mirror of
https://github.com/servalproject/serval-dna.git
synced 2024-12-29 17:38:59 +00:00
64286bd5e6
Already absorbs EINTR and EAGAIN. The monitor interface ignores this error code for reasons unexplained, and now that it uses read_nonblock() instead of read(), this preserves its behaviour.
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/*
|
|
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);
|
|
}
|