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Diffstat (limited to 'libusal/scsi-unixware.c')
| -rw-r--r-- | libusal/scsi-unixware.c | 922 |
1 files changed, 922 insertions, 0 deletions
diff --git a/libusal/scsi-unixware.c b/libusal/scsi-unixware.c new file mode 100644 index 0000000..4a149f1 --- /dev/null +++ b/libusal/scsi-unixware.c @@ -0,0 +1,922 @@ +/* + * This file has been modified for the cdrkit suite. + * + * The behaviour and appearence of the program code below can differ to a major + * extent from the version distributed by the original author(s). + * + * For details, see Changelog file distributed with the cdrkit package. If you + * received this file from another source then ask the distributing person for + * a log of modifications. + * + */ + +/* @(#)scsi-unixware.c 1.36 04/01/15 Copyright 1998 J. Schilling, Santa Cruz Operation */ +/* + * Interface for the SCO UnixWare SCSI implementation. + * + * Warning: you may change this source, but if you do that + * you need to change the _usal_version and _usal_auth* string below. + * You may not return "schily" for an SCG_AUTHOR request anymore. + * Choose your name instead of "schily" and make clear that the version + * string is related to a modified source. + * + * Copyright (c) 1998 J. Schilling, Santa Cruz Operation + */ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#undef sense +#undef SC_PARITY +#undef scb + +#include <sys/sysmacros.h> /* XXX Falsch, richtig -> sys/mkdev.h */ +#include <sys/scsi.h> +#include <sys/sdi_edt.h> +#include <sys/sdi.h> + +/* + * Warning: you may change this source, but if you do that + * you need to change the _usal_version and _usal_auth* string below. + * You may not return "schily" for an SCG_AUTHOR request anymore. + * Choose your name instead of "schily" and make clear that the version + * string is related to a modified source. + */ +static char _usal_trans_version[] = "scsi-unixware.c-1.36"; /* The version for this transport*/ + +/* Max. number of usal scsibusses. The real limit would be */ +/* MAX_HBA * MAX_BUS (which would be 32 * 8 on UnixWare 2.1/7.x), */ +/* but given that we will hardly see such a beast, lets take 32 */ + +#define MAX_SCG 32 + + /* maximum defines for UnixWare 2.x/7.x from <sys/sdi_edt.h> */ + +#define MAX_TGT MAX_EXTCS /* Max # of target id's */ +#define MAX_LUN MAX_EXLUS /* Max # of lun's */ + +#define MAX_DMA (32*1024) +#ifdef __WHAT_TODO__ +#define MAX_DMA (16*1024) /* On UnixWare 2.1.x w/ AHA2940 HBA */ + /* the max DMA size is 16KB. */ +#endif + +#define MAXLINE 80 +#define MAXPATH 256 + +#define DEV_DIR "/tmp" +#define DEV_NAME "usal.s%1dt%1dl%1d" + +#define SCAN_HBA "%d:%d,%d,%d:%7s : %n" +#define SCAN_DEV "%d,%d,%d:%7s : %n" + +#define PRIM_HBA "/dev/hba/hba1" +#define SCSI_CFG "LC_ALL=C /etc/scsi/pdiconfig -l" + +#define SCAN_ALL "LIBSCG_SCAN_ALL" + +#define SDI_VALID 0x01 /* Entry may be used (non disk) */ +#define SDI_ATAPI 0x02 /* Connected via IDE HBA */ +#define SDI_INITIATOR 0x04 /* This is the initiator target ID */ + +typedef struct usal2sdi { + short open; + short flags; + short fd; + char hba; + char bus; + char tgt; + char lun; + + dev_t node; + dev_t major; + dev_t minor; +/*#define SCG_DEBUG*/ +#ifdef SCG_DEBUG + char type[20]; + char vend[40]; + char devn[32]; +#endif +} usal2sdi_t; + +static usal2sdi_t sdidevs [MAX_SCG][MAX_TGT][MAX_LUN]; +static BOOL sdiinit = FALSE; + +struct usal_local { + short usalfiles[MAX_SCG][MAX_TGT][MAX_LUN]; +}; +#define usallocal(p) ((struct usal_local *)((p)->local)) + +static int unixware_init(SCSI *usalp); +static int do_usal_cmd(SCSI *usalp, struct usal_cmd *sp); +static int do_usal_sense(SCSI *usalp, struct usal_cmd *sp); +static FILE *xpopen(char *cmd, char *type); +static int xpclose(FILE *f); + +/* + * ------------------------------------------------------------------------- + * SCO UnixWare 2.1.x / UnixWare 7 provides a scsi pass-through mechanism, + * which can be used to access any configured scsi device. + * + * NOTE: The libusal UnixWare passthrough routines have changed with + * cdrecord-1.8 to enable the -scanbus, -load, -eject option + * regardless of the status of media and the addressing + * scheme is now the same as used on many other platforms like + * Solaris, Linux etc. + * + * =============================================================== + * RUN 'cdrecord -scanbus' TO SEE THE DEVICE ADDRESSES YOU CAN USE + * =============================================================== + */ + +/* + * Return version information for the low level SCSI transport code. + * This has been introduced to make it easier to trace down problems + * in applications. + * + */ +static char * +usalo_version(SCSI *usalp, int what) +{ + if (usalp != (SCSI *)0) { + switch (what) { + + case SCG_VERSION: + return (_usal_trans_version); + /* + * If you changed this source, you are not allowed to + * return "schily" for the SCG_AUTHOR request. + */ + case SCG_AUTHOR: + return (_usal_auth_cdrkit); + case SCG_SCCS_ID: + return (__sccsid); + } + } + return ((char *)0); +} + + +static int +usalo_help(SCSI *usalp, FILE *f) +{ + __usal_help(f, "SDI_SEND", "Generic SCSI", + "", "bus,target,lun", "1,2,0", TRUE, FALSE); + return (0); +} + +/* + * --------------------------------------------------------------- + * This routine is introduced to create all device nodes necessary + * to access any detected scsi device. It parses the output of + * /etc/scsi/pdiconfig -l and creates passthru device node for each + * found scsi device apart from the listed hba's. + * + */ + +static int +unixware_init(SCSI *usalp) +{ + FILE *cmd; + int hba = 0, bus = 0, usal = 0, tgt = 0, lun = 0; + int nusal = -1, lhba = -1, lbus = 0; + int atapi, fd, nopen = 0, pos = 0, len = 0; + int s, t, l; + int scan_disks; + char lines[MAXLINE]; + char class[MAXLINE]; + char ident[MAXLINE]; + char devnm[MAXPATH]; + char dname[MAXPATH]; + struct stat stbuf; + dev_t ptdev, major, minor, node; + char **evsave; +extern char **environ; + + /* Check for validity of primary hostbus adapter node */ + + if (stat(PRIM_HBA, &stbuf) < 0) { + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "Can not stat() primary hba (%s)", + PRIM_HBA); + return (-1); + } + + if (!S_ISCHR(stbuf.st_mode)) { + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "Primary hba (%s) not a character device", + PRIM_HBA); + return (-1); + } + + major = getmajor(stbuf.st_rdev); + + /* + * Check whether we want to scan all devices + */ + if (getenv(SCAN_ALL) != NULL) { + scan_disks = 1; + } else { + scan_disks = 0; + } + + /* read pdiconfig output and get all attached scsi devices ! */ + + evsave = environ; + environ = 0; + if ((cmd = xpopen(SCSI_CFG, "r")) == NULL) { + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "Error popen() for \"%s\"", + SCSI_CFG); + environ = evsave; + return (-1); + } + environ = evsave; + + + for (;;) { + if (fgets(lines, MAXLINE, cmd) == NULL) + break; + + memset(class, '\0', sizeof (class)); + memset(ident, '\0', sizeof (ident)); + + if (lines[0] == ' ') { + sscanf(lines, SCAN_DEV, &bus, &tgt, &lun, class, &pos); + hba = lhba; + } else { + sscanf(lines, SCAN_HBA, &hba, &bus, &tgt, &lun, class, &pos); + nusal++; + lhba = hba; + atapi = 0; + } + + /* We can't sscanf() the ident string of the device */ + /* as it may contain characters sscanf() will */ + /* recognize as a delimiter. So do a strcpy() instead ! */ + + len = strlen(lines) - pos - 1; /* don't copy the '\n' */ + + strncpy(ident, &lines[pos], len); + + if (usalp->debug > 0) { + fprintf((FILE *)usalp->errfile, + "SDI -> %d:%d,%d,%d: %-7s : %s\n", + hba, bus, tgt, lun, class, ident); + } + if (bus != lbus) { + nusal++; + lbus = bus; + } + + usal = nusal; + + /* check whether we have a HBA or a SCSI device, don't */ + /* let HBA's be valid device for cdrecord, but mark */ + /* them as a controller (initiator = 1). */ + + /* Don't detect disks, opening a mounted disk can hang */ + /* the disk subsystem !!! So unless we set an */ + /* environment variable LIBSCG_SCAN_ALL, we will ignore */ + /* disks */ + + if (strstr(class, "HBA") == NULL) { + if (strstr(class, "DISK") != NULL) { + if (scan_disks) + sdidevs[usal][tgt][lun].flags |= SDI_VALID; + else + sdidevs[usal][tgt][lun].flags &= ~SDI_VALID; + } else { + sdidevs[usal][tgt][lun].flags |= SDI_VALID; + } + } else { + sdidevs[usal][tgt][lun].flags |= SDI_INITIATOR; + } + + + /* There is no real flag that shows a HBA as an ATAPI */ + /* controller, so as we know the driver is called 'ide' */ + /* we can check the ident string for the occurence of it*/ + + if (strstr(ident, "(ide,") != NULL) { + atapi = 1; + } + + /* + * Fill the sdidevs array with all we know now. + * Do not overwrite fields that may contain old state like + * sdidevs[usal][tgt][lun].open + */ + + if (atapi) + sdidevs[usal][tgt][lun].flags |= SDI_ATAPI; + else + sdidevs[usal][tgt][lun].flags &= ~SDI_ATAPI; + + sdidevs[usal][tgt][lun].hba = hba; + sdidevs[usal][tgt][lun].bus = bus; + sdidevs[usal][tgt][lun].tgt = tgt; + sdidevs[usal][tgt][lun].lun = lun; + +#ifdef SCG_DEBUG + strcpy(sdidevs[usal][tgt][lun].type, class); + strcpy(sdidevs[usal][tgt][lun].vend, ident); + + snprintf(sdidevs[usal][tgt][lun].devn, + sizeof (sdidevs[usal][tgt][lun].devn), + DEV_NAME, usal, tgt, lun); +#endif + snprintf(devnm, sizeof (devnm), + DEV_NAME, usal, tgt, lun); + + minor = SDI_MINOR(hba, tgt, lun, bus); + node = makedevice(major, minor); + + sdidevs[usal][tgt][lun].major = major; + sdidevs[usal][tgt][lun].minor = minor; + sdidevs[usal][tgt][lun].node = node; + + if (usalp->debug > 0) { + + fprintf((FILE *)usalp->errfile, + "h = %d; b = %d, s = %d, t = %d, l = %d, a = %d, ma = %d, mi = %2d, dev = '%s', id = '%s'\n", + hba, bus, usal, tgt, lun, + (sdidevs[usal][tgt][lun].flags & SDI_ATAPI) != 0, + sdidevs[usal][tgt][lun].major, + sdidevs[usal][tgt][lun].minor, + devnm, + ident); + } + + + } + + if (xpclose(cmd) == -1) { + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "Error pclose() for \"%s\"", + SCSI_CFG); + return (-1); + } + + + /* create all temporary device nodes */ + + for (s = 0; s < MAX_SCG; s++) { + for (t = 0; t < MAX_TGT; t++) { + for (l = 0; l < MAX_LUN; l++) { + + if ((sdidevs[s][t][l].flags & SDI_VALID) == 0) { + if (sdidevs[s][t][l].fd >= 0) { + close(sdidevs[s][t][l].fd); + } + sdidevs[s][t][l].fd = -1; + sdidevs[s][t][l].open = 0; + continue; + } + + /* Make pass-through interface device node */ + + snprintf(devnm, + sizeof (devnm), + DEV_NAME, s, t, l); + + snprintf(dname, sizeof (dname), + "%s/%s", DEV_DIR, devnm); + + ptdev = sdidevs[s][t][l].node; + + if (mknod(dname, S_IFCHR | 0700, ptdev) < 0) { + if (errno == EEXIST) { + unlink(dname); + + if (mknod(dname, S_IFCHR | 0700, ptdev) < 0) { + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "mknod() error for \"%s\"", dname); + return (-1); + } + } else { + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "mknod() error for \"%s\"", dname); + return (-1); + } + } + + /* Open pass-through device node */ + + if ((fd = open(dname, O_RDONLY)) < 0) { + if (errno == EBUSY && sdidevs[s][t][l].open > 0) { + /* + * Device has already been opened, just + * return the saved file desc. + */ + fd = sdidevs[s][t][l].fd; + } else { + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "can not open pass-through %s", dname); + return (-1); + } + } + + /* + * If for whatever reason we may open a pass through + * device more than once, this will waste fs's as we + * do not check for sdidevs[s][t][l].fd == -1. + */ + sdidevs[s][t][l].fd = fd; + sdidevs[s][t][l].open++; + nopen++; + usallocal(usalp)->usalfiles[s][t][l] = (short) fd; + + if (usalp->debug > 0) { + + fprintf((FILE *)usalp->errfile, + "s = %d, t = %d, l = %d, dev = %s, fd = %d\n", + s, t, l, + devnm, + sdidevs[s][t][l].fd); + } + + } + } + } + + return (nopen); +} + + +static int +usalo_open(SCSI *usalp, char *device) +{ + int busno = usal_scsibus(usalp); + int tgt = usal_target(usalp); + int tlun = usal_lun(usalp); + int b, t, l; + + if (busno >= MAX_SCG || tgt >= MAX_TGT || tlun >= MAX_LUN) { + errno = EINVAL; + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "Illegal value for busno, target or lun '%d,%d,%d'", + busno, tgt, tlun); + return (-1); + } + + if (usalp->local == NULL) { + usalp->local = malloc(sizeof (struct usal_local)); + if (usalp->local == NULL) + return (0); + + for (b = 0; b < MAX_SCG; b++) { + for (t = 0; t < MAX_TGT; t++) { + for (l = 0; l < MAX_LUN; l++) + usallocal(usalp)->usalfiles[b][t][l] = (short)-1; + } + } + } + + if (!sdiinit) { + sdiinit = TRUE; + memset(sdidevs, 0, sizeof (sdidevs)); /* init tmp_structure */ + for (b = 0; b < MAX_SCG; b++) { + for (t = 0; t < MAX_TGT; t++) { + for (l = 0; l < MAX_LUN; l++) { + + sdidevs[b][t][l].flags = 0; + sdidevs[b][t][l].fd = -1; + sdidevs[b][t][l].open = 0; + } + } + } + } + + if (*device != '\0') { /* we don't allow old dev usage */ + errno = EINVAL; + if (usalp->errstr) + snprintf(usalp->errstr, SCSI_ERRSTR_SIZE, + "Open by 'devname' no longer supported on this OS"); + return (-1); + } else { /* this is the new stuff */ + /* it will do the initialisation */ + /* and return the number of */ + /* detected devices to be used */ + /* with the new addressing */ + /* scheme. */ + + return (unixware_init(usalp)); + } + +} + + +static int +usalo_close(SCSI *usalp) +{ + register int f; + register int b; + register int t; + register int l; + + if (usalp->local == NULL) + return (-1); + + for (b = 0; b < MAX_SCG; b++) { + for (t = 0; t < MAX_TGT; t++) { + for (l = 0; l < MAX_LUN; l++) { + + f = usallocal(usalp)->usalfiles[b][t][l]; + if (f >= 0) { + if (sdidevs[b][t][l].open > 0) + sdidevs[b][t][l].open--; + if (sdidevs[b][t][l].open <= 0) { + if (sdidevs[b][t][l].fd >= 0) + close(sdidevs[b][t][l].fd); + sdidevs[b][t][l].fd = -1; + sdidevs[b][t][l].flags &= ~SDI_VALID; + } + } + usallocal(usalp)->usalfiles[b][t][l] = (short)-1; + } + } + } + return (0); +} + +static long +usalo_maxdma(SCSI *usalp, long amt) +{ + return (MAX_DMA); +} + + +static void * +usalo_getbuf(SCSI *usalp, long amt) +{ + if (usalp->debug > 0) { + fprintf((FILE *)usalp->errfile, + "usalo_getbuf: %ld bytes\n", amt); + } + usalp->bufbase = (void *) valloc((size_t)(amt)); + + return (usalp->bufbase); +} + +static void +usalo_freebuf(SCSI *usalp) +{ + if (usalp->bufbase) + free(usalp->bufbase); + usalp->bufbase = NULL; +} + +static BOOL +usalo_havebus(SCSI *usalp, int busno) +{ + register int t; + register int l; + + if (busno < 0 || busno >= MAX_SCG) + return (FALSE); + + if (usalp->local == NULL) + return (FALSE); + + for (t = 0; t < MAX_TGT; t++) { + for (l = 0; l < MAX_LUN; l++) + if (usallocal(usalp)->usalfiles[busno][t][l] >= 0) + return (TRUE); + } + return (FALSE); +} + +static int +usalo_fileno(SCSI *usalp, int busno, int tgt, int tlun) +{ + if (busno < 0 || busno >= MAX_SCG || + tgt < 0 || tgt >= MAX_TGT || + tlun < 0 || tlun >= MAX_LUN) + return (-1); + + if (usalp->local == NULL) + return (-1); + + return ((int)usallocal(usalp)->usalfiles[busno][tgt][tlun]); +} + +static int +usalo_initiator_id(SCSI *usalp) +{ + register int t; + register int l; + register int busno; + + busno = usal_scsibus(usalp); + + if (busno < 0 || busno >= MAX_SCG) + return (FALSE); + + for (t = 0; t < MAX_TGT; t++) { + for (l = 0; l < MAX_LUN; l++) + if ((sdidevs[busno][t][l].flags & SDI_INITIATOR) != 0) { + if (usalp->debug > 0) { + fprintf((FILE *)usalp->errfile, + "usalo_initiator_id: id = %d\n", t); + } + return (t); + } + } + + return (-1); +} + +static int +usalo_isatapi(SCSI *usalp) +{ + /* if the new address method is used we know if this is ATAPI */ + + return ((sdidevs[usal_scsibus(usalp)][usal_target(usalp)][usal_lun(usalp)].flags & SDI_ATAPI) != 0); +} + +static int +usalo_reset(SCSI *usalp, int what) +{ + int f = usalp->fd; + + errno = EINVAL; + +#if defined(SDI_TRESET) || defined(SDI_BRESET) + if (what == SCG_RESET_NOP) { + errno = 0; + return (0); + } + +#ifdef SDI_TRESET + if (what == SCG_RESET_TGT) { + errno = 0; + if (ioctl(f, SDI_TRESET, 0) >= 0) + return (0); + } +#endif + +#ifdef SDI_BRESET + if (what == SCG_RESET_BUS) { + errno = 0; + if (ioctl(f, SDI_BRESET, 0) >= 0) + return (0); + } +#endif + +#endif /* defined(SDI_TRESET) || defined(SDI_BRESET) */ + + return (-1); +} + +static int +do_usal_cmd(SCSI *usalp, struct usal_cmd *sp) +{ + int ret; + int i; + struct sb scsi_cmd; + struct scb *scbp; + + memset(&scsi_cmd, 0, sizeof (scsi_cmd)); + + scsi_cmd.sb_type = ISCB_TYPE; + scbp = &scsi_cmd.SCB; + + scbp->sc_cmdpt = (caddr_t) sp->cdb.cmd_cdb; + scbp->sc_cmdsz = sp->cdb_len; + + scbp->sc_datapt = sp->addr; + scbp->sc_datasz = sp->size; + + if (!(sp->flags & SCG_RECV_DATA) && (sp->size > 0)) + scbp->sc_mode = SCB_WRITE; + else + scbp->sc_mode = SCB_READ; + + scbp->sc_time = sp->timeout; + + sp->error = SCG_NO_ERROR; + errno = 0; + for (;;) { + if ((ret = ioctl(usalp->fd, SDI_SEND, &scsi_cmd)) < 0) { + if (errno == EAGAIN) { + sleep(1); + errno = 0; + continue; + } + sp->ux_errno = errno; + if (errno == 0) + sp->ux_errno = EIO; + sp->error = SCG_RETRYABLE; + +#ifdef __needed__ + if (errno == ENOTTY || errno == EINVAL || + errno == EACCES) { + return (-1); + } +#endif + return (ret); + } + break; + } + sp->ux_errno = errno; + sp->resid = scbp->sc_resid; + memset(&sp->u_scb.Scb, 0, sizeof (sp->u_scb.Scb)); + sp->u_scb.cmd_scb[0] = scbp->sc_status; + + if (sp->u_scb.cmd_scb[0] & 0x02) { + if (sp->ux_errno == 0) + sp->ux_errno = EIO; + } + + switch (scbp->sc_comp_code) { + + case SDI_ASW : /* Job completed normally */ + case SDI_LINKF0 : /* Linked command done without flag */ + case SDI_LINKF1 : /* Linked command done with flag */ + + sp->error = SCG_NO_ERROR; + break; + + case SDI_CKSTAT : /* Check the status byte */ + + sp->error = SCG_NO_ERROR; + break; + + case SDI_NOALLOC : /* This block is not allocated */ + case SDI_NOTEQ : /* Addressed device not present */ + case SDI_OOS : /* Device is out of service */ + case SDI_NOSELE : /* The SCSI bus select failed */ + case SDI_SBRESC : /* SCSI bus reservation conflict */ + + sp->error = SCG_FATAL; + if (sp->ux_errno == 0) + sp->ux_errno = EIO; + break; + + case SDI_QFLUSH : /* Job was flushed */ + case SDI_ABORT : /* Command was aborted */ + case SDI_RESET : /* Reset was detected on the bus */ + case SDI_CRESET : /* Reset was caused by this unit */ + case SDI_V2PERR : /* vtop failed */ + case SDI_HAERR : /* Host adapter error */ + case SDI_MEMERR : /* Memory fault */ + case SDI_SBUSER : /* SCSI bus error */ + case SDI_SCBERR : /* SCB error */ + case SDI_MISMAT : /* parameter mismatch */ + + case SDI_PROGRES : /* Job in progress */ + case SDI_UNUSED : /* Job not in use */ + + case SDI_ONEIC : /* More than one immediate request */ + case SDI_SFBERR : /* SFB error */ + case SDI_TCERR : /* Target protocol error detected */ + default: + sp->error = SCG_RETRYABLE; + if (sp->ux_errno == 0) + sp->ux_errno = EIO; + break; + + case SDI_TIME : /* Job timed out */ + case SDI_TIME_NOABORT : /* Job timed out, but could not be aborted */ + + sp->error = SCG_TIMEOUT; + if (sp->ux_errno == 0) + sp->ux_errno = EIO; + break; + } + return (0); +} + + +static int +do_usal_sense(SCSI *usalp, struct usal_cmd *sp) +{ + int ret; + struct usal_cmd s_cmd; + + memset((caddr_t)&s_cmd, 0, sizeof (s_cmd)); + + s_cmd.addr = (caddr_t) sp->u_sense.cmd_sense; + s_cmd.size = sp->sense_len; + s_cmd.flags = SCG_RECV_DATA|SCG_DISRE_ENA; + s_cmd.cdb_len = SC_G0_CDBLEN; + s_cmd.sense_len = CCS_SENSE_LEN; + + s_cmd.cdb.g0_cdb.cmd = SC_REQUEST_SENSE; + s_cmd.cdb.g0_cdb.lun = sp->cdb.g0_cdb.lun; + s_cmd.cdb.g0_cdb.count = sp->sense_len; + + ret = do_usal_cmd(usalp, &s_cmd); + + if (ret < 0) + return (ret); + + sp->sense_count = sp->sense_len - s_cmd.resid; + return (ret); +} + +static int +usalo_send(SCSI *usalp) +{ + struct usal_cmd *sp = usalp->scmd; + int ret; + + if (usalp->fd < 0) { + sp->error = SCG_FATAL; + return (0); + } + + ret = do_usal_cmd(usalp, sp); + if (ret < 0) + return (ret); + + if (sp->u_scb.cmd_scb[0] & S_CKCON) + ret = do_usal_sense(usalp, sp); + + return (ret); +} + +#define sense u_sense.Sense +#undef SC_PARITY +#define SC_PARITY 0x09 +#define scb u_scb.Scb + +/*--------------------------------------------------------------------------*/ +#include <unixstd.h> +#include <waitdefs.h> +/* + * Simplified version of popen() + * This version of popen() is not usable more than once at a time. + * Needed because /etc/scsi/pdiconfig will not work if euid != uid + */ +static pid_t po_pid; + +static FILE * +xpopen(char *cmd, char *type) +{ + FILE *ret; + FILE *pp[2]; + + if (po_pid != 0) + return ((FILE *)NULL); + + if (*type != 'r') + return ((FILE *)NULL); + + if (fpipe(pp) == 0) + return ((FILE *)NULL); + + + if ((po_pid = fork()) == 0) { + setuid(0); + + fclose(pp[0]); + (void) rols_fexecl("/bin/sh", stdin, pp[1], stderr, + "sh", "-c", cmd, (char *)0); + _exit(1); + } + fclose(pp[1]); + + if (po_pid == (pid_t)-1) { + fclose(pp[0]); + return ((FILE *)NULL); + } + return (pp[0]); +} + +static int +xpclose(FILE *f) +{ + int ret = 0; + + if (po_pid == 0) + return (-1); + + fclose(f); + + if (waitpid(po_pid, &ret, 0) < 0) + ret = -1; + + po_pid = 0; + return (ret); +} |