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authorEric Andersen2001-04-05 06:08:14 +0000
committerEric Andersen2001-04-05 06:08:14 +0000
commita2a978ae23e267c24eb7b11662afdcc9ea47e789 (patch)
treef9927bd24dbc96724b1c0b89327d4c7157ed8eb4 /libbb
parentfdefbbbe85b852ba6de361c8f53d025b09b9abbe (diff)
downloadbusybox-a2a978ae23e267c24eb7b11662afdcc9ea47e789.zip
busybox-a2a978ae23e267c24eb7b11662afdcc9ea47e789.tar.gz
Some further syscall adjustments. Split the module syscalls out of
insmod and into libbb. Only enable them for libc5. glibc and uClibc don't need them. -Erik
Diffstat (limited to 'libbb')
-rw-r--r--libbb/module_syscalls.c88
-rw-r--r--libbb/syscalls.c61
2 files changed, 113 insertions, 36 deletions
diff --git a/libbb/module_syscalls.c b/libbb/module_syscalls.c
new file mode 100644
index 0000000..d0c1a36
--- /dev/null
+++ b/libbb/module_syscalls.c
@@ -0,0 +1,88 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * some system calls possibly missing from libc
+ *
+ * Copyright (C) 1999,2000,2001 by Lineo, inc.
+ * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.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 <asm/unistd.h>
+#include "libbb.h"
+
+#define __NR_new_sys_init_module __NR_init_module
+_syscall2(int, new_sys_init_module, const char *, name,
+ const struct new_module *, info);
+
+#define __NR_old_sys_init_module __NR_init_module
+_syscall5(int, old_sys_init_module, const char *, name, char *, code,
+ unsigned, codesize, struct old_mod_routines *, routines,
+ struct old_symbol_table *, symtab);
+
+#if __GNU_LIBRARY__ < 5
+/* These syscalls are not included as part of libc5 */
+_syscall1(int, delete_module, const char *, name);
+_syscall1(int, get_kernel_syms, struct old_kernel_sym *, ks);
+
+#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)
+{
+ 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
+
+/* Jump through hoops to fixup error return codes */
+#define __NR__create_module __NR_create_module
+static inline _syscall2(long, _create_module, const char *, name, size_t, size)
+unsigned long create_module(const char *name, size_t size)
+{
+ long ret = _create_module(name, size);
+
+ if (ret == -1 && errno > 125) {
+ ret = -errno;
+ errno = 0;
+ }
+ return ret;
+}
+
+#endif /* __GNU_LIBRARY__ < 5 */
+
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
+
diff --git a/libbb/syscalls.c b/libbb/syscalls.c
index efca399..4a846eb 100644
--- a/libbb/syscalls.c
+++ b/libbb/syscalls.c
@@ -1,10 +1,9 @@
/* 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) 1999,2000,2001 by Lineo, inc.
+ * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.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
@@ -20,19 +19,28 @@
* 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 <sys/syscall.h>
-#include <linux/unistd.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 <asm/unistd.h>
#include "libbb.h"
+#if defined(__ia64__)
+int sysfs( int option, unsigned int fs_index, char * buf)
+{
+ return(syscall(__NR_sysfs, option, fs_index, buf));
+}
+#else
_syscall3(int, sysfs, int, option, unsigned int, fs_index, char *, buf);
+#endif
#ifndef __NR_pivot_root
#warning This kernel does not support the pivot_root syscall
@@ -50,7 +58,14 @@ int pivot_root(const char * new_root,const char * put_old)
return -1;
}
#else
-_syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
+# if defined(__ia64__)
+ int pivot_root(const char * new_root,const char * put_old)
+ {
+ return(syscall(__NR_pivot_root, new_root, put_old));
+ }
+# else
+ _syscall2(int,pivot_root,const char *,new_root,const char *,put_old);
+# endif
#endif
@@ -59,27 +74,6 @@ _syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
#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
#ifndef __alpha__
# define __NR_klogctl __NR_syslog
@@ -109,11 +103,6 @@ _syscall2(int, umount2, const char *, special_file, int, flags);
#endif /* __GNU_LIBRARY__ < 5 */
-#if 0
-_syscall1(int, sysinfo, struct sysinfo *, info);
-#endif
-
-
/* END CODE */
/*
Local Variables: