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* rpc: fix undefined behaviour in __builtin_ctzDmitry Antipov2020-06-171-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | Found with GCC UBsan: rpcsvc.c:102:36: runtime error: passing zero to ctz(), which is not a valid argument #0 0x7fcd1ff6faa4 in rpcsvc_get_free_queue_index /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:102 #1 0x7fcd1ff81e12 in rpcsvc_handle_rpc_call /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:837 #2 0x7fcd1ff833ad in rpcsvc_notify /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:1000 #3 0x7fcd1ff8829d in rpc_transport_notify /path/to/glusterfs/rpc/rpc-lib/src/rpc-transport.c:520 #4 0x7fcd0dd72f16 in socket_event_poll_in_async /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2502 #5 0x7fcd0dd8986a in gf_async ../../../../libglusterfs/src/glusterfs/async.h:189 #6 0x7fcd0dd8986a in socket_event_poll_in /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2543 #7 0x7fcd0dd8986a in socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2934 #8 0x7fcd0dd8986a in socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2854 #9 0x7fcd2048aff7 in event_dispatch_epoll_handler /path/to/glusterfs/libglusterfs/src/event-epoll.c:640 #10 0x7fcd2048aff7 in event_dispatch_epoll_worker /path/to/glusterfs/libglusterfs/src/event-epoll.c:751 ... Fix, simplify, and prefer 'unsigned long' as underlying bitmap type. Change-Id: If3f24dfe7bef8bc7a11a679366e219a73caeb9e4 Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru> Fixes: #1283
* event: rename event_XXX with gf_ prefixedXiubo Li2019-07-291-12/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I hit one crash issue when using the libgfapi. In the libgfapi it will call glfs_poller() --> event_dispatch() in file api/src/glfs.c:721, and the event_dispatch() is defined by libgluster locally, the problem is the name of event_dispatch() is the extremly the same with the one from libevent package form the OS. For example, if a executable program Foo, which will also use and link the libevent and the libgfapi at the same time, I can hit the crash, like: kernel: glfs_glfspoll[68486]: segfault at 1c0 ip 00007fef006fd2b8 sp 00007feeeaffce30 error 4 in libevent-2.0.so.5.1.9[7fef006ed000+46000] The link for Foo is: lib_foo_LADD = -levent $(GFAPI_LIBS) It will crash. This is because the glfs_poller() is calling the event_dispatch() from the libevent, not the libglsuter. The gfapi link info : GFAPI_LIBS = -lacl -lgfapi -lglusterfs -lgfrpc -lgfxdr -luuid If I link Foo like: lib_foo_LADD = $(GFAPI_LIBS) -levent It will works well without any problem. And if Foo call one private lib, such as handler_glfs.so, and the handler_glfs.so will link the GFAPI_LIBS directly, while the Foo won't and it will dlopen(handler_glfs.so), then the crash will be hit everytime. The link info will be: foo_LADD = -levent libhandler_glfs_LIBADD = $(GFAPI_LIBS) I can avoid the crash temporarily by linking the GFAPI_LIBS in Foo too like: foo_LADD = $(GFAPI_LIBS) -levent libhandler_glfs_LIBADD = $(GFAPI_LIBS) But this is ugly since the Foo won't use any APIs from the GFAPI_LIBS. And in some cases when the --as-needed link option is added(on many dists it is added as default), then the crash is back again, the above workaround won't work. Fixes: #699 Change-Id: I38f0200b941bd1cff4bf3066fca2fc1f9a5263aa Signed-off-by: Xiubo Li <xiubli@redhat.com>
* socket: socket event handlers now return voidMilind Changire2019-02-181-3/+3
| | | | | | | | | | | | | | Problem: Returning any value from socket event handlers to the event sub-system doesn't make sense since event sub-system cannot handle socket sub-system errors. Solution: Change return type of all socket event handlers to 'void' Change-Id: I70dc2c57f12b7ea2fae41120f71aa0d7fe0b2b6f Fixes: bz#1651246 Signed-off-by: Milind Changire <mchangir@redhat.com>
* libglusterfs: Move devel headers under glusterfs directoryShyamsundarR2018-12-051-0/+135
libglusterfs devel package headers are referenced in code using include semantics for a program, this while it works can be better especially when dealing with out of tree xlator builds or in general out of tree devel package usage. Towards this, the following changes are done, - moved all devel headers under a glusterfs directory - Included these headers using system header notation <> in all code outside of libglusterfs - Included these headers using own program notation "" within libglusterfs This change although big, is just moving around the headers and making it correct when including these headers from other sources. This helps us correctly include libglusterfs includes without namespace conflicts. Change-Id: Id2a98854e671a7ee5d73be44da5ba1a74252423b Updates: bz#1193929 Signed-off-by: ShyamsundarR <srangana@redhat.com>