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/* vi: set sw=4 ts=4: */
/*
* some system calls possibly missing from libc
*
* 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
* 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>
#include <sys/syscall.h>
#include "libbb.h"
/* uClibc always supplies (possibly ENOSYS) versions of these functions. */
#ifndef __UCLIBC__
/* These syscalls are not included in very old glibc versions */
int delete_module(const char *name)
{
#ifndef __NR_delete_module
#warning This kernel does not support the delete_module syscall
#warning -> The delete_module system call is being stubbed out...
errno=ENOSYS;
return -1;
#else
return(syscall(__NR_delete_module, name));
#endif
}
int get_kernel_syms(__ptr_t ks)
{
#ifndef __NR_get_kernel_syms
#warning This kernel does not support the get_kernel_syms syscall
#warning -> The get_kernel_syms system call is being stubbed out...
errno=ENOSYS;
return -1;
#else
return(syscall(__NR_get_kernel_syms, ks));
#endif
}
/* This may have 5 arguments (for old 2.0 kernels) or 2 arguments
* (for 2.2 and 2.4 kernels). Use the greatest common denominator,
* and let the kernel cope with whatever it gets. Its good at that. */
int init_module(void *first, void *second, void *third, void *fourth, void *fifth)
{
#ifndef __NR_init_module
#warning This kernel does not support the init_module syscall
#warning -> The init_module system call is being stubbed out...
errno=ENOSYS;
return -1;
#else
return(syscall(__NR_init_module, first, second, third, fourth, fifth));
#endif
}
int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret)
{
#ifndef __NR_query_module
#warning This kernel does not support the query_module syscall
#warning -> The query_module system call is being stubbed out...
bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
"BusyBox with a kernel supporting the query_module system call.\n");
errno=ENOSYS;
return -1;
#else
return(syscall(__NR_query_module, name, which, buf, bufsize, ret));
#endif
}
/* Jump through hoops to fixup error return codes */
unsigned long create_module(const char *name, size_t size)
{
#ifndef __NR_create_module
#warning This kernel does not support the create_module syscall
#warning -> The create_module system call is being stubbed out...
errno=ENOSYS;
return -1;
#else
long ret = syscall(__NR_create_module, name, size);
if (ret == -1 && errno > 125) {
ret = -errno;
errno = 0;
}
return ret;
#endif
}
#endif /* __UCLIBC__ */
/* END CODE */
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
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