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Make all syscall declarations use the syscall() function

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This commit is contained in:
Eric Andersen 2003-05-26 18:48:56 +00:00
parent b0cfca7544
commit 82ab3d7c3e
3 changed files with 77 additions and 63 deletions
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13
include/libbb.h
View File

@ -66,6 +66,19 @@ extern int daemon (int nochdir, int noclose);
char *strtok_r(char *s, const char *delim, char **ptrptr);
#endif
/* Convenience macros to test the version of gcc. */
#if defined __GNUC__ && defined __GNUC_MINOR__
# define __GNUC_PREREQ(maj, min) \
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#else
# define __GNUC_PREREQ(maj, min) 0
#endif
/* __restrict is known in EGCS 1.2 and above. */
#if !__GNUC_PREREQ (2,92)
# define __restrict /* Ignore */
#endif
/* Some useful definitions */
#define FALSE ((int) 0)
#define TRUE ((int) 1)

47
libbb/module_syscalls.c
View File

@ -37,42 +37,47 @@
#if __GNU_LIBRARY__ < 5 || ((__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1))
/* These syscalls are not included as part of libc5 */
_syscall1(int, delete_module, const char *, name);
_syscall1(int, get_kernel_syms, __ptr_t, ks);
int delete_module(const char *name)
{
return(syscall(__NR_delete_module, name));
}
int get_kernel_syms(__ptr_t ks)
{
return(syscall(__NR_get_kernel_syms, ks));
}
/* 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. */
_syscall5(int, init_module, void *, first, void *, second, void *, third,
void *, fourth, void *, fifth);
int init_module(void *first, void *second, void *third, void *fourth, void *fifth)
{
return(syscall(__NR_init_module, first, second, third, fourth, fifth));
}
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...
int query_module(const char *name, int which, void *buf, size_t bufsize, size_t *ret)
{
bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
"with a kernel supporting the query_module system call. -Erik\n");
errno=ENOSYS;
return -1;
}
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
_syscall5(int, query_module, const char *, name, int, which,
void *, buf, size_t, bufsize, size_t*, ret);
return(syscall(__NR_query_module, name, which, buf, bufsize, 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);
long ret = syscall(__NR_create_module, name, size);
if (ret == -1 && errno > 125) {
ret = -errno;
errno = 0;
}
return ret;
if (ret == -1 && errno > 125) {
ret = -errno;
errno = 0;
}
return ret;
}
#endif /* __GNU_LIBRARY__ < 5 */

80
libbb/syscalls.c
View File

@ -34,71 +34,67 @@
#endif
#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
int pivot_root(const char * new_root,const char * put_old)
{
#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.
*/
bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
"with a kernel supporting the pivot_root system call. -Erik\n");
errno=ENOSYS;
return -1;
}
/* 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.
*/
bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
"BusyBox with a kernel supporting the pivot_root system call.\n");
errno=ENOSYS;
return -1;
#else
# 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
return(syscall(__NR_pivot_root, new_root, put_old));
#endif
}
#if __GNU_LIBRARY__ < 5 || ((__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1))
/* These syscalls are not included as part of libc5 */
_syscall2(int, bdflush, int, func, int, data);
int bdflush(int func, int data)
{
return(syscall(__NR_bdflush, func, data));
}
#ifndef __alpha__
# define __NR_klogctl __NR_syslog
_syscall3(int, klogctl, int, type, char *, b, int, len);
int klogctl(int type, char *b, int len)
{
return(syscall(__NR_klogctl, type, b, len));
}
#endif
#ifndef __NR_umount2
# warning This kernel does not support the umount2 syscall
# 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
* the umount2 system call. To make this application work,
* you will need to recompile with a kernel supporting the
* umount2 system call.
*/
bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
"with a kernel supporting the umount2 system call. -Erik\n");
errno=ENOSYS;
return -1;
}
# else
_syscall2(int, umount2, const char *, special_file, int, flags);
#ifndef __NR_pivot_root
#warning This kernel does not support the umount2 syscall
#warning -> The umount2 system call is being stubbed out...
/* BusyBox was compiled against a kernel that did not support
* the umount2 system call. To make this application work,
* you will need to recompile with a kernel supporting the
* umount2 system call.
*/
bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
"BusyBox with a kernel supporting the umount2 system call.\n");
errno=ENOSYS;
return -1;
#else
return(syscall(__NR_umount2, special_file, flags));
#endif
}
#endif /* __GNU_LIBRARY__ < 5 */