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Allow Absence of Security Data #67

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Allow Absence of Security Data #67

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6 changes: 6 additions & 0 deletions src/wim.c
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Original file line number Diff line number Diff line change
Expand Up @@ -450,6 +450,12 @@ int wim_path ( struct vdisk_file *file, struct wim_header *header,
sizeof ( security ) ) ) != 0 )
return rc;

/* Special case: the header of an an empty security block
may contain a length of 0, although we must still consider a
minimum header length of 8 */
if (security.len == 0)
security.len = sizeof(security);

/* Get root directory offset */
direntry->subdir = ( ( security.len + sizeof ( uint64_t ) - 1 ) &
~( sizeof ( uint64_t ) - 1 ) );
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