discover: Skip malformed bootdev fields
[petitboot] / discover / platform-powerpc.c
index d777bc0e5b108e1ebfc8b99eb8d9d79a91d1da10..7370d7dcc20a21e78dacc57e2efc8ebe7e3cdb0f 100644 (file)
@@ -22,7 +22,7 @@
 static const char *partition = "common";
 static const char *sysparams_dir = "/sys/firmware/opal/sysparams/";
 static const char *devtree_dir = "/proc/device-tree/";
-static const int ipmi_timeout = 500; /* milliseconds */
+static const int ipmi_timeout = 5000; /* milliseconds. */
 
 struct param {
        char                    *name;
@@ -39,7 +39,8 @@ struct platform_powerpc {
                                struct platform_powerpc *platform,
                                uint8_t *bootdev, bool *persistent);
        int             (*clear_ipmi_bootdev)(
-                               struct platform_powerpc *platform);
+                               struct platform_powerpc *platform,
+                               bool persistent);
        int             (*set_os_boot_sensor)(
                                struct platform_powerpc *platform);
 };
@@ -52,6 +53,8 @@ static const char *known_params[] = {
        "petitboot,bootdevs",
        "petitboot,language",
        "petitboot,debug?",
+       "petitboot,write?",
+       "petitboot,snapshots?",
        NULL,
 };
 
@@ -176,7 +179,7 @@ static int write_nvram(struct platform_powerpc *platform)
        struct process *process;
        struct param *param;
        const char *argv[6];
-       int rc;
+       int rc = 0;
 
        argv[0] = "nvram";
        argv[1] = "--update-config";
@@ -435,7 +438,6 @@ static void populate_bootdev_config(struct platform_powerpc *platform,
 {
        struct autoboot_option *opt, *new = NULL;
        char *pos, *end, *old_dev = NULL;
-       const char delim = ' ';
        unsigned int n_new = 0;
        const char *val;
        bool conflict;
@@ -466,11 +468,9 @@ static void populate_bootdev_config(struct platform_powerpc *platform,
 
                if (read_bootdev(config, &pos, opt)) {
                        pb_log("bootdev config is in an unknown format "
-                              "(expected uuid:... or mac:...)");
+                              "(expected uuid:... or mac:...)\n");
                        talloc_free(opt);
-                       if (strchr(pos, delim))
-                               continue;
-                       return;
+                       continue;
                }
 
                new = talloc_realloc(config, new, struct autoboot_option,
@@ -547,6 +547,14 @@ static void populate_config(struct platform_powerpc *platform,
                val = get_param(platform, "petitboot,debug?");
                config->debug = val && !strcmp(val, "true");
        }
+
+       val = get_param(platform, "petitboot,write?");
+       if (val)
+               config->allow_writes = !strcmp(val, "true");
+
+       val = get_param(platform, "petitboot,snapshots?");
+       if (val)
+               config->disable_snapshots = !strcmp(val, "false");
 }
 
 static char *iface_config_str(void *ctx, struct interface_config *config)
@@ -663,7 +671,7 @@ static void update_bootdev_config(struct platform_powerpc *platform,
                                                opt->uuid, delim);
                                break;
                        }
-                       tmp = val = talloc_asprintf_append(val, boot_str);
+                       tmp = val = talloc_asprintf_append(val, "%s", boot_str);
        }
 
        update_string_config(platform, "petitboot,bootdevs", val);
@@ -691,6 +699,14 @@ static int update_config(struct platform_powerpc *platform,
                val = tmp = talloc_asprintf(platform, "%d",
                                config->autoboot_timeout_sec);
 
+       if (config->ipmi_bootdev == IPMI_BOOTDEV_INVALID &&
+           platform->clear_ipmi_bootdev) {
+               platform->clear_ipmi_bootdev(platform,
+                               config->ipmi_bootdev_persistent);
+               config->ipmi_bootdev = IPMI_BOOTDEV_NONE;
+               config->ipmi_bootdev_persistent = false;
+       }
+
        update_string_config(platform, "petitboot,timeout", val);
        if (tmp)
                talloc_free(tmp);
@@ -698,6 +714,12 @@ static int update_config(struct platform_powerpc *platform,
        val = config->lang ?: "";
        update_string_config(platform, "petitboot,language", val);
 
+       if (config->allow_writes == defaults->allow_writes)
+               val = "";
+       else
+               val = config->allow_writes ? "true" : "false";
+       update_string_config(platform, "petitboot,write?", val);
+
        update_network_config(platform, config);
 
        update_bootdev_config(platform, config);
@@ -734,9 +756,8 @@ static int read_bootdev_sysparam(const char *name, uint8_t *val)
        char path[50];
        int fd, rc;
 
-       strcpy(path, sysparams_dir);
-       assert(strlen(name) < sizeof(path) - strlen(path));
-       strcat(path, name);
+       assert(strlen(sysparams_dir) + strlen(name) < sizeof(path));
+       snprintf(path, sizeof(path), "%s%s", sysparams_dir, name);
 
        fd = open(path, O_RDONLY);
        if (fd < 0) {
@@ -770,9 +791,8 @@ static int write_bootdev_sysparam(const char *name, uint8_t val)
        char path[50];
        int fd, rc;
 
-       strcpy(path, sysparams_dir);
-       assert(strlen(name) < sizeof(path) - strlen(path));
-       strcat(path, name);
+       assert(strlen(sysparams_dir) + strlen(name) < sizeof(path));
+       snprintf(path, sizeof(path), "%s%s", sysparams_dir, name);
 
        fd = open(path, O_WRONLY);
        if (fd < 0) {
@@ -806,10 +826,16 @@ static int write_bootdev_sysparam(const char *name, uint8_t val)
 }
 
 static int clear_ipmi_bootdev_sysparams(
-               struct platform_powerpc *platform __attribute__((unused)))
+               struct platform_powerpc *platform __attribute__((unused)),
+               bool persistent)
 {
-       /* invalidate next-boot-device setting */
-       write_bootdev_sysparam("next-boot-device", 0xff);
+       if (persistent) {
+               /* invalidate default-boot-device setting */
+               write_bootdev_sysparam("default-boot-device", 0xff);
+       } else {
+               /* invalidate next-boot-device setting */
+               write_bootdev_sysparam("next-boot-device", 0xff);
+       }
        return 0;
 }
 
@@ -836,7 +862,8 @@ static int get_ipmi_bootdev_sysparams(
        return 0;
 }
 
-static int clear_ipmi_bootdev_ipmi(struct platform_powerpc *platform)
+static int clear_ipmi_bootdev_ipmi(struct platform_powerpc *platform,
+                                  bool persistent __attribute__((unused)))
 {
        uint16_t resp_len;
        uint8_t resp[1];
@@ -957,6 +984,31 @@ static int set_ipmi_os_boot_sensor(struct platform_powerpc *platform)
        return 0;
 }
 
+static void get_ipmi_bmc_mac(struct platform *p, uint8_t *buf)
+{
+       struct platform_powerpc *platform = p->platform_data;
+       uint16_t resp_len = 8;
+       uint8_t resp[8];
+       uint8_t req[] = { 0x1, 0x5, 0x0, 0x0 };
+       int i, rc;
+
+       rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_TRANSPORT,
+                       IPMI_CMD_TRANSPORT_GET_LAN_PARAMS,
+                       req, sizeof(req),
+                       resp, &resp_len,
+                       ipmi_timeout);
+
+       pb_debug("BMC MAC resp [%d][%d]:\n", rc, resp_len);
+
+       if (rc == 0 && resp_len > 0) {
+               for (i = 2; i < resp_len; i++) {
+                       pb_debug(" %x", resp[i]);
+                       buf[i - 2] = resp[i];
+               }
+               pb_debug("\n");
+       }
+}
+
 static int load_config(struct platform *p, struct config *config)
 {
        struct platform_powerpc *platform = to_platform_powerpc(p);
@@ -1001,7 +1053,7 @@ static void pre_boot(struct platform *p, const struct config *config)
        struct platform_powerpc *platform = to_platform_powerpc(p);
 
        if (!config->ipmi_bootdev_persistent && platform->clear_ipmi_bootdev)
-               platform->clear_ipmi_bootdev(platform);
+               platform->clear_ipmi_bootdev(platform, false);
 
        if (platform->set_os_boot_sensor)
                platform->set_os_boot_sensor(platform);
@@ -1025,6 +1077,10 @@ static int get_sysinfo(struct platform *p, struct system_info *sysinfo)
                sysinfo->identifier = talloc_steal(sysinfo, buf);
        talloc_free(filename);
 
+       sysinfo->bmc_mac = talloc_zero_size(sysinfo, HWADDR_SIZE);
+       if (platform->ipmi)
+               get_ipmi_bmc_mac(p, sysinfo->bmc_mac);
+
        return 0;
 }
 
@@ -1053,7 +1109,6 @@ static bool probe(struct platform *p, void *ctx)
                platform->get_ipmi_bootdev = get_ipmi_bootdev_ipmi;
                platform->clear_ipmi_bootdev = clear_ipmi_bootdev_ipmi;
                platform->set_os_boot_sensor = set_ipmi_os_boot_sensor;
-
        } else if (!stat(sysparams_dir, &statbuf)) {
                pb_debug("platform: using sysparams for IPMI paramters\n");
                platform->get_ipmi_bootdev = get_ipmi_bootdev_sysparams;