Give a better error if we can't find a sig alg

[openssl.git] / engines / e_afalg.c

diff --git a/engines/e_afalg.c b/engines/e_afalg.c
index dacbe358cb6a8628dd0ecd93f8912052835fd954..814917aa0a68de19214955f5b4049e7e3427ff6b 100644 (file)
--- 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,
@@ -457,7 +473,7 @@ static int afalg_start_cipher_sk(afalg_ctx *actx, const unsigned char *in,
 
     /*
      * vmsplice and splice are used to pin the user space input buffer for
-     * kernel space processing avoiding copys from user to kernel space
+     * kernel space processing avoiding copies from user to kernel space
      */
     ret = vmsplice(actx->zc_pipe[1], &iov, 1, SPLICE_F_GIFT);
     if (ret < 0) {