cat_nonblock: Use canonical name scheme and fix unintended assignment

examples/other/cat_noblock.c → examples/other/cat_nonblock.c

@@ -1,5 +1,5 @@
 /*
- *  cat_noblock.c - open a file and display its contents, but exit rather than
+ *  cat_nonblock.c - open a file and display its contents, but exit rather than
  *  wait for input.
  */
 #include <errno.h>  /* for errno */
@@ -16,7 +16,6 @@ int main(int argc, char *argv[])
     size_t bytes;           /* The number of bytes read */
     char buffer[MAX_BYTES]; /* The buffer for the bytes */
 
-
     /* Usage */
     if (argc != 2) {
         printf("Usage: %s <filename>\n", argv[0]);
@@ -29,17 +28,12 @@ int main(int argc, char *argv[])
 
     /* If open failed */
     if (fd == -1) {
-        if (errno = EAGAIN)
-            puts("Open would block");
-        else
-            puts("Open failed");
+        puts(errno == EAGAIN ? "Open would block" : "Open failed");
         exit(-1);
     }
 
     /* Read the file and output its contents */
     do {
-        int i;
-
         /* Read characters from the file */
         bytes = read(fd, buffer, MAX_BYTES);
 
@@ -54,11 +48,12 @@ int main(int argc, char *argv[])
 
         /* Print the characters */
         if (bytes > 0) {
-            for (i = 0; i < bytes; i++)
+            for (int i = 0; i < bytes; i++)
                 putchar(buffer[i]);
         }
 
         /* While there are no errors and the file isn't over */
     } while (bytes > 0);
+
     return 0;
 }

lkmpg.tex

@@ -1238,7 +1238,7 @@ There is one more point to remember. Some times processes don't want to sleep, t
 
 \begin{verbatim}
 $ sudo insmod sleep.ko
-$ cat_noblock /proc/sleep
+$ cat_nonblock /proc/sleep
 Last input:
 $ tail -f /proc/sleep &
 Last input:
@@ -1250,18 +1250,18 @@ Last input:
 Last input:
 tail: /proc/sleep: file truncated
 [1] 6540
-$ cat_noblock /proc/sleep
+$ cat_nonblock /proc/sleep
 Open would block
 $ kill %1
 [1]+  Terminated              tail -f /proc/sleep
-$ cat_noblock /proc/sleep
+$ cat_nonblock /proc/sleep
 Last input:
 $
 \end{verbatim}
 
 \samplec{examples/sleep.c}
 
-\samplec{examples/other/cat_noblock.c}
+\samplec{examples/other/cat_nonblock.c}
 
 \subsection{Completions}
 \label{sec:orgd9f9de4}