X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=engines%2Fsg.c;h=4540b57354cd1c1d02e84faa429cd6e069aa376c;hp=2148e87c190f8c1dfc4f648aecb99796888ca777;hb=6b86fc18e13d1c8f36b24c409f4c7653508c7f85;hpb=861e3790be5f1e22b16e827b142147e530205441

diff --git a/engines/sg.c b/engines/sg.c
index 2148e87c..4540b573 100644
--- a/engines/sg.c
+++ b/engines/sg.c
@@ -124,7 +124,7 @@ static int fio_sgio_getevents(struct thread_data *td, unsigned int min,
 	}
 
 	while (left) {
-		void *p;
+		char *p;
 
 		dprint(FD_IO, "sgio_getevents: sd %p: left=%d\n", sd, left);
 
@@ -184,7 +184,7 @@ re_read:
 			if (hdr->info & SG_INFO_CHECK) {
 				struct io_u *io_u;
 				io_u = (struct io_u *)(hdr->usr_ptr);
-				memcpy((void*)&(io_u->hdr), (void*)hdr, sizeof(struct sg_io_hdr));
+				memcpy(&io_u->hdr, hdr, sizeof(struct sg_io_hdr));
 				sd->events[i]->error = EIO;
 			}
 		}
@@ -572,17 +572,17 @@ static char *fio_sgio_errdetails(struct io_u *io_u)
 	struct sg_io_hdr *hdr = &io_u->hdr;
 #define MAXERRDETAIL 1024
 #define MAXMSGCHUNK  128
-	char *msg, msgchunk[MAXMSGCHUNK], *ret = NULL;
+	char *msg, msgchunk[MAXMSGCHUNK];
 	int i;
 
 	msg = calloc(1, MAXERRDETAIL);
+	strcpy(msg, "");
 
 	/*
 	 * can't seem to find sg_err.h, so I'll just echo the define values
 	 * so others can search on internet to find clearer clues of meaning.
 	 */
 	if (hdr->info & SG_INFO_CHECK) {
-		ret = msg;
 		if (hdr->host_status) {
 			snprintf(msgchunk, MAXMSGCHUNK, "SG Host Status: 0x%02x; ", hdr->host_status);
 			strlcat(msg, msgchunk, MAXERRDETAIL);
@@ -755,14 +755,14 @@ static char *fio_sgio_errdetails(struct io_u *io_u)
 		if (hdr->resid != 0) {
 			snprintf(msgchunk, MAXMSGCHUNK, "SG Driver: %d bytes out of %d not transferred. ", hdr->resid, hdr->dxfer_len);
 			strlcat(msg, msgchunk, MAXERRDETAIL);
-			ret = msg;
 		}
 	}
 
-	if (!ret)
-		ret = strdup("SG Driver did not report a Host, Driver or Device check");
+	if (!(hdr->info & SG_INFO_CHECK) && !strlen(msg))
+		strncpy(msg, "SG Driver did not report a Host, Driver or Device check",
+			MAXERRDETAIL - 1);
 
-	return ret;
+	return msg;
 }
 
 /*