From 87de947c747042fe7de95ace74b272a88ff686a8 Mon Sep 17 00:00:00 2001 From: Robert Morris Date: Thu, 7 Sep 2023 09:24:01 -0400 Subject: 2nd lab --- user/trace.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 user/trace.c (limited to 'user/trace.c') diff --git a/user/trace.c b/user/trace.c new file mode 100644 index 0000000..dd77760 --- /dev/null +++ b/user/trace.c @@ -0,0 +1,27 @@ +#include "kernel/param.h" +#include "kernel/types.h" +#include "kernel/stat.h" +#include "user/user.h" + +int +main(int argc, char *argv[]) +{ + int i; + char *nargv[MAXARG]; + + if(argc < 3 || (argv[1][0] < '0' || argv[1][0] > '9')){ + fprintf(2, "Usage: %s mask command\n", argv[0]); + exit(1); + } + + if (trace(atoi(argv[1])) < 0) { + fprintf(2, "%s: trace failed\n", argv[0]); + exit(1); + } + + for(i = 2; i < argc && i < MAXARG; i++){ + nargv[i-2] = argv[i]; + } + exec(nargv[0], nargv); + exit(0); +} -- cgit v1.2.3