we are now prepared for piping with _pipe and _dup2

1 files changed, 29 insertions, 11 deletions

diff --git a/kernel/syscalls.h b/kernel/syscalls.h
index b7422af..d90e314 100644
--- a/kernel/syscalls.h
+++ b/kernel/syscalls.h
@@ -1,3 +1,17 @@
+/** 
+ * @file
+ *
+ * Fool OS - System Call Interface
+ * ===============================
+ *
+ * Most of the syscalls are loosely based on a very small subset of the
+ * linux system calls. 
+ *
+ * They seem enough to back a small C Library as newlib in this case.
+ *
+ * 
+ */
+
 #define SYSCALL_EXIT         60
 #define SYSCALL_EXECVE       64
 #define SYSCALL_FORK         72
@@ -10,28 +24,32 @@
 #define SYSCALL_LINK         82
 #define SYSCALL_LSEEK        69
 #define SYSCALL_READ         62
-#define SYSCALL_SBRK         70 // linux??
-#define SYSCALL_STAT         74
-#define SYSCALL_FSTAT        67
-#define SYSCALL_LSTAT        79
+#define SYSCALL_SBRK         70
+#define SYSCALL_STAT         74 // need all?
+#define SYSCALL_FSTAT        67 // need all?
+#define SYSCALL_LSTAT        79 // need all?
 #define SYSCALL_TIMES        75
 #define SYSCALL_UNLINK       76
 #define SYSCALL_WAIT         77
 #define SYSCALL_WRITE        61
 #define SYSCALL_GETTIMEOFDAY 71
-#define SYSCALL_READDIR      63 // getdents?
+#define SYSCALL_READDIR      63 // linux has getdents
 #define SYSCALL_KILL         73
-#define SYSCALL_POLL         80 //shit!?
 #define SYSCALL_CLONE        83
 #define SYSCALL_PIPE         84 
-// TODO!  SYSCALL_MKNOD?
+#define SYSCALL_DUP2         86
+
+/** Todo move somewhere else and init per process , think how to make thread safe */
+void fd_init_std_streams(uint32_t pid);
+
+/** returns string representation of the syscall from its number */
+char*    syscall_get_name(uint32_t num);
 
-char* syscall_get_name(uint32_t num);
+/** invoke a syscall from kernel */
 uint32_t syscall_generic(uint32_t nr,uint32_t p1, uint32_t p2, uint32_t p3, uint32_t pid);
-uint32_t syscall_generic_test(uint32_t nr,uint32_t p1, uint32_t p2, uint32_t p3, uint32_t pid);
 
-int syscall_open(char *name, int flags, int mode);
-int syscall_write(int file, char *buf, int len);
+/** test if a specific syscall is ready to be processed */
+uint32_t syscall_generic_test(uint32_t nr,uint32_t p1, uint32_t p2, uint32_t p3, uint32_t pid);
 
 // new planned syscalls for graphx
 // TODO: split ncurses and our syscalls??