diff options
Diffstat (limited to 'fs/compat.c')
| -rw-r--r-- | fs/compat.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/fs/compat.c b/fs/compat.c deleted file mode 100644 index 190b38b39d9e..000000000000 --- a/fs/compat.c +++ /dev/null @@ -1,205 +0,0 @@ -/* - * linux/fs/compat.c - * - * Kernel compatibililty routines for e.g. 32 bit syscall support - * on 64 bit kernels. - * - * Copyright (C) 2002 Stephen Rothwell, IBM Corporation - * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com) - * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) - * Copyright (C) 2001,2002 Andi Kleen, SuSE Labs - * Copyright (C) 2003 Pavel Machek (pavel@ucw.cz) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/compat.h> -#include <linux/ncp_mount.h> -#include <linux/nfs4_mount.h> -#include <linux/syscalls.h> -#include <linux/slab.h> -#include <linux/uaccess.h> -#include "internal.h" - -struct compat_ncp_mount_data { - compat_int_t version; - compat_uint_t ncp_fd; - __compat_uid_t mounted_uid; - compat_pid_t wdog_pid; - unsigned char mounted_vol[NCP_VOLNAME_LEN + 1]; - compat_uint_t time_out; - compat_uint_t retry_count; - compat_uint_t flags; - __compat_uid_t uid; - __compat_gid_t gid; - compat_mode_t file_mode; - compat_mode_t dir_mode; -}; - -struct compat_ncp_mount_data_v4 { - compat_int_t version; - compat_ulong_t flags; - compat_ulong_t mounted_uid; - compat_long_t wdog_pid; - compat_uint_t ncp_fd; - compat_uint_t time_out; - compat_uint_t retry_count; - compat_ulong_t uid; - compat_ulong_t gid; - compat_ulong_t file_mode; - compat_ulong_t dir_mode; -}; - -static void *do_ncp_super_data_conv(void *raw_data) -{ - int version = *(unsigned int *)raw_data; - - if (version == 3) { - struct compat_ncp_mount_data *c_n = raw_data; - struct ncp_mount_data *n = raw_data; - - n->dir_mode = c_n->dir_mode; - n->file_mode = c_n->file_mode; - n->gid = c_n->gid; - n->uid = c_n->uid; - memmove (n->mounted_vol, c_n->mounted_vol, (sizeof (c_n->mounted_vol) + 3 * sizeof (unsigned int))); - n->wdog_pid = c_n->wdog_pid; - n->mounted_uid = c_n->mounted_uid; - } else if (version == 4) { - struct compat_ncp_mount_data_v4 *c_n = raw_data; - struct ncp_mount_data_v4 *n = raw_data; - - n->dir_mode = c_n->dir_mode; - n->file_mode = c_n->file_mode; - n->gid = c_n->gid; - n->uid = c_n->uid; - n->retry_count = c_n->retry_count; - n->time_out = c_n->time_out; - n->ncp_fd = c_n->ncp_fd; - n->wdog_pid = c_n->wdog_pid; - n->mounted_uid = c_n->mounted_uid; - n->flags = c_n->flags; - } else if (version != 5) { - return NULL; - } - - return raw_data; -} - - -struct compat_nfs_string { - compat_uint_t len; - compat_uptr_t data; -}; - -static inline void compat_nfs_string(struct nfs_string *dst, - struct compat_nfs_string *src) -{ - dst->data = compat_ptr(src->data); - dst->len = src->len; -} - -struct compat_nfs4_mount_data_v1 { - compat_int_t version; - compat_int_t flags; - compat_int_t rsize; - compat_int_t wsize; - compat_int_t timeo; - compat_int_t retrans; - compat_int_t acregmin; - compat_int_t acregmax; - compat_int_t acdirmin; - compat_int_t acdirmax; - struct compat_nfs_string client_addr; - struct compat_nfs_string mnt_path; - struct compat_nfs_string hostname; - compat_uint_t host_addrlen; - compat_uptr_t host_addr; - compat_int_t proto; - compat_int_t auth_flavourlen; - compat_uptr_t auth_flavours; -}; - -static int do_nfs4_super_data_conv(void *raw_data) -{ - int version = *(compat_uint_t *) raw_data; - - if (version == 1) { - struct compat_nfs4_mount_data_v1 *raw = raw_data; - struct nfs4_mount_data *real = raw_data; - - /* copy the fields backwards */ - real->auth_flavours = compat_ptr(raw->auth_flavours); - real->auth_flavourlen = raw->auth_flavourlen; - real->proto = raw->proto; - real->host_addr = compat_ptr(raw->host_addr); - real->host_addrlen = raw->host_addrlen; - compat_nfs_string(&real->hostname, &raw->hostname); - compat_nfs_string(&real->mnt_path, &raw->mnt_path); - compat_nfs_string(&real->client_addr, &raw->client_addr); - real->acdirmax = raw->acdirmax; - real->acdirmin = raw->acdirmin; - real->acregmax = raw->acregmax; - real->acregmin = raw->acregmin; - real->retrans = raw->retrans; - real->timeo = raw->timeo; - real->wsize = raw->wsize; - real->rsize = raw->rsize; - real->flags = raw->flags; - real->version = raw->version; - } - - return 0; -} - -#define NCPFS_NAME "ncpfs" -#define NFS4_NAME "nfs4" - -COMPAT_SYSCALL_DEFINE5(mount, const char __user *, dev_name, - const char __user *, dir_name, - const char __user *, type, compat_ulong_t, flags, - const void __user *, data) -{ - char *kernel_type; - void *options; - char *kernel_dev; - int retval; - - kernel_type = copy_mount_string(type); - retval = PTR_ERR(kernel_type); - if (IS_ERR(kernel_type)) - goto out; - - kernel_dev = copy_mount_string(dev_name); - retval = PTR_ERR(kernel_dev); - if (IS_ERR(kernel_dev)) - goto out1; - - options = copy_mount_options(data); - retval = PTR_ERR(options); - if (IS_ERR(options)) - goto out2; - - if (kernel_type && options) { - if (!strcmp(kernel_type, NCPFS_NAME)) { - do_ncp_super_data_conv(options); - } else if (!strcmp(kernel_type, NFS4_NAME)) { - retval = -EINVAL; - if (do_nfs4_super_data_conv(options)) - goto out3; - } - } - - retval = do_mount(kernel_dev, dir_name, kernel_type, flags, options); - - out3: - kfree(options); - out2: - kfree(kernel_dev); - out1: - kfree(kernel_type); - out: - return retval; -} |