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POSIX requires invalid file descriptors to be detected rather than silently ignored. FreeBSD 8.2 detects if fd 0 has been closed and appears in a set while fd 1 is still open, but mistakenly optimizes and refuses to check any fds in the set beyond the maximum open fd. * m4/select.m4 (gl_FUNC_SELECT): Probe for FreeBSD bug. * lib/select.c (rpl_select) [!win32]: Work around it. * modules/select (Depends-on): Add dup2. * doc/posix-functions/select.texi (select): Document this.
36 lines
572 B
Plaintext
36 lines
572 B
Plaintext
Description:
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select() function: synchronous I/O multiplexing.
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Files:
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lib/select.c
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m4/select.m4
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Depends-on:
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sys_select
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alloca [test $REPLACE_SELECT = 1]
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dup2 [test $REPLACE_SELECT = 1]
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sockets [test $REPLACE_SELECT = 1]
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sys_time [test $REPLACE_SELECT = 1]
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msvc-nothrow [test $REPLACE_SELECT = 1]
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configure.ac:
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gl_FUNC_SELECT
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if test $REPLACE_SELECT = 1; then
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AC_LIBOBJ([select])
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fi
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gl_SYS_SELECT_MODULE_INDICATOR([select])
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Makefile.am:
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Include:
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<sys/select.h>
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Link:
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$(LIB_SELECT)
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License:
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LGPLv2+
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Maintainer:
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Simon Josefsson
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