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qemu with hax to log dma reads & writes jcs.org/2018/11/12/vfio
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scripts/get_maintainer.pl: Print proper error message for missing $file

If you pass scripts/get_maintainer.pl the name of a FIFO or other
exciting object (/dev/stdin, for example), it would falsely print
"file not found". Instead: stat the object rather than using -f so
that we do not mind if the object is not a file; and print the errno
value in the error message.

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
CC: Thomas Huth <thuth@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <1520535787-6223-13-git-send-email-ian.jackson@eu.citrix.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>

authored by

Ian Jackson and committed by
Paolo Bonzini 36b4cf19 7b1db090

+2 -2
+2 -2
scripts/get_maintainer.pl
··· 381 381 ##if $file is a directory and it lacks a trailing slash, add one 382 382 if ((-d $file)) { 383 383 $file =~ s@([^/])$@$1/@; 384 - } elsif (!(-f $file)) { 385 - die "$P: file '${file}' not found\n"; 384 + } elsif (!(stat $file)) { 385 + die "$P: file '${file}' not found: $!\n"; 386 386 } 387 387 } 388 388 if ($from_filename) {