Author: emaste
Date: Sun May 21 19:29:28 2017
New Revision: 318595
URL: https://svnweb.freebsd.org/changeset/base/318595
Log:
msdosfs: capitalize FAT appropriately
Diff reduction with NetBSD, including some nearby minor whitespace or
style fixes.
Obtained from: NetBSD
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/fs/msdosfs/denode.h
head/sys/fs/msdosfs/fat.h
head/sys/fs/msdosfs/msdosfs_denode.c
head/sys/fs/msdosfs/msdosfs_fat.c
head/sys/fs/msdosfs/msdosfs_vfsops.c
head/sys/fs/msdosfs/msdosfs_vnops.c
head/sys/fs/msdosfs/msdosfsmount.h
Modified: head/sys/fs/msdosfs/denode.h
==============================================================================
--- head/sys/fs/msdosfs/denode.h Sun May 21 17:07:12 2017
(r318594)
+++ head/sys/fs/msdosfs/denode.h Sun May 21 19:29:28 2017
(r318595)
@@ -98,7 +98,7 @@
#define MSDOSFSROOT_OFS 0x1fffffff
/*
- * The fat cache structure. fc_fsrcn is the filesystem relative cluster
+ * The FAT cache structure. fc_fsrcn is the filesystem relative cluster
* number that corresponds to the file relative cluster number in this
* structure (fc_frcn).
*/
@@ -108,11 +108,11 @@ struct fatcache {
};
/*
- * The fat entry cache as it stands helps make extending files a "quick"
- * operation by avoiding having to scan the fat to discover the last
+ * The FAT entry cache as it stands helps make extending files a "quick"
+ * operation by avoiding having to scan the FAT to discover the last
* cluster of the file. The cache also helps sequential reads by
* remembering the last cluster read from the file. This also prevents us
- * from having to rescan the fat to find the next cluster to read. This
+ * from having to rescan the FAT to find the next cluster to read. This
* cache is probably pretty worthless if a file is opened by multiple
* processes.
*/
@@ -126,7 +126,7 @@ struct fatcache {
#define FCE_EMPTY 0xffffffff /* doesn't represent an actual
cluster # */
/*
- * Set a slot in the fat cache.
+ * Set a slot in the FAT cache.
*/
#define fc_setcache(dep, slot, frcn, fsrcn) \
(dep)->de_fc[(slot)].fc_frcn = (frcn); \
@@ -156,7 +156,7 @@ struct denode {
u_short de_MDate; /* modification date */
u_long de_StartCluster; /* starting cluster of file */
u_long de_FileSize; /* size of file in bytes */
- struct fatcache de_fc[FC_SIZE]; /* fat cache */
+ struct fatcache de_fc[FC_SIZE]; /* FAT cache */
u_quad_t de_modrev; /* Revision level for lease. */
uint64_t de_inode; /* Inode number (really byte offset of
direntry) */
};
Modified: head/sys/fs/msdosfs/fat.h
==============================================================================
--- head/sys/fs/msdosfs/fat.h Sun May 21 17:07:12 2017 (r318594)
+++ head/sys/fs/msdosfs/fat.h Sun May 21 19:29:28 2017 (r318595)
@@ -66,10 +66,10 @@
/*
* MSDOSFS:
- * Return true if filesystem uses 12 bit fats. Microsoft Programmer's
+ * Return true if filesystem uses 12 bit FATs. Microsoft Programmer's
* Reference says if the maximum cluster number in a filesystem is greater
* than 4078 ((CLUST_RSRVS - CLUST_FIRST) & FAT12_MASK) then we've got a
- * 16 bit fat filesystem. While mounting, the result of this test is stored
+ * 16 bit FAT filesystem. While mounting, the result of this test is stored
* in pm_fatentrysize.
*/
#define FAT12(pmp) (pmp->pm_fatmask == FAT12_MASK)
@@ -83,8 +83,8 @@
* These are the values for the function argument to the function
* fatentry().
*/
-#define FAT_GET 0x0001 /* get a fat entry */
-#define FAT_SET 0x0002 /* set a fat entry */
+#define FAT_GET 0x0001 /* get a FAT entry */
+#define FAT_SET 0x0002 /* set a FAT entry */
#define FAT_GET_AND_SET (FAT_GET | FAT_SET)
/*
Modified: head/sys/fs/msdosfs/msdosfs_denode.c
==============================================================================
--- head/sys/fs/msdosfs/msdosfs_denode.c Sun May 21 17:07:12 2017
(r318594)
+++ head/sys/fs/msdosfs/msdosfs_denode.c Sun May 21 19:29:28 2017
(r318595)
@@ -160,7 +160,7 @@ deget(struct msdosfsmount *pmp, u_long d
ldep->de_diroffset = diroffset;
ldep->de_inode = inode;
lockmgr(nvp->v_vnlock, LK_EXCLUSIVE, NULL);
- fc_purge(ldep, 0); /* init the fat cache for this denode */
+ fc_purge(ldep, 0); /* init the FAT cache for this denode */
error = insmntque(nvp, mntp);
if (error != 0) {
free(ldep, M_MSDOSFSNODE);
Modified: head/sys/fs/msdosfs/msdosfs_fat.c
==============================================================================
--- head/sys/fs/msdosfs/msdosfs_fat.c Sun May 21 17:07:12 2017
(r318594)
+++ head/sys/fs/msdosfs/msdosfs_fat.c Sun May 21 19:29:28 2017
(r318595)
@@ -176,8 +176,8 @@ pcbmap(struct denode *dep, u_long findcn
*sp = pmp->pm_bpcluster;
/*
- * Rummage around in the fat cache, maybe we can avoid tromping
- * through every fat entry for the file. And, keep track of how far
+ * Rummage around in the FAT cache, maybe we can avoid tromping
+ * through every FAT entry for the file. And, keep track of how far
* off the cache was from where we wanted to be.
*/
i = 0;
@@ -244,13 +244,13 @@ hiteof:;
*cnp = i;
if (bp)
brelse(bp);
- /* update last file cluster entry in the fat cache */
+ /* update last file cluster entry in the FAT cache */
fc_setcache(dep, FC_LASTFC, i - 1, prevcn);
return (E2BIG);
}
/*
- * Find the closest entry in the fat cache to the cluster we are looking
+ * Find the closest entry in the FAT cache to the cluster we are looking
* for.
*/
static void
@@ -276,7 +276,7 @@ fc_lookup(struct denode *dep, u_long fin
}
/*
- * Purge the fat cache in denode dep of all entries relating to file
+ * Purge the FAT cache in denode dep of all entries relating to file
* relative cluster frcn and beyond.
*/
void
@@ -295,13 +295,13 @@ fc_purge(struct denode *dep, u_int frcn)
}
/*
- * Update the fat.
- * If mirroring the fat, update all copies, with the first copy as last.
- * Else update only the current fat (ignoring the others).
+ * Update the FAT.
+ * If mirroring the FAT, update all copies, with the first copy as last.
+ * Else update only the current FAT (ignoring the others).
*
* pmp - msdosfsmount structure for filesystem to update
- * bp - addr of modified fat block
- * fatbn - block number relative to begin of filesystem of the modified fat
block.
+ * bp - addr of modified FAT block
+ * fatbn - block number relative to begin of filesystem of the modified FAT
block.
*/
static void
updatefats(struct msdosfsmount *pmp, struct buf *bp, u_long fatbn)
@@ -315,12 +315,12 @@ updatefats(struct msdosfsmount *pmp, str
if (pmp->pm_flags & MSDOSFS_FATMIRROR) {
/*
- * Now copy the block(s) of the modified fat to the other
copies of
- * the fat and write them out. This is faster than reading in
the
- * other fats and then writing them back out. This could tie up
- * the fat for quite a while. Preventing others from accessing
it.
- * To prevent us from going after the fat quite so much we use
- * delayed writes, unless they specfied "synchronous" when the
+ * Now copy the block(s) of the modified FAT to the other
copies of
+ * the FAT and write them out. This is faster than reading in
the
+ * other FATs and then writing them back out. This could tie up
+ * the FAT for quite a while. Preventing others from accessing
it.
+ * To prevent us from going after the FAT quite so much we use
+ * delayed writes, unless they specified "synchronous" when the
* filesystem was mounted. If synch is asked for then use
* bwrite()'s and really slow things down.
*/
@@ -349,7 +349,7 @@ updatefats(struct msdosfsmount *pmp, str
}
/*
- * Write out the first (or current) fat last.
+ * Write out the first (or current) FAT last.
*/
if (pmp->pm_mountp->mnt_flag & MNT_SYNCHRONOUS)
bwrite(bp);
@@ -358,7 +358,7 @@ updatefats(struct msdosfsmount *pmp, str
}
/*
- * Updating entries in 12 bit fats is a pain in the butt.
+ * Updating entries in 12 bit FATs is a pain in the butt.
*
* The following picture shows where nibbles go when moving from a 12 bit
* cluster number into the appropriate bytes in the FAT.
@@ -436,21 +436,21 @@ clusterfree(struct msdosfsmount *pmp, u_
}
/*
- * Get or Set or 'Get and Set' the cluster'th entry in the fat.
+ * Get or Set or 'Get and Set' the cluster'th entry in the FAT.
*
- * function - whether to get or set a fat entry
+ * function - whether to get or set a FAT entry
* pmp - address of the msdosfsmount structure for the filesystem
- * whose fat is to be manipulated.
+ * whose FAT is to be manipulated.
* cn - which cluster is of interest
* oldcontents - address of a word that is to receive the contents of the
* cluster'th entry if this is a get function
* newcontents - the new value to be written into the cluster'th element of
- * the fat if this is a set function.
+ * the FAT if this is a set function.
*
- * This function can also be used to free a cluster by setting the fat entry
+ * This function can also be used to free a cluster by setting the FAT entry
* for a cluster to 0.
*
- * All copies of the fat are updated if this is a set function. NOTE: If
+ * All copies of the FAT are updated if this is a set function. NOTE: If
* fatentry() marks a cluster as free it does not update the inusemap in
* the msdosfsmount structure. This is left to the caller.
*/
@@ -513,7 +513,7 @@ fatentry(int function, struct msdosfsmou
if (FAT12(pmp) & (cn & 1))
readcn >>= 4;
readcn &= pmp->pm_fatmask;
- /* map reserved fat entries to same values for all fats */
+ /* map reserved FAT entries to same values for all FATs */
if ((readcn | ~pmp->pm_fatmask) >= CLUST_RSRVD)
readcn |= ~pmp->pm_fatmask;
*oldcontents = readcn;
@@ -537,7 +537,7 @@ fatentry(int function, struct msdosfsmou
case FAT32_MASK:
/*
* According to spec we have to retain the
- * high order bits of the fat entry.
+ * high order bits of the FAT entry.
*/
readcn = getulong(&bp->b_data[bo]);
readcn &= ~FAT32_MASK;
@@ -560,7 +560,7 @@ fatentry(int function, struct msdosfsmou
* pmp - mount point
* start - first cluster of chain
* count - number of clusters in chain
- * fillwith - what to write into fat entry of last cluster
+ * fillwith - what to write into FAT entry of last cluster
*/
static int
fatchain(struct msdosfsmount *pmp, u_long start, u_long count, u_long fillwith)
@@ -685,7 +685,7 @@ chainlength(struct msdosfsmount *pmp, u_
* pmp - mount point.
* start - start of cluster chain.
* count - number of clusters to allocate.
- * fillwith - put this value into the fat entry for the
+ * fillwith - put this value into the FAT entry for the
* last allocated cluster.
* retcluster - put the first allocated cluster's number here.
* got - how many clusters were actually allocated.
@@ -730,7 +730,7 @@ chainalloc(struct msdosfsmount *pmp, u_l
* pmp - mount point.
* start - preferred start of cluster chain.
* count - number of clusters requested.
- * fillwith - put this value into the fat entry for the
+ * fillwith - put this value into the FAT entry for the
* last allocated cluster.
* retcluster - put the first allocated cluster's number here.
* got - how many clusters were actually allocated.
@@ -882,7 +882,7 @@ freeclusterchain(struct msdosfsmount *pm
}
/*
- * Read in fat blocks looking for free clusters. For every free cluster
+ * Read in FAT blocks looking for free clusters. For every free cluster
* found turn off its corresponding bit in the pm_inusemap.
*/
int
@@ -896,7 +896,7 @@ fillinusemap(struct msdosfsmount *pmp)
MSDOSFS_ASSERT_MP_LOCKED(pmp);
/*
- * Mark all clusters in use, we mark the free ones in the fat scan
+ * Mark all clusters in use, we mark the free ones in the FAT scan
* loop further down.
*/
for (cn = 0; cn < (pmp->pm_maxcluster + N_INUSEBITS) / N_INUSEBITS;
cn++)
@@ -904,7 +904,7 @@ fillinusemap(struct msdosfsmount *pmp)
/*
* Figure how many free clusters are in the filesystem by ripping
- * through the fat counting the number of entries whose content is
+ * through the FAT counting the number of entries whose content is
* zero. These represent free clusters.
*/
pmp->pm_freeclustercount = 0;
@@ -1042,8 +1042,8 @@ extendfile(struct denode *dep, u_long co
}
/*
- * Update the "last cluster of the file" entry in the denode's
fat
- * cache.
+ * Update the "last cluster of the file" entry in the
+ * denode's FAT cache.
*/
fc_setcache(dep, FC_LASTFC, frcn + got - 1, cn + got - 1);
Modified: head/sys/fs/msdosfs/msdosfs_vfsops.c
==============================================================================
--- head/sys/fs/msdosfs/msdosfs_vfsops.c Sun May 21 17:07:12 2017
(r318594)
+++ head/sys/fs/msdosfs/msdosfs_vfsops.c Sun May 21 19:29:28 2017
(r318595)
@@ -604,7 +604,7 @@ mountmsdosfs(struct vnode *devvp, struct
<= ((CLUST_RSRVD - CLUST_FIRST) & FAT12_MASK)) {
/*
* This will usually be a floppy disk. This size makes
- * sure that one fat entry will not be split across
+ * sure that one FAT entry will not be split across
* multiple blocks.
*/
pmp->pm_fatmask = FAT12_MASK;
@@ -717,9 +717,9 @@ mountmsdosfs(struct vnode *devvp, struct
goto error_exit;
/*
- * If they want fat updates to be synchronous then let them suffer
+ * If they want FAT updates to be synchronous then let them suffer
* the performance degradation in exchange for the on disk copy of
- * the fat being correct just about all the time. I suppose this
+ * the FAT being correct just about all the time. I suppose this
* would be a good thing to turn on if the kernel is still flakey.
*/
if (mp->mnt_flag & MNT_SYNCHRONOUS)
@@ -925,14 +925,14 @@ msdosfs_sync(struct mount *mp, int waitf
td = curthread;
/*
- * If we ever switch to not updating all of the fats all the time,
+ * If we ever switch to not updating all of the FATs all the time,
* this would be the place to update them from the first one.
*/
if (pmp->pm_fmod != 0) {
if (pmp->pm_flags & MSDOSFSMNT_RONLY)
panic("msdosfs_sync: rofs mod");
else {
- /* update fats here */
+ /* update FATs here */
}
}
/*
Modified: head/sys/fs/msdosfs/msdosfs_vnops.c
==============================================================================
--- head/sys/fs/msdosfs/msdosfs_vnops.c Sun May 21 17:07:12 2017
(r318594)
+++ head/sys/fs/msdosfs/msdosfs_vnops.c Sun May 21 19:29:28 2017
(r318595)
@@ -736,7 +736,7 @@ msdosfs_write(struct vop_write_args *ap)
vfs_bio_clrbuf(bp);
/*
* Do the bmap now, since pcbmap needs buffers
- * for the fat table. (see msdosfs_strategy)
+ * for the FAT table. (see msdosfs_strategy)
*/
if (bp->b_blkno == bp->b_lblkno) {
error = pcbmap(dep, bp->b_lblkno, &bn, 0, 0);
Modified: head/sys/fs/msdosfs/msdosfsmount.h
==============================================================================
--- head/sys/fs/msdosfs/msdosfsmount.h Sun May 21 17:07:12 2017
(r318594)
+++ head/sys/fs/msdosfs/msdosfsmount.h Sun May 21 19:29:28 2017
(r318595)
@@ -65,7 +65,7 @@ MALLOC_DECLARE(M_MSDOSFSMNT);
struct msdosfs_fileno;
/*
- * Layout of the mount control block for a msdos filesystem.
+ * Layout of the mount control block for a MSDOSFS filesystem.
*/
struct msdosfsmount {
struct mount *pm_mountp;/* vfs mount struct for this fs */
@@ -73,7 +73,7 @@ struct msdosfsmount {
struct bufobj *pm_bo;
uid_t pm_uid; /* uid to set as owner of the files */
gid_t pm_gid; /* gid to set as owner of the files */
- mode_t pm_mask; /* mask to and with file protection bits
+ mode_t pm_mask; /* mask to and with file protection bits
for files */
mode_t pm_dirmask; /* mask to and with file protection bits
for directories */
@@ -81,7 +81,7 @@ struct msdosfsmount {
struct cdev *pm_dev; /* character device mounted */
struct bpb50 pm_bpb; /* BIOS parameter blk for this fs */
u_long pm_BlkPerSec; /* How many DEV_BSIZE blocks fit inside a
physical sector */
- u_long pm_FATsecs; /* actual number of fat sectors */
+ u_long pm_FATsecs; /* actual number of FAT sectors */
u_long pm_fatblk; /* block # of first FAT */
u_long pm_rootdirblk; /* block # (cluster # for FAT32) of root
directory number */
u_long pm_rootdirsize; /* size in blocks (not clusters) */
@@ -93,15 +93,15 @@ struct msdosfsmount {
u_long pm_bnshift; /* shift file offset right this amount to get a
block number */
u_long pm_bpcluster; /* bytes per cluster */
u_long pm_fmod; /* ~0 if fs is modified, this can rollover to 0
*/
- u_long pm_fatblocksize; /* size of fat blocks in bytes */
- u_long pm_fatblocksec; /* size of fat blocks in sectors */
- u_long pm_fatsize; /* size of fat in bytes */
- uint32_t pm_fatmask; /* mask to use for fat numbers */
+ u_long pm_fatblocksize; /* size of FAT blocks in bytes */
+ u_long pm_fatblocksec; /* size of FAT blocks in sectors */
+ u_long pm_fatsize; /* size of FAT in bytes */
+ uint32_t pm_fatmask; /* mask to use for FAT numbers */
u_long pm_fsinfo; /* fsinfo block number */
u_long pm_nxtfree; /* next place to search for a free cluster */
- u_int pm_fatmult; /* these 2 values are used in fat */
+ u_int pm_fatmult; /* these 2 values are used in FAT */
u_int pm_fatdiv; /* offset computation */
- u_int pm_curfat; /* current fat for FAT32 (0 otherwise) */
+ u_int pm_curfat; /* current FAT for FAT32 (0 otherwise) */
u_int *pm_inusemap; /* ptr to bitmap of in-use clusters */
uint64_t pm_flags; /* see below */
void *pm_u2w; /* Local->Unicode iconv handle */
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