| Commit message (Collapse) | Author | Age | Files | Lines |
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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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We don't want to append "vers=4" or perform any negotiation if the
"remount" mount option was specified. It will just end in tears.
This attempts to address
https://qa.mandriva.com/show_bug.cgi?id=60311
and
https://bugzilla.linux-nfs.org/show_bug.cgi?id=187
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up.
I'm beginning to agree with Bruce and Steve's assessment that the
fallthrough switch case in nfs_try_mount() is more difficult to read
and understand than it needs to be. The logic that manages
negotiating NFS version and protocol settings is getting more complex
over time anyway.
So let's split the autonegotiation piece out of nfs_try_mount().
We can reduce indenting, and use cleaner switch-based logic. Also,
adding more comments can only help.
Neil also suggested replacing the pre-call "errno = 0" trick. The
lower-level functions may try to mount several times (given a list of
addresses to try). errno could be set by any of those. The mount
request will succeed at some point, and "success" is returned, but
errno is still set to some non-zero value.
The kernel version check in nfs_try_mount() is more or less loop
invariant: it's impossible for the result of that test to change
between retries. So we should be able to safely move it to the logic
that sets the initial value of mi->version.
This patch is not supposed to cause a behavioral change.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The type of idmap_client is defined by idmap_client.ic_id for nfs,
so nfsd should have the same style.
Signed-off-by: Bian Naimeng <biannm@cn.fujitsu.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Benny Halevy <bhalevy@panasas.com>
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Signed-off-by: Steve Dickson <steved@redhat.com>
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At some point, when the kernel starts to support "vers=4,rdma" mounts,
we will want the mount.nfs command to pass "vers=4,rdma" mounts
instead of rejecting them.
Assuming that the kernel will reject these today with EPROTONOSUPPORT,
that would cause the version fallback logic to go to "vers=3,rdma"
automatically. So the extra check we have now is not needed anyway.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The kernel NFS client's mount option parser recognizes a stand-alone
"rdma" mount option, similar to the legacy "udp" and "tcp" options.
The mount.nfs command text-based mount option parser used to pass
"rdma" straight to the kernel, but since we've started handling MNT in
the kernel instead of in user space, "rdma" on the command line has
not worked.
Until now, no-one has noticed, especially since an "rdma" mount option
isn't documented in nfs(5).
Support "rdma" in mount.nfs command, and document it in nfs(5).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up: Now that nfs_get_proto() can recognize "rdma" we can re-use
nfs_nfs_protocol() instead of ad hoc checks for "proto=rdma".
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The mount.nfs command must recognize the values of "rdma" and "rdma6"
with the "proto=" mount option. Typically the mount.nfs command
relies on libtirpc or getprotobyname(3) to recognize netids and
translate them to protocol numbers.
RFCs 5665 and 5666 define the "rdma" and "rdma6" netids. IANA defines
a specific port number for NFS over RDMA (20049), but has not provided
a protocol name and number for RDMA transports, and is not expected
to. The best we can do is translate these by hand, as needed, to get
RDMA mount requests to the kernel without erroring out.
Only the forward translation is needed until such time that "rdma" and
"rdma6" start to appear in rpcbind registries. For now, the version
and transport negotiation logic is skipped, avoiding rpcbind queries
for RDMA mounts.
Note: As of kernel 2.6.36, the kernel's NFS over RDMA transport
capability does not support IPv6.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Guillaume Rousse <Guillaume.Rousse@inria.fr>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Instead of a single function that can handle both AF_INET and AF_INET6
addresses, two separate functions might be cleaner.
The original plan was to keep code redundancy at a minimum, but the
resulting code was cumbersome at best. I think I've traded a little
extra code for something that will be much easier to read, understand,
and maintain.
I've also eliminated the "#if / #endif" instances inside the functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Introduce support for IPv6 in client_check()'s helpers. The local
addrs_match() twins are no longer needed since we can use
nfs_compare_addrs() now.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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To parse and store an IPv6 host or subnet address, init_netmask()
needs to handle 128 bit subnet masks.
Unfortunately what once was a pretty simple little function has grown
much larger. This logic must now not only parse IPv6 addresses
correctly, but must also distinguish between IPv4 and IPv6.
To avoid code duplication, I'm "bending" the cardinal rule of not
using "#ifdef" inside functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Retire the slash32 logic in inet_netmask() in favor of a more generic
netmask parser that can support IPv6 addresses.
If an invalid IP address string is given to inet_addr(3), it returns
INADDR_NONE, which is actually a "valid" address (255.255.255.255).
We're none the wiser to the substitution until something breaks later.
This patch provides better sanity checking of the parsed address, now
that such an error can be reported to client_init()'s callers.
We can also check the prefixlen value a little more carefully as well.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Take the first step towards making it possible to parse either IPv4 or
IPv6 addresses in client_init(). It won't handle IPv6 until
host_pton() has IPv6 support enabled, and it still doesn't deal with
IPv6 netmasks yet.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The current open-coded parsing logic in client_gettype() will be hard
to modify to recognize IPv6 addresses. Use a more generic mechanism
for detecting IP presentation addresses.
IPv6 will be enabled automatically in client_gettype() when host_pton()
is changed to support IPv6 addresses.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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exportfs already invokes xlog_open() because libexport.a uses xlog()
exclusively for error reporting and debugging messages. If we can
use xlog() throughout exportfs itself, that enables xlog debugging
messages everywhere in the code path.
In addition, use xlog() instead of fprintf(stderr) for reporting
errors in exportfs.c, to be consistent with libexport.a and other
components of nfs-utils.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up: No calls to xmalloc() or xstrdup() here. No need for the
double #include of xmalloc.h.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit 8ce130c4 switched in the new statd_canonical_name() function
that constructs a "unique" name statd can use to uniquely identify a
monitor record.
The legacy statd would monitor a client that sent an IP address with
no reverse map as its caller_name. To remain bug-for-bug compatible,
allow this case in the new statd.
This shouldn't be a problem: statd_canonical_name() needs to create
a unique name for the monitored host so it can keep track of monitor
requests from the same remote. The IP address itself should work as
well as the host's canonical name, in case there is no reverse
mapping.
We still enforce the requirement that a mon_name that is a DNS name
must have a forward map to an IP address.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Neil Brown reports that recent changes to replace
gethostby{addr,name}(3) with get{addr,info}name(3) may have
inadvertently broken netgroup support.
There used to be a gethostbyaddr(3) call in the third paragraph in
check_netgroup(). The reason for that gethostbyaddr(3) call was that
the first innetgr(3) call has already confirmed that hname is not a
member of the netgroup. We also need to confirm that, if hname
happens to be an IP address, the hostname bound to that IP address is
not a member of the netgroup, either.
Fix this by restoring appropriate address to hostname mapping of hname
before retrying the innetgr(3) call.
See http://marc.info/?l=linux-nfs&m=128084830214653&w=2 .
Introduced by commit 0509d3428f523776ddd9d6e9fa318587d3ec7d84.
Reviewed-by: Neil Brown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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check_netgroup() is going to be changed to free dynamically
allocated resources before it returns, so a common
exit point is needed.
Reviewed-by: Neil Brown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Steve Dickson <steved@redhat.com>
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nfsctl.c: In function 'expsetup':
nfsctl.c:112: warning: signed and unsigned type in conditional expression
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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idmapd.c:120: warning: missing initializer
idmapd.c:120: warning: (near initialization for 'nfsd_ic[0].ic_event')
idmapd.c:121: warning: missing initializer
idmapd.c:121: warning: (near initialization for 'nfsd_ic[1].ic_event')
idmapd.c: In function 'flush_nfsd_cache':
idmapd.c:173: warning: comparison between signed and unsigned integer expressions
idmapd.c: In function 'dirscancb':
idmapd.c:384: warning: unused parameter 'fd'
idmapd.c:384: warning: unused parameter 'which'
idmapd.c: In function 'svrreopen':
idmapd.c:468: warning: unused parameter 'fd'
idmapd.c:468: warning: unused parameter 'which'
idmapd.c:468: warning: unused parameter 'data'
idmapd.c: In function 'clntscancb':
idmapd.c:474: warning: unused parameter 'fd'
idmapd.c:474: warning: unused parameter 'which'
idmapd.c: In function 'nfsdcb':
idmapd.c:488: warning: unused parameter 'fd'
idmapd.c: In function 'nfscb':
idmapd.c:663: warning: unused parameter 'fd'
idmapd.c: In function 'validateascii':
idmapd.c:850: warning: comparison between signed and unsigned integer expressions
idmapd.c:858: warning: comparison between signed and unsigned integer expressions
idmapd.c: In function 'getfield':
idmapd.c:916: warning: comparison between signed and unsigned integer expressions
Signed-off-by: Steve Dickson <steved@redhat.com>
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configfile.c:195: warning: 'inline' is not at beginning of declaration
configfile.c:232: warning: 'inline' is not at beginning of declaration
Signed-off-by: Steve Dickson <steved@redhat.com>
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svcgssd_proc.c: In function 'send_response':
svcgssd_proc.c:135: warning: unused parameter 'f'
svcgssd_proc.c: In function 'handle_nullreq':
svcgssd_proc.c:434: warning: comparison of unsigned expression < 0 is always false
Signed-off-by: Steve Dickson <steved@redhat.com>
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network.c: In function 'nfs_verify_family':
network.c:1366: warning: unused parameter 'family'
Signed-off-by: Steve Dickson <steved@redhat.com>
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nfs4mount.c: In function 'fill_ipv4_sockaddr':
nfs4mount.c:149: warning: comparison between signed and unsigned integer expressions
Signed-off-by: Steve Dickson <steved@redhat.com>
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nfsmount.c: In function 'nfsmount':
nfsmount.c:513: warning: missing initializer
nfsmount.c:513: warning: (near initialization for 'mnt_server.saddr')
nfsmount.c:514: warning: missing initializer
nfsmount.c:514: warning: (near initialization for 'nfs_server.saddr')
Signed-off-by: Steve Dickson <steved@redhat.com>
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svcgssd.c: In function 'sig_hup':
svcgssd.c:160: warning: unused parameter 'signal'
Signed-off-by: Steve Dickson <steved@redhat.com>
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gssd_proc.c: In function 'create_auth_rpc_client':
gssd_proc.c:939: warning: comparison between signed and unsigned integer expressions
gssd_proc.c:939: warning: comparison between signed and unsigned integer expressions
gssd_proc.c: In function 'handle_krb5_upcall':
gssd_proc.c:1164: warning: comparison between signed and unsigned integer expressions
gssd_proc.c: In function 'handle_spkm3_upcall':
gssd_proc.c:1178: warning: comparison between signed and unsigned integer expressions
Signed-off-by: Steve Dickson <steved@redhat.com>
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krb5_util.c: In function 'realm_and_service_match':
krb5_util.c:617: warning: unused parameter 'context'
krb5_util.c: In function 'limit_krb5_enctypes':
krb5_util.c:1275: warning: unused parameter 'uid'
Signed-off-by: Steve Dickson <steved@redhat.com>
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gssd_main_loop.c: In function 'dir_notify_handler':
gssd_main_loop.c:64: warning: unused parameter 'sig'
gssd_main_loop.c:64: warning: unused parameter 'si'
gssd_main_loop.c:64: warning: unused parameter 'data'
Signed-off-by: Steve Dickson <steved@redhat.com>
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gssd.c: In function 'sig_hup':
gssd.c:78: warning: unused parameter 'signal'
Signed-off-by: Steve Dickson <steved@redhat.com>
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atomicio.c: In function 'atomicio':
atomicio.c:48: warning: comparison between signed and unsigned integer expressions
Signed-off-by: Steve Dickson <steved@redhat.com>
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nfsstat.c: In function 'print_callstats':
nfsstat.c:797: warning: comparison between signed and unsigned integer
expressions
nfsstat.c:801: warning: comparison between signed and unsigned integer
expressions
nfsstat.c:802: warning: comparison between signed and unsigned integer
expressions
nfsstat.c:805: warning: comparison between signed and unsigned integer
expressions
nfsstat.c: In function 'print_callstats_list':
nfsstat.c:821: warning: comparison between signed and unsigned integer
expressions
nfsstat.c:828: warning: comparison between signed and unsigned integer
expressions
nfsstat.c: In function 'unpause':
nfsstat.c:1111: warning: unused parameter 'sig'
Signed-off-by: Steve Dickson <steved@redhat.com>
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nfssvc.c:184: warning: comparison between signed and unsigned integer expressions
nfssvc.c: In function 'nfssvc_setvers':
nfssvc.c:254: warning: comparison between signed and unsigned integer expressions
nfssvc.c: In function 'nfssvc_threads':
nfssvc.c:280: warning: comparison between signed and unsigned integer expressions
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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conffile.c: In function 'conf_parse_line':
conffile.c:301: warning: comparison between signed and unsigned integer expressions
conffile.c: In function 'conf_load_defaults':
conffile.c:356: warning: unused parameter 'tr'
Signed-off-by: Steve Dickson <steved@redhat.com>
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nfs_mntent.c: In function 'mangle':
nfs_mntent.c:36: warning: comparison between signed and unsigned integer expressions
Signed-off-by: Steve Dickson <steved@redhat.com>
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cacheio.c: In function 'cache_flush':
cacheio.c:352: warning: comparison between signed and unsigned integer expressions
Signed-off-by: Steve Dickson <steved@redhat.com>
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svc_socket.c: In function 'svcudp_socket':
svc_socket.c:160: warning: unused parameter 'reuse'
Signed-off-by: Steve Dickson <steved@redhat.com>
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rpcdispatch.c: In function 'rpc_dispatch':
rpcdispatch.c:30: warning: comparison between signed and unsigned
integer expressions
rpcdispatch.c:35: warning: comparison between signed and unsigned
integer expressions
Signed-off-by: Steve Dickson <steved@redhat.com>
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Added -Wextra to the CFLAGS which enables more checking
during compilation, which in turn, will hopefully flag
potential problems before they occur.
Signed-off-by: Steve Dickson <steved@redhat.com>
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When not using machine credentials for root, if the machine
credential cache file is newer than the root credential file
the wrong file will get picked. Ignore the machine file in
this case.
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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Commit 4c5ff6d4 removed the setting of endtime for a few contexts by
accident.
Now to figure out why I get stale handles on submounts.
Signed-off-by: Steve Dickson <steved@redhat.com>
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