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doconfig(3NSL)	     Networking	Services Library Functions	doconfig(3NSL)

NAME
       doconfig	- execute a configuration script

SYNOPSIS
       cc [ flag ... ] file ...	-lnsl [	library	... ]
       # include <sac.h>

       int doconfig(int	fildes,	char *script, long rflag);

DESCRIPTION
       doconfig()  is  a  Service Access Facility library function that	inter-
       prets the configuration scripts contained in  the  files	 </etc/saf/pm-
       tag/_config>, </etc/saf/_sysconfig>, and	</etc/saf/pmtag/svctag_, where
       pmtag specifies the tag associated with the port	 monitor,  and	svctag
       specifies  the  service	tag  associated	 with  a  given	service.   See
       pmadm(1M) and sacadm(1M).

       script is the name of the configuration script; fildes is  a  file  de-
       scriptor	that designates	the stream to which stream manipulation	opera-
       tions are to be applied;	rflag is a bitmask that	indicates the mode  in
       which  script  is  to be	interpreted. If	rflag is zero, all commands in
       the configuration script	are eligible to	be interpreted.	If  rflag  has
       the NOASSIGN bit	set, the assign	command	is considered illegal and will
       generate	an error return. If rflag has the NORUN	bit set, the  run  and
       runwait	commands  are  considered  illegal and will generate error re-
       turns.

       The configuration language in which script is written consists of a se-
       quence  of  commands, each of which is interpreted separately. The fol-
       lowing reserved keywords	are defined:  assign, push, pop, runwait,  and
       run.  The comment character is #; when a	# occurs on a line, everything
       from that point to the end of the line is ignored. Blank	lines are  not
       significant. No line in a command script	may exceed 1024	characters.

       assign variable=value

	   Used	 to  define environment	variables. variable is the name	of the
	   environment variable	and value is the value to be assigned  to  it.
	   The	value assigned must be a string	constant; no form of parameter
	   substitution	is available. value may	be quoted. The	quoting	 rules
	   are those used by the shell for defining environment	variables. as-
	   sign	will fail if space cannot be allocated for the new variable or
	   if any part of the specification is invalid.

       push module1[, module2, module3,	. . .]

	   Used	 to push STREAMS modules onto the stream designated by fildes.
	   module1 is the name of the first module to be  pushed,  module2  is
	   the	name  of the second module to be pushed, etc. The command will
	   fail	if any of the named modules cannot be pushed. If a module can-
	   not be pushed, the subsequent modules on the	same command line will
	   be ignored and modules  that	 have  already	been  pushed  will  be
	   popped.

       pop [module]

	   Used	 to  pop  STREAMS modules off the designated stream. If	pop is
	   invoked with	no arguments, the top module on	the  stream is popped.
	   If an argument is given, modules will be popped one at a time until
	   the named module is at the top of the stream. If the	 named	module
	   is  not  on the designated stream, the stream is left as it was and
	   the command fails. If module	is the special keyword ALL,  then  all
	   modules  on the stream will be popped. Note that only modules above
	   the topmost driver are affected.

       runwait command

	   The runwait command runs a command and waits	for  it	 to  complete.
	   command  is	the  pathname of the command to	be run.	The command is
	   run with /usr/bin/sh	-c  prepended to it; shell scripts may thus be
	   executed  from configuration	scripts. The runwait command will fail
	   if command cannot be	found or cannot	be executed, or	if command ex-
	   its with a non-zero status.

       run command

	   The	run  command  is  identical to runwait except that it does not
	   wait	for command to complete. command is the	pathname of  the  com-
	   mand	 to  be	run. run will not fail unless it is unable to create a
	   child process to execute the	command.

       Although	they are syntactically indistinguishable, some of the commands
       available  to run and runwait are interpreter built-in commands.	Inter-
       preter built-ins	are used when it is necessary to alter the state of  a
       process	within the context of that process. The	doconfig() interpreter
       built-in	commands are similar to	the shell special commands  and,  like
       these, they do not spawn	another	process	for execution. See sh(1).  The
       built-in	commands are:

	      cd
	      ulimit
	      umask

RETURN VALUES
       doconfig() returns 0 if the script was interpreted successfully.	 If  a
       command in the script fails, the	interpretation of the script ceases at
       that point and a	positive number	is  returned;  this  number  indicates
       which  line  in the script failed. If a system error occurs, a value of
       -1 is returned. When a script fails, the	process	whose environment  was
       being established should	not be started.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE	TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       sh(1), pmadm(1M), sacadm(1M), attributes(5)

NOTES
       This  interface is unsafe in multithreaded applications.	 Unsafe	inter-
       faces should be called only from	the main thread.

SunOS 5.10			  30 Dec 1996			doconfig(3NSL)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO | NOTES

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