92e090c560
Shared variable is accessed without any mutual exclusion, it may result into overwriting memory address and cause invalid write access to buffer after free or invalid free. Convert shared variable to local as it's usage was limited with in API itself, it will avoid overwriting memory address by another thread as all of them will have their own copy. Change-Id: I36692313396f6c60e1be4479711feb14bb92ae4c Signed-off-by: Gaurav Singhal <quic_gsinghal@quicinc.com>
81 satır
1.8 KiB
C
81 satır
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef __ESE_COLD_RESET_H
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#define __ESE_COLD_RESET_H
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#include <nfcinfo.h>
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#define MAX_BUFF_SIZE 264
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/* ESE_COLD_RESET MACROS */
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#define COLD_RESET_CMD_LEN 3
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#define COLD_RESET_RSP_LEN 4
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#define COLD_RESET_PROT_CMD_LEN 4
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#define COLD_RESET_PROT_RSP_LEN 4
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#define PROP_NCI_CMD_GID 0x2F
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#define COLD_RESET_CMD_PL_LEN 0x00
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#define COLD_RESET_PROT_CMD_PL_LEN 0x01
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#define PROP_NCI_RSP_GID 0x4F
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#define COLD_RESET_OID 0x1E
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#define COLD_RESET_PROT_OID 0x1F
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#define ESE_COLD_RESET _IOWR(NFCC_MAGIC, 0x08, struct ese_ioctl_arg)
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enum ese_ioctl_arg_type {
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ESE_ARG_TYPE_COLD_RESET = 0,
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};
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/* ESE_COLD_RESET ioctl origin, max 4 are supported */
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enum ese_cold_reset_origin {
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ESE_COLD_RESET_ORIGIN_ESE = 0,
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ESE_COLD_RESET_ORIGIN_NFC,
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ESE_COLD_RESET_ORIGIN_OTHER = 0x20,
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ESE_COLD_RESET_ORIGIN_NONE = 0xFF,
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};
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/* ESE_COLD_RESET ioctl sub commands, max 8 are supported */
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enum ese_cold_reset_sub_cmd {
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ESE_COLD_RESET_DO = 0,
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ESE_COLD_RESET_PROTECT_EN,
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ESE_COLD_RESET_PROTECT_DIS,
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};
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/* Data passed in buf of ese cold reset ioctl */
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struct ese_cold_reset_arg {
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__u8 src;
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__u8 sub_cmd;
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__u16 rfu;
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};
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/* Argument buffer passed to ese ioctl */
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struct ese_ioctl_arg {
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__u64 buf;
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__u32 buf_size;
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__u8 type;
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};
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/* Features specific Parameters */
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struct cold_reset {
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wait_queue_head_t read_wq;
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char *cmd_buf;
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uint16_t cmd_len;
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uint16_t rsp_len;
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/* Source of last ese protection command */
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uint8_t last_src_ese_prot;
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uint8_t status;
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/* Is cold reset protection enabled */
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bool is_crp_en;
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bool rsp_pending;
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/* Is NFC enabled from UI */
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bool is_nfc_enabled;
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};
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struct nfc_dev;
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int ese_cold_reset_ioctl(struct nfc_dev *nfc_dev, unsigned long arg);
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int read_cold_reset_rsp(struct nfc_dev *nfc_dev, char *header);
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#endif
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