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msdosfs: mark unused compat-mount fields

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The magic number MSDOSFS_ARGSMAGIC, which used to distinguish
"old" vs "new" msdosfs mount arguments, has not been used since
2005; it should just go away now.

Likewise, the local-to-Unicode table that changed at the same
time is unused.

Leave the space reserved in the old style mount arguments, though,
since we still support the old mount call (via the cmount entry
point).

Submitted by:	Chris Torek <chris.torek@gmail.com>
MFC after:	2 weeks
This commit is contained in:
Konstantin Belousov 2015-03-22 09:09:26 +00:00
parent 75fa40f89c
commit c66d17c7bc
1 changed files with 2 additions and 4 deletions
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6
sys/fs/msdosfs/msdosfsmount.h
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@ -239,8 +239,8 @@ struct msdosfs_args {
gid_t gid; /* gid that owns msdosfs files */
mode_t mask; /* file mask to be applied for msdosfs perms */
int flags; /* see below */
int magic; /* version number */
u_int16_t u2w[128]; /* Local->Unicode table */
int unused1; /* unused, was version number */
u_int16_t unused2[128]; /* no longer used, was Local->Unicode table */
char *cs_win; /* Windows(Unicode) Charset */
char *cs_dos; /* DOS Charset */
char *cs_local; /* Local Charset */
@ -264,6 +264,4 @@ struct msdosfs_args {
#define MSDOSFS_LARGEFS 0x10000000 /* perform fileno mapping */
#define MSDOSFS_FSIMOD 0x01000000
#define MSDOSFS_ARGSMAGIC 0xe4eff300
#endif /* !_MSDOSFS_MSDOSFSMOUNT_H_ */