50e525e40b
This should fix cases like su setting argv[0] to _su for /bin/sh. Previously cheribsdbox (a crunched tool we use in CheriBSD to reduce the size of our minimal disk images to allow loading them onto FPGAs without waiting forever for the transfer) would complain about _su not being compiled in, but now that we also look at AT_EXECPATH it correctly invokes the sh tool. Note: we use use AT_EXECPATH instead of the KERN_PROC_PATHNAME sysctl to get the crunchgen binary name since it seems like KERN_PROC_PATHNAME just returns the last cached path for a given hardlink. When using `su`, instead of invoking /bin/csh this would invoke the last used hardlink to cheribsdbox. This caused weird test failures when running tests due to `id` being executed instead of `echo`: $ id # id is a hardlink to /bin/cheribsdbox $ su postgres -c 'echo 1' # su is also a hardlink uid=1001(postgres) gid=1001(postgres) groups=1001(postgres) Obtained from: CheriBSD Reviewed By: emaste, brooks Differential Revision: https://reviews.freebsd.org/D25998 |
||
|---|---|---|
| .. | ||
| crunched_main.c | ||
| crunchgen.1 | ||
| crunchgen.c | ||
| Makefile | ||
| Makefile.depend | ||
| mkskel.sh | ||