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| author | Karel Zak <kzak@redhat.com> | 2011-04-06 12:39:21 -0400 |
|---|---|---|
| committer | Steve Dickson <steved@redhat.com> | 2011-04-06 12:40:30 -0400 |
| commit | a99269230a0e77e7bed4fa31c9547f0d61c7f206 (patch) | |
| tree | c1d1f4647ab24c91fe931053f350f0dd11e758c2 /configure.ac | |
| parent | c01e5ca6179b8f5b041605d9bbd75a0f76812d54 (diff) | |
| download | nfs-utils-a99269230a0e77e7bed4fa31c9547f0d61c7f206.tar.gz nfs-utils-a99269230a0e77e7bed4fa31c9547f0d61c7f206.tar.xz nfs-utils-a99269230a0e77e7bed4fa31c9547f0d61c7f206.zip | |
mount: add --enable-libmount-mount
This patch allows to link mount.nfs with libmount from util-linux >=
v2.19. The new libmount based code is enabled by CONFIG_LIBMOUNT and
is stored in mount_libmount.c. The old code is not affected by this
change.
The libmount does not have officially stable API yet, so the
--enable-libmount-mount is marked as experimental in the configure
help output.
The ./configure option is the same as we use in util-linux to enable
support for libmount in mount(8).
The addr= (and some other options necessary for remount/umount) are
stored to /etc/mtab or to /dev/.mount/utab. The utab file is *private*
libmount file. It's possible that some mount options (for example
user=) will be moved to kernel, so the utab will not be necessary.
About libmount:
* supports systems without and with regular /etc/mtab
* does not store VFS and FS mount options in userspace
* manages user= option and evaluate permissions
* parses VFS mount options and generate MS_* flags
* parses /etc/{fstab,mtab}, /proc/mounts or /proc/self/mountinfo
* long-term goal is to use the same code in all mount.<type> helpers
Note, use
LIBMOUNT_DEBUG=0xffff mount.nfs foo:/path /path
to debug the library.
On systems with util-linux v2.19 the findmnt(8) command uses libmount
to list all/selected mount points:
$ findmnt /path
$ findmnt --mtab /path
the --mtab appends userspace mount options (e.g. user=) to the output.
CC: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 92833e3..d8972e4 100644 --- a/configure.ac +++ b/configure.ac @@ -132,6 +132,15 @@ AC_ARG_ENABLE(mount, enable_mount=$enableval, enable_mount=yes) AM_CONDITIONAL(CONFIG_MOUNT, [test "$enable_mount" = "yes"]) + +if test "$enable_mount" = yes; then + AC_ARG_ENABLE(libmount-mount, + [AC_HELP_STRING([--enable-libmount-mount], + [Link mount.nfs with libmount (EXPERIMENTAL)])], + enable_libmount=yes, + enable_libmount=no) +fi + AC_ARG_ENABLE(tirpc, [AC_HELP_STRING([--enable-tirpc], [enable use of TI-RPC @<:@default=yes@:>@])], @@ -285,6 +294,13 @@ AC_SUBST(LIBCRYPT) AC_SUBST(LIBBSD) AC_SUBST(LIBBLKID) +if test "$enable_libmount" != no; then + AC_CHECK_LIB(mount, mnt_context_do_mount, [LIBMOUNT="-lmount"], AC_MSG_ERROR([libmount needed])) + AC_CHECK_HEADER(libmount/libmount.h, , AC_MSG_ERROR([Cannot find libmount header file libmount/libmount.h])) +fi +AM_CONDITIONAL(CONFIG_LIBMOUNT, [test "$enable_libmount" = "yes"]) +AC_SUBST(LIBMOUNT) + if test "$enable_gss" = yes; then dnl 'gss' requires getnameinfo - at least for gssd_proc.c AC_CHECK_FUNC([getnameinfo], , [AC_MSG_ERROR([GSSAPI support requires 'getnameinfo' function])]) |