1 module core.sys.linux.fcntl; 2 3 public import core.sys.posix.fcntl; 4 5 version (linux): 6 extern(C): 7 nothrow: 8 9 // From linux/falloc.h 10 /// fallocate(2) params 11 enum { 12 /// Allocates and initializes to zero the disk space 13 /// within the specified range, but the file size 14 /// will not be modified. 15 FALLOC_FL_KEEP_SIZE = 0x01, 16 /// Deallocates space (i.e. creates a hole) 17 FALLOC_FL_PUNCH_HOLE = 0x02, 18 /// Newly allocated blocks will be marked as initialized. 19 FALLOC_FL_NO_HIDE_STALE = 0x04, 20 /// Removes a byte range from a file, without leaving a hole 21 FALLOC_FL_COLLAPSE_RANGE = 0x08, 22 /// Zeroes space in the specified byte range 23 FALLOC_FL_ZERO_RANGE = 0x10, 24 /// Increases the file space by inserting a hole 25 /// without overwriting any existing data 26 FALLOC_FL_INSERT_RANGE = 0x20, 27 /// Used to unshare shared blocks within 28 /// the file size without overwriting any existing data 29 FALLOC_FL_UNSHARE_RANGE = 0x40 30 } 31 32 // From asm-generic/fcntl.h 33 /** 34 35 Open File Description locks 36 37 Usually record locks held by a process are released on *any* close and are 38 not inherited across a fork(). 39 40 These cmd values will set locks that conflict with process-associated 41 record locks, but are "owned" by the open file description, not the 42 process. This means that they are inherited across fork() like BSD (flock) 43 locks, and they are only released automatically when the last reference to 44 the open file against which they were acquired is put. 45 46 */ 47 enum 48 { 49 /// Queries the system if the lock could be placed 50 F_OFD_GETLK = 36, 51 /// Acquires or releases an open file description lock 52 F_OFD_SETLK = 37, 53 /// Same as F_OFD_SETLK, but waits if a conflicting lock is held on the file 54 F_OFD_SETLKW = 38 55 } 56 57 // Linux-specific fallocate 58 // (http://man7.org/linux/man-pages/man2/fallocate.2.html) 59 int fallocate(int fd, int mode, off_t offset, off_t len);