summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/common/syscalls.c
diff options
context:
space:
mode:
Diffstat (limited to 'libc/sysdeps/linux/common/syscalls.c')
-rw-r--r--libc/sysdeps/linux/common/syscalls.c144
1 files changed, 98 insertions, 46 deletions
diff --git a/libc/sysdeps/linux/common/syscalls.c b/libc/sysdeps/linux/common/syscalls.c
index 6b5261afb..b1fe3dc98 100644
--- a/libc/sysdeps/linux/common/syscalls.c
+++ b/libc/sysdeps/linux/common/syscalls.c
@@ -38,9 +38,15 @@ _syscall1(void, _exit, int, status);
//#define __NR_fork 2
#ifdef L_fork
+#include <unistd.h>
# ifdef __UCLIBC_HAS_MMU__
-# include <unistd.h>
_syscall0(pid_t, fork);
+# else
+ pid_t fork(void)
+ {
+ __set_errno(ENOSYS);
+ return -1;
+ }
# endif
#endif
@@ -292,7 +298,6 @@ _syscall1(int, rmdir, const char *, pathname);
//#define __NR_dup 41
#ifdef L_dup
-
#include <unistd.h>
_syscall1(int, dup, int, oldfd);
#endif
@@ -329,37 +334,43 @@ _syscall0(gid_t, getgid);
//#define __NR_geteuid 49
#ifdef L_geteuid
-#ifdef __NR_geteuid
-#include <unistd.h>
-_syscall0(uid_t, geteuid);
-#else
-uid_t geteuid(void)
-{
- return (getuid());
-}
-#endif
+# ifdef __NR_geteuid
+# include <unistd.h>
+ _syscall0(uid_t, geteuid);
+# else
+ uid_t geteuid(void)
+ {
+ return (getuid());
+ }
+# endif
#endif
//#define __NR_getegid 50
#ifdef L_getegid
-#ifdef __NR_getegid
-#include <unistd.h>
-_syscall0(gid_t, getegid);
-#else
-gid_t getegid(void)
-{
- return (getgid());
-}
-#endif
+# ifdef __NR_getegid
+# include <unistd.h>
+ _syscall0(gid_t, getegid);
+# else
+ gid_t getegid(void)
+ {
+ return (getgid());
+ }
+# endif
#endif
//#define __NR_acct 51
-#ifdef __NR_umount2 /* Old kernels don't have umount2 */
//#define __NR_umount2 52
-# ifdef L_umount2
+#ifdef L_umount2
+# ifdef __NR_umount2 /* Old kernels don't have umount2 */
# include <sys/mount.h>
_syscall2(int, umount2, const char *, special_file, int, flags);
+# else
+ int umount2(const char * special_file, int flags)
+ {
+ __set_errno(ENOSYS);
+ return -1;
+ }
# endif
#endif
@@ -370,7 +381,6 @@ gid_t getegid(void)
#include <stdarg.h>
#include <sys/ioctl.h>
#define __NR__ioctl __NR_ioctl
-
extern int _ioctl(int fd, int request, void *arg);
_syscall3(int, _ioctl, int, fd, int, request, void *, arg);
@@ -386,7 +396,6 @@ int ioctl(int fd, unsigned long int request, ...)
va_end(list);
return _ioctl(fd, request, arg);
}
-
#endif
//#define __NR_fcntl 55
@@ -394,7 +403,6 @@ int ioctl(int fd, unsigned long int request, ...)
#include <stdarg.h>
#include <fcntl.h>
#define __NR__fcntl __NR_fcntl
-
extern int _fcntl(int fd, int cmd, long arg);
_syscall3(int, _fcntl, int, fd, int, cmd, long, arg);
@@ -446,15 +454,15 @@ _syscall2(int, dup2, int, oldfd, int, newfd);
//#define __NR_getppid 64
#ifdef L_getppid
-#include <unistd.h>
-#ifdef __NR_getppid
-_syscall0(pid_t, getppid);
-#else
-pid_t getppid(void)
-{
- return (getpid());
-}
-#endif
+# include <unistd.h>
+# ifdef __NR_getppid
+ _syscall0(pid_t, getppid);
+# else
+ pid_t getppid(void)
+ {
+ return (getpid());
+ }
+# endif
#endif
//#define __NR_getpgrp 65
@@ -588,7 +596,6 @@ _syscall2(int, swapon, const char *, path, int, swapflags);
//#define __NR_reboot 88
#ifdef L__reboot
#define __NR__reboot __NR_reboot
-
extern int _reboot(int magic, int magic2, int flag);
_syscall3(int, _reboot, int, magic, int, magic2, int, flag);
@@ -606,7 +613,6 @@ int reboot(int flag)
#define __NR__mmap __NR_mmap
#include <unistd.h>
#include <sys/mman.h>
-
extern __ptr_t _mmap(unsigned long *buffer);
_syscall1(__ptr_t, _mmap, unsigned long *, buffer);
@@ -683,11 +689,17 @@ _syscall2(int, statfs, const char *, path, struct statfs *, buf);
_syscall2(int, fstatfs, int, fd, struct statfs *, buf);
#endif
-#ifdef __UCLIBC_HAS_MMU__
//#define __NR_ioperm 101
-# ifdef L_ioperm
-# include <sys/io.h>
+#ifdef L_ioperm
+#include <sys/io.h>
+# if defined __UCLIBC_HAS_MMU__ && defined __NR_ioperm
_syscall3(int, ioperm, unsigned long, from, unsigned long, num, int, turn_on);
+# else
+ int ioperm(unsigned long from, unsigned long num, int turn_on)
+ {
+ __set_errno(ENOSYS);
+ return -1;
+ }
# endif
#endif
@@ -700,7 +712,6 @@ _syscall2(int, socketcall, int, call, unsigned long *, args);
#ifdef L__syslog
#include <unistd.h>
#define __NR__syslog __NR_syslog
-
extern int _syslog(int type, char *buf, int len);
_syscall3(int, _syslog, int, type, char *, buf, int, len);
@@ -802,12 +813,18 @@ int fstat(int filedes, struct libc_stat *buf)
//#define __NR_olduname 109
-#if defined __UCLIBC_HAS_MMU__ && defined __NR_iopl
//#define __NR_iopl 110
#ifdef L_iopl
#include <sys/io.h>
-_syscall1(int, iopl, int, level);
-#endif
+# if defined __UCLIBC_HAS_MMU__ && defined __NR_iopl
+ _syscall1(int, iopl, int, level);
+# else
+ int iopl(int level)
+ {
+ __set_errno(ENOSYS);
+ return -1;
+ }
+# endif
#endif
//#define __NR_vhangup 111
@@ -906,6 +923,12 @@ _syscall5(int, init_module, void *, first, void *, second, void *, third,
#ifdef L_delete_module
# ifdef __NR_delete_module
_syscall1(int, delete_module, const char *, name);
+# else
+ int delete_module(const char * name)
+ {
+ __set_errno(ENOSYS);
+ return -1;
+ }
# endif
#endif
@@ -1048,8 +1071,15 @@ _syscall4(__ptr_t, mremap, __ptr_t, old_address, size_t, old_size, size_t,
//#define __NR_query_module 167
#ifdef L_query_module
# ifdef __NR_query_module
- _syscall5(int, query_module, const char *, name, int, which,
- void *, buf, size_t, bufsize, size_t*, ret);
+ _syscall5(int, query_module, const char *, name, int, which,
+ void *, buf, size_t, bufsize, size_t*, ret);
+# else
+ int query_module(const char * name, int which,
+ void * buf, size_t bufsize, size_t* ret)
+ {
+ __set_errno(ENOSYS);
+ return -1;
+ }
# endif
#endif
@@ -1079,11 +1109,33 @@ _syscall3(int, chown, const char *, path, uid_t, owner, gid_t, group);
#endif
//#define __NR_getcwd 183
-// See unistd/getcwd.c -- we don't use the syscall, even when it is available...
+// See unistd/getcwd.c -- we don't use this syscall, even when it is available...
//#define __NR_capget 184
+#ifdef L_capget
+# ifdef __NR_capget
+ _syscall2(int, capget, void*, header, void*, data);
+# else
+ int capget(void* header, void* data)
+ {
+ __set_errno(ENOSYS);
+ return -1;
+ }
+# endif
+#endif
//#define __NR_capset 185
+#ifdef L_capset
+# ifdef __NR_capset
+ _syscall2(int, capset, void*, header, const void*, data);
+# else
+ int capset(void* header, const void* data)
+ {
+ __set_errno(ENOSYS);
+ return -1;
+ }
+# endif
+#endif
//#define __NR_sigaltstack 186