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linux/arch/parisc/kernel/ioctl32.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-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!
2005-04-16 15:20:36 -07:00

626 lines
17 KiB
C
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/* $Id: ioctl32.c,v 1.5 2002/10/18 00:21:43 varenet Exp $
* ioctl32.c: Conversion between 32bit and 64bit native ioctls.
*
* Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com)
* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
*
* These routines maintain argument size conversion between 32bit and 64bit
* ioctls.
*/
#include <linux/syscalls.h>
#define INCLUDES
#include "compat_ioctl.c"
#include <asm/perf.h>
#include <asm/ioctls.h>
#define CODE
#include "compat_ioctl.c"
/* Use this to get at 32-bit user passed pointers.
See sys_sparc32.c for description about these. */
#define A(__x) ((unsigned long)(__x))
/* The same for use with copy_from_user() and copy_to_user(). */
#define B(__x) ((void *)(unsigned long)(__x))
#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE)
/* This really belongs in include/linux/drm.h -DaveM */
#include "../../../drivers/char/drm/drm.h"
typedef struct drm32_version {
int version_major; /* Major version */
int version_minor; /* Minor version */
int version_patchlevel;/* Patch level */
int name_len; /* Length of name buffer */
u32 name; /* Name of driver */
int date_len; /* Length of date buffer */
u32 date; /* User-space buffer to hold date */
int desc_len; /* Length of desc buffer */
u32 desc; /* User-space buffer to hold desc */
} drm32_version_t;
#define DRM32_IOCTL_VERSION DRM_IOWR(0x00, drm32_version_t)
static int drm32_version(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_version_t *uversion = (drm32_version_t *)arg;
char *name_ptr, *date_ptr, *desc_ptr;
u32 tmp1, tmp2, tmp3;
drm_version_t kversion;
mm_segment_t old_fs;
int ret;
memset(&kversion, 0, sizeof(kversion));
if (get_user(kversion.name_len, &uversion->name_len) ||
get_user(kversion.date_len, &uversion->date_len) ||
get_user(kversion.desc_len, &uversion->desc_len) ||
get_user(tmp1, &uversion->name) ||
get_user(tmp2, &uversion->date) ||
get_user(tmp3, &uversion->desc))
return -EFAULT;
name_ptr = (char *) A(tmp1);
date_ptr = (char *) A(tmp2);
desc_ptr = (char *) A(tmp3);
ret = -ENOMEM;
if (kversion.name_len && name_ptr) {
kversion.name = kmalloc(kversion.name_len, GFP_KERNEL);
if (!kversion.name)
goto out;
}
if (kversion.date_len && date_ptr) {
kversion.date = kmalloc(kversion.date_len, GFP_KERNEL);
if (!kversion.date)
goto out;
}
if (kversion.desc_len && desc_ptr) {
kversion.desc = kmalloc(kversion.desc_len, GFP_KERNEL);
if (!kversion.desc)
goto out;
}
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_ioctl (fd, DRM_IOCTL_VERSION, (unsigned long)&kversion);
set_fs(old_fs);
if (!ret) {
if ((kversion.name &&
copy_to_user(name_ptr, kversion.name, kversion.name_len)) ||
(kversion.date &&
copy_to_user(date_ptr, kversion.date, kversion.date_len)) ||
(kversion.desc &&
copy_to_user(desc_ptr, kversion.desc, kversion.desc_len)))
ret = -EFAULT;
if (put_user(kversion.version_major, &uversion->version_major) ||
put_user(kversion.version_minor, &uversion->version_minor) ||
put_user(kversion.version_patchlevel, &uversion->version_patchlevel) ||
put_user(kversion.name_len, &uversion->name_len) ||
put_user(kversion.date_len, &uversion->date_len) ||
put_user(kversion.desc_len, &uversion->desc_len))
ret = -EFAULT;
}
out:
if (kversion.name)
kfree(kversion.name);
if (kversion.date)
kfree(kversion.date);
if (kversion.desc)
kfree(kversion.desc);
return ret;
}
typedef struct drm32_unique {
int unique_len; /* Length of unique */
u32 unique; /* Unique name for driver instantiation */
} drm32_unique_t;
#define DRM32_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm32_unique_t)
#define DRM32_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm32_unique_t)
static int drm32_getsetunique(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_unique_t *uarg = (drm32_unique_t *)arg;
drm_unique_t karg;
mm_segment_t old_fs;
char *uptr;
u32 tmp;
int ret;
if (get_user(karg.unique_len, &uarg->unique_len))
return -EFAULT;
karg.unique = NULL;
if (get_user(tmp, &uarg->unique))
return -EFAULT;
uptr = (char *) A(tmp);
if (uptr) {
karg.unique = kmalloc(karg.unique_len, GFP_KERNEL);
if (!karg.unique)
return -ENOMEM;
if (cmd == DRM32_IOCTL_SET_UNIQUE &&
copy_from_user(karg.unique, uptr, karg.unique_len)) {
kfree(karg.unique);
return -EFAULT;
}
}
old_fs = get_fs();
set_fs(KERNEL_DS);
if (cmd == DRM32_IOCTL_GET_UNIQUE)
ret = sys_ioctl (fd, DRM_IOCTL_GET_UNIQUE, (unsigned long)&karg);
else
ret = sys_ioctl (fd, DRM_IOCTL_SET_UNIQUE, (unsigned long)&karg);
set_fs(old_fs);
if (!ret) {
if (cmd == DRM32_IOCTL_GET_UNIQUE &&
uptr != NULL &&
copy_to_user(uptr, karg.unique, karg.unique_len))
ret = -EFAULT;
if (put_user(karg.unique_len, &uarg->unique_len))
ret = -EFAULT;
}
if (karg.unique != NULL)
kfree(karg.unique);
return ret;
}
typedef struct drm32_map {
u32 offset; /* Requested physical address (0 for SAREA)*/
u32 size; /* Requested physical size (bytes) */
drm_map_type_t type; /* Type of memory to map */
drm_map_flags_t flags; /* Flags */
u32 handle; /* User-space: "Handle" to pass to mmap */
/* Kernel-space: kernel-virtual address */
int mtrr; /* MTRR slot used */
/* Private data */
} drm32_map_t;
#define DRM32_IOCTL_ADD_MAP DRM_IOWR(0x15, drm32_map_t)
static int drm32_addmap(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_map_t *uarg = (drm32_map_t *) arg;
drm_map_t karg;
mm_segment_t old_fs;
u32 tmp;
int ret;
ret = get_user(karg.offset, &uarg->offset);
ret |= get_user(karg.size, &uarg->size);
ret |= get_user(karg.type, &uarg->type);
ret |= get_user(karg.flags, &uarg->flags);
ret |= get_user(tmp, &uarg->handle);
ret |= get_user(karg.mtrr, &uarg->mtrr);
if (ret)
return -EFAULT;
karg.handle = (void *) A(tmp);
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, DRM_IOCTL_ADD_MAP, (unsigned long) &karg);
set_fs(old_fs);
if (!ret) {
ret = put_user(karg.offset, &uarg->offset);
ret |= put_user(karg.size, &uarg->size);
ret |= put_user(karg.type, &uarg->type);
ret |= put_user(karg.flags, &uarg->flags);
tmp = (u32) (long)karg.handle;
ret |= put_user(tmp, &uarg->handle);
ret |= put_user(karg.mtrr, &uarg->mtrr);
if (ret)
ret = -EFAULT;
}
return ret;
}
typedef struct drm32_buf_info {
int count; /* Entries in list */
u32 list; /* (drm_buf_desc_t *) */
} drm32_buf_info_t;
#define DRM32_IOCTL_INFO_BUFS DRM_IOWR(0x18, drm32_buf_info_t)
static int drm32_info_bufs(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_buf_info_t *uarg = (drm32_buf_info_t *)arg;
drm_buf_desc_t *ulist;
drm_buf_info_t karg;
mm_segment_t old_fs;
int orig_count, ret;
u32 tmp;
if (get_user(karg.count, &uarg->count) ||
get_user(tmp, &uarg->list))
return -EFAULT;
ulist = (drm_buf_desc_t *) A(tmp);
orig_count = karg.count;
karg.list = kmalloc(karg.count * sizeof(drm_buf_desc_t), GFP_KERNEL);
if (!karg.list)
return -EFAULT;
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, DRM_IOCTL_INFO_BUFS, (unsigned long) &karg);
set_fs(old_fs);
if (!ret) {
if (karg.count <= orig_count &&
(copy_to_user(ulist, karg.list,
karg.count * sizeof(drm_buf_desc_t))))
ret = -EFAULT;
if (put_user(karg.count, &uarg->count))
ret = -EFAULT;
}
kfree(karg.list);
return ret;
}
typedef struct drm32_buf_free {
int count;
u32 list; /* (int *) */
} drm32_buf_free_t;
#define DRM32_IOCTL_FREE_BUFS DRM_IOW( 0x1a, drm32_buf_free_t)
static int drm32_free_bufs(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_buf_free_t *uarg = (drm32_buf_free_t *)arg;
drm_buf_free_t karg;
mm_segment_t old_fs;
int *ulist;
int ret;
u32 tmp;
if (get_user(karg.count, &uarg->count) ||
get_user(tmp, &uarg->list))
return -EFAULT;
ulist = (int *) A(tmp);
karg.list = kmalloc(karg.count * sizeof(int), GFP_KERNEL);
if (!karg.list)
return -ENOMEM;
ret = -EFAULT;
if (copy_from_user(karg.list, ulist, (karg.count * sizeof(int))))
goto out;
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, DRM_IOCTL_FREE_BUFS, (unsigned long) &karg);
set_fs(old_fs);
out:
kfree(karg.list);
return ret;
}
typedef struct drm32_buf_pub {
int idx; /* Index into master buflist */
int total; /* Buffer size */
int used; /* Amount of buffer in use (for DMA) */
u32 address; /* Address of buffer (void *) */
} drm32_buf_pub_t;
typedef struct drm32_buf_map {
int count; /* Length of buflist */
u32 virtual; /* Mmaped area in user-virtual (void *) */
u32 list; /* Buffer information (drm_buf_pub_t *) */
} drm32_buf_map_t;
#define DRM32_IOCTL_MAP_BUFS DRM_IOWR(0x19, drm32_buf_map_t)
static int drm32_map_bufs(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_buf_map_t *uarg = (drm32_buf_map_t *)arg;
drm32_buf_pub_t *ulist;
drm_buf_map_t karg;
mm_segment_t old_fs;
int orig_count, ret, i;
u32 tmp1, tmp2;
if (get_user(karg.count, &uarg->count) ||
get_user(tmp1, &uarg->virtual) ||
get_user(tmp2, &uarg->list))
return -EFAULT;
karg.virtual = (void *) A(tmp1);
ulist = (drm32_buf_pub_t *) A(tmp2);
orig_count = karg.count;
karg.list = kmalloc(karg.count * sizeof(drm_buf_pub_t), GFP_KERNEL);
if (!karg.list)
return -ENOMEM;
ret = -EFAULT;
for (i = 0; i < karg.count; i++) {
if (get_user(karg.list[i].idx, &ulist[i].idx) ||
get_user(karg.list[i].total, &ulist[i].total) ||
get_user(karg.list[i].used, &ulist[i].used) ||
get_user(tmp1, &ulist[i].address))
goto out;
karg.list[i].address = (void *) A(tmp1);
}
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, DRM_IOCTL_MAP_BUFS, (unsigned long) &karg);
set_fs(old_fs);
if (!ret) {
for (i = 0; i < orig_count; i++) {
tmp1 = (u32) (long) karg.list[i].address;
if (put_user(karg.list[i].idx, &ulist[i].idx) ||
put_user(karg.list[i].total, &ulist[i].total) ||
put_user(karg.list[i].used, &ulist[i].used) ||
put_user(tmp1, &ulist[i].address)) {
ret = -EFAULT;
goto out;
}
}
if (put_user(karg.count, &uarg->count))
ret = -EFAULT;
}
out:
kfree(karg.list);
return ret;
}
typedef struct drm32_dma {
/* Indices here refer to the offset into
buflist in drm_buf_get_t. */
int context; /* Context handle */
int send_count; /* Number of buffers to send */
u32 send_indices; /* List of handles to buffers (int *) */
u32 send_sizes; /* Lengths of data to send (int *) */
drm_dma_flags_t flags; /* Flags */
int request_count; /* Number of buffers requested */
int request_size; /* Desired size for buffers */
u32 request_indices; /* Buffer information (int *) */
u32 request_sizes; /* (int *) */
int granted_count; /* Number of buffers granted */
} drm32_dma_t;
#define DRM32_IOCTL_DMA DRM_IOWR(0x29, drm32_dma_t)
/* RED PEN The DRM layer blindly dereferences the send/request
* indice/size arrays even though they are userland
* pointers. -DaveM
*/
static int drm32_dma(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_dma_t *uarg = (drm32_dma_t *) arg;
int *u_si, *u_ss, *u_ri, *u_rs;
drm_dma_t karg;
mm_segment_t old_fs;
int ret;
u32 tmp1, tmp2, tmp3, tmp4;
karg.send_indices = karg.send_sizes = NULL;
karg.request_indices = karg.request_sizes = NULL;
if (get_user(karg.context, &uarg->context) ||
get_user(karg.send_count, &uarg->send_count) ||
get_user(tmp1, &uarg->send_indices) ||
get_user(tmp2, &uarg->send_sizes) ||
get_user(karg.flags, &uarg->flags) ||
get_user(karg.request_count, &uarg->request_count) ||
get_user(karg.request_size, &uarg->request_size) ||
get_user(tmp3, &uarg->request_indices) ||
get_user(tmp4, &uarg->request_sizes) ||
get_user(karg.granted_count, &uarg->granted_count))
return -EFAULT;
u_si = (int *) A(tmp1);
u_ss = (int *) A(tmp2);
u_ri = (int *) A(tmp3);
u_rs = (int *) A(tmp4);
if (karg.send_count) {
karg.send_indices = kmalloc(karg.send_count * sizeof(int), GFP_KERNEL);
karg.send_sizes = kmalloc(karg.send_count * sizeof(int), GFP_KERNEL);
ret = -ENOMEM;
if (!karg.send_indices || !karg.send_sizes)
goto out;
ret = -EFAULT;
if (copy_from_user(karg.send_indices, u_si,
(karg.send_count * sizeof(int))) ||
copy_from_user(karg.send_sizes, u_ss,
(karg.send_count * sizeof(int))))
goto out;
}
if (karg.request_count) {
karg.request_indices = kmalloc(karg.request_count * sizeof(int), GFP_KERNEL);
karg.request_sizes = kmalloc(karg.request_count * sizeof(int), GFP_KERNEL);
ret = -ENOMEM;
if (!karg.request_indices || !karg.request_sizes)
goto out;
ret = -EFAULT;
if (copy_from_user(karg.request_indices, u_ri,
(karg.request_count * sizeof(int))) ||
copy_from_user(karg.request_sizes, u_rs,
(karg.request_count * sizeof(int))))
goto out;
}
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, DRM_IOCTL_DMA, (unsigned long) &karg);
set_fs(old_fs);
if (!ret) {
if (put_user(karg.context, &uarg->context) ||
put_user(karg.send_count, &uarg->send_count) ||
put_user(karg.flags, &uarg->flags) ||
put_user(karg.request_count, &uarg->request_count) ||
put_user(karg.request_size, &uarg->request_size) ||
put_user(karg.granted_count, &uarg->granted_count))
ret = -EFAULT;
if (karg.send_count) {
if (copy_to_user(u_si, karg.send_indices,
(karg.send_count * sizeof(int))) ||
copy_to_user(u_ss, karg.send_sizes,
(karg.send_count * sizeof(int))))
ret = -EFAULT;
}
if (karg.request_count) {
if (copy_to_user(u_ri, karg.request_indices,
(karg.request_count * sizeof(int))) ||
copy_to_user(u_rs, karg.request_sizes,
(karg.request_count * sizeof(int))))
ret = -EFAULT;
}
}
out:
if (karg.send_indices)
kfree(karg.send_indices);
if (karg.send_sizes)
kfree(karg.send_sizes);
if (karg.request_indices)
kfree(karg.request_indices);
if (karg.request_sizes)
kfree(karg.request_sizes);
return ret;
}
typedef struct drm32_ctx_res {
int count;
u32 contexts; /* (drm_ctx_t *) */
} drm32_ctx_res_t;
#define DRM32_IOCTL_RES_CTX DRM_IOWR(0x26, drm32_ctx_res_t)
static int drm32_res_ctx(unsigned int fd, unsigned int cmd, unsigned long arg)
{
drm32_ctx_res_t *uarg = (drm32_ctx_res_t *) arg;
drm_ctx_t *ulist;
drm_ctx_res_t karg;
mm_segment_t old_fs;
int orig_count, ret;
u32 tmp;
karg.contexts = NULL;
if (get_user(karg.count, &uarg->count) ||
get_user(tmp, &uarg->contexts))
return -EFAULT;
ulist = (drm_ctx_t *) A(tmp);
orig_count = karg.count;
if (karg.count && ulist) {
karg.contexts = kmalloc((karg.count * sizeof(drm_ctx_t)), GFP_KERNEL);
if (!karg.contexts)
return -ENOMEM;
if (copy_from_user(karg.contexts, ulist,
(karg.count * sizeof(drm_ctx_t)))) {
kfree(karg.contexts);
return -EFAULT;
}
}
old_fs = get_fs();
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, DRM_IOCTL_RES_CTX, (unsigned long) &karg);
set_fs(old_fs);
if (!ret) {
if (orig_count) {
if (copy_to_user(ulist, karg.contexts,
(orig_count * sizeof(drm_ctx_t))))
ret = -EFAULT;
}
if (put_user(karg.count, &uarg->count))
ret = -EFAULT;
}
if (karg.contexts)
kfree(karg.contexts);
return ret;
}
#endif
#define HANDLE_IOCTL(cmd, handler) { cmd, (ioctl_trans_handler_t)handler, NULL },
#define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd, sys_ioctl)
#define IOCTL_TABLE_START struct ioctl_trans ioctl_start[] = {
#define IOCTL_TABLE_END };
IOCTL_TABLE_START
#include <linux/compat_ioctl.h>
#define DECLARES
#include "compat_ioctl.c"
/* Might be moved to compat_ioctl.h with some ifdefs... */
COMPATIBLE_IOCTL(TIOCSTART)
COMPATIBLE_IOCTL(TIOCSTOP)
COMPATIBLE_IOCTL(TIOCSLTC)
/* PA-specific ioctls */
COMPATIBLE_IOCTL(PA_PERF_ON)
COMPATIBLE_IOCTL(PA_PERF_OFF)
COMPATIBLE_IOCTL(PA_PERF_VERSION)
/* And these ioctls need translation */
HANDLE_IOCTL(SIOCGPPPSTATS, dev_ifsioc)
HANDLE_IOCTL(SIOCGPPPCSTATS, dev_ifsioc)
HANDLE_IOCTL(SIOCGPPPVER, dev_ifsioc)
#if defined(CONFIG_GEN_RTC)
COMPATIBLE_IOCTL(RTC_AIE_ON)
COMPATIBLE_IOCTL(RTC_AIE_OFF)
COMPATIBLE_IOCTL(RTC_UIE_ON)
COMPATIBLE_IOCTL(RTC_UIE_OFF)
COMPATIBLE_IOCTL(RTC_PIE_ON)
COMPATIBLE_IOCTL(RTC_PIE_OFF)
COMPATIBLE_IOCTL(RTC_WIE_ON)
COMPATIBLE_IOCTL(RTC_WIE_OFF)
COMPATIBLE_IOCTL(RTC_ALM_SET) /* struct rtc_time only has ints */
COMPATIBLE_IOCTL(RTC_ALM_READ) /* struct rtc_time only has ints */
COMPATIBLE_IOCTL(RTC_RD_TIME) /* struct rtc_time only has ints */
COMPATIBLE_IOCTL(RTC_SET_TIME) /* struct rtc_time only has ints */
HANDLE_IOCTL(RTC_IRQP_READ, w_long)
COMPATIBLE_IOCTL(RTC_IRQP_SET)
HANDLE_IOCTL(RTC_EPOCH_READ, w_long)
COMPATIBLE_IOCTL(RTC_EPOCH_SET)
#endif
#if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE)
HANDLE_IOCTL(DRM32_IOCTL_VERSION, drm32_version);
HANDLE_IOCTL(DRM32_IOCTL_GET_UNIQUE, drm32_getsetunique);
HANDLE_IOCTL(DRM32_IOCTL_SET_UNIQUE, drm32_getsetunique);
HANDLE_IOCTL(DRM32_IOCTL_ADD_MAP, drm32_addmap);
HANDLE_IOCTL(DRM32_IOCTL_INFO_BUFS, drm32_info_bufs);
HANDLE_IOCTL(DRM32_IOCTL_FREE_BUFS, drm32_free_bufs);
HANDLE_IOCTL(DRM32_IOCTL_MAP_BUFS, drm32_map_bufs);
HANDLE_IOCTL(DRM32_IOCTL_DMA, drm32_dma);
HANDLE_IOCTL(DRM32_IOCTL_RES_CTX, drm32_res_ctx);
#endif /* DRM */
IOCTL_TABLE_END
int ioctl_table_size = ARRAY_SIZE(ioctl_start);
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