Hi all,

I'm having rather large brain fart and my google-fu is on the fritz today. I'm looking for the module to use that will give me access to the constants in linux/fs.h header file. The following chunk of the fs.h is what I'm interested in.

/* the read-only stuff doesn't really belong here, but any other place
+ is
   probably as bad and I don't want to create yet another include file
+. */

#define BLKROSET   _IO(0x12,93) /* set device read-only (0 = read-writ
+e) */
#define BLKROGET   _IO(0x12,94) /* get read-only status (0 = read_writ
+e) */
#define BLKRRPART  _IO(0x12,95) /* re-read partition table */
#define BLKGETSIZE _IO(0x12,96) /* return device size /512 (long *arg)
+ */
#define BLKFLSBUF  _IO(0x12,97) /* flush buffer cache */
#define BLKRASET   _IO(0x12,98) /* set read ahead for block device */
#define BLKRAGET   _IO(0x12,99) /* get current read ahead setting */
#define BLKFRASET  _IO(0x12,100)/* set filesystem (mm/filemap.c) read-
+ahead */
#define BLKFRAGET  _IO(0x12,101)/* get filesystem (mm/filemap.c) read-
+ahead */
#define BLKSECTSET _IO(0x12,102)/* set max sectors per request (ll_rw_
+blk.c) */
#define BLKSECTGET _IO(0x12,103)/* get max sectors per request (ll_rw_
+blk.c) */
#define BLKSSZGET  _IO(0x12,104)/* get block device sector size */
#if 0
#define BLKPG      _IO(0x12,105)/* See blkpg.h */

/* Some people are morons.  Do not use sizeof! */

#define BLKELVGET  _IOR(0x12,106,size_t)/* elevator get */
#define BLKELVSET  _IOW(0x12,107,size_t)/* elevator set */
/* This was here just to show that the number is taken -
   probably all these _IO(0x12,*) ioctls should be moved to blkpg.h. *
+/
#endif
/* A jump here: 108-111 have been used for various private purposes. *
+/
#define BLKBSZGET  _IOR(0x12,112,size_t)
#define BLKBSZSET  _IOW(0x12,113,size_t)
#define BLKGETSIZE64 _IOR(0x12,114,size_t)  /* return device size in b
+ytes (u64 *arg) */
#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
#define BLKTRACESTART _IO(0x12,116)
#define BLKTRACESTOP _IO(0x12,117)
#define BLKTRACETEARDOWN _IO(0x12,118)
#define BLKDISCARD _IO(0x12,119)
#define BLKIOMIN _IO(0x12,120)
#define BLKIOOPT _IO(0x12,121)
#define BLKALIGNOFF _IO(0x12,122)
#define BLKPBSZGET _IO(0x12,123)
#define BLKDISCARDZEROES _IO(0x12,124)
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