Initial

1 files changed, 26 insertions, 0 deletions

diff --git a/cbits/mmap.c b/cbits/mmap.c
new file mode 100644
index 0000000..079959f
--- /dev/null
+++ b/cbits/mmap.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+
+void* ircbrowse_mmap(int fd, size_t *lengthp) {
+  struct stat statbuf;
+  int ret = fstat(fd, &statbuf);
+  if (ret < 0) {
+    perror("stat");
+    return NULL;
+  }
+  void *addr = mmap(NULL, statbuf.st_size, PROT_READ, MAP_SHARED, fd, 0);
+  if (addr == NULL) {
+    perror("mmap");
+  }
+  if (lengthp != NULL) *lengthp = statbuf.st_size;
+  return addr;
+}
+
+void ircbrowse_munmap(void *addr, size_t length) {
+  int ret = munmap(addr, length);
+  if (ret < 0) {
+    perror("munmap");
+  }
+}