/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
* Licensed under the GPL
*/
/* Unlocked, I don't care if this is a bit off */
int nsyscalls = 0;
-long um_mount(char * dev_name, char * dir_name, char * type,
- unsigned long new_flags, void * data)
+long um_mount(char __user * dev_name, char __user * dir_name,
+ char __user * type, unsigned long new_flags, void __user * data)
{
- if(type == NULL) type = "";
return(sys_mount(dev_name, dir_name, type, new_flags, data));
}
long sys_fork(void)
{
- struct task_struct *p;
+ long ret;
current->thread.forking = 1;
- p = do_fork(SIGCHLD, 0, NULL, 0, NULL, NULL);
+ ret = do_fork(SIGCHLD, 0, NULL, 0, NULL, NULL);
current->thread.forking = 0;
- return(IS_ERR(p) ? PTR_ERR(p) : p->pid);
-}
-
-long sys_clone(unsigned long clone_flags, unsigned long newsp)
-{
- struct task_struct *p;
-
- current->thread.forking = 1;
- p = do_fork(clone_flags, newsp, NULL, 0, NULL, NULL);
- current->thread.forking = 0;
- return(IS_ERR(p) ? PTR_ERR(p) : p->pid);
+ return(ret);
}
long sys_vfork(void)
{
- struct task_struct *p;
+ long ret;
current->thread.forking = 1;
- p = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, NULL, 0, NULL, NULL);
+ ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, NULL, 0, NULL,
+ NULL);
current->thread.forking = 0;
- return(IS_ERR(p) ? PTR_ERR(p) : p->pid);
+ return(ret);
}
/* 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)
+long sys_mmap2(unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff)
{
- int error = -EBADF;
+ long error = -EBADF;
struct file * file = NULL;
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
return error;
}
-long sys_mmap2(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff)
+long old_mmap(unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long offset)
{
- 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;
-};
-
-int old_mmap(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long offset)
-{
- int err = -EINVAL;
+ long err = -EINVAL;
if (offset & ~PAGE_MASK)
goto out;
- err = do_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
+ err = sys_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
out:
return err;
}
* sys_pipe() is the normal C calling standard for creating
* a pipe. It's not the way unix traditionally does this, though.
*/
-int sys_pipe(unsigned long * fildes)
+long sys_pipe(unsigned long __user * fildes)
{
int fd[2];
- int error;
+ long error;
error = do_pipe(fd);
if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
+ if (copy_to_user(fildes, fd, sizeof(fd)))
error = -EFAULT;
}
return error;
}
-int sys_sigaction(int sig, const struct old_sigaction *act,
- struct old_sigaction *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
- if (act) {
- old_sigset_t mask;
- if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
- __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
- __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
- return -EFAULT;
- __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- __get_user(mask, &act->sa_mask);
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
- __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
- return -EFAULT;
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
- }
-
- return ret;
-}
-
-/*
- * sys_ipc() is the de-multiplexer for the SysV IPC calls..
- *
- * This is really horribly ugly.
- */
-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_semtimedop(first, (struct sembuf *) ptr, second,
- NULL);
- case SEMTIMEDOP:
- return sys_semtimedop(first, (struct sembuf *) ptr, second,
- (const struct timespec *) fifth);
- 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:
- panic("msgrcv with version != 0");
- 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 = do_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 do_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;
- }
-}
-
-int sys_uname(struct old_utsname * name)
+long sys_uname(struct old_utsname * name)
{
- int err;
+ long err;
if (!name)
return -EFAULT;
down_read(&uts_sem);
return err?-EFAULT:0;
}
-int sys_olduname(struct oldold_utsname * name)
+long sys_olduname(struct oldold_utsname * name)
{
- int error;
+ long error;
struct new_utsname *ptr;
if (!name)
return error;
}
-int sys_sigaltstack(const stack_t *uss, stack_t *uoss)
-{
- return(do_sigaltstack(uss, uoss, PT_REGS_SP(¤t->thread.regs)));
-}
-
long execute_syscall(void *r)
{
return(CHOOSE_MODE_PROC(execute_syscall_tt, execute_syscall_skas, r));
}
-spinlock_t syscall_lock = SPIN_LOCK_UNLOCKED;
+DEFINE_SPINLOCK(syscall_lock);
static int syscall_index = 0;
git://git.onelab.eu / linux-2.6.git / blobdiff