154 lines
4.4 KiB
C
154 lines
4.4 KiB
C
/*
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* Copyright (c) 1993 The Regents of the University of California.
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* Copyright (c) 1993 Jan-Simon Pendry
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* From:
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* Id: procfs_note.c,v 4.1 1993/12/17 10:47:45 jsp Rel
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*
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* $Id: procfs_note.c,v 1.2 1994/01/20 21:23:06 ws Exp $
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <miscfs/procfs/procfs.h>
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procfs_namemap_t procfs_signames[] = {
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/* regular signal names */
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{ "hup", SIGHUP }, { "int", SIGINT },
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{ "quit", SIGQUIT }, { "ill", SIGILL },
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{ "trap", SIGTRAP }, { "abrt", SIGABRT },
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{ "iot", SIGIOT }, { "emt", SIGEMT },
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{ "fpe", SIGFPE }, { "kill", SIGKILL },
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{ "bus", SIGBUS }, { "segv", SIGSEGV },
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{ "sys", SIGSYS }, { "pipe", SIGPIPE },
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{ "alrm", SIGALRM }, { "term", SIGTERM },
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{ "urg", SIGURG }, { "stop", SIGSTOP },
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{ "tstp", SIGTSTP }, { "cont", SIGCONT },
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{ "chld", SIGCHLD }, { "ttin", SIGTTIN },
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{ "ttou", SIGTTOU }, { "io", SIGIO },
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{ "xcpu", SIGXCPU }, { "xfsz", SIGXFSZ },
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{ "vtalrm", SIGVTALRM }, { "prof", SIGPROF },
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{ "winch", SIGWINCH }, { "info", SIGINFO },
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{ "usr1", SIGUSR1 }, { "usr2", SIGUSR2 },
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{ 0 },
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};
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pfs_readnote(sig, uio)
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int sig;
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struct uio *uio;
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{
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int xlen;
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int error;
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procfs_namemap_t *nm;
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/* could do indexing by sig */
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for (nm = procfs_signames; nm->nm_name; nm++)
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if (nm->nm_val == sig)
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break;
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if (!nm->nm_name)
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panic("pfs_readnote");
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xlen = strlen(nm->nm_name);
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if (uio->uio_resid < xlen)
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return EMSGSIZE;
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if (error = uiomove(nm->nm_name, xlen, uio))
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return error;
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return 0;
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}
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pfs_donote(curp, p, pfs, uio)
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struct proc *curp;
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struct proc *p;
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struct pfsnode *pfs;
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struct uio *uio;
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{
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int len = uio->uio_resid;
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int xlen;
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int error;
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char note[PROCFS_NOTELEN+1];
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procfs_namemap_t *nm;
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int sig, mask;
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if (pfs->pfs_type == Pnote && uio->uio_rw == UIO_READ) {
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mask = p->p_sig & ~p->p_sigmask;
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if (p->p_flag&SPPWAIT)
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mask &= ~stopsigmask;
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if (mask == 0)
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return 0;
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sig = ffs((long)mask);
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if (error = pfs_readnote(sig, pfs, uio))
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return error;
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p->p_sig &= ~mask;
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return 0;
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}
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if (uio->uio_rw != UIO_WRITE)
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return (EINVAL);
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xlen = PROCFS_NOTELEN;
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error = procfs_getuserstr(uio, note, &xlen);
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if (error)
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return (error);
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/*
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* Map signal names into signal generation
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* Unknown signals return EOPNOTSUPP.
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*/
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error = EOPNOTSUPP;
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nm = procfs_findname(procfs_signames, note, xlen);
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if (nm) {
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if (pfs->pfs_type == Pnote)
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psignal(p, nm->nm_val);
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else
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gsignal(p->p_pgid, nm->nm_val);
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error = 0;
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}
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return (error);
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}
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