sqlite3/os_aros.h

   1 /*
   2 ** 2004 May 22
   3 **
   4 ** The author disclaims copyright to this source code.  In place of
   5 ** a legal notice, here is a blessing:
   6 **
   7 **    May you do good and not evil.
   8 **    May you find forgiveness for yourself and forgive others.
   9 **    May you share freely, never taking more than you give.
  10 **
  11 ******************************************************************************
  12 **
  13 ** This header file defined OS-specific features for Unix.
  14 */
  15 #ifndef _SQLITE_OS_AROS_H_
  16 #define _SQLITE_OS_AROS_H_
  17
  18 /*
  19 ** Helpful hint:  To get this to compile on HP/UX, add -D_INCLUDE_POSIX_SOURCE
  20 ** to the compiler command line.
  21 */
  22
  23 /*
  24 ** These #defines should enable >2GB file support on Posix if the
  25 ** underlying operating system supports it.  If the OS lacks
  26 ** large file support, or if the OS is windows, these should be no-ops.
  27 **
  28 ** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch
  29 ** on the compiler command line.  This is necessary if you are compiling
  30 ** on a recent machine (ex: RedHat 7.2) but you want your code to work
  31 ** on an older machine (ex: RedHat 6.0).  If you compile on RedHat 7.2
  32 ** without this option, LFS is enable.  But LFS does not exist in the kernel
  33 ** in RedHat 6.0, so the code won't work.  Hence, for maximum binary
  34 ** portability you should omit LFS.
  35 **
  36 ** Similar is true for MacOS.  LFS is only supported on MacOS 9 and later.
  37 */
  38 #ifndef SQLITE_DISABLE_LFS
  39 # define _LARGE_FILE       1
  40 # ifndef _FILE_OFFSET_BITS
  41 #   define _FILE_OFFSET_BITS 64
  42 # endif
  43 # define _LARGEFILE_SOURCE 1
  44 #endif
  45
  46 /*
  47 ** standard include files.
  48 */
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51 #include <fcntl.h>
  52 #include <unistd.h>
  53
  54 /*
  55 ** The OsFile structure is a operating-system independing representation
  56 ** of an open file handle.  It is defined differently for each architecture.
  57 **
  58 ** This is the definition for Unix.
  59 **
  60 ** OsFile.locktype takes one of the values SHARED_LOCK, RESERVED_LOCK,
  61 ** PENDING_LOCK or EXCLUSIVE_LOCK.
  62 */
  63 typedef struct OsFile OsFile;
  64 struct OsFile {
  65         struct Pager *pPager;     /* The pager that owns this OsFile. Might be 0 */
  66         struct openCnt *pOpen;    /* Info about all open fd's on this inode */
  67         struct lockInfo *pLock;   /* Info about locks on this inode */
  68         int h;                    /* The file descriptor */
  69         unsigned char locktype;   /* The type of lock held on this fd */
  70         BOOL isOpen;              /* True if needs to be closed */
  71         BOOL fullSync;            /* Use F_FULLSYNC if available */
  72         int dirfd;                /* File descriptor for the directory */
  73 };
  74
  75 /*
  76 ** A macro to set the OsFile.fullSync flag, if it exists.
  77 */
  78 #define SET_FULLSYNC(x,y)  ((x).fullSync = (y))
  79
  80 /*
  81 ** Maximum number of characters in a temporary file name
  82 */
  83 #define SQLITE_TEMPNAME_SIZE 200
  84
  85 /*
  86 ** Minimum interval supported by sqlite3OsSleep().
  87 */
  88 #if defined(HAVE_USLEEP) && HAVE_USLEEP
  89 # define SQLITE_MIN_SLEEP_MS 1
  90 #else
  91 # define SQLITE_MIN_SLEEP_MS 1000
  92 #endif
  93
  94 /*
  95 ** Default permissions when creating a new file
  96 */
  97 #ifndef SQLITE_DEFAULT_FILE_PERMISSIONS
  98 # define SQLITE_DEFAULT_FILE_PERMISSIONS 0644
  99 #endif
 100
 101
 102 #endif /* _SQLITE_OS_AROS_H_ */