added more syscalls

5 files changed, 27 insertions, 1 deletions

diff --git a/sys/src/chdir.c b/sys/src/chdir.c
index fd1385d..d64446a 100644
--- a/sys/src/chdir.c
+++ b/sys/src/chdir.c
@@ -3,5 +3,6 @@
 int
 sys·chdir(char *path)
 {
-    return syscall(·Chdir, path);
+    intptr ret = syscall(·Chdir, path);
+    return error(ret);
 }
diff --git a/sys/src/chdirfd.c b/sys/src/chdirfd.c
new file mode 100644
index 0000000..ad84d2b
--- /dev/null
+++ b/sys/src/chdirfd.c
@@ -0,0 +1,8 @@
+#include "internal.h"
+
+int
+sys·chdirfd(int fd)
+{
+    intptr ret = syscall(·FChdir, fd);
+    return error(ret);
+}
diff --git a/sys/src/exec.c b/sys/src/exec.c
new file mode 100644
index 0000000..d00e9dd
--- /dev/null
+++ b/sys/src/exec.c
@@ -0,0 +1,8 @@
+#include "internal.h"
+
+int
+sys·exec(char *prog, char *argv[], char *env[])
+{
+    intptr ret = syscall(·ExecVe, prog, argv, env);
+    return error(ret);
+}
diff --git a/sys/src/fork.c b/sys/src/fork.c
new file mode 100644
index 0000000..c33caa2
--- /dev/null
+++ b/sys/src/fork.c
@@ -0,0 +1,8 @@
+#include "internal.h"
+
+int
+sys·fork(void)
+{
+    intptr ret = syscall(·Fork);
+    return error(ret);
+}
diff --git a/sys/src/internal.h b/sys/src/internal.h
index bf3d0ec..e8bb76c 100644
--- a/sys/src/internal.h
+++ b/sys/src/internal.h
@@ -4,6 +4,7 @@
 #include <sys.h>
 #include <syscall.h>
 
+#define syscall0(n)                      _syscall0(n)
 #define syscall1(n,a1)                   _syscall1(n,sysarg(a1))
 #define syscall2(n,a1,a2)                _syscall2(n,sysarg(a1),sysarg(a2))
 #define syscall3(n,a1,a2,a3)             _syscall3(n,sysarg(a1),sysarg(a2),sysarg(a3))