btrfs-progs/common/path-utils.h
David Sterba 922eaa7b54 btrfs-progs: build: fix linking with static libmount
The libmount dependency has been added in commit 61ecaff036
("btrfs-progs: build: add libmount dependency"), and static build got
broken. There are functions that do basically the same thing and also
share the name, which in turn fails at link time.

  ld: /../lib64/libmount.a(libcommon_la-canonicalize.o): in function `canonicalize_dm_name':
  util-linux-2.34/lib/canonicalize.c:58: multiple definition of `canonicalize_dm_name';
	  common/path-utils.static.o:btrfs-progs/common/path-utils.c:286: first defined here

In case the collision can be resolved by renaming, it's done
(canonicalize_path and parse_size). There are 2 symbols from selinux
that are substituted by a weak aliases during the static build.

There's one new warning due to use of getgrnam_r in libmount that
depends on dynamic linking and may not work properly with static build.
We're not using the related functions directly or indirectly, so it
should be safe to ignore the warnings.

  ld: ../lib64/libmount.a(la-utils.o): in function `mnt_get_gid':
  util-linux-2.34/libmount/src/utils.c:625: warning: Using 'getgrnam_r' in statically linked applications
  +requires at runtime the shared libraries from the glibc version used for linking

Issue: #333
Signed-off-by: David Sterba <dsterba@suse.com>
2021-01-25 23:31:56 +01:00

44 lines
1.6 KiB
C

/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#ifndef __BTRFS_PATH_UTILS_H__
#define __BTRFS_PATH_UTILS_H__
#include <sys/types.h>
char *path_canonicalize_dm_name(const char *ptname);
char *path_canonicalize(const char *path);
int arg_copy_path(char *dest, const char *src, int destlen);
int path_cat_out(char *out, const char *p1, const char *p2);
int path_cat3_out(char *out, const char *p1, const char *p2, const char *p3);
char *__strncpy_null(char *dest, const char *src, size_t n);
/* Helper to always get proper size of the destination string */
#define strncpy_null(dest, src) __strncpy_null(dest, src, sizeof(dest))
int path_is_block_device(const char *file);
int path_is_mount_point(const char *file);
int path_exists(const char *file);
int path_is_reg_file(const char *path);
int path_is_dir(const char *path);
int is_same_loop_file(const char *a, const char *b);
int path_is_reg_or_block_device(const char *filename);
int test_issubvolname(const char *name);
#endif