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  • Committer: Bazaar Package Importer
  • Author(s): Adam Cécile (Le_Vert)
  • Date: 2006-11-24 00:33:43 UTC
  • mto: This revision was merged to the branch mainline in revision 4.
  • Revision ID: james.westby@ubuntu.com-20061124003343-9ag45l8hiuz69nkd
Tags: upstream-0.0.0+20061031
Import upstream version 0.0.0+20061031

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libntfs-3g/device.c
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/**
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 * device.c - Low level device io functions. Part of the Linux-NTFS project.
 
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 * device.c - Low level device io functions. Originated from the Linux-NTFS project.
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 *
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 * Copyright (c) 2004-2006 Anton Altaparmakov
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 * Copyright (c) 2004-2006 Szabolcs Szakacsits
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program (in the main directory of the Linux-NTFS
 
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 * along with this program (in the main directory of the NTFS-3G
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 * distribution in the file COPYING); if not, write to the Free Software
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 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
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s64 ntfs_pwrite(struct ntfs_device *dev, const s64 pos, s64 count,
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                const void *b)
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{
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        s64 written, total;
 
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        s64 written, total, ret = -1;
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        struct ntfs_device_operations *dops;
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        ntfs_log_trace("Entering for pos 0x%llx, count 0x%llx.\n", pos, count);
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        if (!b || count < 0 || pos < 0) {
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                errno = EINVAL;
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                return -1;
 
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                goto out;
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        }
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        if (!count)
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                return 0;
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        if (NDevReadOnly(dev)) {
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                errno = EROFS;
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                return -1;
 
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                goto out;
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        }
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        dops = dev->d_ops;
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        /* Locate to position. */
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        if (dops->seek(dev, pos, SEEK_SET) == (off_t)-1) {
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                ntfs_log_perror("ntfs_pwrite: seek to 0x%llx returned error",
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                                pos);
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                return -1;
 
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                goto out;
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        }
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        NDevSetDirty(dev);
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        /* Write the data. */
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        for (total = 0; count; count -= written, total += written) {
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                written = dops->write(dev, (const char*)b + total, count);
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                /* If everything ok, continue. */
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                if (!written || total)
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                        break;
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                /* Nothing written and error, return error status. */
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                return written;
 
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                total = written;
 
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                break;
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        }
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        /* Finally, return the number of bytes written. */
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        return total;
 
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        ret = total;
 
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out:    
 
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        return ret;
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}
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/**