#include "config.h"
#include "e2fsck.h"
#include "problem.h"
+#include "ext2fs/lfsck.h"
#include <ext2fs/ext2_ext_attr.h>
/*
}
}
+static errcode_t check_link_ea(e2fsck_t ctx, ext2_ino_t ino,
+ ext2_ino_t *last_ino,
+ struct ext2_inode_large *inode,
+ __u16 *link_counted)
+{
+ struct ext2_xattr_handle *handle;
+ struct link_ea_header *leh;
+ void *buf;
+ size_t ea_len;
+ errcode_t retval;
+
+ if (*last_ino != ino) {
+ e2fsck_read_inode_full(ctx, ino, EXT2_INODE(inode),
+ EXT2_INODE_SIZE(ctx->fs->super),
+ "pass4: get link ea count");
+ *last_ino = ino;
+ }
+
+ retval = ext2fs_xattrs_open(ctx->fs, ino, &handle);
+ if (retval)
+ return retval;
+
+ retval = ext2fs_xattrs_read_inode(handle, inode);
+ if (retval)
+ goto err;
+
+ retval = ext2fs_xattr_get(handle, EXT2_ATTR_INDEX_TRUSTED_PREFIX
+ LUSTRE_XATTR_MDT_LINK, &buf, &ea_len);
+ if (retval)
+ goto err;
+
+ leh = (struct link_ea_header *)buf;
+ if (leh->leh_magic == ext2fs_swab32(LINK_EA_MAGIC)) {
+ leh->leh_magic = LINK_EA_MAGIC;
+ leh->leh_reccount = ext2fs_swab32(leh->leh_reccount);
+ leh->leh_len = ext2fs_swab64(leh->leh_len);
+ }
+ if (leh->leh_magic != LINK_EA_MAGIC) {
+ retval = EINVAL;
+ goto err_free;
+ }
+ if (leh->leh_reccount == 0 && !leh->leh_overflow_time) {
+ retval = ENODATA;
+ goto err_free;
+ }
+ if (leh->leh_len > ea_len) {
+ retval = EINVAL;
+ goto err_free;
+ }
+
+ /* if linkEA overflowed and does not hold all links, assume *some*
+ * links exist until LFSCK is next run and resets leh_overflow_time */
+ if (leh->leh_overflow_time) {
+ if (inode->i_links_count > *link_counted)
+ *link_counted = inode->i_links_count;
+ else if (*link_counted == 0)
+ *link_counted = 1111;
+ }
+ if (leh->leh_reccount > *link_counted)
+ *link_counted = leh->leh_reccount;
+err_free:
+ ext2fs_free_mem(&buf);
+err:
+ ext2fs_xattrs_close(&handle);
+ return retval;
+}
+
void e2fsck_pass4(e2fsck_t ctx)
{
ext2_filsys fs = ctx->fs;
&link_count);
ext2fs_icount_fetch(ctx->inode_count, i,
&link_counted);
+ check_link_ea(ctx, i, &last_ino, inode, &link_counted);
}
isdir = ext2fs_test_inode_bitmap2(ctx->inode_dir_map, i);
if (isdir && (link_counted > EXT2_LINK_MAX)) {
}
link_counted = 1;
}
+ if (link_counted != link_count)
+ check_link_ea(ctx, i, &last_ino, inode, &link_counted);
+
if (link_counted != link_count) {
int fix_nlink = 0;
--- /dev/null
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Inode 15 ref count is 7, should be 6. Fix? yes
+
+Inode 16 ref count is 3, should be 6. Fix? yes
+
+Unattached inode 18
+Connect to /lost+found? yes
+
+Pass 5: Checking group summary information
+
+test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
+test_filesys: 18/4096 files (0.0% non-contiguous), 6424/16384 blocks
+Exit status is 1