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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/hpfs/dentry.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/hpfs/dentry.c')
-rw-r--r-- | fs/hpfs/dentry.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/fs/hpfs/dentry.c b/fs/hpfs/dentry.c new file mode 100644 index 000000000000..08319126b2af --- /dev/null +++ b/fs/hpfs/dentry.c @@ -0,0 +1,60 @@ +/* + * linux/fs/hpfs/dentry.c + * + * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999 + * + * dcache operations + */ + +#include "hpfs_fn.h" + +/* + * Note: the dentry argument is the parent dentry. + */ + +static int hpfs_hash_dentry(struct dentry *dentry, struct qstr *qstr) +{ + unsigned long hash; + int i; + unsigned l = qstr->len; + + if (l == 1) if (qstr->name[0]=='.') goto x; + if (l == 2) if (qstr->name[0]=='.' || qstr->name[1]=='.') goto x; + hpfs_adjust_length((char *)qstr->name, &l); + /*if (hpfs_chk_name((char *)qstr->name,&l))*/ + /*return -ENAMETOOLONG;*/ + /*return -ENOENT;*/ + x: + + hash = init_name_hash(); + for (i = 0; i < l; i++) + hash = partial_name_hash(hpfs_upcase(hpfs_sb(dentry->d_sb)->sb_cp_table,qstr->name[i]), hash); + qstr->hash = end_name_hash(hash); + + return 0; +} + +static int hpfs_compare_dentry(struct dentry *dentry, struct qstr *a, struct qstr *b) +{ + unsigned al=a->len; + unsigned bl=b->len; + hpfs_adjust_length((char *)a->name, &al); + /*hpfs_adjust_length((char *)b->name, &bl);*/ + /* 'a' is the qstr of an already existing dentry, so the name + * must be valid. 'b' must be validated first. + */ + + if (hpfs_chk_name((char *)b->name, &bl)) return 1; + if (hpfs_compare_names(dentry->d_sb, (char *)a->name, al, (char *)b->name, bl, 0)) return 1; + return 0; +} + +static struct dentry_operations hpfs_dentry_operations = { + .d_hash = hpfs_hash_dentry, + .d_compare = hpfs_compare_dentry, +}; + +void hpfs_set_dentry_operations(struct dentry *dentry) +{ + dentry->d_op = &hpfs_dentry_operations; +} |