__pmOpenLog - create a log file for diagnostics and debug output
FILE *__pmOpenLog(const char *progname, const char *logname, FILE
*oldstream, int *status)
cc ... -lpcp
__pmOpenLog reassigns the standard I/O stream oldstream to be
associated with the file logname. If it already exists, logname will
be removed and recreated if possible (to ensure correct ownership and
permissions from the caller to __pmOpenLog).
On return, the function value is the new standard I/O stream. In the
event of an error, this will be oldstream unchanged and status will be
For success, status is 1, a standard preamble is written to logname
Log for progname on hostname started date and time
and an atexit(3) handler is installed to write the postscript message
Log finished date and time
when the processes exits.
progname is only used to annotate messages.
atexit(3) and freopen(3).