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62 lines
1.4 KiB
62 lines
1.4 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* linux/fs/hpfs/dentry.c |
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* |
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* Mikulas Patocka ([email protected]), 1998-1999 |
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* |
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* dcache operations |
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*/ |
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#include "hpfs_fn.h" |
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/* |
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* Note: the dentry argument is the parent dentry. |
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*/ |
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static int hpfs_hash_dentry(const struct dentry *dentry, struct qstr *qstr) |
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{ |
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unsigned long hash; |
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int i; |
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unsigned l = qstr->len; |
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if (l == 1) if (qstr->name[0]=='.') goto x; |
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if (l == 2) if (qstr->name[0]=='.' || qstr->name[1]=='.') goto x; |
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hpfs_adjust_length(qstr->name, &l); |
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/*if (hpfs_chk_name(qstr->name,&l))*/ |
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/*return -ENAMETOOLONG;*/ |
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/*return -ENOENT;*/ |
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x: |
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hash = init_name_hash(dentry); |
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for (i = 0; i < l; i++) |
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hash = partial_name_hash(hpfs_upcase(hpfs_sb(dentry->d_sb)->sb_cp_table,qstr->name[i]), hash); |
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qstr->hash = end_name_hash(hash); |
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return 0; |
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} |
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static int hpfs_compare_dentry(const struct dentry *dentry, |
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unsigned int len, const char *str, const struct qstr *name) |
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{ |
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unsigned al = len; |
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unsigned bl = name->len; |
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hpfs_adjust_length(str, &al); |
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/*hpfs_adjust_length(b->name, &bl);*/ |
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/* |
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* 'str' is the nane of an already existing dentry, so the name |
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* must be valid. 'name' must be validated first. |
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*/ |
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if (hpfs_chk_name(name->name, &bl)) |
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return 1; |
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if (hpfs_compare_names(dentry->d_sb, str, al, name->name, bl, 0)) |
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return 1; |
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return 0; |
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} |
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const struct dentry_operations hpfs_dentry_operations = { |
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.d_hash = hpfs_hash_dentry, |
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.d_compare = hpfs_compare_dentry, |
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};
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