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SUSE:SLE-12-SP2:GA
grub2.3179
0001-efidisk-move-device-path-helpers-in-core-f...
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File 0001-efidisk-move-device-path-helpers-in-core-for-efinet.patch of Package grub2.3179
From 7b386b703154c0901c4616badf18ddb260954bc1 Mon Sep 17 00:00:00 2001 From: Andrei Borzenkov <arvidjaar@gmail.com> Date: Thu, 7 May 2015 20:37:16 +0300 Subject: [PATCH 1/3] efidisk: move device path helpers in core for efinet --- grub-core/disk/efi/efidisk.c | 61 ++++++++------------------------------------ grub-core/kern/efi/efi.c | 41 +++++++++++++++++++++++++++++ include/grub/efi/efi.h | 4 +++ 3 files changed, 55 insertions(+), 51 deletions(-) diff --git a/grub-core/disk/efi/efidisk.c b/grub-core/disk/efi/efidisk.c index 60a6d3c..a8783a3 100644 --- a/grub-core/disk/efi/efidisk.c +++ b/grub-core/disk/efi/efidisk.c @@ -43,47 +43,6 @@ static struct grub_efidisk_data *fd_devices; static struct grub_efidisk_data *hd_devices; static struct grub_efidisk_data *cd_devices; -/* Duplicate a device path. */ -static grub_efi_device_path_t * -duplicate_device_path (const grub_efi_device_path_t *dp) -{ - grub_efi_device_path_t *p; - grub_size_t total_size = 0; - - for (p = (grub_efi_device_path_t *) dp; - ; - p = GRUB_EFI_NEXT_DEVICE_PATH (p)) - { - total_size += GRUB_EFI_DEVICE_PATH_LENGTH (p); - if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (p)) - break; - } - - p = grub_malloc (total_size); - if (! p) - return 0; - - grub_memcpy (p, dp, total_size); - return p; -} - -/* Return the device path node right before the end node. */ -static grub_efi_device_path_t * -find_last_device_path (const grub_efi_device_path_t *dp) -{ - grub_efi_device_path_t *next, *p; - - if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp)) - return 0; - - for (p = (grub_efi_device_path_t *) dp, next = GRUB_EFI_NEXT_DEVICE_PATH (p); - ! GRUB_EFI_END_ENTIRE_DEVICE_PATH (next); - p = next, next = GRUB_EFI_NEXT_DEVICE_PATH (next)) - ; - - return p; -} - static struct grub_efidisk_data * make_devices (void) { @@ -110,7 +69,7 @@ make_devices (void) if (! dp) continue; - ldp = find_last_device_path (dp); + ldp = grub_efi_find_last_device_path (dp); if (! ldp) /* This is empty. Why? */ continue; @@ -150,11 +109,11 @@ find_parent_device (struct grub_efidisk_data *devices, grub_efi_device_path_t *dp, *ldp; struct grub_efidisk_data *parent; - dp = duplicate_device_path (d->device_path); + dp = grub_efi_duplicate_device_path (d->device_path); if (! dp) return 0; - ldp = find_last_device_path (dp); + ldp = grub_efi_find_last_device_path (dp); ldp->type = GRUB_EFI_END_DEVICE_PATH_TYPE; ldp->subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE; ldp->length = sizeof (*ldp); @@ -180,11 +139,11 @@ is_child (struct grub_efidisk_data *child, grub_efi_device_path_t *dp, *ldp; int ret; - dp = duplicate_device_path (child->device_path); + dp = grub_efi_duplicate_device_path (child->device_path); if (! dp) return 0; - ldp = find_last_device_path (dp); + ldp = grub_efi_find_last_device_path (dp); ldp->type = GRUB_EFI_END_DEVICE_PATH_TYPE; ldp->subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE; ldp->length = sizeof (*ldp); @@ -207,8 +166,8 @@ add_device (struct grub_efidisk_data **devices, struct grub_efidisk_data *d) { int ret; - ret = grub_efi_compare_device_paths (find_last_device_path ((*p)->device_path), - find_last_device_path (d->device_path)); + ret = grub_efi_compare_device_paths (grub_efi_find_last_device_path ((*p)->device_path), + grub_efi_find_last_device_path (d->device_path)); if (ret == 0) ret = grub_efi_compare_device_paths ((*p)->device_path, d->device_path); @@ -795,7 +754,7 @@ grub_efidisk_get_device_name (grub_efi_handle_t *handle) if (! dp) return 0; - ldp = find_last_device_path (dp); + ldp = grub_efi_find_last_device_path (dp); if (! ldp) return 0; @@ -810,14 +769,14 @@ grub_efidisk_get_device_name (grub_efi_handle_t *handle) /* It is necessary to duplicate the device path so that GRUB can overwrite it. */ - dup_dp = duplicate_device_path (dp); + dup_dp = grub_efi_duplicate_device_path (dp); if (! dup_dp) return 0; while (1) { grub_efi_device_path_t *dup_ldp; - dup_ldp = find_last_device_path (dup_dp); + dup_ldp = grub_efi_find_last_device_path (dup_dp); if (!(GRUB_EFI_DEVICE_PATH_TYPE (dup_ldp) == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE && (GRUB_EFI_DEVICE_PATH_SUBTYPE (dup_ldp) == GRUB_EFI_CDROM_DEVICE_PATH_SUBTYPE || GRUB_EFI_DEVICE_PATH_SUBTYPE (dup_ldp) == GRUB_EFI_HARD_DRIVE_DEVICE_PATH_SUBTYPE))) diff --git a/grub-core/kern/efi/efi.c b/grub-core/kern/efi/efi.c index b9eb1ab..49a1501 100644 --- a/grub-core/kern/efi/efi.c +++ b/grub-core/kern/efi/efi.c @@ -394,6 +394,47 @@ grub_efi_get_device_path (grub_efi_handle_t handle) GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL); } +/* Return the device path node right before the end node. */ +grub_efi_device_path_t * +grub_efi_find_last_device_path (const grub_efi_device_path_t *dp) +{ + grub_efi_device_path_t *next, *p; + + if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp)) + return 0; + + for (p = (grub_efi_device_path_t *) dp, next = GRUB_EFI_NEXT_DEVICE_PATH (p); + ! GRUB_EFI_END_ENTIRE_DEVICE_PATH (next); + p = next, next = GRUB_EFI_NEXT_DEVICE_PATH (next)) + ; + + return p; +} + +/* Duplicate a device path. */ +grub_efi_device_path_t * +grub_efi_duplicate_device_path (const grub_efi_device_path_t *dp) +{ + grub_efi_device_path_t *p; + grub_size_t total_size = 0; + + for (p = (grub_efi_device_path_t *) dp; + ; + p = GRUB_EFI_NEXT_DEVICE_PATH (p)) + { + total_size += GRUB_EFI_DEVICE_PATH_LENGTH (p); + if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (p)) + break; + } + + p = grub_malloc (total_size); + if (! p) + return 0; + + grub_memcpy (p, dp, total_size); + return p; +} + static void dump_vendor_path (const char *type, grub_efi_vendor_device_path_t *vendor) { diff --git a/include/grub/efi/efi.h b/include/grub/efi/efi.h index 489cf9e..0e6fd86 100644 --- a/include/grub/efi/efi.h +++ b/include/grub/efi/efi.h @@ -53,6 +53,10 @@ void EXPORT_FUNC(grub_efi_print_device_path) (grub_efi_device_path_t *dp); char *EXPORT_FUNC(grub_efi_get_filename) (grub_efi_device_path_t *dp); grub_efi_device_path_t * EXPORT_FUNC(grub_efi_get_device_path) (grub_efi_handle_t handle); +grub_efi_device_path_t * +EXPORT_FUNC(grub_efi_find_last_device_path) (const grub_efi_device_path_t *dp); +grub_efi_device_path_t * +EXPORT_FUNC(grub_efi_duplicate_device_path) (const grub_efi_device_path_t *dp); grub_err_t EXPORT_FUNC (grub_efi_finish_boot_services) (grub_efi_uintn_t *outbuf_size, void *outbuf, grub_efi_uintn_t *map_key, grub_efi_uintn_t *efi_desc_size, -- 2.1.4
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