Perhaps my memory failed me, or /proc/self/exe was added in android, but its path is not that of the current executable. Relying on -lib or cwd can be a workaround.
On Oct 10, 2017 12:46 AM, "Joe Bogner" <[email protected]> wrote: > Yes, it looks like it's 32-bit > > $ uname -a > Linux localhost 3.18.0-15954-g2ba05641585b #1 SMP PREEMPT Mon Oct 2 > 21:16:22 PDT 2017 i686 Android > > Thank you again. I know it's somewhat of a fringe case to support however > it seems chromebooks are becoming fairly popular in education. Proper > support would probably take a bit more work, but for being able to specify > -lib would be great. > > Alternatively, it looks like termux creates a /proc/self/exe so that could > be used too and would probably be preferred to having to specify a -lib > > $ ls -lah /proc/self/exe > lrwxrwxrwx 1 u0_a48 u0_a48 0 Oct 9 12:44 /proc/self/exe -> > /data/data/com.termux/files/usr/bin/busybox > > I know I'd be interested in running jconsole on android under termux too - > not just on chromebook. Perhaps others would be interested too. I > previously ran jconsole on android under termux to keep jhs running in the > background > > > On Mon, Oct 9, 2017 at 12:02 PM, bill lam <[email protected]> wrote: > > > Joe, I don't have any experience in chromebook. Android is not > > exact linux, the line in jeload.c > > n=readlink("/proc/self/exe",arg2,sizeof(arg2)); > > for detecting the current path of jconsole does not work under > > android because there is no such file. shared objects are usually > > installed under a system folder. The files in your strace are > > actually symlink to libj.so inside the system folder. > > > > Your suggestion of using -lib parameter seems feasible. I will > > take a look. You run the x86 jconsole. Is your chromebook > > running a 32-bit OS? > > > > Пн, 09 окт 2017, Joe Bogner написал(а): > > > bill - thanks for the reply. Excellent - yes they are there. It seems > the > > > path to libj.so is hard-coded and it's not accepting the -lib parameter > > > > > > $ ./jconsole > > > Load library /data/app/com.jsoftware.j.android-9/lib/x86/libj.so > failed. > > > > > > $ /data/data/com.termux/files/home/assets/libexec/android- > > libs/x86/jconsole > > > -lib > > > /data/data/com.termux/files/home/assets/libexec/android- > libs/x86/libj.so > > > Load library /data/app/com.jsoftware.j.android-9/lib/x86/libj.so > failed. > > > > > > > > > strace shows this: > > > > > > > > > > > > fstatat64(AT_FDCWD, "/data/data/com.jsoftware.j.android/lib/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > android/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-1/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-2/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-3/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-4/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-5/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-6/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-7/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-8/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/data/app/com.jsoftware.j. > > android-9/lib/x86/libj.so", > > > 0xfff0bff0, 0) = -1 ENOENT (No such file or directory) > > > fstatat64(AT_FDCWD, "/sdcard/Android/data", {st_mode=S_IFDIR|0771, > > > st_size=4096, ...}, 0) = 0 > > > fchmodat(AT_FDCWD, "/data/data/com.termux/files/usr/tmp", 0777) = 0 > > > > > > Which seems to show it hitting this: > > > > > > https://github.com/jsoftware/jsource/blob/ > eebfb7ba5b3149d5a1ae8dee6221da > > 076af4ea3f/jsrc/jeload.c#L141 > > > > > > > > > On Mon, Oct 9, 2017 at 10:44 AM, bill lam <[email protected]> wrote: > > > > > > > I am unable to test jandroid for some time, so I am not so sure, but > > iirc > > > > jconsole for all architectures are bundled inside APK. Not inside > libs > > > > folder but inside a tar file under the asset folder. Try decompress > > the > > > > tar file, there are 3 or 4 jconsole there. > > > > > > > > On Oct 9, 2017 10:21 PM, "Joe Bogner" <[email protected]> wrote: > > > > > > > > > I have a new HP G5 chromebook that can install apps from the Play > > Store. > > > > It > > > > > won't allow side-loading unless developer mode is turned from > > recovery > > > > mode > > > > > - which causes a warning every time the device is booted. > > > > > > > > > > I spent a few minutes trying to compile from termux and failed. > > > > > > > > > > I looked into extracting the content from the APK but noticed > > jconsole > > > > was > > > > > missing. I seem to recall early versions of the jandroid also > > included a > > > > > jconsole. It looks like the current apk has the libj.so but no > > jconsole > > > > > > > > > > It has a Intel Celeron N3060 x86_64 processor. > > > > > > > > > > Are there any relatively simple options for getting jconsole or > > jandroid > > > > to > > > > > run on this device without going to developer mode? > > > > > > > > > > Thanks for any ideas or help > > > > > > > > > > Joe > > > > > ------------------------------------------------------------ > > ---------- > > > > > For information about J forums see http://www.jsoftware.com/ > > forums.htm > > > > ------------------------------------------------------------ > ---------- > > > > For information about J forums see http://www.jsoftware.com/ > forums.htm > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > -- > > regards, > > ==================================================== > > GPG key 1024D/4434BAB3 2008-08-24 > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > > gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
