#1378 SysGetservbyname(...) gives Segmentation fault

[PaulD]

Operating System: z/Linux
Distribution: SLES11 SP4
Hardware: IBM System z114
Version ooRexx v4.20 64-bit : Installed from rpm download. Source code was also downloaded and code rebuilt to get the "librxunixsys.so" module made specifically on this platform - same error.

Sample program:
/ /
h = SysGethostname();
Say "SysGethostname() : " h ;
s=0;
s = SysGetservbyname("db2c_lxszins1", "TCP", "p");
Say "SysGetservbyname('db2c_lxszins1', 'TCP', 'p') : " s ;

::REQUIRES "rxunixsys" LIBRARY

Test run:
$-3>rexx testutil.rexx
SysGethostname() : sbxlnx
Segmentation fault
$-3>

[PaulD]

REXX "/ /" header got replaced to "/ /" in supplied sample program above. Plase modify before running the sample.

[Erich]

Committed revision [r11045] to main\branches\4.2
Committed revision [r11046] to main\trunk

Needs to be tested - Paul, can you do a build from branches\4.2 and confirm?

[Anonymous]

Erich, thanks for the update. I am sorry my system is not directly connected to the internet, and so cannot do downloads. In any case I have to ask our internal folks to do downloads for us from non-vendor sites.

Can you please provide a direct link that I can pass to our folks to download the source for building. Thanks.

[Anonymous]

Erich, never mind - I have the links.

Regards. PaulD.

[Anonymous]

Providing feedback - downloaded updates and now function "SysGetservbyname(...)" works.

One observation though is that if I code the "proto" parameter in uppercase it returns nothing. Code it in lower case and it works OK. In other words;

s = SysGetservbyname("db2c_lxszins1", "tcp", "p"); <=== works.
s = SysGetservbyname("db2c_lxszins1", "TCP", "p"); <=== does not work!

In our "/etc/services" file the service entries are coded like this:
...
db2c_lxszins1 4461/tcp # DB2-Remote Relational Database Access
db2c_lxszins1 4461/udp # DB2-Remote Relational Database Access
...
As a developer I should not have to worry, or know, as to how the services file is cased.

[Erich]

downloaded updates and now function "SysGetservbyname(...)" works.

Thanks for the feedback

if I code the "proto" parameter in uppercase it returns nothing

Paul, as far as i understand, /etc/services entries are case-sensitive (although most commonly lowercase), and so are any args to SysGetservbyname(), which Rexx then simply hands over to the C function getservbyname()

[Anonymous]

Erich, just an observation; In section 6.2 of the "Unix Extensions Function Reference" PDF manual, the option choices for the "proto" paramter are printed in uppercase. That is what I followed exactly and of course that does not work in our case.

[Erich]

Updated docs to state that args name and proto are case-sensitive.
Updated examples.
Committed as revision [r11088]