wip

mmapcp.cc

@@ -8,37 +8,52 @@
 
 int main(int argc, char *argv[])
 {
-        int s, d;
-        struct stat st;
-        void *sp, *dp;
-        s = open(argv[1], O_RDONLY);
-        if (s == -1) {
-                perror("open source");
-                exit(1);
-        }
-        d = open(argv[2], O_RDWR | O_CREAT | O_TRUNC, 0644);
-        if (d == -1) {
-                perror("open destintation");
-                exit(1);
-        }
-        if (fstat(s, &st)) {
-                perror("stat source");
-                exit(1);
-        }
-        if (ftruncate(d, st.st_size)) {
-                perror("truncate destination");
-                exit(1);
-        }
-        sp = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, s, 0);
-        if (sp == MAP_FAILED) {
-                perror("map source");
-                exit(1);
-        }
-        dp = mmap(NULL, st.st_size, PROT_WRITE | PROT_READ, MAP_SHARED, d, 0);
-        if (dp == MAP_FAILED) {
-                perror("map destintation");
-                exit(1);
-        }
-        memcpy(dp, sp, st.st_size);
-        return 0;
+  int s, s2, d;
+  struct stat st;
+  struct stat s2t;
+  void *sp, *s2p, *dp;
+  s = open(argv[1], O_RDONLY);
+  if (s == -1) {
+    perror("open source");
+    exit(1);
+  }
+  s2 = open(argv[2], O_RDONLY);
+  if (s2 == -1) {
+    perror("open source2");
+    exit(1);
+  }
+  d = open(argv[3], O_RDWR | O_CREAT | O_TRUNC, 0644);
+  if (d == -1) {
+    perror("open destination");
+    exit(1);
+  }
+  if (fstat(s, &st)) {
+    perror("stat source");
+    exit(1);
+  }
+  if (fstat(s2, &s2t)) {
+    perror("stat source2");
+    exit(1);
+  }
+  if (ftruncate(d, st.st_size + s2t.st_size)) {
+    perror("truncate destination");
+    exit(1);
+  }
+  sp = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, s, 0);
+  if (sp == MAP_FAILED) {
+    perror("map source");
+    exit(1);
+  }
+  s2p = mmap(NULL, s2t.st_size, PROT_READ, MAP_SHARED, s2, 0);
+  if (s2p == MAP_FAILED) {
+    perror("map source2");
+    exit(1);
+  }
+  dp = mmap(NULL, st.st_size + s2t.st_size, PROT_WRITE | PROT_READ, MAP_SHARED, d, 0);
+  if (dp == MAP_FAILED) {
+    perror("map destination");
+    exit(1);
+  }
+  memcpy(dp, sp, st.st_size);
+  return 0;
 }

mymom

@@ -0,0 +1 @@
+mymom

urmom

@@ -0,0 +1 @@
+urmom