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libc_lwip: 'fcntl()' fix

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The 'O_NONBLOCK' flag has different numerical values in lwip and in the
libc, which prevented the correct setting of nonblocking socket mode.

Fixes #1699
This commit is contained in:
Christian Prochaska 2015-09-16 20:26:51 +02:00 committed by Christian Helmuth
parent de87ecfc62
commit 5309bda8b6
1 changed files with 27 additions and 17 deletions
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44
repos/libports/src/lib/libc_lwip/plugin.cc
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@ -51,8 +51,9 @@ static inline void lwip_FD_SET(int lwip_fd, lwip_fd_set *set)
FD_SET(lwip_fd, set);
}
static const long lwip_FIONBIO = FIONBIO;
static const long lwip_FIONREAD = FIONREAD;
static constexpr long lwip_FIONBIO = FIONBIO;
static constexpr long lwip_FIONREAD = FIONREAD;
static constexpr int lwip_O_NONBLOCK = O_NONBLOCK;
/* undefine lwip type names that are also defined in libc headers and have
* been renamed to lwip_*() */
@ -65,6 +66,7 @@ static const long lwip_FIONREAD = FIONREAD;
/* undefine lwip macros that are also defined in libc headers and cannot be
* renamed */
#undef AF_INET6
#undef BIG_ENDIAN
#undef BYTE_ORDER
#undef FD_CLR
@ -73,6 +75,8 @@ static const long lwip_FIONREAD = FIONREAD;
#undef FD_ZERO
#undef FIONBIO
#undef FIONREAD
#undef O_NDELAY
#undef O_NONBLOCK
#undef HOST_NOT_FOUND
#undef IOCPARM_MASK
#undef IOC_VOID
@ -110,6 +114,7 @@ static const long lwip_FIONREAD = FIONREAD;
#include <assert.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
namespace {
@ -320,15 +325,20 @@ int Plugin::fcntl(Libc::File_descriptor *sockfdo, int cmd, long val)
switch (cmd) {
case F_GETFL:
/* lwip_fcntl() supports only the 'O_NONBLOCK' flag */
result = lwip_fcntl(s, cmd, val);
if (result == lwip_O_NONBLOCK)
result = O_NONBLOCK;
break;
case F_SETFL:
/*
* lwip_fcntl() supports only the 'O_NONBLOCK' flag and only if
* no other flag is set.
*/
result = lwip_fcntl(s, cmd, val & O_NONBLOCK);
* lwip_fcntl() supports only the 'O_NONBLOCK' flag and only if
* no other flag is set.
*/
result = lwip_fcntl(s, cmd, (val & O_NONBLOCK) ? lwip_O_NONBLOCK : 0);
break;
default:
PERR("unsupported fcntl() request: %d", cmd);
PERR("libc_lwip: unsupported fcntl() request: %d", cmd);
break;
}
@ -381,16 +391,16 @@ int Plugin::getsockopt(Libc::File_descriptor *sockfdo, int level,
int Plugin::ioctl(Libc::File_descriptor *sockfdo, int request, char *argp)
{
switch (request) {
case FIONBIO:
return lwip_ioctl(get_lwip_fd(sockfdo), lwip_FIONBIO, argp);
break;
case FIONREAD:
return lwip_ioctl(get_lwip_fd(sockfdo), lwip_FIONREAD, argp);;
break;
default:
PERR("unsupported ioctl() request");
errno = ENOSYS;
return -1;
case FIONBIO:
return lwip_ioctl(get_lwip_fd(sockfdo), lwip_FIONBIO, argp);
break;
case FIONREAD:
return lwip_ioctl(get_lwip_fd(sockfdo), lwip_FIONREAD, argp);;
break;
default:
PERR("unsupported ioctl() request");
errno = ENOSYS;
return -1;
}
}