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qemu/linux-user-lseek-explicitly-cast-non-set.patch
José Ricardo Ziviani 7f46c79c5d Accepting request 914430 from home:jziviani:branches:Virtualization
- Update to v6.1: see https://wiki.qemu.org/ChangeLog/6.1
  For a full list of formely deprecated features that are removed,
  consult: https://qemu-project.gitlab.io/qemu/about/removed-features.html
  For a list of new deprecated features, consult:
  https://qemu-project.gitlab.io/qemu/about/deprecated.html
  Some noteworthy changes:
* Removed moxie CPU.
* Removed lm32 CPU.
* Removed unicore32 CPU.
* Removed 'info cpustats'.
* Added Aspeed machines: rainier-bmc, quanta-q7l1-bmc.
* Added npcm7xx machine: quanta-gbs-bmc.
* Model for Aspeed's Hash and Crypto Engine.
* SVE2 is now emulated, including bfloat16 support
* FEAT_I8MM, FEAT_TLBIOS, FEAT_TLBRANGE, FEAT_BF16, FEAT_AA32BF16, and
  FEAT_MTE3 are now emulated.
* Improved hot-unplug failures on PowerPC pseries machine.
* Implemented some POWER10 instructions in TCG.
* Added shakti_c RISC-V machine.
* Improved documentation for RISC-V machines.
* CPU models for gen16 have been added for s390x.
* New CPU model versions added with XSAVES enabled:
  Skylake-Client-v4, Skylake-Server-v5, Cascadelake-Server-v5,
  Cooperlake-v2, Icelake-Client-v3, Icelake-Server-v5, Denverton-v3,
  Snowridge-v3, Dhyana-v2
* Added ACPI based PCI hotplug support to Q35 machine. Enabled and
  used by default since pc-q35-6.1 machine type.
* Added support for the pca9546 and pca9548 I2C muxes.
* Added support for PMBus and several PMBus devices.
* Crypto subsystem:
  The preferred crypto backend driver now gnutls, with libgcrypt as the
  second choice, and nettle as third choice, with ordering driven mostly
  by performance of the ciphers.
* Misc doc improvements.
* Patches removed:
  block-nvme-Fix-VFIO_MAP_DMA-failed-No-sp.patch
  hmp-Fix-loadvm-to-resume-the-VM-on-succe.patch
  hw-block-nvme-align-with-existing-style.patch
  hw-block-nvme-consider-metadata-read-aio.patch
  hw-net-can-sja1000-fix-buff2frame_bas-an.patch
  hw-nvme-fix-missing-check-for-PMR-capabi.patch
  hw-nvme-fix-pin-based-interrupt-behavior.patch
  hw-pci-host-q35-Ignore-write-of-reserved.patch
  hw-rdma-Fix-possible-mremap-overflow-in-.patch
  hw-rx-rx-gdbsim-Do-not-accept-invalid-me.patch
  hw-usb-Do-not-build-USB-subsystem-if-not.patch
  hw-usb-host-stub-Remove-unused-header.patch
  linux-user-aarch64-Enable-hwcap-for-RND-.patch
  module-for-virtio-gpu-pre-load-module-to.patch
  monitor-qmp-fix-race-on-CHR_EVENT_CLOSED.patch
  pvrdma-Ensure-correct-input-on-ring-init.patch
  pvrdma-Fix-the-ring-init-error-flow-CVE-.patch
  qemu-config-load-modules-when-instantiat.patch
  qemu-config-parse-configuration-files-to.patch
  qemu-config-use-qemu_opts_from_qdict.patch
  runstate-Initialize-Error-to-NULL.patch
  sockets-update-SOCKET_ADDRESS_TYPE_FD-li.patch
  target-i386-Exit-tb-after-wrmsr.patch
  target-sh4-Return-error-if-CPUClass-get_.patch
  tcg-Allocate-sufficient-storage-in-temp_.patch
  tcg-arm-Fix-tcg_out_op-function-signatur.patch
  tcg-sparc-Fix-temp_allocate_frame-vs-spa.patch
  ui-Fix-memory-leak-in-qemu_xkeymap_mappi.patch
  usb-hid-avoid-dynamic-stack-allocation.patch
  usb-limit-combined-packets-to-1-MiB-CVE-.patch
  usb-mtp-avoid-dynamic-stack-allocation.patch
  usb-redir-avoid-dynamic-stack-allocation.patch
  usbredir-fix-free-call.patch
  vfio-ccw-Permit-missing-IRQs.patch
  vhost-user-blk-Check-that-num-queues-is-.patch
  vhost-user-blk-Don-t-reconnect-during-in.patch
  vhost-user-blk-Fail-gracefully-on-too-la.patch
  vhost-user-blk-Get-more-feature-flags-fr.patch
  vhost-user-blk-Make-sure-to-set-Error-on.patch
  vhost-user-gpu-abstract-vg_cleanup_mappi.patch
  vhost-user-gpu-fix-leak-in-virgl_cmd_res.patch
  vhost-user-gpu-fix-leak-in-virgl_resourc.patch
  vhost-user-gpu-fix-memory-disclosure-in-.patch
  vhost-user-gpu-fix-memory-leak-in-vg_res.patch
  vhost-user-gpu-fix-memory-leak-while-cal.patch
  vhost-user-gpu-fix-OOB-write-in-virgl_cm.patch
  vhost-user-gpu-fix-resource-leak-in-vg_r.patch
  vhost-vdpa-don-t-initialize-backend_feat.patch
  virtio-blk-Fix-rollback-path-in-virtio_b.patch
  virtio-Fail-if-iommu_platform-is-request.patch
  virtiofsd-Fix-side-effect-in-assert.patch
  vl-allow-not-specifying-size-in-m-when-u.patch
  vl-Fix-an-assert-failure-in-error-path.patch
  vl-plug-object-back-into-readconfig.patch
  vl-plumb-keyval-based-options-into-readc.patch
  x86-acpi-use-offset-instead-of-pointer-w.patch

OBS-URL: https://build.opensuse.org/request/show/914430
OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=665
2021-08-26 17:37:40 +00:00

37 lines
1.3 KiB
Diff

From: Alexander Graf <agraf@suse.de>
Date: Thu, 13 Dec 2012 14:29:22 +0100
Subject: linux-user: lseek: explicitly cast non-set offsets to signed
When doing lseek, SEEK_SET indicates that the offset is an unsigned variable.
Other seek types have parameters that can be negative.
When converting from 32bit to 64bit parameters, we need to take this into
account and enable SEEK_END and SEEK_CUR to be negative, while SEEK_SET stays
absolute positioned which we need to maintain as unsigned.
Signed-off-by: Alexander Graf <agraf@suse.de>
---
linux-user/syscall.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 54dcd38709918dd5f8aa8013ee17..4effe3b234aa7da037638b8a268e 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8537,8 +8537,13 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_ulong arg1,
return ret;
#endif
#ifdef TARGET_NR_lseek
- case TARGET_NR_lseek:
- return get_errno(lseek(arg1, arg2, arg3));
+ case TARGET_NR_lseek: {
+ off_t off = arg2;
+ if (arg3 != SEEK_SET) {
+ off = (abi_long)arg2;
+ }
+ return get_errno(lseek(arg1, off, arg3));
+ }
#endif
#if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
/* Alpha specific */