X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=init.c;h=89c66afa0e1b8b439ce5a534f76e5d83183431ce;hb=4241ea8fb0606f9bd5b7ed1278d3b7825883acf6;hp=f3cb9ad6c18d44581d13d67e8d850ab791d2442b;hpb=e6203e9e73039537d41810e91e3dfe6abeb919d9;p=fio.git

diff --git a/init.c b/init.c
index f3cb9ad6..89c66afa 100644
--- a/init.c
+++ b/init.c
@@ -35,6 +35,7 @@ FILE *f_out = NULL;
 FILE *f_err = NULL;
 
 int write_bw_log = 0;
+int read_only = 0;
 
 static int def_timeout = 0;
 static int write_lat_log = 0;
@@ -89,7 +90,12 @@ static struct option long_options[FIO_NR_OPTIONS] = {
 	{
 		.name		= "showcmd",
 		.has_arg	= no_argument,
-		.val		= 's'
+		.val		= 's',
+	},
+	{
+		.name		= "readonly",
+		.has_arg	= no_argument,
+		.val		= 'r',
 	},
 	{
 		.name		= NULL,
@@ -180,6 +186,11 @@ static int fixup_options(struct thread_data *td)
 {
 	struct thread_options *o = &td->o;
 
+	if (read_only && td_write(td)) {
+		log_err("fio: job <%s> has write bit set, but fio is in read-only mode\n", td->o.name);
+		return 1;
+	}
+	
 	if (o->rwmix[DDIR_READ] + o->rwmix[DDIR_WRITE] > 100)
 		o->rwmix[DDIR_WRITE] = 100 - o->rwmix[DDIR_READ];
 
@@ -768,6 +779,9 @@ static int parse_cmd_line(int argc, char *argv[])
 		case 's':
 			dump_cmdline = 1;
 			break;
+		case 'r':
+			read_only = 1;
+			break;
 		case 'v':
 			printf("%s\n", fio_version_string);
 			exit(0);