/* Serval Distributed Numbering Architecture (DNA) Copyright (C) 2012 Serval Project Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include <unistd.h> #include <errno.h> #include <fcntl.h> #include <sys/uio.h> #include <sys/socket.h> #include <time.h> #include "serval_types.h" #include "conf.h" #include "net.h" #include "socket.h" #include "str.h" #include "strbuf_helpers.h" struct in_addr hton_in_addr(in_addr_t addr) { struct in_addr a; a.s_addr = htonl(addr); return a; } int _set_nonblock(int fd, struct __sourceloc __whence) { int flags; if ((flags = fcntl(fd, F_GETFL, NULL)) == -1) return WHYF_perror("set_nonblock: fcntl(%d,F_GETFL,NULL)", fd); if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) return WHYF_perror("set_nonblock: fcntl(%d,F_SETFL,0x%x|O_NONBLOCK)", fd, flags); return 0; } int _set_block(int fd, struct __sourceloc __whence) { int flags; if ((flags = fcntl(fd, F_GETFL, NULL)) == -1) return WHYF_perror("set_block: fcntl(%d,F_GETFL,NULL)", fd); if (fcntl(fd, F_SETFL, flags & ~O_NONBLOCK) == -1) return WHYF_perror("set_block: fcntl(%d,F_SETFL,0x%x&~O_NONBLOCK)", fd, flags); return 0; } ssize_t _read_nonblock(int fd, void *buf, size_t len, struct __sourceloc __whence) { ssize_t nread = read(fd, buf, len); if (nread == -1) { switch (errno) { case EINTR: case EAGAIN: case ENOTRECOVERABLE: #if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN case EWOULDBLOCK: #endif return -2; } return WHYF_perror("read_nonblock: read(%d,%p,%lu)", fd, buf, (unsigned long)len); } return nread; } ssize_t _write_all(int fd, const void *buf, size_t len, struct __sourceloc __whence) { ssize_t written = write(fd, buf, len); if (written == -1) return WHYF_perror("write_all: write(%d,%p %s,%zu)", fd, buf, alloca_toprint(30, buf, len), len); if ((size_t)written != len) return WHYF_perror("write_all: write(%d,%p %s,%zu) returned %zd", fd, buf, alloca_toprint(30, buf, len), len, (size_t)written); return written; } ssize_t _writev_all(int fd, const struct iovec *iov, int iovcnt, struct __sourceloc __whence) { size_t len = 0; int i; for (i = 0; i < iovcnt; ++i) len += iov[i].iov_len; ssize_t written = writev(fd, iov, iovcnt); if (written == -1) return WHYF_perror("writev_all: writev(%d,%s len=%zu)", fd, alloca_iovec(iov, iovcnt), len); if ((size_t)written != len) return WHYF_perror("writev_all: writev(%d,%s len=%zu) returned %zd", fd, alloca_iovec(iov, iovcnt), len, (size_t)written); return written; } ssize_t _write_nonblock(int fd, const void *buf, size_t len, struct __sourceloc __whence) { ssize_t written = write(fd, buf, len); if (written == -1) { switch (errno) { case EINTR: case EAGAIN: #if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN case EWOULDBLOCK: #endif return 0; } return WHYF_perror("write_nonblock: write(%d,%p %s,%lu)", fd, buf, alloca_toprint(30, buf, len), (unsigned long)len); return -1; } return written; } ssize_t _write_all_nonblock(int fd, const void *buf, size_t len, struct __sourceloc __whence) { ssize_t written = _write_nonblock(fd, buf, len, __whence); if (written != -1 && (size_t)written != len) return WHYF("write_all_nonblock: write(%d,%p %s,%zu) returned %zd", fd, buf, alloca_toprint(30, buf, len), len, (size_t)written); return written; } ssize_t _write_str(int fd, const char *str, struct __sourceloc __whence) { return _write_all(fd, str, strlen(str), __whence); } ssize_t _write_str_nonblock(int fd, const char *str, struct __sourceloc __whence) { return _write_all_nonblock(fd, str, strlen(str), __whence); }