static int rsock_socket0(int domain, int type, int proto) { int ret; #ifdef SOCK_CLOEXEC static int try_sock_cloexec = 1; if (try_sock_cloexec) { ret = socket(domain, type|SOCK_CLOEXEC, proto); if (ret == -1 && errno == EINVAL) { /* SOCK_CLOEXEC is available since Linux 2.6.27. Linux 2.6.18 fails with EINVAL */ ret = socket(domain, type, proto); if (ret != -1) { try_sock_cloexec = 0; } } } else { ret = socket(domain, type, proto); } #else ret = socket(domain, type, proto); #endif if (ret == -1) return -1; rb_fd_fix_cloexec(ret); return ret; }
/* fall through to fix_cloexec */ } } } else { /* cloexec_state == 0 */ ret = socket(domain, type, proto); } if (ret == -1) return -1; fix_cloexec: rb_maygvl_fd_fix_cloexec(ret); update_max_fd: rb_update_max_fd(ret); return ret; } #else /* !SOCK_CLOEXEC */ static int rsock_socket0(int domain, int type, int proto) { int ret = socket(domain, type, proto); if (ret == -1) return -1; rb_fd_fix_cloexec(ret); return ret; }
VALUE ossl_pkey_new_from_file(VALUE filename) { FILE *fp; EVP_PKEY *pkey; SafeStringValue(filename); if (!(fp = fopen(RSTRING_PTR(filename), "r"))) { ossl_raise(ePKeyError, "%s", strerror(errno)); } rb_fd_fix_cloexec(fileno(fp)); pkey = PEM_read_PrivateKey(fp, NULL, ossl_pem_passwd_cb, NULL); fclose(fp); if (!pkey) { ossl_raise(ePKeyError, NULL); } return ossl_pkey_new(pkey); }
/* try to use SOCK_NONBLOCK and SOCK_CLOEXEC */ static int my_socket(int domain) { int fd; retry: fd = socket(domain, MY_SOCK_STREAM, 0); if (fd < 0) { switch (errno) { case EMFILE: case ENFILE: #ifdef ENOBUFS case ENOBUFS: #endif /* ENOBUFS */ errno = 0; rb_gc(); fd = socket(domain, MY_SOCK_STREAM, 0); break; case EINVAL: if (MY_SOCK_STREAM != SOCK_STREAM) { MY_SOCK_STREAM = SOCK_STREAM; goto retry; } } if (fd < 0) rb_sys_fail("socket"); } if (MY_SOCK_STREAM == SOCK_STREAM) { if (fcntl(fd, F_SETFL, O_RDWR | O_NONBLOCK) < 0) close_fail(fd, "fcntl(F_SETFL, O_RDWR | O_NONBLOCK)"); rb_fd_fix_cloexec(fd); } return fd; }
/* * call-seq: * GDBM.new(filename, mode = 0666, flags = nil) * * Creates a new GDBM instance by opening a gdbm file named _filename_. * If the file does not exist, a new file with file mode _mode_ will be * created. _flags_ may be one of the following: * * *READER* - open as a reader * * *WRITER* - open as a writer * * *WRCREAT* - open as a writer; if the database does not exist, create a new one * * *NEWDB* - open as a writer; overwrite any existing databases * * The values *WRITER*, *WRCREAT* and *NEWDB* may be combined with the following * values by bitwise or: * * *SYNC* - cause all database operations to be synchronized to the disk * * *NOLOCK* - do not lock the database file * * If no _flags_ are specified, the GDBM object will try to open the database * file as a writer and will create it if it does not already exist * (cf. flag <tt>WRCREAT</tt>). If this fails (for instance, if another process * has already opened the database as a reader), it will try to open the * database file as a reader (cf. flag <tt>READER</tt>). */ static VALUE fgdbm_initialize(int argc, VALUE *argv, VALUE obj) { VALUE file, vmode, vflags; GDBM_FILE dbm; struct dbmdata *dbmp; int mode, flags = 0; if (rb_scan_args(argc, argv, "12", &file, &vmode, &vflags) == 1) { mode = 0666; /* default value */ } else if (NIL_P(vmode)) { mode = -1; /* return nil if DB does not exist */ } else { mode = NUM2INT(vmode); } if (!NIL_P(vflags)) flags = NUM2INT(vflags); SafeStringValue(file); #ifdef GDBM_CLOEXEC /* GDBM_CLOEXEC is available since gdbm 1.10. */ flags |= GDBM_CLOEXEC; #endif if (flags & RUBY_GDBM_RW_BIT) { flags &= ~RUBY_GDBM_RW_BIT; dbm = gdbm_open(RSTRING_PTR(file), MY_BLOCK_SIZE, flags, mode, MY_FATAL_FUNC); } else { dbm = 0; if (mode >= 0) dbm = gdbm_open(RSTRING_PTR(file), MY_BLOCK_SIZE, GDBM_WRCREAT|flags, mode, MY_FATAL_FUNC); if (!dbm) dbm = gdbm_open(RSTRING_PTR(file), MY_BLOCK_SIZE, GDBM_WRITER|flags, 0, MY_FATAL_FUNC); if (!dbm) dbm = gdbm_open(RSTRING_PTR(file), MY_BLOCK_SIZE, GDBM_READER|flags, 0, MY_FATAL_FUNC); } if (dbm) { rb_fd_fix_cloexec(gdbm_fdesc(dbm)); } if (!dbm) { if (mode == -1) return Qnil; if (gdbm_errno == GDBM_FILE_OPEN_ERROR || gdbm_errno == GDBM_CANT_BE_READER || gdbm_errno == GDBM_CANT_BE_WRITER) rb_sys_fail_str(file); else rb_raise(rb_eGDBMError, "%s", gdbm_strerror(gdbm_errno)); } dbmp = ALLOC(struct dbmdata); free_dbm(DATA_PTR(obj)); DATA_PTR(obj) = dbmp; dbmp->di_dbm = dbm; dbmp->di_size = -1; return obj; }
/* * call-seq: * DBM.new(filename[, mode[, flags]]) -> dbm * * Open a dbm database with the specified name, which can include a directory * path. Any file extensions needed will be supplied automatically by the dbm * library. For example, Berkeley DB appends '.db', and GNU gdbm uses two * physical files with extensions '.dir' and '.pag'. * * The mode should be an integer, as for Unix chmod. * * Flags should be one of READER, WRITER, WRCREAT or NEWDB. */ static VALUE fdbm_initialize(int argc, VALUE *argv, VALUE obj) { volatile VALUE file; VALUE vmode, vflags; DBM *dbm; struct dbmdata *dbmp; int mode, flags = 0; if (rb_scan_args(argc, argv, "12", &file, &vmode, &vflags) == 1) { mode = 0666; /* default value */ } else if (NIL_P(vmode)) { mode = -1; /* return nil if DB not exist */ } else { mode = NUM2INT(vmode); } if (!NIL_P(vflags)) flags = NUM2INT(vflags); FilePathValue(file); /* * Note: * gdbm 1.10 works with O_CLOEXEC. gdbm 1.9.1 silently ignore it. */ #ifndef O_CLOEXEC # define O_CLOEXEC 0 #endif if (flags & RUBY_DBM_RW_BIT) { flags &= ~RUBY_DBM_RW_BIT; dbm = dbm_open(RSTRING_PTR(file), flags|O_CLOEXEC, mode); } else { dbm = 0; if (mode >= 0) { dbm = dbm_open(RSTRING_PTR(file), O_RDWR|O_CREAT|O_CLOEXEC, mode); } if (!dbm) { dbm = dbm_open(RSTRING_PTR(file), O_RDWR|O_CLOEXEC, 0); } if (!dbm) { dbm = dbm_open(RSTRING_PTR(file), O_RDONLY|O_CLOEXEC, 0); } } if (dbm) { /* * History of dbm_pagfno() and dbm_dirfno() in ndbm and its compatibles. * (dbm_pagfno() and dbm_dirfno() is not standardized.) * * 1986: 4.3BSD provides ndbm. * It provides dbm_pagfno() and dbm_dirfno() as macros. * 1991: gdbm-1.5 provides them as functions. * They returns a same descriptor. * (Earlier releases may have the functions too.) * 1991: Net/2 provides Berkeley DB. * It doesn't provide dbm_pagfno() and dbm_dirfno(). * 1992: 4.4BSD Alpha provides Berkeley DB with dbm_dirfno() as a function. * dbm_pagfno() is a macro as DBM_PAGFNO_NOT_AVAILABLE. * 1997: Berkeley DB 2.0 is released by Sleepycat Software, Inc. * It defines dbm_pagfno() and dbm_dirfno() as macros. * 2011: gdbm-1.9 creates a separate dir file. * dbm_pagfno() and dbm_dirfno() returns different descriptors. */ #if defined(HAVE_DBM_PAGFNO) rb_fd_fix_cloexec(dbm_pagfno(dbm)); #endif #if defined(HAVE_DBM_DIRFNO) rb_fd_fix_cloexec(dbm_dirfno(dbm)); #endif #if defined(RUBYDBM_DB_HEADER) && defined(HAVE_TYPE_DBC) /* Disable Berkeley DB error messages such as: * DB->put: attempt to modify a read-only database */ ((DBC*)dbm)->dbp->set_errfile(((DBC*)dbm)->dbp, NULL); #endif } if (!dbm) { if (mode == -1) return Qnil; rb_sys_fail_str(file); } dbmp = ALLOC(struct dbmdata); DATA_PTR(obj) = dbmp; dbmp->di_dbm = dbm; dbmp->di_size = -1; return obj; }
/* * call-seq: * unixsocket.recv_io([klass [, mode]]) => io * * UNIXServer.open("/tmp/sock") {|serv| * UNIXSocket.open("/tmp/sock") {|c| * s = serv.accept * * c.send_io STDOUT * stdout = s.recv_io * * p STDOUT.fileno #=> 1 * p stdout.fileno #=> 7 * * stdout.puts "hello" # outputs "hello\n" to standard output. * } * } * */ static VALUE unix_recv_io(int argc, VALUE *argv, VALUE sock) { VALUE klass, mode; rb_io_t *fptr; struct iomsg_arg arg; struct iovec vec[2]; char buf[1]; int fd; #if FD_PASSING_BY_MSG_CONTROL struct { struct cmsghdr hdr; char pad[8+sizeof(int)+8]; } cmsg; #endif rb_scan_args(argc, argv, "02", &klass, &mode); if (argc == 0) klass = rb_cIO; if (argc <= 1) mode = Qnil; GetOpenFile(sock, fptr); arg.msg.msg_name = NULL; arg.msg.msg_namelen = 0; vec[0].iov_base = buf; vec[0].iov_len = sizeof(buf); arg.msg.msg_iov = vec; arg.msg.msg_iovlen = 1; #if FD_PASSING_BY_MSG_CONTROL arg.msg.msg_control = (caddr_t)&cmsg; arg.msg.msg_controllen = (socklen_t)CMSG_SPACE(sizeof(int)); arg.msg.msg_flags = 0; cmsg.hdr.cmsg_len = (socklen_t)CMSG_LEN(sizeof(int)); cmsg.hdr.cmsg_level = SOL_SOCKET; cmsg.hdr.cmsg_type = SCM_RIGHTS; fd = -1; memcpy(CMSG_DATA(&cmsg.hdr), &fd, sizeof(int)); #else arg.msg.msg_accrights = (caddr_t)&fd; arg.msg.msg_accrightslen = sizeof(fd); fd = -1; #endif arg.fd = fptr->fd; while ((int)BLOCKING_REGION_FD(recvmsg_blocking, &arg) == -1) { if (!rb_io_wait_readable(arg.fd)) rb_sys_fail("recvmsg(2)"); } #if FD_PASSING_BY_MSG_CONTROL if (arg.msg.msg_controllen < (socklen_t)sizeof(struct cmsghdr)) { rb_raise(rb_eSocket, "file descriptor was not passed (msg_controllen=%d smaller than sizeof(struct cmsghdr)=%d)", (int)arg.msg.msg_controllen, (int)sizeof(struct cmsghdr)); } if (cmsg.hdr.cmsg_level != SOL_SOCKET) { rb_raise(rb_eSocket, "file descriptor was not passed (cmsg_level=%d, %d expected)", cmsg.hdr.cmsg_level, SOL_SOCKET); } if (cmsg.hdr.cmsg_type != SCM_RIGHTS) { rb_raise(rb_eSocket, "file descriptor was not passed (cmsg_type=%d, %d expected)", cmsg.hdr.cmsg_type, SCM_RIGHTS); } if (arg.msg.msg_controllen < (socklen_t)CMSG_LEN(sizeof(int))) { rb_raise(rb_eSocket, "file descriptor was not passed (msg_controllen=%d smaller than CMSG_LEN(sizeof(int))=%d)", (int)arg.msg.msg_controllen, (int)CMSG_LEN(sizeof(int))); } if ((socklen_t)CMSG_SPACE(sizeof(int)) < arg.msg.msg_controllen) { rb_raise(rb_eSocket, "file descriptor was not passed (msg_controllen=%d bigger than CMSG_SPACE(sizeof(int))=%d)", (int)arg.msg.msg_controllen, (int)CMSG_SPACE(sizeof(int))); } if (cmsg.hdr.cmsg_len != CMSG_LEN(sizeof(int))) { rsock_discard_cmsg_resource(&arg.msg, 0); rb_raise(rb_eSocket, "file descriptor was not passed (cmsg_len=%d, %d expected)", (int)cmsg.hdr.cmsg_len, (int)CMSG_LEN(sizeof(int))); } #else if (arg.msg.msg_accrightslen != sizeof(fd)) { rb_raise(rb_eSocket, "file descriptor was not passed (accrightslen) : %d != %d", arg.msg.msg_accrightslen, (int)sizeof(fd)); } #endif #if FD_PASSING_BY_MSG_CONTROL memcpy(&fd, CMSG_DATA(&cmsg.hdr), sizeof(int)); #endif rb_fd_fix_cloexec(fd); if (klass == Qnil) return INT2FIX(fd); else { ID for_fd; int ff_argc; VALUE ff_argv[2]; CONST_ID(for_fd, "for_fd"); ff_argc = mode == Qnil ? 1 : 2; ff_argv[0] = INT2FIX(fd); ff_argv[1] = mode; return rb_funcall2(klass, for_fd, ff_argc, ff_argv); } }