X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Flib%2Fefi.c.orig;fp=src%2Flib%2Fefi.c.orig;h=2257e9f960c01d2db51ba774b5a1e33f707e8c3f;hb=08b92cb68b9f2371c663367e9d529391960e6106;hp=0000000000000000000000000000000000000000;hpb=d96a8f66c5fe2fac79073cc40e6f57f04c5bb4f1;p=debian%2Fefibootmgr

diff --git a/src/lib/efi.c.orig b/src/lib/efi.c.orig
new file mode 100644
index 0000000..2257e9f
--- /dev/null
+++ b/src/lib/efi.c.orig
@@ -0,0 +1,765 @@
+/*
+  efivars_proc.[ch] - Manipulates EFI variables as exported in /proc/efi/vars
+
+  Copyright (C) 2001,2003 Dell Computer Corporation <Matt_Domsch@dell.com>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <linux/sockios.h>
+#include <net/if.h>
+#include <pci/pci.h>
+#include <linux/ethtool.h>
+#include "efi.h"
+#include "efichar.h"
+#include "scsi_ioctls.h"
+#include "disk.h"
+#include "efibootmgr.h"
+#include "efivars_procfs.h"
+#include "efivars_sysfs.h"
+#include "list.h"
+
+static struct efivar_kernel_calls *fs_kernel_calls;
+
+EFI_DEVICE_PATH *
+load_option_path(EFI_LOAD_OPTION *option)
+{
+	char *p = (char *) option;
+	return (EFI_DEVICE_PATH *)
+		(p + sizeof(uint32_t) /* Attributes */
+		 + sizeof(uint16_t)   /* FilePathListLength*/
+		 + efichar_strsize(option->description)); /* Description */
+}
+
+char *
+efi_guid_unparse(efi_guid_t *guid, char *out)
+{
+	sprintf(out, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+		guid->b[3], guid->b[2], guid->b[1], guid->b[0],
+		guid->b[5], guid->b[4], guid->b[7], guid->b[6],
+		guid->b[8], guid->b[9], guid->b[10], guid->b[11],
+		guid->b[12], guid->b[13], guid->b[14], guid->b[15]);
+        return out;
+}
+
+void
+set_fs_kernel_calls()
+{
+	char name[PATH_MAX];
+	DIR *dir;
+	snprintf(name, PATH_MAX, "%s", SYSFS_DIR_EFI_VARS);
+	dir = opendir(name);
+	if (dir) {
+		closedir(dir);
+		fs_kernel_calls = &sysfs_kernel_calls;
+		return;
+	}
+
+	snprintf(name, PATH_MAX, "%s", PROCFS_DIR_EFI_VARS);
+	dir = opendir(name);
+	if (dir) {
+		closedir(dir);
+		fs_kernel_calls = &procfs_kernel_calls;
+		return;
+	}
+	fprintf(stderr, "Fatal: Couldn't open either sysfs or procfs directories for accessing EFI variables.\n");
+	fprintf(stderr, "Try 'modprobe efivars' as root.\n");
+	exit(1);
+}
+
+
+
+static efi_status_t
+write_variable_to_file(efi_variable_t *var)
+{
+	int fd, byteswritten;
+	if (!var || !opts.testfile) return EFI_INVALID_PARAMETER;
+
+	printf("Test mode: Writing to %s\n", opts.testfile);
+	fd = creat(opts.testfile, S_IRWXU);
+	if (fd == -1) {
+		perror("Couldn't write to testfile");
+		return EFI_INVALID_PARAMETER;
+	}
+
+	byteswritten = write(fd, var, sizeof(*var));
+	if (byteswritten == -1) {
+		perror("Writing to testfile");
+
+	}
+	close(fd);
+	return EFI_SUCCESS;
+}
+
+efi_status_t
+read_variable(const char *name, efi_variable_t *var)
+{
+	if (!name || !var) return EFI_INVALID_PARAMETER;
+	return fs_kernel_calls->read(name, var);
+}
+
+efi_status_t
+create_variable(efi_variable_t *var)
+{
+	if (!var) return EFI_INVALID_PARAMETER;
+	if (opts.testfile) return write_variable_to_file(var);
+	return fs_kernel_calls->create(var);
+}
+
+efi_status_t
+delete_variable(efi_variable_t *var)
+{
+	if (!var) return EFI_INVALID_PARAMETER;
+	if (opts.testfile) return write_variable_to_file(var);
+	return fs_kernel_calls->delete(var);
+}
+
+
+efi_status_t
+edit_variable(efi_variable_t *var)
+{
+	char name[PATH_MAX];
+	if (!var) return EFI_INVALID_PARAMETER;
+	if (opts.testfile) return write_variable_to_file(var);
+
+	variable_to_name(var, name);
+	return fs_kernel_calls->edit(name, var);
+}
+
+efi_status_t
+create_or_edit_variable(efi_variable_t *var)
+{
+	efi_variable_t testvar;
+	char name[PATH_MAX];
+
+	memcpy(&testvar, var, sizeof(*var));
+	variable_to_name(var, name);
+
+	if (read_variable(name, &testvar) == EFI_SUCCESS)
+		return edit_variable(var);
+	else
+		return create_variable(var);
+}
+
+static int
+select_boot_var_names(const struct dirent *d)
+{
+	if (!strncmp(d->d_name, "Boot", 4) &&
+	    isxdigit(d->d_name[4]) && isxdigit(d->d_name[5]) &&
+	    isxdigit(d->d_name[6]) && isxdigit(d->d_name[7]) &&
+	    d->d_name[8] == '-')
+		return 1;
+	return 0;
+}
+
+int
+read_boot_var_names(struct dirent ***namelist)
+{
+	if (!fs_kernel_calls || !namelist) return -1;
+	return scandir(fs_kernel_calls->path,
+		       namelist, select_boot_var_names,
+		       alphasort);
+}
+
+
+static int
+get_edd_version()
+{
+	efi_status_t status;
+	efi_variable_t var;
+	efi_guid_t guid = BLKX_UNKNOWN_GUID;
+	char name[80], text_guid[40];
+	ACPI_DEVICE_PATH *path = (ACPI_DEVICE_PATH *)&(var.Data);
+	int rc = 0;
+
+	/* Allow global user option override */
+
+	switch (opts.edd_version)
+	{
+	case 0: /* No EDD information */
+		return 0;
+		break;
+	case 1: /* EDD 1.0 */
+		return 1;
+		break;
+	case 3: /* EDD 3.0 */
+		return 3;
+		break;
+	default:
+		break;
+	}
+
+
+	memset(&var, 0, sizeof(efi_variable_t));
+	efi_guid_unparse(&guid, text_guid);
+	sprintf(name, "blk0-%s", text_guid);
+
+	status = read_variable(name, &var);
+	if (status != EFI_SUCCESS) {
+		return 0;
+	}
+	if (path->type == 2 && path->subtype == 1) rc = 3;
+	else rc = 1;
+	return rc;
+}
+
+/*
+  EFI_DEVICE_PATH, 0x01 (Hardware), 0x04 (Vendor), length 0x0018
+  This needs to know what EFI device has the boot device.
+*/
+static uint16_t
+make_edd10_device_path(void *dest, uint32_t hardware_device)
+{
+	VENDOR_DEVICE_PATH *hw;
+	char buffer[EDD10_HARDWARE_VENDOR_PATH_LENGTH];
+	efi_guid_t guid = EDD10_HARDWARE_VENDOR_PATH_GUID;
+	uint32_t *data;
+	memset(buffer, 0, sizeof(buffer));
+	hw = (VENDOR_DEVICE_PATH *)buffer;
+	data = (uint32_t *)hw->data;
+	hw->type = 0x01; /* Hardware Device Path */
+	hw->subtype = 0x04; /* Vendor */
+	hw->length = EDD10_HARDWARE_VENDOR_PATH_LENGTH;
+	memcpy(&(hw->vendor_guid), &guid, sizeof(guid));
+	*data = hardware_device;
+	memcpy(dest, buffer, hw->length);
+	return hw->length;
+}
+
+static uint16_t
+make_end_device_path(void *dest)
+{
+	END_DEVICE_PATH p;
+	memset(&p, 0, sizeof(p));
+	p.type = 0x7F; /* End of Hardware Device Path */
+	p.subtype = 0xFF; /* End Entire Device Path */
+	p.length = sizeof(p);
+	memcpy(dest, &p, p.length);
+	return p.length;
+}
+
+static uint16_t
+make_acpi_device_path(void *dest, uint32_t _HID, uint32_t _UID)
+{
+	ACPI_DEVICE_PATH p;
+	memset(&p, 0, sizeof(p));
+	p.type = 2;
+	p.subtype = 1;
+	p.length = sizeof(p);
+	p._HID = _HID;
+	p._UID = _UID;
+	memcpy(dest, &p, p.length);
+	return p.length;
+}
+
+static uint16_t
+make_mac_addr_device_path(void *dest, char *mac, uint8_t iftype)
+{
+
+        int i;
+	MAC_ADDR_DEVICE_PATH p;
+	memset(&p, 0, sizeof(p));
+	p.type = 3;
+	p.subtype = 11;
+	p.length = sizeof(p);
+	for (i=0; i < 14; i++) {
+		p.macaddr[i] = mac[i];
+	}
+	p.iftype = iftype;
+	memcpy(dest, &p, p.length);
+	return p.length;
+}
+
+struct device
+{
+	struct pci_dev *pci_dev;
+	struct list_head node;
+};
+
+static struct device *
+is_parent_bridge(struct pci_dev *p, unsigned int target_bus)
+{
+	struct device *d;
+ 	unsigned int primary, secondary;
+
+	if ( (pci_read_word(p, PCI_HEADER_TYPE) & 0x7f) != PCI_HEADER_TYPE_BRIDGE)
+		return NULL;
+
+	primary=pci_read_byte(p, PCI_PRIMARY_BUS);
+	secondary=pci_read_byte(p, PCI_SECONDARY_BUS);
+
+
+	if (secondary != target_bus)
+		return NULL;
+
+	d = malloc(sizeof(struct device));
+	if (!d)
+		return NULL;
+	memset(d, 0, sizeof(*d));
+	INIT_LIST_HEAD(&d->node);
+
+	d->pci_dev = p;
+
+	return d;
+}
+
+static struct device *
+find_parent(struct pci_access *pacc, unsigned int target_bus)
+{
+	struct device *dev;
+	struct pci_dev *p;
+
+	for (p=pacc->devices; p; p=p->next) {
+		dev = is_parent_bridge(p, target_bus);
+		if (dev)
+			return dev;
+	}
+	return NULL;
+}
+
+static uint16_t
+make_one_pci_device_path(void *dest, uint8_t device, uint8_t function)
+{
+	PCI_DEVICE_PATH p;
+	memset(&p, 0, sizeof(p));
+	p.type = 1;
+	p.subtype = 1;
+	p.length   = sizeof(p);
+	p.device   = device;
+	p.function = function;
+	memcpy(dest, &p, p.length);
+	return p.length;
+}
+
+static uint16_t
+make_pci_device_path(void *dest, uint8_t bus, uint8_t device, uint8_t function)
+{
+	struct device *dev;
+	struct pci_access *pacc;
+	struct list_head *pos, *n;
+	LIST_HEAD(pci_parent_list);
+	char *p = dest;
+
+	pacc = pci_alloc();
+	if (!pacc)
+		return 0;
+
+	pci_init(pacc);
+	pci_scan_bus(pacc);
+
+	do {
+		dev = find_parent(pacc, bus);
+		if (dev) {
+			list_add(&pci_parent_list, &dev->node);
+			bus = dev->pci_dev->bus;
+		}
+	} while (dev && bus);
+
+
+	list_for_each_safe(pos, n, &pci_parent_list) {
+		dev = list_entry(pos, struct device, node);
+		p += make_one_pci_device_path(p,
+					      dev->pci_dev->dev,
+					      dev->pci_dev->func);
+		list_del(&dev->node);
+		free(dev);
+	}
+
+	p += make_one_pci_device_path(p, device, function);
+
+	pci_cleanup(pacc);
+
+	return ((void *)p - dest);
+}
+
+static uint16_t
+make_scsi_device_path(void *dest, uint16_t id, uint16_t lun)
+{
+	SCSI_DEVICE_PATH p;
+	memset(&p, 0, sizeof(p));
+	p.type = 3;
+	p.subtype = 2;
+	p.length   = sizeof(p);
+	p.id       = id;
+	p.lun      = lun;
+	memcpy(dest, &p, p.length);
+	return p.length;
+}
+
+static uint16_t
+make_harddrive_device_path(void *dest, uint32_t num, uint64_t start, uint64_t size,
+			   uint8_t *signature,
+			   uint8_t mbr_type, uint8_t signature_type)
+{
+	HARDDRIVE_DEVICE_PATH p;
+	memset(&p, 0, sizeof(p));
+	p.type = 4;
+	p.subtype = 1;
+	p.length   = sizeof(p);
+	p.part_num = num;
+	p.start = start;
+	p.size = size;
+	if (signature) memcpy(p.signature, signature, 16);
+	p.mbr_type = mbr_type;
+	p.signature_type = signature_type;
+	memcpy(dest, &p, p.length);
+	return p.length;
+}
+
+static uint16_t
+make_file_path_device_path(void *dest, efi_char16_t *name)
+{
+	FILE_PATH_DEVICE_PATH *p;
+	char buffer[1024];
+	int namelen  = efichar_strlen(name, -1);
+	int namesize = efichar_strsize(name);
+
+	memset(buffer, 0, sizeof(buffer));
+	p = (FILE_PATH_DEVICE_PATH *)buffer;
+	p->type      = 4;
+	p->subtype   = 4;
+	p->length    = 4 + namesize;
+	efichar_strncpy(p->path_name,
+			name, namelen);
+
+	memcpy(dest, buffer, p->length);
+	return p->length;
+
+}
+
+
+
+static long
+make_edd30_device_path(int fd, void *buffer)
+{
+	int rc=0;
+	unsigned char bus=0, device=0, function=0;
+	Scsi_Idlun idlun;
+	unsigned char host=0, channel=0, id=0, lun=0;
+	char *p = buffer;
+
+
+	rc = disk_get_pci(fd, &bus, &device, &function);
+	if (rc) return 0;
+
+	memset(&idlun, 0, sizeof(idlun));
+	rc = get_scsi_idlun(fd, &idlun);
+	if (rc) return 0;
+	idlun_to_components(&idlun, &host, &channel, &id, &lun);
+
+	p += make_acpi_device_path      (p, EISAID_PNP0A03, bus);
+	p += make_pci_device_path       (p, bus, device, function);
+	p += make_scsi_device_path      (p, id, lun);
+	return ((void *)p - buffer);
+}
+
+/**
+ * make_disk_load_option()
+ * @disk disk
+ *
+ * Returns 0 on error, length of load option created on success.
+ */
+char *make_disk_load_option(char *p, char *disk)
+{
+    int disk_fd=0;
+    char buffer[80];
+    char signature[16];
+    int rc, edd_version=0;
+    uint8_t mbr_type=0, signature_type=0;
+    uint64_t start=0, size=0;
+    efi_char16_t os_loader_path[40];
+
+    memset(signature, 0, sizeof(signature));
+
+    disk_fd = open(opts.disk, O_RDWR);
+    if (disk_fd == -1) {
+        sprintf(buffer, "Could not open disk %s", opts.disk);
+	perror(buffer);
+	return 0;
+    }
+
+    if (opts.edd_version) {
+        edd_version = get_edd_version();
+
+	if (edd_version == 3) {
+	    p += make_edd30_device_path(disk_fd, p);
+	}
+	else if (edd_version == 1) {
+	    p += make_edd10_device_path(p, opts.edd10_devicenum);
+	}
+    }
+
+    rc = disk_get_partition_info (disk_fd, opts.part,
+				  &start, &size, signature,
+				  &mbr_type, &signature_type);
+
+    close(disk_fd);
+
+    if (rc) {
+        fprintf(stderr, "Error: no partition information on disk %s.\n"
+		"       Cowardly refusing to create a boot option.\n",
+		opts.disk);
+	return 0;
+    }
+
+    p += make_harddrive_device_path (p, opts.part,
+				     start, size,
+				     signature,
+				     mbr_type, signature_type);
+
+    efichar_from_char(os_loader_path, opts.loader, sizeof(os_loader_path));
+    p += make_file_path_device_path (p, os_loader_path);
+    p += make_end_device_path       (p);
+
+    return(p);
+}
+
+/**
+ * make_net_load_option()
+ * @data - load option returned
+ *
+ * Returns NULL on error, or p advanced by length of load option
+ * created on success.
+ */
+char *make_net_load_option(char *p, char *iface)
+{
+    /* copied pretty much verbatim from the ethtool source */
+    int fd = 0, err; 
+    int bus, slot, func;
+    struct ifreq ifr;
+    struct ethtool_drvinfo drvinfo;
+
+    memset(&ifr, 0, sizeof(ifr));
+    strcpy(ifr.ifr_name, iface);
+    drvinfo.cmd = ETHTOOL_GDRVINFO;
+    ifr.ifr_data = (caddr_t)&drvinfo;
+    /* Open control socket */
+    fd = socket(AF_INET, SOCK_DGRAM, 0);
+    if (fd < 0) {
+        perror("Cannot get control socket");
+	goto out;
+    }
+    err = ioctl(fd, SIOCETHTOOL, &ifr);
+    if (err < 0) {
+        perror("Cannot get driver information");
+	goto out;
+    }
+
+    /* The domain part was added in 2.6 kernels.  Test for that first. */
+    err = sscanf(drvinfo.bus_info, "%*x:%2x:%2x.%x", &bus, &slot, &func);
+    if (err != 3) {
+	    err = sscanf(drvinfo.bus_info, "%2x:%2x.%x", &bus, &slot, &func);
+	    if (err != 3) {
+		    perror("Couldn't parse device location string.");
+		    goto out;
+	    }
+    }
+
+    err = ioctl(fd, SIOCGIFHWADDR, &ifr);
+    if (err < 0) {
+        perror("Cannot get hardware address.");
+	goto out;
+    }
+
+    p += make_acpi_device_path(p, opts.acpi_hid, opts.acpi_uid);
+    p += make_pci_device_path(p, bus, (uint8_t)slot, (uint8_t)func);
+    p += make_mac_addr_device_path(p, ifr.ifr_ifru.ifru_hwaddr.sa_data, 0);
+    p += make_end_device_path       (p);
+    return(p);
+ out:
+    return NULL;
+}
+
+/**
+ * make_linux_load_option()
+ * @data - load option returned
+ *
+ * Returns 0 on error, length of load option created on success.
+ */
+static unsigned long
+make_linux_load_option(void *data)
+{
+	EFI_LOAD_OPTION *load_option = data;
+	char *p = data, *q;
+	efi_char16_t description[64];
+	unsigned long datasize=0;
+
+	/* Write Attributes */
+	if (opts.active) load_option->attributes = LOAD_OPTION_ACTIVE;
+	else             load_option->attributes = 0;
+
+	p += sizeof(uint32_t);
+	/* skip writing file_path_list_length */
+	p += sizeof(uint16_t);
+	/* Write description.  This is the text that appears on the screen for the load option. */
+	memset(description, 0, sizeof(description));
+	efichar_from_char(description, opts.label, sizeof(description));
+	efichar_strncpy(load_option->description, description, sizeof(description));
+	p += efichar_strsize(load_option->description);
+
+	q = p;
+
+	if (opts.iface) {
+	      p = (char *)make_net_load_option(p, opts.iface);
+	}
+	else {
+	      p = (char *)make_disk_load_option(p, opts.iface);
+	}
+	if (p == NULL)
+		return 0;
+
+	load_option->file_path_list_length = p - q;
+
+	datasize = (uint8_t *)p - (uint8_t *)data;
+	return datasize;
+}
+
+/*
+ * append_extra_args()
+ * appends all arguments from argv[] not snarfed by getopt
+ * as one long string onto data, up to maxchars.  allow for nulls
+ */
+
+static unsigned long
+append_extra_args_ascii(void *data, unsigned long maxchars)
+{
+	char *p = data;
+	int i, appended=0;
+	unsigned long usedchars=0;
+	if (!data) return 0;
+
+
+	for (i=opts.optind; i < opts.argc && usedchars < maxchars; i++)	{
+		p = strncpy(p, opts.argv[i], maxchars-usedchars-1);
+		p += strlen(p);
+		appended=1;
+
+		usedchars = p - (char *)data;
+
+		/* Put a space between args */
+		if (i < (opts.argc-1)) {
+
+			p = strncpy(p, " ", maxchars-usedchars-1);
+			p += strlen(p);
+			usedchars = p - (char *)data;
+		}
+
+	}
+	/* Remember the NULL */
+	if (appended) return strlen(data) + 1;
+	return 0;
+}
+
+static unsigned long
+append_extra_args_unicode(void *data, unsigned long maxchars)
+{
+	char *p = data;
+	int i, appended=0;
+	unsigned long usedchars=0;
+	if (!data) return 0;
+
+
+	for (i=opts.optind; i < opts.argc && usedchars < maxchars; i++)	{
+		p += efichar_from_char((efi_char16_t *)p, opts.argv[i],
+				       maxchars-usedchars);
+		usedchars = efichar_strsize(data) - sizeof(efi_char16_t);
+		appended=1;
+
+		/* Put a space between args */
+		if (i < (opts.argc-1)) {
+			p += efichar_from_char((efi_char16_t *)p, " ",
+					       maxchars-usedchars);
+			usedchars = efichar_strsize(data) -
+				sizeof(efi_char16_t);
+		}
+	}
+
+	if (appended) return efichar_strsize( (efi_char16_t *)data );
+	return 0;
+}
+
+
+static unsigned long
+append_extra_args(void *data, unsigned long maxchars)
+{
+	if (opts.unicode)
+	  return append_extra_args_unicode(data, maxchars);
+	else
+	  return append_extra_args_ascii(data, maxchars);
+}
+
+
+
+int
+make_linux_efi_variable(efi_variable_t *var,
+			unsigned int free_number)
+{
+	efi_guid_t guid = EFI_GLOBAL_VARIABLE;
+	char buffer[16];
+	unsigned char *optional_data=NULL;
+	unsigned long load_option_size = 0, opt_data_size=0;
+
+	memset(buffer,    0, sizeof(buffer));
+
+	/* VariableName needs to be BootXXXX */
+	sprintf(buffer, "Boot%04X", free_number);
+
+	efichar_from_char(var->VariableName, buffer, 1024);
+
+	memcpy(&(var->VendorGuid), &guid, sizeof(guid));
+	var->Attributes =
+		EFI_VARIABLE_NON_VOLATILE |
+		EFI_VARIABLE_BOOTSERVICE_ACCESS |
+		EFI_VARIABLE_RUNTIME_ACCESS;
+
+	/* Set Data[] and DataSize */
+
+	load_option_size =  make_linux_load_option(var->Data);
+
+	if (!load_option_size) return 0;
+
+	/* Set OptionalData (passed as binary to the called app) */
+	optional_data = var->Data + load_option_size;
+	opt_data_size = append_extra_args(optional_data,
+				  sizeof(var->Data) - load_option_size);
+	var->DataSize = load_option_size + opt_data_size;
+	return var->DataSize;
+}
+
+
+int
+variable_to_name(efi_variable_t *var, char *name)
+{
+	char *p = name;
+	efichar_to_char(p, var->VariableName, PATH_MAX);
+	p += strlen(p);
+	p += sprintf(p, "-");
+	efi_guid_unparse(&var->VendorGuid, p);
+	return strlen(name);
+}