/* vi: set sw=4 ts=4: */
/*
- * Utility routines.
+ * some system calls possibly missing from libc
*
- * Copyright (C) tons of folks. Tracking down who wrote what
- * isn't something I'm going to worry about... If you wrote something
- * here, please feel free to acknowledge your work.
+ * Copyright (C) 1999-2003 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
- * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
- * Permission has been granted to redistribute this code under the GPL.
- *
*/
#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 <linux/unistd.h>
-
+#if __GNU_LIBRARY__ < 5
+/* This is needed for libc5 */
+#include <asm/unistd.h>
+#endif
#include "libbb.h"
-_syscall3(int, sysfs, int, option, unsigned int, fs_index, char *, buf);
+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...
-int pivot_root(const char * new_root,const char * put_old)
-{
- /* 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.
- */
- fprintf(stderr, "\n\nTo make this application work, you will need to recompile\n");
- fprintf(stderr, "with a kernel supporting the pivot_root system call. -Erik\n\n");
- errno=ENOSYS;
- return -1;
-}
+ /* 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
-_syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
+ return(syscall(__NR_pivot_root, new_root, put_old));
#endif
+}
+#if __GNU_LIBRARY__ < 5 || ((__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1))
-#if __GNU_LIBRARY__ < 5
/* These syscalls are not included as part of libc5 */
-_syscall2(int, bdflush, int, func, int, data);
-_syscall1(int, delete_module, const char *, name)
-
-#ifndef __NR_query_module
-#warning This kernel does not support the query_module syscall
-#warning -> The query_module system call is being stubbed out...
-int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret)
+int bdflush(int func, int data)
{
- /* BusyBox was compiled against a kernel that did not support
- * the query_module system call. To make this application work,
- * you will need to recompile with a kernel supporting the
- * query_module system call.
- */
- fprintf(stderr, "\n\nTo make this application work, you will need to recompile\n");
- fprintf(stderr, "with a kernel supporting the query_module system call. -Erik\n\n");
- errno=ENOSYS;
- return -1;
+ return(syscall(__NR_bdflush, func, data));
}
-#else
-_syscall5(int, query_module, const char *, name, int, which,
- void *, buf, size_t, bufsize, size_t*, ret);
-#endif
#ifndef __alpha__
# define __NR_klogctl __NR_syslog
- _syscall3(int, klogctl, int, type, char *, b, int, len);
+int klogctl(int type, char *b, int len)
+{
+ return(syscall(__NR_klogctl, type, b, len));
+}
#endif
-#ifndef __NR_umount2
-# warning This kernel does not support the umount2 syscall
-# warning -> The umount2 system call is being stubbed out...
+
int umount2(const char * special_file, int flags)
{
- /* 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.
- */
- fprintf(stderr, "\n\nTo make this application work, you will need to recompile\n");
- fprintf(stderr, "with a kernel supporting the umount2 system call. -Erik\n\n");
- errno=ENOSYS;
- return -1;
-}
-# else
-_syscall2(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 /* __GNU_LIBRARY__ < 5 */
-#if 0
-_syscall1(int, sysinfo, struct sysinfo *, info);
-#endif
-
-
/* END CODE */
/*
Local Variables:
projects / oweals / busybox.git / blobdiff