A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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make kernel-side POLL... arch-independent

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mangle/demangle on the way to/from userland

Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2017-11-29 19:00:41 -05:00
commit c71d227fc4
10 changed files with 125 additions and 8 deletions
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4
fs/select.c
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@ -817,7 +817,7 @@ static inline __poll_t do_pollfd(struct pollfd *pollfd, poll_table *pwait,
mask = POLLNVAL;
if (f.file) {
/* userland u16 ->events contains POLL... bitmap */
__poll_t filter = (__force __poll_t)pollfd->events |
__poll_t filter = demangle_poll(pollfd->events) |
POLLERR | POLLHUP;
mask = DEFAULT_POLLMASK;
if (f.file->f_op->poll) {
@ -833,7 +833,7 @@ static inline __poll_t do_pollfd(struct pollfd *pollfd, poll_table *pwait,
}
}
/* ... and so does ->revents */
pollfd->revents = (__force u16)mask;
pollfd->revents = mangle_poll(mask);
return mask;
}