diff options
Diffstat (limited to 'src')
| l--------- | src/efi-boot-generator/Makefile | 1 | ||||
| -rw-r--r-- | src/efi-boot-generator/efi-boot-generator.c | 117 | ||||
| -rw-r--r-- | src/shared/efivars.c | 30 | ||||
| -rw-r--r-- | src/shared/efivars.h | 4 |
4 files changed, 152 insertions, 0 deletions
diff --git a/src/efi-boot-generator/Makefile b/src/efi-boot-generator/Makefile new file mode 120000 index 0000000000..d0b0e8e008 --- /dev/null +++ b/src/efi-boot-generator/Makefile @@ -0,0 +1 @@ +../Makefile
\ No newline at end of file diff --git a/src/efi-boot-generator/efi-boot-generator.c b/src/efi-boot-generator/efi-boot-generator.c new file mode 100644 index 0000000000..ee6ec31c0e --- /dev/null +++ b/src/efi-boot-generator/efi-boot-generator.c @@ -0,0 +1,117 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of systemd. + + Copyright 2013 Lennart Poettering + + systemd 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. + + systemd 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. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <unistd.h> +#include <stdlib.h> + +#include "efivars.h" +#include "path-util.h" +#include "util.h" + +static const char *arg_dest = NULL; + +int main(int argc, char *argv[]) { + int r = EXIT_SUCCESS; + sd_id128_t id; + _cleanup_free_ char *name = NULL; + _cleanup_fclose_ FILE *f = NULL; + + if (argc > 1 && argc != 4) { + log_error("This program takes three or no arguments."); + return EXIT_FAILURE; + } + + if (argc > 1) + arg_dest = argv[3]; + + log_set_target(LOG_TARGET_SAFE); + log_parse_environment(); + log_open(); + + umask(0022); + + if (!is_efiboot()) + return EXIT_SUCCESS; + + if (dir_is_empty("/boot") <= 0) + return EXIT_SUCCESS; + + r = efi_get_loader_device_part_uuid(&id); + if (r == -ENOENT) + return EXIT_SUCCESS; + if (r < 0) { + log_error("Failed to read ESP partition UUID: %s", strerror(-r)); + return EXIT_FAILURE; + } + + name = strjoin(arg_dest, "/boot.mount", NULL); + if (!name) { + log_oom(); + return EXIT_FAILURE; + } + + f = fopen(name, "wxe"); + if (!f) { + log_error("Failed to create mount unit file %s: %m", name); + return EXIT_FAILURE; + } + + fprintf(f, + "# Automatially generated by systemd-efi-boot-generator\n\n" + "[Mount]\n" + "Where=/boot\n" + "What=/dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n" + "Options=umask=0077\n", + SD_ID128_FORMAT_VAL(id)); + + free(name); + name = strjoin(arg_dest, "/boot.automount", NULL); + if (!name) { + log_oom(); + return EXIT_FAILURE; + } + + fclose(f); + f = fopen(name, "wxe"); + if (!f) { + log_error("Failed to create automount unit file %s: %m", name); + return EXIT_FAILURE; + } + + fprintf(f, + "# Automatially generated by systemd-efi-boot-generator\n\n" + "[Automount]\n" + "Where=/boot\n"); + + free(name); + name = strjoin(arg_dest, "/local-fs.target.wants/boot.automount", NULL); + if (!name) { + log_oom(); + return EXIT_FAILURE; + } + + if (symlink("../boot.automount", name) < 0) { + log_error("Failed to create symlink: %m"); + return EXIT_FAILURE; + } + + return 0; +} diff --git a/src/shared/efivars.c b/src/shared/efivars.c index 784ff364d9..183d33c772 100644 --- a/src/shared/efivars.c +++ b/src/shared/efivars.c @@ -235,3 +235,33 @@ int efi_get_boot_timestamps(const dual_timestamp *n, dual_timestamp *firmware, d return 0; } + +int efi_get_loader_device_part_uuid(sd_id128_t *u) { + _cleanup_free_ void *s = NULL; + _cleanup_free_ char *p = NULL; + size_t ss; + int r, parsed[16]; + unsigned i; + + assert(u); + + r = efi_get_variable(EFI_VENDOR_LOADER, "LoaderDevicePartUUID", NULL, &s, &ss); + if (r < 0) + return r; + + p = utf16_to_utf8(s, ss); + if (!p) + return -ENOMEM; + + if (sscanf(p, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", + &parsed[0], &parsed[1], &parsed[2], &parsed[3], + &parsed[4], &parsed[5], &parsed[6], &parsed[7], + &parsed[8], &parsed[9], &parsed[10], &parsed[11], + &parsed[12], &parsed[13], &parsed[14], &parsed[15]) != 16) + return -EIO; + + for (i = 0; i < ELEMENTSOF(parsed); i++) + u->bytes[i] = parsed[i]; + + return 0; +} diff --git a/src/shared/efivars.h b/src/shared/efivars.h index 120f3c7a6a..d5cfb4fa0d 100644 --- a/src/shared/efivars.h +++ b/src/shared/efivars.h @@ -23,11 +23,15 @@ #include <sys/types.h> #include <inttypes.h> +#include <stdbool.h> #include "sd-id128.h" +#include "time-util.h" bool is_efiboot(void); int efi_get_variable(sd_id128_t vendor, const char *name, uint32_t *attribute, void **value, size_t *size); int efi_get_boot_timestamps(const dual_timestamp *n, dual_timestamp *firmware, dual_timestamp *loader); + +int efi_get_loader_device_part_uuid(sd_id128_t *u); |