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libutil: Introduce util_sys and util_sys_get_dev_addr()

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Many tools need to identify the device address of a given device. So
far, either the tool had its own implementation, or u2s_getbusid() was
used. Though, u2s_getbusid() was mainly designed for and used by the
DASD tools.

Introduce util_sys with a first function util_sys_get_dev_addr() which
provides a more universal way to identify the device address which is
not limited to one particular device type. The device address represents
either a busid (e.g. DASD), slot address (NVMe), H:C:T:L tuple (SCSI),
or other id types associated with a device.

Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Jan Höppner
2019-04-03 13:26:14 +02:00
parent ab510cff39
commit 5d2ebe5301
3 changed files with 96 additions and 1 deletions
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libutil/Makefile
+2 -1
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@@ -27,7 +27,8 @@ objects = util_base.o \
util_part.o \
util_prg.o \
util_proc.o \
util_rec.o
util_rec.o \
util_sys.o
util_base_example: util_base_example.o $(lib)
util_panic_example: util_panic_example.o $(lib)