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Name	Size	Permission	Date
common	[ DIR ]	drwxr-xr-x	2025-05-21 05:57
ftrace_hooks	[ DIR ]	drwxr-xr-x	2025-05-21 05:57
lsm_hooks	[ DIR ]	drwxr-xr-x	2025-05-21 05:57
syscall_hooks	[ DIR ]	drwxr-xr-x	2025-05-21 05:57
transport	[ DIR ]	drwxr-xr-x	2025-05-21 05:57
Kbuild	10.12 KB	-rw-r--r--	2025-05-21 05:57
Makefile	2.23 KB	-rw-r--r--	2025-05-21 05:57
compat.c	8.38 KB	-rw-r--r--	2025-05-21 05:57
compat.h	11.49 KB	-rw-r--r--	2025-05-21 05:57
debug.h	3.56 KB	-rw-r--r--	2025-05-21 05:57
dkms.conf	146 B	-rw-r--r--	2025-05-21 05:57
file_contexts.c	50 KB	-rw-r--r--	2025-05-21 05:57
file_contexts.h	2.82 KB	-rw-r--r--	2025-05-21 05:57
file_contexts_priv.h	5.42 KB	-rw-r--r--	2025-05-21 05:57
file_handle_tools.h	2.16 KB	-rw-r--r--	2025-05-21 05:57
file_key_tools.h	869 B	-rw-r--r--	2025-05-21 05:57
file_path_tools.h	2.09 KB	-rw-r--r--	2025-05-21 05:57
hashtable_compat.h	2.73 KB	-rw-r--r--	2025-05-21 05:57
hook_trampoline_common.h	4.29 KB	-rw-r--r--	2025-05-21 05:57
interval_tree.h	779 B	-rw-r--r--	2025-05-21 05:57
memory.h	1.37 KB	-rw-r--r--	2025-05-21 05:57
module.c	1.86 KB	-rw-r--r--	2025-05-21 05:57
module_ref.h	421 B	-rw-r--r--	2025-05-21 05:57
module_rundown_protection.c	3.64 KB	-rw-r--r--	2025-05-21 05:57
module_rundown_protection.h	743 B	-rw-r--r--	2025-05-21 05:57
path_tools.h	5.29 KB	-rw-r--r--	2025-05-21 05:57
rundown_protection.c	4.2 KB	-rw-r--r--	2025-05-21 05:57
rundown_protection.h	2.83 KB	-rw-r--r--	2025-05-21 05:57
si_common.h	4.23 KB	-rw-r--r--	2025-05-21 05:57
si_fp_properties.h	858 B	-rw-r--r--	2025-05-21 05:57
si_fp_properties_x.h	18.11 KB	-rw-r--r--	2025-05-21 05:57
si_fp_value_types.h	515 B	-rw-r--r--	2025-05-21 05:57
si_fp_value_types_x.h	1.25 KB	-rw-r--r--	2025-05-21 05:57
si_size.h	4.15 KB	-rw-r--r--	2025-05-21 05:57
si_templates.h	2.39 KB	-rw-r--r--	2025-05-21 05:57
si_writer.h	6.65 KB	-rw-r--r--	2025-05-21 05:57
si_writer_common.h	10.45 KB	-rw-r--r--	2025-05-21 05:57
stringify.h	261 B	-rw-r--r--	2025-05-21 05:57
task_info_map.c	16.45 KB	-rw-r--r--	2025-05-21 05:57
task_info_map.h	6.24 KB	-rw-r--r--	2025-05-21 05:57
task_tools.h	1.34 KB	-rw-r--r--	2025-05-21 05:57
tracepoints.c	3.58 KB	-rw-r--r--	2025-05-21 05:57
tracepoints.h	299 B	-rw-r--r--	2025-05-21 05:57
write_protection.h	2.2 KB	-rw-r--r--	2025-05-21 05:57

Rename

/**
@file     file_path_tools.h
@brief    Tools for creating and working with file paths
@details  Copyright (c) 2024 Acronis International GmbH
@author   Denis Kopyrin (denis.kopyrin@acronis.com)
@since    $Id: $
*/

#pragma once

#include "compat.h"
#include "memory.h"
#include "si_common.h"

typedef struct {
	char* buf;
	SiSizedString str;
} path_info_t;

// init_empty initialize message enough so 'free' can work
static inline void path_info_init_empty(path_info_t* info) {
	info->buf = NULL;
}

static inline long path_info_make_with_alloc_flags(path_info_t* info, const struct path* path, bool dir, bool nowait) {
	const size_t max_path_len = PATH_MAX;
	long ret = -EFAULT;
	char* str;

info->buf = (char*) mem_alloc_with_alloc_flags(max_path_len, nowait);
	if (!info->buf) {
		goto err;
	}

str = d_absolute_path_compat(path, info->buf, max_path_len - (dir ? 1 : 0));
	if (IS_ERR(str)) {
    	ret = PTR_ERR(str);
		mem_free(info->buf);
		info->buf = NULL;
		goto err;
	}

info->str.value = str;
	info->str.length = strlen(info->str.value);
	if (dir) {
		if (str[info->str.length - 1] != '/') {
			str[info->str.length] = '/';
			str[info->str.length + 1] = '\0';
			info->str.length++;
		}
	}

return 0;

err:
	info->str = (SiSizedString) {};
	return ret;
}

static inline long path_info_make(path_info_t* info, const struct path* path, bool dir) {
	return path_info_make_with_alloc_flags(info, path, dir, false /*nowait*/);
}

static inline long path_info_make_nowait(path_info_t* info, const struct path* path, bool dir) {
	return path_info_make_with_alloc_flags(info, path, dir, true /*nowait*/);
}

static inline long path_info_make_from_valid(path_info_t* info, const struct path* path) {
	return path_info_make_with_alloc_flags(info, path, S_ISDIR(path->dentry->d_inode->i_mode), false /*nowait*/);
}

static inline long path_info_make_from_valid_nowait(path_info_t* info, const struct path* path) {
	return path_info_make_with_alloc_flags(info, path, S_ISDIR(path->dentry->d_inode->i_mode), true /*nowait*/);
}

static inline void path_info_free(const path_info_t* info) {
	if (info->buf) {
		mem_free(info->buf);
	}
}