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67 lines
2.6 KiB
Diff
67 lines
2.6 KiB
Diff
From 20b26bdb3dd5e46b01b9a7e1ce8342074df3c89c Mon Sep 17 00:00:00 2001
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From: Thiago Macieira <thiago.macieira@intel.com>
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Date: Sat, 22 Dec 2012 08:32:12 -0800
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Subject: [PATCH] Change all shmget calls to user-only memory
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Drop the read and write permissions for group and other users in the
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system.
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Change-Id: I8fc753f09126651af3fb82df3049050f0b14e876
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(cherry-picked from Qt 5 commit 856f209fb63ae336bfb389a12d2a75fa886dc1c5)
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Reviewed-by: Richard J. Moore <rich@kde.org>
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---
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src/corelib/kernel/qsharedmemory_unix.cpp | 6 +++---
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src/corelib/kernel/qsystemsemaphore_unix.cpp | 4 ++--
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diff --git a/src/corelib/kernel/qsharedmemory_unix.cpp b/src/corelib/kernel/qsharedmemory_unix.cpp
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index 20d76e3..4cf3acf 100644
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--- a/src/corelib/kernel/qsharedmemory_unix.cpp
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+++ b/src/corelib/kernel/qsharedmemory_unix.cpp
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@@ -238,7 +238,7 @@ bool QSharedMemoryPrivate::create(int size)
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}
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// create
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- if (-1 == shmget(unix_key, size, 0666 | IPC_CREAT | IPC_EXCL)) {
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+ if (-1 == shmget(unix_key, size, 0600 | IPC_CREAT | IPC_EXCL)) {
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QString function = QLatin1String("QSharedMemory::create");
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switch (errno) {
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case EINVAL:
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@@ -293,7 +293,7 @@ bool QSharedMemoryPrivate::attach(QSharedMemory::AccessMode mode)
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{
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#ifndef QT_POSIX_IPC
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// grab the shared memory segment id
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- int id = shmget(unix_key, 0, (mode == QSharedMemory::ReadOnly ? 0444 : 0660));
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+ int id = shmget(unix_key, 0, (mode == QSharedMemory::ReadOnly ? 0400 : 0600));
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if (-1 == id) {
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setErrorString(QLatin1String("QSharedMemory::attach (shmget)"));
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return false;
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@@ -381,7 +381,7 @@ bool QSharedMemoryPrivate::detach()
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size = 0;
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// Get the number of current attachments
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- int id = shmget(unix_key, 0, 0444);
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+ int id = shmget(unix_key, 0, 0400);
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cleanHandle();
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struct shmid_ds shmid_ds;
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diff --git a/src/corelib/kernel/qsystemsemaphore_unix.cpp b/src/corelib/kernel/qsystemsemaphore_unix.cpp
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index fad9acc..e77456b 100644
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--- a/src/corelib/kernel/qsystemsemaphore_unix.cpp
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+++ b/src/corelib/kernel/qsystemsemaphore_unix.cpp
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@@ -153,10 +153,10 @@ key_t QSystemSemaphorePrivate::handle(QSystemSemaphore::AccessMode mode)
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}
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// Get semaphore
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- semaphore = semget(unix_key, 1, 0666 | IPC_CREAT | IPC_EXCL);
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+ semaphore = semget(unix_key, 1, 0600 | IPC_CREAT | IPC_EXCL);
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if (-1 == semaphore) {
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if (errno == EEXIST)
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- semaphore = semget(unix_key, 1, 0666 | IPC_CREAT);
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+ semaphore = semget(unix_key, 1, 0600 | IPC_CREAT);
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if (-1 == semaphore) {
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setErrorString(QLatin1String("QSystemSemaphore::handle"));
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cleanHandle();
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--
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1.7.1
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