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/* SPDX-License-Identifier: GPL-3.0-or-later */
#ifndef UTIL_H
#define UTIL_H
#include <sys/types.h>
/**
* @brief Turn a file path to a more usefull form
*
* Removes all preceeding and trailing slashes, shortens all sequences of
* slashes to a single slash and returns failure state if one of the path
* components is '..' or '.'.
*
* @param filename A pointer to the path to work on
*
* @return Zero on success, -1 on failure
*/
int canonicalize_name(char *filename);
/**
* @brief Write data to a file
*
* This is a wrapper around the Unix write() system call. It retries the write
* if it is interrupted by a signal or only part of the data was written.
*/
ssize_t write_retry(int fd, void *data, size_t size);
/**
* @brief Read data from a file
*
* This is a wrapper around the Unix read() system call. It retries the read
* if it is interrupted by a signal or less than the desired size was read.
*/
ssize_t read_retry(int fd, void *buffer, size_t size);
/**
* @brief A common implementation of the '--version' command line argument
*
* Prints out version information. The program name is extracted from the
* BSD style __progname global variable.
*/
void print_version(void);
/**
* @brief Create a directory and all its parents
*
* This is a wrapper around mkdir() that behaves like 'mkdir -p'. It tries to
* create every component of the given path and treats already existing entries
* as success.
*
* @param path A path to create
*
* @return Zero on success, -1 on failure
*/
int mkdir_p(const char *path);
#endif /* UTIL_H */
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