Provide IRT process interface

src/untrusted/irt/irt_dev.h

Index: src/untrusted/irt/irt_dev.h
diff --git a/src/untrusted/irt/irt_dev.h b/src/untrusted/irt/irt_dev.h
index 22ec0e1e16f288ff941fd1de3f3ea5e8f5750ce6..055bf265ca65d6d432b150f7927d88521602f184 100644
--- a/src/untrusted/irt/irt_dev.h
+++ b/src/untrusted/irt/irt_dev.h
@@ -16,11 +16,30 @@ struct timeval;
 
 struct NaClMemMappingInfo;
 
+#include <spawn.h>
+
 #if defined(__cplusplus)
 extern "C" {
 #endif
 
 #define NACL_IRT_DEV_FDIO_v0_2  "nacl-irt-dev-fdio-0.2"
+struct nacl_irt_dev_fdio_v0_2 {
+  int (*close)(int fd);
+  int (*dup)(int fd, int *newfd);
+  int (*dup2)(int fd, int newfd);
+  int (*read)(int fd, void *buf, size_t count, size_t *nread);
+  int (*write)(int fd, const void *buf, size_t count, size_t *nwrote);
+  int (*seek)(int fd, off_t offset, int whence, off_t *new_offset);
+  int (*fstat)(int fd, struct stat *);
+  int (*getdents)(int fd, struct dirent *, size_t count, size_t *nread);
+  int (*fchdir)(int fd);
+  int (*fchmod)(int fd, mode_t mode);
+  int (*fsync)(int fd);
+  int (*fdatasync)(int fd);
+  int (*ftruncate)(int fd, off_t length);
+};
+
+#define NACL_IRT_DEV_FDIO_v0_3  "nacl-irt-dev-fdio-0.3"
 struct nacl_irt_dev_fdio {
   int (*close)(int fd);
   int (*dup)(int fd, int *newfd);
@@ -35,6 +54,7 @@ struct nacl_irt_dev_fdio {
   int (*fsync)(int fd);
   int (*fdatasync)(int fd);
   int (*ftruncate)(int fd, off_t length);
+  int (*pipe)(int pipefd[2]);
 };
 
 /*
@@ -81,6 +101,25 @@ struct nacl_irt_dev_list_mappings {
                        size_t count, size_t *result_count);
 };
 
+#define NACL_IRT_DEV_PROCESS_v0_1 "nacl-irt-dev-process-0.1"
+struct nacl_irt_dev_process {
+  int (*getpid)(pid_t *pid);
+  int (*getppid)(pid_t *ppid);
+  int (*setpgid)(pid_t pid, pid_t pgid);
+  int (*getpgid)(pid_t pid, pid_t *pgid);
+  int (*setsid)(pid_t *sid);
+  int (*getsid)(pid_t pid, pid_t *sid);
+  int (*kill)(pid_t pid, int sig);
+  int (*posix_spawn)(pid_t *pid, const char *path,
+                     const posix_spawn_file_actions_t *file_actions,
+                     const posix_spawnattr_t *attrp,
+                     char *const argv[], char *const envp[]);
+  int (*signal)(int sig, sighandler_t handler, sighandler_t *oldhandler);
+  int (*sigprocmask)(int how, const sigset_t *set, sigset_t *oldset);
+  int (*wait)(int *pid, int *status);
+  int (*waitpid)(int *pid, int *status, int options);
+};
+
 #if defined(__cplusplus)
 }
 #endif