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author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-08-15 15:23:17 +0800 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-10-02 08:57:07 +0200 |
commit | 91b563613e5c831998210a2c500ec4d2492a650b (patch) | |
tree | ac3c8166fcbddbc781c0ef04fa7a43a4fe33f3d9 /net | |
parent | 3facad280b185d419cd554c69e0c0577253c028b (diff) | |
download | barebox-91b563613e5c831998210a2c500ec4d2492a650b.tar.gz barebox-91b563613e5c831998210a2c500ec4d2492a650b.tar.xz |
dhcp: switch to global var support
This way you can specify as previously set the dhcp parameter via global.dhcp.xxx
and get the result via global.dhcp.xxx
This is need for the defaultenv-2 to add the bootp suppport.
Use it on defaultenv too to have only one set of var.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'net')
-rw-r--r-- | net/dhcp.c | 119 |
1 files changed, 100 insertions, 19 deletions
diff --git a/net/dhcp.c b/net/dhcp.c index e73cc70ac0..b4f28302de 100644 --- a/net/dhcp.c +++ b/net/dhcp.c @@ -19,6 +19,8 @@ #include <magicvar.h> #include <linux/err.h> #include <getopt.h> +#include <globalvar.h> +#include <init.h> #define OPT_SIZE 312 /* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */ @@ -78,11 +80,38 @@ static IPaddr_t net_dhcp_server_ip; static uint64_t dhcp_start; static char dhcp_tftpname[256]; +static const char* dhcp_get_barebox_global(const char * var) +{ + char * var_global = asprintf("global.dhcp.%s", var); + const char *val; + + if (!var_global) + return NULL; + + val = getenv(var_global); + free(var_global); + return val; +} + +static int dhcp_set_barebox_global(const char * var, char *val) +{ + char * var_global = asprintf("global.dhcp.%s", var); + int ret; + + if (!var_global) + return -ENOMEM; + + ret = setenv(var_global, val); + free(var_global); + return ret; +} + struct dhcp_opt { unsigned char option; /* request automatically the option when creating the DHCP request */ bool optional; const char *barebox_var_name; + const char *barebox_dhcp_global; void (*handle)(struct dhcp_opt *opt, unsigned char *data, int tlen); void *data; @@ -123,7 +152,12 @@ static void env_str_handle(struct dhcp_opt *opt, unsigned char *popt, int optlen memcpy(tmp, popt, optlen); tmp[optlen] = 0; - setenv(opt->barebox_var_name, tmp); + + if (opt->barebox_var_name) + setenv(opt->barebox_var_name, tmp); + if (opt->barebox_dhcp_global) + dhcp_set_barebox_global(opt->barebox_dhcp_global, tmp); + } static void copy_uint32_handle(struct dhcp_opt *opt, unsigned char *popt, int optlen) @@ -183,7 +217,7 @@ struct dhcp_opt dhcp_options[] = { }, { .option = 17, .handle = env_str_handle, - .barebox_var_name = "rootpath", + .barebox_dhcp_global = "rootpath", }, { .option = 51, .handle = copy_uint32_handle, @@ -196,22 +230,23 @@ struct dhcp_opt dhcp_options[] = { }, { .option = 66, .handle = env_str_handle, - .barebox_var_name = "dhcp_tftp_server_name", + .barebox_dhcp_global = "tftp_server_name", .data = dhcp_tftpname, }, { .option = 67, .handle = bootfile_vendorex_handle, - .barebox_var_name = "bootfile", + .barebox_dhcp_global = "bootfile", }, { .option = 224, .handle = env_str_handle, - .barebox_var_name = "dhcp_oftree_file", + .barebox_dhcp_global = "oftree_file", }, }; struct dhcp_param { unsigned char option; const char *barebox_var_name; + const char *barebox_dhcp_global; int (*handle)(struct dhcp_param *param, u8 *e); void *data; }; @@ -224,6 +259,9 @@ static int dhcp_set_string_options(struct dhcp_param *param, u8 *e) if (!str && param->barebox_var_name) str = (char*)getenv(param->barebox_var_name); + if (!str && param->barebox_dhcp_global) + str = (char*)dhcp_get_barebox_global(param->barebox_dhcp_global); + if (!str) return 0; @@ -252,19 +290,19 @@ struct dhcp_param dhcp_params[] = { }, { .option = DHCP_VENDOR_ID, .handle = dhcp_set_string_options, - .barebox_var_name = "dhcp_vendor_id", + .barebox_dhcp_global = "vendor_id", }, { .option = DHCP_CLIENT_ID, .handle = dhcp_set_string_options, - .barebox_var_name = "dhcp_client_id", + .barebox_dhcp_global = "client_id", }, { .option = DHCP_USER_CLASS, .handle = dhcp_set_string_options, - .barebox_var_name = "dhcp_user_class", + .barebox_dhcp_global = "user_class", }, { .option = DHCP_CLIENT_UUID, .handle = dhcp_set_string_options, - .barebox_var_name = "dhcp_client_uuid", + .barebox_dhcp_global = "client_uuid", } }; @@ -345,8 +383,10 @@ static void bootp_copy_net_params(struct bootp *bp) if (tmp_ip != 0) net_set_serverip(tmp_ip); - if (strlen(bp->bp_file) > 0) + if (strlen(bp->bp_file) > 0) { setenv("bootfile", bp->bp_file); + dhcp_set_barebox_global("bootfile", bp->bp_file); + } debug("bootfile: %s\n", bp->bp_file); } @@ -611,9 +651,50 @@ static void dhcp_reset_env(void) continue; setenv(opt->barebox_var_name,""); + if (opt->barebox_dhcp_global) + dhcp_set_barebox_global(opt->barebox_dhcp_global,""); } } +static void dhcp_global_add(const char *var) +{ + char * var_global = asprintf("dhcp.%s", var); + + if (!var_global) + return; + + globalvar_add_simple(var_global); + free(var_global); +} + +static int dhcp_global_init(void) +{ + struct dhcp_opt *opt; + struct dhcp_param *param; + int i; + + for (i = 0; i < ARRAY_SIZE(dhcp_options); i++) { + opt = &dhcp_options[i]; + + if (!opt->barebox_dhcp_global) + continue; + + dhcp_global_add(opt->barebox_dhcp_global); + } + + for (i = 0; i < ARRAY_SIZE(dhcp_params); i++) { + param = &dhcp_params[i]; + + if (!param->barebox_dhcp_global) + continue; + + dhcp_global_add(param->barebox_dhcp_global); + } + + return 0; +} +late_initcall(dhcp_global_init); + static int do_dhcp(int argc, char *argv[]) { int ret, opt; @@ -709,12 +790,12 @@ BAREBOX_CMD_START(dhcp) BAREBOX_CMD_COMPLETE(empty_complete) BAREBOX_CMD_END -BAREBOX_MAGICVAR(bootfile, "bootfile returned from DHCP request"); -BAREBOX_MAGICVAR(hostname, "hostname to send or returned from DHCP request"); -BAREBOX_MAGICVAR(rootpath, "rootpath returned from DHCP request"); -BAREBOX_MAGICVAR(dhcp_vendor_id, "vendor id to send to the DHCP server"); -BAREBOX_MAGICVAR(dhcp_client_uuid, "cliend uuid to send to the DHCP server"); -BAREBOX_MAGICVAR(dhcp_client_id, "cliend id to send to the DHCP server"); -BAREBOX_MAGICVAR(dhcp_user_class, "user class to send to the DHCP server"); -BAREBOX_MAGICVAR(dhcp_tftp_server_name, "TFTP server Name returned from DHCP request"); -BAREBOX_MAGICVAR(dhcp_oftree_file, "OF tree returned from DHCP request (option 224)"); +BAREBOX_MAGICVAR_NAMED(global_hostname, global.hostname, "hostname to send or returned from DHCP request"); +BAREBOX_MAGICVAR_NAMED(global_dhcp_bootfile, global.dhcp.bootfile, "bootfile returned from DHCP request"); +BAREBOX_MAGICVAR_NAMED(global_dhcp_rootpath, global.dhcp.rootpath, "rootpath returned from DHCP request"); +BAREBOX_MAGICVAR_NAMED(global_dhcp_vendor_id, global.dhcp.vendor_id, "vendor id to send to the DHCP server"); +BAREBOX_MAGICVAR_NAMED(global_dhcp_client_uuid, global.dhcp.client_uuid, "cliend uuid to send to the DHCP server"); +BAREBOX_MAGICVAR_NAMED(global_dhcp_client_id, global.dhcp.client_id, "cliend id to send to the DHCP server"); +BAREBOX_MAGICVAR_NAMED(global_dhcp_user_class, global.dhcp.user_class, "user class to send to the DHCP server"); +BAREBOX_MAGICVAR_NAMED(global_dhcp_tftp_server_name, global.dhcp.tftp_server_name, "TFTP server Name returned from DHCP request"); +BAREBOX_MAGICVAR_NAMED(global_dhcp_oftree_file, global.dhcp.oftree_file, "OF tree returned from DHCP request (option 224)"); 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