Initial import from the monolithic Qt.

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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 333 insertions, 0 deletions

diff --git a/src/corelib/kernel/qcore_unix_p.h b/src/corelib/kernel/qcore_unix_p.h
new file mode 100644
index 0000000000..33df0daab4
--- /dev/null
+++ b/src/corelib/kernel/qcore_unix_p.h
@@ -0,0 +1,333 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QCORE_UNIX_P_H
+#define QCORE_UNIX_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of Qt code on Unix. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qplatformdefs.h"
+
+#ifndef Q_OS_UNIX
+# error "qcore_unix_p.h included on a non-Unix system"
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <sys/wait.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#if defined(Q_OS_VXWORKS)
+#  include <ioLib.h>
+#endif
+
+struct sockaddr;
+
+#if defined(Q_OS_LINUX) && defined(O_CLOEXEC)
+# define QT_UNIX_SUPPORTS_THREADSAFE_CLOEXEC 1
+QT_BEGIN_NAMESPACE
+namespace QtLibcSupplement {
+    inline int accept4(int, sockaddr *, QT_SOCKLEN_T *, int)
+    { errno = ENOSYS; return -1; }
+    inline int dup3(int, int, int)
+    { errno = ENOSYS; return -1; }
+    inline int pipe2(int [], int )
+    { errno = ENOSYS; return -1; }
+}
+QT_END_NAMESPACE
+using namespace QT_PREPEND_NAMESPACE(QtLibcSupplement);
+
+#else
+# define QT_UNIX_SUPPORTS_THREADSAFE_CLOEXEC 0
+#endif
+
+#define EINTR_LOOP(var, cmd)                    \
+    do {                                        \
+        var = cmd;                              \
+    } while (var == -1 && errno == EINTR)
+
+QT_BEGIN_NAMESPACE
+
+// Internal operator functions for timevals
+inline timeval &normalizedTimeval(timeval &t)
+{
+    while (t.tv_usec > 1000000l) {
+        ++t.tv_sec;
+        t.tv_usec -= 1000000l;
+    }
+    while (t.tv_usec < 0l) {
+        --t.tv_sec;
+        t.tv_usec += 1000000l;
+    }
+    return t;
+}
+inline bool operator<(const timeval &t1, const timeval &t2)
+{ return t1.tv_sec < t2.tv_sec || (t1.tv_sec == t2.tv_sec && t1.tv_usec < t2.tv_usec); }
+inline bool operator==(const timeval &t1, const timeval &t2)
+{ return t1.tv_sec == t2.tv_sec && t1.tv_usec == t2.tv_usec; }
+inline timeval &operator+=(timeval &t1, const timeval &t2)
+{
+    t1.tv_sec += t2.tv_sec;
+    t1.tv_usec += t2.tv_usec;
+    return normalizedTimeval(t1);
+}
+inline timeval operator+(const timeval &t1, const timeval &t2)
+{
+    timeval tmp;
+    tmp.tv_sec = t1.tv_sec + t2.tv_sec;
+    tmp.tv_usec = t1.tv_usec + t2.tv_usec;
+    return normalizedTimeval(tmp);
+}
+inline timeval operator-(const timeval &t1, const timeval &t2)
+{
+    timeval tmp;
+    tmp.tv_sec = t1.tv_sec - (t2.tv_sec - 1);
+    tmp.tv_usec = t1.tv_usec - (t2.tv_usec + 1000000);
+    return normalizedTimeval(tmp);
+}
+inline timeval operator*(const timeval &t1, int mul)
+{
+    timeval tmp;
+    tmp.tv_sec = t1.tv_sec * mul;
+    tmp.tv_usec = t1.tv_usec * mul;
+    return normalizedTimeval(tmp);
+}
+
+// don't call QT_OPEN or ::open
+// call qt_safe_open
+static inline int qt_safe_open(const char *pathname, int flags, mode_t mode = 0777)
+{
+#ifdef O_CLOEXEC
+    flags |= O_CLOEXEC;
+#endif
+    register int fd;
+    EINTR_LOOP(fd, QT_OPEN(pathname, flags, mode));
+
+    // unknown flags are ignored, so we have no way of verifying if
+    // O_CLOEXEC was accepted
+    if (fd != -1)
+        ::fcntl(fd, F_SETFD, FD_CLOEXEC);
+    return fd;
+}
+#undef QT_OPEN
+#define QT_OPEN         qt_safe_open
+
+#ifndef Q_OS_VXWORKS // no POSIX pipes in VxWorks
+// don't call ::pipe
+// call qt_safe_pipe
+static inline int qt_safe_pipe(int pipefd[2], int flags = 0)
+{
+#ifdef O_CLOEXEC
+    Q_ASSERT((flags & ~(O_CLOEXEC | O_NONBLOCK)) == 0);
+#else
+    Q_ASSERT((flags & ~O_NONBLOCK) == 0);
+#endif
+
+    register int ret;
+#if QT_UNIX_SUPPORTS_THREADSAFE_CLOEXEC && defined(O_CLOEXEC)
+    // use pipe2
+    flags |= O_CLOEXEC;
+    ret = ::pipe2(pipefd, flags); // pipe2 is Linux-specific and is documented not to return EINTR
+    if (ret == 0 || errno != ENOSYS)
+        return ret;
+#endif
+
+    ret = ::pipe(pipefd);
+    if (ret == -1)
+        return -1;
+
+    ::fcntl(pipefd[0], F_SETFD, FD_CLOEXEC);
+    ::fcntl(pipefd[1], F_SETFD, FD_CLOEXEC);
+
+    // set non-block too?
+    if (flags & O_NONBLOCK) {
+        ::fcntl(pipefd[0], F_SETFL, ::fcntl(pipefd[0], F_GETFL) | O_NONBLOCK);
+        ::fcntl(pipefd[1], F_SETFL, ::fcntl(pipefd[1], F_GETFL) | O_NONBLOCK);
+    }
+
+    return 0;
+}
+
+#endif // Q_OS_VXWORKS
+
+// don't call dup or fcntl(F_DUPFD)
+static inline int qt_safe_dup(int oldfd, int atleast = 0, int flags = FD_CLOEXEC)
+{
+    Q_ASSERT(flags == FD_CLOEXEC || flags == 0);
+
+    register int ret;
+#ifdef F_DUPFD_CLOEXEC
+    // use this fcntl
+    if (flags & FD_CLOEXEC) {
+        ret = ::fcntl(oldfd, F_DUPFD_CLOEXEC, atleast);
+        if (ret != -1 || errno != EINVAL)
+            return ret;
+    }
+#endif
+
+    // use F_DUPFD
+    ret = ::fcntl(oldfd, F_DUPFD, atleast);
+
+    if (flags && ret != -1)
+        ::fcntl(ret, F_SETFD, flags);
+    return ret;
+}
+
+// don't call dup2
+// call qt_safe_dup2
+static inline int qt_safe_dup2(int oldfd, int newfd, int flags = FD_CLOEXEC)
+{
+    Q_ASSERT(flags == FD_CLOEXEC || flags == 0);
+
+    register int ret;
+#if QT_UNIX_SUPPORTS_THREADSAFE_CLOEXEC && defined(O_CLOEXEC)
+    // use dup3
+    if (flags & FD_CLOEXEC) {
+        EINTR_LOOP(ret, ::dup3(oldfd, newfd, O_CLOEXEC));
+        if (ret == 0 || errno != ENOSYS)
+            return ret;
+    }
+#endif
+    EINTR_LOOP(ret, ::dup2(oldfd, newfd));
+    if (ret == -1)
+        return -1;
+
+    if (flags)
+        ::fcntl(newfd, F_SETFD, flags);
+    return 0;
+}
+
+static inline qint64 qt_safe_read(int fd, void *data, qint64 maxlen)
+{
+    qint64 ret = 0;
+    EINTR_LOOP(ret, QT_READ(fd, data, maxlen));
+    return ret;
+}
+#undef QT_READ
+#define QT_READ qt_safe_read
+
+static inline qint64 qt_safe_write(int fd, const void *data, qint64 len)
+{
+    qint64 ret = 0;
+    EINTR_LOOP(ret, QT_WRITE(fd, data, len));
+    return ret;
+}
+#undef QT_WRITE
+#define QT_WRITE qt_safe_write
+
+static inline int qt_safe_close(int fd)
+{
+    register int ret;
+    EINTR_LOOP(ret, QT_CLOSE(fd));
+    return ret;
+}
+#undef QT_CLOSE
+#define QT_CLOSE qt_safe_close
+
+// - Open C does not (yet?) implement these on Symbian OS
+// - VxWorks doesn't have processes
+#if !defined(Q_OS_SYMBIAN) && !defined(Q_OS_VXWORKS)
+static inline int qt_safe_execve(const char *filename, char *const argv[],
+                                 char *const envp[])
+{
+    register int ret;
+    EINTR_LOOP(ret, ::execve(filename, argv, envp));
+    return ret;
+}
+
+static inline int qt_safe_execv(const char *path, char *const argv[])
+{
+    register int ret;
+    EINTR_LOOP(ret, ::execv(path, argv));
+    return ret;
+}
+
+static inline int qt_safe_execvp(const char *file, char *const argv[])
+{
+    register int ret;
+    EINTR_LOOP(ret, ::execvp(file, argv));
+    return ret;
+}
+#endif
+
+#ifndef Q_OS_VXWORKS // no processes on VxWorks
+static inline pid_t qt_safe_waitpid(pid_t pid, int *status, int options)
+{
+    register int ret;
+    EINTR_LOOP(ret, ::waitpid(pid, status, options));
+    return ret;
+}
+
+#endif // Q_OS_VXWORKS
+
+#if !defined(_POSIX_MONOTONIC_CLOCK)
+#  define _POSIX_MONOTONIC_CLOCK -1
+#endif
+
+timeval qt_gettime(); // in qelapsedtimer_mac.cpp or qtimestamp_unix.cpp
+
+Q_CORE_EXPORT int qt_safe_select(int nfds, fd_set *fdread, fd_set *fdwrite, fd_set *fdexcept,
+                                 const struct timeval *tv);
+
+// according to X/OPEN we have to define semun ourselves
+// we use prefix as on some systems sem.h will have it
+struct semid_ds;
+union qt_semun {
+    int val;                    /* value for SETVAL */
+    struct semid_ds *buf;       /* buffer for IPC_STAT, IPC_SET */
+    unsigned short *array;      /* array for GETALL, SETALL */
+};
+
+QT_END_NAMESPACE
+
+#endif