The library routine doconfig(), defined in libnsl.so, interprets the configuration scripts contained in the files /etc/saf/_sysconfig, the per-system configuration file, /etc/saf/pmtag/_config, the per-port monitor configuration files, and /etc/saf/pmtag/svctag, the per-service configuration files. Its syntax is:
# include <sac.h> int doconfig (int fd, char *script, long rflag);
script is the name of the configuration script.
fd is a file descriptor that designates the stream to which stream manipulation operations are to be applied.
rflag is a bitmask that indicates the mode in which script is to be interpreted.
rflag takes two values, NORUN and NOASSIGN, which may be OR'd. 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 generates an error return. If rflag has the NORUN bit set, the run and runwait commands are considered illegal and generates error returns.
If a command in the script fails, the interpretation of the script ceases at that point and a positive integer is returned. This number indicates which line in the script failed. If a system error occurs, a value of -1 is returned.
If a script fails, the process with the environment being established should not be started.
In the following example, doconfig() is used to interpret a per-service configuration script.