include/linux/falloc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _FALLOC_H_
   3 #define _FALLOC_H_
   4
   5 #include <uapi/linux/falloc.h>
   6
   7
   8 /*
   9  * Space reservation ioctls and argument structure
  10  * are designed to be compatible with the legacy XFS ioctls.
  11  */
  12 struct space_resv {
  13         __s16           l_type;
  14         __s16           l_whence;
  15         __s64           l_start;
  16         __s64           l_len;          /* len == 0 means until end of file */
  17         __s32           l_sysid;
  18         __u32           l_pid;
  19         __s32           l_pad[4];       /* reserved area */
  20 };
  21
  22 #define FS_IOC_RESVSP           _IOW('X', 40, struct space_resv)
  23 #define FS_IOC_UNRESVSP         _IOW('X', 41, struct space_resv)
  24 #define FS_IOC_RESVSP64         _IOW('X', 42, struct space_resv)
  25 #define FS_IOC_UNRESVSP64       _IOW('X', 43, struct space_resv)
  26 #define FS_IOC_ZERO_RANGE       _IOW('X', 57, struct space_resv)
  27
  28 #define FALLOC_FL_SUPPORTED_MASK        (FALLOC_FL_KEEP_SIZE |          \
  29                                          FALLOC_FL_PUNCH_HOLE |         \
  30                                          FALLOC_FL_COLLAPSE_RANGE |     \
  31                                          FALLOC_FL_ZERO_RANGE |         \
  32                                          FALLOC_FL_INSERT_RANGE |       \
  33                                          FALLOC_FL_UNSHARE_RANGE)
  34
  35 /* on ia32 l_start is on a 32-bit boundary */
  36 #if defined(CONFIG_X86_64)
  37 struct space_resv_32 {
  38         __s16           l_type;
  39         __s16           l_whence;
  40         __s64           l_start __attribute__((packed));
  41                         /* len == 0 means until end of file */
  42         __s64           l_len __attribute__((packed));
  43         __s32           l_sysid;
  44         __u32           l_pid;
  45         __s32           l_pad[4];       /* reserve area */
  46 };
  47
  48 #define FS_IOC_RESVSP_32        _IOW ('X', 40, struct space_resv_32)
  49 #define FS_IOC_UNRESVSP_32      _IOW ('X', 41, struct space_resv_32)
  50 #define FS_IOC_RESVSP64_32      _IOW ('X', 42, struct space_resv_32)
  51 #define FS_IOC_UNRESVSP64_32    _IOW ('X', 43, struct space_resv_32)
  52 #define FS_IOC_ZERO_RANGE_32    _IOW ('X', 57, struct space_resv_32)
  53
  54 int compat_ioctl_preallocate(struct file *, int, struct space_resv_32 __user *);
  55
  56 #endif
  57
  58 #endif /* _FALLOC_H_ */