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commit 52fce21ef94182fbe99b4e4344bdab42c6c95868
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Author: Andrew Price <anprice@redhat.com>
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Date: Thu Aug 17 17:45:31 2017 +0100
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gfs2_edit savemeta: Fix up saving of dinodes/symlinks
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Factor out the code that decides whether to save the dinode contents,
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improve its error reporting (and don't exit) and make sure contents of
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symlink dinodes are saved.
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Resolves: rhbz#1482542
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Signed-off-by: Andrew Price <anprice@redhat.com>
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diff --git a/gfs2/edit/savemeta.c b/gfs2/edit/savemeta.c
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index dee405bc..04f67fc7 100644
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--- a/gfs2/edit/savemeta.c
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+++ b/gfs2/edit/savemeta.c
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@@ -190,6 +190,38 @@ static const char *anthropomorphize(unsigned long long inhuman_value)
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return out_val;
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}
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+static int di_save_len(struct gfs2_buffer_head *bh, uint64_t owner)
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+{
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+ struct gfs2_inode *inode;
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+ struct gfs2_dinode *dn;
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+ int len;
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+
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+ if (sbd.gfs1)
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+ inode = lgfs2_gfs_inode_get(&sbd, bh);
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+ else
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+ inode = lgfs2_inode_get(&sbd, bh);
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+
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+ if (inode == NULL) {
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+ fprintf(stderr, "Error reading inode at %"PRIu64": %s\n",
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+ bh->b_blocknr, strerror(errno));
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+ return 0; /* Skip the block */
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+ }
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+ dn = &inode->i_di;
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+ len = sizeof(struct gfs2_dinode);
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+
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+ /* Do not save (user) data from the inode block unless they are
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+ indirect pointers, dirents, symlinks or fs internal data */
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+ if (dn->di_height != 0 ||
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+ S_ISDIR(dn->di_mode) ||
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+ S_ISLNK(dn->di_mode) ||
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+ (sbd.gfs1 && dn->__pad1 == GFS_FILE_DIR) ||
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+ block_is_systemfile(owner))
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+ len = sbd.bsize;
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+
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+ inode_put(&inode;;
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+ return len;
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+}
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+
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/*
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* get_gfs_struct_info - get block type and structure length
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*
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@@ -205,7 +237,6 @@ static int get_gfs_struct_info(struct gfs2_buffer_head *lbh, uint64_t owner,
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int *block_type, int *gstruct_len)
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{
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struct gfs2_meta_header mh;
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- struct gfs2_inode *inode;
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if (block_type != NULL)
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*block_type = 0;
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@@ -229,24 +260,7 @@ static int get_gfs_struct_info(struct gfs2_buffer_head *lbh, uint64_t owner,
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*gstruct_len = sbd.bsize;
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break;
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case GFS2_METATYPE_DI: /* 4 (disk inode) */
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- if (sbd.gfs1) {
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- inode = lgfs2_gfs_inode_get(&sbd, lbh);
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- } else {
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- inode = lgfs2_inode_get(&sbd, lbh);
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- }
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- if (inode == NULL) {
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- perror("Error reading inode");
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- exit(-1);
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- }
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- if (S_ISDIR(inode->i_di.di_mode) ||
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- (sbd.gfs1 && inode->i_di.__pad1 == GFS_FILE_DIR))
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- *gstruct_len = sbd.bsize;
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- else if (!inode->i_di.di_height && !block_is_systemfile(owner) &&
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- !S_ISDIR(inode->i_di.di_mode))
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- *gstruct_len = sizeof(struct gfs2_dinode);
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- else
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- *gstruct_len = sbd.bsize;
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- inode_put(&inode;;
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+ *gstruct_len = di_save_len(lbh, owner);
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break;
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case GFS2_METATYPE_IN: /* 5 (indir inode blklst) */
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*gstruct_len = sbd.bsize; /*sizeof(struct gfs_indirect);*/
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