lib/fs.h

   1 /** \file fs.h
   2  *  \brief Header: fs compatibility definitions
   3  */
   4
   5 /* Include file to use opendir/closedir/readdir */
   6
   7 #ifndef MC_FS_H
   8 #define MC_FS_H
   9
  10 #include <sys/types.h>
  11 #include <unistd.h>
  12 #include <sys/stat.h>
  13 #include <dirent.h>
  14
  15 /*** typedefs(not structures) and defined constants **********************************************/
  16
  17 /* Replacement for permission bits missing in sys/stat.h */
  18 #ifndef S_ISLNK
  19 #define S_ISLNK(x) 0
  20 #endif
  21
  22 #ifndef S_ISSOCK
  23 #define S_ISSOCK(x) 0
  24 #endif
  25
  26 #ifndef S_ISFIFO
  27 #define S_ISFIFO(x) 0
  28 #endif
  29
  30 #ifndef S_ISCHR
  31 #define S_ISCHR(x) 0
  32 #endif
  33
  34 #ifndef S_ISBLK
  35 #define S_ISBLK(x) 0
  36 #endif
  37
  38 /* Door is something that only exists on Solaris */
  39 #ifndef S_ISDOOR
  40 #define S_ISDOOR(x) 0
  41 #endif
  42
  43 /* Special named files are widely used in QNX6 */
  44 #ifndef S_ISNAM
  45 #define S_ISNAM(x) 0
  46 #endif
  47
  48 #ifndef PATH_MAX
  49 #ifdef _POSIX_VERSION
  50 #define PATH_MAX _POSIX_PATH_MAX
  51 #else
  52 #ifdef MAXPATHLEN
  53 #define PATH_MAX MAXPATHLEN
  54 #else
  55 #define PATH_MAX 1024
  56 #endif
  57 #endif
  58 #endif
  59
  60 #ifndef MAXPATHLEN
  61 #define MC_MAXPATHLEN 4096
  62 #else
  63 #define MC_MAXPATHLEN MAXPATHLEN
  64 #endif
  65
  66 /* unistd.h defines _POSIX_VERSION on POSIX.1 systems. */
  67 #define NLENGTH(dirent) (strlen ((dirent)->d_name))
  68 #define DIRENT_LENGTH_COMPUTED 1
  69
  70 /* DragonFlyBSD doesn't provide MAXNAMLEN macro */
  71 #ifndef MAXNAMLEN
  72 #define MAXNAMLEN NAME_MAX
  73 #endif
  74
  75 #define MC_MAXFILENAMELEN MAXNAMLEN
  76
  77 #define DIR_IS_DOT(x) ((x)[0] == '.' && (x)[1] == '\0')
  78 #define DIR_IS_DOTDOT(x) ((x)[0] == '.' && (x)[1] == '.' && (x)[2] == '\0')
  79
  80 /*** enums ***************************************************************************************/
  81
  82 /*** structures declarations (and typedefs of structures)*****************************************/
  83
  84 /*** global variables defined in .c file *********************************************************/
  85
  86 /*** declarations of public functions ************************************************************/
  87
  88 /*** inline functions ****************************************************************************/
  89
  90 static inline void
  91 compute_namelen (struct dirent *dent __attribute__ ((unused)))
  92 {
  93 #ifdef DIRENT_LENGTH_COMPUTED
  94     (void) dent;
  95     return;
  96 #else
  97     dent->d_namlen = strlen (dent);
  98 #endif
  99 }
 100
 101 #endif