INT16_ARRAY:
_zed_event_add_int16_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_UINT16_ARRAY:
_zed_event_add_uint16_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_INT32_ARRAY:
_zed_event_add_int32_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_UINT32_ARRAY:
_zed_event_add_uint32_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_INT64_ARRAY:
_zed_event_add_int64_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_UINT64_ARRAY:
_zed_event_add_uint64_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_STRING_ARRAY:
_zed_event_add_string_array(eid, zsp, prefix, nvp);
break;
case DATA_TYPE_NVLIST_ARRAY:
_zed_event_add_var(eid, zsp, prefix, name,
"%s", "_NOT_IMPLEMENTED_"); /* FIXME */
break;
default:
errno = EINVAL;
zed_log_msg(LOG_WARNING,
"Failed to convert nvpair \"%s\" for eid=%llu: "
"Unrecognized type=%u", name, eid, (unsigned int) type);
break;
}
}
