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authorRobert Morris <[email protected]>2023-09-07 09:24:01 -0400
committerRobert Morris <[email protected]>2023-09-07 09:24:01 -0400
commit87de947c747042fe7de95ace74b272a88ff686a8 (patch)
tree575122ac42932698dc890e0476846c2066dd8ff4 /user/trace.c
parent74c1eba516fdb0ec1a17b16be7e76613ccba92bf (diff)
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2nd lab
Diffstat (limited to 'user/trace.c')
-rw-r--r--user/trace.c27
1 files changed, 27 insertions, 0 deletions
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);
+}