compiler/clib/include/fcntl.h

   1 #ifndef _FCNTL_H_
   2 #define _FCNTL_H_
   3
   4 /*
   5     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc: ANSI-C header file fcntl.h
   9     Lang: english
  10 */
  11
  12 #include <sys/_types.h>
  13 #include <sys/cdefs.h>
  14
  15 #if __XSI_VISIBLE
  16 #include <unistd.h>
  17 #include <sys/stat.h>
  18 #endif
  19
  20 #ifndef __AROS_PID_T_DECLARED
  21 #define __AROS_PID_T_DECLARED
  22 typedef __pid_t         pid_t;
  23 #endif
  24
  25 #ifndef __AROS_MODE_T_DECLARED
  26 #define __AROS_MODE_T_DECLARED
  27 typedef __mode_t        mode_t;
  28 #endif
  29
  30 #ifndef __AROS_OFF_T_DECLARED
  31 #define __AROS_OFF_T_DECLARED
  32 typedef __off_t         off_t;
  33 #endif
  34
  35 /* Flags for open */
  36
  37 /* Access modes: */
  38 #define O_ACCMODE       0x0003
  39 #define O_RDONLY        0x0001
  40 #define O_WRONLY        0x0002
  41 #define O_RDWR          (O_RDONLY | O_WRONLY)
  42
  43 /* The GNU system specifies these */
  44 #define O_READ          O_RDONLY
  45 #define O_WRITE         O_WRONLY
  46
  47 /* This is not included in the result of modes & O_ACCMODE */
  48 #define O_EXEC          0x0004
  49
  50 /* Open time flags */
  51 #define O_NOCTTY        0         /* We ignore this one */
  52 #define O_CREAT         0x0040
  53 #define O_EXCL          0x0080
  54 #define O_SHLOCK        0         /* files are always opened in shared mode,
  55                                         if not otherwise specified */
  56 #define O_EXLOCK        0x0100
  57 #define O_TRUNC         0x0200
  58
  59 /* Operating modes */
  60 #define O_APPEND        0x0400
  61 #define O_NONBLOCK      0x0800
  62 #define O_NDELAY        O_NONBLOCK  /* Alias */
  63 #define O_SYNC          0x1000
  64 #define O_FSYNC         O_SYNC      /* Alias */
  65 #define O_ASYNC         0x2000
  66 #define O_DSYNC         0x4000      /* Different from O_SYNC */
  67 #define O_RSYNC         0x8000      /* Read sync */
  68
  69 /* Values for the second argument to `fcntl'.  */
  70 #define F_DUPFD         0       /* Duplicate file descriptor.  */
  71 #define F_GETFD         1       /* Get file descriptor flags.  */
  72 #define F_SETFD         2       /* Set file descriptor flags.  */
  73 #define F_GETFL         3       /* Get file status flags.  */
  74 #define F_SETFL         4       /* Set file status flags.  */
  75 #define F_GETLK         5       /* Get record locking info.  */
  76 #define F_SETLK         6       /* Set record locking info (non-blocking).  */
  77 #define F_SETLKW        7       /* Set record locking info (blocking).  */
  78
  79 /* XXX missing */
  80 #define F_GETLK64       5       /* Get record locking info.  */
  81 #define F_SETLK64       6       /* Set record locking info (non-blocking).  */
  82 #define F_SETLKW64      7       /* Set record locking info (blocking).  */
  83
  84 # define F_SETOWN       8       /* Get owner of socket (receiver of SIGIO).  */
  85 # define F_GETOWN       9       /* Set owner of socket (receiver of SIGIO).  */
  86
  87 # define F_SETSIG       10      /* Set number of signal to be sent.  */
  88 # define F_GETSIG       11      /* Get number of signal to be sent.  */
  89
  90 /* For F_[GET|SET]FD.  */
  91 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
  92
  93 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
  94 #define F_RDLCK         0       /* Read lock.  */
  95 #define F_WRLCK         1       /* Write lock.  */
  96 #define F_UNLCK         2       /* Remove lock.  */
  97
  98 /* for old implementation of bsd flock () */
  99 #define F_EXLCK         4       /* or 3 */
 100 #define F_SHLCK         8       /* or 4 */
 101
 102 #ifdef __BSD_VISIBLE
 103 /* operations for bsd flock(), also used by the kernel implementation */
 104 # define LOCK_SH        1       /* shared lock */
 105 # define LOCK_EX        2       /* exclusive lock */
 106 # define LOCK_NB        4       /* or'd with one of the above to prevent
 107                                    blocking */
 108 # define LOCK_UN        8       /* remove lock */
 109 #endif
 110
 111 #if __POSIX_VERSION >= 200112
 112 #define POSIX_FADV_NORMAL       1
 113 #define POSIX_FADV_SEQUENTIAL   2
 114 #define POSIX_FADV_RANDOM       3
 115 #define POSIX_FADV_WILLNEED     4
 116 #define POSIX_FADV_DONTNEED     5
 117 #define POSIX_FADV_NOREUSE      6
 118 #endif
 119
 120 struct flock
 121 {
 122     short       l_type;     /* type of lock F_RDLCK, F_WRLCK, F_UNLCK */
 123     short       l_whence;   /* flag for starting offset */
 124     off_t       l_start;    /* starting offset */
 125     off_t       l_len;      /* size, if 0 then until EOF */
 126     pid_t       l_pid;      /* pid of process holding the lock. */
 127 };
 128
 129 /* Prototypes */
 130 __BEGIN_DECLS
 131
 132 int fcntl (int fd, int cmd, ...);
 133 int open  (const char * filename, int flags, ...);
 134 int creat (const char * filename, int mode);
 135
 136 #if __POSIX_VERSION >= 200112
 137 /* NOTIMPL int posix_fadvise(int fd, off_t offset, size_t len, int advice); */
 138 /* NOTIMPL int posix_fallocate(int fd, off_t offset, size_t len); */
 139 #endif
 140
 141 __END_DECLS
 142
 143 #endif /* _FCNTL_H_ */