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https://issues.apache.org/jira/browse/MESOS-5121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kone updated MESOS-5121:
------------------------------
Sprint: Mesosphere Sprint 32
Story Points: 1
Summary: pivot_root is not available on PowerPC (was: pivot_root is
not available)
> pivot_root is not available on PowerPC
> --------------------------------------
>
> Key: MESOS-5121
> URL: https://issues.apache.org/jira/browse/MESOS-5121
> Project: Mesos
> Issue Type: Bug
> Reporter: Chen Zhiwei
> Assignee: Chen Zhiwei
> Fix For: 0.29.0
>
>
> When compile on ppc64le, it will through error message:
> src/linux/fs.cpp:443:2: error: #error "pivot_root is not available"
> The current code logic in src/linux/fs.cpp is:
> {code}
> #ifdef __NR_pivot_root
> int ret = ::syscall(__NR_pivot_root, newRoot.c_str(), putOld.c_str());
> #elif __x86_64__
> // A workaround for systems that have an old glib but have a new
> // kernel. The magic number '155' is the syscall number for
> // 'pivot_root' on the x86_64 architecture, see
> // arch/x86/syscalls/syscall_64.tbl
> int ret = ::syscall(155, newRoot.c_str(), putOld.c_str());
> #else
> #error "pivot_root is not available"
> #endif
> {code}
> There is no old glib version and the new kernel version, it will never run
> code in *#ifdef __NR_pivot_root* condition, and when I build on Ubuntu
> 16.04(It has the latest linux kernel and glibc), it still can't step into the
> *#ifdef __NR_pivot_root* condition.
> For powerpc case, I added another condition:
> {code}
> #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
> // A workaround for powerpc. The magic number '203' is the syscall
> // number for 'pivot_root' on the powerpc architecture, see
> // https://w3challs.com/syscalls/?arch=powerpc_64
> int ret = ::syscall(203, newRoot.c_str(), putOld.c_str());
> {code}
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