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NAME	SIZE	ACTIONS
📁 common		[ DEL ]
📁 ftrace_hooks		[ DEL ]
📁 lsm_hooks		[ DEL ]
📁 syscall_hooks		[ DEL ]
📁 transport		[ DEL ]
📄 Kbuild	10,535 B	[ EDIT ] \| [ DEL ]
📄 Makefile	2,282 B	[ EDIT ] \| [ DEL ]
📄 compat.c	8,577 B	[ EDIT ] \| [ DEL ]
📄 compat.h	12,265 B	[ EDIT ] \| [ DEL ]
📄 debug.h	3,649 B	[ EDIT ] \| [ DEL ]
📄 dkms.conf	146 B	[ EDIT ] \| [ DEL ]
📄 file_contexts.c	54,239 B	[ EDIT ] \| [ DEL ]
📄 file_contexts.h	2,926 B	[ EDIT ] \| [ DEL ]
📄 file_contexts_priv.h	5,463 B	[ EDIT ] \| [ DEL ]
📄 file_handle_tools.h	2,287 B	[ EDIT ] \| [ DEL ]
📄 file_key_tools.h	950 B	[ EDIT ] \| [ DEL ]
📄 file_path_tools.h	2,140 B	[ EDIT ] \| [ DEL ]
📄 hashtable_compat.h	2,798 B	[ EDIT ] \| [ DEL ]
📄 hook_trampoline_common.h	4,395 B	[ EDIT ] \| [ DEL ]
📄 interval_tree.h	779 B	[ EDIT ] \| [ DEL ]
📄 memory.c	3,393 B	[ EDIT ] \| [ DEL ]
📄 memory.h	3,059 B	[ EDIT ] \| [ DEL ]
📄 module.c	2,739 B	[ EDIT ] \| [ DEL ]
📄 module_ref.h	421 B	[ EDIT ] \| [ DEL ]
📄 module_rundown_protection.c	3,731 B	[ EDIT ] \| [ DEL ]
📄 module_rundown_protection.h	743 B	[ EDIT ] \| [ DEL ]
📄 path_tools.h	5,980 B	[ EDIT ] \| [ DEL ]
📄 rundown_protection.c	4,301 B	[ EDIT ] \| [ DEL ]
📄 rundown_protection.h	2,899 B	[ EDIT ] \| [ DEL ]
📄 safe_kobject.h	1,315 B	[ EDIT ] \| [ DEL ]
📄 si_common.h	4,331 B	[ EDIT ] \| [ DEL ]
📄 si_fp_properties.h	858 B	[ EDIT ] \| [ DEL ]
📄 si_fp_properties_x.h	17,177 B	[ EDIT ] \| [ DEL ]
📄 si_fp_value_types.h	515 B	[ EDIT ] \| [ DEL ]
📄 si_fp_value_types_x.h	1,279 B	[ EDIT ] \| [ DEL ]
📄 si_size.h	4,253 B	[ EDIT ] \| [ DEL ]
📄 si_templates.h	2,452 B	[ EDIT ] \| [ DEL ]
📄 si_writer.h	7,101 B	[ EDIT ] \| [ DEL ]
📄 si_writer_common.h	12,561 B	[ EDIT ] \| [ DEL ]
📄 stringify.h	261 B	[ EDIT ] \| [ DEL ]
📄 task_info_map.c	14,965 B	[ EDIT ] \| [ DEL ]
📄 task_info_map.h	6,481 B	[ EDIT ] \| [ DEL ]
📄 task_info_map_common.h	4,248 B	[ EDIT ] \| [ DEL ]
📄 task_tools.h	1,370 B	[ EDIT ] \| [ DEL ]
📄 tracepoints.c	3,668 B	[ EDIT ] \| [ DEL ]
📄 tracepoints.h	299 B	[ EDIT ] \| [ DEL ]
📄 write_protection.h	2,257 B	[ EDIT ] \| [ DEL ]

[ CLOSE ]

EDIT: file_path_tools.h

/**
@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) {
	long ret = -EFAULT;
	char* str;

info->buf = (char*) kmem_cache_alloc(names_cachep, mem_flags(nowait));
	if (!info->buf) {
		goto err;
	}

str = d_absolute_path_compat(path, info->buf, PATH_MAX - (dir ? 1 : 0));
	if (IS_ERR(str)) {
    	ret = PTR_ERR(str);
		kmem_cache_free(names_cachep, 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) {
		kmem_cache_free(names_cachep, info->buf);
	}
}