* be run by root.
*/
#include <sys/types.h>
-#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#define ELILOALT_VERSION "0.02"
#define ELILO_ALT_NAME "EliloAlt"
-#define OLDEFIVAR_DIR "/proc/efi/vars"
-#define NEWEFIVAR_DIR "/sys/firmware/efi/vars"
-#define ELILO_ALTVAR ELILO_ALT_NAME"-00000000-0000-0000-0000-000000000000"
+#define EFIVAR_DIR "/proc/efi/vars"
+#define ELILO_ALTVAR EFIVAR_DIR"/"ELILO_ALT_NAME"-00000000-0000-0000-0000-000000000000"
#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
} __attribute__((packed)) efi_variable_t;
static char *elilo_alt_name = ELILO_ALT_NAME;
-static char *efi_vars_dir = NULL;
-static char *elilo_altvar = NULL;
-static char *elilo_newvar = NULL;
-static char *elilo_delvar = NULL;
-unsigned char efivars_version = -1;
static struct option cmd_options[]={
{ "version", 0, 0, 1},
if (getuid() != 0) {
fatal_error("This program must be run as root\n");
}
- efi_vars = opendir(efi_vars_dir);
+ efi_vars = opendir(EFIVAR_DIR);
if (efi_vars == NULL) {
- fatal_error("Cannot access %s\n", efi_vars_dir);
+ fatal_error("Cannot access %s\n", EFIVAR_DIR);
}
if (!find_entry) {
closedir(efi_vars);
break;
}
if (entry == NULL) {
- fatal_error("Cannot find entry in %s\n", efi_vars_dir);
+ fatal_error("Cannot find entry in %s\n", EFIVAR_DIR);
}
- sprintf(name, "%s/%s", efi_vars_dir, entry->d_name);
+ sprintf(name, "%s/%s", EFIVAR_DIR, entry->d_name);
closedir(efi_vars);
return name;
}
int fd, r, i;
check_proc_efi(0);
-
- if (efivars_version == 1) {
- fd = open(elilo_altvar, O_WRONLY);
- if (fd == -1) {
- fatal_error("variable not defined\n");
- }
- } else {
- fd = open(elilo_delvar, O_WRONLY);
- if (fd == -1) {
- fatal_error("can't open %s\n", elilo_delvar);
- }
+
+ fd = open(ELILO_ALTVAR, O_WRONLY);
+ if (fd == -1) {
+ fatal_error("variable not defined\n");
}
memset(&var, 0, sizeof(var));
r = write(fd, &var, sizeof(var));
if (r != sizeof(var)) {
- fatal_error("Variable %s defined but invalid content\n", elilo_altvar);
+ fatal_error("Variable %s defined but invalid content\n", ELILO_ALTVAR);
}
close(fd);
}
check_proc_efi(0);
- fd = open(elilo_altvar, O_RDONLY);
+ fd = open(ELILO_ALTVAR, O_RDONLY);
if (fd == -1) {
fatal_error("variable not defined\n");
}
r = read(fd, &var, sizeof(var));
if (r != sizeof(var)) {
- fatal_error("Variable %s defined but invalid content\n", elilo_altvar);
+ fatal_error("Variable %s defined but invalid content\n", ELILO_ALTVAR);
}
printf("EliloAlt=\"");
for(i=0; i < var.datasize; i+=1){
fatal_error("Variable content is too long, must be <= 512 characters\n");
}
- if (efivars_version == 1) {
- fd = open(name, O_WRONLY);
- if (fd == -1) {
- fatal_error("can't open %s: %s\n", name,
- strerror(errno));
- }
- } else {
- fd = open(elilo_newvar, O_WRONLY);
- if (fd == -1) {
- fatal_error("can't open %s: %s\n", elilo_newvar,
- strerror(errno));
- }
+ fd = open(name, O_WRONLY);
+ if (fd == -1) {
+ fatal_error("can't open %s: %s\n", ELILO_ALTVAR, strerror(errno));
}
+
memset(&var, 0, sizeof(var));
for (i=0; i < sizeof(elilo_alt_name); i++) {
r = write(fd, &var, sizeof(var));
if (r != sizeof(var)) {
- fatal_error("Variable %s defined but invalid content %d\n", elilo_altvar, r);
+ fatal_error("Variable %s defined but invalid content %d\n", ELILO_ALTVAR, r);
}
close(fd);
main(int argc, char **argv)
{
int c;
- struct stat statbuf;
-
- if (stat(OLDEFIVAR_DIR, &statbuf) == 0) {
- efi_vars_dir = strdup(OLDEFIVAR_DIR);
- efivars_version = 1;
- } else if (stat(NEWEFIVAR_DIR, &statbuf) == 0) {
- efi_vars_dir = strdup(NEWEFIVAR_DIR);
- elilo_newvar = malloc(strlen(efi_vars_dir) +
- strlen("new_var") + 2);
- sprintf(elilo_newvar, "%s/%s", efi_vars_dir, "new_var");
- elilo_delvar = malloc(strlen(efi_vars_dir) +
- strlen("del_var") + 2);
- sprintf(elilo_delvar, "%s/%s", efi_vars_dir, "del_var");
- efivars_version = 2;
- } else {
- fatal_error("No EFI vars dir found\n\ttried:\n\t%s\n\t%s",
- OLDEFIVAR_DIR, NEWEFIVAR_DIR);
- }
- elilo_altvar = malloc(strlen(efi_vars_dir)+strlen(ELILO_ALTVAR)+2);
- sprintf(elilo_altvar, "%s/%s", efi_vars_dir, ELILO_ALTVAR);
while ((c=getopt_long(argc, argv,"hdps:", cmd_options, 0)) != -1) {
switch(c) {