From e76c3b08e105147e3cef7e8d38d65da2fac6b2e1 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Thu, 5 Apr 2001 03:14:39 +0000
Subject: A number of cleanups.  Now compiles with libc5, glibc, and uClibc. 
 Fix a few shadowed variables.  Move (almost) all syscalls to
 libbb/syscalls.c, so I can handle them sanely and all at once.  -Erik

---
 libbb/libbb.h    |  1 +
 libbb/syscalls.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++----------
 2 files changed, 61 insertions(+), 12 deletions(-)

(limited to 'libbb')

diff --git a/libbb/libbb.h b/libbb/libbb.h
index d850befea..d0896ab86 100644
--- a/libbb/libbb.h
+++ b/libbb/libbb.h
@@ -211,5 +211,6 @@ enum {
 };
 
 int ask_confirmation(void);
+int klogctl(int type, char * b, int len);
 
 #endif /* __LIBBB_H__ */
diff --git a/libbb/syscalls.c b/libbb/syscalls.c
index 021154602..efca39902 100644
--- a/libbb/syscalls.c
+++ b/libbb/syscalls.c
@@ -32,18 +32,63 @@
 
 #include "libbb.h"
 
+_syscall3(int, sysfs, int, option, unsigned int, fs_index, char *, buf);
 
-_syscall1(int, sysinfo, struct sysinfo *, info);
+#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;
+}
+#else
+_syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
+#endif
+
+
+
+
+#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)
+{
+	/* 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;
+}
+#else
+_syscall5(int, query_module, const char *, name, int, which,
+		void *, buf, size_t, bufsize, size_t*, ret);
+#endif
 
-/* Include our own version of <sys/mount.h>, since libc5 doesn't
- * know about umount2 */
-extern _syscall1(int, umount, const char *, special_file);
-extern _syscall5(int, mount, const char *, special_file, const char *, dir,
-		const char *, fstype, unsigned long int, rwflag, const void *, data);
+#ifndef __alpha__
+# define __NR_klogctl __NR_syslog
+  _syscall3(int, klogctl, int, type, char *, b, int, len);
+#endif
 
 #ifndef __NR_umount2
 # warning This kernel does not support the umount2 syscall
-# warning The umount2 system call is being stubbed out...
+# 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
@@ -57,14 +102,17 @@ int umount2(const char * special_file, int flags)
 	return -1;
 }
 # else
-extern _syscall2(int, umount2, const char *, special_file, int, flags);
+_syscall2(int, umount2, const char *, special_file, int, flags);
 #endif
 
-#ifndef __NR_query_module
-static const int __NR_query_module = 167;
+
+#endif /* __GNU_LIBRARY__ < 5 */
+
+
+#if 0
+_syscall1(int, sysinfo, struct sysinfo *, info);
 #endif
-_syscall5(int, query_module, const char *, name, int, which,
-		void *, buf, size_t, bufsize, size_t*, ret);
+
 
 /* END CODE */
 /*
-- 
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