1 files changed, 105 insertions, 0 deletions

diff --git a/busybox/libbb/syscalls.c b/busybox/libbb/syscalls.c
new file mode 100644
index 000000000..9e89dbd39
--- /dev/null
+++ b/busybox/libbb/syscalls.c
@@ -0,0 +1,105 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * some system calls possibly missing from libc
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+/* Kernel headers before 2.1.mumble need this on the Alpha to get
+   _syscall* defined.  */
+#define __LIBRARY__
+#include <sys/syscall.h>
+#include "libbb.h"
+
+int sysfs( int option, unsigned int fs_index, char * buf)
+{
+        return(syscall(__NR_sysfs, option, fs_index, buf));
+}
+
+int pivot_root(const char * new_root,const char * put_old)
+{
+#ifndef __NR_pivot_root
+#warning This kernel does not support the pivot_root syscall
+#warning -> The pivot_root system call is being stubbed out...
+    /* BusyBox was compiled against a kernel that did not support
+     *  the pivot_root system call.  To make this application work,
+     *  you will need to recompile with a kernel supporting the
+     *  pivot_root system call.
+     */
+    bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
+            "BusyBox with a kernel supporting the pivot_root system call.\n");
+    errno=ENOSYS;
+    return -1;
+#else
+    return(syscall(__NR_pivot_root, new_root, put_old));
+#endif
+}
+
+
+
+/* These syscalls are not included in ancient glibc versions */
+#if ((__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1))
+
+int bdflush(int func, int data)
+{
+    return(syscall(__NR_bdflush, func, data));
+}
+
+#ifndef __alpha__
+# define __NR_klogctl __NR_syslog
+int klogctl(int type, char *b, int len)
+{
+    return(syscall(__NR_klogctl, type, b, len));
+}
+#endif
+
+
+int umount2(const char * special_file, int flags)
+{
+#ifndef __NR_pivot_root
+#warning This kernel does not support the umount2 syscall
+#warning -> The umount2 system call is being stubbed out...
+    /* BusyBox was compiled against a kernel that did not support
+     *  the umount2 system call.  To make this application work,
+     *  you will need to recompile with a kernel supporting the
+     *  umount2 system call.
+     */
+    bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
+            "BusyBox with a kernel supporting the umount2 system call.\n");
+    errno=ENOSYS;
+    return -1;
+#else
+    return(syscall(__NR_umount2, special_file, flags));
+#endif
+}
+
+
+#endif
+
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/