[hackers] [sbase] Convert tail(1) to use size_t || FRIGN

[git]

commit fbed17362d8255c30ca0bf5477e86c38e44b6dc2
Author: FRIGN <d...@frign.de>
Date:   Mon Feb 9 15:30:23 2015 +0100

    Convert tail(1) to use size_t

diff --git a/tail.c b/tail.c
index b97ed5c..760d676 100644
--- a/tail.c
+++ b/tail.c
@@ -1,5 +1,6 @@
 /* See LICENSE file for copyright and license details. */
 #include <limits.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -11,7 +12,7 @@
 static int fflag = 0;
 
 static void
-dropinit(FILE *fp, const char *str, long n)
+dropinit(FILE *fp, const char *str, size_t n)
 {
        char *buf = NULL;
        size_t size = 0;
@@ -26,7 +27,7 @@ dropinit(FILE *fp, const char *str, long n)
 }
 
 static void
-taketail(FILE *fp, const char *str, long n)
+taketail(FILE *fp, const char *str, size_t n)
 {
        char **ring = NULL;
        long i, j;
@@ -64,7 +65,7 @@ main(int argc, char *argv[])
        size_t n = 10, tmpsize;
        int ret = 0, newline, many;
        char *lines, *tmp;
-       void (*tail)(FILE *, const char *, long) = taketail;
+       void (*tail)(FILE *, const char *, size_t) = taketail;
 
        ARGBEGIN {
        case 'f':
@@ -72,7 +73,7 @@ main(int argc, char *argv[])
                break;
        case 'n':
                lines = EARGF(usage());
-               n = estrtonum(lines, 0, LONG_MAX);
+               n = estrtonum(lines, 0, MIN(LLONG_MAX, SIZE_MAX));
                if (lines[0] == '+')
                        tail = dropinit;
                break;