aboutsummaryrefslogtreecommitdiffstats
path: root/fs/udf/misc.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/udf/misc.c')
-rw-r--r--fs/udf/misc.c87
1 files changed, 36 insertions, 51 deletions
diff --git a/fs/udf/misc.c b/fs/udf/misc.c
index a7f57277a96e..15297deb5051 100644
--- a/fs/udf/misc.c
+++ b/fs/udf/misc.c
@@ -54,15 +54,15 @@ struct genericFormat *udf_add_extendedattr(struct inode *inode, uint32_t size,
54 int i; 54 int i;
55 55
56 ea = UDF_I_DATA(inode); 56 ea = UDF_I_DATA(inode);
57 if (UDF_I_LENEATTR(inode)) 57 if (UDF_I_LENEATTR(inode)) {
58 ad = UDF_I_DATA(inode) + UDF_I_LENEATTR(inode); 58 ad = UDF_I_DATA(inode) + UDF_I_LENEATTR(inode);
59 else { 59 } else {
60 ad = ea; 60 ad = ea;
61 size += sizeof(struct extendedAttrHeaderDesc); 61 size += sizeof(struct extendedAttrHeaderDesc);
62 } 62 }
63 63
64 offset = inode->i_sb->s_blocksize - udf_file_entry_alloc_offset(inode) - 64 offset = inode->i_sb->s_blocksize - udf_file_entry_alloc_offset(inode) -
65 UDF_I_LENALLOC(inode); 65 UDF_I_LENALLOC(inode);
66 66
67 /* TODO - Check for FreeEASpace */ 67 /* TODO - Check for FreeEASpace */
68 68
@@ -76,56 +76,45 @@ struct genericFormat *udf_add_extendedattr(struct inode *inode, uint32_t size,
76 76
77 if (UDF_I_LENEATTR(inode)) { 77 if (UDF_I_LENEATTR(inode)) {
78 /* check checksum/crc */ 78 /* check checksum/crc */
79 if (le16_to_cpu(eahd->descTag.tagIdent) != 79 if (le16_to_cpu(eahd->descTag.tagIdent) != TAG_IDENT_EAHD ||
80 TAG_IDENT_EAHD 80 le32_to_cpu(eahd->descTag.tagLocation) != UDF_I_LOCATION(inode).logicalBlockNum) {
81 || le32_to_cpu(eahd->descTag.tagLocation) !=
82 UDF_I_LOCATION(inode).logicalBlockNum) {
83 return NULL; 81 return NULL;
84 } 82 }
85 } else { 83 } else {
86 size -= sizeof(struct extendedAttrHeaderDesc); 84 size -= sizeof(struct extendedAttrHeaderDesc);
87 UDF_I_LENEATTR(inode) += 85 UDF_I_LENEATTR(inode) += sizeof(struct extendedAttrHeaderDesc);
88 sizeof(struct extendedAttrHeaderDesc);
89 eahd->descTag.tagIdent = cpu_to_le16(TAG_IDENT_EAHD); 86 eahd->descTag.tagIdent = cpu_to_le16(TAG_IDENT_EAHD);
90 if (UDF_SB_UDFREV(inode->i_sb) >= 0x0200) 87 if (UDF_SB_UDFREV(inode->i_sb) >= 0x0200)
91 eahd->descTag.descVersion = cpu_to_le16(3); 88 eahd->descTag.descVersion = cpu_to_le16(3);
92 else 89 else
93 eahd->descTag.descVersion = cpu_to_le16(2); 90 eahd->descTag.descVersion = cpu_to_le16(2);
94 eahd->descTag.tagSerialNum = 91 eahd->descTag.tagSerialNum = cpu_to_le16(UDF_SB_SERIALNUM(inode->i_sb));
95 cpu_to_le16(UDF_SB_SERIALNUM(inode->i_sb)); 92 eahd->descTag.tagLocation = cpu_to_le32(UDF_I_LOCATION(inode).logicalBlockNum);
96 eahd->descTag.tagLocation =
97 cpu_to_le32(UDF_I_LOCATION(inode).logicalBlockNum);
98 eahd->impAttrLocation = cpu_to_le32(0xFFFFFFFF); 93 eahd->impAttrLocation = cpu_to_le32(0xFFFFFFFF);
99 eahd->appAttrLocation = cpu_to_le32(0xFFFFFFFF); 94 eahd->appAttrLocation = cpu_to_le32(0xFFFFFFFF);
100 } 95 }
101 96
102 offset = UDF_I_LENEATTR(inode); 97 offset = UDF_I_LENEATTR(inode);
103 if (type < 2048) { 98 if (type < 2048) {
104 if (le32_to_cpu(eahd->appAttrLocation) < 99 if (le32_to_cpu(eahd->appAttrLocation) < UDF_I_LENEATTR(inode)) {
105 UDF_I_LENEATTR(inode)) { 100 uint32_t aal = le32_to_cpu(eahd->appAttrLocation);
106 uint32_t aal = 101 memmove(&ea[offset - aal + size],
107 le32_to_cpu(eahd->appAttrLocation); 102 &ea[aal], offset - aal);
108 memmove(&ea[offset - aal + size], &ea[aal],
109 offset - aal);
110 offset -= aal; 103 offset -= aal;
111 eahd->appAttrLocation = cpu_to_le32(aal + size); 104 eahd->appAttrLocation = cpu_to_le32(aal + size);
112 } 105 }
113 if (le32_to_cpu(eahd->impAttrLocation) < 106 if (le32_to_cpu(eahd->impAttrLocation) < UDF_I_LENEATTR(inode)) {
114 UDF_I_LENEATTR(inode)) { 107 uint32_t ial = le32_to_cpu(eahd->impAttrLocation);
115 uint32_t ial = 108 memmove(&ea[offset - ial + size],
116 le32_to_cpu(eahd->impAttrLocation); 109 &ea[ial], offset - ial);
117 memmove(&ea[offset - ial + size], &ea[ial],
118 offset - ial);
119 offset -= ial; 110 offset -= ial;
120 eahd->impAttrLocation = cpu_to_le32(ial + size); 111 eahd->impAttrLocation = cpu_to_le32(ial + size);
121 } 112 }
122 } else if (type < 65536) { 113 } else if (type < 65536) {
123 if (le32_to_cpu(eahd->appAttrLocation) < 114 if (le32_to_cpu(eahd->appAttrLocation) < UDF_I_LENEATTR(inode)) {
124 UDF_I_LENEATTR(inode)) { 115 uint32_t aal = le32_to_cpu(eahd->appAttrLocation);
125 uint32_t aal = 116 memmove(&ea[offset - aal + size],
126 le32_to_cpu(eahd->appAttrLocation); 117 &ea[aal], offset - aal);
127 memmove(&ea[offset - aal + size], &ea[aal],
128 offset - aal);
129 offset -= aal; 118 offset -= aal;
130 eahd->appAttrLocation = cpu_to_le32(aal + size); 119 eahd->appAttrLocation = cpu_to_le32(aal + size);
131 } 120 }
@@ -133,18 +122,18 @@ struct genericFormat *udf_add_extendedattr(struct inode *inode, uint32_t size,
133 /* rewrite CRC + checksum of eahd */ 122 /* rewrite CRC + checksum of eahd */
134 crclen = sizeof(struct extendedAttrHeaderDesc) - sizeof(tag); 123 crclen = sizeof(struct extendedAttrHeaderDesc) - sizeof(tag);
135 eahd->descTag.descCRCLength = cpu_to_le16(crclen); 124 eahd->descTag.descCRCLength = cpu_to_le16(crclen);
136 eahd->descTag.descCRC = 125 eahd->descTag.descCRC = cpu_to_le16(udf_crc((char *)eahd +
137 cpu_to_le16(udf_crc((char *)eahd + sizeof(tag), crclen, 0)); 126 sizeof(tag), crclen, 0));
138 eahd->descTag.tagChecksum = 0; 127 eahd->descTag.tagChecksum = 0;
139 for (i = 0; i < 16; i++) 128 for (i = 0; i < 16; i++)
140 if (i != 4) 129 if (i != 4)
141 eahd->descTag.tagChecksum += 130 eahd->descTag.tagChecksum += ((uint8_t *)&(eahd->descTag))[i];
142 ((uint8_t *) & (eahd->descTag))[i];
143 UDF_I_LENEATTR(inode) += size; 131 UDF_I_LENEATTR(inode) += size;
144 return (struct genericFormat *)&ea[offset]; 132 return (struct genericFormat *)&ea[offset];
145 } 133 }
146 if (loc & 0x02) { 134 if (loc & 0x02) {
147 } 135 }
136
148 return NULL; 137 return NULL;
149} 138}
150 139
@@ -163,8 +152,7 @@ struct genericFormat *udf_get_extendedattr(struct inode *inode, uint32_t type,
163 152
164 /* check checksum/crc */ 153 /* check checksum/crc */
165 if (le16_to_cpu(eahd->descTag.tagIdent) != TAG_IDENT_EAHD || 154 if (le16_to_cpu(eahd->descTag.tagIdent) != TAG_IDENT_EAHD ||
166 le32_to_cpu(eahd->descTag.tagLocation) != 155 le32_to_cpu(eahd->descTag.tagLocation) != UDF_I_LOCATION(inode).logicalBlockNum) {
167 UDF_I_LOCATION(inode).logicalBlockNum) {
168 return NULL; 156 return NULL;
169 } 157 }
170 158
@@ -177,13 +165,13 @@ struct genericFormat *udf_get_extendedattr(struct inode *inode, uint32_t type,
177 165
178 while (offset < UDF_I_LENEATTR(inode)) { 166 while (offset < UDF_I_LENEATTR(inode)) {
179 gaf = (struct genericFormat *)&ea[offset]; 167 gaf = (struct genericFormat *)&ea[offset];
180 if (le32_to_cpu(gaf->attrType) == type 168 if (le32_to_cpu(gaf->attrType) == type && gaf->attrSubtype == subtype)
181 && gaf->attrSubtype == subtype)
182 return gaf; 169 return gaf;
183 else 170 else
184 offset += le32_to_cpu(gaf->attrLength); 171 offset += le32_to_cpu(gaf->attrLength);
185 } 172 }
186 } 173 }
174
187 return NULL; 175 return NULL;
188} 176}
189 177
@@ -216,23 +204,22 @@ struct buffer_head *udf_read_tagged(struct super_block *sb, uint32_t block,
216 return NULL; 204 return NULL;
217 } 205 }
218 206
219 tag_p = (tag *) (bh->b_data); 207 tag_p = (tag *)(bh->b_data);
220 208
221 *ident = le16_to_cpu(tag_p->tagIdent); 209 *ident = le16_to_cpu(tag_p->tagIdent);
222 210
223 if (location != le32_to_cpu(tag_p->tagLocation)) { 211 if (location != le32_to_cpu(tag_p->tagLocation)) {
224 udf_debug("location mismatch block %u, tag %u != %u\n", 212 udf_debug("location mismatch block %u, tag %u != %u\n",
225 block + UDF_SB_SESSION(sb), 213 block + UDF_SB_SESSION(sb), le32_to_cpu(tag_p->tagLocation), location);
226 le32_to_cpu(tag_p->tagLocation), location);
227 goto error_out; 214 goto error_out;
228 } 215 }
229 216
230 /* Verify the tag checksum */ 217 /* Verify the tag checksum */
231 checksum = 0U; 218 checksum = 0U;
232 for (i = 0; i < 4; i++) 219 for (i = 0; i < 4; i++)
233 checksum += (uint8_t) (bh->b_data[i]); 220 checksum += (uint8_t)(bh->b_data[i]);
234 for (i = 5; i < 16; i++) 221 for (i = 5; i < 16; i++)
235 checksum += (uint8_t) (bh->b_data[i]); 222 checksum += (uint8_t)(bh->b_data[i]);
236 if (checksum != tag_p->tagChecksum) { 223 if (checksum != tag_p->tagChecksum) {
237 printk(KERN_ERR "udf: tag checksum failed block %d\n", block); 224 printk(KERN_ERR "udf: tag checksum failed block %d\n", block);
238 goto error_out; 225 goto error_out;
@@ -249,16 +236,14 @@ struct buffer_head *udf_read_tagged(struct super_block *sb, uint32_t block,
249 /* Verify the descriptor CRC */ 236 /* Verify the descriptor CRC */
250 if (le16_to_cpu(tag_p->descCRCLength) + sizeof(tag) > sb->s_blocksize || 237 if (le16_to_cpu(tag_p->descCRCLength) + sizeof(tag) > sb->s_blocksize ||
251 le16_to_cpu(tag_p->descCRC) == udf_crc(bh->b_data + sizeof(tag), 238 le16_to_cpu(tag_p->descCRC) == udf_crc(bh->b_data + sizeof(tag),
252 le16_to_cpu(tag_p-> 239 le16_to_cpu(tag_p->descCRCLength), 0)) {
253 descCRCLength),
254 0)) {
255 return bh; 240 return bh;
256 } 241 }
257 udf_debug("Crc failure block %d: crc = %d, crclen = %d\n", 242 udf_debug("Crc failure block %d: crc = %d, crclen = %d\n",
258 block + UDF_SB_SESSION(sb), le16_to_cpu(tag_p->descCRC), 243 block + UDF_SB_SESSION(sb), le16_to_cpu(tag_p->descCRC),
259 le16_to_cpu(tag_p->descCRCLength)); 244 le16_to_cpu(tag_p->descCRCLength));
260 245
261 error_out: 246error_out:
262 brelse(bh); 247 brelse(bh);
263 return NULL; 248 return NULL;
264} 249}
@@ -272,7 +257,7 @@ struct buffer_head *udf_read_ptagged(struct super_block *sb, kernel_lb_addr loc,
272 257
273void udf_update_tag(char *data, int length) 258void udf_update_tag(char *data, int length)
274{ 259{
275 tag *tptr = (tag *) data; 260 tag *tptr = (tag *)data;
276 int i; 261 int i;
277 262
278 length -= sizeof(tag); 263 length -= sizeof(tag);
@@ -283,13 +268,13 @@ void udf_update_tag(char *data, int length)
283 268
284 for (i = 0; i < 16; i++) 269 for (i = 0; i < 16; i++)
285 if (i != 4) 270 if (i != 4)
286 tptr->tagChecksum += (uint8_t) (data[i]); 271 tptr->tagChecksum += (uint8_t)(data[i]);
287} 272}
288 273
289void udf_new_tag(char *data, uint16_t ident, uint16_t version, uint16_t snum, 274void udf_new_tag(char *data, uint16_t ident, uint16_t version, uint16_t snum,
290 uint32_t loc, int length) 275 uint32_t loc, int length)
291{ 276{
292 tag *tptr = (tag *) data; 277 tag *tptr = (tag *)data;
293 tptr->tagIdent = cpu_to_le16(ident); 278 tptr->tagIdent = cpu_to_le16(ident);
294 tptr->descVersion = cpu_to_le16(version); 279 tptr->descVersion = cpu_to_le16(version);
295 tptr->tagSerialNum = cpu_to_le16(snum); 280 tptr->tagSerialNum = cpu_to_le16(snum);
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-27 03:32:19 -0400