Finalisation de l'exo 2

TP2/Exo2/exo2.c

@@ -0,0 +1,46 @@
+#include <fcntl.h>
+#include <unistd.h>
+#include <assert.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <string.h>
+
+#define BLOCK_SIZE 1
+
+int main(int argc, char *argv[])
+{
+    int fin,
+        fout;
+    char buf[BLOCK_SIZE];
+    struct stat st;
+
+    assert( argc == 3 );
+
+    fin = open(argv[1],O_RDONLY);
+    assert( fin >= 0 );
+
+    fstat(fin, &st);
+
+    char *src = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fin, 0);
+    assert(src != MAP_FAILED);
+
+    fout = open(argv[2],O_CREAT|O_RDWR|O_TRUNC,0600);
+    assert( fout >= 0 );
+
+    ftruncate(fout, st.st_size);
+
+    char *dst = mmap(NULL, st.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fout, 0);
+    assert(dst != MAP_FAILED);
+
+    memcpy(dst, src, st.st_size);
+
+    munmap(src, st.st_size);
+    munmap(dst, st.st_size);
+
+    close(fin);
+    close(fout);
+
+    return 0;
+
+}