libutil: Make free_iovec() set iovlen to zero, like the manpage says
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Authored by arrowd on Wed, Sep 23, 3:38 PM.

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kib
olce

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rGe8da57256d79: libutil: Make free_iovec() zero its arguments, like the manpage claims

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arrowd created this revision.Wed, Sep 23, 3:38 PM

Herald added a reviewer: olce. · View Herald TranscriptWed, Sep 23, 3:38 PM

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Harbormaster completed remote builds in B77210: Diff 187506.Wed, Sep 23, 3:38 PM

arrowd requested review of this revision.Wed, Sep 23, 3:38 PM

Man page also claims that iov is set to NULL, but you did not do that.
Was there a reason for the change except the man page compliance?

Zero both args

Harbormaster completed remote builds in B77219: Diff 187527.Wed, Sep 23, 7:06 PM

Was there a reason for the change except the man page compliance?

Yes, the idea is to be able to reuse iov and iovlen right away after freeing previous ones:

build_iovec(&iov, &iovlen, ...);
build_iovec(&iov, &iovlen, ...);
...

free_iovec(&iov, &iovlen, ...);

build_iovec(&iov, &iovlen, ...);
build_iovec(&iov, &iovlen, ...);
...

Without this change one has to additionally put

iov = NULL;
iovlen = 0;

after free_iovec.

kib accepted this revision.Wed, Sep 23, 7:15 PM

This revision is now accepted and ready to land.Wed, Sep 23, 7:15 PM

Closed by commit rGe8da57256d79: libutil: Make free_iovec() zero its arguments, like the manpage claims (authored by arrowd). · Explain WhySat, Sep 26, 4:16 PM

This revision was automatically updated to reflect the committed changes.

arrowd added a commit: rGe8da57256d79: libutil: Make free_iovec() zero its arguments, like the manpage claims.

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mntopts.c

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libutil: Make free_iovec() set iovlen to zero, like the manpage saysClosedPublicActions