Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>There are two types of so files: shared libraries (loaded and scanned for symbols at compile time, loaded again and linked at program startup time) and modules (loaded and linked at run time). The idea of shared libraries is that your program requires a certain version of the library. This version is determined at compile time. Once the program is compiled, it should continue to work even if a new (incompatible) version of the library is installed. This means that the new version must be a different file, so old programs can still use the old library while newer (or more recently compiled) programs use the newer version.</p> <p>To properly use this system, your program must somehow make sure that the library version it needs will continue to be installed. This is one of the tasks of a distribution's packaging system. The package containing your program must have a dependency on the required version of the library package.</p> <p>However, you seem to be talking about modules. Things are different there. They do not carry such a version, because ld.so (which takes care of loading shared libraries) isn't the one loading them. Your program should be bundled with those modules, so the module versions are always compatible with the program using them. This works for most programs.</p> <p>But it doesn't work if your program allows third party modules. So they can come up with their own versioning system. This seems to be what nss has done (I'm not familiar with it, though). This means that they have defined a protocol version (currently 2), which specifies what a module should look like: which symbols need to be defined, what arguments do functions expect, these sort of things. If you create a module following version 2 of the protocol, you should name your module .so.2 (because that's their way of checking your supported version). If they create a new incompatible protocol 3, they will start looking for .so.3. Your module will no longer be found, and that's a good thing, because it will also not support the new protocol.</p>
    singulars
    1. This table or related slice is empty.
    1. POWhy do NSS modules have to end in .so.2 on Linux?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USBas Wijnen
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload