new helper: __alloc_fd()

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Essentially, alloc_fd() in a files_struct we own a reference to.
Most of the time wanting to use it is a sign of lousy API
design (such as android/binder).  It's *not* a general-purpose
interface; better that than open-coding its guts, but again,
playing with other process' descriptor table is a sign of bad
design.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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This commit is contained in:

Al Viro 2012-08-12 17:27:30 -04:00

parent f33ff9927f

commit dcfadfa4ec

3 changed files with 16 additions and 58 deletions

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59

drivers/staging/android/binder.c

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12

fs/file.c

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3

include/linux/fdtable.h

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