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authorJohannes Berg <johannes.berg@intel.com>2023-02-10 22:05:08 +0100
committerRichard Weinberger <richard@nod.at>2023-04-20 23:04:40 +0200
commit8c6174503c7b7134c22072b45f92724c8a959f06 (patch)
tree64a2cd82fe4eba4e975d027f1b6640e053b7ac05 /fs/hostfs
parentce1831fe2febf7a3a03fda43b41d7589caa022cd (diff)
um: hostfs: define our own API boundary
Instead of exporting the set of functions provided by glibc that are needed for hostfs_user.c, just build that into the kernel image whenever hostfs is built, and then export _those_ functions cleanly, to be independent of the libc implementation. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/hostfs')
-rw-r--r--fs/hostfs/Makefile6
-rw-r--r--fs/hostfs/hostfs_user_exp.c28
2 files changed, 32 insertions, 2 deletions
diff --git a/fs/hostfs/Makefile b/fs/hostfs/Makefile
index 587bcd6e50a3..16be592e8085 100644
--- a/fs/hostfs/Makefile
+++ b/fs/hostfs/Makefile
@@ -3,9 +3,11 @@
# Licensed under the GPL
#
-hostfs-objs := hostfs_kern.o hostfs_user.o
+hostfs-objs := hostfs_kern.o
-obj-y :=
+hostfs-builtin-$(CONFIG_HOSTFS) += hostfs_user.o hostfs_user_exp.o
+
+obj-y := $(hostfs-builtin-y) $(hostfs-builtin-m)
obj-$(CONFIG_HOSTFS) += hostfs.o
include $(srctree)/arch/um/scripts/Makefile.rules
diff --git a/fs/hostfs/hostfs_user_exp.c b/fs/hostfs/hostfs_user_exp.c
new file mode 100644
index 000000000000..250c91c55c46
--- /dev/null
+++ b/fs/hostfs/hostfs_user_exp.c
@@ -0,0 +1,28 @@
+#include <linux/module.h>
+#include "hostfs.h"
+
+EXPORT_SYMBOL_GPL(stat_file);
+EXPORT_SYMBOL_GPL(access_file);
+EXPORT_SYMBOL_GPL(open_file);
+EXPORT_SYMBOL_GPL(open_dir);
+EXPORT_SYMBOL_GPL(seek_dir);
+EXPORT_SYMBOL_GPL(read_dir);
+EXPORT_SYMBOL_GPL(read_file);
+EXPORT_SYMBOL_GPL(write_file);
+EXPORT_SYMBOL_GPL(lseek_file);
+EXPORT_SYMBOL_GPL(fsync_file);
+EXPORT_SYMBOL_GPL(replace_file);
+EXPORT_SYMBOL_GPL(close_file);
+EXPORT_SYMBOL_GPL(close_dir);
+EXPORT_SYMBOL_GPL(file_create);
+EXPORT_SYMBOL_GPL(set_attr);
+EXPORT_SYMBOL_GPL(make_symlink);
+EXPORT_SYMBOL_GPL(unlink_file);
+EXPORT_SYMBOL_GPL(do_mkdir);
+EXPORT_SYMBOL_GPL(hostfs_do_rmdir);
+EXPORT_SYMBOL_GPL(do_mknod);
+EXPORT_SYMBOL_GPL(link_file);
+EXPORT_SYMBOL_GPL(hostfs_do_readlink);
+EXPORT_SYMBOL_GPL(rename_file);
+EXPORT_SYMBOL_GPL(rename2_file);
+EXPORT_SYMBOL_GPL(do_statfs);