summaryrefslogtreecommitdiffstats
path: root/arch/parisc/hpux/fs.c
diff options
context:
space:
mode:
authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/parisc/hpux/fs.c
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
downloadkernel-uprobes-b4b6116a13633898cf868f2f103c96a90c4c20f8.tar.gz
kernel-uprobes-b4b6116a13633898cf868f2f103c96a90c4c20f8.tar.xz
kernel-uprobes-b4b6116a13633898cf868f2f103c96a90c4c20f8.zip
fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/parisc/hpux/fs.c')
-rw-r--r--arch/parisc/hpux/fs.c206
1 files changed, 206 insertions, 0 deletions
diff --git a/arch/parisc/hpux/fs.c b/arch/parisc/hpux/fs.c
new file mode 100644
index 00000000000..0dc8543acb4
--- /dev/null
+++ b/arch/parisc/hpux/fs.c
@@ -0,0 +1,206 @@
+/*
+ * 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/kernel.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <asm/errno.h>
+#include <asm/uaccess.h>
+
+int hpux_execve(struct pt_regs *regs)
+{
+ int error;
+ char *filename;
+
+ filename = getname((const char __user *) regs->gr[26]);
+ error = PTR_ERR(filename);
+ if (IS_ERR(filename))
+ goto out;
+
+ error = do_execve(filename,
+ (const char __user *const __user *) regs->gr[25],
+ (const char __user *const __user *) regs->gr[24],
+ regs);
+
+ 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 __user *current_dir;
+ struct hpux_dirent __user *previous;
+ int count;
+ int error;
+};
+
+#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
+
+static int filldir(void * __buf, const char * name, int namlen, loff_t offset,
+ u64 ino, unsigned d_type)
+{
+ struct hpux_dirent __user * dirent;
+ struct getdents_callback * buf = (struct getdents_callback *) __buf;
+ ino_t d_ino;
+ int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 1, sizeof(long));
+
+ buf->error = -EINVAL; /* only used if we fail.. */
+ if (reclen > buf->count)
+ return -EINVAL;
+ d_ino = ino;
+ if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
+ buf->error = -EOVERFLOW;
+ return -EOVERFLOW;
+ }
+ dirent = buf->previous;
+ if (dirent)
+ if (put_user(offset, &dirent->d_off))
+ goto Efault;
+ dirent = buf->current_dir;
+ if (put_user(d_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))
+ goto Efault;
+ buf->previous = dirent;
+ buf->current_dir = (void __user *)dirent + reclen;
+ buf->count -= reclen;
+ return 0;
+Efault:
+ buf->error = -EFAULT;
+ return -EFAULT;
+}
+
+#undef NAME_OFFSET
+
+int hpux_getdents(unsigned int fd, struct hpux_dirent __user *dirent, unsigned int count)
+{
+ struct file * file;
+ struct hpux_dirent __user * 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)
+ error = buf.error;
+ lastdirent = buf.previous;
+ if (lastdirent) {
+ if (put_user(file->f_pos, &lastdirent->d_off))
+ error = -EFAULT;
+ else
+ error = count - buf.count;
+ }
+
+ 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 __user *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(const char __user *filename, struct hpux_stat64 __user *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 __user *statbuf)
+{
+ struct kstat stat;
+ int error = vfs_fstat(fd, &stat);
+
+ if (!error)
+ error = cp_hpux_stat(&stat, statbuf);
+
+ return error;
+}
+
+long hpux_lstat64(const char __user *filename,
+ struct hpux_stat64 __user *statbuf)
+{
+ struct kstat stat;
+ int error = vfs_lstat(filename, &stat);
+
+ if (!error)
+ error = cp_hpux_stat(&stat, statbuf);
+
+ return error;
+}