Implement select ; add two tests for channels.

3 files changed, 17 insertions, 2 deletions

diff --git a/src/common/include/fs.h b/src/common/include/fs.h
index 431c16f..5a2fc84 100644
--- a/src/common/include/fs.h
+++ b/src/common/include/fs.h
@@ -3,6 +3,8 @@
 #include <stdint.h>
 #include <stddef.h>
 
+typedef int fd_t;
+
 #define FT_REGULAR      0 		// no flags = regular file
 #define FT_DIR 			(0x01)
 #define FT_DEV 			(0x02)
@@ -28,6 +30,7 @@
 
 #define FM_ALL_MODES (0xFFFF)
 
+
 typedef struct {
 	int type;
 	int access;
@@ -46,4 +49,14 @@ typedef struct {
 #define IOCTL_BLOCKDEV_GET_BLOCK_SIZE   40
 #define IOCTL_BLOCKDEV_GET_BLOCK_COUNT  41
 
+
+#define SEL_READ	0x01
+#define	SEL_WRITE	0x02
+#define SEL_ERROR	0x04
+
+typedef struct {
+	fd_t fd;
+	uint16_t req_flags, got_flags;		// rq_flags : what caller is interested in
+} sel_fd_t;
+
 /* vim: set ts=4 sw=4 tw=0 noet :*/
diff --git a/src/common/include/proc.h b/src/common/include/proc.h
index 831e5c6..29b5b91 100644
--- a/src/common/include/proc.h
+++ b/src/common/include/proc.h
@@ -3,6 +3,8 @@
 #include <stddef.h>
 #include <stdint.h>
 
+typedef int pid_t;
+
 #define PS_LOADING	1
 #define PS_RUNNING  2
 #define PS_FINISHED	3
diff --git a/src/common/include/syscallproto.h b/src/common/include/syscallproto.h
index bbb49b3..9f300d3 100644
--- a/src/common/include/syscallproto.h
+++ b/src/common/include/syscallproto.h
@@ -1,9 +1,8 @@
 #pragma once
 
 #include <proc.h>
+#include <fs.h>
 
-typedef int fd_t;
-typedef int pid_t;
 typedef struct { fd_t a, b; } fd_pair_t;
 
 #define SC_MAX		128		// maximum number of syscalls
@@ -33,6 +32,7 @@ typedef struct { fd_t a, b; } fd_pair_t;
 #define SC_STAT_OPEN	35		// args: fd, out stat_t *data -- stat on open file handle
 #define SC_IOCTL		36		// args: fd, command, out void* data
 #define SC_GET_MODE		37		// args: fd -- get mode for open file handle
+#define SC_SELECT		38		// args: sel_fd_t*, count, timeout
 
 #define SC_MK_CHANNEL	40		// args: blocking?, (int, int)*
 #define SC_GEN_TOKEN	41		// args: fd, token_t*