util.h

   1 /*
   2  * Copyright (C) 2006-2009 Andre Noll <maan@tuebingen.mpg.de>
   3  *
   4  * Licensed under the GPL v2. For licencing details see COPYING.
   5  */
   6
   7 /** \file util.h exported functions from util.c */
   8
   9 int osl_open(const char *path, int flags, mode_t mode);
  10 int mmap_full_file(const char *filename, int open_mode, void **map,
  11         size_t *size, int *fd_ptr);
  12 int osl_munmap(void *start, size_t length);
  13 int write_all(int fd, const char *buf, size_t *len);
  14 int write_file(const char *filename, const void *buf, size_t size);
  15 int truncate_file(const char *filename, off_t size);
  16
  17 /**
  18  * A wrapper for mkdir(2).
  19  *
  20  * \param path Name of the directory to create.
  21  * \param mode The permissions to use.
  22  *
  23  * \return Standard.
  24  */
  25 static inline int osl_mkdir(const char *path, mode_t mode)
  26 {
  27         if (!mkdir(path, mode))
  28                 return 1;
  29         return errno == EEXIST? -E_OSL_DIR_EXISTS : -E_OSL_MKDIR;
  30 }
  31
  32 /**
  33  * A wrapper for rename(2).
  34  *
  35  * \param old_path The source path.
  36  * \param new_path The destination path.
  37  *
  38  * \return Standard.
  39  *
  40  * \sa rename(2).
  41  */
  42 _static_inline_ int osl_rename(const char *old_path, const char *new_path)
  43 {
  44         if (rename(old_path, new_path) < 0)
  45                 return -E_OSL_RENAME;
  46         return 1;
  47 }
  48
  49 _static_inline_ int osl_stat(const char *path, struct stat *buf)
  50 {
  51         if (stat(path, buf) >= 0)
  52                 return 1;
  53         return errno == ENOENT? -E_OSL_NOENT : -E_OSL_STAT;
  54 }