Add support for inheritable fds on BeOS.

Bug #96331 r=arougthopher@lizardland.net

nsprpub/pr/include/md/_beos.h

@@ -312,6 +312,7 @@ struct protoent* getprotobynumber(int number);
 #define _MD_READ_DIR _MD_read_dir
 #define _MD_CLOSE_DIR _MD_close_dir
 #define _MD_MAKE_NONBLOCK _MD_make_nonblock
+#define _MD_SET_FD_INHERITABLE _MD_set_fd_inheritable
 #define _MD_INIT_FD_INHERITABLE _MD_init_fd_inheritable
 #define _MD_QUERY_FD_INHERITABLE _MD_query_fd_inheritable
 #define _MD_OPEN _MD_open

nsprpub/pr/src/io/prio.c

@@ -164,7 +164,7 @@ PR_IMPLEMENT(PRStatus) PR_SetFDInheritable(
     PRFileDesc *fd,
     PRBool inheritable)
 {
-#if defined(XP_UNIX) || defined(WIN32) || defined(XP_OS2)
+#if defined(XP_UNIX) || defined(WIN32) || defined(XP_OS2) || defined(XP_BEOS)
     /*
      * Only a non-layered, NSPR file descriptor can be inherited
      * by a child process.

nsprpub/pr/src/md/beos/bfile.c

@@ -118,18 +118,45 @@ _MD_make_nonblock (PRFileDesc *fd)
 
 }
 
+PRStatus
+_MD_set_fd_inheritable (PRFileDesc *fd, PRBool inheritable)
+{
+        int rv;
+	
+        rv = fcntl(fd->secret->md.osfd, F_SETFD, inheritable ? 0 : FD_CLOEXEC);
+        if (-1 == rv) {
+                PR_SetError(PR_UNKNOWN_ERROR, _MD_ERRNO());
+                return PR_FAILURE;
+        }
+        return PR_SUCCESS;
+}
+
 void
 _MD_init_fd_inheritable (PRFileDesc *fd, PRBool imported)
 {
-	/* XXX this function needs to be implemented */
-	fd->secret->inheritable = _PR_TRI_UNKNOWN;
+	if (imported) {
+		fd->secret->inheritable = _PR_TRI_UNKNOWN;
+	} else {
+		int flags = fcntl(fd->secret->md.osfd, F_GETFD, 0);
+		if (flags == -1) {
+			PR_SetError(PR_UNKNOWN_ERROR, _MD_ERRNO());
+			return;
+		}
+		fd->secret->inheritable = (flags & FD_CLOEXEC) ? 
+			_PR_TRI_TRUE : _PR_TRI_FALSE;
+	}
 }
 
 void
 _MD_query_fd_inheritable (PRFileDesc *fd)
 {
-	/* XXX this function needs to be implemented */
-	PR_ASSERT(0);
+	int flags;
+	
+	PR_ASSERT(_PR_TRI_UNKNOWN == fd->secret->inheritable);
+	flags = fcntl(fd->secret->md.osfd, F_GETFD, 0);
+	PR_ASSERT(-1 != flags);
+	fd->secret->inheritable = (flags & FD_CLOEXEC) ?
+		_PR_TRI_FALSE : _PR_TRI_TRUE;
 }
 
 PRInt32