[hackers] [sbase] Check mmap() return value and unmap at the end || sin

[git]

commit fe6144793fe7d2a4d674204f675d2e48a2fe06d2
Author: sin <s...@2f30.org>
Date:   Mon Jan 20 11:25:57 2014 +0000

    Check mmap() return value and unmap at the end

diff --git a/tr.c b/tr.c
index 8cca430..a4ddef9 100644
--- a/tr.c
+++ b/tr.c
@@ -124,6 +124,8 @@ main(int argc, char *argv[])
 
        mappings = (wchar_t *)mmap(NULL, 0x110000 * sizeof(wchar_t),
                                   PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, 
-1, 0);
+       if (mappings == MAP_FAILED)
+               eprintf("mmap:");
 
        ARGBEGIN {
        default:
@@ -147,5 +149,7 @@ main(int argc, char *argv[])
        if(ferror(stdin))
                eprintf("<stdin>: read error:");
 
+       munmap(mappings, 0x110000 * sizeof(wchar_t));
+
        return EXIT_SUCCESS;
 }