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Terminate endless loop in reading fails, to avoid flooding syslog.
This happens if the state of "Guest services" integration service
is changed from "enabled" to "disabled" at runtime in the VM
settings. In this case pread returns EIO.
Also handle an interrupted system call, and continue in this case.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Link: https://lore.kernel.org/r/20241105081437.15689-1-olaf@aepfle.de
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20241105081437.15689-1-olaf@aepfle.de>
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hv_fcopy_uio_daemon.c:436:53: warning: '%s' directive output may be truncated
writing up to 14 bytes into a region of size 10 [-Wformat-truncation=]
436 | snprintf(uio_dev_path, sizeof(uio_dev_path), "/dev/%s", uio_name);
Also added 'static' for the array 'desc[]'.
Fixes: 82b0945ce2c2 ("tools: hv: Add new fcopy application based on uio driver")
Cc: stable@vger.kernel.org # 6.10+
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240910004433.50254-1-decui@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240910004433.50254-1-decui@microsoft.com>
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Added error handling for memory allocation failures
of file_name and path_name.
Signed-off-by: Zhu Jun <zhujun2@cmss.chinamobile.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Tested-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240906091333.11419-1-zhujun2@cmss.chinamobile.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <20240906091333.11419-1-zhujun2@cmss.chinamobile.com>
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New fcopy application using uio_hv_generic driver. This application
copies file from Hyper-V host to guest VM.
A big part of this code is copied from tools/hv/hv_fcopy_daemon.c
which this new application is replacing.
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/1711788723-8593-6-git-send-email-ssengar@linux.microsoft.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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