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poll: don't return uninitialized

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* gnulib/lib/poll.c (poll) [WIN32_NATIVE]: Initialize "rc".
[sync from gnulib also adjusts cpp indentation to reflect nesting.]
This commit is contained in:
Jim Meyering 2009-01-08 08:55:20 +00:00
parent 7386d78e6d
commit 88053456f8
2 changed files with 33 additions and 27 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Thu Jan 8 09:48:04 CET 2009 Daniel P. Berrange <berrange@redhat.com>
poll: don't return uninitialized
* gnulib/lib/poll.c (poll) [WIN32_NATIVE]: Initialize "rc".
[sync from gnulib also adjusts cpp indentation to reflect nesting.]
Wed Jan 7 17:12:33 +0100 2009 Jim Meyering <meyering@redhat.com> Wed Jan 7 17:12:33 +0100 2009 Jim Meyering <meyering@redhat.com>
add more files pulled in via yesterday's gnulib upgrade add more files pulled in via yesterday's gnulib upgrade

54
gnulib/lib/poll.c
View File

@ -1,7 +1,7 @@
/* Emulation for poll(2) /* Emulation for poll(2)
Contributed by Paolo Bonzini. Contributed by Paolo Bonzini.
Copyright 2001, 2002, 2003, 2006, 2007, 2008 Free Software Foundation, Inc. Copyright 2001-2003, 2006-2009 Free Software Foundation, Inc.
This file is part of gnulib. This file is part of gnulib.
@ -29,35 +29,35 @@
#include <assert.h> #include <assert.h>
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
#define WIN32_NATIVE # define WIN32_NATIVE
#include <winsock2.h> # include <winsock2.h>
#include <windows.h> # include <windows.h>
#include <io.h> # include <io.h>
#include <stdio.h> # include <stdio.h>
#include <conio.h> # include <conio.h>
#else #else
#include <sys/time.h> # include <sys/time.h>
#include <sys/socket.h> # include <sys/socket.h>
#include <sys/select.h> # include <sys/select.h>
#include <unistd.h> # include <unistd.h>
#endif #endif
#ifdef HAVE_SYS_IOCTL_H #ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h> # include <sys/ioctl.h>
#endif #endif
#ifdef HAVE_SYS_FILIO_H #ifdef HAVE_SYS_FILIO_H
#include <sys/filio.h> # include <sys/filio.h>
#endif #endif
#include <time.h> #include <time.h>
#ifndef INFTIM #ifndef INFTIM
#define INFTIM (-1) # define INFTIM (-1)
#endif #endif
/* BeOS does not have MSG_PEEK. */ /* BeOS does not have MSG_PEEK. */
#ifndef MSG_PEEK #ifndef MSG_PEEK
#define MSG_PEEK 0 # define MSG_PEEK 0
#endif #endif
#ifdef WIN32_NATIVE #ifdef WIN32_NATIVE
@ -92,9 +92,9 @@ typedef enum _FILE_INFORMATION_CLASS {
typedef DWORD (WINAPI *PNtQueryInformationFile) typedef DWORD (WINAPI *PNtQueryInformationFile)
(HANDLE, IO_STATUS_BLOCK *, VOID *, ULONG, FILE_INFORMATION_CLASS); (HANDLE, IO_STATUS_BLOCK *, VOID *, ULONG, FILE_INFORMATION_CLASS);
#ifndef PIPE_BUF # ifndef PIPE_BUF
#define PIPE_BUF 512 # define PIPE_BUF 512
#endif # endif
/* Compute revents values for file handle H. */ /* Compute revents values for file handle H. */
@ -234,7 +234,7 @@ compute_revents (int fd, int sought, fd_set *rfds, fd_set *wfds, fd_set *efds)
int r; int r;
int socket_errno; int socket_errno;
#if defined __MACH__ && defined __APPLE__ # if defined __MACH__ && defined __APPLE__
/* There is a bug in Mac OS X that causes it to ignore MSG_PEEK /* There is a bug in Mac OS X that causes it to ignore MSG_PEEK
for some kinds of descriptors. Detect if this descriptor is a for some kinds of descriptors. Detect if this descriptor is a
connected socket, a server socket, or something else using a connected socket, a server socket, or something else using a
@ -243,11 +243,11 @@ compute_revents (int fd, int sought, fd_set *rfds, fd_set *wfds, fd_set *efds)
socket_errno = (r < 0) ? errno : 0; socket_errno = (r < 0) ? errno : 0;
if (r == 0 || socket_errno == ENOTSOCK) if (r == 0 || socket_errno == ENOTSOCK)
ioctl (fd, FIONREAD, &r); ioctl (fd, FIONREAD, &r);
#else # else
char data[64]; char data[64];
r = recv (fd, data, sizeof (data), MSG_PEEK); r = recv (fd, data, sizeof (data), MSG_PEEK);
socket_errno = (r < 0) ? errno : 0; socket_errno = (r < 0) ? errno : 0;
#endif # endif
if (r == 0) if (r == 0)
happened |= POLLHUP; happened |= POLLHUP;
@ -288,7 +288,7 @@ poll (pfd, nfd, timeout)
int maxfd, rc; int maxfd, rc;
nfds_t i; nfds_t i;
#ifdef _SC_OPEN_MAX # ifdef _SC_OPEN_MAX
static int sc_open_max = -1; static int sc_open_max = -1;
if (nfd < 0 if (nfd < 0
@ -299,15 +299,15 @@ poll (pfd, nfd, timeout)
errno = EINVAL; errno = EINVAL;
return -1; return -1;
} }
#else /* !_SC_OPEN_MAX */ # else /* !_SC_OPEN_MAX */
#ifdef OPEN_MAX # ifdef OPEN_MAX
if (nfd < 0 || nfd > OPEN_MAX) if (nfd < 0 || nfd > OPEN_MAX)
{ {
errno = EINVAL; errno = EINVAL;
return -1; return -1;
} }
#endif /* OPEN_MAX -- else, no check is needed */ # endif /* OPEN_MAX -- else, no check is needed */
#endif /* !_SC_OPEN_MAX */ # endif /* !_SC_OPEN_MAX */
/* EFAULT is not necessary to implement, but let's do it in the /* EFAULT is not necessary to implement, but let's do it in the
simplest case. */ simplest case. */
@ -405,7 +405,7 @@ poll (pfd, nfd, timeout)
BOOL poll_again; BOOL poll_again;
MSG msg; MSG msg;
char sockbuf[256]; char sockbuf[256];
int rc; int rc = 0;
nfds_t i; nfds_t i;
if (nfd < 0 || timeout < -1) if (nfd < 0 || timeout < -1)