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remove existing smc socket on start (RHEL-40673)

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Resolves: RHEL-40673
This commit is contained in:
Miroslav Lichvar 2024-07-31 15:28:01 +02:00
parent ecefd36fc8
commit 41bff0bbb4
2 changed files with 136 additions and 2 deletions
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133
synce4l-smc.patch Normal file
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@ -0,0 +1,133 @@
commit 6edb7f5a974c8a80f68c7b82b1bde1c1b37b75bb
Author: Miroslav Lichvar <mlichvar@redhat.com>
Date: Wed Jun 5 12:55:29 2024 +0200
Change default smc_socket_path to /run/synce4l_socket
System services should use /run for sockets and other runtime files.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
diff --git a/README.md b/README.md
index 87623a9..c1c1d73 100644
--- a/README.md
+++ b/README.md
@@ -125,7 +125,7 @@ related to a running synce4l instance.
| `logging_level` | `6` | `0-7` | Minimum log level required to appear in a log. |
| `message_tag` | None | string | Tag reported in a log. |
| `poll_interval_msec` | 20 | 0-500 | Sleep time between subsequent SyncE clock polls |
-| `smc_socket_path` | `/tmp/synce4l_socket` | string | Full path to socket file for external application communication |
+| `smc_socket_path` | `/run/synce4l_socket` | string | Full path to socket file for external application communication |
| `use_syslog` | `1` | `0`, `1` | Set to 1 if `syslog` should be used. |
| `verbose` | `0` | `0`, `1` | Set to 1 to log extra information. |
@@ -200,7 +200,7 @@ logging_level 7
use_syslog 0
verbose 1
message_tag [synce4l]
-smc_socket_path /tmp/synce4l_socket
+smc_socket_path /run/synce4l_socket
[<synce1>]
network_option 1
@@ -239,7 +239,7 @@ logging_level 7
use_syslog 0
verbose 1
message_tag [synce4l]
-smc_socket_path /tmp/synce4l_socket
+smc_socket_path /run/synce4l_socket
[<synce1>]
network_option 1
diff --git a/config.c b/config.c
index bb438a6..274c2d3 100644
--- a/config.c
+++ b/config.c
@@ -180,7 +180,7 @@ struct config_item config_tab_synce[] = {
GLOB_ITEM_STR("message_tag", NULL),
GLOB_ITEM_INT("poll_interval_msec", 20, CLOCK_POLL_INTERVAL_MIN,
CLOCK_POLL_INTERVAL_MAX),
- GLOB_ITEM_STR("smc_socket_path", "/tmp/synce4l_socket"),
+ GLOB_ITEM_STR("smc_socket_path", "/run/synce4l_socket"),
GLOB_ITEM_INT("use_syslog", 1, 0, 1),
GLOB_ITEM_STR("userDescription", ""),
GLOB_ITEM_INT("verbose", 0, 0, 1),
diff --git a/configs/synce4l.cfg b/configs/synce4l.cfg
index ca12e9f..de92bd1 100644
--- a/configs/synce4l.cfg
+++ b/configs/synce4l.cfg
@@ -7,7 +7,7 @@ logging_level 7
use_syslog 0
verbose 1
message_tag [synce4l]
-smc_socket_path /tmp/synce4l_socket
+smc_socket_path /run/synce4l_socket
#
diff --git a/configs/synce4l_dpll.cfg b/configs/synce4l_dpll.cfg
index b814266..db4bd88 100644
--- a/configs/synce4l_dpll.cfg
+++ b/configs/synce4l_dpll.cfg
@@ -7,7 +7,7 @@ logging_level 6
use_syslog 0
verbose 1
message_tag [synce4l]
-smc_socket_path /tmp/synce4l_socket
+smc_socket_path /run/synce4l_socket
#
commit 2f50c7a8b98d99220108abb0163696dcfed77635
Author: Miroslav Lichvar <mlichvar@redhat.com>
Date: Wed Jun 5 13:05:18 2024 +0200
Check smc_socket_path length
Exit with an error message if the configured socket path is too long to
be bound as a Unix domain socket.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
diff --git a/synce_manager.c b/synce_manager.c
index 598ef7e..a42b823 100644
--- a/synce_manager.c
+++ b/synce_manager.c
@@ -256,6 +256,10 @@ static void *synce_manager_server_thread(void *arg)
exit(EXIT_FAILURE);
}
+ if (strlen(synce_clock_get_socket_path(clk)) >= sizeof(server.sun_path)) {
+ pr_err("%s smc_socket_path is too long", __func__);
+ exit(EXIT_FAILURE);
+ }
server.sun_family = AF_UNIX;
snprintf(server.sun_path, sizeof(server.sun_path), "%s",
synce_clock_get_socket_path(clk));
commit b5a9ad4f0aa1fb98e4ac060c91a08d82fe66e7d2
Author: Miroslav Lichvar <mlichvar@redhat.com>
Date: Wed Jun 5 13:07:04 2024 +0200
Unlink smc_socket_path before binding
Remove the Unix domain socket if it already exists (e.g. previous
synce4l instance didn't exit cleanly) to avoid failing in the bind()
call.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
diff --git a/synce_manager.c b/synce_manager.c
index a42b823..6baf18c 100644
--- a/synce_manager.c
+++ b/synce_manager.c
@@ -264,6 +264,8 @@ static void *synce_manager_server_thread(void *arg)
snprintf(server.sun_path, sizeof(server.sun_path), "%s",
synce_clock_get_socket_path(clk));
+ unlink(server.sun_path);
+
if (bind(server_fd, (struct sockaddr *)&server, sizeof(server)) < 0) {
pr_err("%s Bind failed", __func__);
exit(EXIT_FAILURE);

5
synce4l.spec
View File

@ -10,6 +10,8 @@ Source1: synce4l.service
# Fix compiler warnings to avoid build failures with -Werror
Patch1: synce4l-ccwarns.patch
# Change default smc socket path and remove existing socket on start
Patch2: synce4l-smc.patch
BuildRequires: gcc make systemd
BuildRequires: libnl3-devel
@ -24,13 +26,12 @@ supported hardware by processing Ethernet Synchronization Messaging Channel
(NIC).
%prep
%autosetup
%autosetup -p1
sed \
-e 's|^\(logging_level *\)[0-7]|\16|' \
-e 's|^\(use_syslog *\)[01]|\11|' \
-e 's|^\(verbose *\)[01]|\10|' \
-e 's|^\(smc_socket_path *\)/tmp|\1/run|' \
< configs/synce4l_dpll.cfg > synce4l.conf
touch -r configs/synce4l_dpll.cfg synce4l.conf