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From c3c553db85ff10890209d0fe48fb4856ad68e4e0 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
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 <pjones@redhat.com>
---
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 3724e5f..9f96466 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 20cb608..1f921d5 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 306c9ff..3156b3b 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 316891c..ad6449d 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 dbb5900..edd8367 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;
};
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