| Commit message (Collapse) | Author | Age | Files | Lines |
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This patch is essentially the same as the previous version, but has
been respun to fix up some merge conflicts with some of Chuck's
recent changes.
When we first added tirpc support, we took a "big hammer" approach, and
had it add libtirpc to $LIBS. That had the effect of making it so that
that library was linked into every binary. That's unnecessary, and
wasteful with memory.
Don't let AC_CHECK_LIB add -ltirpc to $LIBS. Instead, have the autoconf
tests set $(LIBTIRPC) in the makefiles, and have the programs that
need it explicitly include that library. In the event that we're not
using libtirpc, then set $LIBTIRPC to a blank string.
This necessitates a change to the bindresvport_sa check too. Since that
library is no longer included in $LIBS, we need to convert that check
to use AC_CHECK_LIB instead of AC_CHECK_FUNCS.
This patch also fixes a subtle bug. If the library was usable, but the
includes were not, the test would set $enable_tirpc to "no", but
HAVE_LIBTIRPC would still be true. That configuration would likely
fail to build.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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To support FedFS and NFS junctions without introducing additional
build-time or run-time dependencies on nfs-utils, the community has
chosen to use a dynamically loadable library to handle junction
resolution.
There is one plug-in library for mountd that will handle any NFS-
related junction type. Currently there are two types:
o nfs-basic locally stored file set location data, and
o nfs-fedfs file set location data stored on an LDAP server
mountd's support for this library is enabled at build time by the
presence of the junction API definition header:
/usr/include/nfs-plugin.h
If this header is not found on the build system, mountd will build
without junction support, and will operate as before.
Note that mountd does not cache junction resolution results. NFSD
already caches these results in its exports cache. Thus each time
NFSD calls up to mountd, it is, in essence, requesting a fresh
junction resolution operation, not a cached response.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up: xlog() already adds a newline to the end of each line of
output. Remove the superfluous newline from a number of xlog()
call sites in mountd.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Valgrind reports that the memory allocated for eep's e_hostname field
was not being freed. eep is not visible outside of v4root_create(),
so we don't need to strdup() that string.
Introduced by commit 3b777b0 "exports: NFSv4 pseudoroot support
routines" (Dec 1, 2009).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Fixed the usage of strcmp in the duplicate check in insert groups.
Fixes an issue with showmount and other commands that required
the group information.
Signed-off-by: Matthew Treinish <treinish@linux.vnet.ibm.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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At RHEL, if user set port for mountd at /etc/services as
"mount 12345/tcp", mountd should be bind to 12345, but the
latest nfs-utils, mountd get a rand port, not 12345.
This patch make sure mountd be bind to the port which was set
at /etc/service.
Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Now we can move these big switch statements into helper functions.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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A large part of nfsd_fh() is concerned with extracting
fsid-type-specific information from the fsid, then matching that
information with information from the export list and the filesystem.
Moving all that information into one struct will allow some further
simplifications.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If a parent is exported with crossmnt, and if a child is also explicitly
exported, then both exports could potentially produce matches in this
loop; that isn't a bug.
Instead of warning and ignoring the second match we find, we should
instead prefer whichever export is deeper in the tree, so that
children's options can override those of their parents.
Reported-by: Olga Kornievskaia <aglo@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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When we get into auth_unix_gid at the second time, groups_len
is not 0 and ngroups variable leave as 0. Then we use ngroups
in getgrouplist that fails in this case. This patch fixes it.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit 5604b35a6 introduced a number of missing initializer
warnings that were missed. This patch removes those warnings.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Previously, when writing to /proc/net/rpc/*/channel, if a cache line
were larger than the default buffer size (likely 1024 bytes), mountd
and svcgssd would split writes into a number of buffer-sized writes.
Each of these writes would get an EINVAL error back from the kernel
procfs handle (it expects line-oriented input and does not account for
multiple/split writes), and no cache update would occur.
When such behavior occurs, NFS clients depending on mountd to finish
the cache operation would block/hang, or receive EPERM, depending on
the context of the operation. This is likely to happen if a user is a
member of a large (~100-200) number of groups.
Instead, every fopen() on the procfs files in question is followed by
a call to setvbuf(), using a per-file dedicated buffer of
RPC_CHAN_BUF_SIZE length.
Really, mountd should not be using stdio-style buffered file operations
on files in /proc to begin with. A better solution would be to use
internally managed buffers and calls to write() instead of these stdio
calls, but that would be a more extensive change; so this is proposed
as a quick and not-so-dirty fix in the meantime.
Signed-off-by: Sean Finney <sean.finney@sonyericsson.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Previously, in auth_unix_gid, group lists were stored in an array of
hard-coded length 100, and in the situation that the group lists for a
particular call were too large, the array was swapped with a dynamically
allocated/freed buffer. For environments where users are commonly in
a large number of groups, this isn't an ideal approach.
Instead, use malloc/realloc to grow the list on an as-needed basis.
Signed-off-by: Sean Finney <sean.finney@sonyericsson.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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From: Trond Myklebust <Trond.Myklebust@netapp.com>
The fedfs ldap server will specify a ttl for its entries.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This is a refactoring change only. There should be no change in
behavior.
Original patch had updates to utils/mountd/junctions.c, which no
longer exists. These are not included here.
Create a macro for the default cache TTL, which is used in several
places besides the export cache.
Make e_ttl unsigned.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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v4root.c:176:9: warning: variable 'ret' set but not used
Signed-off-by: Steve Dickson <steved@redhat.com>
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A unallocated piece of memory, instead of a NULL point, was being
used to initialize a ->next point in the mount link list which
caused a segfault after a few remote accesses via the showmount
command.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Updated the rpc.mountd man page to no longer reference
v3 as the "newer" version and also mentioned v4 as
a supported version.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clear stale MNT registrations before mountd tries to create fresh
listeners, to ensure that mountd starts. This is also what statd does.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Document IPv6 support in rpc.mountd and exportfs, and clarify existing
language in the man page.
Clean up: Use bold consistently for program names, and italics
consistently for file names. Use "rpc.mountd" consistently as the
name of the mountd daemon.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up: The MNT protocol has its own enum type defining error
status values. While the values can be the same as the NFSERR enum
type on some systems, it's not guaranteed to be true everywhere.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up: rpc.mountd is no longer known as kmountd. Use the program's
basename rather than the full pathname for the usage message. Display
a version message at start up similar to statd's.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Fix a long standing bug: when my_svc_run() returns, mountd should
unregister itself with the local rpcbind so that it can subsequently
start cleanly.
Log a more helpful error message in this case.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If TI-RPC is available, use it to create mountd's svc listener. If
not, use the old function, rpc_init(), to create mountd's listener.
IPv6 can be supported if TI-RPC is available. In this case,
/etc/netconfig is searched to determine which transports to advertise.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Ensure users and programmers specify NFS version numbers correctly.
This also makes the next patch more clean.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up: Squelch compiler warnings and document public parts of
cache API.
cache.c: At top level:
cache.c:67: warning: no previous prototype for auth_unix_ip
cache.c:123: warning: no previous prototype for auth_unix_gid
cache.c:217: warning: no previous prototype for get_uuid
cache.c:247: warning: no previous prototype for uuid_by_path
cache.c:326: warning: no previous prototype for nfsd_fh
cache.c:745: warning: no previous prototype for nfsd_export
cache.c:820: warning: no previous prototype for cache_open
cache.c:832: warning: no previous prototype for cache_set_fd
cache.c:841: warning: no previous prototype for
cache_process_req
cache.c:921: warning: no previous prototype for cache_export
cache.c:953: warning: no previous prototype for
cache_get_filehandle
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Replace inet_aton(3) and gethostbyaddr(3) calls in mountlist_list()
with calls to the new host_foo() DNS helpers.
The new functions will support IPv6 without additional changes, once
IPv6 is enabled in the generic hostname helpers.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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I'm about to replace inet_aton(3)/gethostbyaddr(3) with
host_pton()/host_canonname() in mountlist_list().
Since host_canonname() returns a string allocated with strdup(3)
instead of xstrdup(), mountlist_list() must now deal with memory
exhaustion properly.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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I'm about to add a second bit of logic that needs to free all
mountlist records, so introduce a helper for freeing them.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Replace IPv4-specific code in the mountlist_del_all() path with code
that is address family agnostic.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Replace IPv4-specific code with use of our generic hostname helpers
in the routines that handle incoming MNT RPC requests.
These functions will support IPv6 without additional changes, once
IPv6 is enabled in the generic hostname helpers.
As part of this update, I've modified all of mountd's _svc routines
to use a debug message format that is consistent with statd. It may
be overkill for some of these; if so we can pull them out later.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Make the entire auth_authenticate() code path address-family agnostic.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This is more of a clean-up than a behavioral change.
POSIX requires that a "struct sockaddr" is the same size as a "struct
sockaddr_in". Therefore, a variable or field of type "struct sockaddr"
cannot contain an AF_INET6 address. However, "struct sockaddr *" is
often used to reference a generic (ie non-address family specific)
socket address, generating some confusion about this.
The nfsctl_arg struct uses a struct sockaddr (not a pointer) to pass
the client's IP address to the kernel. This means the legacy nfsctl()
kernel API can never support IPv6. Fortunately for us, this legacy
interface was replaced by a text-based cache interface a few years
back. We don't need to support non-AF_INET addresses here.
The getfh() functions in nfs-utils provide a handy C API for the
kernel's nfsctl interface. The getfh() functions still take a struct
sockaddr *, though, and that can imply that a non-IPv4 address can be
passed via this API. To make it abundantly clear that only IPv4
addresses can be used with this interface, change the synopses of
getfh() and friends to take a struct sockaddr_in * instead of a struct
sockaddr * .
This makes these functions conform with other places in mountd and
exportfs that already grok the difference between a struct sockaddr
and a struct sockaddr_in.
While we're here...
Introduce some nice documenting comments for the get_fh() functions,
and...
Since mountd will support IPv6 in the near future, assert that the
family of client addresses passed to this API is indeed AF_INET, in
order to prevent non-AF_INET addresses from ever being passed to the
legacy nfsctl() interface.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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mountd.c: In function 'mount_null_1_svc':
mountd.c:195: warning: unused parameter 'rqstp'
mountd.c:195: warning: unused parameter 'argp'
mountd.c:195: warning: unused parameter 'resp'
mountd.c: In function 'mount_dump_1_svc':
mountd.c:213: warning: unused parameter 'argp'
mountd.c: In function 'mount_umnt_1_svc':
mountd.c:224: warning: unused parameter 'resp'
mountd.c: In function 'mount_umntall_1_svc':
mountd.c:248: warning: unused parameter 'argp'
mountd.c:248: warning: unused parameter 'resp'
mountd.c: In function 'mount_export_1_svc':
mountd.c:258: warning: unused parameter 'argp'
mountd.c: In function 'mount_exportall_1_svc':
mountd.c:269: warning: unused parameter 'argp'
mountd.c: In function 'mount_dump_1_svc':
mountd.c:216: warning: unused parameter 'argp'
mountd.c: In function 'mount_umnt_1_svc':
mountd.c:227: warning: unused parameter 'resp'
mountd.c: In function 'mount_umntall_1_svc':
mountd.c:251: warning: unused parameter 'argp'
mountd.c:251: warning: unused parameter 'resp'
mountd.c: In function 'mount_export_1_svc':
mountd.c:261: warning: unused parameter 'argp'
mountd.c: In function 'mount_exportall_1_svc':
mountd.c:272: warning: unused parameter 'argp'
Signed-off-by: Steve Dickson <steved@redhat.com>
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cache.c:812: warning: missing initializer
cache.c:812: warning: (near initialization for 'cachelist[0].f')
cache.c:813: warning: missing initializer
cache.c:813: warning: (near initialization for 'cachelist[1].f')
cache.c:814: warning: missing initializer
cache.c:814: warning: (near initialization for 'cachelist[2].f')
cache.c:815: warning: missing initializer
cache.c:815: warning: (near initialization for 'cachelist[3].f')
cache.c:816: warning: missing initializer
cache.c:816: warning: (near initialization for 'cachelist[4].f')
cache.c: In function 'cache_export_ent':
cache.c:887: warning: comparison between signed and unsigned integer expressions
cache.c:907: warning: comparison between signed and unsigned integer expressions
Signed-off-by: Steve Dickson <steved@redhat.com>
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fsloc.c: In function 'replicas_lookup':
fsloc.c:149: warning: unused parameter 'key'
Signed-off-by: Steve Dickson <steved@redhat.com>
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Fixed Small typo in the new fs uuid comparison code
Signed-off-by: Steve Dickson <steved@redhat.com>
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struct hostent can store either IPv4 or IPv6 addresses, but it can't
store both address families concurrently for the same host. Neither
can hostent deal with parts of socket addresses that are outside of
the sin{,6}_addr field.
Replace the use of "struct hostent" everywhere in libexport.a, mountd,
and exportfs with "struct addrinfo". This is a large change, but
there are so many strong dependencies on struct hostent that this
can't easily be broken into smaller pieces.
One benefit of this change is that hostent_dup() is no longer
required, since the results of getaddrinfo(3) are already dynamically
allocated.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Introduce DNS query helpers based on getaddrinfo(3) and
getnameinfo(3). These will eventually replace the existing
hostent-based functions in support/export/hostname.c.
Put some of these new helpers to immediate use, where convenient.
As they are part of libexport.a, I've added the forward declarations
for these new functions in exportfs.h rather than misc.h, where the
hostent-based forward declarations are currently.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If you export two subvolumes of a btrfs filesystem, they will both be
given the same uuid so lookups will be confused.
blkid cannot differentiate the two, so we must use the fsid from
statfs64 to identify the filesystem.
We cannot tell if blkid or statfs is best without knowing internal
details of the filesystem in question, so we need to encode specific
knowledge of btrfs in mountd. This is unfortunate.
To ensure smooth handling of this and possible future changes in uuid
generation, we add infrastructure for multiple different uuids to be
recognised on old filehandles, but only the preferred on is used on
new filehandles.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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and one for NFSv3 (MOUNTv3)
When --no-nfs-version requests an NFS version to be disabled, the
code actually disabled the MOUNT version. This works is several cases,
but requires --no-nfs-version 1 to completely disable NFSv2, which
is wrong.
So if we do disable 1, 2, and 3. mountd complain and won't run, it
is not possible to run just v4 - i.e. not listening for MOUNT requests
at all (as v4 doesn't need them).
So change the handling of "--no-nfs-version 2" it disable MOUNTv1 as
well as
MOUNTv2, and allow mountd to continue running as long as one of
NFSv2 NFSv3 NFSv4 is enabled.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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To store non-AF_INET addresses in the nfs_client structure, we need to
use more than in_addr for the m_addrlist field. Make m_addrlist
larger, then add a few helper functions to handle type casting and
array indexing cleanly.
We could treat the nfs_client address list as if all the addresses
in the list were the same family. This might work for MCL_SUBNETWORK
type nfs_clients. However, during the transition to IPv6, most hosts
will have at least one IPv4 and one IPv6 address. For MCL_FQDN, I
think we need to have the ability to store addresses from both
families in one nfs_client.
Additionally, IPv6 scope IDs are not part of struct sin6_addr. To
support link-local IPv6 addresses and the like, a scope ID must be
stored.
Thus, each slot in the address list needs to be capable of storing an
entire socket address, and not simply the network address part.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Part of the reason for the previous bug was confusion between "subpath"
and "path"; which is the shorter path, and which the longer?
"child" and "parent" seem less ambiguous.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This was obviously wrong, since path[strlen(path)] == '\0'
should always be true.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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A uid or gid should be represented as unsigned, not signed.
The conversion to signed here could cause a hang on access by an unknown
user to a server running mountd with --manage-gids; such a user is
likely to be mapped to 232-1, which may be converted to 231-1 when
represented as an int, resulting in a downcall for uid 231-1, hence the
original rpc hanging forever waiting for a cache downcall for 232-1.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Don't leak this file descriptor if stat should fail.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Assuming the tcp_wrappers library can actually support IPv6 addresses,
here's a crack at IPv6 support in nfs-utils' TCP wrapper shim.
Some reorganization is done to limit the number of times that @sap
is converted to a presentation address string.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Eliminate these compiler warnings:
tcpwrapper.c: In function logit
tcpwrapper.c:225: warning: unused parameter procnum
tcpwrapper.c:225: warning: unused parameter prognum
Actually, @procnum is not used anywhere in our tcpwrapper.c, so
let's just get rid of it.
Since there is only one logit() call site in tcpwrapper.c, the macro
wrapper just adds needless clutter. Let's get rid of that too.
Finally, both mountd and statd now use xlog(), which adds an
appropriate program name prefix to every message. Replace the
open-coded syslog(2) call with an xlog() call in order to
consistently identify the RPC service reporting the intrusion.
Since logit() no longer references "deny_severity" and no nfs-utils
caller sets either allow_severity or deny_severity, we remove them.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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We've hidden v4root exports from get_exportlist (hence from the
showmount command), but not from other mountd operations--allowing
clients to attempt to mount exports when they should be getting an
immediate error.
Symptoms observed on a linux client were that a mount that previously
would have returned an error immediately now hung. This restores the
previous behavior.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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