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Merge BSD implementations of QLockFilePrivate::processNameByPid()

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Until now, several solutions for the implementations of
processNameByPid() on BSD systems existed:
- one for FreeBSD using libutil through kinfo_getproc()
  using sysctl() implicitly
- one for GNU/kFreeBSD using sysctl() explicitly added in commit
  a8f4fa217d

OpenBSD and NetBSD also had different approaches in their ports patches
using kvm() and sysctl(). The code unifies this for all BSDs using
sysctl().

Change-Id: Iced9ef01e5966d8688f464f51024a7ed562e26a3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Dmitry Shachnev <mitya57@gmail.com>
This commit is contained in:
Ralf Nolden 2016-05-23 22:00:05 +02:00
parent 8fb29ed259
commit 3432742caa
2 changed files with 22 additions and 22 deletions
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1
src/corelib/io/io.pri
View File

@ -147,7 +147,6 @@ win32 {
SOURCES += io/qsettings_mac.cpp
OBJECTIVE_SOURCES += io/qurl_mac.mm
}
freebsd: LIBS_PRIVATE += -lutil # qlockfile_unix.cpp requires this
mac {
osx {
OBJECTIVE_SOURCES += io/qfilesystemwatcher_fsevents.mm

43
src/corelib/io/qlockfile_unix.cpp
View File

@ -59,14 +59,12 @@
# include <unistd.h>
# include <cstdio>
#elif defined(Q_OS_BSD4) && !defined(Q_OS_IOS)
# if !defined(Q_OS_NETBSD)
# include <sys/user.h>
# if defined(__GLIBC__) && defined(__FreeBSD_kernel__)
# endif
# include <sys/cdefs.h>
# include <sys/param.h>
# include <sys/sysctl.h>
# else
# include <libutil.h>
# endif
#endif
QT_BEGIN_NAMESPACE
@ -269,30 +267,33 @@ QString QLockFilePrivate::processNameByPid(qint64 pid)
buf[len] = 0;
return QFileInfo(QFile::decodeName(buf)).fileName();
#elif defined(Q_OS_BSD4) && !defined(Q_OS_IOS)
# if defined(__GLIBC__) && defined(__FreeBSD_kernel__)
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, pid };
size_t len = 0;
if (sysctl(mib, 4, NULL, &len, NULL, 0) < 0)
return QString();
kinfo_proc *proc = static_cast<kinfo_proc *>(malloc(len));
# if defined(Q_OS_NETBSD)
struct kinfo_proc2 kp;
int mib[6] = { CTL_KERN, KERN_PROC2, KERN_PROC_PID, (int)pid, sizeof(struct kinfo_proc2), 1 };
# elif defined(Q_OS_OPENBSD)
struct kinfo_proc kp;
int mib[6] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, (int)pid, sizeof(struct kinfo_proc), 1 };
# else
kinfo_proc *proc = kinfo_getproc(pid);
struct kinfo_proc kp;
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, (int)pid };
# endif
if (!proc)
size_t len = sizeof(kp);
u_int mib_len = sizeof(mib)/sizeof(u_int);
if (sysctl(mib, mib_len, &kp, &len, NULL, 0) < 0)
return QString();
# if defined(__GLIBC__) && defined(__FreeBSD_kernel__)
if (sysctl(mib, 4, proc, &len, NULL, 0) < 0) {
free(proc);
# if defined(Q_OS_OPENBSD) || defined(Q_OS_NETBSD)
if (kp.p_pid != pid)
return QString();
}
if (proc->ki_pid != pid) {
free(proc);
QString name = QFile::decodeName(kp.p_comm);
# else
if (kp.ki_pid != pid)
return QString();
}
QString name = QFile::decodeName(kp.ki_comm);
# endif
QString name = QFile::decodeName(proc->ki_comm);
free(proc);
return name;
#else
Q_UNUSED(pid);
return QString();