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| author | Thomas Graf <tgr@lsx.localdomain> | 2008-05-14 15:49:44 (GMT) |
|---|---|---|
| committer | Thomas Graf <tgr@lsx.localdomain> | 2008-05-14 15:49:44 (GMT) |
| commit | 8a3efffa5b3fde252675239914118664d36a2c24 (patch) | |
| tree | f8efc71b2bd4736f2a56084efea05d7ee191a422 /include/netlink/genl/ctrl.h | |
| parent | 85f932552e61c5997c1e83fe386098c94d93c273 (diff) | |
| download | libnl-8a3efffa5b3fde252675239914118664d36a2c24.zip libnl-8a3efffa5b3fde252675239914118664d36a2c24.tar.gz libnl-8a3efffa5b3fde252675239914118664d36a2c24.tar.bz2 | |
Thread-safe error handling
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!
Diffstat (limited to 'include/netlink/genl/ctrl.h')
| -rw-r--r-- | include/netlink/genl/ctrl.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/netlink/genl/ctrl.h b/include/netlink/genl/ctrl.h index 5d65c68..f66338e 100644 --- a/include/netlink/genl/ctrl.h +++ b/include/netlink/genl/ctrl.h @@ -6,7 +6,7 @@ * License as published by the Free Software Foundation version 2.1 * of the License. * - * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch> + * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch> */ #ifndef NETLINK_GENL_CTRL_H_ @@ -22,7 +22,8 @@ extern "C" { struct genl_family; -extern struct nl_cache * genl_ctrl_alloc_cache(struct nl_handle *); +extern int genl_ctrl_alloc_cache(struct nl_handle *, + struct nl_cache **); extern struct genl_family * genl_ctrl_search(struct nl_cache *, int); extern struct genl_family * genl_ctrl_search_by_name(struct nl_cache *, const char *); |