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* Patch for unexpectedly aligned messagesMarc de Kruijf2009-09-021-1/+1
| | | | | | | | | | | | I found the following bug, where nlmsg_ok() in lib/msg.c would incorrectly return 'true' when the input argument 'remaining' was a negative number. This happens when the message is not aligned the way that libnl expects (although it is still legal). In the comparison of the signed and unsigned numbers on line 284, the signed number gets converted to an unsigned number, which is unexpected and naturally produces a bug. My patch is below. The cast is ugly, but it fixes the problem.
* restructure module documentation orderThomas Graf2008-12-101-1/+1
| | | | split hiearchy into one top level module per library
* Replace NL_KEEP code with proper message reference countingThomas Graf2008-10-141-10/+30
| | | | | | Adds reference counting to netlink messages so callbacks can hold on to a message without using the broken keep message flag.
* Thread-safe error handlingThomas Graf2008-05-141-12/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order for the interface to become more thread safe, the error handling was revised to no longer depend on a static errno and error string buffer. This patch converts all error paths to return a libnl specific error code which can be translated to a error message using nl_geterror(int error). The functions nl_error() and nl_get_errno() are therefore obsolete. This change required various sets of function prototypes to be changed in order to return an error code, the most prominent are: struct nl_cache *foo_alloc_cache(...); changed to: int foo_alloc_cache(..., struct nl_cache **); struct nl_msg *foo_build_request(...); changed to: int foo_build_request(..., struct nl_msg **); struct foo *foo_parse(...); changed to: int foo_parse(..., struct foo **); This pretty much only leaves trivial allocation functions to still return a pointer object which can still return NULL to signal out of memory. This change is a serious API and ABI breaker, sorry!
* Improve performance by using malloc() over calloc() in critical placesThomas Graf2008-05-071-1/+3
| | | | | | | As pointed out by Regis Hanna, a considerable performance gain can be achieved by using malloc() over calloc() when allocating netlink message buffers. This is likely due to the fact that we use a complete page for each message.
* Improve message/attribute construction documentation and add nlmsg_expand()Thomas Graf2008-01-141-14/+51
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* Fix stale data pointers when constructing messagesThomas Graf2008-01-141-23/+45
| | | | | | | | | | | | | | | | Patrick McHardy reported a problem where pointers to the payload of a netlink message as returned by f.e. the nesting helpers become stale when the payload data chunk is reallocated. In order to avoid further problems, the payload chunk is no longer extended on the fly. Instead the allocation is made during netlink message object allocation time with a default size of a page which should be fine for the majority of all users. Additionally the functions nlmsg_alloc_size() and nlmsg_set_default_size() have been added to allocate messages of a particular length and to modify the default message size.
* Added additional parsing and validation functions for generic netlinkThomas Graf2008-01-101-2/+10
| | | | Also adds better example documentation for generic netlink
* Fix nl_msg_parse() to not give back a reference it does not ownThomas Graf2007-12-171-1/+0
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* [LIBNL]: Fix format stringsPatrick McHardy2007-12-131-3/+3
| | | | | | Use %td for ptrdiff_t and %zu for size_t. Signed-off-by: Patrick McHardy <kaber@trash.net>
* Cache message type association interface cleanupsThomas Graf2007-10-111-9/+15
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* Initial importThomas Graf2007-09-141-0/+931
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