diff options
author | Cédric Le Goater <clg@fr.ibm.com> | 2016-01-25 15:07:27 +0100 |
---|---|---|
committer | Timothy Pearson <tpearson@raptorengineering.com> | 2019-11-29 19:31:48 -0600 |
commit | 2d81a6ab49a23a2754e67a0955ae940e7b01c7f0 (patch) | |
tree | 2332e97687884c07b1b3920973636d44a9345cd7 | |
parent | 5be1340043dc3d11ab773d755e5bccab690e1920 (diff) | |
download | hqemu-2d81a6ab49a23a2754e67a0955ae940e7b01c7f0.zip hqemu-2d81a6ab49a23a2754e67a0955ae940e7b01c7f0.tar.gz |
ipmi: replace goto by a return statement
Each routine using the IPMI_ADD_RSP_DATA, IPMI_CHECK_CMD_LEN or
IPMI_CHECK_RESERVATION macros needs to define a goto label 'out' to
handle hidden errors. Using directly a return statement has the same
effect and it removes the fact that 'out' needs to be defined.
The code exits in ipmi_sim_handle_command() are a little different
from the rest and a "possible" error in the macro IPMI_ADD_RSP_DATA is
handled before making use of it. This might be a bit excessive as a
minimum response len is currently 300 bytes and the patch checks that
at least 3 are available.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-rw-r--r-- | hw/ipmi/ipmi_bmc_sim.c | 140 |
1 files changed, 41 insertions, 99 deletions
diff --git a/hw/ipmi/ipmi_bmc_sim.c b/hw/ipmi/ipmi_bmc_sim.c index dcdab03..1f06dfc 100644 --- a/hw/ipmi/ipmi_bmc_sim.c +++ b/hw/ipmi/ipmi_bmc_sim.c @@ -256,7 +256,7 @@ struct IPMIBmcSim { do { \ if (*rsp_len >= max_rsp_len) { \ rsp[2] = IPMI_CC_REQUEST_DATA_TRUNCATED; \ - goto out; \ + return; \ } \ rsp[(*rsp_len)++] = (b); \ } while (0) @@ -265,7 +265,7 @@ struct IPMIBmcSim { #define IPMI_CHECK_CMD_LEN(l) \ if (cmd_len < l) { \ rsp[2] = IPMI_CC_REQUEST_DATA_LENGTH_INVALID; \ - goto out; \ + return; \ } /* Check that the reservation in the command is valid. */ @@ -273,7 +273,7 @@ struct IPMIBmcSim { do { \ if ((cmd[off] | (cmd[off + 1] << 8)) != r) { \ rsp[2] = IPMI_CC_INVALID_RESERVATION; \ - goto out; \ + return; \ } \ } while (0) @@ -451,14 +451,12 @@ static void gen_event(IPMIBmcSim *ibs, unsigned int sens_num, uint8_t deassert, } if (ibs->msg_flags & IPMI_BMC_MSG_FLAG_EVT_BUF_FULL) { - goto out; + return; } memcpy(ibs->evtbuf, evt, 16); ibs->msg_flags |= IPMI_BMC_MSG_FLAG_EVT_BUF_FULL; k->set_atn(s, 1, attn_irq_enabled(ibs)); - out: - return; } static void sensor_set_discrete_bit(IPMIBmcSim *ibs, unsigned int sensor, @@ -579,6 +577,11 @@ static void ipmi_sim_handle_command(IPMIBmc *b, /* Set up the response, set the low bit of NETFN. */ /* Note that max_rsp_len must be at least 3 */ + if (max_rsp_len < 3) { + rsp[2] = IPMI_CC_REQUEST_DATA_TRUNCATED; + goto out; + } + IPMI_ADD_RSP_DATA(cmd[0] | 0x04); IPMI_ADD_RSP_DATA(cmd[1]); IPMI_ADD_RSP_DATA(0); /* Assume success */ @@ -696,8 +699,6 @@ static void chassis_capabilities(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA(ibs->parent.slave_addr); IPMI_ADD_RSP_DATA(ibs->parent.slave_addr); IPMI_ADD_RSP_DATA(ibs->parent.slave_addr); - out: - return; } static void chassis_status(IPMIBmcSim *ibs, @@ -709,8 +710,6 @@ static void chassis_status(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA(0); IPMI_ADD_RSP_DATA(0); IPMI_ADD_RSP_DATA(0); - out: - return; } static void chassis_control(IPMIBmcSim *ibs, @@ -744,10 +743,8 @@ static void chassis_control(IPMIBmcSim *ibs, break; default: rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } - out: - return; } static void get_device_id(IPMIBmcSim *ibs, @@ -766,8 +763,6 @@ static void get_device_id(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA(ibs->mfg_id[2]); IPMI_ADD_RSP_DATA(ibs->product_id[0]); IPMI_ADD_RSP_DATA(ibs->product_id[1]); - out: - return; } static void set_global_enables(IPMIBmcSim *ibs, uint8_t val) @@ -820,8 +815,6 @@ static void set_bmc_global_enables(IPMIBmcSim *ibs, { IPMI_CHECK_CMD_LEN(3); set_global_enables(ibs, cmd[2]); - out: - return; } static void get_bmc_global_enables(IPMIBmcSim *ibs, @@ -830,8 +823,6 @@ static void get_bmc_global_enables(IPMIBmcSim *ibs, unsigned int max_rsp_len) { IPMI_ADD_RSP_DATA(ibs->bmc_global_enables); - out: - return; } static void clr_msg_flags(IPMIBmcSim *ibs, @@ -845,8 +836,6 @@ static void clr_msg_flags(IPMIBmcSim *ibs, IPMI_CHECK_CMD_LEN(3); ibs->msg_flags &= ~cmd[2]; k->set_atn(s, attn_set(ibs), attn_irq_enabled(ibs)); - out: - return; } static void get_msg_flags(IPMIBmcSim *ibs, @@ -855,8 +844,6 @@ static void get_msg_flags(IPMIBmcSim *ibs, unsigned int max_rsp_len) { IPMI_ADD_RSP_DATA(ibs->msg_flags); - out: - return; } static void read_evt_msg_buf(IPMIBmcSim *ibs, @@ -870,15 +857,13 @@ static void read_evt_msg_buf(IPMIBmcSim *ibs, if (!(ibs->msg_flags & IPMI_BMC_MSG_FLAG_EVT_BUF_FULL)) { rsp[2] = 0x80; - goto out; + return; } for (i = 0; i < 16; i++) { IPMI_ADD_RSP_DATA(ibs->evtbuf[i]); } ibs->msg_flags &= ~IPMI_BMC_MSG_FLAG_EVT_BUF_FULL; k->set_atn(s, attn_set(ibs), attn_irq_enabled(ibs)); - out: - return; } static void get_msg(IPMIBmcSim *ibs, @@ -909,7 +894,7 @@ static void get_msg(IPMIBmcSim *ibs, k->set_atn(s, attn_set(ibs), attn_irq_enabled(ibs)); } - out: +out: qemu_mutex_unlock(&ibs->lock); return; } @@ -940,14 +925,14 @@ static void send_msg(IPMIBmcSim *ibs, if (cmd[2] != 0) { /* We only handle channel 0 with no options */ rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } IPMI_CHECK_CMD_LEN(10); if (cmd[3] != 0x40) { /* We only emulate a MC at address 0x40. */ rsp[2] = 0x83; /* NAK on write */ - goto out; + return; } cmd += 3; /* Skip the header. */ @@ -959,7 +944,7 @@ static void send_msg(IPMIBmcSim *ibs, */ if (ipmb_checksum(cmd, cmd_len, 0) != 0 || cmd[3] != 0x20) { /* Improper response address */ - goto out; /* No response */ + return; /* No response */ } netfn = cmd[1] >> 2; @@ -969,7 +954,7 @@ static void send_msg(IPMIBmcSim *ibs, if (rqLun != 2) { /* We only support LUN 2 coming back to us. */ - goto out; + return; } msg = g_malloc(sizeof(*msg)); @@ -1009,9 +994,6 @@ static void send_msg(IPMIBmcSim *ibs, ibs->msg_flags |= IPMI_BMC_MSG_FLAG_RCV_MSG_QUEUE; k->set_atn(s, 1, attn_irq_enabled(ibs)); qemu_mutex_unlock(&ibs->lock); - - out: - return; } static void do_watchdog_reset(IPMIBmcSim *ibs) @@ -1040,11 +1022,9 @@ static void reset_watchdog_timer(IPMIBmcSim *ibs, { if (!ibs->watchdog_initialized) { rsp[2] = 0x80; - goto out; + return; } do_watchdog_reset(ibs); - out: - return; } static void set_watchdog_timer(IPMIBmcSim *ibs, @@ -1060,7 +1040,7 @@ static void set_watchdog_timer(IPMIBmcSim *ibs, val = cmd[2] & 0x7; /* Validate use */ if (val == 0 || val > 5) { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } val = cmd[3] & 0x7; /* Validate action */ switch (val) { @@ -1084,7 +1064,7 @@ static void set_watchdog_timer(IPMIBmcSim *ibs, } if (rsp[2]) { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } val = (cmd[3] >> 4) & 0x7; /* Validate preaction */ @@ -1097,12 +1077,12 @@ static void set_watchdog_timer(IPMIBmcSim *ibs, if (!k->do_hw_op(s, IPMI_SEND_NMI, 1)) { /* NMI not supported. */ rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } default: /* We don't support PRE_SMI */ rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } ibs->watchdog_initialized = 1; @@ -1116,8 +1096,6 @@ static void set_watchdog_timer(IPMIBmcSim *ibs, } else { ibs->watchdog_running = 0; } - out: - return; } static void get_watchdog_timer(IPMIBmcSim *ibs, @@ -1139,8 +1117,6 @@ static void get_watchdog_timer(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA(0); IPMI_ADD_RSP_DATA(0); } - out: - return; } static void get_sdr_rep_info(IPMIBmcSim *ibs, @@ -1163,8 +1139,6 @@ static void get_sdr_rep_info(IPMIBmcSim *ibs, } /* Only modal support, reserve supported */ IPMI_ADD_RSP_DATA((ibs->sdr.overflow << 7) | 0x22); - out: - return; } static void reserve_sdr_rep(IPMIBmcSim *ibs, @@ -1174,8 +1148,6 @@ static void reserve_sdr_rep(IPMIBmcSim *ibs, { IPMI_ADD_RSP_DATA(ibs->sdr.reservation & 0xff); IPMI_ADD_RSP_DATA((ibs->sdr.reservation >> 8) & 0xff); - out: - return; } static void get_sdr(IPMIBmcSim *ibs, @@ -1194,11 +1166,11 @@ static void get_sdr(IPMIBmcSim *ibs, if (sdr_find_entry(&ibs->sdr, cmd[4] | (cmd[5] << 8), &pos, &nextrec)) { rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; - goto out; + return; } if (cmd[6] > (ibs->sdr.sdr[pos + 4])) { rsp[2] = IPMI_CC_PARM_OUT_OF_RANGE; - goto out; + return; } IPMI_ADD_RSP_DATA(nextrec & 0xff); @@ -1210,12 +1182,10 @@ static void get_sdr(IPMIBmcSim *ibs, if ((cmd[7] + *rsp_len) > max_rsp_len) { rsp[2] = IPMI_CC_CANNOT_RETURN_REQ_NUM_BYTES; - goto out; + return; } memcpy(rsp + *rsp_len, ibs->sdr.sdr + pos + cmd[6], cmd[7]); *rsp_len += cmd[7]; - out: - return; } static void add_sdr(IPMIBmcSim *ibs, @@ -1227,12 +1197,10 @@ static void add_sdr(IPMIBmcSim *ibs, if (sdr_add_entry(ibs, cmd + 2, cmd_len - 2, &recid)) { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } IPMI_ADD_RSP_DATA(recid & 0xff); IPMI_ADD_RSP_DATA((recid >> 8) & 0xff); - out: - return; } static void clear_sdr_rep(IPMIBmcSim *ibs, @@ -1244,7 +1212,7 @@ static void clear_sdr_rep(IPMIBmcSim *ibs, IPMI_CHECK_RESERVATION(2, ibs->sdr.reservation); if (cmd[4] != 'C' || cmd[5] != 'L' || cmd[6] != 'R') { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } if (cmd[7] == 0xaa) { ibs->sdr.next_free = 0; @@ -1256,10 +1224,8 @@ static void clear_sdr_rep(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA(1); /* Erasure complete */ } else { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } - out: - return; } static void get_sel_info(IPMIBmcSim *ibs, @@ -1283,8 +1249,6 @@ static void get_sel_info(IPMIBmcSim *ibs, } /* Only support Reserve SEL */ IPMI_ADD_RSP_DATA((ibs->sel.overflow << 7) | 0x02); - out: - return; } static void reserve_sel(IPMIBmcSim *ibs, @@ -1294,8 +1258,6 @@ static void reserve_sel(IPMIBmcSim *ibs, { IPMI_ADD_RSP_DATA(ibs->sel.reservation & 0xff); IPMI_ADD_RSP_DATA((ibs->sel.reservation >> 8) & 0xff); - out: - return; } static void get_sel_entry(IPMIBmcSim *ibs, @@ -1311,17 +1273,17 @@ static void get_sel_entry(IPMIBmcSim *ibs, } if (ibs->sel.next_free == 0) { rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; - goto out; + return; } if (cmd[6] > 15) { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } if (cmd[7] == 0xff) { cmd[7] = 16; } else if ((cmd[7] + cmd[6]) > 16) { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } else { cmd[7] += cmd[6]; } @@ -1331,7 +1293,7 @@ static void get_sel_entry(IPMIBmcSim *ibs, val = ibs->sel.next_free - 1; } else if (val >= ibs->sel.next_free) { rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; - goto out; + return; } if ((val + 1) == ibs->sel.next_free) { IPMI_ADD_RSP_DATA(0xff); @@ -1343,8 +1305,6 @@ static void get_sel_entry(IPMIBmcSim *ibs, for (; cmd[6] < cmd[7]; cmd[6]++) { IPMI_ADD_RSP_DATA(ibs->sel.sel[val][cmd[6]]); } - out: - return; } static void add_sel_entry(IPMIBmcSim *ibs, @@ -1355,13 +1315,11 @@ static void add_sel_entry(IPMIBmcSim *ibs, IPMI_CHECK_CMD_LEN(18); if (sel_add_event(ibs, cmd + 2)) { rsp[2] = IPMI_CC_OUT_OF_SPACE; - goto out; + return; } /* sel_add_event fills in the record number. */ IPMI_ADD_RSP_DATA(cmd[2]); IPMI_ADD_RSP_DATA(cmd[3]); - out: - return; } static void clear_sel(IPMIBmcSim *ibs, @@ -1373,7 +1331,7 @@ static void clear_sel(IPMIBmcSim *ibs, IPMI_CHECK_RESERVATION(2, ibs->sel.reservation); if (cmd[4] != 'C' || cmd[5] != 'L' || cmd[6] != 'R') { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } if (cmd[7] == 0xaa) { ibs->sel.next_free = 0; @@ -1385,10 +1343,8 @@ static void clear_sel(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA(1); /* Erasure complete */ } else { rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } - out: - return; } static void get_sel_time(IPMIBmcSim *ibs, @@ -1405,8 +1361,6 @@ static void get_sel_time(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA((val >> 8) & 0xff); IPMI_ADD_RSP_DATA((val >> 16) & 0xff); IPMI_ADD_RSP_DATA((val >> 24) & 0xff); - out: - return; } static void set_sel_time(IPMIBmcSim *ibs, @@ -1421,8 +1375,6 @@ static void set_sel_time(IPMIBmcSim *ibs, val = cmd[2] | (cmd[3] << 8) | (cmd[4] << 16) | (cmd[5] << 24); ipmi_gettime(&now); ibs->sel.time_offset = now.tv_sec - ((long) val); - out: - return; } static void set_sensor_evt_enable(IPMIBmcSim *ibs, @@ -1436,7 +1388,7 @@ static void set_sensor_evt_enable(IPMIBmcSim *ibs, if ((cmd[2] > MAX_SENSORS) || !IPMI_SENSOR_GET_PRESENT(ibs->sensors + cmd[2])) { rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; - goto out; + return; } sens = ibs->sensors + cmd[2]; switch ((cmd[3] >> 4) & 0x3) { @@ -1472,11 +1424,9 @@ static void set_sensor_evt_enable(IPMIBmcSim *ibs, break; case 3: rsp[2] = IPMI_CC_INVALID_DATA_FIELD; - goto out; + return; } IPMI_SENSOR_SET_RET_STATUS(sens, cmd[3]); - out: - return; } static void get_sensor_evt_enable(IPMIBmcSim *ibs, @@ -1490,7 +1440,7 @@ static void get_sensor_evt_enable(IPMIBmcSim *ibs, if ((cmd[2] > MAX_SENSORS) || !IPMI_SENSOR_GET_PRESENT(ibs->sensors + cmd[2])) { rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; - goto out; + return; } sens = ibs->sensors + cmd[2]; IPMI_ADD_RSP_DATA(IPMI_SENSOR_GET_RET_STATUS(sens)); @@ -1498,8 +1448,6 @@ static void get_sensor_evt_enable(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA((sens->assert_enable >> 8) & 0xff); IPMI_ADD_RSP_DATA(sens->deassert_enable & 0xff); IPMI_ADD_RSP_DATA((sens->deassert_enable >> 8) & 0xff); - out: - return; } static void rearm_sensor_evts(IPMIBmcSim *ibs, @@ -1513,17 +1461,15 @@ static void rearm_sensor_evts(IPMIBmcSim *ibs, if ((cmd[2] > MAX_SENSORS) || !IPMI_SENSOR_GET_PRESENT(ibs->sensors + cmd[2])) { rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; - goto out; + return; } sens = ibs->sensors + cmd[2]; if ((cmd[3] & 0x80) == 0) { /* Just clear everything */ sens->states = 0; - goto out; + return; } - out: - return; } static void get_sensor_evt_status(IPMIBmcSim *ibs, @@ -1537,7 +1483,7 @@ static void get_sensor_evt_status(IPMIBmcSim *ibs, if ((cmd[2] > MAX_SENSORS) || !IPMI_SENSOR_GET_PRESENT(ibs->sensors + cmd[2])) { rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; - goto out; + return; } sens = ibs->sensors + cmd[2]; IPMI_ADD_RSP_DATA(sens->reading); @@ -1546,8 +1492,6 @@ static void get_sensor_evt_status(IPMIBmcSim *ibs, IPMI_ADD_RSP_DATA((sens->assert_states >> 8) & 0xff); IPMI_ADD_RSP_DATA(sens->deassert_states & 0xff); IPMI_ADD_RSP_DATA((sens->deassert_states >> 8) & 0xff); - out: - return; } static void get_sensor_reading(IPMIBmcSim *ibs, @@ -1561,7 +1505,7 @@ static void get_sensor_reading(IPMIBmcSim *ibs, if ((cmd[2] > MAX_SENSORS) || !IPMI_SENSOR_GET_PRESENT(ibs->sensors + cmd[2])) { rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT; - goto out; + return; } sens = ibs->sensors + cmd[2]; IPMI_ADD_RSP_DATA(sens->reading); @@ -1570,8 +1514,6 @@ static void get_sensor_reading(IPMIBmcSim *ibs, if (IPMI_SENSOR_IS_DISCRETE(sens)) { IPMI_ADD_RSP_DATA((sens->states >> 8) & 0xff); } - out: - return; } static const IPMICmdHandler chassis_cmds[IPMI_NETFN_CHASSIS_MAXCMD] = { |