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Implemented drive role 3, sequential write-only stdio drives (e.g. stdout)

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This commit is contained in:
Thomas Schmitt
2007-09-24 13:54:52 +00:00
parent 83fe9f3621
commit 5e995c9cd0
7 changed files with 149 additions and 54 deletions
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50
libburn/write.c
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@ -951,10 +951,11 @@ int burn_precheck_write(struct burn_write_opts *o, struct burn_disc *disc,
if (o->start_byte >= 0 && (o->start_byte % 32768))
strcat(reasons,
"write start address not properly aligned to 32k, ");
} else if (d->current_profile == 0x11 || d->current_profile == 0x14 ||
} else if (d->drive_role == 3 ||
d->current_profile == 0x11 || d->current_profile == 0x14 ||
d->current_profile == 0x15 ||
d->current_profile == 0x1b || d->current_profile == 0x2b ) {
/* DVD-R* Sequential , DVD+R[/DL] */
/* DVD-R* Sequential , DVD+R[/DL] , sequential stdio "drive" */
if (o->start_byte >= 0)
strcat(reasons, "write start address not supported, ");
} else {
@ -1624,26 +1625,33 @@ int burn_stdio_open_write(struct burn_drive *d, off_t start_byte,
if (d->devname[0] == 0) /* null drives should not come here */
return -1;
fd = open(d->devname, mode, S_IRUSR | S_IWUSR);
fd = burn_drive__fd_from_special_adr(d->devname);
if (fd >= 0)
fd = dup(fd); /* check validity and make closeable */
else
fd = open(d->devname, mode, S_IRUSR | S_IWUSR);
if (fd == -1) {
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020005,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
"Failed to open device (a pseudo-drive)", errno, 0);
d->cancel = 1;
return -1;
}
if (start_byte < 0)
start_byte = 0;
if (lseek(fd, start_byte, SEEK_SET)==-1) {
sprintf(msg, "Cannot address start byte %.f",
(double) start_byte);
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020147,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
msg, errno, 0);
close(fd);
fd = -1;
}
if (d->drive_role == 2)
if (lseek(fd, start_byte, SEEK_SET)==-1) {
sprintf(msg, "Cannot address start byte %.f",
(double) start_byte);
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020147,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
msg, errno, 0);
close(fd);
d->cancel = 1;
fd = -1;
}
d->nwa = start_byte / sector_size;
return fd;
}
@ -1761,6 +1769,8 @@ int burn_stdio_sync_cache(int fd, struct burn_drive *d, int flag)
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_ZERO,
"syncing cache (stdio fsync)", 0, 0);
if (fsync(fd) != 0) {
if (errno == EINVAL) /* E.g. /dev/null cannot fsync */
return 1;
libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020148,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
@ -1967,10 +1977,10 @@ int burn_stdio_write_sync(struct burn_write_opts *o,
d->progress.sectors = 0;
ret = 1;
ex:;
if (d->stdio_fd != -1) {
close (d->stdio_fd);
d->stdio_fd = -1;
}
if (d->stdio_fd >= 0)
close(d->stdio_fd);
d->stdio_fd = -1;
/* update media state records */
burn_drive_mark_unready(d);
@ -2203,7 +2213,7 @@ int burn_random_access_write(struct burn_drive *d, off_t byte_address,
return 0;
}
if(d->drive_role != 1)
if(d->drive_role == 2)
alignment = 2 * 1024;
if (d->current_profile == 0x12) /* DVD-RAM */
alignment = 2 * 1024;
@ -2277,7 +2287,7 @@ int burn_random_access_write(struct burn_drive *d, off_t byte_address,
}
if (err == BE_CANCELLED) {
d->busy = BURN_DRIVE_IDLE;
if(fd != -1)
if(fd >= 0)
close(fd);
return (-(start * 2048 - byte_address));
}
@ -2290,7 +2300,7 @@ int burn_random_access_write(struct burn_drive *d, off_t byte_address,
burn_stdio_sync_cache(fd, d, 0);
}
if(fd != -1)
if(fd >= 0)
close(fd);
d->buffer = NULL;
d->busy = BURN_DRIVE_IDLE;