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117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* some system calls possibly missing from libc
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*
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* Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/syscall.h>
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#include "libbb.h"
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/* uClibc always supplies (possibly ENOSYS) versions of these functions. */
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#ifndef __UCLIBC__
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/* These syscalls are not included in very old glibc versions */
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int delete_module(const char *name)
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{
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#ifndef __NR_delete_module
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#warning This kernel does not support the delete_module syscall
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#warning -> The delete_module system call is being stubbed out...
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errno=ENOSYS;
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return -1;
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#else
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return(syscall(__NR_delete_module, name));
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#endif
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}
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int get_kernel_syms(__ptr_t ks)
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{
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#ifndef __NR_get_kernel_syms
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#warning This kernel does not support the get_kernel_syms syscall
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#warning -> The get_kernel_syms system call is being stubbed out...
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errno=ENOSYS;
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return -1;
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#else
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return(syscall(__NR_get_kernel_syms, ks));
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#endif
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}
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/* This may have 5 arguments (for old 2.0 kernels) or 2 arguments
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* (for 2.2 and 2.4 kernels). Use the greatest common denominator,
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* and let the kernel cope with whatever it gets. Its good at that. */
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int init_module(void *first, void *second, void *third, void *fourth, void *fifth)
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{
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#ifndef __NR_init_module
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#warning This kernel does not support the init_module syscall
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#warning -> The init_module system call is being stubbed out...
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errno=ENOSYS;
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return -1;
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#else
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return(syscall(__NR_init_module, first, second, third, fourth, fifth));
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#endif
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}
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int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret)
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{
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#ifndef __NR_query_module
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#warning This kernel does not support the query_module syscall
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#warning -> The query_module system call is being stubbed out...
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bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
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"BusyBox with a kernel supporting the query_module system call.\n");
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errno=ENOSYS;
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return -1;
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#else
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return(syscall(__NR_query_module, name, which, buf, bufsize, ret));
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#endif
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}
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/* Jump through hoops to fixup error return codes */
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unsigned long create_module(const char *name, size_t size)
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{
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#ifndef __NR_create_module
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#warning This kernel does not support the create_module syscall
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#warning -> The create_module system call is being stubbed out...
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errno=ENOSYS;
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return -1;
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#else
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long ret = syscall(__NR_create_module, name, size);
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if (ret == -1 && errno > 125) {
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ret = -errno;
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errno = 0;
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}
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return ret;
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#endif
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}
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#endif /* __UCLIBC__ */
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/* END CODE */
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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