404 lines
13 KiB
Diff
404 lines
13 KiB
Diff
From c1948ec29b8dcdc58d2d92700c325abdeab111a6 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <adraszik@tycoint.com>
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Date: Thu, 25 Aug 2016 13:15:00 +0100
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Subject: [PATCH 2/3] lib: switch to using strerror_l() instead of strerror_r()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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glibc provides two versions of strerror_r(), which
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can be chosen between using feature test macros
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_GNU_SOURCE and _POSIX_C_SOURCE. libnl is built using
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the former, hence we get the glibc special version,
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and all code so far has been written for this.
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Other C libraries like musl on the other hand only try
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to be posix compliant, and only ever provide the posix
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version of strerror_r(), which has a different signature.
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Uses in libnl hence generally cause printf() of an *int*
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with a *string format* specifier for that reason.
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Additionally, strerror_r() has been deprecated:
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http://austingroupbugs.net/view.php?id=655
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Switch to using strerror_l() (via our wrapper just
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introduced).
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Signed-off-by: André Draszik <adraszik@tycoint.com>
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Reviewed-by: Stephane Ayotte <sayotte@tycoint.com>
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Signed-off-by: Thomas Haller <thaller@redhat.com>
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---
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Upstream-Status: Backport https://github.com/thom311/libnl/commit/c1948ec29b8dcdc58d2d92700c325abdeab111a6
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lib/cache_mngr.c | 5 ++---
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lib/fib_lookup/lookup.c | 3 ++-
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lib/handlers.c | 4 ++--
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lib/msg.c | 4 ++--
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lib/nl.c | 26 +++++++++-----------------
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lib/route/route_obj.c | 3 ++-
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lib/socket.c | 33 +++++++++++----------------------
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7 files changed, 30 insertions(+), 48 deletions(-)
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diff --git a/lib/cache_mngr.c b/lib/cache_mngr.c
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index b9eb345..1f23eb1 100644
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--- a/lib/cache_mngr.c
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+++ b/lib/cache_mngr.c
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@@ -33,6 +33,7 @@
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*/
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#include <netlink-private/netlink.h>
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+#include <netlink-private/utils.h>
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#include <netlink/netlink.h>
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#include <netlink/cache.h>
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#include <netlink/utils.h>
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@@ -392,10 +393,8 @@ int nl_cache_mngr_poll(struct nl_cache_mngr *mngr, int timeout)
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ret = poll(&fds, 1, timeout);
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NL_DBG(3, "Cache manager %p, poll() returned %d\n", mngr, ret);
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if (ret < 0) {
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- char buf[64];
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-
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NL_DBG(4, "nl_cache_mngr_poll(%p): poll() failed with %d (%s)\n",
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- mngr, errno, strerror_r(errno, buf, sizeof(buf)));
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+ mngr, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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diff --git a/lib/fib_lookup/lookup.c b/lib/fib_lookup/lookup.c
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index 43b6126..efc862b 100644
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--- a/lib/fib_lookup/lookup.c
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+++ b/lib/fib_lookup/lookup.c
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@@ -17,6 +17,7 @@
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*/
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#include <netlink-private/netlink.h>
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+#include <netlink-private/utils.h>
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#include <netlink/netlink.h>
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#include <netlink/attr.h>
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#include <netlink/utils.h>
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@@ -133,7 +134,7 @@ static void result_dump_line(struct nl_object *obj, struct nl_dump_params *p)
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nl_rtntype2str(res->fr_type, buf, sizeof(buf)));
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nl_dump(p, "scope %s error %s (%d)\n",
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rtnl_scope2str(res->fr_scope, buf, sizeof(buf)),
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- strerror_r(-res->fr_error, buf, sizeof(buf)), res->fr_error);
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+ nl_strerror_l(-res->fr_error), res->fr_error);
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}
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static void result_dump_details(struct nl_object *obj, struct nl_dump_params *p)
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diff --git a/lib/handlers.c b/lib/handlers.c
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index 97a0d9c..4a48b99 100644
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--- a/lib/handlers.c
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+++ b/lib/handlers.c
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@@ -26,6 +26,7 @@
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*/
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#include <netlink-private/netlink.h>
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+#include <netlink-private/utils.h>
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#include <netlink/netlink.h>
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#include <netlink/utils.h>
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#include <netlink/msg.h>
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@@ -79,10 +80,9 @@ static int nl_error_handler_verbose(struct sockaddr_nl *who,
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struct nlmsgerr *e, void *arg)
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{
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FILE *ofd = arg ? arg : stderr;
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- char buf[256];
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fprintf(ofd, "-- Error received: %s\n-- Original message: ",
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- strerror_r(-e->error, buf, sizeof(buf)));
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+ nl_strerror_l(-e->error));
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print_header_content(ofd, &e->msg);
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fprintf(ofd, "\n");
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diff --git a/lib/msg.c b/lib/msg.c
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index e8a7e99..9af3f3a 100644
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--- a/lib/msg.c
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+++ b/lib/msg.c
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@@ -27,6 +27,7 @@
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*/
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#include <netlink-private/netlink.h>
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+#include <netlink-private/utils.h>
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#include <netlink/netlink.h>
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#include <netlink/utils.h>
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#include <netlink/cache.h>
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@@ -913,11 +914,10 @@ static void dump_error_msg(struct nl_msg *msg, FILE *ofd)
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fprintf(ofd, " [ERRORMSG] %zu octets\n", sizeof(*err));
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if (nlmsg_len(hdr) >= sizeof(*err)) {
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- char buf[256];
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struct nl_msg *errmsg;
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fprintf(ofd, " .error = %d \"%s\"\n", err->error,
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- strerror_r(-err->error, buf, sizeof(buf)));
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+ nl_strerror_l(-err->error));
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fprintf(ofd, " [ORIGINAL MESSAGE] %zu octets\n", sizeof(*hdr));
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errmsg = nlmsg_inherit(&err->msg);
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diff --git a/lib/nl.c b/lib/nl.c
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index 123f657..a45c3ea 100644
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--- a/lib/nl.c
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+++ b/lib/nl.c
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@@ -27,6 +27,7 @@
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#include <netlink-private/netlink.h>
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#include <netlink-private/socket.h>
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+#include <netlink-private/utils.h>
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#include <netlink/netlink.h>
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#include <netlink/utils.h>
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#include <netlink/handlers.h>
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@@ -105,7 +106,6 @@ int nl_connect(struct nl_sock *sk, int protocol)
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int errsv;
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socklen_t addrlen;
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struct sockaddr_nl local = { 0 };
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- char buf[64];
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int try_bind = 1;
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#ifdef SOCK_CLOEXEC
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@@ -119,7 +119,7 @@ int nl_connect(struct nl_sock *sk, int protocol)
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if (sk->s_fd < 0) {
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errsv = errno;
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NL_DBG(4, "nl_connect(%p): socket() failed with %d (%s)\n", sk, errsv,
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- strerror_r(errsv, buf, sizeof(buf)));
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+ nl_strerror_l(errsv));
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err = -nl_syserr2nlerr(errsv);
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goto errout;
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}
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@@ -158,7 +158,7 @@ int nl_connect(struct nl_sock *sk, int protocol)
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_nl_socket_used_ports_set(used_ports, port);
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} else {
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NL_DBG(4, "nl_connect(%p): bind() for port %u failed with %d (%s)\n",
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- sk, (unsigned) port, errsv, strerror_r(errsv, buf, sizeof(buf)));
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+ sk, (unsigned) port, errsv, nl_strerror_l(errsv));
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_nl_socket_used_ports_release_all(used_ports);
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err = -nl_syserr2nlerr(errsv);
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goto errout;
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@@ -172,7 +172,7 @@ int nl_connect(struct nl_sock *sk, int protocol)
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if (err != 0) {
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errsv = errno;
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NL_DBG(4, "nl_connect(%p): bind() failed with %d (%s)\n",
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- sk, errsv, strerror_r(errsv, buf, sizeof(buf)));
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+ sk, errsv, nl_strerror_l(errsv));
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err = -nl_syserr2nlerr(errsv);
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goto errout;
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}
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@@ -183,7 +183,7 @@ int nl_connect(struct nl_sock *sk, int protocol)
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&addrlen);
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if (err < 0) {
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NL_DBG(4, "nl_connect(%p): getsockname() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, errno, nl_strerror_l(errno));
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err = -nl_syserr2nlerr(errno);
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goto errout;
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}
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@@ -280,10 +280,8 @@ int nl_sendto(struct nl_sock *sk, void *buf, size_t size)
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ret = sendto(sk->s_fd, buf, size, 0, (struct sockaddr *)
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&sk->s_peer, sizeof(sk->s_peer));
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if (ret < 0) {
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- char errbuf[64];
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-
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NL_DBG(4, "nl_sendto(%p): sendto() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, errbuf, sizeof(errbuf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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@@ -343,10 +341,8 @@ int nl_sendmsg(struct nl_sock *sk, struct nl_msg *msg, struct msghdr *hdr)
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ret = sendmsg(sk->s_fd, hdr, 0);
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if (ret < 0) {
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- char errbuf[64];
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-
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NL_DBG(4, "nl_sendmsg(%p): sendmsg() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, errbuf, sizeof(errbuf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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@@ -706,15 +702,13 @@ retry:
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goto abort;
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}
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if (n < 0) {
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- char errbuf[64];
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-
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if (errno == EINTR) {
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NL_DBG(3, "recvmsg() returned EINTR, retrying\n");
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goto retry;
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}
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NL_DBG(4, "nl_sendmsg(%p): nl_recv() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, errbuf, sizeof(errbuf)));
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+ sk, errno, nl_strerror_l(errno));
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retval = -nl_syserr2nlerr(errno);
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goto abort;
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}
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@@ -980,10 +974,8 @@ continue_reading:
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goto out;
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}
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} else if (e->error) {
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- char buf[64];
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-
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NL_DBG(4, "recvmsgs(%p): RTNETLINK responded with %d (%s)\n",
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- sk, -e->error, strerror_r(-e->error, buf, sizeof(buf)));
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+ sk, -e->error, nl_strerror_l(-e->error));
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/* Error message reported back from kernel. */
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if (cb->cb_err) {
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diff --git a/lib/route/route_obj.c b/lib/route/route_obj.c
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index 7347ed2..21b67b1 100644
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--- a/lib/route/route_obj.c
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+++ b/lib/route/route_obj.c
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@@ -31,6 +31,7 @@
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*/
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#include <netlink-private/netlink.h>
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+#include <netlink-private/utils.h>
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#include <netlink/netlink.h>
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#include <netlink/cache.h>
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#include <netlink/utils.h>
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@@ -259,7 +260,7 @@ static void route_dump_details(struct nl_object *a, struct nl_dump_params *p)
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if ((r->ce_mask & ROUTE_ATTR_CACHEINFO) && r->rt_cacheinfo.rtci_error) {
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nl_dump_line(p, " cacheinfo error %d (%s)\n",
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r->rt_cacheinfo.rtci_error,
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- strerror_r(-r->rt_cacheinfo.rtci_error, buf, sizeof(buf)));
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+ nl_strerror_l(-r->rt_cacheinfo.rtci_error));
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}
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if (r->ce_mask & ROUTE_ATTR_METRICS) {
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diff --git a/lib/socket.c b/lib/socket.c
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index 97b2f69..55153b4 100644
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--- a/lib/socket.c
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+++ b/lib/socket.c
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@@ -33,6 +33,7 @@
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#include <netlink-private/netlink.h>
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#include <netlink-private/socket.h>
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+#include <netlink-private/utils.h>
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#include <netlink/netlink.h>
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#include <netlink/utils.h>
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#include <netlink/handlers.h>
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@@ -449,11 +450,9 @@ int nl_socket_add_memberships(struct nl_sock *sk, int group, ...)
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err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP,
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&group, sizeof(group));
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if (err < 0) {
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- char buf[64];
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-
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va_end(ap);
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NL_DBG(4, "nl_socket_add_memberships(%p): setsockopt() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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@@ -501,11 +500,9 @@ int nl_socket_drop_memberships(struct nl_sock *sk, int group, ...)
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err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_DROP_MEMBERSHIP,
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&group, sizeof(group));
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if (err < 0) {
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- char buf[64];
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-
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va_end(ap);
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NL_DBG(4, "nl_socket_drop_memberships(%p): setsockopt() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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@@ -619,7 +616,6 @@ int nl_socket_set_fd(struct nl_sock *sk, int protocol, int fd)
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{
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int err = 0;
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socklen_t addrlen;
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- char buf[64];
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struct sockaddr_nl local = { 0 };
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int so_type = -1, so_protocol = -1;
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@@ -633,7 +629,7 @@ int nl_socket_set_fd(struct nl_sock *sk, int protocol, int fd)
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&addrlen);
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if (err < 0) {
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NL_DBG(4, "nl_socket_set_fd(%p,%d): getsockname() failed with %d (%s)\n",
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- sk, fd, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, fd, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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if (addrlen != sizeof(local))
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@@ -648,7 +644,7 @@ int nl_socket_set_fd(struct nl_sock *sk, int protocol, int fd)
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err = getsockopt(fd, SOL_SOCKET, SO_TYPE, &so_type, &addrlen);
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if (err < 0) {
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NL_DBG(4, "nl_socket_set_fd(%p,%d): getsockopt() for SO_TYPE failed with %d (%s)\n",
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- sk, fd, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, fd, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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if (addrlen != sizeof(so_type))
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@@ -666,7 +662,7 @@ int nl_socket_set_fd(struct nl_sock *sk, int protocol, int fd)
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if (errno == ENOPROTOOPT)
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goto no_so_protocol;
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NL_DBG(4, "nl_socket_set_fd(%p,%d): getsockopt() for SO_PROTOCOL failed with %d (%s)\n",
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- sk, fd, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, fd, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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if (addrlen != sizeof(so_protocol))
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@@ -709,10 +705,8 @@ int nl_socket_set_nonblocking(const struct nl_sock *sk)
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return -NLE_BAD_SOCK;
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if (fcntl(sk->s_fd, F_SETFL, O_NONBLOCK) < 0) {
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- char buf[64];
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-
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NL_DBG(4, "nl_socket_set_nonblocking(%p): fcntl() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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@@ -813,7 +807,6 @@ int nl_socket_modify_err_cb(struct nl_sock *sk, enum nl_cb_kind kind,
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int nl_socket_set_buffer_size(struct nl_sock *sk, int rxbuf, int txbuf)
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{
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int err;
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- char buf[64];
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if (rxbuf <= 0)
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rxbuf = 32768;
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@@ -828,7 +821,7 @@ int nl_socket_set_buffer_size(struct nl_sock *sk, int rxbuf, int txbuf)
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&txbuf, sizeof(txbuf));
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if (err < 0) {
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NL_DBG(4, "nl_socket_set_buffer_size(%p): setsockopt() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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@@ -836,7 +829,7 @@ int nl_socket_set_buffer_size(struct nl_sock *sk, int rxbuf, int txbuf)
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&rxbuf, sizeof(rxbuf));
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if (err < 0) {
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NL_DBG(4, "nl_socket_set_buffer_size(%p): setsockopt() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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@@ -890,10 +883,8 @@ int nl_socket_set_passcred(struct nl_sock *sk, int state)
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err = setsockopt(sk->s_fd, SOL_SOCKET, SO_PASSCRED,
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&state, sizeof(state));
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if (err < 0) {
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- char buf[64];
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-
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NL_DBG(4, "nl_socket_set_passcred(%p): setsockopt() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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@@ -922,10 +913,8 @@ int nl_socket_recv_pktinfo(struct nl_sock *sk, int state)
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err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_PKTINFO,
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&state, sizeof(state));
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if (err < 0) {
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- char buf[64];
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-
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NL_DBG(4, "nl_socket_recv_pktinfo(%p): setsockopt() failed with %d (%s)\n",
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- sk, errno, strerror_r(errno, buf, sizeof(buf)));
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+ sk, errno, nl_strerror_l(errno));
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return -nl_syserr2nlerr(errno);
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}
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--
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2.9.3
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