EH: CS-791 SGE_ROOT should be available in prolog / epilog configuration in any case

Author: jgabler-hpc

Diff for: doc/markdown/man/man5/sge_conf.md

@@ -111,6 +111,12 @@ The default for *prolog* is the special value NONE, which prevents from executio
 The following special variables expanded at runtime can be used (besides any other strings which have to be 
 interpreted by the procedure) to constitute a command line:
 
+* \$sge_root
+  The product root directory.
+
+* \$sge_cell
+  The name of the cell directory.
+
 * \$host  
   The name of the host on which the prolog or epilog procedures are started.
 

Diff for: doc/markdown/man/man5/sge_pe.md

@@ -68,6 +68,12 @@ being the job's identification number. Likewise, the standard error output is re
 The following special variables being expanded at runtime can be used (besides any other strings which have to 
 be interpreted by the start and stop procedures) to constitute a command line:
 
+* $sge_root
+  The product root directory.
+
+* $sge_cell
+  The name of the cell directory.
+
 * $pe_hostfile  
   The pathname of a file containing a detailed description of the layout of the parallel environment to be setup by 
   the start-up procedure. Each line of the file refers to a host on which parallel processes are to be run. The first 

Diff for: doc/markdown/man/man5/sge_queue_conf.md

@@ -325,6 +325,12 @@ with its arguments is started by xxQS_NAMExx to perform the appropriate action.
 are expanded at runtime and can be used (besides any other strings which have to be interpreted by the procedures) 
 to constitute a command line:
 
+* $sge_root
+  The product root directory.
+
+* $sge_cell
+  The name of the cell directory.
+
 * $host  
   The name of the host on which the procedure is started.
 

Diff for: source/daemons/execd/exec_job.cc

@@ -1021,6 +1021,11 @@ int sge_exec_job(lListElem *jep, lListElem *jatep, lListElem *petep, char *err_s
       DRETURN(-2);
    }
 
+   // add sge_root and sge_cell to the config file
+   // they can be used as special variables in prolog/epilog/pe/ckpt configuration
+   fprintf(fp, "sge_root=%s\n", sge_root);
+   fprintf(fp, "sge_cell=%s\n", default_cell);
+
 #ifdef COMPILE_DC
 
 #  if defined(SOLARIS) || defined(LINUX) || defined(FREEBSD) || defined(DARWIN)

Diff for: source/libs/uti/config_file.cc

@@ -70,6 +70,8 @@ static config_entry *config_list = nullptr;
 
 /* these variables may get used to replace variables in pe_start */
 const char *pe_variables[] = {
+        "sge_root",
+        "sge_cell",
         "pe_hostfile",
         "host",
         "job_owner",
@@ -100,6 +102,8 @@ const char *pe_variables[] = {
 
 /* these variables may get used to replace variables in prolog/epilog */
 const char *prolog_epilog_variables[] = {
+        "sge_root",
+        "sge_cell",
         "host",
         "job_owner",
         "job_id",
@@ -136,6 +140,8 @@ const char *pe_alloc_rule_variables[] = {
 };
 
 const char *ckpt_variables[] = {
+        "sge_root",
+        "sge_cell",
         "host",
         "job_owner",
         "job_id",
@@ -148,6 +154,8 @@ const char *ckpt_variables[] = {
 };
 
 const char *ctrl_method_variables[] = {
+        "sge_root",
+        "sge_cell",
         "host",
         "job_owner",
         "job_id",