utils.h

// SPDX-License-Identifier: LGPL-2.0

/*
 * Copyright (C) 2023 Rajat Khandelwal <rajat.khandelwal@intel.com>
 * Copyright (C) 2023 Intel Corporation
 */

#include <stdbool.h>
#include <unistd.h>
#include <stdint.h>

#define u8			uint8_t
#define u16			uint16_t
#define u32			uint32_t
#define u64			uint64_t

#define s8			int8_t
#define s16			int16_t
#define s32			int32_t
#define s64			int64_t

#define BITMASK(x, y)		(((~(0ULL)) - ((1ULL) << (y)) + 1) & \
				(~(0ULL) >> (63 - (x))))

#define BIT(x)			(u64)1 << x

#define MAX_LEN			1024

#define PAGE_SIZE		sysconf(_SC_PAGE_SIZE)

#define READ_FLAG		BIT(0)
#define WRITE_FLAG		BIT(1)
#define RDWR_FLAG		(READ_FLAG | WRITE_FLAG)

#define msleep(x)		usleep(x * 1000)

#define REDIRECTED_NULL		"0>/dev/null 1>/dev/null 2>/dev/null"

#define COMPLEMENT_BIT64	(u64)~0

/* Max. value the respective no. of bits can reflect + 1 */
#define MAX_BIT8		BIT(8)
#define MAX_BIT16		BIT(16)
#define MAX_BIT32		BIT(32)

struct list_item {
	void *val;
	struct list_item *next;
};

/*
 * Mapped virtual and physical addresses.
 * Default size is coded to 'PAGE_SIZE'.
 */
struct va_phy_addr {
	struct vfio_iommu_type1_dma_map *dma_map;
	void *va;
	u64 iova;
};

struct list_item* list_add(struct list_item *tail, void *val);
int strpos(const char *str, const char *substr, u64 offset);
char* do_bash_cmd(const char *cmd);
struct list_item* do_bash_cmd_list(const char *cmd);
char* trim_white_space(char *str);
char* switch_cmd_to_root(const char *cmd);
u64 get_page_aligned_addr(u64 off);
void* get_user_mapped_read_va(int fd, u64 off, u64 size);
void* get_user_mapped_write_va(int fd, u64 off, u64 size);
void* get_user_mapped_rw_va(int fd, u64 off, u64 size);
void unmap_user_mapped_va(void *addr, u64 size);
u64 get_size_least_set(u64 bitmask);
u32 get_crc32(u32 crc, const u8 *data, u64 size);
u8 get_crc8(u8 crc, const u8 *data, u64 size);
void convert_to_be32(u32 *data, u64 len);
void be32_to_u32(u32 *data, u64 len);
u32 strtoud(char *str);
u32 strtouh(char *str);
char* get_substr(const char *str, u64 pos, u64 len);
u64 get_total_list_items(const struct list_item *head);
bool is_present_in_list(const struct list_item *head, const char *str);
char** list_to_numbered_array(struct list_item *item);
bool isnum(const char *arr);
void free_list(struct list_item *head);
bool is_link_nabs(const char *name);