[opensuse-kernel] [PATCH 0/19] Backported patches for support UEFI variable filesystem

Patch-mainline: v3.8-rc1..v3.8-rc3 Target: openSUSE 12.3 Test steps: + build; make modules_install; make install + mount -t efivarfs none /sys/firmware/efi/efivars/ or create file /lib/systemd/system/sys-firmware-efi-efivars.mount [1] + ls /sys/firmware/efi/efivars will show up all EFI variables + Try the small create[2]/delete[3] programs from Gary Lin The create program will create a EFI variable is TestVar, then we can see it show up in /sys/firmware/efi/efivars. And, delete program can remove it. Backported 19 patches: 0001-efi-Add-support-for-a-UEFI-variable-filesystem.patch 0002-efi-Handle-deletions-and-size-changes-in-efivarfs_w.patch 0003-efi-add-efivars-kobject-to-efi-sysfs-folder.patch 0004-efivarfs-Add-documentation-for-the-EFI-variable-fil.patch 0005-efivarfs-efivarfs_file_read-ensure-we-free-data-in.patch 0006-efivarfs-efivarfs_create-ensure-we-drop-our-refer.patch 0007-efivarfs-efivarfs_fill_super-fix-inode-reference.patch 0008-efivarfs-efivarfs_fill_super-ensure-we-free-our-t.patch 0009-efivarfs-efivarfs_fill_super-ensure-we-clean-up-c.patch 0010-efivarfs-Implement-exclusive-access-for-get-set-_v.patch 0011-efivarfs-Return-an-error-if-we-fail-to-read-a-variab.patch 0012-efi-Clarify-GUID-length-calculations.patch 0013-efivarfs-Replace-magic-number-with-sizeof-attributes.patch 0014-efivarfs-Add-unique-magic-number.patch 0015-efivarfs-Make-datasize-unsigned-long.patch 0016-efivarfs-Return-a-consistent-error-when-efivarfs_get.patch 0017-efivarfs-Fix-return-value-of-efivarfs_file_write.patch 0018-efivarfs-Use-query_variable_info-to-limit-kmalloc.patch 0019-efivarfs-Make-efivarfs_fill_super-static.patch [1] /lib/systemd/system/sys-firmware-efi-efivars.mount (already sent to systemd mailing list for review) [Unit] Description=EFI Variables File System Documentation=https://www.kernel.org/doc/Documentation/filesystems/efivarfs.txt DefaultDependencies=no ConditionPathExists=/sys/firmware/efi/efivars Before=sysinit.target [Mount] What=efivarfs Where=/sys/firmware/efi/efivars Type=efivarfs [2] create.c #include #include #include #include #include #include #include #include #include "def.h" int main () { const char *variable_name = "TestVar"; char file_path[PATH_MAX]; int fd, flags; mode_t mode; uint32_t attribute; char buffer[1024 + 4]; int i; snprintf (file_path, PATH_MAX, "%s%s-%s", EFIVARS_FS, variable_name, MY_GUID); flags = O_CREAT | O_WRONLY; mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; fd = open (file_path, flags, mode); if (fd < 0) { fprintf (stderr, "Failed to open %s\n", file_path); return -1; } attribute = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS; memcpy (buffer, &attribute, sizeof(uint32_t)); for (i = 0; i < 1024; i++) buffer[i+4] = 'a'; if (write (fd, buffer, 1024 + 4) != (1024 + 4)) { fprintf (stderr, "Failed to write\n"); } close (fd); return 0; } [3] delete.c #include #include #include #include "def.h" int main () { const char *variable_name = "TestVar"; char file_path[PATH_MAX]; snprintf (file_path, PATH_MAX, "%s%s-%s", EFIVARS_FS, variable_name, MY_GUID); unlink (file_path); return 0; } -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org