[uClinux-dev] uClinux-dist-test-20070108: empty /proc/pid/cmdline

[Thomas Chou]

Hi all,

We found the /proc/pid/cmdline , and /proc/pid/environ are empty in 
uClinux-dist-test-20070108 with nios2nommu arch and kernel 2.6. The PS 
in SASH works, because it will use /proc/pid/status if /proc/pid/cmdline 
doesn't work. However the top in busybox won't work.

Several NOMMU codes changed in linux-2.6.19 . I traced the 
fs/proc/base.c, mm/nommu.c and finally fs/exec.c . The args are not 
setup in the map as it is for MMU arch. So the read to cmdline and 
environ failed.

Thanks for any help,

Thomas Chou