diff options
Diffstat (limited to 'xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/sys_i386.c')
| -rw-r--r-- | xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/sys_i386.c | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/sys_i386.c b/xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/sys_i386.c deleted file mode 100644 index 5fd6910b9c..0000000000 --- a/xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/sys_i386.c +++ /dev/null @@ -1,256 +0,0 @@ -/* - * linux/arch/i386/kernel/sys_i386.c - * - * This file contains various random system calls that - * have a non-standard calling sequence on the Linux/i386 - * platform. - */ - -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/smp_lock.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/mman.h> -#include <linux/file.h> -#include <linux/utsname.h> - -#include <asm/uaccess.h> -#include <asm/ipc.h> - -/* - * sys_pipe() is the normal C calling standard for creating - * a pipe. It's not the way Unix traditionally does this, though. - */ -asmlinkage int sys_pipe(unsigned long * fildes) -{ - int fd[2]; - int error; - - error = do_pipe(fd); - if (!error) { - if (copy_to_user(fildes, fd, 2*sizeof(int))) - error = -EFAULT; - } - return error; -} - -/* common code for old and new mmaps */ -static inline long do_mmap2( - unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - int error = -EBADF; - struct file * file = NULL; - - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - if (!(flags & MAP_ANONYMOUS)) { - file = fget(fd); - if (!file) - goto out; - } - - down_write(¤t->mm->mmap_sem); - error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); - up_write(¤t->mm->mmap_sem); - - if (file) - fput(file); -out: - return error; -} - -asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - return do_mmap2(addr, len, prot, flags, fd, pgoff); -} - -/* - * Perform the select(nd, in, out, ex, tv) and mmap() system - * calls. Linux/i386 didn't use to be able to handle more than - * 4 system call parameters, so these system calls used a memory - * block for parameter passing.. - */ - -struct mmap_arg_struct { - unsigned long addr; - unsigned long len; - unsigned long prot; - unsigned long flags; - unsigned long fd; - unsigned long offset; -}; - -asmlinkage int old_mmap(struct mmap_arg_struct *arg) -{ - struct mmap_arg_struct a; - int err = -EFAULT; - - if (copy_from_user(&a, arg, sizeof(a))) - goto out; - - err = -EINVAL; - if (a.offset & ~PAGE_MASK) - goto out; - - err = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); -out: - return err; -} - - -extern asmlinkage int sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); - -struct sel_arg_struct { - unsigned long n; - fd_set *inp, *outp, *exp; - struct timeval *tvp; -}; - -asmlinkage int old_select(struct sel_arg_struct *arg) -{ - struct sel_arg_struct a; - - if (copy_from_user(&a, arg, sizeof(a))) - return -EFAULT; - /* sys_select() does the appropriate kernel locking */ - return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp); -} - -/* - * sys_ipc() is the de-multiplexer for the SysV IPC calls.. - * - * This is really horribly ugly. - */ -asmlinkage int sys_ipc (uint call, int first, int second, - int third, void *ptr, long fifth) -{ - int version, ret; - - version = call >> 16; /* hack for backward compatibility */ - call &= 0xffff; - - switch (call) { - case SEMOP: - return sys_semop (first, (struct sembuf *)ptr, second); - case SEMGET: - return sys_semget (first, second, third); - case SEMCTL: { - union semun fourth; - if (!ptr) - return -EINVAL; - if (get_user(fourth.__pad, (void **) ptr)) - return -EFAULT; - return sys_semctl (first, second, third, fourth); - } - - case MSGSND: - return sys_msgsnd (first, (struct msgbuf *) ptr, - second, third); - case MSGRCV: - switch (version) { - case 0: { - struct ipc_kludge tmp; - if (!ptr) - return -EINVAL; - - if (copy_from_user(&tmp, - (struct ipc_kludge *) ptr, - sizeof (tmp))) - return -EFAULT; - return sys_msgrcv (first, tmp.msgp, second, - tmp.msgtyp, third); - } - default: - return sys_msgrcv (first, - (struct msgbuf *) ptr, - second, fifth, third); - } - case MSGGET: - return sys_msgget ((key_t) first, second); - case MSGCTL: - return sys_msgctl (first, second, (struct msqid_ds *) ptr); - - case SHMAT: - switch (version) { - default: { - ulong raddr; - ret = sys_shmat (first, (char *) ptr, second, &raddr); - if (ret) - return ret; - return put_user (raddr, (ulong *) third); - } - case 1: /* iBCS2 emulator entry point */ - if (!segment_eq(get_fs(), get_ds())) - return -EINVAL; - return sys_shmat (first, (char *) ptr, second, (ulong *) third); - } - case SHMDT: - return sys_shmdt ((char *)ptr); - case SHMGET: - return sys_shmget (first, second, third); - case SHMCTL: - return sys_shmctl (first, second, - (struct shmid_ds *) ptr); - default: - return -EINVAL; - } -} - -/* - * Old cruft - */ -asmlinkage int sys_uname(struct old_utsname * name) -{ - int err; - if (!name) - return -EFAULT; - down_read(&uts_sem); - err=copy_to_user(name, &system_utsname, sizeof (*name)); - up_read(&uts_sem); - return err?-EFAULT:0; -} - -asmlinkage int sys_olduname(struct oldold_utsname * name) -{ - int error; - - if (!name) - return -EFAULT; - if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname))) - return -EFAULT; - - down_read(&uts_sem); - - error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN); - error |= __put_user(0,name->sysname+__OLD_UTS_LEN); - error |= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN); - error |= __put_user(0,name->nodename+__OLD_UTS_LEN); - error |= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN); - error |= __put_user(0,name->release+__OLD_UTS_LEN); - error |= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN); - error |= __put_user(0,name->version+__OLD_UTS_LEN); - error |= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN); - error |= __put_user(0,name->machine+__OLD_UTS_LEN); - - up_read(&uts_sem); - - error = error ? -EFAULT : 0; - - return error; -} - -asmlinkage int sys_pause(void) -{ - current->state = TASK_INTERRUPTIBLE; - schedule(); - return -ERESTARTNOHAND; -} - |