Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 252 insertions, 0 deletions

diff --git a/arch/i386/kernel/sys_i386.c b/arch/i386/kernel/sys_i386.c
new file mode 100644
index 000000000000..a4a61976ecb9
--- /dev/null
+++ b/arch/i386/kernel/sys_i386.c
@@ -0,0 +1,252 @@
+/*
+ * 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/syscalls.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 __user * 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(&current->mm->mmap_sem);
+        error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
+        up_write(&current->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 __user *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;
+}
+
+
+struct sel_arg_struct {
+        unsigned long n;
+        fd_set __user *inp, *outp, *exp;
+        struct timeval __user *tvp;
+};
+
+asmlinkage int old_select(struct sel_arg_struct __user *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 __user *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 __user *)ptr, second, NULL);
+        case SEMTIMEDOP:
+                return sys_semtimedop(first, (struct sembuf __user *)ptr, second,
+                                        (const struct timespec __user *)fifth);
+
+        case SEMGET:
+                return sys_semget (first, second, third);
+        case SEMCTL: {
+                union semun fourth;
+                if (!ptr)
+                        return -EINVAL;
+                if (get_user(fourth.__pad, (void __user * __user *) ptr))
+                        return -EFAULT;
+                return sys_semctl (first, second, third, fourth);
+        }
+
+        case MSGSND:
+                return sys_msgsnd (first, (struct msgbuf __user *) 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 __user *) ptr, 
+                                           sizeof (tmp)))
+                                return -EFAULT;
+                        return sys_msgrcv (first, tmp.msgp, second,
+                                           tmp.msgtyp, third);
+                }
+                default:
+                        return sys_msgrcv (first,
+                                           (struct msgbuf __user *) ptr,
+                                           second, fifth, third);
+                }
+        case MSGGET:
+                return sys_msgget ((key_t) first, second);
+        case MSGCTL:
+                return sys_msgctl (first, second, (struct msqid_ds __user *) ptr);
+
+        case SHMAT:
+                switch (version) {
+                default: {
+                        ulong raddr;
+                        ret = do_shmat (first, (char __user *) ptr, second, &raddr);
+                        if (ret)
+                                return ret;
+                        return put_user (raddr, (ulong __user *) third);
+                }
+                case 1: /* iBCS2 emulator entry point */
+                        if (!segment_eq(get_fs(), get_ds()))
+                                return -EINVAL;
+                        /* The "(ulong *) third" is valid _only_ because of the kernel segment thing */
+                        return do_shmat (first, (char __user *) ptr, second, (ulong *) third);
+                }
+        case SHMDT: 
+                return sys_shmdt ((char __user *)ptr);
+        case SHMGET:
+                return sys_shmget (first, second, third);
+        case SHMCTL:
+                return sys_shmctl (first, second,
+                                   (struct shmid_ds __user *) ptr);
+        default:
+                return -ENOSYS;
+        }
+}
+
+/*
+ * Old cruft
+ */
+asmlinkage int sys_uname(struct old_utsname __user * 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 __user * 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;
+}