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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qglobal.h"
#ifdef Q_OS_VXWORKS
#include "qplatformdefs.h"
#include "qfunctions_vxworks.h"
#if defined(_WRS_KERNEL)
#include <vmLib.h>
#endif
#include <selectLib.h>
#include <ioLib.h>
QT_USE_NAMESPACE
#ifdef __cplusplus
extern "C" {
#endif
// no lfind() - used by the TIF image format
void *lfind(const void* key, const void* base, size_t* elements, size_t size,
int (*compare)(const void*, const void*))
{
const char* current = (char*) base;
const char* const end = (char*) (current + (*elements) * size);
while (current != end) {
if (compare(current, key) == 0)
return (void*)current;
current += size;
}
return 0;
}
// no rand_r(), but rand()
// NOTE: this implementation is wrong for multi threaded applications,
// but there is no way to get it right on VxWorks (in kernel mode)
#if defined(_WRS_KERNEL)
int rand_r(unsigned int * /*seedp*/)
{
return rand();
}
#endif
// no usleep() support
int usleep(unsigned int usec)
{
div_t dt = div(usec, 1000000);
struct timespec ts = { dt.quot, dt.rem * 1000 };
return nanosleep(&ts, 0);
}
// gettimeofday() is declared, but is missing from the library
// It IS however defined in the Curtis-Wright X11 libraries, so
// we have to make the symbol 'weak'
#if defined(Q_CC_DIAB) && !defined(VXWORKS_DKM) && !defined(VXWORKS_RTP)
# pragma weak gettimeofday
#endif
int gettimeofday(struct timeval *tv, void /*struct timezone*/ *)
{
// the compiler will optimize this and will only use one code path
if (sizeof(struct timeval) == sizeof(struct timespec)) {
int res = clock_gettime(CLOCK_REALTIME, (struct timespec *) tv);
if (!res)
tv->tv_usec /= 1000;
return res;
} else {
struct timespec ts;
int res = clock_gettime(CLOCK_REALTIME, &ts);
if (!res) {
tv->tv_sec = ts.tv_sec;
tv->tv_usec = ts.tv_nsec / 1000;
}
return res;
}
}
// neither getpagesize() or sysconf(_SC_PAGESIZE) are available
int getpagesize()
{
#if defined(_WRS_KERNEL)
return vmPageSizeGet();
#else
return sysconf(_SC_PAGESIZE);
#endif
}
// symlinks are not supported (lstat is now just a call to stat - see qplatformdefs.h)
int symlink(const char *, const char *)
{
errno = EIO;
return -1;
}
ssize_t readlink(const char *, char *, size_t)
{
errno = EIO;
return -1;
}
// there's no truncate(), but ftruncate() support...
int truncate(const char *path, off_t length)
{
int fd = open(path, O_WRONLY, 00777);
if (fd >= 0) {
int res = ftruncate(fd, length);
int en = errno;
close(fd);
errno = en;
return res;
}
// errno is already set by open
return -1;
}
// VxWorks doesn't know about passwd & friends.
// in order to avoid patching the unix fs path everywhere
// we introduce some dummy functions that simulate a single
// 'root' user on the system.
uid_t getuid()
{
return 0;
}
gid_t getgid()
{
return 0;
}
uid_t geteuid()
{
return 0;
}
struct passwd *getpwuid(uid_t uid)
{
static struct passwd pwbuf = { "root", 0, 0, 0, 0, 0, 0 };
if (uid == 0) {
return &pwbuf;
} else {
errno = ENOENT;
return 0;
}
}
struct group *getgrgid(gid_t gid)
{
static struct group grbuf = { "root", 0, 0, 0 };
if (gid == 0) {
return &grbuf;
} else {
errno = ENOENT;
return 0;
}
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // Q_OS_VXWORKS
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