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-rw-r--r--libbb/module_syscalls.c116
1 files changed, 0 insertions, 116 deletions
diff --git a/libbb/module_syscalls.c b/libbb/module_syscalls.c
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--- a/libbb/module_syscalls.c
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1/* vi: set sw=4 ts=4: */
2/*
3 * some system calls possibly missing from libc
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#include <stdio.h>
24#include <errno.h>
25#include <unistd.h>
26#include <sys/syscall.h>
27#include "libbb.h"
28
29/* uClibc always supplies (possibly ENOSYS) versions of these functions. */
30#ifndef __UCLIBC__
31
32/* These syscalls are not included in very old glibc versions */
33int delete_module(const char *name)
34{
35#ifndef __NR_delete_module
36#warning This kernel does not support the delete_module syscall
37#warning -> The delete_module system call is being stubbed out...
38 errno=ENOSYS;
39 return -1;
40#else
41 return(syscall(__NR_delete_module, name));
42#endif
43}
44
45int get_kernel_syms(__ptr_t ks)
46{
47#ifndef __NR_get_kernel_syms
48#warning This kernel does not support the get_kernel_syms syscall
49#warning -> The get_kernel_syms system call is being stubbed out...
50 errno=ENOSYS;
51 return -1;
52#else
53 return(syscall(__NR_get_kernel_syms, ks));
54#endif
55}
56
57/* This may have 5 arguments (for old 2.0 kernels) or 2 arguments
58 * (for 2.2 and 2.4 kernels). Use the greatest common denominator,
59 * and let the kernel cope with whatever it gets. Its good at that. */
60int init_module(void *first, void *second, void *third, void *fourth, void *fifth)
61{
62#ifndef __NR_init_module
63#warning This kernel does not support the init_module syscall
64#warning -> The init_module system call is being stubbed out...
65 errno=ENOSYS;
66 return -1;
67#else
68 return(syscall(__NR_init_module, first, second, third, fourth, fifth));
69#endif
70}
71
72int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret)
73{
74#ifndef __NR_query_module
75#warning This kernel does not support the query_module syscall
76#warning -> The query_module system call is being stubbed out...
77 bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
78 "BusyBox with a kernel supporting the query_module system call.\n");
79 errno=ENOSYS;
80 return -1;
81#else
82 return(syscall(__NR_query_module, name, which, buf, bufsize, ret));
83#endif
84}
85
86/* Jump through hoops to fixup error return codes */
87unsigned long create_module(const char *name, size_t size)
88{
89#ifndef __NR_create_module
90#warning This kernel does not support the create_module syscall
91#warning -> The create_module system call is being stubbed out...
92 errno=ENOSYS;
93 return -1;
94#else
95 long ret = syscall(__NR_create_module, name, size);
96
97 if (ret == -1 && errno > 125) {
98 ret = -errno;
99 errno = 0;
100 }
101 return ret;
102#endif
103}
104
105
106#endif /* __UCLIBC__ */
107
108/* END CODE */
109/*
110Local Variables:
111c-file-style: "linux"
112c-basic-offset: 4
113tab-width: 4
114End:
115*/
116