Changeset 597 for trunk/libs/mini-libc

Timestamp:

Nov 10, 2018, 2:56:43 PM (5 years ago)

Author:

alain

Message:

Rewrite the mmap() and stat() syscalls to implement the cat command in ksh.

Location:

trunk/libs/mini-libc

Files:

• mman.c (modified) (2 diffs)
• mman.h (modified) (1 diff)
• stat.c (modified) (1 diff)
• stat.h (modified) (1 diff)

trunk/libs/mini-libc/mman.c

@@ -28 +28 @@
 #include <stdio.h>
 
-////////////////////////////////y
+////////////////////////////////
 int munmap( void         * addr,
             unsigned int   size )
@@ -47 +47 @@
     mmap_attr_t attr;
 
-    attr.addr   = addr;
+    // addr argument must be NULL
+    if( addr != NULL )
+    {
+        printf("\n[ERROR] in %s : the <addr> argument must be NULL\n", __FUNCTION__ );
+        return NULL;
+    }
+
+    //set the mmap attributes 
+    attr.addr   = NULL;
     attr.length = length;
     attr.prot   = prot;

trunk/libs/mini-libc/mman.h

@@ -40 +40 @@
  * @ addr    : requested address in virtual space / unused : should be NULL.
  * @ length  : requested number of bytes.
- * @ prot    : access mode.
- * @ flags   : MAP_FILE / MAP_ANON / MAP_PRIVATE / MAP_SHARED.
+ * @ prot    : access mode bit vector (PROT_EXEC / PROT_READ / PROT_WRITE)
+ * @ flags   : bit_vector (MAP_FILE / MAP_ANON / MAPREMOTE / MAP_PRIVATE / MAP_SHARED)
  * @ fdid    : file descriptor index (if MAP_FILE).
  * @ offset  : offset in file (if MAP_FILE).

trunk/libs/mini-libc/stat.c

@@ -45 +45 @@
 }
 
-///////////////////////////////
-int chmod( char     * pathname,
+///////////////////////////////////
+int chmod( char         * pathname,
            unsigned int   rights )
 {

trunk/libs/mini-libc/stat.h

@@ -77 +77 @@
 int stat( const char  * pathname,
           struct stat * stat );
+
 #endif /* _SYS_STAT_H_ */