Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  linux/fs/minix/namei.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Copyright (C) 1991, 1992  Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include "minix.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) static int add_nondir(struct dentry *dentry, struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 	int err = minix_add_link(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 	if (!err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 		d_instantiate(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	inode_dec_link_count(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) static struct dentry *minix_lookup(struct inode * dir, struct dentry *dentry, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	struct inode * inode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	ino_t ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	if (dentry->d_name.len > minix_sb(dir->i_sb)->s_namelen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 		return ERR_PTR(-ENAMETOOLONG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	ino = minix_inode_by_name(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	if (ino)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 		inode = minix_iget(dir->i_sb, ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	return d_splice_alias(inode, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static int minix_mknod(struct inode * dir, struct dentry *dentry, umode_t mode, dev_t rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	if (!old_valid_dev(rdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	inode = minix_new_inode(dir, mode, &error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	if (inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		minix_set_inode(inode, rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		mark_inode_dirty(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		error = add_nondir(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) static int minix_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	struct inode *inode = minix_new_inode(dir, mode, &error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	if (inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		minix_set_inode(inode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		mark_inode_dirty(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		d_tmpfile(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) static int minix_create(struct inode *dir, struct dentry *dentry, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		bool excl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	return minix_mknod(dir, dentry, mode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) static int minix_symlink(struct inode * dir, struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	  const char * symname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	int err = -ENAMETOOLONG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	int i = strlen(symname)+1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	struct inode * inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	if (i > dir->i_sb->s_blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	inode = minix_new_inode(dir, S_IFLNK | 0777, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	if (!inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	minix_set_inode(inode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	err = page_symlink(inode, symname, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		goto out_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	err = add_nondir(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) out_fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	inode_dec_link_count(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static int minix_link(struct dentry * old_dentry, struct inode * dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	struct inode *inode = d_inode(old_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	inode_inc_link_count(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	ihold(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	return add_nondir(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static int minix_mkdir(struct inode * dir, struct dentry *dentry, umode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	struct inode * inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	inode_inc_link_count(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	inode = minix_new_inode(dir, S_IFDIR | mode, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	if (!inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		goto out_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	minix_set_inode(inode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	inode_inc_link_count(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	err = minix_make_empty(inode, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		goto out_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	err = minix_add_link(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		goto out_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	d_instantiate(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) out_fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	inode_dec_link_count(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	inode_dec_link_count(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) out_dir:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	inode_dec_link_count(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static int minix_unlink(struct inode * dir, struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	int err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	struct inode * inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	struct page * page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	struct minix_dir_entry * de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	de = minix_find_entry(dentry, &page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	if (!de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		goto end_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	err = minix_delete_entry(de, page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		goto end_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	inode->i_ctime = dir->i_ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	inode_dec_link_count(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) end_unlink:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static int minix_rmdir(struct inode * dir, struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	struct inode * inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	int err = -ENOTEMPTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	if (minix_empty_dir(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		err = minix_unlink(dir, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		if (!err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			inode_dec_link_count(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 			inode_dec_link_count(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static int minix_rename(struct inode * old_dir, struct dentry *old_dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 			struct inode * new_dir, struct dentry *new_dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 			unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	struct inode * old_inode = d_inode(old_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	struct inode * new_inode = d_inode(new_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	struct page * dir_page = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	struct minix_dir_entry * dir_de = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	struct page * old_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	struct minix_dir_entry * old_de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	int err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	if (flags & ~RENAME_NOREPLACE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	old_de = minix_find_entry(old_dentry, &old_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (!old_de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	if (S_ISDIR(old_inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		dir_de = minix_dotdot(old_inode, &dir_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		if (!dir_de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 			goto out_old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	if (new_inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		struct page * new_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		struct minix_dir_entry * new_de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		err = -ENOTEMPTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		if (dir_de && !minix_empty_dir(new_inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 			goto out_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		new_de = minix_find_entry(new_dentry, &new_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		if (!new_de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 			goto out_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		minix_set_link(new_de, new_page, old_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		new_inode->i_ctime = current_time(new_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		if (dir_de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 			drop_nlink(new_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		inode_dec_link_count(new_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		err = minix_add_link(new_dentry, old_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 			goto out_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		if (dir_de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 			inode_inc_link_count(new_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	minix_delete_entry(old_de, old_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	mark_inode_dirty(old_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	if (dir_de) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		minix_set_link(dir_de, dir_page, new_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		inode_dec_link_count(old_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) out_dir:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	if (dir_de) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		kunmap(dir_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		put_page(dir_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) out_old:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	kunmap(old_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	put_page(old_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)  * directories can handle most operations...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) const struct inode_operations minix_dir_inode_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	.create		= minix_create,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	.lookup		= minix_lookup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	.link		= minix_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	.unlink		= minix_unlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	.symlink	= minix_symlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	.mkdir		= minix_mkdir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	.rmdir		= minix_rmdir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	.mknod		= minix_mknod,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	.rename		= minix_rename,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	.getattr	= minix_getattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	.tmpfile	= minix_tmpfile,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) };