./tools/notsd-move

1 files changed, 345 insertions, 0 deletions

diff --git a/src/grp-boot/systemd-boot/util.c b/src/grp-boot/systemd-boot/util.c
new file mode 100644
index 0000000000..98c5be74ce
--- /dev/null
+++ b/src/grp-boot/systemd-boot/util.c
@@ -0,0 +1,345 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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
+ * Lesser General Public License for more details.
+ *
+ * Copyright (C) 2012-2013 Kay Sievers <kay@vrfy.org>
+ * Copyright (C) 2012 Harald Hoyer <harald@redhat.com>
+ */
+
+#include <efi.h>
+#include <efilib.h>
+
+#include "util.h"
+
+/*
+ * Allocated random UUID, intended to be shared across tools that implement
+ * the (ESP)\loader\entries\<vendor>-<revision>.conf convention and the
+ * associated EFI variables.
+ */
+static const EFI_GUID loader_guid = { 0x4a67b082, 0x0a4c, 0x41cf, {0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f} };
+
+#ifdef __x86_64__
+UINT64 ticks_read(VOID) {
+        UINT64 a, d;
+        __asm__ volatile ("rdtsc" : "=a" (a), "=d" (d));
+        return (d << 32) | a;
+}
+#elif defined(__i386__)
+UINT64 ticks_read(VOID) {
+        UINT64 val;
+        __asm__ volatile ("rdtsc" : "=A" (val));
+        return val;
+}
+#else
+UINT64 ticks_read(VOID) {
+        UINT64 val = 1;
+        return val;
+}
+#endif
+
+/* count TSC ticks during a millisecond delay */
+UINT64 ticks_freq(VOID) {
+        UINT64 ticks_start, ticks_end;
+
+        ticks_start = ticks_read();
+        uefi_call_wrapper(BS->Stall, 1, 1000);
+        ticks_end = ticks_read();
+
+        return (ticks_end - ticks_start) * 1000;
+}
+
+UINT64 time_usec(VOID) {
+        UINT64 ticks;
+        static UINT64 freq;
+
+        ticks = ticks_read();
+        if (ticks == 0)
+                return 0;
+
+        if (freq == 0) {
+                freq = ticks_freq();
+                if (freq == 0)
+                        return 0;
+        }
+
+        return 1000 * 1000 * ticks / freq;
+}
+
+EFI_STATUS parse_boolean(CHAR8 *v, BOOLEAN *b) {
+        if (strcmpa(v, (CHAR8 *)"1") == 0 ||
+            strcmpa(v, (CHAR8 *)"yes") == 0 ||
+            strcmpa(v, (CHAR8 *)"y") == 0 ||
+            strcmpa(v, (CHAR8 *)"true") == 0) {
+                *b = TRUE;
+                return EFI_SUCCESS;
+        }
+
+        if (strcmpa(v, (CHAR8 *)"0") == 0 ||
+            strcmpa(v, (CHAR8 *)"no") == 0 ||
+            strcmpa(v, (CHAR8 *)"n") == 0 ||
+            strcmpa(v, (CHAR8 *)"false") == 0) {
+                *b = FALSE;
+                return EFI_SUCCESS;
+        }
+
+        return EFI_INVALID_PARAMETER;
+}
+
+EFI_STATUS efivar_set_raw(const EFI_GUID *vendor, CHAR16 *name, CHAR8 *buf, UINTN size, BOOLEAN persistent) {
+        UINT32 flags;
+
+        flags = EFI_VARIABLE_BOOTSERVICE_ACCESS|EFI_VARIABLE_RUNTIME_ACCESS;
+        if (persistent)
+                flags |= EFI_VARIABLE_NON_VOLATILE;
+
+        return uefi_call_wrapper(RT->SetVariable, 5, name, (EFI_GUID *)vendor, flags, size, buf);
+}
+
+EFI_STATUS efivar_set(CHAR16 *name, CHAR16 *value, BOOLEAN persistent) {
+        return efivar_set_raw(&loader_guid, name, (CHAR8 *)value, value ? (StrLen(value)+1) * sizeof(CHAR16) : 0, persistent);
+}
+
+EFI_STATUS efivar_set_int(CHAR16 *name, UINTN i, BOOLEAN persistent) {
+        CHAR16 str[32];
+
+        SPrint(str, 32, L"%d", i);
+        return efivar_set(name, str, persistent);
+}
+
+EFI_STATUS efivar_get(CHAR16 *name, CHAR16 **value) {
+        CHAR8 *buf;
+        CHAR16 *val;
+        UINTN size;
+        EFI_STATUS err;
+
+        err = efivar_get_raw(&loader_guid, name, &buf, &size);
+        if (EFI_ERROR(err))
+                return err;
+
+        val = StrDuplicate((CHAR16 *)buf);
+        if (!val) {
+                FreePool(buf);
+                return EFI_OUT_OF_RESOURCES;
+        }
+
+        *value = val;
+        return EFI_SUCCESS;
+}
+
+EFI_STATUS efivar_get_int(CHAR16 *name, UINTN *i) {
+        CHAR16 *val;
+        EFI_STATUS err;
+
+        err = efivar_get(name, &val);
+        if (!EFI_ERROR(err)) {
+                *i = Atoi(val);
+                FreePool(val);
+        }
+        return err;
+}
+
+EFI_STATUS efivar_get_raw(const EFI_GUID *vendor, CHAR16 *name, CHAR8 **buffer, UINTN *size) {
+        CHAR8 *buf;
+        UINTN l;
+        EFI_STATUS err;
+
+        l = sizeof(CHAR16 *) * EFI_MAXIMUM_VARIABLE_SIZE;
+        buf = AllocatePool(l);
+        if (!buf)
+                return EFI_OUT_OF_RESOURCES;
+
+        err = uefi_call_wrapper(RT->GetVariable, 5, name, (EFI_GUID *)vendor, NULL, &l, buf);
+        if (!EFI_ERROR(err)) {
+                *buffer = buf;
+                if (size)
+                        *size = l;
+        } else
+                FreePool(buf);
+        return err;
+
+}
+
+VOID efivar_set_time_usec(CHAR16 *name, UINT64 usec) {
+        CHAR16 str[32];
+
+        if (usec == 0)
+                usec = time_usec();
+        if (usec == 0)
+                return;
+
+        SPrint(str, 32, L"%ld", usec);
+        efivar_set(name, str, FALSE);
+}
+
+static INTN utf8_to_16(CHAR8 *stra, CHAR16 *c) {
+        CHAR16 unichar;
+        UINTN len;
+        UINTN i;
+
+        if (stra[0] < 0x80)
+                len = 1;
+        else if ((stra[0] & 0xe0) == 0xc0)
+                len = 2;
+        else if ((stra[0] & 0xf0) == 0xe0)
+                len = 3;
+        else if ((stra[0] & 0xf8) == 0xf0)
+                len = 4;
+        else if ((stra[0] & 0xfc) == 0xf8)
+                len = 5;
+        else if ((stra[0] & 0xfe) == 0xfc)
+                len = 6;
+        else
+                return -1;
+
+        switch (len) {
+        case 1:
+                unichar = stra[0];
+                break;
+        case 2:
+                unichar = stra[0] & 0x1f;
+                break;
+        case 3:
+                unichar = stra[0] & 0x0f;
+                break;
+        case 4:
+                unichar = stra[0] & 0x07;
+                break;
+        case 5:
+                unichar = stra[0] & 0x03;
+                break;
+        case 6:
+                unichar = stra[0] & 0x01;
+                break;
+        }
+
+        for (i = 1; i < len; i++) {
+                if ((stra[i] & 0xc0) != 0x80)
+                        return -1;
+                unichar <<= 6;
+                unichar |= stra[i] & 0x3f;
+        }
+
+        *c = unichar;
+        return len;
+}
+
+CHAR16 *stra_to_str(CHAR8 *stra) {
+        UINTN strlen;
+        UINTN len;
+        UINTN i;
+        CHAR16 *str;
+
+        len = strlena(stra);
+        str = AllocatePool((len + 1) * sizeof(CHAR16));
+
+        strlen = 0;
+        i = 0;
+        while (i < len) {
+                INTN utf8len;
+
+                utf8len = utf8_to_16(stra + i, str + strlen);
+                if (utf8len <= 0) {
+                        /* invalid utf8 sequence, skip the garbage */
+                        i++;
+                        continue;
+                }
+
+                strlen++;
+                i += utf8len;
+        }
+        str[strlen] = '\0';
+        return str;
+}
+
+CHAR16 *stra_to_path(CHAR8 *stra) {
+        CHAR16 *str;
+        UINTN strlen;
+        UINTN len;
+        UINTN i;
+
+        len = strlena(stra);
+        str = AllocatePool((len + 2) * sizeof(CHAR16));
+
+        str[0] = '\\';
+        strlen = 1;
+        i = 0;
+        while (i < len) {
+                INTN utf8len;
+
+                utf8len = utf8_to_16(stra + i, str + strlen);
+                if (utf8len <= 0) {
+                        /* invalid utf8 sequence, skip the garbage */
+                        i++;
+                        continue;
+                }
+
+                if (str[strlen] == '/')
+                        str[strlen] = '\\';
+                if (str[strlen] == '\\' && str[strlen-1] == '\\') {
+                        /* skip double slashes */
+                        i += utf8len;
+                        continue;
+                }
+
+                strlen++;
+                i += utf8len;
+        }
+        str[strlen] = '\0';
+        return str;
+}
+
+CHAR8 *strchra(CHAR8 *s, CHAR8 c) {
+        do {
+                if (*s == c)
+                        return s;
+        } while (*s++);
+        return NULL;
+}
+
+INTN file_read(EFI_FILE_HANDLE dir, CHAR16 *name, UINTN off, UINTN size, CHAR8 **content) {
+        EFI_FILE_HANDLE handle;
+        CHAR8 *buf;
+        UINTN buflen;
+        EFI_STATUS err;
+        UINTN len;
+
+        err = uefi_call_wrapper(dir->Open, 5, dir, &handle, name, EFI_FILE_MODE_READ, 0ULL);
+        if (EFI_ERROR(err))
+                return err;
+
+        if (size == 0) {
+                EFI_FILE_INFO *info;
+
+                info = LibFileInfo(handle);
+                buflen = info->FileSize+1;
+                FreePool(info);
+        } else
+                buflen = size;
+
+        if (off > 0) {
+                err = uefi_call_wrapper(handle->SetPosition, 2, handle, off);
+                if (EFI_ERROR(err))
+                        return err;
+        }
+
+        buf = AllocatePool(buflen);
+        err = uefi_call_wrapper(handle->Read, 3, handle, &buflen, buf);
+        if (!EFI_ERROR(err)) {
+                buf[buflen] = '\0';
+                *content = buf;
+                len = buflen;
+        } else {
+                len = err;
+                FreePool(buf);
+        }
+
+        uefi_call_wrapper(handle->Close, 1, handle);
+        return len;
+}