/* XXX: (dgc) Propagate errors, only exit if fail-on-error flag set */
int
libxfs_device_zero(struct xfs_buftarg *btp, xfs_daddr_t start, uint len)
{
xfs_off_t start_offset, end_offset, offset;
ssize_t zsize, bytes;
char *z;
int fd;
zsize = min(BDSTRAT_SIZE, BBTOB(len));
if ((z = memalign(libxfs_device_alignment(), zsize)) == NULL) {
fprintf(stderr,
_("%s: %s can't memalign %d bytes: %s\n"),
progname, __FUNCTION__, (int)zsize, strerror(errno));
exit(1);
}
memset(z, 0, zsize);
fd = libxfs_device_to_fd(btp->dev);
start_offset = LIBXFS_BBTOOFF64(start);
if ((lseek64(fd, start_offset, SEEK_SET)) < 0) {
fprintf(stderr, _("%s: %s seek to offset %llu failed: %s\n"),
progname, __FUNCTION__,
(unsigned long long)start_offset, strerror(errno));
exit(1);
}
end_offset = LIBXFS_BBTOOFF64(start + len) - start_offset;
for (offset = 0; offset < end_offset; ) {
bytes = min((ssize_t)(end_offset - offset), zsize);
if ((bytes = write(fd, z, bytes)) < 0) {
fprintf(stderr, _("%s: %s write failed: %s\n"),
progname, __FUNCTION__, strerror(errno));
exit(1);
} else if (bytes == 0) {
fprintf(stderr, _("%s: %s not progressing?\n"),
progname, __FUNCTION__);
exit(1);
}
offset += bytes;
}
free(z);
return 0;
}
/*
* libxfs initialization.
* Caller gets a 0 on failure (and we print a message), 1 on success.
*/
int
libxfs_init(libxfs_init_t *a)
{
char *blockfile;
char curdir[MAXPATHLEN];
char *dname;
char dpath[25];
int fd;
char *logname;
char logpath[25];
int needcd;
char *rawfile;
char *rtname;
char rtpath[25];
int rval = 0;
int flags;
dpath[0] = logpath[0] = rtpath[0] = '\0';
dname = a->dname;
logname = a->logname;
rtname = a->rtname;
a->dfd = a->logfd = a->rtfd = -1;
a->ddev = a->logdev = a->rtdev = 0;
a->dbsize = a->lbsize = a->rtbsize = 0;
a->dsize = a->logBBsize = a->logBBstart = a->rtsize = 0;
(void)getcwd(curdir,MAXPATHLEN);
needcd = 0;
fd = -1;
flags = (a->isreadonly | a->isdirect);
radix_tree_init();
if (a->volname) {
if(!check_open(a->volname,flags,&rawfile,&blockfile))
goto done;
needcd = 1;
fd = open(rawfile, O_RDONLY);
dname = a->dname = a->volname;
a->volname = NULL;
}
if (dname) {
if (dname[0] != '/' && needcd)
chdir(curdir);
if (a->disfile) {
a->ddev= libxfs_device_open(dname, a->dcreat, flags,
a->setblksize);
a->dfd = libxfs_device_to_fd(a->ddev);
} else {
if (!check_open(dname, flags, &rawfile, &blockfile))
goto done;
a->ddev = libxfs_device_open(rawfile,
a->dcreat, flags, a->setblksize);
a->dfd = libxfs_device_to_fd(a->ddev);
platform_findsizes(rawfile, a->dfd,
&a->dsize, &a->dbsize);
}
needcd = 1;
} else
a->dsize = 0;
if (logname) {
if (logname[0] != '/' && needcd)
chdir(curdir);
if (a->lisfile) {
a->logdev = libxfs_device_open(logname,
a->lcreat, flags, a->setblksize);
a->logfd = libxfs_device_to_fd(a->logdev);
} else {
if (!check_open(logname, flags, &rawfile, &blockfile))
goto done;
a->logdev = libxfs_device_open(rawfile,
a->lcreat, flags, a->setblksize);
a->logfd = libxfs_device_to_fd(a->logdev);
platform_findsizes(rawfile, a->logfd,
&a->logBBsize, &a->lbsize);
}
needcd = 1;
} else
a->logBBsize = 0;
if (rtname) {
if (rtname[0] != '/' && needcd)
chdir(curdir);
if (a->risfile) {
a->rtdev = libxfs_device_open(rtname,
a->rcreat, flags, a->setblksize);
a->rtfd = libxfs_device_to_fd(a->rtdev);
} else {
if (!check_open(rtname, flags, &rawfile, &blockfile))
goto done;
a->rtdev = libxfs_device_open(rawfile,
a->rcreat, flags, a->setblksize);
a->rtfd = libxfs_device_to_fd(a->rtdev);
platform_findsizes(rawfile, a->rtfd,
&a->rtsize, &a->rtbsize);
}
needcd = 1;
} else
a->rtsize = 0;
if (a->dsize < 0) {
fprintf(stderr, _("%s: can't get size for data subvolume\n"),
progname);
goto done;
}
if (a->logBBsize < 0) {
fprintf(stderr, _("%s: can't get size for log subvolume\n"),
progname);
goto done;
}
if (a->rtsize < 0) {
fprintf(stderr, _("%s: can't get size for realtime subvolume\n"),
progname);
goto done;
}
if (needcd)
chdir(curdir);
if (!libxfs_bhash_size)
libxfs_bhash_size = LIBXFS_BHASHSIZE(sbp);
libxfs_bcache = cache_init(a->bcache_flags, libxfs_bhash_size,
&libxfs_bcache_operations);
use_xfs_buf_lock = a->usebuflock;
manage_zones(0);
rval = 1;
done:
if (dpath[0])
unlink(dpath);
if (logpath[0])
unlink(logpath);
if (rtpath[0])
unlink(rtpath);
if (fd >= 0)
close(fd);
if (!rval && a->ddev)
libxfs_device_close(a->ddev);
if (!rval && a->logdev)
libxfs_device_close(a->logdev);
if (!rval && a->rtdev)
libxfs_device_close(a->rtdev);
return rval;
}