Thus, there’s the /usr/etc folder containing the immutable version of configuration files, and /etc which is the mutable directory. If I modify a file in /etc and ask OSTree to compare with the new version, it will show me the differences and preserve my local modifications.
The key is the test TST_SEL_RET on line 682. It compares the RPL of the return CS selector (saved on the stack by the original CALL) against the current CPL. If RPL == CPL, the PLA returns 0x000 (continue) and LD_DESCRIPTOR finishes normally -- same-privilege return. If RPL CPL, the caller is returning to a less-privileged ring, so the PLA redirects to 0x686 (RETF_OUTER_LEV) -- the cross-privilege path that must also restore the caller's stack. If RPL
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Жители Санкт-Петербурга устроили «крысогон»17:52
* @param {number[]} nums1 - 待查询的数组（元素均为nums2的子集）