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Fix fexecve tests / Improve quality of fexecve implementation #888

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@G4Vi G4Vi commented Sep 2, 2023

  • Get fexecve test running and passing on x86_64 linux again
  • Make fexecve test possibly work on other architectures
  • On Linux require /proc for fexecve_test
  • Use execve with /proc/self/fd or equivalent when executable is an APE so it's loaded by an APE loader
  • Test ARM64
  • On Linux require kernel 3.17 or higher for memfd_create
  • Fix FreeBSD compat.

… of running it

fexecve_test.c: fix zipread.com. renable tinyelf test (x86_64) only

fexecve_test.c: make memfd_create test work on all archs cosmopolitan is compiled to

(f)execve_test.c add checking for /proc/self/fd/ for fexecve

fexecve_test: get /zip/echo working again

move execve test out of fexecve_test.c

assimilate via running embedded shell script instead of parsing it

satisfy -Werror=discarded-qualifiers

fexecve: fix zipos when executable is not an APE

comment out broken tests

get most fexecve tests working again

switch memfd_create test back to vfork

add life.elf back into zipread.c, move zipread into proc

get zipos execve working again
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