libbsc: Create pcu-socket only as specified in config file
Since commit b4999b60d48bcbb5aa575973d068e07ab672e095 we created PCU
sockets at hard-coded paths in the filesystem by default for all BTSs.
This is inflexible and prevents the use of multiple BSC instances on a
single filesystem, or the placement of the sockets in a more secure
location than /tmp.
The new approach with this patch is that
* no PCU sockets are created by default
* only for those BTSs where a 'pcu-socket' is configured via VTY,
the socket will actually be created
Change-Id: Ie9079470584777dcc31f85f9bf0808f479156ccb
Closes: OS#2293
diff --git a/openbsc/include/openbsc/gsm_data_shared.h b/openbsc/include/openbsc/gsm_data_shared.h
index 3371fb9..1380a6c 100644
--- a/openbsc/include/openbsc/gsm_data_shared.h
+++ b/openbsc/include/openbsc/gsm_data_shared.h
@@ -870,6 +870,7 @@
struct amr_multirate_conf mr_half;
/* PCU socket state */
+ char *pcu_sock_path;
struct pcu_sock_state *pcu_state;
#endif /* ROLE_BSC */
diff --git a/openbsc/include/openbsc/pcu_if.h b/openbsc/include/openbsc/pcu_if.h
index 0c355b7..1f398b4 100644
--- a/openbsc/include/openbsc/pcu_if.h
+++ b/openbsc/include/openbsc/pcu_if.h
@@ -1,8 +1,6 @@
#ifndef _PCU_IF_H
#define _PCU_IF_H
-#define PCU_SOCK_DEFAULT "/tmp/pcu_bts"
-
#include <osmocom/gsm/l1sap.h>
extern int pcu_direct;
diff --git a/openbsc/src/libbsc/bsc_init.c b/openbsc/src/libbsc/bsc_init.c
index 520b2e2..caec800 100644
--- a/openbsc/src/libbsc/bsc_init.c
+++ b/openbsc/src/libbsc/bsc_init.c
@@ -507,8 +507,6 @@
{
struct gsm_bts *bts;
int rc;
- char pcu_sock_path[PATH_MAX];
- char pcu_sock_path_ending[PATH_MAX];
rc = vty_read_config_file(config_file, NULL);
if (rc < 0) {
@@ -536,18 +534,6 @@
LOGP(DNM, LOGL_FATAL, "Error enabling E1 input driver\n");
return rc;
}
-
- strcpy(pcu_sock_path, PCU_SOCK_DEFAULT);
- sprintf(pcu_sock_path_ending,"_%i", bts->nr);
- if (bts->nr > 0)
- strcat(pcu_sock_path, pcu_sock_path_ending);
- rc = pcu_sock_init(pcu_sock_path, bts);
-
- if (rc < 0) {
- LOGP(DNM, LOGL_FATAL,
- "PCU L1 socket failed for bts %i\n", bts->nr);
- return rc;
- }
}
return 0;
diff --git a/openbsc/src/libbsc/bsc_vty.c b/openbsc/src/libbsc/bsc_vty.c
index f14a205..f17bde6 100644
--- a/openbsc/src/libbsc/bsc_vty.c
+++ b/openbsc/src/libbsc/bsc_vty.c
@@ -53,6 +53,7 @@
#include <openbsc/abis_rsl.h>
#include <openbsc/bsc_msc_data.h>
#include <openbsc/osmo_bsc_rf.h>
+#include <openbsc/pcu_if.h>
#include <openbsc/common_cs.h>
@@ -280,6 +281,8 @@
vty_out(vty, "Early Classmark Sending: %s%s",
bts->early_classmark_allowed ? "allowed" : "forbidden",
VTY_NEWLINE);
+ if (bts->pcu_sock_path)
+ vty_out(vty, "PCU Socket Path: %s%s", bts->pcu_sock_path, VTY_NEWLINE);
if (is_ipaccess_bts(bts))
vty_out(vty, " Unit ID: %u/%u/0, OML Stream ID 0x%02x%s",
bts->ip_access.site_id, bts->ip_access.bts_id,
@@ -764,6 +767,8 @@
vty_out(vty, " depends-on-bts %d%s", bts_nr, VTY_NEWLINE);
}
}
+ if (bts->pcu_sock_path)
+ vty_out(vty, " pcu-socket %s%s", bts->pcu_sock_path, VTY_NEWLINE);
config_write_bts_model(vty, bts);
}
@@ -2933,6 +2938,26 @@
return CMD_SUCCESS;
}
+DEFUN(cfg_bts_pcu_sock, cfg_bts_pcu_sock_cmd,
+ "pcu-socket PATH",
+ "PCU Socket Path for using OsmoPCU co-located with BSC (legacy BTS)\n"
+ "Path in the file system for the unix-domain PCU socket\n")
+{
+ struct gsm_bts *bts = vty->index;
+ int rc;
+
+ bsc_replace_string(bts, &bts->pcu_sock_path, argv[0]);
+ pcu_sock_exit(bts);
+ rc = pcu_sock_init(bts->pcu_sock_path, bts);
+ if (rc < 0) {
+ vty_out(vty, "%% Error creating PCU socket `%s' for BTS %u%s",
+ bts->pcu_sock_path, bts->nr, VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ return CMD_SUCCESS;
+}
+
#define EXCL_RFLOCK_STR "Exclude this BTS from the global RF Lock\n"
DEFUN(cfg_bts_excl_rf_lock,
@@ -4231,6 +4256,7 @@
install_element(BTS_NODE, &cfg_bts_amr_hr_hyst2_cmd);
install_element(BTS_NODE, &cfg_bts_amr_hr_hyst3_cmd);
install_element(BTS_NODE, &cfg_bts_amr_hr_start_mode_cmd);
+ install_element(BTS_NODE, &cfg_bts_pcu_sock_cmd);
install_element(BTS_NODE, &cfg_trx_cmd);
install_node(&trx_node, dummy_config_write);