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yaml --- r: 59092 b: refs/heads/master c: 4f5c791 h: refs/heads/master v: v3
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Lennart Poettering
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Greg Kroah-Hartman
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Jul 11, 2007
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: cfc94cdf8e0f14e692a5a40ef3cc10f464b2511b | ||
| refs/heads/master: 4f5c791a850e5305a5b1b48d0e4b4de248dc96f9 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,222 @@ | ||
| /* | ||
| * Export SMBIOS/DMI info via sysfs to userspace | ||
| * | ||
| * Copyright 2007, Lennart Poettering | ||
| * | ||
| * Licensed under GPLv2 | ||
| */ | ||
|
|
||
| #include <linux/module.h> | ||
| #include <linux/kernel.h> | ||
| #include <linux/init.h> | ||
| #include <linux/dmi.h> | ||
| #include <linux/device.h> | ||
| #include <linux/autoconf.h> | ||
|
|
||
| #define DEFINE_DMI_ATTR(_name, _mode, _show) \ | ||
| static struct device_attribute sys_dmi_##_name##_attr = \ | ||
| __ATTR(_name, _mode, _show, NULL); | ||
|
|
||
| #define DEFINE_DMI_ATTR_WITH_SHOW(_name, _mode, _field) \ | ||
| static ssize_t sys_dmi_##_name##_show(struct device *dev, \ | ||
| struct device_attribute *attr, \ | ||
| char *page) \ | ||
| { \ | ||
| ssize_t len; \ | ||
| len = scnprintf(page, PAGE_SIZE, "%s\n", dmi_get_system_info(_field)); \ | ||
| page[len-1] = '\n'; \ | ||
| return len; \ | ||
| } \ | ||
| DEFINE_DMI_ATTR(_name, _mode, sys_dmi_##_name##_show); | ||
|
|
||
| DEFINE_DMI_ATTR_WITH_SHOW(bios_vendor, 0444, DMI_BIOS_VENDOR); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(bios_version, 0444, DMI_BIOS_VERSION); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(bios_date, 0444, DMI_BIOS_DATE); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(sys_vendor, 0444, DMI_SYS_VENDOR); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(product_name, 0444, DMI_PRODUCT_NAME); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(product_version, 0444, DMI_PRODUCT_VERSION); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(product_serial, 0400, DMI_PRODUCT_SERIAL); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(product_uuid, 0400, DMI_PRODUCT_UUID); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(board_vendor, 0444, DMI_BOARD_VENDOR); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(board_name, 0444, DMI_BOARD_NAME); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(board_version, 0444, DMI_BOARD_VERSION); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(board_serial, 0400, DMI_BOARD_SERIAL); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(board_asset_tag, 0444, DMI_BOARD_ASSET_TAG); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(chassis_vendor, 0444, DMI_CHASSIS_VENDOR); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(chassis_type, 0444, DMI_CHASSIS_TYPE); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(chassis_version, 0444, DMI_CHASSIS_VERSION); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(chassis_serial, 0400, DMI_CHASSIS_SERIAL); | ||
| DEFINE_DMI_ATTR_WITH_SHOW(chassis_asset_tag, 0444, DMI_CHASSIS_ASSET_TAG); | ||
|
|
||
| static void ascii_filter(char *d, const char *s) | ||
| { | ||
| /* Filter out characters we don't want to see in the modalias string */ | ||
| for (; *s; s++) | ||
| if (*s > ' ' && *s < 127 && *s != ':') | ||
| *(d++) = *s; | ||
|
|
||
| *d = 0; | ||
| } | ||
|
|
||
| static ssize_t get_modalias(char *buffer, size_t buffer_size) | ||
| { | ||
| static const struct mafield { | ||
| const char *prefix; | ||
| int field; | ||
| } fields[] = { | ||
| { "bvn", DMI_BIOS_VENDOR }, | ||
| { "bvr", DMI_BIOS_VERSION }, | ||
| { "bd", DMI_BIOS_DATE }, | ||
| { "svn", DMI_SYS_VENDOR }, | ||
| { "pn", DMI_PRODUCT_NAME }, | ||
| { "pvr", DMI_PRODUCT_VERSION }, | ||
| { "rvn", DMI_BOARD_VENDOR }, | ||
| { "rn", DMI_BOARD_NAME }, | ||
| { "rvr", DMI_BOARD_VERSION }, | ||
| { "cvn", DMI_CHASSIS_VENDOR }, | ||
| { "ct", DMI_CHASSIS_TYPE }, | ||
| { "cvr", DMI_CHASSIS_VERSION }, | ||
| { NULL, DMI_NONE } | ||
| }; | ||
|
|
||
| ssize_t l, left; | ||
| char *p; | ||
| const struct mafield *f; | ||
|
|
||
| strcpy(buffer, "dmi"); | ||
| p = buffer + 3; left = buffer_size - 4; | ||
|
|
||
| for (f = fields; f->prefix && left > 0; f++) { | ||
| const char *c; | ||
| char *t; | ||
|
|
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| c = dmi_get_system_info(f->field); | ||
| if (!c) | ||
| continue; | ||
|
|
||
| t = kmalloc(strlen(c) + 1, GFP_KERNEL); | ||
| if (!t) | ||
| break; | ||
| ascii_filter(t, c); | ||
| l = scnprintf(p, left, ":%s%s", f->prefix, t); | ||
| kfree(t); | ||
|
|
||
| p += l; | ||
| left -= l; | ||
| } | ||
|
|
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| p[0] = ':'; | ||
| p[1] = 0; | ||
|
|
||
| return p - buffer + 1; | ||
| } | ||
|
|
||
| static ssize_t sys_dmi_modalias_show(struct device *dev, | ||
| struct device_attribute *attr, char *page) | ||
| { | ||
| ssize_t r; | ||
| r = get_modalias(page, PAGE_SIZE-1); | ||
| page[r] = '\n'; | ||
| page[r+1] = 0; | ||
| return r+1; | ||
| } | ||
|
|
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| DEFINE_DMI_ATTR(modalias, 0444, sys_dmi_modalias_show); | ||
|
|
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| static struct attribute *sys_dmi_attributes[DMI_STRING_MAX+2]; | ||
|
|
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| static struct attribute_group sys_dmi_attribute_group = { | ||
| .attrs = sys_dmi_attributes, | ||
| }; | ||
|
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| static struct attribute_group* sys_dmi_attribute_groups[] = { | ||
| &sys_dmi_attribute_group, | ||
| NULL | ||
| }; | ||
|
|
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| static int dmi_dev_uevent(struct device *dev, char **envp, | ||
| int num_envp, char *buffer, int buffer_size) | ||
| { | ||
| strcpy(buffer, "MODALIAS="); | ||
| get_modalias(buffer+9, buffer_size-9); | ||
| envp[0] = buffer; | ||
| envp[1] = NULL; | ||
|
|
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| return 0; | ||
| } | ||
|
|
||
| static struct class dmi_class = { | ||
| .name = "dmi", | ||
| .dev_release = (void(*)(struct device *)) kfree, | ||
| .dev_uevent = dmi_dev_uevent, | ||
| }; | ||
|
|
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| static struct device *dmi_dev; | ||
|
|
||
| /* Initialization */ | ||
|
|
||
| #define ADD_DMI_ATTR(_name, _field) \ | ||
| if (dmi_get_system_info(_field)) \ | ||
| sys_dmi_attributes[i++] = & sys_dmi_##_name##_attr.attr; | ||
|
|
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| extern int dmi_available; | ||
|
|
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| static int __init dmi_id_init(void) | ||
| { | ||
| int ret, i; | ||
|
|
||
| if (!dmi_available) | ||
| return -ENODEV; | ||
|
|
||
| /* Not necessarily all DMI fields are available on all | ||
| * systems, hence let's built an attribute table of just | ||
| * what's available */ | ||
| i = 0; | ||
| ADD_DMI_ATTR(bios_vendor, DMI_BIOS_VENDOR); | ||
| ADD_DMI_ATTR(bios_version, DMI_BIOS_VERSION); | ||
| ADD_DMI_ATTR(bios_date, DMI_BIOS_DATE); | ||
| ADD_DMI_ATTR(sys_vendor, DMI_SYS_VENDOR); | ||
| ADD_DMI_ATTR(product_name, DMI_PRODUCT_NAME); | ||
| ADD_DMI_ATTR(product_version, DMI_PRODUCT_VERSION); | ||
| ADD_DMI_ATTR(product_serial, DMI_PRODUCT_SERIAL); | ||
| ADD_DMI_ATTR(product_uuid, DMI_PRODUCT_UUID); | ||
| ADD_DMI_ATTR(board_vendor, DMI_BOARD_VENDOR); | ||
| ADD_DMI_ATTR(board_name, DMI_BOARD_NAME); | ||
| ADD_DMI_ATTR(board_version, DMI_BOARD_VERSION); | ||
| ADD_DMI_ATTR(board_serial, DMI_BOARD_SERIAL); | ||
| ADD_DMI_ATTR(board_asset_tag, DMI_BOARD_ASSET_TAG); | ||
| ADD_DMI_ATTR(chassis_vendor, DMI_CHASSIS_VENDOR); | ||
| ADD_DMI_ATTR(chassis_type, DMI_CHASSIS_TYPE); | ||
| ADD_DMI_ATTR(chassis_version, DMI_CHASSIS_VERSION); | ||
| ADD_DMI_ATTR(chassis_serial, DMI_CHASSIS_SERIAL); | ||
| ADD_DMI_ATTR(chassis_asset_tag, DMI_CHASSIS_ASSET_TAG); | ||
| sys_dmi_attributes[i++] = &sys_dmi_modalias_attr.attr; | ||
|
|
||
| ret = class_register(&dmi_class); | ||
| if (ret) | ||
| return ret; | ||
|
|
||
| dmi_dev = kzalloc(sizeof(*dmi_dev), GFP_KERNEL); | ||
| if (!dmi_dev) { | ||
| ret = -ENOMEM; | ||
| goto fail_class_unregister; | ||
| } | ||
|
|
||
| dmi_dev->class = &dmi_class; | ||
| strcpy(dmi_dev->bus_id, "id"); | ||
| dmi_dev->groups = sys_dmi_attribute_groups; | ||
|
|
||
| ret = device_register(dmi_dev); | ||
| if (ret) | ||
| goto fail_class_unregister; | ||
|
|
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| return 0; | ||
|
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| fail_class_unregister: | ||
|
|
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| class_unregister(&dmi_class); | ||
|
|
||
| return ret; | ||
| } | ||
|
|
||
| arch_initcall(dmi_id_init); |
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