path: root/net/9p/trans_fd.c
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2010-09-06net/9p/trans_fd.c: Fix unsigned return typeJulia Lawall
The function has an unsigned return type, but returns a negative constant to indicate an error condition. The result of calling the function is always stored in a variable of type (signed) int, and thus unsigned can be dropped from the return type. A sematic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @exists@ identifier f; constant C; @@ unsigned f(...) { <+... * return -C; ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-029p: strlen() doesn't count the terminatorDan Carpenter
This is an off by one bug because strlen() doesn't count the NULL terminator. We strcpy() addr into a fixed length array of size UNIX_PATH_MAX later on. The addr variable is the name of the device being mounted. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-02-089p: fix option parsingEric Van Hensbergen
Options pointer is being moved before calling kfree() which seems to cause problems. This uses a separate pointer to track and free original allocation. Signed-off-by: Venkateswararao Jujjuri <jvrao@us.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>w
2009-12-169p connect fixesAl Viro
* if we fail in p9_conn_create(), we shouldn't leak references to struct file. Logics in ->close() doesn't help - ->trans is already gone by the time it's called. * sock_create_kern() can fail. * use of sock_map_fd() is all fscked up; I'd fixed most of that, but the rest will have to wait for a bit more work in net/socket.c (we still are violating the basic rule of working with descriptor table: "once the reference is installed there, don't rely on finding it there again"). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-11-29net: Move && and || to end of previous lineJoe Perches
Not including net/atm/ Compiled tested x86 allyesconfig only Added a > 80 column line or two, which I ignored. Existing checkpatch plaints willfully, cheerfully ignored. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-179p: minor comment fixesAbhishek Kulkarni
Fix the comments -- mostly the improper and/or missing descriptions of function parameters. Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2009-07-02net/9p: Fix crash due to bad mount parameters.Abhishek Kulkarni
It is not safe to use match_int without checking the token type returned by match_token (especially when the token type returned is Opt_err and args is empty). Fix it. Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-05net/9p: handle correctly interrupted 9P requestsLatchesar Ionkov
Currently the 9p code crashes when a operation is interrupted, i.e. for example when the user presses ^C while reading from a file. This patch fixes the code that is responsible for interruption and flushing of 9P operations. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
2009-02-269p: fix sparse warning: cast adds address spaceHannes Eder
Impact: Trust in the comment and add '__force' to the cast. Fix this sparse warning: net/9p/trans_fd.c:420:34: warning: cast adds address space to expression (<asn:1>) Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-229p: fix debug build errorEric Van Hensbergen
Fixes build problem with 9p when building with debug disabled. Also contains some fixes for warnings which pop up when CONFIG_NET_9P_DEBUG is disabled. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: add more conservative lockingEric Van Hensbergen
During the reorganization some of the multi-theaded locking assumptions were accidently relaxed. This patch moves us back towards a more conservative locking strategy. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: rework client code to use new protocol support functionsEric Van Hensbergen
Now that the new protocol functions are in place, this patch switches the client code to using the new support code. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: remove unnecessary tag field from p9_req_t structureEric Van Hensbergen
This removes the vestigial tag field from the p9_req_t structure. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: remove 9p fcall debug printsEric Van Hensbergen
One of the current debug options allows users to get a verbose dump of fcalls. This isn't really necessary as correctly parsed protocol frames can be printed as part of the code in the client functions. The consolidated printfcalls structure would require new entries to be added for every extension. This patch removes the debug print methods and their use. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: drop broken unused error path from p9_conn_create()Tejun Heo
Post p9_fd_poll() error path which checks m->poll_waddr[i] for PTR_ERR value has the following problems. * It's completely unused. Error value is set iff NULL @wait_address has been specified to p9_pollwait() which is guaranteed not to happen. * It dereferences @m after deallocating it (introduced by 571ffeaf and spotted by Raja R Harinath. * It returned the wrong value on error. It should return poll_waddr[i] but it returnes poll_waddr (introduced by 571ffeaf). * p9_mux_poll_stop() doesn't handle PTR_ERR value. It will try to operate on the PTR_ERR value as if it's a normal pointer and cause oops. As the error path is bogus in the first place, there's no reason to hold onto it. Kill it. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Cc: Raja R Harinath <harinath@hurrynot.org>
2008-10-179p: make rpc code common and rework flush codeEric Van Hensbergen
This code moves the rpc function to the common client base, reorganizes the flush code to be more simple and stable, and makes the necessary adjustments to the underlying transports to adapt to the new structure. This reduces the overall amount of code duplication between the transports and should make adding new transports more straightforward. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: use the rcall structure passed in the request in trans_fd read_workEric Van Hensbergen
This patch reworks the read_work function to enable it to directly use a passed in rcall structure. This should help allow us to remove unnecessary copies in the future. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: apply common request code to trans_fdEric Van Hensbergen
Apply the now common p9_req_t structure to the fd transport. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: apply common tagpool handling to trans_fdEric Van Hensbergen
Simplify trans_fd by using new common client tagpool structure. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: eliminate callback complexityEric Van Hensbergen
The current trans_fd rpc mechanisms use a dynamic callback mechanism which introduces a lot of complexity which only accomodates a single special case. This patch removes much of that complexity in favor of a simple exception mechanism to deal with flushes. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: consolidate mux_rpc and request structureEric Van Hensbergen
Currently, trans_fd has two structures (p9_req and p9_mux-rpc) which contain mostly duplicate data. This patch consolidates these two structures and removes p9_mux_rpc. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: remove unnecessary prototypesEric Van Hensbergen
Cleanup files by reordering functions in order to remove need for unnecessary function prototypes. There are no code changes here, just functions being moved around and prototypes being eliminated. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: remove duplicate client stateEric Van Hensbergen
Now that we are passing client state into the transport modules, remove duplicate state which is present in transport private structures. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p: consolidate transport structureEric Van Hensbergen
Right now there is a transport module structure which provides per-transport type functions and data and a transport structure which contains per-instance public data as well as function pointers to instance specific functions. This patch moves public transport visible instance data to the client structure (which in some cases had duplicate data) and consolidates the functions into the transport module structure. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-179p-trans_fd: use single pollerTejun Heo
trans_fd used pool of upto 100 pollers to monitor the r/w fds. The approach makes sense in userspace back when the only available interfaces were poll(2) and select(2). As each event monitor - trigger - handling iteration took O(n) where `n' is the number of watched fds, it makes sense to spread them to many pollers such that the `n' can be divided by the number of pollers. However, this doesn't make any sense in kernel because persistent edge triggered event monitoring is how the whole thing is implemented in the kernel in the first place. This patch converts trans_fd to use single poller which watches all the fds instead of the poll of pollers approach. All the fds are registered for monitoring on creation and only the fds with pending events are scanned when something happens much like how epoll is implemented. This change makes trans_fd fd monitoring more efficient and simpler. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-10-13vfs: Use const for kernel parser tableSteven Whitehouse
This is a much better version of a previous patch to make the parser tables constant. Rather than changing the typedef, we put the "const" in all the various places where its required, allowing the __initconst exception for nfsroot which was the cause of the previous trouble. This was posted for review some time ago and I believe its been in -mm since then. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Alexander Viro <aviro@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-09-249p: introduce missing kfreeJulia Lawall
Error handling code following a kmalloc should free the allocated data. The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,l; position p1,p2; expression *ptr != NULL; @@ ( if ((x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...)) == NULL) S | x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S ) <... when != x when != if (...) { <+...x...+> } x->f = E ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2008-09-249p-trans_fd: fix and clean up module init/exit pathsTejun Heo
trans_fd leaked p9_mux_wq on module unload. Fix it. While at it, collapse p9_mux_global_init() into p9_trans_fd_init(). It's easier to follow this way and the global poll_tasks array is about to removed anyway. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-09-249p-trans_fd: don't do fs segment mangling in p9_fd_poll()Tejun Heo
p9_fd_poll() is never called with user pointers and f_op->poll() doesn't expect its arguments to be from userland. There's no need to set kernel ds before calling f_op->poll() from p9_fd_poll(). Remove it. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-09-249p-trans_fd: clean up p9_conn_create()Tejun Heo
* Use kzalloc() to allocate p9_conn and remove 0/NULL initializations. * Clean up error return paths. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-09-249p-trans_fd: fix trans_fd::p9_conn_destroy()Tejun Heo
p9_conn_destroy() first kills all current requests by calling p9_conn_cancel(), then waits for the request list to be cleared by waiting on p9_conn->equeue. After that, polling is stopped and the trans is destroyed. This sequence has a few problems. * Read and write works were never cancelled and the p9_conn can be destroyed while the works are running as r/w works remove requests from the list and dereference the p9_conn from them. * The list emptiness wait using p9_conn->equeue wouldn't trigger because p9_conn_cancel() always clears all the lists and the only way the wait can be triggered is to have another task to issue a request between the slim window between p9_conn_cancel() and the wait, which isn't safe under the current implementation with or without the wait. This patch fixes the problem by first stopping poll, which can schedule r/w works, first and cancle r/w works which guarantees that r/w works are not and will not run from that point and then calling p9_conn_cancel() and do the rest of destruction. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-09-249p: implement proper trans module refcounting and unregistrationTejun Heo
9p trans modules aren't refcounted nor were they unregistered properly. Fix it. * Add 9p_trans_module->owner and reference the module on each trans instance creation and put it on destruction. * Protect v9fs_trans_list with a spinlock. This isn't strictly necessary as the list is manipulated only during module loading / unloading but it's a good idea to make the API safe. * Unregister trans modules when the corresponding module is being unloaded. * While at it, kill unnecessary EXPORT_SYMBOL on p9_trans_fd_init(). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-07-24flag parameters: socket and socketpairUlrich Drepper
This patch adds support for flag values which are ORed to the type passwd to socket and socketpair. The additional code is minimal. The flag values in this implementation can and must match the O_* flags. This avoids overhead in the conversion. The internal functions sock_alloc_fd and sock_map_fd get a new parameters and all callers are changed. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include <fcntl.h> #include <stdio.h> #include <unistd.h> #include <netinet/in.h> #include <sys/socket.h> #define PORT 57392 /* For Linux these must be the same. */ #define SOCK_CLOEXEC O_CLOEXEC int main (void) { int fd; fd = socket (PF_INET, SOCK_STREAM, 0); if (fd == -1) { puts ("socket(0) failed"); return 1; } int coe = fcntl (fd, F_GETFD); if (coe == -1) { puts ("fcntl failed"); return 1; } if (coe & FD_CLOEXEC) { puts ("socket(0) set close-on-exec flag"); return 1; } close (fd); fd = socket (PF_INET, SOCK_STREAM|SOCK_CLOEXEC, 0); if (fd == -1) { puts ("socket(SOCK_CLOEXEC) failed"); return 1; } coe = fcntl (fd, F_GETFD); if (coe == -1) { puts ("fcntl failed"); return 1; } if ((coe & FD_CLOEXEC) == 0) { puts ("socket(SOCK_CLOEXEC) does not set close-on-exec flag"); return 1; } close (fd); int fds[2]; if (socketpair (PF_UNIX, SOCK_STREAM, 0, fds) == -1) { puts ("socketpair(0) failed"); return 1; } for (int i = 0; i < 2; ++i) { coe = fcntl (fds[i], F_GETFD); if (coe == -1) { puts ("fcntl failed"); return 1; } if (coe & FD_CLOEXEC) { printf ("socketpair(0) set close-on-exec flag for fds[%d]\n", i); return 1; } close (fds[i]); } if (socketpair (PF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0, fds) == -1) { puts ("socketpair(SOCK_CLOEXEC) failed"); return 1; } for (int i = 0; i < 2; ++i) { coe = fcntl (fds[i], F_GETFD); if (coe == -1) { puts ("fcntl failed"); return 1; } if ((coe & FD_CLOEXEC) == 0) { printf ("socketpair(SOCK_CLOEXEC) does not set close-on-exec flag for fds[%d]\n", i); return 1; } close (fds[i]); } puts ("OK"); return 0; } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Ulrich Drepper <drepper@redhat.com> Acked-by: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-149p: fix error path during early mountEric Van Hensbergen
There was some cleanup issues during early mount which would trigger a kernel bug for certain types of failure. This patch reorganizes the cleanup to get rid of the bad behavior. This also merges the 9pnet and 9pnet_fd modules for the purpose of configuration and initialization. Keeping the fd transport separate from the core 9pnet code seemed like a good idea at the time, but in practice has caused more harm and confusion than good. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-05-149p: propagate parse_option changes to client and transportsEric Van Hensbergen
Propagate changes that were made to the parse_options code to the other parse options pieces present in the other modules. Looks like the client parse options was probably corrupting the parse string and causing problems for others. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-05-149p: Documentation updatesEric Van Hensbergen
The kernel-doc comments of much of the 9p system have been in disarray since reorganization. This patch fixes those problems, adds additional documentation and a template book which collects the 9p information. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2008-03-28net/9p/trans_fd.c:p9_trans_fd_init(): module_init functions should return 0 ↵Andrew Morton
on success Mar 23 09:06:31 opensuse103 kernel: Installing 9P2000 support Mar 23 09:06:31 opensuse103 kernel: sys_init_module: '9pnet_fd'->init suspiciously returned 1, it should follow 0/-E convention Mar 23 09:06:31 opensuse103 kernel: sys_init_module: loading module anyway... Mar 23 09:06:31 opensuse103 kernel: Pid: 5323, comm: modprobe Not tainted 2.6.25-rc6-git7-default #1 Mar 23 09:06:31 opensuse103 kernel: [<c013c253>] sys_init_module+0x172b/0x17c9 Mar 23 09:06:31 opensuse103 kernel: [<c0108a6a>] sys_mmap2+0x62/0x77 Mar 23 09:06:31 opensuse103 kernel: [<c01059c4>] sysenter_past_esp+0x6d/0xa9 Mar 23 09:06:31 opensuse103 kernel: ======================= Cc: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@opteron.(none)> Cc: David S. Miller <davem@davemloft.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: <devzero@web.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-22[9P] net/9p/trans_fd.c: remove unused variableJulia Lawall
The variable cb is initialized but never used otherwise. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ type T; identifier i; constant C; @@ ( extern T i; | - T i; <+... when != i - i = C; ...+> ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-069p: transport API reorganizationEric Van Hensbergen
This merges the mux.c (including the connection interface) with trans_fd in preparation for transport API changes. Ultimately, trans_fd will need to be rewritten to clean it up and simplify the implementation, but this reorganization is viewed as the first step. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2007-11-069p: add missing end-of-options record for trans_fdLatchesar Ionkov
The list of options that the fd transport accepts is missing end-of-options marker. This patch adds it. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Acked-by: Eric Van Hensbergen <ericvh@gmail.com>
2007-10-179p: Make transports dynamicEric Van Hensbergen
This patch abstracts out the interfaces to underlying transports so that new transports can be added as modules. This should also allow kernel configuration of transports without ifdef-hell. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2007-07-149p: Reorganization of 9p file system codeLatchesar Ionkov
This patchset moves non-filesystem interfaces of v9fs from fs/9p to net/9p. It moves the transport, packet marshalling and connection layers to net/9p leaving only the VFS related files in fs/9p. This work is being done in preparation for in-kernel 9p servers as well as alternate 9p clients (other than VFS). Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>