projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 53102063 C |
1 | /* ftamaccess1.c - FPM: initiate file access */ |
| 2 | ||
| 3 | #ifndef lint | |
| 4 | static char *rcsid = "$Header: /f/osi/ftam/RCS/ftamaccess1.c,v 7.1 91/02/22 09:22:33 mrose Interim $"; | |
| 5 | #endif | |
| 6 | ||
| 7 | /* | |
| 8 | * $Header: /f/osi/ftam/RCS/ftamaccess1.c,v 7.1 91/02/22 09:22:33 mrose Interim $ | |
| 9 | * | |
| 10 | * | |
| 11 | * $Log: ftamaccess1.c,v $ | |
| 12 | * Revision 7.1 91/02/22 09:22:33 mrose | |
| 13 | * Interim 6.8 | |
| 14 | * | |
| 15 | * Revision 7.0 89/11/23 21:53:20 mrose | |
| 16 | * Release 6.0 | |
| 17 | * | |
| 18 | */ | |
| 19 | ||
| 20 | /* | |
| 21 | * NOTICE | |
| 22 | * | |
| 23 | * Acquisition, use, and distribution of this module and related | |
| 24 | * materials are subject to the restrictions of a license agreement. | |
| 25 | * Consult the Preface in the User's Manual for the full terms of | |
| 26 | * this agreement. | |
| 27 | * | |
| 28 | */ | |
| 29 | ||
| 30 | ||
| 31 | /* LINTLIBRARY */ | |
| 32 | ||
| 33 | #include <stdio.h> | |
| 34 | #include <signal.h> | |
| 35 | #include "fpkt.h" | |
| 36 | ||
| 37 | /* \f F-{LOCATE,ERASE}.REQUEST */ | |
| 38 | ||
| 39 | int FAccessRequest (sd, operation, identity, lock, fti) | |
| 40 | int sd; | |
| 41 | int operation; | |
| 42 | struct FADUidentity *identity; | |
| 43 | int lock; /* F-LOCATE.REQUEST only */ | |
| 44 | struct FTAMindication *fti; | |
| 45 | { | |
| 46 | SBV smask; | |
| 47 | int result, | |
| 48 | state; | |
| 49 | register struct ftamblk *fsb; | |
| 50 | ||
| 51 | switch (operation) { | |
| 52 | case FA_OPS_LOCATE: | |
| 53 | state = FSB_LOCATE; | |
| 54 | break; | |
| 55 | ||
| 56 | case FA_OPS_ERASE: | |
| 57 | state = FSB_ERASE; | |
| 58 | break; | |
| 59 | ||
| 60 | default: | |
| 61 | return ftamlose (fti, FS_GEN_NOREASON, 0, NULLCP, | |
| 62 | "bad value for operation parameter"); | |
| 63 | } | |
| 64 | missingP (identity); | |
| 65 | missingP (fti); | |
| 66 | ||
| 67 | smask = sigioblock (); | |
| 68 | ||
| 69 | ftamPsig (fsb, sd); | |
| 70 | ||
| 71 | result = FAccessRequestAux (fsb, state, identity, lock, fti); | |
| 72 | ||
| 73 | (void) sigiomask (smask); | |
| 74 | ||
| 75 | return result; | |
| 76 | } | |
| 77 | ||
| 78 | /* \f */ | |
| 79 | ||
| 80 | static int FAccessRequestAux (fsb, state, identity, lock, fti) | |
| 81 | register struct ftamblk *fsb; | |
| 82 | int state; | |
| 83 | struct FADUidentity *identity; | |
| 84 | int lock; | |
| 85 | struct FTAMindication *fti; | |
| 86 | { | |
| 87 | int result; | |
| 88 | PE pe; | |
| 89 | struct PSAPindication pis; | |
| 90 | struct PSAPindication *pi = &pis; | |
| 91 | struct PSAPabort *pa = &pi -> pi_abort; | |
| 92 | register struct type_FTAM_PDU *pdu; | |
| 93 | register struct type_FTAM_F__LOCATE__request *req; | |
| 94 | ||
| 95 | if (!(fsb -> fsb_flags & FSB_INIT)) | |
| 96 | return ftamlose (fti, FS_GEN (fsb), 0, NULLCP, "not initiator"); | |
| 97 | if (fsb -> fsb_state != FSB_DATAIDLE) | |
| 98 | return ftamlose (fti, FS_GEN (fsb), 0, NULLCP, "wrong state"); | |
| 99 | if (!(fsb -> fsb_units & FUNIT_ACCESS)) | |
| 100 | return ftamlose (fti, FS_GEN (fsb), 0, NULLCP, | |
| 101 | "file access not allowed"); | |
| 102 | ||
| 103 | pe = NULLPE; | |
| 104 | if ((pdu = (struct type_FTAM_PDU *) calloc (1, sizeof *pdu)) == NULL) { | |
| 105 | no_mem: ; | |
| 106 | (void) ftamlose (fti, FS_GEN (fsb), 1, NULLCP, "out of memory"); | |
| 107 | out: ; | |
| 108 | if (pe) | |
| 109 | pe_free (pe); | |
| 110 | if (pdu) | |
| 111 | free_FTAM_PDU (pdu); | |
| 112 | if (fti -> fti_abort.fta_action == FACTION_PERM) | |
| 113 | freefsblk (fsb); | |
| 114 | return NOTOK; | |
| 115 | } | |
| 116 | /* F-ERASE-request is identical... */ | |
| 117 | pdu -> offset = state != FSB_LOCATE ? type_FTAM_PDU_f__erase__request | |
| 118 | : type_FTAM_PDU_f__locate__request; | |
| 119 | if ((req = (struct type_FTAM_F__LOCATE__request *) | |
| 120 | calloc (1, sizeof *req)) == NULL) | |
| 121 | goto no_mem; | |
| 122 | pdu -> un.f__locate__request = req; | |
| 123 | if ((req -> file__access__data__unit__identity = | |
| 124 | faduid2fpm (fsb, identity, fti)) == NULL) | |
| 125 | goto out; | |
| 126 | if ((fsb -> fsb_units & FUNIT_FADULOCK) && state == FSB_LOCATE) { | |
| 127 | if ((req -> fadu__lock = (struct type_FTAM_FADU__Lock *) | |
| 128 | calloc (1, sizeof *req -> fadu__lock)) | |
| 129 | == NULL) | |
| 130 | goto no_mem; | |
| 131 | req -> fadu__lock -> parm = lock ? int_FTAM_FADU__Lock_on | |
| 132 | : int_FTAM_FADU__Lock_off; | |
| 133 | } | |
| 134 | ||
| 135 | if (encode_FTAM_PDU (&pe, 1, 0, NULLCP, pdu) == NOTOK) { | |
| 136 | (void) ftamlose (fti, FS_GEN (fsb), 1, NULLCP, | |
| 137 | "error encoding PDU: %s", PY_pepy); | |
| 138 | goto out; | |
| 139 | } | |
| 140 | ||
| 141 | pe -> pe_context = fsb -> fsb_id; | |
| 142 | ||
| 143 | fsbtrace (fsb, (fsb -> fsb_fd, "P-DATA.REQUEST", | |
| 144 | state == FSB_LOCATE ? "F-LOCATE-request" | |
| 145 | : "F-ERASE-request", pe, 0)); | |
| 146 | ||
| 147 | result = PDataRequest (fsb -> fsb_fd, &pe, 1, pi); | |
| 148 | ||
| 149 | pe_free (pe); | |
| 150 | pe = NULLPE; | |
| 151 | free_FTAM_PDU (pdu); | |
| 152 | pdu = NULL; | |
| 153 | ||
| 154 | if (result == NOTOK) { | |
| 155 | (void) ps2ftamlose (fsb, fti, "PDataRequest", pa); | |
| 156 | goto out; | |
| 157 | } | |
| 158 | ||
| 159 | fsb -> fsb_state = state; | |
| 160 | ||
| 161 | return FWaitRequestAux (fsb, NOTOK, fti); | |
| 162 | } |