tree 306b9f8a19cefc6e2787308329a9ecea7825b5e8
parent 8a9736b3beae3e099173af7c324f6eaaba8a96e2
author Marri Devender Rao <devenrao@in.ibm.com> 1644938142 -0600
committer Marri Devender Rao <devenrao@in.ibm.com> 1679596198 -0500

bmcdump: ignore dump request when a dump is in progress

At present generating a user dump is an asynchronous call
and does not block the user to generate another dump.

This can cause out-of-memory issues if dumps are
generated in a loop.

Adding a check to see if the user-initiated dump is
already in progress before starting another user
dump request.

Return "Unavailable" error if generate user dump request is
received while a user dump generation is in progress.

Tested:
'''
root@p10bmc:~# busctl --verbose call xyz.openbmc_project.Dump.Manager
/xyz/openbmc_project/dump/bmc xyz.openbmc_project.Dump.Create CreateDump a{sv} 0
MESSAGE "o" {
        OBJECT_PATH "/xyz/openbmc_project/dump/bmc/entry/3";
};

root@p10bmc:~# busctl --verbose call xyz.openbmc_project.Dump.Manager
/xyz/openbmc_project/dump/bmc xyz.openbmc_project.Dump.Create CreateDump a{sv} 0
Call failed: The operation is not allowed
root@p10bmc:~# busctl --verbose call xyz.openbmc_project.Dump.Manager
/xyz/openbmc_project/dump/bmc xyz.openbmc_project.Dump.Create CreateDump a{sv} 0
Call failed: The operation is not allowed
root@p10bmc:~# busctl --verbose call xyz.openbmc_project.Dump.Manager
/xyz/openbmc_project/dump/bmc xyz.openbmc_project.Dump.Create CreateDump a{sv} 0
MESSAGE "o" {
        OBJECT_PATH "/xyz/openbmc_project/dump/bmc/entry/4";
};

'''

Signed-off-by: Marri Devender Rao <devenrao@in.ibm.com>
Change-Id: Ic9434f34c040405f8664f7dc71109e7cb67a80c2