[FreeBSD] lookup process path via sysctl #5189
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compnerd
reviewed
Mar 17, 2025
| // in case for whatever reason the path is > PATH_MAX | ||
| if (sysctl_ret == -1 && errno == ENOMEM) { | ||
| // get size needed | ||
| sysctl_ret = sysctl(mib, 4, NULL, &len, NULL, 0); |
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Any reason to not do this unconditionally to compute the required length?
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Since we should almost never the case when exec path is > PATH_MAX, so we can save an extra syscall in most cases. (In fact, I'm not sure if it's even possible on generic FreeBSD, but there are many FreeBSD variants floating around...)
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Swift Testing has an implementation of this that may be useful. Given that both Swift Testing and Foundation need this information, it may make sense to add it to the stdlib. |
parkera
approved these changes
Mar 25, 2025
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@swift-ci test |
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Currently executable importing Foundation may crash when launched with certain shell as a platform specific way to get the path of the process's executable is not defined. This PR implements this missing piece to fetch the process path via
sysctl