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Last change
on this file since 3232 was 2725, checked in by Bruno Cornec, 13 years ago |
- Update mindi-busybox to 1.18.3 to avoid problems with the tar command which is now failing on recent versions with busybox 1.7.3
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-
Property svn:eol-style
set to
native
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File size:
862 bytes
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| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Utility routines.
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| 4 | *
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| 5 | * Copyright (C) 2007 by Denys Vlasenko <vda.linux@googlemail.com>
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| 6 | *
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| 7 | * Licensed under GPLv2, see file LICENSE in this source tree.
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| 8 | */
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| 9 |
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| 10 | #include "libbb.h"
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| 11 |
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| 12 | /* Wrapper which restarts poll on EINTR or ENOMEM.
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| 13 | * On other errors does perror("poll") and returns.
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| 14 | * Warning! May take longer than timeout_ms to return! */
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| 15 | int FAST_FUNC safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout)
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| 16 | {
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| 17 | while (1) {
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| 18 | int n = poll(ufds, nfds, timeout);
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| 19 | if (n >= 0)
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| 20 | return n;
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| 21 | /* Make sure we inch towards completion */
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| 22 | if (timeout > 0)
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| 23 | timeout--;
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| 24 | /* E.g. strace causes poll to return this */
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| 25 | if (errno == EINTR)
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| 26 | continue;
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| 27 | /* Kernel is very low on memory. Retry. */
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| 28 | /* I doubt many callers would handle this correctly! */
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| 29 | if (errno == ENOMEM)
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| 30 | continue;
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| 31 | bb_perror_msg("poll");
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| 32 | return n;
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| 33 | }
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| 34 | }
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