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The IPMI device node is kept open for the life of the platform - include
the O_CLOEXEC flag so it is not kept open for child processes.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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Explicitly keep track of whether the current interface config was set by
an IPMI network override, and avoid overwriting any saved config unless
the override was marked persistent.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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If the persistent bit is set in a IPMI network override, overwrite any
existing interface config in NVRAM with the new network override.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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On BMC platforms the 'Get System Boot Options' command can also be used
to check for a temporary network interface config override. This is
implemented via the optional 'OEM Parameters' field defined in the IPMI
v2 spec. We define the actual format of the field as:
- 4 byte cookie value
- 2 byte version value
- 1 byte hardware address size
- 1 byte IP address size
- Hardware address
- 1 byte flags for 'ignore' and 'method'
And for static configs:
- IP Address
- 1 byte subnet value
- Gateway address
If set the config override replaces any other interface config, forcing
the use of the specified configuration.
Signed-off-by: Sam Mendoza-Jonas <sam@mendozajonas.com>
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Fixes three unchecked return values, and one missing
initialisation.
Fixes Coverity defects #30450, #30451, #30454, and #30483
Signed-off-by: Samuel Mendoza-Jonas <sam.mj@au1.ibm.com>
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The ipmi module is shared between pb-config and pb-discover. During
system initilisation, we're likely to have a few invocations of
pb-config running, as well as pb-discover starting.
We may have multiple potential concurrent accesses to the ipmi device
node. To avoid problems, this change introduces a fcntl lock on the
device node.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change adds a direct IPMI interface to the /dev/ipmi0 device node,
which is present on OpenPower machines.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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We'd like to add a new backend to the bootdev storage, so move the
common bootdev-handling code into separate functions, moving
ipmi_bootdev_is_valid to ipmi.c.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Move our IPMI-specific definitions to a separate header, and a
mostly-empty ipmi.c file. We'll populate this with IPMI functionality in
later changes.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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