Ugh What did I do ???

[DarkWolf]

It may be more of a Linux question than HLA:

But I linked hla and hlaparse to at first /usr/bin/hla and then to /bin/hla (and similar for hlaparse) and I own and have permission for hla, hlaparse and the attendant libraries and headers.

Now my problem is that HLA won't run and either /bin or /usr/bin says I don't have permission to execute.
(also cannot execute hla directly from where I extracted it)

I keep the binaries on another drive and link to hla or hlaparse, this has worked with previous versions but not 2.6

[NervGaz]

I'm sure you've already checked this as you said you own and have permissions for the executables but still worth a double check. Do they have +x? Also depending on how hardened the linux distro you use is, world executable and world writable files can be blocked from execution as a security measure.

[DarkWolf]

$ ls -alk /bin | grep hla
lrwxrwxrwx  1 root root    1 2009-12-08 14:38 hla -> /media/data/Programming/asm/bin/hla
lrwxrwxrwx  1 root root    1 2009-12-08 14:38 hlaparse -> /media/data/Programming/asm/bin/hlaparse

$ ls -alk /media/data/Programming/asm/bin | grep hla
-rwxrwxrwx 1 sean sean  508 2009-11-07 20:28 hla
-rwxrwxrwx 1 sean sean 1789 2009-11-07 20:28 hlaparse

$ uname -a
Linux node1 2.6.24-26-generic #1 SMP Tue Dec 1 18:37:31 UTC 2009 i686 GNU/Linux

I don't how "hardened" the standard (non-server) Ubuntu kernel may be. Would you know if it is one that would be as you say (blocking world executables) ?

[DarkWolf]

Quick question

My filesytem and options in fstab for this drive ( where hla and hlaparse are originally kept and /bin links to ) are below:

Code Select Expand


ext3  users,relatime,noauto,rw,nodev,nosuid,data=journal


Don't know if this is off track but do I need to specify "exec" as an option ? (does fstab mount as noexec by default I mean ?)

[DarkWolf]

Yes it would appear that fstab is noexec by default.

This drive was originally mounted by HAL (it is a USB external hard drive) but I have been using fstab instead because of issues where the drive would not be mounted correctly after power loss. I haven't used HLA since then and didn't expect an issue. I didn't know that the defaults options of HAL (or mtab or whatever) were different than when mount reads fstab.