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04cbb443da170f390093d7bc40015a8d451648a1
org-hyperion-cules/script.c
Fish (David B. Trout) 04cbb443da Fix MSVC build error C4702: unreachable code
2015-01-25 16:38:56 -08:00

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/* SCRIPT.C (c) Copyright Roger Bowler, 1999-2012 */
/* (c) Copyright Jan Jaeger, 1999-2012 */
/* (c) Copyright Ivan Warren, 2003-2012 */
/* (c) Copyright "Fish" (David B. Trout), 2002-2012 */
/* (c) Copyright TurboHercules, SAS 2010-2011 */
/* ESA/390 Configuration and Script parser */
/* */
/* Released under "The Q Public License Version 1" */
/* (http://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
/* This module contains all hercules specific config and command */
/* scripting routines. */
/* All hercules specific language contructs, keywords and semantics */
/* are defined in this modeule */
#include "hstdinc.h"
#if !defined(_SCRIPT_C_)
#define _SCRIPT_C_
#endif
#if !defined(_HENGINE_DLL_)
#define _HENGINE_DLL_
#endif
#include "hercules.h"
#include "devtype.h"
#include "opcode.h"
#include "hostinfo.h"
#if !defined(_GEN_ARCH)
#if defined(_ARCHMODE3)
#define _GEN_ARCH _ARCHMODE3
#include "script.c"
#undef _GEN_ARCH
#endif
#if defined(_ARCHMODE2)
#define _GEN_ARCH _ARCHMODE2
#include "script.c"
#undef _GEN_ARCH
#endif
/*-------------------------------------------------------------------*/
/* Subroutine to parse an argument string. The string that is passed */
/* is modified in-place by inserting null characters at the end of */
/* each argument found. The returned array of argument pointers */
/* then points to each argument found in the original string. Any */
/* argument (except the first one) that begins with '#' character */
/* is considered a line comment and causes early termination of */
/* parsing and is not included in the argument count. If the first */
/* argument begins with a '#' character, it is treated as a command */
/* and parsing continues as normal, thus allowing comments to be */
/* processed as commands. Any argument beginning with a double quote */
/* or single apostrophe causes all characters up to the next quote */
/* or apostrophe to be included as part of that argument. The quotes */
/* and/or apostrophes themselves are not considered to be a part of */
/* the argument itself and are replaced with nulls. */
/* p Points to string to be parsed. */
/* maxargc Maximum allowable number of arguments. (Prevents */
/* overflowing the pargv array) */
/* pargv Pointer to buffer for argument pointer array. */
/* pargc Pointer to number of arguments integer result. */
/* Returns number of arguments found. (same value as at *pargc) */
/*-------------------------------------------------------------------*/
DLL_EXPORT int parse_args (char* p, int maxargc, char** pargv, int* pargc)
{
*pargc = 0;
*pargv = NULL;
while (*p && *pargc < maxargc)
{
while (*p && isspace(*p)) p++; if (!*p) break; // find start of arg
if (*p == '#' && *pargc) break; // stop when line comment reached
*pargv = p; ++*pargc; // count new arg
while (*p && !isspace(*p) && *p != '\"' && *p != '\'') p++; if (!*p) break; // find end of arg
if (*p == '\"' || *p == '\'')
{
char delim = *p;
if (p == *pargv) *pargv = p+1;
do {} while (*++p && *p != delim);
if (!*p) break; // find end of quoted string
}
*p++ = 0; // mark end of arg
pargv++; // next arg ptr
}
return *pargc;
}
/*-------------------------------------------------------------------*/
/* Subroutine to read a statement from the configuration file */
/* addargc Contains number of arguments */
/* addargv An array of pointers to each argument */
/* Returns 0 if successful, -1 if end of file */
/*-------------------------------------------------------------------*/
static int read_config (char *fname, FILE *fp, char *buf, unsigned int buflen, int *inc_stmtnum)
{
int c; /* Character work area */
unsigned int stmtlen; /* Statement length */
int lstarted; /* Indicate if non-whitespace*/
/* has been seen yet in line */
#if defined(ENABLE_SYSTEM_SYMBOLS)
char *buf1; /* Pointer to resolved buffer*/
#endif
while (1)
{
/* Increment statement number */
(*inc_stmtnum)++;
/* Read next statement from configuration file */
for (stmtlen = 0, lstarted = 0; ;)
{
if (stmtlen == 0)
memset(buf, 0, buflen); // clear work area
/* Read character from configuration file */
c = fgetc(fp);
/* Check for I/O error */
if (ferror(fp))
{
WRMSG(HHC01432, "S", *inc_stmtnum, fname, "fgetc()", strerror(errno));
return -1;
}
/* Check for end of file */
if (stmtlen == 0 && (c == EOF || c == '\x1A'))
return -1;
/* Check for end of line */
if (c == '\n' || c == EOF || c == '\x1A')
break;
/* Ignore nulls and carriage returns */
if (c == '\0' || c == '\r') continue;
/* Check if it is a white space and no other character yet */
if(!lstarted && isspace(c)) continue;
lstarted=1;
/* Check that statement does not overflow buffer */
if (stmtlen >= buflen - 1)
{
WRMSG(HHC01433, "S", *inc_stmtnum, fname);
return -1;
}
/* Append character to buffer */
buf[stmtlen++] = c;
} /* end for(stmtlen) */
/* Remove trailing blanks and tabs */
while (stmtlen > 0 && (buf[stmtlen-1] == SPACE
|| buf[stmtlen-1] == '\t')) stmtlen--;
buf[stmtlen] = '\0';
/* Loud comments should always be logged */
if (stmtlen != 0 && buf[0] == '*')
WRMSG( HHC01603, "I", buf ); // "%s"
/* Ignore null statements and comments */
if (stmtlen == 0 || buf[0] == '*' || buf[0] == '#')
continue;
#if defined(ENABLE_SYSTEM_SYMBOLS)
#if defined(ENABLE_BUILTIN_SYMBOLS)
set_symbol("CUU","$(CUU)");
set_symbol("CCUU","$(CCUU)");
set_symbol("DEVN","$(DEVN)");
#endif
/* Perform variable substitution */
buf1=resolve_symbol_string(buf);
if(buf1!=NULL)
{
if(strlen(buf1)>=buflen)
{
WRMSG(HHC01433, "S", *inc_stmtnum, fname);
free(buf1);
return -1;
}
strlcpy(buf,buf1,buflen);
free(buf1);
}
#endif /* #if defined(ENABLE_SYSTEM_SYMBOLS) */
/* Special handling for 'pause' statement */
if (strncasecmp( buf, "pause ", 6 ) == 0)
{
double pauseamt = 0.0; /* (secs to pause) */
struct timespec ts = {0,0}; /* (nanosleep arg) */
U64 i, nsecs = 0; /* (nanoseconds) */
pauseamt = atof( &buf[6] );
if (pauseamt < 0.0 || pauseamt > 999.0)
{
// "Config file[%d] %s: error processing statement: %s"
WRMSG( HHC01441, "W", *inc_stmtnum, fname, "syntax error; statement ignored" );
continue; /* (go on to next statement) */
}
/* We sleep in 1/4 second increments at first */
nsecs = (U64) (pauseamt * 1000000000.0);
ts.tv_nsec = 250000000; /* 1/4th of a second */
ts.tv_sec = 0;
if (MLVL( VERBOSE ))
{
// "Config file[%d] %s: processing paused for %d milliseconds..."
WRMSG( HHC02318, "I", *inc_stmtnum, fname, (int)(pauseamt * 1000.0) );
}
/* Sleep for 1/4 second increments */
for (i = nsecs; i >= (U64) ts.tv_nsec; i -= (U64) ts.tv_nsec)
nanosleep( &ts, NULL );
/* Sleep for remainder of time period */
if (i)
{
ts.tv_nsec = (long) i;
nanosleep( &ts, NULL );
}
if (MLVL( VERBOSE ))
{
// "Config file[%d] %s: processing resumed..."
WRMSG( HHC02319, "I", *inc_stmtnum, fname );
}
continue; /* (go on to next statement) */
}
break;
} /* end while */
return 0;
} /* end function read_config */
/*-------------------------------------------------------------------*/
/* Function to build system configuration */
/*-------------------------------------------------------------------*/
DLL_EXPORT int process_config (char *cfg_name)
{
#ifdef EXTERNALGUI
char buf[1024]; /* Config statement buffer */
#else /*!EXTERNALGUI*/
char buf[256]; /* Config statement buffer */
#endif /*EXTERNALGUI*/
int addargc; /* Number of additional args */
char *addargv[MAX_ARGS]; /* Additional argument array */
#define MAX_INC_LEVEL 8 /* Maximum nest level */
static int inc_stmtnum[MAX_INC_LEVEL]; /* statement number */
int rc; /* Return code */
int i; /* Array subscript */
int scount; /* Statement counter */
int inc_level; /* Current nesting level */
FILE *inc_fp[MAX_INC_LEVEL]; /* Configuration file pointer*/
BYTE c; /* Work area for sscanf */
#if defined(ENABLE_CONFIG_INCLUDE)
int inc_ignore_errors = 0; /* 1==ignore include errors */
char pathname[MAX_PATH]; /* file path in host format */
#endif
char fname[MAX_PATH]; /* normalized filename */
int errorcount = 0;
#if defined(ENABLE_OBJECT_REXX) || defined(ENABLE_REGINA_REXX)
int shell_flg = FALSE; /* indicate it is has a shell
path specified */
#endif
/* Open the base configuration file */
hostpath(fname, cfg_name, sizeof(fname));
inc_level = 0;
#if defined(_MSVC_)
fopen_s( &inc_fp[inc_level], fname, "r");
#else
inc_fp[inc_level] = fopen (fname, "r");
#endif
if (inc_fp[inc_level] == NULL)
{
WRMSG(HHC01432, "S", 1, fname, "fopen()", strerror(errno));
fflush(stderr);
fflush(stdout);
usleep(100000);
return -1;
}
inc_stmtnum[inc_level] = 0;
/*****************************************************************/
/* Parse configuration file system parameter statements... */
/*****************************************************************/
for (scount = 0; ; scount++)
{
/* Read next record from the configuration file */
while (inc_level >= 0 && read_config (fname, inc_fp[inc_level], buf, sizeof(buf), &inc_stmtnum[inc_level]))
{
fclose (inc_fp[inc_level--]);
}
if (inc_level < 0)
{
return 0;
}
/* Parse the statement just read */
parse_args (buf, MAX_ARGS, addargv, &addargc);
#if defined(ENABLE_OBJECT_REXX) || defined(ENABLE_REGINA_REXX)
// Test for REXX script. If first card starts with "/*" or
// first card has shell path specification "#!" and second card
// "/*", then we will process as a REXX script.
if ( inc_level == 0 && inc_stmtnum[0] < 3 )
{
/* Ignore #! (shell path) card if found */
if ( shell_flg == FALSE &&
inc_stmtnum[0] == 1 &&
!strncmp( addargv[0], "#!", 2 ) )
{
shell_flg = TRUE;
}
/* Check for REXX exec being executed */
if ( !strncmp( addargv[0], "/*", 2 ) &&
( ( shell_flg == FALSE && inc_stmtnum[0] == 1 ) ||
( shell_flg == TRUE && inc_stmtnum[0] == 2 )
)
)
{
char *rcmd[2] = { "exec", NULL };
rcmd[1] = fname;
errorcount = exec_cmd( 2, rcmd, NULL );
goto rexx_done;
}
}
#endif /* defined(ENABLE_OBJECT_REXX) || defined(ENABLE_REGINA_REXX) */
#if defined( ENABLE_CONFIG_INCLUDE )
if (strcasecmp (addargv[0], "ignore") == 0)
{
if (strcasecmp (addargv[1], "include_errors") == 0)
{
WRMSG(HHC01435, "I", fname);
inc_ignore_errors = 1 ;
}
continue ;
}
/* Check for include statement */
if (strcasecmp (addargv[0], "include") == 0)
{
if (++inc_level >= MAX_INC_LEVEL)
{
WRMSG(HHC01436, "S", inc_stmtnum[inc_level-1], fname, MAX_INC_LEVEL);
return -1;
}
hostpath(pathname, addargv[1], sizeof(pathname));
WRMSG(HHC01437, "I", inc_stmtnum[inc_level-1], fname, pathname);
#if defined(_MSVC_)
fopen_s ( &inc_fp[inc_level], pathname, "r");
#else
inc_fp[inc_level] = fopen (pathname, "r");
#endif
if (inc_fp[inc_level] == NULL)
{
inc_level--;
if ( inc_ignore_errors == 1 )
{
WRMSG(HHC01438, "W", fname, addargv[1], strerror(errno));
continue ;
}
else
{
WRMSG(HHC01439, "S", fname, addargv[1], strerror(errno));
return -1;
}
}
inc_stmtnum[inc_level] = 0;
continue;
}
#endif /* #if defined( ENABLE_CONFIG_INCLUDE ) */
if ( ( strlen(addargv[0]) <= 4 &&
#if defined( _MSVC_)
sscanf_s(addargv[0], "%x%c", &rc, &c, sizeof(BYTE)) == 1)
#else
sscanf(addargv[0], "%x%c", &rc, &c) == 1 )
#endif
||
/* Also, if addargv[0] contains ':' (added by Harold Grovesteen jan2008) */
/* Added because device statements may now contain channel set or LCSS id */
strchr( addargv[0], ':' )
/* ISW */
/* Also, if addargv[0] contains '-', ',' or '.' */
/* Added because device statements may now be a compound device number specification */
||
strchr( addargv[0],'-' )
||
strchr( addargv[0],'.' )
||
strchr( addargv[0],',' )
) /* end if */
{
#define MAX_CMD_LEN 32768
int attargc;
char **attargv;
char attcmdline[MAX_CMD_LEN];
if ( addargv[0] == NULL || addargv[1] == NULL )
{
WRMSG(HHC01448, "S", inc_stmtnum[inc_level], fname);
return -1;
}
/* Build attach command to attach device(s) */
attargc = addargc + 1;
attargv = malloc( attargc * sizeof(char *) );
attargv[0] = "attach";
strlcpy( attcmdline, attargv[0], sizeof(attcmdline) );
for ( i = 1; i < attargc; i++ )
{
attargv[i] = addargv[i - 1];
strlcat( attcmdline, " ", sizeof(attcmdline) );
strlcat( attcmdline, attargv[i], sizeof(attcmdline) );
}
rc = CallHercCmd( attargc, attargv, attcmdline );
free( attargv );
if ( rc == -2 )
{
WRMSG(HHC01443, "S", inc_stmtnum[inc_level], fname, addargv[0], "device number specification");
return -1;
}
continue;
}
/* Check for old-style CPU statement */
if (scount == 0 && addargc == 7 && strlen(addargv[0]) == 6
#if defined( _MSVC_)
&& sscanf_s(addargv[0], "%x%c", &rc, &c, sizeof(BYTE)) == 1)
#else
&& sscanf(addargv[0], "%x%c", &rc, &c) == 1)
#endif
{
char *exec_cpuserial[2] = { "cpuserial", NULL };
char *exec_cpumodel[2] = { "cpumodel", NULL };
char *exec_mainsize[2] = { "mainsize", NULL };
char *exec_xpndsize[2] = { "xpndsize", NULL };
char *exec_cnslport[2] = { "cnslport", NULL };
char *exec_numcpu[2] = { "numcpu", NULL };
char *exec_loadparm[2] = { "loadparm", NULL };
exec_cpuserial[1] = addargv[0];
exec_cpumodel[1] = addargv[1];
exec_mainsize[1] = addargv[2];
exec_xpndsize[1] = addargv[3];
exec_cnslport[1] = addargv[4];
exec_numcpu[1] = addargv[5];
exec_loadparm[1] = addargv[6];
if(CallHercCmd (2, exec_cpuserial, NULL) < 0 )
errorcount++;
if(CallHercCmd (2, exec_cpumodel, NULL) < 0 )
errorcount++;
if(CallHercCmd (2, exec_mainsize, NULL) < 0 )
errorcount++;
if(CallHercCmd (2, exec_xpndsize, NULL) < 0 )
errorcount++;
if(CallHercCmd (2, exec_cnslport, NULL) < 0 )
errorcount++;
if(CallHercCmd (2, exec_numcpu, NULL) < 0 )
errorcount++;
if(CallHercCmd (2, exec_loadparm, NULL) < 0 )
errorcount++;
if(errorcount)
WRMSG(HHC01441, "E", inc_stmtnum[inc_level], fname, addargv[0]);
}
else
{
char addcmdline[MAX_CMD_LEN];
int i;
int rc;
strlcpy( addcmdline, addargv[0], sizeof(addcmdline) );
for( i = 1; i < addargc; i++ )
{
strlcat(addcmdline, " ", sizeof(addcmdline));
strlcat(addcmdline, addargv[i], sizeof(addcmdline));
}
rc = CallHercCmd (addargc, addargv, addcmdline);
/* rc < 0 abort, rc == 0 OK, rc > warnings */
if( rc < 0 )
{
errorcount++;
WRMSG(HHC01441, "E", inc_stmtnum[inc_level], fname, addcmdline);
}
} /* end else (not old-style CPU statement) */
} /* end for(scount) (end of configuration file statement loop) */
#if defined(ENABLE_OBJECT_REXX) || defined(ENABLE_REGINA_REXX)
rexx_done:
#if !defined( ENABLE_CONFIG_INCLUDE )
/* close configuration file */
rc = fclose(inc_fp[inc_level]);
#endif
if(!sysblk.msglvl)
sysblk.msglvl = DEFAULT_MLVL;
return errorcount;
#endif // defined(ENABLE_OBJECT_REXX) || defined(ENABLE_REGINA_REXX)
} /* end function process_config */
/*-------------------------------------------------------------------*/
/* Script processing control */
/*-------------------------------------------------------------------*/
struct SCRCTL { /* Script control structure */
LIST_ENTRY link; /* Just a link in the chain */
TID scr_tid; /* Script thread id. If zero
then entry is not active. */
int scr_id; /* Script identification no. */
char* scr_name; /* Name of script being run */
char* scr_cmdline; /* Original command-line */
int scr_isrcfile; /* Script is startup ".RC" */
int scr_recursion; /* Current recursion level */
int scr_flags; /* Script processing flags */
#define SCR_CANCEL 0x80 /* Cancel script requested */
#define SCR_ABORT 0x40 /* Script abort requested */
#define SCR_CANCELED 0x20 /* Script has been canceled */
#define SCR_ABORTED 0x10 /* Script has been aborted */
};
typedef struct SCRCTL SCRCTL; /* typedef is easier to use */
static LIST_ENTRY scrlist = {0,0}; /* Script list anchor entry */
static int scrid = 0; /* Script identification no. */
#define SCRTHREADNAME "Script Thread" /* Name of processing thread */
//#define LOGSCRTHREADBEGEND // TODO: make a decision about this
/*-------------------------------------------------------------------*/
/* Create new SCRCTL entry - lock must *NOT* be held (internal) */
/*-------------------------------------------------------------------*/
SCRCTL* NewSCRCTL( TID tid, const char* script_name, int isrcfile )
{
SCRCTL* pCtl;
char* scr_name;
ASSERT( script_name );
/* Create a new entry */
if (0
|| !(pCtl = malloc (sizeof( SCRCTL )))
|| !(scr_name = strdup( script_name ))
)
{
// "Out of memory"
WRMSG( HHC00152, "E" );
if (pCtl) free( pCtl );
return NULL;
}
/* Initialize the new entry */
memset( pCtl, 0, sizeof( SCRCTL ));
InitializeListLink( &pCtl->link );
pCtl->scr_tid = tid; /* (may be zero) */
pCtl->scr_name = scr_name;
pCtl->scr_isrcfile = isrcfile;
/* Add the new entry to our list */
obtain_lock( &sysblk.scrlock );
pCtl->scr_id = ++scrid;
if (!scrlist.Flink)
InitializeListHead( &scrlist );
InsertListTail( &scrlist, &pCtl->link );
release_lock( &sysblk.scrlock );
return pCtl;
}
/*-------------------------------------------------------------------*/
/* Update SCRCTL entry - lock must *NOT* be held (internal) */
/*-------------------------------------------------------------------*/
void UpdSCRCTL( SCRCTL* pCtl, const char* script_name )
{
obtain_lock( &sysblk.scrlock );
if (pCtl->scr_name) free( pCtl->scr_name );
pCtl->scr_name = strdup( script_name );
release_lock( &sysblk.scrlock );
}
/*-------------------------------------------------------------------*/
/* Free SCRCTL entry - lock must *NOT* be held (internal) */
/*-------------------------------------------------------------------*/
void FreeSCRCTL( SCRCTL* pCtl )
{
ASSERT( pCtl ); /* (sanity check) */
/* Remove ENTRY from processing list */
obtain_lock( &sysblk.scrlock );
RemoveListEntry( &pCtl->link );
release_lock( &sysblk.scrlock );
/* Free list entry and return */
if (pCtl->scr_name)
free( pCtl->scr_name );
if (pCtl->scr_cmdline)
free( pCtl->scr_cmdline );
free( pCtl );
}
/*-------------------------------------------------------------------*/
/* Find SCRCTL entry - lock must *NOT* be held (internal, external) */
/*-------------------------------------------------------------------*/
void* FindSCRCTL( TID tid )
{
/* PROGRAMMING NOTE: the return type is "void*" so external
callers are able to query whether any scripts are running
without requiring them to known what our internal SCRCTL
struct looks like.
*/
LIST_ENTRY* pLink = NULL;
SCRCTL* pCtl = NULL;
ASSERT( tid ); /* (sanity check) */
obtain_lock( &sysblk.scrlock );
/* Perform first-time initialization if needed */
if (!scrlist.Flink)
InitializeListHead( &scrlist );
/* Search the list to locate the desired entry */
for (pLink = scrlist.Flink; pLink != &scrlist; pLink = pLink->Flink)
{
pCtl = CONTAINING_RECORD( pLink, SCRCTL, link );
if (pCtl->scr_tid && equal_threads( pCtl->scr_tid, tid ))
{
release_lock( &sysblk.scrlock );
return pCtl; /* (found) */
}
}
release_lock( &sysblk.scrlock );
return NULL; /* (not found) */
}
/*-------------------------------------------------------------------*/
/* List script ids - lock must *NOT* be held (internal, external) */
/*-------------------------------------------------------------------*/
void ListScriptsIds()
{
LIST_ENTRY* pLink = NULL;
SCRCTL* pCtl = NULL;
obtain_lock( &sysblk.scrlock );
/* Perform first-time initialization if needed */
if (!scrlist.Flink)
InitializeListHead( &scrlist );
/* Check for empty list */
if (IsListEmpty( &scrlist ))
{
// "No scripts currently running"
WRMSG( HHC02314, "I" );
release_lock( &sysblk.scrlock );
return;
}
/* Display all entries in list */
for (pLink = scrlist.Flink; pLink != &scrlist; pLink = pLink->Flink)
{
pCtl = CONTAINING_RECORD( pLink, SCRCTL, link );
if (!pCtl->scr_tid) continue; /* (inactive) */
// "Script id:%d, tid:"TIDPAT", level:%d, name:%s"
WRMSG( HHC02315, "I", pCtl->scr_id,
pCtl->scr_tid, pCtl->scr_recursion,
pCtl->scr_name ? pCtl->scr_name : "" );
}
release_lock( &sysblk.scrlock );
}
/*-------------------------------------------------------------------*/
/* cscript command - cancel a running script(s) (external) */
/*-------------------------------------------------------------------*/
int cscript_cmd( int argc, char *argv[], char *cmdline )
{
int first = FALSE; /* Cancel first script found */
int all = FALSE; /* Cancel all running scripts */
int scrid = 0; /* Cancel this specific script */
int count = 0; /* Counts #of scripts canceled */
LIST_ENTRY* pLink = NULL; /* (work) */
SCRCTL* pCtl = NULL; /* (work) */
UNREFERENCED( cmdline );
/* Optional argument is the identity of the script to cancel
or "*" (or "all") to cancel all running scripts. The default
if no argument is given is to cancel only the first script.
*/
if (argc > 2)
{
// "Invalid number of arguments"
WRMSG( HHC02446, "E" );
return -1;
}
if (argc < 2)
{
/* Default to first one found */
all = FALSE;
first = TRUE;
}
else /* argc == 2 */
{
/* Cancel all running scripts? */
if (0
|| strcasecmp( argv[1], "*" ) == 0
|| strcasecmp( argv[1], "all" ) == 0
)
{
all = TRUE;
first = FALSE;
}
else /* Specific script */
{
all = FALSE;
first = FALSE;
if ((scrid = atoi( argv[1] )) == 0)
{
// "Invalid argument '%s'%s"
WRMSG( HHC02205, "E", argv[1], ": value not numeric" );
return -1;
}
}
}
obtain_lock( &sysblk.scrlock );
if (!scrlist.Flink || IsListEmpty( &scrlist ))
{
#if 0 // TODO: decide whether old "silent failure" behavior still wanted
return 0;
#else
// "No scripts currently running"
WRMSG( HHC02314, "E" );
release_lock( &sysblk.scrlock );
return -1;
#endif
}
/* Search list for the script(s) to cancel... */
for (pLink = scrlist.Flink; pLink != &scrlist; pLink = pLink->Flink)
{
pCtl = CONTAINING_RECORD( pLink, SCRCTL, link );
if (!pCtl->scr_tid) continue; /* (inactive) */
if (first)
{
pCtl->scr_flags |= SCR_CANCEL;
release_lock( &sysblk.scrlock );
return 0;
}
else if (all)
{
pCtl->scr_flags |= SCR_CANCEL;
count++;
}
else if (pCtl->scr_id == scrid)
{
pCtl->scr_flags |= SCR_CANCEL;
count++;
break;
}
}
release_lock( &sysblk.scrlock );
if (!count)
{
// "Script %s not found"
WRMSG( HHC02316, "E", argv[1] );
return -1;
}
return 0;
}
/*-------------------------------------------------------------------*/
/* Check if script has aborted or been canceled (internal) */
/*-------------------------------------------------------------------*/
static int script_abort( SCRCTL* pCtl )
{
int abort;
if (pCtl->scr_flags & SCR_CANCEL) /* cancel requested? */
{
if (!(pCtl->scr_flags & SCR_CANCELED)) /* no msg given yet? */
{
// "Script %d aborted: '%s'"
WRMSG( HHC02259, "E", pCtl->scr_id, "user cancel request" );
pCtl->scr_flags |= SCR_CANCELED;
}
pCtl->scr_flags |= SCR_ABORT; /* request abort */
}
abort = (pCtl->scr_flags & SCR_ABORT) ? 1 : 0;
return abort;
}
/*-------------------------------------------------------------------*/
/* Process a single script file (internal, external) */
/*-------------------------------------------------------------------*/
int process_script_file( char *script_name, int isrcfile )
{
SCRCTL* pCtl; /* Script processing control */
char script_path[MAX_PATH]; /* Full path of script file */
FILE *fp = NULL; /* Script FILE pointer */
char stmt[ MAX_SCRIPT_STMT ]; /* script statement buffer */
int stmtlen = 0; /* Length of current stmt */
int stmtnum = 0; /* Current stmt line number */
TID tid = thread_id(); /* Our thread Id */
char *p; /* (work) */
int rc; /* (work) */
/* Retrieve our control entry */
if (!(pCtl = FindSCRCTL( tid )))
{
/* If not found it's probably the Hercules ".RC" file */
ASSERT( isrcfile );
/* Create a temporary working control entry */
if (!(pCtl = NewSCRCTL( tid, script_name, isrcfile )))
return -1; /* (error message already issued) */
/* Start over again using our temporary control entry */
rc = process_script_file( script_name, isrcfile );
FreeSCRCTL( pCtl );
return rc;
}
isrcfile = pCtl->scr_isrcfile;
/* Abort script if already at maximum recursion level */
if (pCtl->scr_recursion >= MAX_SCRIPT_DEPTH)
{
// "Script %d aborted: '%s'"
WRMSG( HHC02259, "E", pCtl->scr_id, "script recursion level exceeded" );
pCtl->scr_flags |= SCR_ABORT;
return -1;
}
/* Open the specified script file */
hostpath( script_path, script_name, sizeof( script_path ));
if (!(fp = fopen( script_path, "r" )))
{
/* We only issue the "File not found" error message if the
script file being processed is NOT the ".RC" file since
.RC files are optional. For all OTHER type of errors we
ALWAYS issue an error message, even for the ".RC" file.
*/
int save_errno = errno; /* (save error code for caller) */
{
if (ENOENT != errno) /* If NOT "File Not found" */
{
// "Error in function '%s': '%s'"
WRMSG( HHC02219, "E", "fopen()", strerror( errno ));
}
else if (!isrcfile) /* If NOT the ".RC" file */
{
// "Script file '%s' not found"
WRMSG( HHC01405, "E", script_path );
}
}
errno = save_errno; /* (restore error code for caller) */
return -1;
}
pCtl->scr_recursion++;
/* Read the first line into our statement buffer */
if (!script_abort( pCtl ) && !fgets( stmt, MAX_SCRIPT_STMT, fp ))
{
// "Script %d: begin processing file '%s'"
WRMSG( HHC02260, "I", pCtl->scr_id, script_path );
goto script_end;
}
#if defined(ENABLE_OBJECT_REXX) || defined(ENABLE_REGINA_REXX)
/* Skip past blanks to start of command */
for (p = stmt; isspace( *p ); p++)
; /* (nop; do nothing) */
/* Execute REXX script if line begins with "Slash '/' Asterisk '*'" */
if (!script_abort( pCtl ) && !strncmp( p, "/*", 2 ))
{
char *rcmd[2] = { "exec", NULL };
rcmd[1] = script_name;
fclose( fp ); fp = NULL;
exec_cmd( 2, rcmd, NULL ); /* (synchronous) */
goto script_end;
}
#endif
// "Script %d: begin processing file '%s'"
WRMSG( HHC02260, "I", pCtl->scr_id, script_path );
do
{
stmtnum++;
/* Skip past blanks to start of statement */
for (p = stmt; isspace( *p ); p++)
; /* (nop; do nothing) */
/* Remove trailing whitespace */
for (stmtlen = (int)strlen(p); stmtlen && isspace(p[stmtlen-1]); stmtlen--);
p[stmtlen] = 0;
/* Special handling for 'pause' statement */
if (strncasecmp( p, "pause ", 6 ) == 0)
{
double pauseamt = 0.0; /* (secs to pause) */
struct timespec ts = {0,0}; /* (nanosleep arg) */
U64 i, nsecs = 0; /* (nanoseconds) */
#if defined( ENABLE_BUILTIN_SYMBOLS )
{
char *secs = resolve_symbol_string( p+6 );
pauseamt = atof( secs );
free( secs );
}
#else
pauseamt = atof( p+6 );
#endif
if (pauseamt < 0.0 || pauseamt > 999.0)
{
// "Script %d: file statement only; %s ignored"
WRMSG( HHC02261, "W", pCtl->scr_id, p+6 );
continue; /* (go on to next statement) */
}
nsecs = (U64) (pauseamt * 1000000000.0);
ts.tv_nsec = 250000000; /* 1/4th of a second */
ts.tv_sec = 0;
if (!script_abort( pCtl ) && MLVL( VERBOSE ))
{
// "Script %d: processing paused for %d milliseconds..."
WRMSG( HHC02262, "I", pCtl->scr_id, (int)(pauseamt * 1000.0) );
}
for (i = nsecs; i >= (U64) ts.tv_nsec && !script_abort( pCtl ); i -= (U64) ts.tv_nsec)
nanosleep( &ts, NULL );
if (i && !script_abort( pCtl ))
{
ts.tv_nsec = (long) i;
nanosleep( &ts, NULL );
}
if (!script_abort( pCtl ) && MLVL( VERBOSE ))
{
// "Script %d: processing resumed..."
WRMSG( HHC02263, "I", pCtl->scr_id );
}
continue; /* (go on to next statement) */
}
/* (end 'pause' stmt) */
/* Process statement as command */
panel_command( p );
}
while (!script_abort( pCtl ) && fgets( stmt, MAX_SCRIPT_STMT, fp ));
script_end:
/* Issue termination message and close file */
if (fp)
{
if (feof( fp ))
{
// "Script %d: file '%s' processing ended"
WRMSG( HHC02264, "I", pCtl->scr_id, script_name );
}
else /* (canceled, recursion, or i/o error) */
{
if (!(pCtl->scr_flags & SCR_ABORTED)) /* (no msg issued yet?) */
{
if (!script_abort( pCtl )) /* (not abort request?) */
{
// "Error in function '%s': '%s'"
WRMSG( HHC02219,"E", "read()", strerror( errno ));
pCtl->scr_flags |= SCR_ABORT;
}
// "Script %d: file '%s' aborted due to previous conditions"
WRMSG( HHC02265, "I", pCtl->scr_id, script_path );
pCtl->scr_flags |= SCR_ABORTED;
}
}
fclose( fp );
}
pCtl->scr_recursion--;
return 0;
}
/* end process_script_file */
/*-------------------------------------------------------------------*/
/* Script processing thread - run script in background (internal) */
/*-------------------------------------------------------------------*/
static void *script_thread( void *arg )
{
char* argv[MAX_ARGS]; /* Command arguments array */
int argc; /* Number of cmd arguments */
int i; /* (work) */
TID tid = thread_id();
SCRCTL* pCtl = NULL;
UNREFERENCED(arg);
#ifdef LOGSCRTHREADBEGEND
// "Thread id "TIDPAT", prio %2d, name '%s' started"
WRMSG( HHC00100, "I", (u_long) tid,
get_thread_priority(0), SCRTHREADNAME );
#endif
/* Retrieve our control entry */
pCtl = FindSCRCTL( tid );
ASSERT( pCtl && pCtl->scr_cmdline ); /* (sanity check) */
/* Parse the command line into its individual arguments...
Note: original command line now sprinkled with nulls */
parse_args( pCtl->scr_cmdline, MAX_ARGS, argv, &argc );
ASSERT( argc > 1 ); /* (sanity check) */
/* Process each filename argument on this script command */
for (i=1; !script_abort( pCtl ) && i < argc; i++)
{
UpdSCRCTL( pCtl, argv[i] );
process_script_file( argv[i], 0 );
}
/* Remove entry from list and exit */
FreeSCRCTL( pCtl );
#ifdef LOGSCRTHREADBEGEND
// "Thread id "TIDPAT", prio %2d, name '%s' ended"
WRMSG( HHC00101, "I", (u_long) tid,
get_thread_priority(0), SCRTHREADNAME );
#endif
return NULL;
}
/* end script_thread */
/*-------------------------------------------------------------------*/
/* 'script' command handler (external) */
/*-------------------------------------------------------------------*/
int script_cmd( int argc, char* argv[], char* cmdline )
{
char* scr_cmdline = NULL; /* Copy of original command-line */
TID tid = thread_id();
SCRCTL* pCtl = NULL;
int rc = 0;
ASSERT( cmdline && *cmdline ); /* (sanity check) */
/* Display all running scripts if no arguments given */
if (argc <= 1)
{
ListScriptsIds();
return 0;
}
/* Find script processing control entry for this thead */
if ((pCtl = FindSCRCTL( tid )) != NULL)
{
/* This script is recursively calling itself again */
int i, rc2 = 0;
for (i=1; !script_abort( pCtl ) && i < argc; i++)
{
UpdSCRCTL( pCtl, argv[i] );
rc = process_script_file( argv[i], 0 );
rc2 = MAX( rc, rc2 );
}
return rc2;
}
/* Create control entry and add to list */
if (!(pCtl = NewSCRCTL( 0, argv[1], 0 )))
return -1; /* (error msg already issued) */
/* Create a copy of the command line */
if (!(scr_cmdline = strdup( cmdline )))
{
// "Out of memory"
WRMSG( HHC00152, "E" );
FreeSCRCTL( pCtl );
return -1;
}
obtain_lock( &sysblk.scrlock );
pCtl->scr_cmdline = scr_cmdline;
/* Create the associated script processing thread */
if ((rc = create_thread( &pCtl->scr_tid, DETACHED,
script_thread, NULL, SCRTHREADNAME )) != 0)
{
pCtl->scr_tid = 0; /* (deactivate) */
// "Error in function create_thread(): %s"
WRMSG( HHC00102, "E", strerror( rc ));
release_lock( &sysblk.scrlock );
FreeSCRCTL( pCtl );
return -1;
}
release_lock( &sysblk.scrlock );
return 0;
}
/* end script_cmd */
#endif /*!defined(_GEN_ARCH)*/
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