329 lines
8.6 KiB
C
329 lines
8.6 KiB
C
/*
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* Copyright (c) 2014,2017 The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/compat.h>
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#include <linux/fs.h>
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#include <linux/uaccess.h>
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#include <linux/msm_ion.h>
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#include "adsprpc_compat.h"
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#include "adsprpc_shared.h"
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#define COMPAT_FASTRPC_IOCTL_INVOKE \
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_IOWR('R', 1, struct compat_fastrpc_ioctl_invoke)
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#define COMPAT_FASTRPC_IOCTL_MMAP \
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_IOWR('R', 2, struct compat_fastrpc_ioctl_mmap)
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#define COMPAT_FASTRPC_IOCTL_MUNMAP \
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_IOWR('R', 3, struct compat_fastrpc_ioctl_munmap)
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#define COMPAT_FASTRPC_IOCTL_INVOKE_FD \
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_IOWR('R', 4, struct compat_fastrpc_ioctl_invoke_fd)
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#define COMPAT_FASTRPC_IOCTL_INIT \
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_IOWR('R', 6, struct compat_fastrpc_ioctl_init)
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struct compat_remote_buf {
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compat_uptr_t pv; /* buffer pointer */
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compat_size_t len; /* length of buffer */
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};
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union compat_remote_arg {
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struct compat_remote_buf buf;
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compat_uint_t h;
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};
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struct compat_fastrpc_ioctl_invoke {
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compat_uint_t handle; /* remote handle */
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compat_uint_t sc; /* scalars describing the data */
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compat_uptr_t pra; /* remote arguments list */
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};
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struct compat_fastrpc_ioctl_invoke_fd {
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struct compat_fastrpc_ioctl_invoke inv;
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compat_uptr_t fds; /* fd list */
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};
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struct compat_fastrpc_ioctl_mmap {
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compat_int_t fd; /* ion fd */
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compat_uint_t flags; /* flags for dsp to map with */
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compat_uptr_t vaddrin; /* optional virtual address */
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compat_size_t size; /* size */
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compat_uptr_t vaddrout; /* dsps virtual address */
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};
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struct compat_fastrpc_ioctl_munmap {
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compat_uptr_t vaddrout; /* address to unmap */
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compat_size_t size; /* size */
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};
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struct compat_fastrpc_ioctl_init {
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compat_uint_t flags; /* one of FASTRPC_INIT_* macros */
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compat_uptr_t file; /* pointer to elf file */
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compat_int_t filelen; /* elf file length */
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compat_int_t filefd; /* ION fd for the file */
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compat_uptr_t mem; /* mem for the PD */
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compat_int_t memlen; /* mem length */
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compat_int_t memfd; /* ION fd for the mem */
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};
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static int compat_get_fastrpc_ioctl_invoke(
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struct compat_fastrpc_ioctl_invoke_fd __user *inv32,
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struct fastrpc_ioctl_invoke_fd __user **inva,
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unsigned int cmd)
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{
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compat_uint_t u, sc;
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compat_size_t s;
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compat_uptr_t p;
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struct fastrpc_ioctl_invoke_fd *inv;
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union compat_remote_arg *pra32;
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union remote_arg *pra;
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int err, len, num, j;
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err = get_user(sc, &inv32->inv.sc);
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if (err)
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return err;
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len = REMOTE_SCALARS_LENGTH(sc);
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VERIFY(err, NULL != (inv = compat_alloc_user_space(
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sizeof(*inv) + len * sizeof(*pra))));
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if (err)
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return -EFAULT;
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pra = (union remote_arg *)(inv + 1);
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err = put_user(pra, &inv->inv.pra);
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err |= put_user(sc, &inv->inv.sc);
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err |= get_user(u, &inv32->inv.handle);
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err |= put_user(u, &inv->inv.handle);
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err |= get_user(p, &inv32->inv.pra);
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if (err)
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return err;
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pra32 = compat_ptr(p);
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pra = (union remote_arg *)(inv + 1);
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num = REMOTE_SCALARS_INBUFS(sc) + REMOTE_SCALARS_OUTBUFS(sc);
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for (j = 0; j < num; j++) {
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err |= get_user(p, &pra32[j].buf.pv);
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err |= put_user(p, (uintptr_t *)&pra[j].buf.pv);
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err |= get_user(s, &pra32[j].buf.len);
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err |= put_user(s, &pra[j].buf.len);
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}
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for (j = 0; j < REMOTE_SCALARS_INHANDLES(sc); j++) {
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err |= get_user(u, &pra32[num + j].h);
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err |= put_user(u, &pra[num + j].h);
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}
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err |= put_user(NULL, &inv->fds);
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if (cmd == COMPAT_FASTRPC_IOCTL_INVOKE_FD) {
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err |= get_user(p, &inv32->fds);
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err |= put_user(p, (compat_uptr_t *)&inv->fds);
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}
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*inva = inv;
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return err;
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}
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static int compat_put_fastrpc_ioctl_invoke(
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struct compat_fastrpc_ioctl_invoke_fd __user *inv32,
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struct fastrpc_ioctl_invoke_fd __user *inv)
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{
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compat_uptr_t p;
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compat_uint_t u, h;
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union compat_remote_arg *pra32;
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union remote_arg *pra;
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int err, i, num;
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err = get_user(u, &inv32->inv.sc);
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err |= get_user(p, &inv32->inv.pra);
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if (err)
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return err;
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pra32 = compat_ptr(p);
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pra = (union remote_arg *)(inv + 1);
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num = REMOTE_SCALARS_INBUFS(u) + REMOTE_SCALARS_OUTBUFS(u)
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+ REMOTE_SCALARS_INHANDLES(u);
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for (i = 0; i < REMOTE_SCALARS_OUTHANDLES(u); i++) {
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err |= get_user(h, &pra[num + i].h);
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err |= put_user(h, &pra32[num + i].h);
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}
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return err;
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}
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static int compat_get_fastrpc_ioctl_mmap(
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struct compat_fastrpc_ioctl_mmap __user *map32,
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struct fastrpc_ioctl_mmap __user *map)
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{
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compat_uint_t u;
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compat_int_t i;
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compat_size_t s;
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compat_uptr_t p;
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int err;
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err = get_user(i, &map32->fd);
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err |= put_user(i, &map->fd);
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err |= get_user(u, &map32->flags);
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err |= put_user(u, &map->flags);
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err |= get_user(p, &map32->vaddrin);
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err |= put_user(p, (uintptr_t *)&map->vaddrin);
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err |= get_user(s, &map32->size);
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err |= put_user(s, &map->size);
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return err;
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}
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static int compat_put_fastrpc_ioctl_mmap(
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struct compat_fastrpc_ioctl_mmap __user *map32,
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struct fastrpc_ioctl_mmap __user *map)
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{
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compat_uptr_t p;
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int err;
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err = get_user(p, &map->vaddrout);
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err |= put_user(p, &map32->vaddrout);
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return err;
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}
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static int compat_get_fastrpc_ioctl_munmap(
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struct compat_fastrpc_ioctl_munmap __user *unmap32,
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struct fastrpc_ioctl_munmap __user *unmap)
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{
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compat_uptr_t p;
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compat_size_t s;
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int err;
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err = get_user(p, &unmap32->vaddrout);
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err |= put_user(p, &unmap->vaddrout);
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err |= get_user(s, &unmap32->size);
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err |= put_user(s, &unmap->size);
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return err;
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}
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static int compat_get_fastrpc_ioctl_init(
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struct compat_fastrpc_ioctl_init __user *init32,
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struct fastrpc_ioctl_init __user *init)
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{
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compat_uint_t u;
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compat_uptr_t p;
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compat_int_t i;
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int err;
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err = get_user(u, &init32->flags);
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err |= put_user(u, &init->flags);
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err |= get_user(p, &init32->file);
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err |= put_user(p, &init->file);
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err |= get_user(i, &init32->filelen);
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err |= put_user(i, &init->filelen);
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err |= get_user(i, &init32->filefd);
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err |= put_user(i, &init->filefd);
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err |= get_user(p, &init32->mem);
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err |= put_user(p, &init->mem);
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err |= get_user(i, &init32->memlen);
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err |= put_user(i, &init->memlen);
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err |= get_user(i, &init32->memfd);
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err |= put_user(i, &init->memfd);
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return err;
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}
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long compat_fastrpc_device_ioctl(struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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int err = 0;
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if (!filp->f_op || !filp->f_op->unlocked_ioctl)
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return -ENOTTY;
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switch (cmd) {
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case COMPAT_FASTRPC_IOCTL_INVOKE:
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case COMPAT_FASTRPC_IOCTL_INVOKE_FD:
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{
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struct compat_fastrpc_ioctl_invoke_fd __user *inv32;
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struct fastrpc_ioctl_invoke_fd __user *inv;
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long ret;
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inv32 = compat_ptr(arg);
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VERIFY(err, 0 == compat_get_fastrpc_ioctl_invoke(inv32,
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&inv, cmd));
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if (err)
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return err;
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ret = filp->f_op->unlocked_ioctl(filp, FASTRPC_IOCTL_INVOKE_FD,
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(unsigned long)inv);
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if (ret)
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return ret;
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VERIFY(err, 0 == compat_put_fastrpc_ioctl_invoke(inv32, inv));
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return err;
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}
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case COMPAT_FASTRPC_IOCTL_MMAP:
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{
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struct compat_fastrpc_ioctl_mmap __user *map32;
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struct fastrpc_ioctl_mmap __user *map;
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long ret;
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map32 = compat_ptr(arg);
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VERIFY(err, NULL != (map = compat_alloc_user_space(
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sizeof(*map))));
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if (err)
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return -EFAULT;
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VERIFY(err, 0 == compat_get_fastrpc_ioctl_mmap(map32, map));
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if (err)
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return err;
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ret = filp->f_op->unlocked_ioctl(filp, FASTRPC_IOCTL_MMAP,
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(unsigned long)map);
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if (ret)
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return ret;
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VERIFY(err, 0 == compat_put_fastrpc_ioctl_mmap(map32, map));
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return err;
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}
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case COMPAT_FASTRPC_IOCTL_MUNMAP:
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{
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struct compat_fastrpc_ioctl_munmap __user *unmap32;
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struct fastrpc_ioctl_munmap __user *unmap;
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unmap32 = compat_ptr(arg);
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VERIFY(err, NULL != (unmap = compat_alloc_user_space(
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sizeof(*unmap))));
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if (err)
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return -EFAULT;
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VERIFY(err, 0 == compat_get_fastrpc_ioctl_munmap(unmap32,
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unmap));
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if (err)
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return err;
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return filp->f_op->unlocked_ioctl(filp, FASTRPC_IOCTL_MUNMAP,
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(unsigned long)unmap);
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}
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case COMPAT_FASTRPC_IOCTL_INIT:
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{
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struct compat_fastrpc_ioctl_init __user *init32;
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struct fastrpc_ioctl_init __user *init;
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init32 = compat_ptr(arg);
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VERIFY(err, NULL != (init = compat_alloc_user_space(
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sizeof(*init))));
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if (err)
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return -EFAULT;
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VERIFY(err, 0 == compat_get_fastrpc_ioctl_init(init32,
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init));
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if (err)
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return err;
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return filp->f_op->unlocked_ioctl(filp, FASTRPC_IOCTL_INIT,
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(unsigned long)init);
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}
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case FASTRPC_IOCTL_SETMODE:
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return filp->f_op->unlocked_ioctl(filp, cmd,
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(unsigned long)compat_ptr(arg));
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default:
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return -ENOIOCTLCMD;
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}
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}
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