memzap

commit fdcc971d1dc2e851e4a50eae1f3424d68f00b351
parent a260739367a4e344eae9de5d1d997ee3c50ce667
Author: sin <sin@2f30.org>
Date:   Fri,  1 Mar 2013 12:11:23 +0000

memzap: Add a `verbose' flag to control verbosity levels

Diffstat:
M
memzap.c
 | 
15
++++++++++-----

1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/memzap.c b/memzap.c
@@ -2,6 +2,8 @@
 
 #include "data.h"
 
+static int verbose = 0;
+
 void
 readmem(pid_t pid, void *buf, off_t offset, size_t size)
 {
@@ -52,8 +54,9 @@ main(int argc, char *argv[])
 	addr = (char *)strtoul(argv[2], NULL, 16);
 	len = strtoul(argv[3], NULL, 10);
 
-	printf("[+] Base address: %p, length: %zu\n",
-	       addr, len);
+	if (verbose > 0)
+		printf("[+] Base address: %p, length: %zu\n",
+		       addr, len);
 
 	pid = fork();
 	if (pid < 0)
@@ -70,7 +73,8 @@ main(int argc, char *argv[])
 		break;
 	}
 
-	printf("[+] Mapping buffers into memory\n");
+	if (verbose > 0)
+		printf("[+] Mapping buffers into memory\n");
 
 	buf = mmap(0, len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON,
 		   -1, 0);
@@ -84,8 +88,9 @@ main(int argc, char *argv[])
 		err(1, "mmap");
 	}
 
-	printf("[+] Single stepping child with pid %jd\n",
-	       (intmax_t)pid);
+	if (verbose > 0)
+		printf("[+] Single stepping child with pid %jd\n",
+		       (intmax_t)pid);
 
 	ret = ptrace(PTRACE_SINGLESTEP, pid, NULL, NULL);
 	if (ret < 0)