69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/* sigprocmask.c: A replacement for the sigprocmask() function
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%%% portions-copyright-cmetz
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Portions of this software are Copyright 1996 by Craig Metz, All Rights
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Reserved. The Inner Net License Version 2 applies to these portions of
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the software.
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You should have received a copy of the license with this software. If
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you didn't get a copy, you may request one from <license@inner.net>.
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Portions of this software are Copyright 1995 by Randall Atkinson and Dan
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McDonald, All Rights Reserved. All Rights under this copyright are assigned
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to the U.S. Naval Research Laboratory (NRL). The NRL Copyright Notice and
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License Agreement applies to this software.
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History:
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Created by cmetz for OPIE 2.2 from popen.c. Use FUNCTION
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declaration et al. Include opie.h.
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*/
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#include "opie_cfg.h"
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#include <sys/types.h>
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#if HAVE_SIGNAL_H
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#include <signal.h>
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#endif /* HAVE_SIGNAL_H */
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#if HAVE_SYS_SIGNAL_H
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#include <sys/signal.h>
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#endif /* HAVE_SYS_SIGNAL_H */
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#if !HAVE_SIGBLOCK || !HAVE_SIGSETMASK
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Without sigblock and sigsetmask, we can't build a replacement sigprocmask.
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#endif /* !HAVE_SIGBLOCK || !HAVE_SIGSETMASK */
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#include "opie.h"
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#ifndef sigset_t
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#define sigset_t int
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#endif /* sigset_t */
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int sigprocmask FUNCTION((how, set, oset), int how AND sigset_t *set AND sigset_t *oset)
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{
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int old, new;
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if (set && (set != (sigset_t *)SIG_IGN) && (set != (sigset_t *)SIG_ERR))
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new = *set;
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else
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new = 0;
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switch(how) {
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case SIG_BLOCK:
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old = sigblock(new);
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if (oset && (oset != (sigset_t *)SIG_IGN) && (oset != (sigset_t *)SIG_ERR))
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*oset = old;
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return 0;
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case SIG_SETMASK:
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old = sigsetmask(new);
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if (oset && (oset != (sigset_t *)SIG_IGN) && (oset != (sigset_t *)SIG_ERR))
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*oset = old;
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return 0;
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case SIG_UNBLOCK:
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/* not implemented */
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default:
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return 0;
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}
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}
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