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-rw-r--r--fs/jffs2/xattr.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index b55b803eddcb..c18c0ab70ea4 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -11,6 +11,8 @@
11 11
12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13 13
14#define JFFS2_XATTR_IS_CORRUPTED 1
15
14#include <linux/kernel.h> 16#include <linux/kernel.h>
15#include <linux/slab.h> 17#include <linux/slab.h>
16#include <linux/fs.h> 18#include <linux/fs.h>
@@ -153,7 +155,7 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat
153 JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", 155 JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
154 offset, je32_to_cpu(rx.hdr_crc), crc); 156 offset, je32_to_cpu(rx.hdr_crc), crc);
155 xd->flags |= JFFS2_XFLAGS_INVALID; 157 xd->flags |= JFFS2_XFLAGS_INVALID;
156 return -EIO; 158 return JFFS2_XATTR_IS_CORRUPTED;
157 } 159 }
158 totlen = PAD(sizeof(rx) + rx.name_len + 1 + je16_to_cpu(rx.value_len)); 160 totlen = PAD(sizeof(rx) + rx.name_len + 1 + je16_to_cpu(rx.value_len));
159 if (je16_to_cpu(rx.magic) != JFFS2_MAGIC_BITMASK 161 if (je16_to_cpu(rx.magic) != JFFS2_MAGIC_BITMASK
@@ -169,7 +171,7 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat
169 je32_to_cpu(rx.xid), xd->xid, 171 je32_to_cpu(rx.xid), xd->xid,
170 je32_to_cpu(rx.version), xd->version); 172 je32_to_cpu(rx.version), xd->version);
171 xd->flags |= JFFS2_XFLAGS_INVALID; 173 xd->flags |= JFFS2_XFLAGS_INVALID;
172 return -EIO; 174 return JFFS2_XATTR_IS_CORRUPTED;
173 } 175 }
174 xd->xprefix = rx.xprefix; 176 xd->xprefix = rx.xprefix;
175 xd->name_len = rx.name_len; 177 xd->name_len = rx.name_len;
@@ -227,12 +229,12 @@ static int do_load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum
227 data[xd->name_len] = '\0'; 229 data[xd->name_len] = '\0';
228 crc = crc32(0, data, length); 230 crc = crc32(0, data, length);
229 if (crc != xd->data_crc) { 231 if (crc != xd->data_crc) {
230 JFFS2_WARNING("node CRC failed (JFFS2_NODETYPE_XREF)" 232 JFFS2_WARNING("node CRC failed (JFFS2_NODETYPE_XATTR)"
231 " at %#08x, read: 0x%08x calculated: 0x%08x\n", 233 " at %#08x, read: 0x%08x calculated: 0x%08x\n",
232 ref_offset(xd->node), xd->data_crc, crc); 234 ref_offset(xd->node), xd->data_crc, crc);
233 kfree(data); 235 kfree(data);
234 xd->flags |= JFFS2_XFLAGS_INVALID; 236 xd->flags |= JFFS2_XFLAGS_INVALID;
235 return -EIO; 237 return JFFS2_XATTR_IS_CORRUPTED;
236 } 238 }
237 239
238 xd->flags |= JFFS2_XFLAGS_HOT; 240 xd->flags |= JFFS2_XFLAGS_HOT;
@@ -270,7 +272,7 @@ static int load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x
270 if (xd->xname) 272 if (xd->xname)
271 return 0; 273 return 0;
272 if (xd->flags & JFFS2_XFLAGS_INVALID) 274 if (xd->flags & JFFS2_XFLAGS_INVALID)
273 return -EIO; 275 return JFFS2_XATTR_IS_CORRUPTED;
274 if (unlikely(is_xattr_datum_unchecked(c, xd))) 276 if (unlikely(is_xattr_datum_unchecked(c, xd)))
275 rc = do_verify_xattr_datum(c, xd); 277 rc = do_verify_xattr_datum(c, xd);
276 if (!rc) 278 if (!rc)
@@ -462,7 +464,7 @@ static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref
462 if (crc != je32_to_cpu(rr.node_crc)) { 464 if (crc != je32_to_cpu(rr.node_crc)) {
463 JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", 465 JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
464 offset, je32_to_cpu(rr.node_crc), crc); 466 offset, je32_to_cpu(rr.node_crc), crc);
465 return -EIO; 467 return JFFS2_XATTR_IS_CORRUPTED;
466 } 468 }
467 if (je16_to_cpu(rr.magic) != JFFS2_MAGIC_BITMASK 469 if (je16_to_cpu(rr.magic) != JFFS2_MAGIC_BITMASK
468 || je16_to_cpu(rr.nodetype) != JFFS2_NODETYPE_XREF 470 || je16_to_cpu(rr.nodetype) != JFFS2_NODETYPE_XREF
@@ -472,7 +474,7 @@ static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref
472 offset, je16_to_cpu(rr.magic), JFFS2_MAGIC_BITMASK, 474 offset, je16_to_cpu(rr.magic), JFFS2_MAGIC_BITMASK,
473 je16_to_cpu(rr.nodetype), JFFS2_NODETYPE_XREF, 475 je16_to_cpu(rr.nodetype), JFFS2_NODETYPE_XREF,
474 je32_to_cpu(rr.totlen), PAD(sizeof(rr))); 476 je32_to_cpu(rr.totlen), PAD(sizeof(rr)));
475 return -EIO; 477 return JFFS2_XATTR_IS_CORRUPTED;
476 } 478 }
477 ref->ino = je32_to_cpu(rr.ino); 479 ref->ino = je32_to_cpu(rr.ino);
478 ref->xid = je32_to_cpu(rr.xid); 480 ref->xid = je32_to_cpu(rr.xid);