--- /dev/null
+From 5b5e2985f355c8e99c196d9ce5d02c15bebadfbc Mon Sep 17 00:00:00 2001
+From: Alistair Francis <alistair.francis@wdc.com>
+Date: Thu, 29 Aug 2019 13:56:21 -0700
+Subject: [PATCH] Add support for io_pgetevents_time64 syscall
+
+32-bit architectures that are y2038 safe don't include syscalls that use
+32-bit time_t. Instead these architectures have suffixed syscalls that
+always use a 64-bit time_t. In the case of the io_getevents syscall the
+syscall has been replaced with the io_pgetevents_time64 syscall instead.
+
+This patch changes the io_getevents() function to use the correct
+syscall based on the avaliable syscalls and the time_t size. We will
+only use the new 64-bit time_t syscall if the architecture is using a
+64-bit time_t. This is to avoid having to deal with 32/64-bit
+conversions and relying on a 64-bit timespec struct on 32-bit time_t
+platforms. As of Linux 5.3 there are no 32-bit time_t architectures
+without __NR_io_getevents. In the future if a 32-bit time_t architecture
+wants to use the 64-bit syscalls we can handle the conversion.
+
+This fixes build failures on 32-bit RISC-V.
+
+Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
+
+Reviewed-by: Richard Levitte <levitte@openssl.org>
+Reviewed-by: Paul Dale <paul.dale@oracle.com>
+(Merged from https://github.com/openssl/openssl/pull/9819)
+---
+ engines/e_afalg.c | 16 ++++++++++++++++
+ 1 file changed, 16 insertions(+)
+
+diff --git a/engines/e_afalg.c b/engines/e_afalg.c
+index dacbe358cb..99516cb1bb 100644
+--- a/engines/e_afalg.c
++++ b/engines/e_afalg.c
+@@ -125,7 +125,23 @@ static ossl_inline int io_getevents(aio_context_t ctx, long min, long max,
+ struct io_event *events,
+ struct timespec *timeout)
+ {
++#if defined(__NR_io_getevents)
+ return syscall(__NR_io_getevents, ctx, min, max, events, timeout);
++#elif defined(__NR_io_pgetevents_time64)
++ /* Let's only support the 64 suffix syscalls for 64-bit time_t.
++ * This simplifies the code for us as we don't need to use a 64-bit
++ * version of timespec with a 32-bit time_t and handle converting
++ * between 64-bit and 32-bit times and check for overflows.
++ */
++ if (sizeof(timeout->tv_sec) == 8)
++ return syscall(__NR_io_pgetevents_time64, ctx, min, max, events, timeout, NULL);
++ else {
++ errno = ENOSYS;
++ return -1;
++ }
++#else
++# error "We require either the io_getevents syscall or __NR_io_pgetevents_time64."
++#endif
+ }
+
+ static void afalg_waitfd_cleanup(ASYNC_WAIT_CTX *ctx, const void *key,
+--
+2.25.1
+
--- /dev/null
+From e5499a3cac1e823c3e0697e8667e952317b70cc8 Mon Sep 17 00:00:00 2001
+From: Alistair Francis <alistair.francis@wdc.com>
+Date: Thu, 4 Mar 2021 12:10:11 -0500
+Subject: [PATCH] Fixup support for io_pgetevents_time64 syscall
+
+This is a fixup for the original commit 5b5e2985f355c8e99c196d9ce5d02c15bebadfbc
+"Add support for io_pgetevents_time64 syscall" that didn't correctly
+work for 32-bit architecutres with a 64-bit time_t that aren't RISC-V.
+
+For a full discussion of the issue see:
+https://github.com/openssl/openssl/commit/5b5e2985f355c8e99c196d9ce5d02c15bebadfbc
+
+Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
+
+Reviewed-by: Tomas Mraz <tomas@openssl.org>
+Reviewed-by: Paul Dale <pauli@openssl.org>
+(Merged from https://github.com/openssl/openssl/pull/14432)
+---
+ engines/e_afalg.c | 55 ++++++++++++++++++++++++++++++++++++-----------
+ 1 file changed, 42 insertions(+), 13 deletions(-)
+
+diff --git a/engines/e_afalg.c b/engines/e_afalg.c
+index 9480d7c24b..4e9d67db2d 100644
+--- a/engines/e_afalg.c
++++ b/engines/e_afalg.c
+@@ -124,27 +124,56 @@ static ossl_inline int io_read(aio_context_t ctx, long n, struct iocb **iocb)
+ return syscall(__NR_io_submit, ctx, n, iocb);
+ }
+
++/* A version of 'struct timespec' with 32-bit time_t and nanoseconds. */
++struct __timespec32
++{
++ __kernel_long_t tv_sec;
++ __kernel_long_t tv_nsec;
++};
++
+ static ossl_inline int io_getevents(aio_context_t ctx, long min, long max,
+ struct io_event *events,
+ struct timespec *timeout)
+ {
++#if defined(__NR_io_pgetevents_time64)
++ /* Check if we are a 32-bit architecture with a 64-bit time_t */
++ if (sizeof(*timeout) != sizeof(struct __timespec32)) {
++ int ret = syscall(__NR_io_pgetevents_time64, ctx, min, max, events,
++ timeout, NULL);
++ if (ret == 0 || errno != ENOSYS)
++ return ret;
++ }
++#endif
++
+ #if defined(__NR_io_getevents)
+- return syscall(__NR_io_getevents, ctx, min, max, events, timeout);
+-#elif defined(__NR_io_pgetevents_time64)
+- /* Let's only support the 64 suffix syscalls for 64-bit time_t.
+- * This simplifies the code for us as we don't need to use a 64-bit
+- * version of timespec with a 32-bit time_t and handle converting
+- * between 64-bit and 32-bit times and check for overflows.
+- */
+- if (sizeof(timeout->tv_sec) == 8)
+- return syscall(__NR_io_pgetevents_time64, ctx, min, max, events, timeout, NULL);
++ if (sizeof(*timeout) == sizeof(struct __timespec32))
++ /*
++ * time_t matches our architecture length, we can just use
++ * __NR_io_getevents
++ */
++ return syscall(__NR_io_getevents, ctx, min, max, events, timeout);
+ else {
+- errno = ENOSYS;
+- return -1;
++ /*
++ * We don't have __NR_io_pgetevents_time64, but we are using a
++ * 64-bit time_t on a 32-bit architecture. If we can fit the
++ * timeout value in a 32-bit time_t, then let's do that
++ * and then use the __NR_io_getevents syscall.
++ */
++ if (timeout && timeout->tv_sec == (long)timeout->tv_sec) {
++ struct __timespec32 ts32;
++
++ ts32.tv_sec = (__kernel_long_t) timeout->tv_sec;
++ ts32.tv_nsec = (__kernel_long_t) timeout->tv_nsec;
++
++ return syscall(__NR_io_getevents, ctx, min, max, events, ts32);
++ } else {
++ return syscall(__NR_io_getevents, ctx, min, max, events, NULL);
++ }
+ }
+-#else
+-# error "We require either the io_getevents syscall or __NR_io_pgetevents_time64."
+ #endif
++
++ errno = ENOSYS;
++ return -1;
+ }
+
+ static void afalg_waitfd_cleanup(ASYNC_WAIT_CTX *ctx, const void *key,
+--
+2.25.1
+
projects / buildroot.git / commitdiff