43b0e40f85
1997-05-10 11:46 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/rpcsvc/nis_callback.x: New, from tirpcsrc-2.3. * nis/nis_call.c (__nis_docall): Rewritten for navigation in NIS+ namespace hierachy. * nis/nis_intern.h: Add new __nis_docall function prototypes. * nis/nis_add.c: Change __nis_docall/__nis_docall2 parameters for new rewritten functions. * nis/nis_checkpoint.c: Likewise. * nis/nis_lookup.c: Likewise. * nis/nis_mkdir.c: Likewise. * nis/nis_modify.c: Likewise. * nis/nis_ping.c: Likewise. * nis/nis_remove.c: Likewise. * nis/nis_rmdir.c: Likewise. * nis/nis_server.c: Likewise. * nis/nis_table.c: Likewise. 1997-05-09 16:09 Miles Bader <miles@gnu.ai.mit.edu> * argp/argp-eexst.c: Include <sysexits.h>. (argp_err_exit_status): Initialize to EX_USAGE. * argp/argp.h, argp/argp-help.c: Doc fixes. 1997-05-08 17:15 Miles Bader <miles@gnu.ai.mit.edu> * argp/argp.h [!__error_t_defined] (__error_t_defined): Define. * argp/argp-help.c (canon_doc_option): Correct ctype tests.
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* Poll system call, with emulation if it is not available.
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Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <sys/poll.h>
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extern int __syscall_poll __P ((struct pollfd *fds, unsigned int nfds,
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int timeout));
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weak_extern (__syscall_poll)
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static int __emulate_poll __P ((struct pollfd *fds, unsigned long int nfds,
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int timeout));
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/* The real implementation. */
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int
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poll (fds, nfds, timeout)
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struct pollfd *fds;
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unsigned long int nfds;
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int timeout;
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{
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static int must_emulate = 0;
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int (*syscall) __P ((struct pollfd *, unsigned int, int)) = __syscall_poll;
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if (!must_emulate)
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{
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if (syscall)
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{
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int errno_saved = errno;
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int retval = __syscall_poll (fds, nfds, timeout);
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if (retval >= 0 || errno != ENOSYS)
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return retval;
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__set_errno (errno_saved);
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}
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must_emulate = 1;
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}
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return __emulate_poll (fds, nfds, timeout);
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}
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/* Get the emulation code. */
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#define poll(fds, nfds, timeout) static __emulate_poll (fds, nfds, timeout)
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#include <sysdeps/unix/bsd/poll.c>
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