X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fefivars.c;h=4fb77428f22a2b94d79f1ca349a225b40d898582;hb=bc6f2e7c62bcd08177f879423188c54289694619;hp=064746a9a89ca558e56f620664cac4bda808128e;hpb=61cc634bc208b264bd2fbe6af241b345a2002509;p=elogind.git

diff --git a/src/shared/efivars.c b/src/shared/efivars.c
index 064746a9a..4fb77428f 100644
--- a/src/shared/efivars.c
+++ b/src/shared/efivars.c
@@ -28,10 +28,42 @@
 #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,
@@ -303,11 +335,17 @@ static int boot_id_hex(const char s[4]) {
         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);
 
@@ -315,7 +353,7 @@ int efi_get_boot_options(uint16_t **options) {
         if (!dir)
                 return -errno;
 
-        while ((de = readdir(dir))) {
+        FOREACH_DIRENT(de, dir, r = -errno; goto fail) {
                 int id;
                 uint16_t *t;
 
@@ -334,17 +372,22 @@ int efi_get_boot_options(uint16_t **options) {
 
                 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) {
@@ -453,3 +496,5 @@ int efi_get_loader_device_part_uuid(sd_id128_t *u) {
 
         return 0;
 }
+
+#endif