Description

the /var/run/kamailio directory for the fifo and crtl files are denied for acces to the service
as i can see directory are owed byt root and only ower and group have
access

kamailio 4.4 backported by me for Debian jessie have this:
drwxr-xr-x 2 kamailio kamailio 100 Aug 15 17:33 kamailio
kamailio 5.2 installed on buster/testing build from sources:
drwxr-x--- 2 root root 120 Jan 30 09:35 kamailio

NOTE no definiton are setup, and surprise if i defined some, the only working dir are /tmp !!!

Troubleshooting

kamailio 4.4 backported by me for Debian jessie have this:
drwxr-xr-x 2 kamailio kamailio 100 Aug 15 17:33 kamailio
kamailio 5.2 installed on buster/testing build from sources:
drwxr-x--- 2 root root 120 Jan 30 09:35 kamailio

due that several issues are happened if we started using some modules
due unable to manage the socket control:

Jan 31 15:35:51 venenux-debian kamailio[16861]: 17(16889) ERROR:
<core> [core/io_wait.h:1040]: io_wait_loop_epoll(): epoll_wait(7,
0x7f6ed6f88d88, 0, 5000): Invalid argument [22]
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) ERROR: ctl
[ctl.c:390]: mod_destroy(): ERROR: ctl: could not delete unix socket
/var/run/kamailio//kamailio_ctl: Permission denied (13)
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: <core>
[db_pool.c:100]: pool_remove(): removing connection from the pool
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:85]: tm_shutdown(): start
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:88]: tm_shutdown(): emptying hash table
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:90]: tm_shutdown(): removing semaphores
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:92]: tm_shutdown(): destroying tmcb lists
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:95]: tm_shutdown(): done
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) ERROR:
jsonrpcs [jsonrpcs_fifo.c:599]: jsonrpc_fifo_destroy(): FIFO stat
failed: Permission denied
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) ERROR:
jsonrpcs [jsonrpcs_sock.c:516]: jsonrpc_dgram_destroy(): socket stat
failed: Permission denied

Reproduction

build from sources with default values enable dialog, blf support and asterisk and start service.. when try to control using socket kamailio cannot comunicate with itselft! very ironic!

Log Messages

Jan 31 15:35:51 venenux-debian kamailio[16861]: 17(16889) ERROR:
<core> [core/io_wait.h:1040]: io_wait_loop_epoll(): epoll_wait(7,
0x7f6ed6f88d88, 0, 5000): Invalid argument [22]
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) ERROR: ctl
[ctl.c:390]: mod_destroy(): ERROR: ctl: could not delete unix socket
/var/run/kamailio//kamailio_ctl: Permission denied (13)
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: <core>
[db_pool.c:100]: pool_remove(): removing connection from the pool
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:85]: tm_shutdown(): start
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:88]: tm_shutdown(): emptying hash table
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:90]: tm_shutdown(): removing semaphores
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:92]: tm_shutdown(): destroying tmcb lists
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) DEBUG: tm
[t_funcs.c:95]: tm_shutdown(): done
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) ERROR:
jsonrpcs [jsonrpcs_fifo.c:599]: jsonrpc_fifo_destroy(): FIFO stat
failed: Permission denied
Jan 31 15:35:51 venenux-debian kamailio[16861]: 0(16863) ERROR:
jsonrpcs [jsonrpcs_sock.c:516]: jsonrpc_dgram_destroy(): socket stat
failed: Permission denied

SIP Traffic

NOT RELATED

Additional Information

• Kamailio Version - output of kamailio -v

version: kamailio 5.2.1 (x86_64/linux) 
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown 
compiled with gcc 4.9.2

• Operating System:

Debian buster/testing

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