1 files changed, 199 insertions, 0 deletions

diff --git a/arch/parisc/hpux/fs.c b/arch/parisc/hpux/fs.c
new file mode 100644
index 000000000000..d7c80edf4489
--- /dev/null
+++ b/arch/parisc/hpux/fs.c
@@ -0,0 +1,199 @@
+/*
+ *    Implements HPUX syscalls.
+ *
+ *    Copyright (C) 1999 Matthew Wilcox <willy with parisc-linux.org>
+ *    Copyright (C) 2000 Michael Ang <mang with subcarrier.org>
+ *    Copyright (C) 2000 John Marvin <jsm with parisc-linux.org>
+ *    Copyright (C) 2000 Philipp Rumpf
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/smp_lock.h>
+#include <linux/slab.h>
+#include <linux/ptrace.h>
+#include <asm/errno.h>
+#include <asm/uaccess.h>
+
+int hpux_execve(struct pt_regs *regs)
+{
+        int error;
+        char *filename;
+
+        filename = getname((char *) regs->gr[26]);
+        error = PTR_ERR(filename);
+        if (IS_ERR(filename))
+                goto out;
+
+        error = do_execve(filename, (char **) regs->gr[25],
+                (char **)regs->gr[24], regs);
+
+        if (error == 0) {
+                task_lock(current);
+                current->ptrace &= ~PT_DTRACE;
+                task_unlock(current);
+        }
+        putname(filename);
+
+out:
+        return error;
+}
+
+struct hpux_dirent {
+        loff_t  d_off;
+        ino_t   d_ino;
+        short   d_reclen;
+        short   d_namlen;
+        char    d_name[1];
+};
+
+struct getdents_callback {
+        struct hpux_dirent *current_dir;
+        struct hpux_dirent *previous;
+        int count;
+        int error;
+};
+
+#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
+#define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1))
+
+static int filldir(void * __buf, const char * name, int namlen, loff_t offset,
+                ino_t ino, unsigned d_type)
+{
+        struct hpux_dirent * dirent;
+        struct getdents_callback * buf = (struct getdents_callback *) __buf;
+        int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1);
+
+        buf->error = -EINVAL;   /* only used if we fail.. */
+        if (reclen > buf->count)
+                return -EINVAL;
+        dirent = buf->previous;
+        if (dirent)
+                put_user(offset, &dirent->d_off);
+        dirent = buf->current_dir;
+        buf->previous = dirent;
+        put_user(ino, &dirent->d_ino);
+        put_user(reclen, &dirent->d_reclen);
+        put_user(namlen, &dirent->d_namlen);
+        copy_to_user(dirent->d_name, name, namlen);
+        put_user(0, dirent->d_name + namlen);
+        ((char *) dirent) += reclen;
+        buf->current_dir = dirent;
+        buf->count -= reclen;
+        return 0;
+}
+
+#undef NAME_OFFSET
+#undef ROUND_UP
+
+int hpux_getdents(unsigned int fd, struct hpux_dirent *dirent, unsigned int count)
+{
+        struct file * file;
+        struct hpux_dirent * lastdirent;
+        struct getdents_callback buf;
+        int error = -EBADF;
+
+        file = fget(fd);
+        if (!file)
+                goto out;
+
+        buf.current_dir = dirent;
+        buf.previous = NULL;
+        buf.count = count;
+        buf.error = 0;
+
+        error = vfs_readdir(file, filldir, &buf);
+        if (error < 0)
+                goto out_putf;
+        error = buf.error;
+        lastdirent = buf.previous;
+        if (lastdirent) {
+                put_user(file->f_pos, &lastdirent->d_off);
+                error = count - buf.count;
+        }
+
+out_putf:
+        fput(file);
+out:
+        return error;
+}
+
+int hpux_mount(const char *fs, const char *path, int mflag,
+                const char *fstype, const char *dataptr, int datalen)
+{
+        return -ENOSYS;
+}
+
+static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 *statbuf)
+{
+        struct hpux_stat64 tmp;
+
+        /* we probably want a different split here - is hpux 12:20? */
+
+        if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
+                return -EOVERFLOW;
+
+        memset(&tmp, 0, sizeof(tmp));
+        tmp.st_dev = new_encode_dev(stat->dev);
+        tmp.st_ino = stat->ino;
+        tmp.st_mode = stat->mode;
+        tmp.st_nlink = stat->nlink;
+        tmp.st_uid = stat->uid;
+        tmp.st_gid = stat->gid;
+        tmp.st_rdev = new_encode_dev(stat->rdev);
+        tmp.st_size = stat->size;
+        tmp.st_atime = stat->atime.tv_sec;
+        tmp.st_mtime = stat->mtime.tv_sec;
+        tmp.st_ctime = stat->ctime.tv_sec;
+        tmp.st_blocks = stat->blocks;
+        tmp.st_blksize = stat->blksize;
+        return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
+}
+
+long hpux_stat64(char *filename, struct hpux_stat64 *statbuf)
+{
+        struct kstat stat;
+        int error = vfs_stat(filename, &stat);
+
+        if (!error)
+                error = cp_hpux_stat(&stat, statbuf);
+
+        return error;
+}
+
+long hpux_fstat64(unsigned int fd, struct hpux_stat64 *statbuf)
+{
+        struct kstat stat;
+        int error = vfs_fstat(fd, &stat);
+
+        if (!error)
+                error = cp_hpux_stat(&stat, statbuf);
+
+        return error;
+}
+
+long hpux_lstat64(char *filename, struct hpux_stat64 *statbuf)
+{
+        struct kstat stat;
+        int error = vfs_lstat(filename, &stat);
+
+        if (!error)
+                error = cp_hpux_stat(&stat, statbuf);
+
+        return error;
+}