mksquashfs: fix abort on failure to get physical memory due to /proc missing
sysconf(_SC_PHYS_PAGES) which Mksquashfs uses to get the amount of
physical pages fails if /proc isn't mounted, returning -1. This causes
Mksquashfs to abort with a physical memory less than SQUASHFS_LOWMEM
error.
Fix this by defaulting to the minimal value of 16 Mbytes, and
allow the user to use -mem to set the value to a higher value. Also
issue a warning to this effect.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
1 file changed
