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Fix incorrect "Access beyond the end of the device" reporting for INQUIRY on vcdroms without disk

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Reported and suggested how to fix it by Bart Van Assche <bvanassche@acm.org>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4309 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2012-05-19 03:42:57 +00:00
parent 46a4e0a2ae
commit b91344f856
1 changed files with 6 additions and 2 deletions
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scst/src/dev_handlers/scst_vdisk.c
+6 -2
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@@ -1189,8 +1189,12 @@ static bool vdisk_parse_offset(struct vdisk_cmd_params *p, struct scst_cmd *cmd)
(long long unsigned int)lba_start,
(long long unsigned int)loff,
(long long unsigned int)data_len);
if (unlikely(loff < 0) || unlikely(data_len < 0) ||
unlikely((loff + data_len) > virt_dev->file_size)) {
EXTRACHECKS_BUG_ON((loff < 0) || unlikely(data_len < 0));
/* If lba_len is 0, loff doesn't make sense, so this error not possible */
if (unlikely((loff + data_len) > virt_dev->file_size) &&
(cmd->lba_len != 0)) {
PRINT_INFO("Access beyond the end of the device "
"(%lld of %lld, data len %lld)",
(long long unsigned int)loff,