kernel: file_wrapper: copy mode of original inode #2937
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bionic uses fstat to determine whether an fd is a tty and set proper buffering flags see: https://cs.android.com/android/platform/superproject/main/+/main:bionic/libc/upstream-openbsd/lib/libc/stdio/makebuf.c;l=61-95;drc=9a4b68e20d617b2cb3355071521f16e8c3d538df
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Bionic uses fstat to determine whether an fd is a tty and set proper buffering flags, so we also need to set the wrapper file's inode mode to the original inode mode.
see: https://cs.android.com/android/platform/superproject/main/+/main:bionic/libc/upstream-openbsd/lib/libc/stdio/makebuf.c;l=61-95;drc=9a4b68e20d617b2cb3355071521f16e8c3d538df