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authorRich Felker <dalias@aerifal.cx>2020-03-13 16:27:10 -0400
committerRich Felker <dalias@aerifal.cx>2020-03-14 21:23:37 -0400
commit2b2c8aafce9d80f9d58652643538f4d58e82b856 (patch)
tree12fe8c1190cef866cf469777ca00fd3b7252a072 /include/search.h
parent5db475f0b987bfa7935a117aac81e14a98de34fb (diff)
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fix corrupt sysvipc timestamps on 32-bit archs with old kernels
kernel commit 4693916846269d633a3664586650dbfac2c5562f (first included in release v4.14) silently fixed a bug whereby the reserved space (which was later used for high bits of time) in IPC_STAT structures was left untouched rather than zeroed. this means that a caller that wants to read the high bits needs to pre-zero the memory. since it's not clear that these operations are permitted to modify the destination buffer on failure, use a temp buffer and copy back to the caller's buffer on success.
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