projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b6a09b76 BJ |
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 | } |