exFAT file system implementation library.
Free exFAT implementation.
- Copyright (C) 2010-2016 Andrew Nayenko
+ Copyright (C) 2010-2017 Andrew Nayenko
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
if (CLUSTER_INVALID(cluster))
{
exfat_error("invalid cluster 0x%x while reading", cluster);
- return -1;
+ return -EIO;
}
loffset = offset % CLUSTER_SIZE(*ef->sb);
if (CLUSTER_INVALID(cluster))
{
exfat_error("invalid cluster 0x%x while reading", cluster);
- return -1;
+ return -EIO;
}
lsize = MIN(CLUSTER_SIZE(*ef->sb) - loffset, remainder);
if (exfat_pread(ef->dev, bufp, lsize,
exfat_c2o(ef, cluster) + loffset) < 0)
{
exfat_error("failed to read cluster %#x", cluster);
- return -1;
+ return -EIO;
}
bufp += lsize;
loffset = 0;
remainder -= lsize;
cluster = exfat_next_cluster(ef, node, cluster);
}
- if (!ef->ro && !ef->noatime)
+ if (!(node->attrib & EXFAT_ATTRIB_DIR) && !ef->ro && !ef->noatime)
exfat_update_atime(node);
return MIN(size, node->size - offset) - remainder;
}
ssize_t exfat_generic_pwrite(struct exfat* ef, struct exfat_node* node,
const void* buffer, size_t size, off_t offset)
{
+ int rc;
cluster_t cluster;
const char* bufp = buffer;
off_t lsize, loffset, remainder;
if (offset > node->size)
- if (exfat_truncate(ef, node, offset, true) != 0)
- return -1;
+ {
+ rc = exfat_truncate(ef, node, offset, true);
+ if (rc != 0)
+ return rc;
+ }
if (offset + size > node->size)
- if (exfat_truncate(ef, node, offset + size, false) != 0)
- return -1;
+ {
+ rc = exfat_truncate(ef, node, offset + size, false);
+ if (rc != 0)
+ return rc;
+ }
if (size == 0)
return 0;
if (CLUSTER_INVALID(cluster))
{
exfat_error("invalid cluster 0x%x while writing", cluster);
- return -1;
+ return -EIO;
}
loffset = offset % CLUSTER_SIZE(*ef->sb);
if (CLUSTER_INVALID(cluster))
{
exfat_error("invalid cluster 0x%x while writing", cluster);
- return -1;
+ return -EIO;
}
lsize = MIN(CLUSTER_SIZE(*ef->sb) - loffset, remainder);
if (exfat_pwrite(ef->dev, bufp, lsize,
exfat_c2o(ef, cluster) + loffset) < 0)
{
exfat_error("failed to write cluster %#x", cluster);
- return -1;
+ return -EIO;
}
bufp += lsize;
loffset = 0;
remainder -= lsize;
cluster = exfat_next_cluster(ef, node, cluster);
}
- exfat_update_mtime(node);
+ if (!(node->attrib & EXFAT_ATTRIB_DIR))
+ /* directory's mtime should be updated by the caller only when it
+ creates or removes something in this directory */
+ exfat_update_mtime(node);
return size - remainder;
}