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o Allow the definition of read-only devices (ioctl interface only) (Joe)

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o Add version number to ioctl structure with error on kernel/library mismatch
This commit is contained in:
Alasdair Kergon 2002-01-02 19:01:09 +00:00
parent ba57d1f89b
commit f1568304e0
2 changed files with 17 additions and 0 deletions
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16
libdm/Makefile.in
View File

@ -17,6 +17,7 @@ TARGETS=$(interface)/libdevmapper.so
include ../make.tmpl include ../make.tmpl
install: @interface@/libdevmapper.so install: @interface@/libdevmapper.so
$(INSTALL) -D -o $(OWNER) -g $(GROUP) -m 555 $(STRIP) $< \ $(INSTALL) -D -o $(OWNER) -g $(GROUP) -m 555 $(STRIP) $< \
$(libdir)/libdevmapper.so.$(VERSION) $(libdir)/libdevmapper.so.$(VERSION)
@ -26,3 +27,18 @@ install: @interface@/libdevmapper.so
.PHONY: install .PHONY: install
ifeq ($(interface),ioctl)
ioctl/libdevmapper.o: ioctl_version
ioctl_version: ioctl/libdevmapper.c
@echo Checking library version compatible with kernel version in dm-ioctl.h
test "$(VERSION)" = \
"$(shell $(CC) -E -dM $(INCLUDES) $(CFLAGS) \
ioctl/libdevmapper.c | \
awk -F '[ \t\"]+' '/DM_IOCTL_VERSION/ {print $$3}' )"
.PHONY: ioctl_version
endif

1
libdm/ioctl/libdevmapper.c
View File

@ -150,6 +150,7 @@ static struct dm_ioctl *_flatten(struct dm_task *dmt)
if (!(dmi = malloc(len))) if (!(dmi = malloc(len)))
return NULL; return NULL;
strncpy(dmi->version, DM_IOCTL_VERSION, sizeof(dmi->version));
dmi->data_size = len; dmi->data_size = len;
strncpy(dmi->name, dmt->dev_name, sizeof(dmi->name)); strncpy(dmi->name, dmt->dev_name, sizeof(dmi->name));
dmi->suspend = (dmt->type == DM_DEVICE_SUSPEND) ? 1 : 0; dmi->suspend = (dmt->type == DM_DEVICE_SUSPEND) ? 1 : 0;