kselftest/arm64: mte: Report filename on failing temp file creation

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The MTE selftests create temporary files in /dev/shm, for later mmap-ing
them. When there is no tmpfs mounted on /dev/shm, or /dev/shm does not
exist in the first place (on minimal filesystems), the error message is
not giving good hints:
    # FAIL: Unable to open temporary file
    # FAIL: memory allocation
    not ok 17 Check initial tags with private mapping, ...

Add a perror() call, that gives both the filename and the actual error
reason, so that users get a chance of correcting that.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Mark Brown <broone@kernel.org>
Link: https://lore.kernel.org/r/20210319165334.29213-12-andre.przywara@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

...

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Andre Przywara 2021-03-19 16:53:34 +00:00 • committed by Catalin Marinas

parent b4e1fa2290

commit 75347add03

1 changed files with 1 additions and 0 deletions

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tools/testing/selftests/arm64/mte/mte_common_util.c

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