add posix_spawn [f]chdir file actions

these are presently extensions, thus named with _np to match glibc and
other implementations that provide them; however they are likely to be
standardized in the future without the _np suffix as a result of
Austin Group issue 1208. if so, both names will be kept as aliases.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/process/posix_spawn.c b/src/process/posix_spawn.c
index 306faa05..29652197 100644
--- a/src/process/posix_spawn.c
+++ b/src/process/posix_spawn.c
@@ -125,6 +125,14 @@ static int child(void *args_vp)
 					__syscall(SYS_close, fd);
 				}
 				break;
+			case FDOP_CHDIR:
+				ret = __syscall(SYS_chdir, op->path);
+				if (ret<0) goto fail;
+				break;
+			case FDOP_FCHDIR:
+				ret = __syscall(SYS_fchdir, op->fd);
+				if (ret<0) goto fail;
+				break;
 			}
 		}
 	}