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#include "rholo.h" |
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#include "paths.h" |
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#include <signal.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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|
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/* the following must be consistent with rholo.h */ |
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int NVARS = NRHVARS; /* total number of variables */ |
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int rtargc = 1; /* rtrace command */ |
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char *rtargv[128] = {"rtrace", NULL}; |
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|
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int orig_mode = -1; /* original file mode (-1 if unchanged) */ |
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|
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long nraysdone = 0L; /* number of rays done */ |
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long npacksdone = 0L; /* number of packets done */ |
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|
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PACKET *freepacks; /* available packets */ |
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|
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char *sigerr[NSIG]; /* signal error messages */ |
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|
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extern time_t time(); |
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|
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|
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} |
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|
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|
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onsig(signo) /* fatal signal */ |
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int signo; |
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{ |
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static int gotsig = 0; |
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|
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if (gotsig++) /* two signals and we're gone! */ |
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_exit(signo); |
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|
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alarm(30); /* allow 30 seconds to clean up */ |
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signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
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eputs("signal - "); |
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eputs(sigerr[signo]); |
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eputs("\n"); |
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quit(3); |
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} |
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|
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|
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sigdie(signo, msg) /* set fatal signal */ |
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int signo; |
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char *msg; |
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{ |
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if (signal(signo, onsig) == SIG_IGN) |
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signal(signo, SIG_IGN); |
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sigerr[signo] = msg; |
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} |
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|
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|
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int |
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resfmode(fd, mod) /* restrict open file access mode */ |
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int fd, mod; |
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{ |
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struct stat stbuf; |
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/* get original mode */ |
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if (fstat(fd, &stbuf) < 0) |
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error(SYSTEM, "cannot stat open holodeck file"); |
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mod &= stbuf.st_mode; /* always more restrictive */ |
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if (mod == stbuf.st_mode) |
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return(-1); /* already set */ |
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/* else change it */ |
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if (fchmod(fd, mod) < 0) { |
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error(WARNING, "cannot change holodeck file access mode"); |
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return(-1); |
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} |
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return(stbuf.st_mode); /* return original mode */ |
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} |
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|
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|
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initrholo() /* get our holodeck running */ |
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{ |
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extern int global_packet(); |
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freepacks[i].next = &freepacks[i+1]; |
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} |
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} |
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/* set up signal handling */ |
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sigdie(SIGINT, "Interrupt"); |
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sigdie(SIGHUP, "Hangup"); |
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sigdie(SIGTERM, "Terminate"); |
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sigdie(SIGPIPE, "Broken pipe"); |
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sigdie(SIGALRM, "Alarm clock"); |
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#ifdef SIGXCPU |
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sigdie(SIGXCPU, "CPU limit exceeded"); |
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sigdie(SIGXFSZ, "File size exceeded"); |
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#endif |
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/* protect holodeck file */ |
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orig_mode = resfmode(hdlist[0]->fd, ncprocs>0 ? 0 : 0444); |
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return; |
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memerr: |
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error(SYSTEM, "out of memory in initrholo"); |
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creatholo(gp) /* create a holodeck output file */ |
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HDGRID *gp; |
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{ |
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extern char VersionID[]; |
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long endloc = 0; |
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int fd; |
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FILE *fp; |
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} |
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/* write information header */ |
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newheader("RADIANCE", fp); |
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fprintf(fp, "SOFTWARE= %s\n", VersionID); |
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printvars(fp); |
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fputformat(HOLOFMT, fp); |
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fputc('\n', fp); |
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{ |
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int status = 0; |
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|
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if (outdev != NULL) /* close display */ |
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disp_close(); |
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if (hdlist[0] != NULL) { /* flush holodeck */ |
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if (ncprocs > 0) { |
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done_packets(flush_queue()); |
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} else |
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hdflush(NULL); |
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} |
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if (orig_mode >= 0) /* reset holodeck access mode */ |
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fchmod(hdlist[0]->fd, orig_mode); |
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if (outdev != NULL) /* close display */ |
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disp_close(); |
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exit(ec ? ec : status); /* exit */ |
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} |