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1c4917b6a739c887acbf6f7631b1f74084430ee7
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4 Commits

Author SHA1 Message Date
Michael Brown 1c4917b6a7 [linux] Validate length of ACPI table read from sysfs 
Consumers of acpi_find() will assume that returned structures include
a valid table header and that the length in the table header is
correct.  These assumptions are necessary when dealing with raw ACPI
tables, since there exists no independent source of length
information.

Ensure that these assumptions are also valid for ACPI tables read from
sysfs.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
 2021-03-03 01:55:07 +00:00
Michael Brown 6816006808 [linux] Use generic sysfs mechanism to read ACPI tables 
Signed-off-by: Michael Brown <mcb30@ipxe.org>
 2021-03-02 23:59:46 +00:00
Michael Brown 976839ae4c [linux] Free cached ACPI tables on shutdown 
Free any cached ACPI tables for the sake of neatness (and a clean
report from Valgrind).

Signed-off-by: Michael Brown <mcb30@ipxe.org>
 2021-03-02 23:59:27 +00:00
Michael Brown c09b627973 [linux] Provide ACPI settings via /sys/firmware/acpi/tables 
Signed-off-by: Michael Brown <mcb30@ipxe.org>
 2021-03-01 01:38:54 +00:00