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lvm2/daemons/dmfilemapd/Makefile.in

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daemons: add dmfilemapd Add a daemon that can be launched to monitor a group of regions corresponding to the extents of a file, and to update the regions as the file's allocation changes. The daemon is intended to be started from a library interface, but can also be run from the command line: dmfilemapd <fd> <group_id> <path> <mode> [<foreground>[<log_level>]] Where fd is a file descriptor open on the mapped file, group_id is the group identifier of the mapped group and mode is either "inode" or "path". E.g.: # dmfilemapd 3 0 vm.img inode 1 3 3<vm.img ... If foreground is non-zero, the daemon will not fork to run in the background. If verbose is non-zero, libdm and daemon log messages will be printed. It is possible for the group identifier to change when regions are re-mapped: this occurs when the group leader is deleted (regroup=1 in dm_stats_update_regions_from_fd()), and another region is created before the daemon has a chance to recreate the leader region. The operation is inherently racey since there is currently no way to atomically move or resize a dm_stats region while retaining its region_id. Detect this condition and update the group_id value stored in the filemap monitor. A function is also provided in the the stats API to launch the filemap monitoring daemon: int dm_stats_start_filemapd(int fd, uint64_t group_id, const char *path, dm_filemapd_mode_t mode, unsigned foreground, unsigned verbose); This carries out the first fork and execs dmfilemapd with the arguments specified. A dm_filemapd_mode_t value is specified by the mode argument: either DM_FILEMAPD_FOLLOW_INODE, or DM_FILEMAPD_FOLLOW_PATH. A helper function, dm_filemapd_mode_from_string(), is provided to parse a string containing a valid mode name into the appropriate dm_filemapd_mode_t value.
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#
# Copyright (C) 2016 Red Hat, Inc. All rights reserved.
#
# This file is part of the device-mapper userspace tools.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU Lesser General Public License v.2.1.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
srcdir = @srcdir@
top_srcdir = @top_srcdir@
top_builddir = @top_builddir@
SOURCES = dmfilemapd.c
TARGETS = dmfilemapd
daemons: cleanup dmeventd references from dmfilemapd/Makefile.in
2017-03-10 20:12:04 +03:00
.PHONY: install_dmfilemapd install_dmfilemapd_static
daemons: add dmfilemapd Add a daemon that can be launched to monitor a group of regions corresponding to the extents of a file, and to update the regions as the file's allocation changes. The daemon is intended to be started from a library interface, but can also be run from the command line: dmfilemapd <fd> <group_id> <path> <mode> [<foreground>[<log_level>]] Where fd is a file descriptor open on the mapped file, group_id is the group identifier of the mapped group and mode is either "inode" or "path". E.g.: # dmfilemapd 3 0 vm.img inode 1 3 3<vm.img ... If foreground is non-zero, the daemon will not fork to run in the background. If verbose is non-zero, libdm and daemon log messages will be printed. It is possible for the group identifier to change when regions are re-mapped: this occurs when the group leader is deleted (regroup=1 in dm_stats_update_regions_from_fd()), and another region is created before the daemon has a chance to recreate the leader region. The operation is inherently racey since there is currently no way to atomically move or resize a dm_stats region while retaining its region_id. Detect this condition and update the group_id value stored in the filemap monitor. A function is also provided in the the stats API to launch the filemap monitoring daemon: int dm_stats_start_filemapd(int fd, uint64_t group_id, const char *path, dm_filemapd_mode_t mode, unsigned foreground, unsigned verbose); This carries out the first fork and execs dmfilemapd with the arguments specified. A dm_filemapd_mode_t value is specified by the mode argument: either DM_FILEMAPD_FOLLOW_INODE, or DM_FILEMAPD_FOLLOW_PATH. A helper function, dm_filemapd_mode_from_string(), is provided to parse a string containing a valid mode name into the appropriate dm_filemapd_mode_t value.
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INSTALL_DMFILEMAPD_TARGETS = install_dmfilemapd_dynamic
CLEAN_TARGETS = dmfilemapd.static
CFLOW_LIST = $(SOURCES)
CFLOW_LIST_TARGET = $(LIB_NAME).cflow
CFLOW_TARGET = dmfilemapd
include $(top_builddir)/make.tmpl
all: device-mapper
device-mapper: $(TARGETS)
LIBS += -ldevmapper
daemons: cleanup dmeventd references from dmfilemapd/Makefile.in
2017-03-10 20:12:04 +03:00
CFLAGS_dmfilemapd.o += $(EXTRA_EXEC_CFLAGS)
daemons: add dmfilemapd Add a daemon that can be launched to monitor a group of regions corresponding to the extents of a file, and to update the regions as the file's allocation changes. The daemon is intended to be started from a library interface, but can also be run from the command line: dmfilemapd <fd> <group_id> <path> <mode> [<foreground>[<log_level>]] Where fd is a file descriptor open on the mapped file, group_id is the group identifier of the mapped group and mode is either "inode" or "path". E.g.: # dmfilemapd 3 0 vm.img inode 1 3 3<vm.img ... If foreground is non-zero, the daemon will not fork to run in the background. If verbose is non-zero, libdm and daemon log messages will be printed. It is possible for the group identifier to change when regions are re-mapped: this occurs when the group leader is deleted (regroup=1 in dm_stats_update_regions_from_fd()), and another region is created before the daemon has a chance to recreate the leader region. The operation is inherently racey since there is currently no way to atomically move or resize a dm_stats region while retaining its region_id. Detect this condition and update the group_id value stored in the filemap monitor. A function is also provided in the the stats API to launch the filemap monitoring daemon: int dm_stats_start_filemapd(int fd, uint64_t group_id, const char *path, dm_filemapd_mode_t mode, unsigned foreground, unsigned verbose); This carries out the first fork and execs dmfilemapd with the arguments specified. A dm_filemapd_mode_t value is specified by the mode argument: either DM_FILEMAPD_FOLLOW_INODE, or DM_FILEMAPD_FOLLOW_PATH. A helper function, dm_filemapd_mode_from_string(), is provided to parse a string containing a valid mode name into the appropriate dm_filemapd_mode_t value.
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dmfilemapd: $(LIB_SHARED) dmfilemapd.o
$(CC) $(CFLAGS) $(LDFLAGS) $(EXTRA_EXEC_LDFLAGS) $(ELDFLAGS) -L. -o $@ dmfilemapd.o \
$(DL_LIBS) $(LVMLIBS) $(LIBS) -rdynamic
dmfilemapd.static: $(LIB_STATIC) dmfilemapd.o $(interfacebuilddir)/libdevmapper.a
$(CC) $(CFLAGS) $(LDFLAGS) $(ELDFLAGS) -static -L. -L$(interfacebuilddir) -o $@ \
dmfilemapd.o $(DL_LIBS) $(LVMLIBS) $(LIBS) $(STATIC_LIBS)
ifneq ("$(CFLOW_CMD)", "")
CFLOW_SOURCES = $(addprefix $(srcdir)/, $(SOURCES))
-include $(top_builddir)/libdm/libdevmapper.cflow
-include $(top_builddir)/lib/liblvm-internal.cflow
-include $(top_builddir)/lib/liblvm2cmd.cflow
-include $(top_builddir)/daemons/dmfilemapd/$(LIB_NAME).cflow
endif
install_dmfilemapd_dynamic: dmfilemapd
$(INSTALL_PROGRAM) -D $< $(sbindir)/$(<F)
install_dmfilemapd_static: dmfilemapd.static
$(INSTALL_PROGRAM) -D $< $(staticdir)/$(<F)
install_dmfilemapd: $(INSTALL_DMEVENTD_TARGETS)
install: install_dmfilemapd
install_device-mapper: install_dmfilemapd
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