From bcf3b3d0d589666575d9b044d0779be2e40e1762 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Holger=20Wei=C3=9F?= Date: Wed, 10 Nov 2010 23:03:44 +0100 Subject: Allow user to specify the IP address epmd binds to The IP address(es) epmd binds to can now be specified by the user, either via epmd's new "-address" option or (if that's not used) by setting the environment variable ERL_EPMD_ADDRESS. Multiple addresses may be specified using a comma-separated list. If the loopback address is not in this list, it will be added implicitly, so that the daemon can be queried by an interactive epmd process. --- erts/configure.in | 2 +- erts/doc/src/epmd.xml | 19 +++++ erts/doc/src/erl.xml | 9 +++ erts/epmd/src/epmd.c | 37 ++++++--- erts/epmd/src/epmd_cli.c | 2 +- erts/epmd/src/epmd_int.h | 59 +++++++------- erts/epmd/src/epmd_srv.c | 207 +++++++++++++++++++++++++++++++---------------- 7 files changed, 224 insertions(+), 111 deletions(-) (limited to 'erts') diff --git a/erts/configure.in b/erts/configure.in index 8c6f2ac076..fdaeb90d9c 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -1716,7 +1716,7 @@ AC_CHECK_FUNCS([getnameinfo getipnodebyname getipnodebyaddr gethostbyname2]) AC_CHECK_FUNCS([ieee_handler fpsetmask finite isnan isinf res_gethostbyname dlopen \ pread pwrite writev memmove strerror strerror_r strncasecmp \ - gethrtime localtime_r gmtime_r mmap mremap memcpy mallopt \ + gethrtime localtime_r gmtime_r inet_pton mmap mremap memcpy mallopt \ sbrk _sbrk __sbrk brk _brk __brk \ flockfile fstat strlcpy strlcat setsid posix2time setlocale nl_langinfo poll]) diff --git a/erts/doc/src/epmd.xml b/erts/doc/src/epmd.xml index f01cf90a36..f2ea325be7 100644 --- a/erts/doc/src/epmd.xml +++ b/erts/doc/src/epmd.xml @@ -116,6 +116,16 @@

These options are available when starting the actual name server. The name server is normally started automatically by the erl command (if not already available), but it can also be started at i.e. system start-up.

+ + +

Let this instance of epmd listen only on the + comma-separated list of IP addresses and on the loopback address + (which is implicitely added to the list if it has not been + specified). This can also be set using the + environment variable, see the + section Environment + variables below.

+

Let this instance of epmd listen to another TCP port than @@ -228,6 +238,15 @@ Environment variables + + +

This environment variable may be set to a comma-separated + list of IP addresses, in which case the epmd daemon + will listen only on the specified address(es) and on the + loopback address (which is implicitely added to the list if it + has not been specified). The default behaviour is to listen on + all available IP addresses.

+

This environment variable can contain the port number epmd will use. diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml index 09c9cf6812..2fd804cd04 100644 --- a/erts/doc/src/erl.xml +++ b/erts/doc/src/erl.xml @@ -981,6 +981,15 @@ add to the code path. See code(3).

 + + +

This environment variable may be set to a comma-separated + list of IP addresses, in which case the + epmd daemon + will listen only on the specified address(es) and on the + loopback address (which is implicitely added to the list if it + has not been specified).

+

This environment variable can contain the port number to use when diff --git a/erts/epmd/src/epmd.c b/erts/epmd/src/epmd.c index 65ff0cd6b2..9ba1069663 100644 --- a/erts/epmd/src/epmd.c +++ b/erts/epmd/src/epmd.c @@ -33,6 +33,7 @@ static void usage(EpmdVars *); static void run_daemon(EpmdVars*); +static char* get_addresses(void); static int get_port_no(void); static int check_relaxed(void); #ifdef __WIN32__ @@ -133,6 +134,7 @@ int main(int argc, char** argv) { EpmdVars g_empd_vars; EpmdVars *g = &g_empd_vars; + int i; #ifdef __WIN32__ WORD wVersionRequested; WSADATA wsaData; @@ -158,8 +160,9 @@ int main(int argc, char** argv) g->argv = NULL; #endif - g->port = get_port_no(); - g->debug = 0; + g->addresses = get_addresses(); + g->port = get_port_no(); + g->debug = 0; g->silent = 0; g->is_daemon = 0; @@ -168,12 +171,14 @@ int main(int argc, char** argv) g->delay_accept = 0; g->delay_write = 0; g->progname = argv[0]; - g->listenfd = -1; g->conn = NULL; g->nodes.reg = g->nodes.unreg = g->nodes.unreg_tail = NULL; g->nodes.unreg_count = 0; g->active_conn = 0; + for (i = 0; i < MAX_LISTEN_SOCKETS; i++) + g->listenfd[i] = -1; + argc--; argv++; while (argc > 0) { @@ -208,6 +213,11 @@ int main(int argc, char** argv) else usage(g); epmd_cleanup_exit(g,0); + } else if (strcmp(argv[0], "-address") == 0) { + if (argc == 1) + usage(g); + g->addresses = argv[1]; + argv += 2; argc -= 2; } else if (strcmp(argv[0], "-port") == 0) { if ((argc == 1) || ((g->port = atoi(argv[1])) == 0)) @@ -252,13 +262,10 @@ int main(int argc, char** argv) /* * max_conn must not be greater than FD_SETSIZE. * (at least QNX crashes) - * - * More correctly, it must be FD_SETSIZE - 1, beacuse the - * listen FD is stored outside the connection array. */ if (g->max_conn > FD_SETSIZE) { - g->max_conn = FD_SETSIZE - 1; + g->max_conn = FD_SETSIZE; } if (g->is_daemon) { @@ -393,11 +400,14 @@ static void run_daemon(EpmdVars *g) static void usage(EpmdVars *g) { - fprintf(stderr, "usage: epmd [-d|-debug] [DbgExtra...] [-port No] [-daemon]\n"); - fprintf(stderr, " [-relaxed_command_check]\n"); + fprintf(stderr, "usage: epmd [-d|-debug] [DbgExtra...] [-address List]\n"); + fprintf(stderr, " [-port No] [-daemon] [-relaxed_command_check]\n"); fprintf(stderr, " epmd [-d|-debug] [-port No] [-names|-kill|-stop name]\n\n"); fprintf(stderr, "See the Erlang epmd manual page for info about the usage.\n\n"); fprintf(stderr, "Regular options\n"); + fprintf(stderr, " -address List\n"); + fprintf(stderr, " Let epmd listen only on the comma-separated list of IP\n"); + fprintf(stderr, " addresses (and on the loopback interface).\n"); fprintf(stderr, " -port No\n"); fprintf(stderr, " Let epmd listen to another port than default %d\n", EPMD_PORT_NO); @@ -555,8 +565,9 @@ void epmd_cleanup_exit(EpmdVars *g, int exitval) epmd_conn_close(g,&g->conn[i]); free(g->conn); } - if(g->listenfd >= 0) - close(g->listenfd); + for(i=0; i < MAX_LISTEN_SOCKETS; i++) + if(g->listenfd[i] >= 0) + close(g->listenfd[i]); free_all_nodes(g); if(g->argv){ for(i=0; g->argv[i] != NULL; ++i) @@ -568,6 +579,10 @@ void epmd_cleanup_exit(EpmdVars *g, int exitval) exit(exitval); } +static char* get_addresses(void) +{ + return getenv("ERL_EPMD_ADDRESS"); +} static int get_port_no(void) { char* port_str = getenv("ERL_EPMD_PORT"); diff --git a/erts/epmd/src/epmd_cli.c b/erts/epmd/src/epmd_cli.c index 7c60ba0420..ac55ba6bb6 100644 --- a/erts/epmd/src/epmd_cli.c +++ b/erts/epmd/src/epmd_cli.c @@ -137,7 +137,7 @@ static int conn_to_epmd(EpmdVars *g) { /* store port number in unsigned short */ unsigned short sport = g->port; - SET_ADDR_LOOPBACK(address, FAMILY, sport); + SET_ADDR(address, EPMD_ADDR_LOOPBACK, sport); } if (connect(connect_sock, (struct sockaddr*)&address, sizeof address) < 0) diff --git a/erts/epmd/src/epmd_int.h b/erts/epmd/src/epmd_int.h index c2558d52a1..2a0de4df9c 100644 --- a/erts/epmd/src/epmd_int.h +++ b/erts/epmd/src/epmd_int.h @@ -168,42 +168,40 @@ #if defined(HAVE_IN6) && defined(AF_INET6) && defined(EPMD6) #define EPMD_SOCKADDR_IN sockaddr_in6 -#define FAMILY AF_INET6 - -#define SET_ADDR_LOOPBACK(addr, af, port) do { \ - memset((char*)&(addr), 0, sizeof(addr)); \ - (addr).sin6_family = (af); \ - (addr).sin6_flowinfo = 0; \ - (addr).sin6_addr = in6addr_loopback; \ - (addr).sin6_port = htons(port); \ +#define EPMD_IN_ADDR in6_addr +#define EPMD_S_ADDR s6_addr +#define EPMD_ADDR_LOOPBACK in6addr_loopback.s6_addr +#define EPMD_ADDR_ANY in6addr_any.s6_addr +#define FAMILY AF_INET6 + +#define SET_ADDR(dst, addr, port) do { \ + memset((char*)&(dst), 0, sizeof(dst)); \ + memcpy((char*)&(dst).sin6_addr.s6_addr, (char*)&(addr), 16); \ + (dst).sin6_family = AF_INET6; \ + (dst).sin6_flowinfo = 0; \ + (dst).sin6_port = htons(port); \ } while(0) -#define SET_ADDR_ANY(addr, af, port) do { \ - memset((char*)&(addr), 0, sizeof(addr)); \ - (addr).sin6_family = (af); \ - (addr).sin6_flowinfo = 0; \ - (addr).sin6_addr = in6addr_any; \ - (addr).sin6_port = htons(port); \ - } while(0) +#define IS_ADDR_LOOPBACK(addr) \ + (memcmp((addr).s6_addr, in6addr_loopback.s6_addr, 16) == 0) #else /* Not IP v6 */ #define EPMD_SOCKADDR_IN sockaddr_in -#define FAMILY AF_INET - -#define SET_ADDR_LOOPBACK(addr, af, port) do { \ - memset((char*)&(addr), 0, sizeof(addr)); \ - (addr).sin_family = (af); \ - (addr).sin_addr.s_addr = htonl(INADDR_LOOPBACK); \ - (addr).sin_port = htons(port); \ +#define EPMD_IN_ADDR in_addr +#define EPMD_S_ADDR s_addr +#define EPMD_ADDR_LOOPBACK htonl(INADDR_LOOPBACK) +#define EPMD_ADDR_ANY htonl(INADDR_ANY) +#define FAMILY AF_INET + +#define SET_ADDR(dst, addr, port) do { \ + memset((char*)&(dst), 0, sizeof(dst)); \ + (dst).sin_family = AF_INET; \ + (dst).sin_addr.s_addr = (addr); \ + (dst).sin_port = htons(port); \ } while(0) -#define SET_ADDR_ANY(addr, af, port) do { \ - memset((char*)&(addr), 0, sizeof(addr)); \ - (addr).sin_family = (af); \ - (addr).sin_addr.s_addr = htonl(INADDR_ANY); \ - (addr).sin_port = htons(port); \ - } while(0) +#define IS_ADDR_LOOPBACK(addr) ((addr).s_addr == htonl(INADDR_LOOPBACK)) #endif /* Not IP v6 */ @@ -231,6 +229,8 @@ /* Maximum length of a node name == atom name */ #define MAXSYMLEN 255 +#define MAX_LISTEN_SOCKETS 16 + #define INBUF_SIZE 1024 #define OUTBUF_SIZE 1024 @@ -299,7 +299,8 @@ typedef struct { Connection *conn; Nodes nodes; fd_set orig_read_mask; - int listenfd; + int listenfd[MAX_LISTEN_SOCKETS]; + char *addresses; char **argv; } EpmdVars; diff --git a/erts/epmd/src/epmd_srv.c b/erts/epmd/src/epmd_srv.c index ef471a473a..73b09e7299 100644 --- a/erts/epmd/src/epmd_srv.c +++ b/erts/epmd/src/epmd_srv.c @@ -24,6 +24,10 @@ #include "epmd.h" /* Renamed from 'epmd_r4.h' */ #include "epmd_int.h" +#ifndef INADDR_NONE +# define INADDR_NONE 0xffffffff +#endif + /* * * This server is a local name server for Erlang nodes. Erlang nodes can @@ -79,90 +83,154 @@ static void print_names(EpmdVars*); void run(EpmdVars *g) { - int listensock; + struct EPMD_SOCKADDR_IN iserv_addr[MAX_LISTEN_SOCKETS]; + int listensock[MAX_LISTEN_SOCKETS]; + int num_sockets; int i; int opt; - struct EPMD_SOCKADDR_IN iserv_addr; + unsigned short sport = g->port; node_init(g); g->conn = conn_init(g); dbg_printf(g,2,"try to initiate listening port %d", g->port); - - if ((listensock = socket(FAMILY,SOCK_STREAM,0)) < 0) { - dbg_perror(g,"error opening stream socket"); - epmd_cleanup_exit(g,1); - } - g->listenfd = listensock; + + if (g->addresses != NULL) + { + char *tmp; + char *token; + int loopback_ok = 0; + + if ((tmp = (char *)malloc(strlen(g->addresses) + 1)) == NULL) + { + dbg_perror(g,"cannot allocate memory"); + epmd_cleanup_exit(g,1); + } + strcpy(tmp,g->addresses); + + for(token = strtok(tmp,", "), num_sockets = 0; + token != NULL; + token = strtok(NULL,", "), num_sockets++) + { + struct EPMD_IN_ADDR addr; +#ifdef HAVE_INET_PTON + int ret; + + if ((ret = inet_pton(FAMILY,token,&addr)) == -1) + { + dbg_perror(g,"cannot convert IP address to network format"); + epmd_cleanup_exit(g,1); + } + else if (ret == 0) +#elif !defined(EPMD6) + if ((addr.EPMD_S_ADDR = inet_addr(token)) == INADDR_NONE) +#endif + { + dbg_tty_printf(g,0,"cannot parse IP address \"%s\"",token); + epmd_cleanup_exit(g,1); + } + + if (IS_ADDR_LOOPBACK(addr)) + loopback_ok = 1; + + if (num_sockets - loopback_ok == MAX_LISTEN_SOCKETS - 1) + { + dbg_tty_printf(g,0,"cannot listen on more than %d IP addresses", + MAX_LISTEN_SOCKETS); + epmd_cleanup_exit(g,1); + } + + SET_ADDR(iserv_addr[num_sockets],addr.EPMD_S_ADDR,sport); + } + + free(tmp); + + if (!loopback_ok) + { + SET_ADDR(iserv_addr[num_sockets],EPMD_ADDR_LOOPBACK,sport); + num_sockets++; + } + } + else + { + SET_ADDR(iserv_addr[0],EPMD_ADDR_ANY,sport); + num_sockets = 1; + } + +#if !defined(__WIN32__) + /* We ignore the SIGPIPE signal that is raised when we call write + twice on a socket closed by the other end. */ + signal(SIGPIPE, SIG_IGN); +#endif /* * Initialize number of active file descriptors. * Stdin, stdout, and stderr are still open. - * One for the listen socket. */ - g->active_conn = 3+1; + g->active_conn = 3 + num_sockets; + g->max_conn -= num_sockets; + + FD_ZERO(&g->orig_read_mask); + + for (i = 0; i < num_sockets; i++) + { + if ((listensock[i] = socket(FAMILY,SOCK_STREAM,0)) < 0) + { + dbg_perror(g,"error opening stream socket"); + epmd_cleanup_exit(g,1); + } + g->listenfd[i] = listensock[i]; - /* - * Note that we must not enable the SO_REUSEADDR on Windows, - * because addresses will be reused even if they are still in use. - */ + /* + * Note that we must not enable the SO_REUSEADDR on Windows, + * because addresses will be reused even if they are still in use. + */ #if !defined(__WIN32__) - /* We ignore the SIGPIPE signal that is raised when we call write - twice on a socket closed by the other end. */ - signal(SIGPIPE, SIG_IGN); - - opt = 1; /* Set this option */ - if (setsockopt(listensock,SOL_SOCKET,SO_REUSEADDR,(char* ) &opt, - sizeof(opt)) <0) { - dbg_perror(g,"can't set sockopt"); - epmd_cleanup_exit(g,1); - } + opt = 1; + if (setsockopt(listensock[i],SOL_SOCKET,SO_REUSEADDR,(char* ) &opt, + sizeof(opt)) <0) + { + dbg_perror(g,"can't set sockopt"); + epmd_cleanup_exit(g,1); + } #endif - /* In rare cases select returns because there is someone - to accept but the request is withdrawn before the - accept function is called. We set the listen socket - to be non blocking to prevent us from being hanging - in accept() waiting for the next request. */ + /* In rare cases select returns because there is someone + to accept but the request is withdrawn before the + accept function is called. We set the listen socket + to be non blocking to prevent us from being hanging + in accept() waiting for the next request. */ #if (defined(__WIN32__) || defined(NO_FCNTL)) - opt = 1; - if (ioctl(listensock, FIONBIO, &opt) != 0) /* Gives warning in VxWorks */ + opt = 1; + /* Gives warning in VxWorks */ + if (ioctl(listensock[i], FIONBIO, &opt) != 0) #else - opt = fcntl(listensock, F_GETFL, 0); - if (fcntl(listensock, F_SETFL, opt | O_NONBLOCK) == -1) + opt = fcntl(listensock[i], F_GETFL, 0); + if (fcntl(listensock[i], F_SETFL, opt | O_NONBLOCK) == -1) #endif /* __WIN32__ || VXWORKS */ - dbg_perror(g,"failed to set non-blocking mode of listening socket %d", - listensock); + dbg_perror(g,"failed to set non-blocking mode of listening socket %d", + listensock[i]); - { /* store port number in unsigned short */ - unsigned short sport = g->port; - SET_ADDR_ANY(iserv_addr, FAMILY, sport); - } - - if(bind(listensock,(struct sockaddr*) &iserv_addr, sizeof(iserv_addr)) < 0 ) - { - if (errno == EADDRINUSE) - { - dbg_tty_printf(g,1,"there is already a epmd running at port %d", - g->port); - epmd_cleanup_exit(g,0); - } - else + if (bind(listensock[i], (struct sockaddr*) &iserv_addr[i], + sizeof(iserv_addr[i])) < 0) { - dbg_perror(g,"failed to bind socket"); - epmd_cleanup_exit(g,1); + if (errno == EADDRINUSE) + { + dbg_tty_printf(g,1,"there is already a epmd running at port %d", + g->port); + epmd_cleanup_exit(g,0); + } + else + { + dbg_perror(g,"failed to bind socket"); + epmd_cleanup_exit(g,1); + } } + listen(listensock[i],SOMAXCONN); + FD_SET(listensock[i],&g->orig_read_mask); } - dbg_printf(g,2,"starting"); - - listen(listensock, SOMAXCONN); - - - FD_ZERO(&g->orig_read_mask); - FD_SET(listensock,&g->orig_read_mask); - dbg_tty_printf(g,2,"entering the main select() loop"); select_again: @@ -198,17 +266,18 @@ void run(EpmdVars *g) sleep(g->delay_accept); } - if (FD_ISSET(listensock,&read_mask)) { - if (do_accept(g, listensock) && g->active_conn < g->max_conn) { - /* - * The accept() succeeded, and we have at least one file - * descriptor still free, which means that another accept() - * could succeed. Go do do another select(), in case there - * are more incoming connections waiting to be accepted. - */ - goto select_again; + for (i = 0; i < num_sockets; i++) + if (FD_ISSET(listensock[i],&read_mask)) { + if (do_accept(g, listensock[i]) && g->active_conn < g->max_conn) { + /* + * The accept() succeeded, and we have at least one file + * descriptor still free, which means that another accept() + * could succeed. Go do do another select(), in case there + * are more incoming connections waiting to be accepted. + */ + goto select_again; + } } - } /* Check all open streams marked by select for data or a close. We also close all open sockets except ALIVE -- cgit v1.2.3 From 5b68030b9d57a839ad798415f30936660ca83904 Mon Sep 17 00:00:00 2001 From: Michael Santos Date: Wed, 24 Nov 2010 19:38:04 -0500 Subject: epmd: include host address in local access check In FreeBSD jails, the source and destination address of connections to localhost are changed to be the IP address of the jail. Consider connections from the host's IP address to itself (e.g., the source and destination address match) to be local for the access control checks. Reported-By: tom@diogunix.com --- erts/epmd/src/epmd_srv.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'erts') diff --git a/erts/epmd/src/epmd_srv.c b/erts/epmd/src/epmd_srv.c index ef471a473a..ace736b836 100644 --- a/erts/epmd/src/epmd_srv.c +++ b/erts/epmd/src/epmd_srv.c @@ -736,6 +736,7 @@ static int conn_open(EpmdVars *g,int fd) for (i = 0; i < g->max_conn; i++) { if (g->conn[i].open == EPMD_FALSE) { struct sockaddr_in si; + struct sockaddr_in di; #ifdef HAVE_SOCKLEN_T socklen_t st; #else @@ -756,12 +757,16 @@ static int conn_open(EpmdVars *g,int fd) /* Determine if connection is from localhost */ if (getpeername(s->fd,(struct sockaddr*) &si,&st) || st < sizeof(si)) { - /* Failure to get peername is regarder as non local host */ + /* Failure to get peername is regarded as non local host */ s->local_peer = EPMD_FALSE; } else { + /* Only 127.x.x.x and connections from the host's IP address + allowed, no false positives */ s->local_peer = - ((((unsigned) ntohl(si.sin_addr.s_addr)) & 0xFF000000U) == - 0x7F000000U); /* Only 127.x.x.x allowed, no false positives */ + (((((unsigned) ntohl(si.sin_addr.s_addr)) & 0xFF000000U) == + 0x7F000000U) || + (getsockname(s->fd,(struct sockaddr*) &di,&st) ? + EPMD_FALSE : si.sin_addr.s_addr == di.sin_addr.s_addr)); } dbg_tty_printf(g,2,(s->local_peer) ? "Local peer connected" : "Non-local peer connected"); -- cgit v1.2.3 From 345454e7dcfd4bc38992870cf5aa5ab7efe0c475 Mon Sep 17 00:00:00 2001 From: Tuncer Ayaz Date: Thu, 10 Mar 2011 20:50:46 +0100 Subject: erts: Remove unused variables --- erts/emulator/beam/beam_bif_load.c | 3 --- erts/emulator/beam/beam_load.c | 2 -- erts/emulator/beam/bif.c | 2 -- erts/emulator/beam/dist.c | 2 -- erts/emulator/beam/erl_bits.c | 6 ------ erts/emulator/beam/erl_gc.c | 3 +-- erts/emulator/beam/erl_process.c | 2 -- erts/emulator/beam/erl_unicode.c | 2 -- erts/emulator/beam/io.c | 5 +---- erts/etc/unix/to_erl.c | 8 +------- 10 files changed, 3 insertions(+), 32 deletions(-) (limited to 'erts') diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c index 6ae9736141..1ca405961f 100644 --- a/erts/emulator/beam/beam_bif_load.c +++ b/erts/emulator/beam/beam_bif_load.c @@ -472,9 +472,6 @@ check_process_code(Process* rp, Module* modp) for (oh = MSO(rp).first; oh; oh = oh->next) { if (thing_subtag(oh->thing_word) == FUN_SUBTAG) { ErlFunThing* funp = (ErlFunThing*) oh; - BeamInstr* fun_code; - - fun_code = funp->fe->address; if (INSIDE((BeamInstr *) funp->fe->address)) { if (done_gc) { diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c index 788cb4209c..2a28002957 100644 --- a/erts/emulator/beam/beam_load.c +++ b/erts/emulator/beam/beam_load.c @@ -1413,7 +1413,6 @@ static int load_code(LoaderState* stp) { int i; - int tmp; int ci; int last_func_start = 0; char* sign; @@ -1933,7 +1932,6 @@ load_code(LoaderState* stp) case 'P': /* Byte offset into tuple or stack */ case 'Q': /* Like 'P', but packable */ VerifyTag(stp, tag, TAG_u); - tmp = tmp_op->a[arg].val; code[ci++] = (BeamInstr) ((tmp_op->a[arg].val+1) * sizeof(Eterm)); break; case 'l': /* Floating point register. */ diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c index f01580eb2b..6b1ce823cb 100644 --- a/erts/emulator/beam/bif.c +++ b/erts/emulator/beam/bif.c @@ -368,7 +368,6 @@ static int demonitor(Process *c_p, Eterm ref) ErtsMonitor *mon = NULL; /* The monitor entry to delete */ Process *rp; /* Local target process */ Eterm to = NIL; /* Monitor link traget */ - Eterm ref_p; /* Pid of this end */ DistEntry *dep = NULL; /* Target's distribution entry */ int deref_de = 0; int res; @@ -381,7 +380,6 @@ static int demonitor(Process *c_p, Eterm ref) res = ERTS_DEMONITOR_BADARG; goto done; /* Cannot be this monitor's ref */ } - ref_p = c_p->id; mon = erts_lookup_monitor(c_p->monitors, ref); if (!mon) { diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c index 02910fad90..54f029bdc5 100644 --- a/erts/emulator/beam/dist.c +++ b/erts/emulator/beam/dist.c @@ -900,7 +900,6 @@ int erts_net_message(Port *prt, ErtsDistExternal ede; byte *t; Sint ctl_len; - int orig_ctl_len; Eterm arg; Eterm from, to; Eterm watcher, watched; @@ -981,7 +980,6 @@ int erts_net_message(Port *prt, PURIFY_MSG("data error"); goto data_error; } - orig_ctl_len = ctl_len; if (ctl_len > DIST_CTL_DEFAULT_SIZE) { ctl = erts_alloc(ERTS_ALC_T_DCTRL_BUF, ctl_len * sizeof(Eterm)); diff --git a/erts/emulator/beam/erl_bits.c b/erts/emulator/beam/erl_bits.c index 6f8a7436d5..0174e5fc43 100644 --- a/erts/emulator/beam/erl_bits.c +++ b/erts/emulator/beam/erl_bits.c @@ -177,7 +177,6 @@ erts_bs_get_integer_2(Process *p, Uint num_bits, unsigned flags, ErlBinMatchBuff byte* LSB; byte* MSB; Uint* hp; - Uint* hp_end; Uint words_needed; Uint actual; Uint v32; @@ -405,7 +404,6 @@ erts_bs_get_integer_2(Process *p, Uint num_bits, unsigned flags, ErlBinMatchBuff default: words_needed = 1+WSIZE(bytes); hp = HeapOnlyAlloc(p, words_needed); - hp_end = hp + words_needed; res = bytes_to_big(LSB, bytes, sgn, hp); if (is_small(res)) { p->htop = hp; @@ -425,7 +423,6 @@ Eterm erts_bs_get_binary_2(Process *p, Uint num_bits, unsigned flags, ErlBinMatchBuffer* mb) { ErlSubBin* sb; - size_t num_bytes; /* Number of bytes in binary. */ if (mb->size - mb->offset < num_bits) { /* Asked for too many bits. */ return THE_NON_VALUE; @@ -435,7 +432,6 @@ erts_bs_get_binary_2(Process *p, Uint num_bits, unsigned flags, ErlBinMatchBuffe * From now on, we can't fail. */ - num_bytes = NBYTES(num_bits); sb = (ErlSubBin *) HeapOnlyAlloc(p, ERL_SUB_BIN_SIZE); sb->thing_word = HEADER_SUB_BIN; @@ -1557,7 +1553,6 @@ Uint32 erts_bs_get_unaligned_uint32(ErlBinMatchBuffer* mb) { Uint bytes; - Uint bits; Uint offs; byte bigbuf[4]; byte* LSB; @@ -1567,7 +1562,6 @@ erts_bs_get_unaligned_uint32(ErlBinMatchBuffer* mb) ASSERT(mb->size - mb->offset >= 32); bytes = 4; - bits = 8; offs = 0; LSB = bigbuf; diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c index d9150d86fe..c30d67ac88 100644 --- a/erts/emulator/beam/erl_gc.c +++ b/erts/emulator/beam/erl_gc.c @@ -455,7 +455,6 @@ erts_garbage_collect_hibernate(Process* p) Eterm* heap; Eterm* htop; Rootset rootset; - int n; char* src; Uint src_size; Uint actual_size; @@ -486,7 +485,7 @@ erts_garbage_collect_hibernate(Process* p) sizeof(Eterm)*heap_size); htop = heap; - n = setup_rootset(p, p->arg_reg, p->arity, &rootset); + (void) setup_rootset(p, p->arg_reg, p->arity, &rootset); #if HIPE hipe_empty_nstack(p); #endif diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index 428ca12eb1..841730b282 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -1267,7 +1267,6 @@ ssi_flags_set_wake(ErtsSchedulerSleepInfo *ssi) static void wake_scheduler(ErtsRunQueue *rq, int incq, int one) { - int res; ErtsSchedulerSleepInfo *ssi; ErtsSchedulerSleepList *sl; @@ -1298,7 +1297,6 @@ wake_scheduler(ErtsRunQueue *rq, int incq, int one) if (ssi->next) ssi->next->prev = ssi->prev; - res = sl->list != NULL; erts_smp_spin_unlock(&sl->lock); ERTS_THR_MEMORY_BARRIER; diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c index 545b345a71..dacf228e92 100644 --- a/erts/emulator/beam/erl_unicode.c +++ b/erts/emulator/beam/erl_unicode.c @@ -902,7 +902,6 @@ static BIF_RETTYPE build_utf8_return(Process *p,Eterm bin,int pos, static BIF_RETTYPE characters_to_utf8_trap(BIF_ALIST_3) { Eterm *real_bin; - Sint need; byte* bytes; Eterm rest_term; int left, sleft; @@ -918,7 +917,6 @@ static BIF_RETTYPE characters_to_utf8_trap(BIF_ALIST_3) ASSERT(is_binary(BIF_ARG_1)); real_bin = binary_val(BIF_ARG_1); ASSERT(*real_bin == HEADER_PROC_BIN); - need = ((ProcBin *) real_bin)->val->orig_size; pos = (int) binary_size(BIF_ARG_1); bytes = binary_bytes(BIF_ARG_1); sleft = left = allowed_iterations(BIF_P); diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c index f21a96c754..2e884a350e 100644 --- a/erts/emulator/beam/io.c +++ b/erts/emulator/beam/io.c @@ -1226,7 +1226,6 @@ void init_io(void) { int i; ErlDrvEntry** dp; - ErlDrvEntry* drv; char maxports[21]; /* enough for any 64-bit integer */ size_t maxportssize = sizeof(maxports); Uint ports_bits = ERTS_PORTS_BITS; @@ -1309,10 +1308,8 @@ void init_io(void) init_driver(&fd_driver, &fd_driver_entry, NULL); init_driver(&vanilla_driver, &vanilla_driver_entry, NULL); init_driver(&spawn_driver, &spawn_driver_entry, NULL); - for (dp = driver_tab; *dp != NULL; dp++) { - drv = *dp; + for (dp = driver_tab; *dp != NULL; dp++) erts_add_driver_entry(*dp, NULL, 1); - } erts_smp_tsd_set(driver_list_lock_status_key, NULL); erts_smp_mtx_unlock(&erts_driver_list_lock); diff --git a/erts/etc/unix/to_erl.c b/erts/etc/unix/to_erl.c index 886b301997..b7c3c956c6 100644 --- a/erts/etc/unix/to_erl.c +++ b/erts/etc/unix/to_erl.c @@ -125,7 +125,7 @@ static void usage(char *pname) int main(int argc, char **argv) { char FIFO1[FILENAME_MAX], FIFO2[FILENAME_MAX]; - int i, len, wfd, rfd, result = 0; + int i, len, wfd, rfd; fd_set readfds; char buf[BUFSIZ]; char pipename[FILENAME_MAX]; @@ -367,7 +367,6 @@ int main(int argc, char **argv) } else { fprintf(stderr, "Error in select.\n"); - result = -1; break; } } @@ -398,7 +397,6 @@ int main(int argc, char **argv) close(wfd); if (len < 0) { fprintf(stderr, "Error in reading from stdin.\n"); - result = -1; } else { fprintf(stderr, "[EOF]\n\r"); } @@ -420,7 +418,6 @@ int main(int argc, char **argv) fprintf(stderr, "Error in writing to FIFO.\n"); close(rfd); close(wfd); - result = -1; break; } STATUS("\" OK\r\n"); @@ -447,7 +444,6 @@ int main(int argc, char **argv) close(wfd); if (len < 0) { fprintf(stderr, "Error in reading from FIFO.\n"); - result = -1; } else fprintf(stderr, "[End]\n\r"); break; @@ -456,7 +452,6 @@ int main(int argc, char **argv) if ((len=version_handshake(buf,len,wfd)) < 0) { close(rfd); close(wfd); - result = -1; break; } if (protocol_ver >= 1) { @@ -475,7 +470,6 @@ int main(int argc, char **argv) fprintf(stderr, "Error in writing to terminal.\n"); close(rfd); close(wfd); - result = -1; break; } STATUS("\" OK\r\n"); -- cgit v1.2.3 From ca8dcd1911a9a382ac8dd0d511d009d5c3ae37c4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Mon, 11 Apr 2011 15:08:06 +0200 Subject: Remove documentation for non-existent init:get_args/0 init:get_args/0 was deprecated in R9C and removed in R12B. Reported-by: Eric Pailleau --- erts/doc/src/init.xml | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'erts') diff --git a/erts/doc/src/init.xml b/erts/doc/src/init.xml index 33364c709a..0e828389f6 100644 --- a/erts/doc/src/init.xml +++ b/erts/doc/src/init.xml @@ -66,19 +66,6 @@ respectively.

- - get_args() -> [Arg] - Get all non-flag command line arguments - - Arg = atom() - - -

Returns any plain command line arguments as a list of atoms - (possibly empty). It is recommended that - get_plain_arguments/1 is used instead, because of - the limited length of atoms.

- - get_argument(Flag) -> {ok, Arg} | error Get the values associated with a command line user flag -- cgit v1.2.3