本文整理汇总了C++中DEVICE::clrerror方法的典型用法代码示例。如果您正苦于以下问题：C++ DEVICE::clrerror方法的具体用法？C++ DEVICE::clrerror怎么用？C++ DEVICE::clrerror使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DEVICE的用法示例。
在下文中一共展示了DEVICE::clrerror方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: write_ansi_ibm_labels
/*
* Write an ANSI or IBM 80 character tape label
* Type determines whether we are writing HDR, EOF, or EOV labels
* Assume we are positioned to write the labels
* Returns: true of OK
* false if error
*/
bool write_ansi_ibm_labels(DCR *dcr, int type, const char *VolName)
{
DEVICE *dev = dcr->dev;
JCR *jcr = dcr->jcr;
char ansi_volname[7]; /* 6 char + \0 */
char label[80]; /* tape label */
char date[20]; /* ansi date buffer */
time_t now;
int len, stat, label_type;
/*
* If the Device requires a specific label type use it,
* otherwise, use the type requested by the Director
*/
if (dcr->device->label_type != B_BACULA_LABEL) {
label_type = dcr->device->label_type; /* force label type */
} else {
label_type = dcr->VolCatInfo.LabelType; /* accept Dir type */
}
switch (label_type) {
case B_BACULA_LABEL:
return true;
case B_ANSI_LABEL:
case B_IBM_LABEL:
ser_declare;
Dmsg1(100, "Write ANSI label type=%d\n", label_type);
len = strlen(VolName);
if (len > 6) {
Jmsg1(jcr, M_FATAL, 0, _("ANSI Volume label name \"%s\" longer than 6 chars.\n"),
VolName);
return false;
}
/* ANSI labels have 6 characters, and are padded with spaces
* 'vol1\0' => 'vol1 \0'
*/
strcpy(ansi_volname, VolName);
for(int i=len; i < 6; i++) {
ansi_volname[i]=' ';
}
ansi_volname[6]='\0'; /* only for debug */
if (type == ANSI_VOL_LABEL) {
ser_begin(label, sizeof(label));
ser_bytes("VOL1", 4);
ser_bytes(ansi_volname, 6);
/* Write VOL1 label */
if (label_type == B_IBM_LABEL) {
ascii_to_ebcdic(label, label, sizeof(label));
} else {
label[79] = '3'; /* ANSI label flag */
}
stat = dev->write(label, sizeof(label));
if (stat != sizeof(label)) {
berrno be;
Jmsg1(jcr, M_FATAL, 0, _("Could not write ANSI VOL1 label. ERR=%s\n"),
be.bstrerror());
return false;
}
}
/* Now construct HDR1 label */
memset(label, ' ', sizeof(label));
ser_begin(label, sizeof(label));
ser_bytes(labels[type], 3);
ser_bytes("1", 1);
ser_bytes("BACULA.DATA", 11); /* Filename field */
ser_begin(&label[21], sizeof(label)-21); /* fileset field */
ser_bytes(ansi_volname, 6); /* write Vol Ser No. */
ser_begin(&label[27], sizeof(label)-27);
ser_bytes("00010001000100", 14); /* File section, File seq no, Generation no */
now = time(NULL);
ser_bytes(ansi_date(now, date), 6); /* current date */
ser_bytes(ansi_date(now - 24 * 3600, date), 6); /* created yesterday */
ser_bytes(" 000000Bacula ", 27);
/* Write HDR1 label */
if (label_type == B_IBM_LABEL) {
ascii_to_ebcdic(label, label, sizeof(label));
}
/*
* This could come at the end of a tape, ignore
* EOT errors.
*/
stat = dev->write(label, sizeof(label));
if (stat != sizeof(label)) {
berrno be;
if (stat == -1) {
dev->clrerror(-1);
if (dev->dev_errno == 0) {
dev->dev_errno = ENOSPC; /* out of space */
}
if (dev->dev_errno != ENOSPC) {
//.........这里部分代码省略.........
示例2: set_os_device_parameters
void set_os_device_parameters(DCR *dcr)
{
DEVICE *dev = dcr->dev;
if (strcmp(dev->dev_name, "/dev/null") == 0) {
return; /* no use trying to set /dev/null */
}
#if defined(HAVE_LINUX_OS) || defined(HAVE_WIN32)
struct mtop mt_com;
Dmsg0(100, "In set_os_device_parameters\n");
#if defined(MTSETBLK)
if (dev->min_block_size == dev->max_block_size &&
dev->min_block_size == 0) { /* variable block mode */
mt_com.mt_op = MTSETBLK;
mt_com.mt_count = 0;
Dmsg0(100, "Set block size to zero\n");
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSETBLK);
}
}
#endif
#if defined(MTSETDRVBUFFER)
if (getuid() == 0) { /* Only root can do this */
mt_com.mt_op = MTSETDRVBUFFER;
mt_com.mt_count = MT_ST_CLEARBOOLEANS;
if (!dev->has_cap(CAP_TWOEOF)) {
mt_com.mt_count |= MT_ST_TWO_FM;
}
if (dev->has_cap(CAP_EOM)) {
mt_com.mt_count |= MT_ST_FAST_MTEOM;
}
Dmsg0(100, "MTSETDRVBUFFER\n");
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSETDRVBUFFER);
}
}
#endif
return;
#endif
#ifdef HAVE_NETBSD_OS
struct mtop mt_com;
if (dev->min_block_size == dev->max_block_size &&
dev->min_block_size == 0) { /* variable block mode */
mt_com.mt_op = MTSETBSIZ;
mt_com.mt_count = 0;
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSETBSIZ);
}
/* Get notified at logical end of tape */
mt_com.mt_op = MTEWARN;
mt_com.mt_count = 1;
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTEWARN);
}
}
return;
#endif
#if HAVE_FREEBSD_OS || HAVE_OPENBSD_OS
struct mtop mt_com;
if (dev->min_block_size == dev->max_block_size &&
dev->min_block_size == 0) { /* variable block mode */
mt_com.mt_op = MTSETBSIZ;
mt_com.mt_count = 0;
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSETBSIZ);
}
}
#if defined(MTIOCSETEOTMODEL)
uint32_t neof;
if (dev->has_cap(CAP_TWOEOF)) {
neof = 2;
} else {
neof = 1;
}
if (dev->d_ioctl(dev->fd(), MTIOCSETEOTMODEL, (caddr_t)&neof) < 0) {
berrno be;
dev->dev_errno = errno; /* save errno */
Mmsg2(dev->errmsg, _("Unable to set eotmodel on device %s: ERR=%s\n"),
dev->print_name(), be.bstrerror(dev->dev_errno));
Jmsg(dcr->jcr, M_FATAL, 0, dev->errmsg);
}
#endif
return;
#endif
#ifdef HAVE_SUN_OS
struct mtop mt_com;
if (dev->min_block_size == dev->max_block_size &&
dev->min_block_size == 0) { /* variable block mode */
mt_com.mt_op = MTSRSZ;
mt_com.mt_count = 0;
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSRSZ);
}
}
return;
//.........这里部分代码省略.........