#include "utf8.h"
#include "efivars.h"
+#ifdef ENABLE_EFI
+
bool is_efi_boot(void) {
return access("/sys/firmware/efi", F_OK) >= 0;
}
+static int read_flag(const char *varname) {
+ int r;
+ void *v;
+ size_t s;
+ uint8_t b;
+
+ r = efi_get_variable(EFI_VENDOR_GLOBAL, varname, NULL, &v, &s);
+ if (r < 0)
+ return r;
+
+ if (s != 1) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ b = *(uint8_t *)v;
+ r = b > 0;
+finish:
+ free(v);
+ return r;
+}
+
+int is_efi_secure_boot(void) {
+ return read_flag("SecureBoot");
+}
+
+int is_efi_secure_boot_setup_mode(void) {
+ return read_flag("SetupMode");
+}
+
int efi_get_variable(
sd_id128_t vendor,
const char *name,
n = read(fd, r, (size_t) st.st_size - 4);
if (n < 0) {
free(r);
- return (int) -n;
+ return -errno;
}
if (n != (ssize_t) st.st_size - 4) {
free(r);
if (title_size > l - offsetof(struct boot_option, title))
return -EINVAL;
- s = utf16_to_utf8(header->title, title_size);
- if (!s) {
- err = -ENOMEM;
- goto err;
+ if (title) {
+ s = utf16_to_utf8(header->title, title_size);
+ if (!s) {
+ err = -ENOMEM;
+ goto err;
+ }
}
if (header->path_len > 0) {
if (dpath->drive.signature_type != 0x02)
continue;
- efi_guid_to_id128(dpath->drive.signature, &p_uuid);
+ if (part_uuid)
+ efi_guid_to_id128(dpath->drive.signature, &p_uuid);
continue;
}
/* Sub-Type 4 – File Path */
- if (dpath->sub_type == 0x04) {
+ if (dpath->sub_type == 0x04 && !p && path) {
p = utf16_to_utf8(dpath->path, dpath->length-4);
continue;
}
return id;
}
+static int cmp_uint16(const void *_a, const void *_b) {
+ const uint16_t *a = _a, *b = _b;
+
+ return (int)*a - (int)*b;
+}
+
int efi_get_boot_options(uint16_t **options) {
_cleanup_closedir_ DIR *dir = NULL;
struct dirent *de;
uint16_t *list = NULL;
- int count = 0;
+ int count = 0, r;
assert(options);
if (!dir)
return -errno;
- while ((de = readdir(dir))) {
+ FOREACH_DIRENT(de, dir, r = -errno; goto fail) {
int id;
uint16_t *t;
t = realloc(list, (count + 1) * sizeof(uint16_t));
if (!t) {
- free(list);
- return -ENOMEM;
+ r = -ENOMEM;
+ goto fail;
}
list = t;
list[count ++] = id;
-
}
+ qsort(list, count, sizeof(uint16_t), cmp_uint16);
+
*options = list;
return count;
+
+fail:
+ free(list);
+ return r;
}
static int read_usec(sd_id128_t vendor, const char *name, usec_t *u) {
return 0;
}
+
+#endif