X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=lib%2Fpb-protocol%2Fpb-protocol.c;h=091fab722f102e9d9c186e8bec6900146737bcce;hp=fdf24471377160e9a3c51abb87c4197e4e034e1c;hb=263968fb67cdaa58e1ff8d9a35a72921ffbac7ef;hpb=0f29db72ec545322ea065c3b12c87b6fc7045b45 diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c index fdf2447..091fab7 100644 --- a/lib/pb-protocol/pb-protocol.c +++ b/lib/pb-protocol/pb-protocol.c @@ -2,6 +2,7 @@ #include #include #include +#include #include #include @@ -21,6 +22,7 @@ * action = 0x1: device add message * payload: * 4-byte len, id + * 1-byte type * 4-byte len, name * 4-byte len, description * 4-byte len, icon_file @@ -33,11 +35,21 @@ * 4-byte len, icon_file * 4-byte len, boot_image_file * 4-byte len, initrd_file + * 4-byte len, dtb_file * 4-byte len, boot_args * * action = 0x2: device remove message * payload: * 4-byte len, id + * + * action = 0x3: boot + * payload: + * 4-byte len, boot option id + * 4-byte len, boot_image_file + * 4-byte len, initrd_file + * 4-byte len, dtb_file + * 4-byte len, boot_args + * */ void pb_protocol_dump_device(const struct device *dev, const char *text, @@ -58,6 +70,7 @@ void pb_protocol_dump_device(const struct device *dev, const char *text, fprintf(stream, "%s\t\ticon: %s\n", text, opt->icon_file); fprintf(stream, "%s\t\tboot: %s\n", text, opt->boot_image_file); fprintf(stream, "%s\t\tinit: %s\n", text, opt->initrd_file); + fprintf(stream, "%s\t\tdtb: %s\n", text, opt->dtb_file); fprintf(stream, "%s\t\targs: %s\n", text, opt->boot_args); } } @@ -128,6 +141,18 @@ static int read_string(void *ctx, const char **pos, unsigned int *len, return 0; } +static int read_u32(const char **pos, unsigned int *len, unsigned int *p) +{ + if (*len < sizeof(uint32_t)) + return -1; + + *p = (unsigned int)__be32_to_cpu(*(uint32_t *)(*pos)); + *pos += sizeof(uint32_t); + *len -= sizeof(uint32_t); + + return 0; +} + char *pb_protocol_deserialise_string(void *ctx, const struct pb_protocol_message *message) { @@ -153,60 +178,290 @@ static int optional_strlen(const char *str) int pb_protocol_device_len(const struct device *dev) { - struct boot_option *opt; - int len; - - len = 4 + optional_strlen(dev->id) + + return 4 + optional_strlen(dev->id) + + sizeof(dev->type) + 4 + optional_strlen(dev->name) + 4 + optional_strlen(dev->description) + - 4 + optional_strlen(dev->icon_file) + + 4 + optional_strlen(dev->icon_file); +} + +int pb_protocol_boot_option_len(const struct boot_option *opt) +{ + + return 4 + optional_strlen(opt->device_id) + + 4 + optional_strlen(opt->id) + + 4 + optional_strlen(opt->name) + + 4 + optional_strlen(opt->description) + + 4 + optional_strlen(opt->icon_file) + + 4 + optional_strlen(opt->boot_image_file) + + 4 + optional_strlen(opt->initrd_file) + + 4 + optional_strlen(opt->dtb_file) + + 4 + optional_strlen(opt->boot_args) + + sizeof(opt->is_default); +} + +int pb_protocol_boot_len(const struct boot_command *boot) +{ + return 4 + optional_strlen(boot->option_id) + + 4 + optional_strlen(boot->boot_image_file) + + 4 + optional_strlen(boot->initrd_file) + + 4 + optional_strlen(boot->dtb_file) + + 4 + optional_strlen(boot->boot_args); +} + +int pb_protocol_boot_status_len(const struct boot_status *status) +{ + return 4 + + 4 + optional_strlen(status->message) + + 4 + optional_strlen(status->detail) + 4; +} - list_for_each_entry(&dev->boot_options, opt, list) { - len += 4 + optional_strlen(opt->id) + - 4 + optional_strlen(opt->name) + - 4 + optional_strlen(opt->description) + - 4 + optional_strlen(opt->icon_file) + - 4 + optional_strlen(opt->boot_image_file) + - 4 + optional_strlen(opt->initrd_file) + - 4 + optional_strlen(opt->boot_args); +int pb_protocol_system_info_len(const struct system_info *sysinfo) +{ + unsigned int len, i; + + len = 4 + optional_strlen(sysinfo->type) + + 4 + optional_strlen(sysinfo->identifier) + + 4 + 4; + + for (i = 0; i < sysinfo->n_interfaces; i++) { + struct interface_info *if_info = sysinfo->interfaces[i]; + len += 4 + if_info->hwaddr_size + + 4 + optional_strlen(if_info->name); + } + + for (i = 0; i < sysinfo->n_blockdevs; i++) { + struct blockdev_info *bd_info = sysinfo->blockdevs[i]; + len += 4 + optional_strlen(bd_info->name) + + 4 + optional_strlen(bd_info->uuid) + + 4 + optional_strlen(bd_info->mountpoint); } return len; } -int pb_protocol_serialise_device(const struct device *dev, char *buf, int buf_len) +static int pb_protocol_interface_config_len(struct interface_config *conf) { - struct boot_option *opt; - uint32_t n; - char *pos; + unsigned int len; + + len = sizeof(conf->hwaddr) + + 4 /* conf->ignore */; + + if (conf->ignore) + return len; + + len += 4 /* conf->method */; + + if (conf->method == CONFIG_METHOD_STATIC) { + len += 4 + optional_strlen(conf->static_config.address); + len += 4 + optional_strlen(conf->static_config.gateway); + } + + return len; +} + +int pb_protocol_config_len(const struct config *config) +{ + unsigned int i, len; + + len = 4 /* config->autoboot_enabled */ + + 4 /* config->autoboot_timeout_sec */; - pos = buf; + len += 4; + for (i = 0; i < config->network.n_interfaces; i++) + len += pb_protocol_interface_config_len( + config->network.interfaces[i]); + + len += 4; + for (i = 0; i < config->network.n_dns_servers; i++) + len += 4 + optional_strlen(config->network.dns_servers[i]); + + len += 4; + len += config->n_boot_priorities * 4; + + return len; +} + +int pb_protocol_serialise_device(const struct device *dev, + char *buf, int buf_len) +{ + char *pos = buf; - /* construct payload into buffer */ pos += pb_protocol_serialise_string(pos, dev->id); + *(enum device_type *)pos = dev->type; + pos += sizeof(enum device_type); pos += pb_protocol_serialise_string(pos, dev->name); pos += pb_protocol_serialise_string(pos, dev->description); pos += pb_protocol_serialise_string(pos, dev->icon_file); - /* write option count */ - n = 0; + assert(pos <= buf + buf_len); + (void)buf_len; + + return 0; +} + +int pb_protocol_serialise_boot_option(const struct boot_option *opt, + char *buf, int buf_len) +{ + char *pos = buf; + + pos += pb_protocol_serialise_string(pos, opt->device_id); + pos += pb_protocol_serialise_string(pos, opt->id); + pos += pb_protocol_serialise_string(pos, opt->name); + pos += pb_protocol_serialise_string(pos, opt->description); + pos += pb_protocol_serialise_string(pos, opt->icon_file); + pos += pb_protocol_serialise_string(pos, opt->boot_image_file); + pos += pb_protocol_serialise_string(pos, opt->initrd_file); + pos += pb_protocol_serialise_string(pos, opt->dtb_file); + pos += pb_protocol_serialise_string(pos, opt->boot_args); + + *(bool *)pos = opt->is_default; + pos += sizeof(bool); + + assert(pos <= buf + buf_len); + (void)buf_len; + + return 0; +} + +int pb_protocol_serialise_boot_command(const struct boot_command *boot, + char *buf, int buf_len) +{ + char *pos = buf; + + pos += pb_protocol_serialise_string(pos, boot->option_id); + pos += pb_protocol_serialise_string(pos, boot->boot_image_file); + pos += pb_protocol_serialise_string(pos, boot->initrd_file); + pos += pb_protocol_serialise_string(pos, boot->dtb_file); + pos += pb_protocol_serialise_string(pos, boot->boot_args); + + assert(pos <= buf + buf_len); + (void)buf_len; + + return 0; +} - list_for_each_entry(&dev->boot_options, opt, list) - n++; +int pb_protocol_serialise_boot_status(const struct boot_status *status, + char *buf, int buf_len) +{ + char *pos = buf; - *(uint32_t *)pos = __cpu_to_be32(n); + *(uint32_t *)pos = __cpu_to_be32(status->type); pos += sizeof(uint32_t); - /* write each option */ - list_for_each_entry(&dev->boot_options, opt, list) { - pos += pb_protocol_serialise_string(pos, opt->id); - pos += pb_protocol_serialise_string(pos, opt->name); - pos += pb_protocol_serialise_string(pos, opt->description); - pos += pb_protocol_serialise_string(pos, opt->icon_file); - pos += pb_protocol_serialise_string(pos, opt->boot_image_file); - pos += pb_protocol_serialise_string(pos, opt->initrd_file); - pos += pb_protocol_serialise_string(pos, opt->boot_args); + pos += pb_protocol_serialise_string(pos, status->message); + pos += pb_protocol_serialise_string(pos, status->detail); + + *(uint32_t *)pos = __cpu_to_be32(status->type); + pos += sizeof(uint32_t); + + assert(pos <= buf + buf_len); + (void)buf_len; + + return 0; +} + +int pb_protocol_serialise_system_info(const struct system_info *sysinfo, + char *buf, int buf_len) +{ + char *pos = buf; + unsigned int i; + + pos += pb_protocol_serialise_string(pos, sysinfo->type); + pos += pb_protocol_serialise_string(pos, sysinfo->identifier); + + *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_interfaces); + pos += sizeof(uint32_t); + + for (i = 0; i < sysinfo->n_interfaces; i++) { + struct interface_info *if_info = sysinfo->interfaces[i]; + + *(uint32_t *)pos = __cpu_to_be32(if_info->hwaddr_size); + pos += sizeof(uint32_t); + + memcpy(pos, if_info->hwaddr, if_info->hwaddr_size); + pos += if_info->hwaddr_size; + + pos += pb_protocol_serialise_string(pos, if_info->name); + } + + *(uint32_t *)pos = __cpu_to_be32(sysinfo->n_blockdevs); + pos += sizeof(uint32_t); + + for (i = 0; i < sysinfo->n_blockdevs; i++) { + struct blockdev_info *bd_info = sysinfo->blockdevs[i]; + + pos += pb_protocol_serialise_string(pos, bd_info->name); + pos += pb_protocol_serialise_string(pos, bd_info->uuid); + pos += pb_protocol_serialise_string(pos, bd_info->mountpoint); + } + + assert(pos <= buf + buf_len); + (void)buf_len; + + return 0; +} + +static int pb_protocol_serialise_config_interface(char *buf, + struct interface_config *conf) +{ + char *pos = buf; + + memcpy(pos, conf->hwaddr, sizeof(conf->hwaddr)); + pos += sizeof(conf->hwaddr); + + *(uint32_t *)pos = conf->ignore; + pos += 4; + + if (conf->ignore) + return pos - buf; + + *(uint32_t *)pos = __cpu_to_be32(conf->method); + pos += 4; + + if (conf->method == CONFIG_METHOD_STATIC) { + pos += pb_protocol_serialise_string(pos, + conf->static_config.address); + pos += pb_protocol_serialise_string(pos, + conf->static_config.gateway); + } + + return pos - buf; +} + +int pb_protocol_serialise_config(const struct config *config, + char *buf, int buf_len) +{ + char *pos = buf; + unsigned int i; + + *(uint32_t *)pos = config->autoboot_enabled; + pos += 4; + + *(uint32_t *)pos = __cpu_to_be32(config->autoboot_timeout_sec); + pos += 4; + + *(uint32_t *)pos = __cpu_to_be32(config->network.n_interfaces); + pos += 4; + for (i = 0; i < config->network.n_interfaces; i++) { + struct interface_config *iface = + config->network.interfaces[i]; + pos += pb_protocol_serialise_config_interface(pos, iface); + } + + *(uint32_t *)pos = __cpu_to_be32(config->network.n_dns_servers); + pos += 4; + for (i = 0; i < config->network.n_dns_servers; i++) { + pos += pb_protocol_serialise_string(pos, + config->network.dns_servers[i]); + } + + *(uint32_t *)pos = __cpu_to_be32(config->n_boot_priorities); + pos += 4; + for (i = 0; i < config->n_boot_priorities; i++) { + *(uint32_t *)pos = __cpu_to_be32(config->boot_priorities[i].type); + pos += 4; } assert(pos <= buf + buf_len); @@ -306,69 +561,331 @@ struct pb_protocol_message *pb_protocol_read_message(void *ctx, int fd) } -struct device *pb_protocol_deserialise_device(void *ctx, +int pb_protocol_deserialise_device(struct device *dev, const struct pb_protocol_message *message) { - struct device *dev; - const char *pos; - int i, n_options; unsigned int len; + const char *pos; + int rc = -1; len = message->payload_len; pos = message->payload; - dev = talloc(ctx, struct device); - if (read_string(dev, &pos, &len, &dev->id)) - goto out_err; + goto out; + + if (len < sizeof(enum device_type)) + goto out; + dev->type = *(enum device_type *)(pos); + pos += sizeof(enum device_type); + len -= sizeof(enum device_type); if (read_string(dev, &pos, &len, &dev->name)) - goto out_err; + goto out; if (read_string(dev, &pos, &len, &dev->description)) - goto out_err; + goto out; if (read_string(dev, &pos, &len, &dev->icon_file)) - goto out_err; + goto out; + + rc = 0; + +out: + return rc; +} + +int pb_protocol_deserialise_boot_option(struct boot_option *opt, + const struct pb_protocol_message *message) +{ + unsigned int len; + const char *pos; + int rc = -1; + + len = message->payload_len; + pos = message->payload; + + if (read_string(opt, &pos, &len, &opt->device_id)) + goto out; + + if (read_string(opt, &pos, &len, &opt->id)) + goto out; + + if (read_string(opt, &pos, &len, &opt->name)) + goto out; + + if (read_string(opt, &pos, &len, &opt->description)) + goto out; + + if (read_string(opt, &pos, &len, &opt->icon_file)) + goto out; + + if (read_string(opt, &pos, &len, &opt->boot_image_file)) + goto out; + + if (read_string(opt, &pos, &len, &opt->initrd_file)) + goto out; + + if (read_string(opt, &pos, &len, &opt->dtb_file)) + goto out; + + if (read_string(opt, &pos, &len, &opt->boot_args)) + goto out; + + if (len < sizeof(bool)) + goto out; + opt->is_default = *(bool *)(pos); + + rc = 0; + +out: + return rc; +} + +int pb_protocol_deserialise_boot_command(struct boot_command *cmd, + const struct pb_protocol_message *message) +{ + unsigned int len; + const char *pos; + int rc = -1; + + len = message->payload_len; + pos = message->payload; + + if (read_string(cmd, &pos, &len, &cmd->option_id)) + goto out; + + if (read_string(cmd, &pos, &len, &cmd->boot_image_file)) + goto out; + + if (read_string(cmd, &pos, &len, &cmd->initrd_file)) + goto out; + + if (read_string(cmd, &pos, &len, &cmd->dtb_file)) + goto out; + + if (read_string(cmd, &pos, &len, &cmd->boot_args)) + goto out; + + rc = 0; + +out: + return rc; +} + +int pb_protocol_deserialise_boot_status(struct boot_status *status, + const struct pb_protocol_message *message) +{ + unsigned int len; + const char *pos; + int rc = -1; + + len = message->payload_len; + pos = message->payload; + + /* first up, the type enum... */ + if (len < sizeof(uint32_t)) + goto out; + + status->type = __be32_to_cpu(*(uint32_t *)(pos)); + + switch (status->type) { + case BOOT_STATUS_ERROR: + case BOOT_STATUS_INFO: + break; + default: + goto out; + } - n_options = __be32_to_cpu(*(uint32_t *)pos); pos += sizeof(uint32_t); + len -= sizeof(uint32_t); + + /* message and detail strings */ + if (read_string(status, &pos, &len, &status->message)) + goto out; + + if (read_string(status, &pos, &len, &status->detail)) + goto out; + + /* and finally, progress */ + if (len < sizeof(uint32_t)) + goto out; + + status->progress = __be32_to_cpu(*(uint32_t *)(pos)); + + /* clamp to 100% */ + if (status->progress > 100) + status->progress = 100; + + rc = 0; + +out: + return rc; +} + +int pb_protocol_deserialise_system_info(struct system_info *sysinfo, + const struct pb_protocol_message *message) +{ + unsigned int len, i; + const char *pos; + int rc = -1; + + len = message->payload_len; + pos = message->payload; + + /* type and identifier strings */ + if (read_string(sysinfo, &pos, &len, &sysinfo->type)) + goto out; + + if (read_string(sysinfo, &pos, &len, &sysinfo->identifier)) + goto out; + + /* number of interfaces */ + if (read_u32(&pos, &len, &sysinfo->n_interfaces)) + goto out; + + sysinfo->interfaces = talloc_array(sysinfo, struct interface_info *, + sysinfo->n_interfaces); + + for (i = 0; i < sysinfo->n_interfaces; i++) { + struct interface_info *if_info = talloc(sysinfo, + struct interface_info); + + if (read_u32(&pos, &len, &if_info->hwaddr_size)) + goto out; + + if (len < if_info->hwaddr_size) + goto out; + + if_info->hwaddr = talloc_memdup(if_info, pos, + if_info->hwaddr_size); + pos += if_info->hwaddr_size; + len -= if_info->hwaddr_size; + + if (read_string(if_info, &pos, &len, &if_info->name)) + goto out; + + sysinfo->interfaces[i] = if_info; + } + + /* number of interfaces */ + if (read_u32(&pos, &len, &sysinfo->n_blockdevs)) + goto out; + + sysinfo->blockdevs = talloc_array(sysinfo, struct blockdev_info *, + sysinfo->n_blockdevs); + + for (i = 0; i < sysinfo->n_blockdevs; i++) { + struct blockdev_info *bd_info = talloc(sysinfo, + struct blockdev_info); + + if (read_string(bd_info, &pos, &len, &bd_info->name)) + goto out; + + if (read_string(bd_info, &pos, &len, &bd_info->uuid)) + goto out; + + if (read_string(bd_info, &pos, &len, &bd_info->mountpoint)) + goto out; + + sysinfo->blockdevs[i] = bd_info; + } + rc = 0; + +out: + return rc; +} + +static int pb_protocol_deserialise_config_interface(const char **buf, + unsigned int *len, struct interface_config *iface) +{ + unsigned int tmp; + + if (*len < sizeof(iface->hwaddr)) + return -1; + + memcpy(iface->hwaddr, *buf, sizeof(iface->hwaddr)); + *buf += sizeof(iface->hwaddr); + *len -= sizeof(iface->hwaddr); + + if (read_u32(buf, len, &tmp)) + return -1; + iface->ignore = !!tmp; + + if (iface->ignore) + return 0; + + if (read_u32(buf, len, &iface->method)) + return -1; + + if (iface->method == CONFIG_METHOD_STATIC) { + if (read_string(iface, buf, len, &iface->static_config.address)) + return -1; + + if (read_string(iface, buf, len, &iface->static_config.gateway)) + return -1; + } + + return 0; +} + +int pb_protocol_deserialise_config(struct config *config, + const struct pb_protocol_message *message) +{ + unsigned int len, i, tmp; + const char *pos; + int rc = -1; + + len = message->payload_len; + pos = message->payload; + + if (read_u32(&pos, &len, &tmp)) + goto out; + config->autoboot_enabled = !!tmp; + + if (read_u32(&pos, &len, &config->autoboot_timeout_sec)) + goto out; + + if (read_u32(&pos, &len, &config->network.n_interfaces)) + goto out; + + config->network.interfaces = talloc_array(config, + struct interface_config *, config->network.n_interfaces); + + for (i = 0; i < config->network.n_interfaces; i++) { + struct interface_config *iface = talloc_zero( + config->network.interfaces, + struct interface_config); + if (pb_protocol_deserialise_config_interface(&pos, &len, iface)) + goto out; + config->network.interfaces[i] = iface; + } + + if (read_u32(&pos, &len, &config->network.n_dns_servers)) + goto out; + config->network.dns_servers = talloc_array(config, const char *, + config->network.n_dns_servers); + + for (i = 0; i < config->network.n_dns_servers; i++) { + char *tmp; + if (read_string(config->network.dns_servers, &pos, &len, &tmp)) + goto out; + config->network.dns_servers[i] = tmp; + } + + if (read_u32(&pos, &len, &config->n_boot_priorities)) + goto out; + config->boot_priorities = talloc_array(config, struct boot_priority, + config->n_boot_priorities); - dev->n_options = n_options; - - list_init(&dev->boot_options); - - for (i = 0; i < n_options; i++) { - struct boot_option *opt; - - opt = talloc(dev, struct boot_option); - - if (read_string(opt, &pos, &len, &opt->id)) - goto out_err; - if (read_string(opt, &pos, &len, &opt->name)) - goto out_err; - if (read_string(opt, &pos, &len, - &opt->description)) - goto out_err; - if (read_string(opt, &pos, &len, - &opt->icon_file)) - goto out_err; - if (read_string(opt, &pos, &len, - &opt->boot_image_file)) - goto out_err; - if (read_string(opt, &pos, &len, - &opt->initrd_file)) - goto out_err; - if (read_string(opt, &pos, &len, - &opt->boot_args)) - goto out_err; - - list_add(&dev->boot_options, &opt->list); + for (i = 0; i < config->n_boot_priorities; i++) { + if (read_u32(&pos, &len, &tmp)) + goto out; + config->boot_priorities[i].type = tmp; } - return dev; + rc = 0; -out_err: - talloc_free(dev); - return NULL; +out: + return rc; }