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/hpfs/inode.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *  inode VFS functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/user_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include "hpfs_fn.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) void hpfs_init_inode(struct inode *i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 	struct super_block *sb = i->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	i->i_uid = hpfs_sb(sb)->sb_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	i->i_gid = hpfs_sb(sb)->sb_gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	i->i_mode = hpfs_sb(sb)->sb_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	i->i_size = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	i->i_blocks = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	hpfs_inode->i_dno = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	hpfs_inode->i_n_secs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	hpfs_inode->i_file_sec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	hpfs_inode->i_disk_sec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	hpfs_inode->i_dpos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	hpfs_inode->i_dsubdno = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	hpfs_inode->i_ea_mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	hpfs_inode->i_ea_uid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	hpfs_inode->i_ea_gid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	hpfs_inode->i_ea_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	hpfs_inode->i_rddir_off = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	hpfs_inode->i_dirty = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	i->i_atime.tv_sec = i->i_atime.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) void hpfs_read_inode(struct inode *i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct fnode *fnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct super_block *sb = i->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	void *ea;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	int ea_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		/*i->i_mode |= S_IFREG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		i->i_mode &= ~0111;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		i->i_op = &hpfs_file_iops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		i->i_fop = &hpfs_file_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		clear_nlink(i);*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		make_bad_inode(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	if (hpfs_sb(i->i_sb)->sb_eas) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 			if (ea_size == 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 				i_uid_write(i, le16_to_cpu(*(__le16*)ea));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 				hpfs_inode->i_ea_uid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 			kfree(ea);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 			if (ea_size == 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 				i_gid_write(i, le16_to_cpu(*(__le16*)ea));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 				hpfs_inode->i_ea_gid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 			kfree(ea);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		if ((ea = hpfs_get_ea(i->i_sb, fnode, "SYMLINK", &ea_size))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 			kfree(ea);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			i->i_mode = S_IFLNK | 0777;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			i->i_op = &page_symlink_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 			inode_nohighmem(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 			i->i_data.a_ops = &hpfs_symlink_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 			set_nlink(i, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 			i->i_size = ea_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 			i->i_blocks = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			int rdev = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			umode_t mode = hpfs_sb(sb)->sb_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 			if (ea_size == 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 				mode = le16_to_cpu(*(__le16*)ea);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 				hpfs_inode->i_ea_mode = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			kfree(ea);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 			i->i_mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 			if (S_ISBLK(mode) || S_ISCHR(mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 				if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 					if (ea_size == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 						rdev = le32_to_cpu(*(__le32*)ea);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 					kfree(ea);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 				brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 				set_nlink(i, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 				i->i_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 				i->i_blocks = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 				init_special_inode(i, mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 					new_decode_dev(rdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 				return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	if (fnode_is_dir(fnode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		int n_dnodes, n_subdirs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		i->i_mode |= S_IFDIR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		i->i_op = &hpfs_dir_iops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		i->i_fop = &hpfs_dir_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		hpfs_inode->i_parent_dir = le32_to_cpu(fnode->up);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		hpfs_inode->i_dno = le32_to_cpu(fnode->u.external[0].disk_secno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		if (hpfs_sb(sb)->sb_chk >= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 			struct buffer_head *bh0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		n_dnodes = 0; n_subdirs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		i->i_blocks = 4 * n_dnodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		i->i_size = 2048 * n_dnodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		set_nlink(i, 2 + n_subdirs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		i->i_mode |= S_IFREG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		i->i_op = &hpfs_file_iops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		i->i_fop = &hpfs_file_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		set_nlink(i, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		i->i_size = le32_to_cpu(fnode->file_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		i->i_blocks = ((i->i_size + 511) >> 9) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		i->i_data.a_ops = &hpfs_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		hpfs_i(i)->mmu_private = i->i_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	/*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		   Some unknown structures like ACL may be in fnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		   we'd better not overwrite them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		__le32 ea;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			ea = cpu_to_le32(i_uid_read(i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 			hpfs_inode->i_ea_uid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 			ea = cpu_to_le32(i_gid_read(i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 			hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			hpfs_inode->i_ea_gid = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		if (!S_ISLNK(i->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 			  | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 			  && i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 			  | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 				ea = cpu_to_le32(i->i_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 				/* sick, but legal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 				hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 				hpfs_inode->i_ea_mode = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			ea = cpu_to_le32(new_encode_dev(i->i_rdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		}
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) void hpfs_write_inode(struct inode *i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	struct inode *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		if (*hpfs_inode->i_rddir_off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 			pr_err("write_inode: some position still there\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		kfree(hpfs_inode->i_rddir_off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		hpfs_inode->i_rddir_off = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	if (!i->i_nlink) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	if (parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		hpfs_inode->i_dirty = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		if (parent->i_state & I_NEW) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			hpfs_init_inode(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			hpfs_read_inode(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 			unlock_new_inode(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		hpfs_write_inode_nolock(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		iput(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) void hpfs_write_inode_nolock(struct inode *i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	struct fnode *fnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	struct quad_buffer_head qbh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	struct hpfs_dirent *de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	} else de = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	if (S_ISREG(i->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		fnode->file_size = cpu_to_le32(i->i_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		if (de) de->file_size = cpu_to_le32(i->i_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	} else if (S_ISDIR(i->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		fnode->file_size = cpu_to_le32(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		if (de) de->file_size = cpu_to_le32(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	hpfs_write_inode_ea(i, fnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	if (de) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		de->read_only = !(i->i_mode & 0222);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		hpfs_mark_4buffers_dirty(&qbh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		hpfs_brelse4(&qbh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	if (S_ISDIR(i->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 			de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			de->read_only = !(i->i_mode & 0222);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			de->ea_size = cpu_to_le32(/*hpfs_inode->i_ea_size*/0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 			de->file_size = cpu_to_le32(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 			hpfs_mark_4buffers_dirty(&qbh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 			hpfs_brelse4(&qbh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 			hpfs_error(i->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 				"directory %08lx doesn't have '.' entry",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 				(unsigned long)i->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	mark_buffer_dirty(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	struct inode *inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	int error = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	hpfs_lock(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	if ((attr->ia_valid & ATTR_UID) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	    from_kuid(&init_user_ns, attr->ia_uid) >= 0x10000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	if ((attr->ia_valid & ATTR_GID) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	    from_kgid(&init_user_ns, attr->ia_gid) >= 0x10000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	error = setattr_prepare(dentry, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	if ((attr->ia_valid & ATTR_SIZE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	    attr->ia_size != i_size_read(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		error = inode_newsize_ok(inode, attr->ia_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 		if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 			goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		truncate_setsize(inode, attr->ia_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		hpfs_truncate(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	setattr_copy(inode, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	hpfs_write_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)  out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	hpfs_unlock(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) void hpfs_write_if_changed(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	if (hpfs_inode->i_dirty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		hpfs_write_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) void hpfs_evict_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	truncate_inode_pages_final(&inode->i_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	clear_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	if (!inode->i_nlink) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		hpfs_lock(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		hpfs_remove_fnode(inode->i_sb, inode->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		hpfs_unlock(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }