sg_stpg work, device_name simplification, restore sg_read_buffer to build

git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@103 6180dd3e-e324-4e3e-922d-17de1ae2f315

1 files changed, 5 insertions, 7 deletions

diff --git a/src/sg_prevent.c b/src/sg_prevent.c
index 030890a8..5f23b11d 100644
--- a/src/sg_prevent.c
+++ b/src/sg_prevent.c
@@ -46,7 +46,7 @@
  * given SCSI device.
  */
 
-static char * version_str = "1.06 20070714";
+static char * version_str = "1.06 20070919";
 
 #define ME "sg_prevent: "
 
@@ -87,10 +87,9 @@ int main(int argc, char * argv[])
     int allow = 0;
     int prevent = -1;
     int verbose = 0;
-    char device_name[256];
+    const char * device_name = NULL;
     int ret = 0;
 
-    memset(device_name, 0, sizeof device_name);
     while (1) {
         int option_index = 0;
 
@@ -127,9 +126,8 @@ int main(int argc, char * argv[])
         }
     }
     if (optind < argc) {
-        if ('\0' == device_name[0]) {
-            strncpy(device_name, argv[optind], sizeof(device_name) - 1);
-            device_name[sizeof(device_name) - 1] = '\0';
+        if (NULL == device_name) {
+            device_name = argv[optind];
             ++optind;
         }
         if (optind < argc) {
@@ -140,7 +138,7 @@ int main(int argc, char * argv[])
             return SG_LIB_SYNTAX_ERROR;
         }
     }
-    if (0 == device_name[0]) {
+    if (NULL == device_name) {
         fprintf(stderr, "missing device name!\n");
         usage();
         return SG_LIB_SYNTAX_ERROR;