| 1 | #include "uucp.h" |
| 2 | |
| 3 | |
| 4 | /******* |
| 5 | * gename(pre, sys, grade, file) generate file name |
| 6 | * char grade, *sys, pre, *file; |
| 7 | * |
| 8 | * return codes: none |
| 9 | */ |
| 10 | |
| 11 | gename(pre, sys, grade, file) |
| 12 | char pre, *sys, grade, *file; |
| 13 | { |
| 14 | char sqnum[5]; |
| 15 | |
| 16 | getseq(sqnum); |
| 17 | sprintf(file, "%c.%.7s%c%.4s", pre, sys, grade, sqnum); |
| 18 | DEBUG(4, "file - %s\n", file); |
| 19 | return; |
| 20 | } |
| 21 | |
| 22 | |
| 23 | #define SLOCKTIME 10L |
| 24 | #define SLOCKTRIES 5 |
| 25 | #define SEQLEN 4 |
| 26 | |
| 27 | /******* |
| 28 | * getseq(snum) get next sequence number |
| 29 | * char *snum; |
| 30 | * |
| 31 | * return codes: none |
| 32 | */ |
| 33 | |
| 34 | getseq(snum) |
| 35 | char *snum; |
| 36 | { |
| 37 | FILE *fp; |
| 38 | int n; |
| 39 | |
| 40 | for (n = 0; n < SLOCKTRIES; n++) { |
| 41 | if (!ulockf( SEQLOCK, SLOCKTIME)) |
| 42 | break; |
| 43 | sleep(5); |
| 44 | } |
| 45 | |
| 46 | ASSERT(n < SLOCKTRIES, "CAN NOT GET %s", SEQLOCK); |
| 47 | |
| 48 | if ((fp = fopen(SEQFILE, "r")) != NULL) { |
| 49 | /* read sequence number file */ |
| 50 | fscanf(fp, "%4d", &n); |
| 51 | fp = freopen(SEQFILE, "w", fp); |
| 52 | ASSERT(fp != NULL, "CAN NOT OPEN %s", SEQFILE); |
| 53 | chmod(SEQFILE, 0666); |
| 54 | } |
| 55 | else { |
| 56 | /* can not read file - create a new one */ |
| 57 | if ((fp = fopen(SEQFILE, "w")) == NULL) |
| 58 | /* can not write new seqeunce file */ |
| 59 | return(FAIL); |
| 60 | chmod(SEQFILE, 0666); |
| 61 | n = 0; |
| 62 | } |
| 63 | |
| 64 | fprintf(fp, "%s", sprintf(snum, "%04d", ++n)); |
| 65 | fclose(fp); |
| 66 | rmlock(SEQLOCK); |
| 67 | return(0); |
| 68 | } |