Changeset 260 for soft/giet_vm/giet_libs

Timestamp:

Dec 9, 2013, 5:26:37 PM (11 years ago)

Author:

devigne

Message:

Add a new syscall : giet_fat_fstat, allowing to a user application to know the
size (in sectors) of an open file.

Location:

soft/giet_vm/giet_libs

Files:

• stdio.c (modified) (1 diff)
• stdio.h (modified) (2 diffs)

soft/giet_vm/giet_libs/stdio.c

@@ -744 +744 @@
                      0 );
 }
+
+///////////////////////////////////////////////////////////////////////////////////
+// giet_fat_fstat()
+///////////////////////////////////////////////////////////////////////////////////
+// Return stats of a file identified by "fd". 
+// (Only the file_size in sectors for this moment)
+///////////////////////////////////////////////////////////////////////////////////
+int giet_fat_fstat( unsigned int fd )
+{
+    return sys_call( SYSCALL_FAT_FSTAT,
+                     fd,
+                     0, 0, 0 );
+}
+
 ///////////////////////////////////////////////////////////////////////////////////
 // giet_fat_close()

soft/giet_vm/giet_libs/stdio.h

@@ -50 +50 @@
 #define SYSCALL_FAT_WRITE         0x22
 #define SYSCALL_FAT_LSEEK         0x23
-#define SYSCALL_FAT_CLOSE         0x24
+#define SYSCALL_FAT_FSTAT         0x24
+#define SYSCALL_FAT_CLOSE         0x25
 
 //////////////////////////////////////////////////////////////////////////////////
@@ -182 +183 @@
                            unsigned int whence );
 
+extern int giet_fat_fstat( unsigned int fd );
+
 extern int giet_fat_close( unsigned int fd );