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50199fa0d0
more topology change done that may require its attention. Add few missing g_do_wither() calls in respective places to signal it. This fixes potential infinite loop here when some provider is withered, but still opened or connected for some reason and so can not be destroyed. For example, see r227009 and r227510.
81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*-
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* Copyright (c) 2002 Poul-Henning Kamp
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Poul-Henning Kamp
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* and NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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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. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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LIST_HEAD(class_list_head, g_class);
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TAILQ_HEAD(g_tailq_head, g_geom);
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extern int g_collectstats;
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extern int g_debugflags;
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/*
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* 1 G_T_TOPOLOGY
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* 2 G_T_BIO
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* 4 G_T_ACCESS
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* 8 (unused)
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* 16 Allow footshooting on rank#1 providers
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* 32 G_T_DETAILS
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*/
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#define G_F_DISKIOCTL 64
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#define G_F_CTLDUMP 128
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/* geom_dump.c */
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void g_confxml(void *, int flag);
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void g_conf_specific(struct sbuf *sb, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp);
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void g_confdot(void *, int flag);
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void g_conftxt(void *, int flag);
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/* geom_event.c */
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void g_event_init(void);
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void g_run_events(void);
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void g_do_wither(void);
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/* geom_subr.c */
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extern struct class_list_head g_classes;
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extern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down;
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void g_wither_washer(void);
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/* geom_io.c */
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void g_io_init(void);
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void g_io_schedule_down(struct thread *tp);
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void g_io_schedule_up(struct thread *tp);
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/* geom_kern.c / geom_kernsim.c */
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void g_init(void);
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extern int g_shutdown;
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/* geom_ctl.c */
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void g_ctl_init(void);
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