os: MkdirAll, RemoveAll, Chmod, Chown, Truncate, Getgroups.

Getuid, etc drop their errors -- they cannot error

R=r
DELTA=605  (547 added, 12 deleted, 46 changed)
OCL=28919
CL=28929

1 files changed, 40 insertions, 0 deletions

diff --git a/src/lib/syscall/file_linux.go b/src/lib/syscall/file_linux.go
index c7299f839..f6b6ea7e6 100644
--- a/src/lib/syscall/file_linux.go
+++ b/src/lib/syscall/file_linux.go
@@ -131,3 +131,43 @@ func Readlink(path string, buf *byte, nbytes int64) (ret int64, errno int64) {
 	r1, r2, err := Syscall(SYS_READLINK, int64(uintptr(unsafe.Pointer(pathbuf))), int64(uintptr(unsafe.Pointer(buf))), nbytes);
 	return r1, err;
 }
+
+func Chmod(name string, mode int64) (ret, errno int64) {
+	namebuf := StringBytePtr(name);
+	r1, r2, err := Syscall(SYS_CHMOD, int64(uintptr(unsafe.Pointer(namebuf))), mode, 0);
+	return r1, err;
+}
+
+func Fchmod(fd, mode int64) (ret, errno int64) {
+	r1, r2, err := Syscall(SYS_FCHMOD, fd, mode, 0);
+	return r1, err;
+}
+
+func Chown(name string, uid, gid int64) (ret, errno int64) {
+	namebuf := StringBytePtr(name);
+	r1, r2, err := Syscall(SYS_CHOWN, int64(uintptr(unsafe.Pointer(namebuf))), uid, gid);
+	return r1, err;
+}
+
+func Lchown(name string, uid, gid int64) (ret, errno int64) {
+	namebuf := StringBytePtr(name);
+	r1, r2, err := Syscall(SYS_LCHOWN, int64(uintptr(unsafe.Pointer(namebuf))), uid, gid);
+	return r1, err;
+}
+
+func Fchown(fd, uid, gid int64) (ret, errno int64) {
+	r1, r2, err := Syscall(SYS_FCHOWN, fd, uid, gid);
+	return r1, err;
+}
+
+func Truncate(name string, length int64) (ret, errno int64) {
+	namebuf := StringBytePtr(name);
+	r1, r2, err := Syscall(SYS_TRUNCATE, int64(uintptr(unsafe.Pointer(namebuf))), length, 0);
+	return r1, err;
+}
+
+func Ftruncate(fd, length int64) (ret, errno int64) {
+	r1, r2, err := Syscall(SYS_FTRUNCATE, fd, length, 0);
+	return r1, err;
+}
+