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On 6/6/16 10:11 AM, Lei Zhang wrote: |
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> Hi, |
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> |
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> I was trying to run clang (built specifically for musl) on a chroot |
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> musl system, and met some strange issue. After some investigation, it |
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> turns out the function realpath() is giving me wrong results. |
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> |
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> I can reproduce the error with the following code snippet: |
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> |
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> #include <stdio.h> |
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> #include <stdlib.h> |
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> #include <limits.h> |
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> |
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> int main(int argc, char** argv) { |
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> const char* path = "/usr/bin/clang"; // suppose this is a valid path |
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> char resolved[PATH_MAX]; |
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> char* ret = realpath(path, resolved); |
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> |
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> if (ret) |
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> printf("%s\n", ret); |
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> } |
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> |
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> If I build it against musl, it gives correct result on my host, but |
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> wrong result on chroot; If I build it against glibc (statically, since |
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> there's no glibc on chroot), it gives correct results on both |
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> environments. So it looks like musl is to blame on the chroot |
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> environment. I haven't yet confirmed if it's a bug. |
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> |
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> Any thoughts? |
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> |
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> BTW, I built my musl system with the GRS tool, using the |
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> desktop-amd64-musl-hardened profile. |
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> |
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> |
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> Regards, |
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> Lei |
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> |
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|
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open a bug report with steps to reproduce. realpath is spec-ed in |
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POSIX.1-2001, take a look at the opengroup page for it. also print out |
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the errno in case one is set. |
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|
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|
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-- |
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Anthony G. Basile, Ph.D. |
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Gentoo Linux Developer [Hardened] |
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E-Mail : blueness@g.o |
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GnuPG FP : 1FED FAD9 D82C 52A5 3BAB DC79 9384 FA6E F52D 4BBA |
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GnuPG ID : F52D4BBA |
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