From 72629c342d40f21fa1a10cf7dd47b1ec98b33b79 Mon Sep 17 00:00:00 2001 From: Michael Olbrich Date: Sun, 18 Aug 2019 14:17:51 +0200 Subject: efivar: version bump 36 -> 37 This fixes building with gcc 9.x Signed-off-by: Michael Olbrich --- ...ormat_guid-handle-misaligned-guid-pointer.patch | 55 +++++++ ...-places-Werror-address-of-packed-member-c.patch | 167 +++++++++++++++++++++ patches/efivar-37/series | 5 + rules/efivar.make | 4 +- 4 files changed, 229 insertions(+), 2 deletions(-) create mode 100644 patches/efivar-37/0001-dp.h-make-format_guid-handle-misaligned-guid-pointer.patch create mode 100644 patches/efivar-37/0002-Fix-all-the-places-Werror-address-of-packed-member-c.patch create mode 100644 patches/efivar-37/series diff --git a/patches/efivar-37/0001-dp.h-make-format_guid-handle-misaligned-guid-pointer.patch b/patches/efivar-37/0001-dp.h-make-format_guid-handle-misaligned-guid-pointer.patch new file mode 100644 index 000000000..89e913a74 --- /dev/null +++ b/patches/efivar-37/0001-dp.h-make-format_guid-handle-misaligned-guid-pointer.patch @@ -0,0 +1,55 @@ +From: Peter Jones +Date: Mon, 7 Jan 2019 10:30:59 -0500 +Subject: [PATCH] dp.h: make format_guid() handle misaligned guid pointers + safely. + +GCC 9 adds -Werror=address-of-packed-member, which causes us to see the +build error reported at + https://bugzilla.opensuse.org/show_bug.cgi?id=1120862 . + +That bug report shows us the following: + +In file included from dp.c:26: +dp.h: In function 'format_vendor_helper': +dp.h:120:37: error: taking address of packed member of 'struct ' may result in an unaligned pointer value [-Werror=address-of-packed-member] + 120 | format_guid(buf, size, off, label, &dp->hw_vendor.vendor_guid); + | ^~~~~~~~~~~~~~~~~~~~~~~~~~ +dp.h:74:25: note: in definition of macro 'format_guid' + 74 | _rc = efi_guid_to_str(guid, &_guidstr); \ + | ^~~~ +cc1: all warnings being treated as errors + +This patch makes format_guid() use a local variable as a bounce buffer +in the case that the guid we're passed is aligned as chaotic neutral. + +Note that this only fixes this instance and there may be others that bz +didn't show because it exited too soon, and I don't have a gcc 9 build +in front of me right now. + +Signed-off-by: Peter Jones +--- + src/dp.h | 11 +++++++++-- + 1 file changed, 9 insertions(+), 2 deletions(-) + +diff --git a/src/dp.h b/src/dp.h +index aa4e3902992d..20cb608d05f7 100644 +--- a/src/dp.h ++++ b/src/dp.h +@@ -70,8 +70,15 @@ + #define format_guid(buf, size, off, dp_type, guid) ({ \ + int _rc; \ + char *_guidstr = NULL; \ +- \ +- _rc = efi_guid_to_str(guid, &_guidstr); \ ++ efi_guid_t _guid; \ ++ const efi_guid_t * const _guid_p = \ ++ likely(__alignof__(guid) == sizeof(guid)) \ ++ ? guid \ ++ : &_guid; \ ++ \ ++ if (unlikely(__alignof__(guid) == sizeof(guid))) \ ++ memmove(&_guid, guid, sizeof(_guid)); \ ++ _rc = efi_guid_to_str(_guid_p, &_guidstr); \ + if (_rc < 0) { \ + efi_error("could not build %s GUID DP string", \ + dp_type); \ diff --git a/patches/efivar-37/0002-Fix-all-the-places-Werror-address-of-packed-member-c.patch b/patches/efivar-37/0002-Fix-all-the-places-Werror-address-of-packed-member-c.patch new file mode 100644 index 000000000..7653bd80a --- /dev/null +++ b/patches/efivar-37/0002-Fix-all-the-places-Werror-address-of-packed-member-c.patch @@ -0,0 +1,167 @@ +From: Peter Jones +Date: Thu, 21 Feb 2019 15:20:12 -0500 +Subject: [PATCH] Fix all the places -Werror=address-of-packed-member catches. + +This gets rid of all the places GCC 9's -Werror=address-of-packed-member +flags as problematic. + +Fixes github issue #123 + +Signed-off-by: Peter Jones +--- + src/dp-message.c | 6 ++++-- + src/dp.h | 12 ++++-------- + src/guid.c | 2 +- + src/include/efivar/efivar.h | 2 +- + src/ucs2.h | 27 +++++++++++++++++++-------- + 5 files changed, 29 insertions(+), 20 deletions(-) + +diff --git a/src/dp-message.c b/src/dp-message.c +index 3724e5f57bdb..9f964663de86 100644 +--- a/src/dp-message.c ++++ b/src/dp-message.c +@@ -620,11 +620,13 @@ _format_message_dn(char *buf, size_t size, const_efidp dp) + ) / sizeof(efi_ip_addr_t); + format(buf, size, off, "Dns", "Dns("); + for (int i=0; i < end; i++) { +- const efi_ip_addr_t *addr = &dp->dns.addrs[i]; ++ efi_ip_addr_t addr; ++ ++ memcpy(&addr, &dp->dns.addrs[i], sizeof(addr)); + if (i != 0) + format(buf, size, off, "Dns", ","); + format_ip_addr(buf, size, off, "Dns", +- dp->dns.is_ipv6, addr); ++ dp->dns.is_ipv6, &addr); + } + format(buf, size, off, "Dns", ")"); + break; +diff --git a/src/dp.h b/src/dp.h +index 20cb608d05f7..1f921d524aaf 100644 +--- a/src/dp.h ++++ b/src/dp.h +@@ -71,13 +71,9 @@ + int _rc; \ + char *_guidstr = NULL; \ + efi_guid_t _guid; \ +- const efi_guid_t * const _guid_p = \ +- likely(__alignof__(guid) == sizeof(guid)) \ +- ? guid \ +- : &_guid; \ +- \ +- if (unlikely(__alignof__(guid) == sizeof(guid))) \ +- memmove(&_guid, guid, sizeof(_guid)); \ ++ const efi_guid_t * const _guid_p = &_guid; \ ++ \ ++ memmove(&_guid, guid, sizeof(_guid)); \ + _rc = efi_guid_to_str(_guid_p, &_guidstr); \ + if (_rc < 0) { \ + efi_error("could not build %s GUID DP string", \ +@@ -86,7 +82,7 @@ + _guidstr = onstack(_guidstr, \ + strlen(_guidstr)+1); \ + _rc = format(buf, size, off, dp_type, "%s", \ +- _guidstr); \ ++ _guidstr); \ + } \ + _rc; \ + }) +diff --git a/src/guid.c b/src/guid.c +index 306c9ff8287c..3156b3b7c60a 100644 +--- a/src/guid.c ++++ b/src/guid.c +@@ -31,7 +31,7 @@ + extern const efi_guid_t efi_guid_zero; + + int NONNULL(1, 2) PUBLIC +-efi_guid_cmp(const efi_guid_t *a, const efi_guid_t *b) ++efi_guid_cmp(const void * const a, const void * const b) + { + return memcmp(a, b, sizeof (efi_guid_t)); + } +diff --git a/src/include/efivar/efivar.h b/src/include/efivar/efivar.h +index 316891ccae9c..ad6449d9d938 100644 +--- a/src/include/efivar/efivar.h ++++ b/src/include/efivar/efivar.h +@@ -128,7 +128,7 @@ extern int efi_symbol_to_guid(const char *symbol, efi_guid_t *guid) + + extern int efi_guid_is_zero(const efi_guid_t *guid); + extern int efi_guid_is_empty(const efi_guid_t *guid); +-extern int efi_guid_cmp(const efi_guid_t *a, const efi_guid_t *b); ++extern int efi_guid_cmp(const void * const a, const void * const b); + + /* import / export functions */ + typedef struct efi_variable efi_variable_t; +diff --git a/src/ucs2.h b/src/ucs2.h +index dbb59004b7c0..edd8367b4bcc 100644 +--- a/src/ucs2.h ++++ b/src/ucs2.h +@@ -23,16 +23,21 @@ + (((val) & ((mask) << (shift))) >> (shift)) + + static inline size_t UNUSED +-ucs2len(const uint16_t * const s, ssize_t limit) ++ucs2len(const void *vs, ssize_t limit) + { + ssize_t i; +- for (i = 0; i < (limit >= 0 ? limit : i+1) && s[i] != (uint16_t)0; i++) ++ const uint16_t *s = vs; ++ const uint8_t *s8 = vs; ++ ++ for (i = 0; ++ i < (limit >= 0 ? limit : i+1) && s8[0] != 0 && s8[1] != 0; ++ i++, s8 += 2, s++) + ; + return i; + } + + static inline size_t UNUSED +-ucs2size(const uint16_t * const s, ssize_t limit) ++ucs2size(const void *s, ssize_t limit) + { + size_t rc = ucs2len(s, limit); + rc *= sizeof (uint16_t); +@@ -69,10 +74,11 @@ utf8size(uint8_t *s, ssize_t limit) + } + + static inline unsigned char * UNUSED +-ucs2_to_utf8(const uint16_t * const chars, ssize_t limit) ++ucs2_to_utf8(const void * const voidchars, ssize_t limit) + { + ssize_t i, j; + unsigned char *ret; ++ const uint16_t * const chars = voidchars; + + if (limit < 0) + limit = ucs2len(chars, -1); +@@ -124,10 +130,12 @@ ucs2_to_utf8(const uint16_t * const chars, ssize_t limit) + } + + static inline ssize_t UNUSED NONNULL(4) +-utf8_to_ucs2(uint16_t *ucs2, ssize_t size, int terminate, uint8_t *utf8) ++utf8_to_ucs2(void *ucs2void, ssize_t size, int terminate, uint8_t *utf8) + { + ssize_t req; + ssize_t i, j; ++ uint16_t *ucs2 = ucs2void; ++ uint16_t val16; + + if (!ucs2 && size > 0) { + errno = EINVAL; +@@ -162,10 +170,13 @@ utf8_to_ucs2(uint16_t *ucs2, ssize_t size, int terminate, uint8_t *utf8) + val = utf8[i] & 0x7f; + i += 1; + } +- ucs2[j] = val; ++ val16 = val; ++ ucs2[j] = val16; ++ } ++ if (terminate) { ++ val16 = 0; ++ ucs2[j++] = val16; + } +- if (terminate) +- ucs2[j++] = (uint16_t)0; + return j; + }; + diff --git a/patches/efivar-37/series b/patches/efivar-37/series new file mode 100644 index 000000000..e6f14fec2 --- /dev/null +++ b/patches/efivar-37/series @@ -0,0 +1,5 @@ +# generated by git-ptx-patches +#tag:base --start-number 1 +0001-dp.h-make-format_guid-handle-misaligned-guid-pointer.patch +0002-Fix-all-the-places-Werror-address-of-packed-member-c.patch +# cbb8f240dc2a442323107d34454fa178 - git-ptx-patches magic diff --git a/rules/efivar.make b/rules/efivar.make index d91baca95..cae2d5cba 100644 --- a/rules/efivar.make +++ b/rules/efivar.make @@ -14,8 +14,8 @@ PACKAGES-$(PTXCONF_EFIVAR) += efivar # # Paths and names # -EFIVAR_VERSION := 36 -EFIVAR_MD5 := e98140ab7105e90059dc57a67c8c07e9 +EFIVAR_VERSION := 37 +EFIVAR_MD5 := 9f067275c5f7aafdd75bfb364280ac9c EFIVAR := efivar-$(EFIVAR_VERSION) EFIVAR_SUFFIX := tar.bz2 EFIVAR_URL := https://github.com/rhboot/efivar/releases/download/$(EFIVAR_VERSION)/$(EFIVAR).$(EFIVAR_SUFFIX) -- cgit v1.2.3