Kickoff

1 files changed, 32 insertions, 0 deletions

diff --git a/mystdlib.h b/mystdlib.h
new file mode 100644
index 0000000..2e9499f
--- /dev/null
+++ b/mystdlib.h
@@ -0,0 +1,32 @@
+#include <sys/types.h>
+#include <stdio.h>
+
+typedef struct { int fh; unsigned char *addr; size_t size; } *MAP;
+
+/* Mapps a file into memory
+   returns pointer to the mapping struct,
+   containing the file's size, the mapped
+   address and its file handle.
+
+   If readonly is true, the file will be
+   opened and mapped read only. File is
+   opened and mapped writable, if false.
+
+   Returns NULL if memory could not be
+   allocated, file could not be opened or
+   mapped. Gives out an diagnostic message
+   on stderr
+*/
+MAP map_file( char *filename, int readonly );
+
+/* Unmapps a file from memory. NULL pointer
+   checks are being done, so this is safe
+   to be called from cleanup without knowing
+   whether there actually is a map.
+*/
+void unmap_file ( MAP *pMap );
+
+/* Gets file size of open file
+   returns != 0 in case of error */
+inline int getfilesize( int fd, unsigned long *size );
+