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media: atomisp: get rid of a string_support.h abstraction layer

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Some parts of the driver have their own implementation of
memcpy() & friends. Replace all of them by strscpy().

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-06-03 08:19:44 +02:00
parent 48b532b9d2
commit 662fb4fceb
8 changed files with 38 additions and 215 deletions
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165
drivers/staging/media/atomisp/pci/hive_isp_css_include/string_support.h
View File

@ -1,165 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2015, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#ifndef __STRING_SUPPORT_H_INCLUDED__
#define __STRING_SUPPORT_H_INCLUDED__
#include <platform_support.h>
#include <type_support.h>
/*
* For all non microsoft cases, we need the following functions
*/
/* @brief Copy from src_buf to dest_buf.
*
* @param[out] dest_buf. Destination buffer to copy to
* @param[in] dest_size. The size of the destination buffer in bytes
* @param[in] src_buf. The source buffer
* @param[in] src_size. The size of the source buffer in bytes
* @return 0 on success, error code on failure
* @return -EINVAL on Invalid arguments
* @return ERANGE on Destination size too small
*/
static inline int memcpy_s(
void *dest_buf,
size_t dest_size,
const void *src_buf,
size_t src_size)
{
if ((!src_buf) || (!dest_buf)) {
/* Invalid arguments*/
return -EINVAL;
}
if ((dest_size < src_size) || (src_size == 0)) {
/* Destination too small*/
return ERANGE;
}
memcpy(dest_buf, src_buf, src_size);
return 0;
}
/* @brief Get the length of the string, excluding the null terminator
*
* @param[in] src_str. The source string
* @param[in] max_len. Look only for max_len bytes in the string
* @return Return the string length excluding null character
* @return Return max_len if no null character in the first max_len bytes
* @return Returns 0 if src_str is NULL
*/
static size_t strnlen_s(
const char *src_str,
size_t max_len)
{
size_t ix;
if (!src_str) {
/* Invalid arguments*/
return 0;
}
for (ix = 0; ix < max_len && src_str[ix] != '\0'; ix++)
;
/* On Error, it will return src_size == max_len*/
return ix;
}
/* @brief Copy string from src_str to dest_str
*
* @param[out] dest_str. Destination buffer to copy to
* @param[in] dest_size. The size of the destination buffer in bytes
* @param[in] src_str. The source buffer
* @param[in] src_size. The size of the source buffer in bytes
* @return Returns 0 on success
* @return Returns -EINVAL on invalid arguments
* @return Returns ERANGE on destination size too small
*/
static inline int strncpy_s(
char *dest_str,
size_t dest_size,
const char *src_str,
size_t src_size)
{
size_t len;
if (!dest_str) {
/* Invalid arguments*/
return -EINVAL;
}
if ((!src_str) || (dest_size == 0)) {
/* Invalid arguments*/
dest_str[0] = '\0';
return -EINVAL;
}
len = strnlen_s(src_str, src_size);
if (len >= dest_size) {
/* Destination too small*/
dest_str[0] = '\0';
return ERANGE;
}
/* dest_str is big enough for the len */
strncpy(dest_str, src_str, len);
dest_str[len] = '\0';
return 0;
}
/* @brief Copy string from src_str to dest_str
*
* @param[out] dest_str. Destination buffer to copy to
* @param[in] dest_size. The size of the destination buffer in bytes
* @param[in] src_str. The source buffer
* @return Returns 0 on success
* @return Returns -EINVAL on invalid arguments
* @return Returns ERANGE on destination size too small
*/
static inline int strcpy_s(
char *dest_str,
size_t dest_size,
const char *src_str)
{
size_t len;
if (!dest_str) {
/* Invalid arguments*/
return -EINVAL;
}
if ((!src_str) || (dest_size == 0)) {
/* Invalid arguments*/
dest_str[0] = '\0';
return -EINVAL;
}
len = strnlen_s(src_str, dest_size);
if (len >= dest_size) {
/* Destination too small*/
dest_str[0] = '\0';
return ERANGE;
}
/* dest_str is big enough for the len */
strncpy(dest_str, src_str, len);
dest_str[len] = '\0';
return 0;
}
#endif /* __STRING_SUPPORT_H_INCLUDED__ */

3
drivers/staging/media/atomisp/pci/isp/kernels/ctc/ctc_1.0/ia_css_ctc_table.host.c
View File

@ -13,8 +13,9 @@
* more details.
*/
#include <linux/string.h> /* for memcpy() */
#include <type_support.h>
#include <string_support.h> /* memcpy */
#include "system_global.h"
#include "vamem.h"
#include "ia_css_types.h"

3
drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_1.0/ia_css_gc_table.host.c
View File

@ -13,8 +13,9 @@
* more details.
*/
#include <linux/string.h> /* for memcpy() */
#include <type_support.h>
#include <string_support.h> /* memcpy */
#include "system_global.h"
#include "vamem.h"
#include "ia_css_types.h"

3
drivers/staging/media/atomisp/pci/isp/kernels/gc/gc_2/ia_css_gc2_table.host.c
View File

@ -13,8 +13,9 @@
* more details.
*/
#include <linux/string.h> /* for memcpy() */
#include <type_support.h>
#include <string_support.h> /* memcpy */
#include "system_global.h"
#include "vamem.h"
#include "ia_css_types.h"

3
drivers/staging/media/atomisp/pci/isp/kernels/xnr/xnr_1.0/ia_css_xnr_table.host.c
View File

@ -13,8 +13,9 @@
* more details.
*/
#include <linux/string.h> /* for memcpy() */
#include <type_support.h>
#include <string_support.h> /* memcpy */
#include "system_global.h"
#include "vamem.h"
#include "ia_css_types.h"

45
drivers/staging/media/atomisp/pci/runtime/debug/src/ia_css_debug.c
View File

@ -31,6 +31,8 @@
#define __INLINE_STREAM2MMIO__
#endif
#include <linux/string.h> /* for strscpy() */
#include "ia_css_debug.h"
#include "ia_css_debug_pipe.h"
#include "ia_css_irq.h"
@ -47,7 +49,6 @@
#include "system_local.h"
#include "assert_support.h"
#include "print_support.h"
#include "string_support.h"
#include "fifo_monitor.h"
@ -2769,8 +2770,9 @@ ia_css_debug_pipe_graph_dump_stage(
stage->binary->info->blob->name, stage->stage_num);
} else if (stage->firmware) {
bin_type = "firmware";
strncpy_s(blob_name, sizeof(blob_name),
IA_CSS_EXT_ISP_PROG_NAME(stage->firmware), sizeof(blob_name));
strscpy(blob_name, IA_CSS_EXT_ISP_PROG_NAME(stage->firmware),
sizeof(blob_name));
}
/* Guard in case of binaries that don't have any binary_info */
@ -2836,10 +2838,8 @@ ia_css_debug_pipe_graph_dump_stage(
while (ei[p] != ',')
p--;
/* Last comma found, copy till that comma */
strncpy_s(enable_info1,
sizeof(enable_info1),
ei, p);
enable_info1[p] = '\0';
strscpy(enable_info1, ei,
p > sizeof(enable_info1) ? sizeof(enable_info1) : p);
ei += p + 1;
l = strlen(ei);
@ -2849,10 +2849,10 @@ ia_css_debug_pipe_graph_dump_stage(
/* we cannot use ei as argument because
* it is not guaranteed dword aligned
*/
strncpy_s(enable_info2,
sizeof(enable_info2),
ei, l);
enable_info2[l] = '\0';
strscpy(enable_info2, ei,
l > sizeof(enable_info2) ? sizeof(enable_info2) : l);
snprintf(enable_info, sizeof(enable_info), "%s\\n%s",
enable_info1, enable_info2);
@ -2861,10 +2861,10 @@ ia_css_debug_pipe_graph_dump_stage(
p = ENABLE_LINE_MAX_LENGTH;
while (ei[p] != ',')
p--;
strncpy_s(enable_info2,
sizeof(enable_info2),
ei, p);
enable_info2[p] = '\0';
strscpy(enable_info2, ei,
p > sizeof(enable_info2) ? sizeof(enable_info2) : p);
ei += p + 1;
l = strlen(ei);
@ -2873,9 +2873,8 @@ ia_css_debug_pipe_graph_dump_stage(
/* we cannot use ei as argument because
* it is not guaranteed dword aligned
*/
strcpy_s(enable_info3,
sizeof(enable_info3), ei);
enable_info3[l] = '\0';
strscpy(enable_info3, ei,
sizeof(enable_info3));
snprintf(enable_info, sizeof(enable_info),
"%s\\n%s\\n%s",
enable_info1, enable_info2,
@ -2885,13 +2884,11 @@ ia_css_debug_pipe_graph_dump_stage(
p = ENABLE_LINE_MAX_LENGTH;
while (ei[p] != ',')
p--;
strncpy_s(enable_info3,
sizeof(enable_info3),
ei, p);
enable_info3[p] = '\0';
strscpy(enable_info3, ei,
p > sizeof(enable_info3) ? sizeof(enable_info3) : p);
ei += p + 1;
strcpy_s(enable_info3,
sizeof(enable_info3), ei);
strscpy(enable_info3, ei,
sizeof(enable_info3));
snprintf(enable_info, sizeof(enable_info),
"%s\\n%s\\n%s",
enable_info1, enable_info2,

29
drivers/staging/media/atomisp/pci/runtime/isys/src/virtual_isys.c
View File

@ -13,6 +13,8 @@
* more details.
*/
#include <linux/string.h> /* for memcpy() */
#include "system_global.h"
#ifdef USE_INPUT_SYSTEM_VERSION_2401
@ -20,7 +22,6 @@
#include "ia_css_isys.h"
#include "ia_css_debug.h"
#include "math_support.h"
#include "string_support.h"
#include "virtual_isys.h"
#include "isp.h"
#include "sh_css_defs.h"
@ -650,14 +651,8 @@ static bool calculate_tpg_cfg(
input_system_cfg_t *isys_cfg,
pixelgen_tpg_cfg_t *cfg)
{
(void)channel;
(void)input_port;
memcpy(cfg, &isys_cfg->tpg_port_attr, sizeof(pixelgen_tpg_cfg_t));
memcpy_s(
(void *)cfg,
sizeof(pixelgen_tpg_cfg_t),
(void *)(&isys_cfg->tpg_port_attr),
sizeof(pixelgen_tpg_cfg_t));
return true;
}
@ -667,14 +662,8 @@ static bool calculate_prbs_cfg(
input_system_cfg_t *isys_cfg,
pixelgen_prbs_cfg_t *cfg)
{
(void)channel;
(void)input_port;
memcpy(cfg, &isys_cfg->prbs_port_attr, sizeof(pixelgen_prbs_cfg_t));
memcpy_s(
(void *)cfg,
sizeof(pixelgen_prbs_cfg_t),
(void *)(&isys_cfg->prbs_port_attr),
sizeof(pixelgen_prbs_cfg_t));
return true;
}
@ -692,12 +681,10 @@ static bool calculate_be_cfg(
bool metadata,
csi_rx_backend_cfg_t *cfg)
{
memcpy_s(
(void *)(&cfg->lut_entry),
sizeof(csi_rx_backend_lut_entry_t),
metadata ? (void *)(&input_port->metadata.backend_lut_entry) :
(void *)(&input_port->csi_rx.backend_lut_entry),
sizeof(csi_rx_backend_lut_entry_t));
memcpy(&cfg->lut_entry,
metadata ? &input_port->metadata.backend_lut_entry :
&input_port->csi_rx.backend_lut_entry,
sizeof(csi_rx_backend_lut_entry_t));
cfg->csi_mipi_cfg.virtual_channel = isys_cfg->csi_port_attr.ch_id;
if (metadata) {

2
drivers/staging/media/atomisp/pci/sh_css_firmware.c
View File

@ -13,6 +13,7 @@
* more details.
*/
#include <linux/string.h> /* for memcpy() */
#include <linux/slab.h>
#include <linux/vmalloc.h>
@ -28,7 +29,6 @@
#include "ia_css_isp_param.h"
#include "assert_support.h"
#include "string_support.h"
#include "isp.h" /* PMEM_WIDTH_LOG2 */