diff options
Diffstat (limited to 'exfat/libexfat/io.c')
| -rw-r--r-- | exfat/libexfat/io.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/exfat/libexfat/io.c b/exfat/libexfat/io.c index 7f79d97c0..306c5dd06 100644 --- a/exfat/libexfat/io.c +++ b/exfat/libexfat/io.c @@ -2,11 +2,12 @@ io.c (02.09.09) exFAT file system implementation library. + Free exFAT implementation. Copyright (C) 2010-2013 Andrew Nayenko - This program is free software: you can redistribute it and/or modify + 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 - the Free Software Foundation, either version 3 of the License, or + the Free Software Foundation, either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -14,8 +15,9 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "exfat.h" @@ -280,28 +282,24 @@ ssize_t exfat_write(struct exfat_dev* dev, const void* buffer, size_t size) #endif } -void exfat_pread(struct exfat_dev* dev, void* buffer, size_t size, +ssize_t exfat_pread(struct exfat_dev* dev, void* buffer, size_t size, off64_t offset) { #ifdef USE_UBLIO - if (ublio_pread(dev->ufh, buffer, size, offset) != size) + return ublio_pread(dev->ufh, buffer, size, offset); #else - if (pread64(dev->fd, buffer, size, offset) != size) + return pread64(dev->fd, buffer, size, offset); #endif - exfat_bug("failed to read %zu bytes from file at %"PRIu64, size, - (uint64_t) offset); } -void exfat_pwrite(struct exfat_dev* dev, const void* buffer, size_t size, +ssize_t exfat_pwrite(struct exfat_dev* dev, const void* buffer, size_t size, off64_t offset) { #ifdef USE_UBLIO - if (ublio_pwrite(dev->ufh, buffer, size, offset) != size) + return ublio_pwrite(dev->ufh, buffer, size, offset); #else - if (pwrite64(dev->fd, buffer, size, offset) != size) + return pwrite64(dev->fd, buffer, size, offset); #endif - exfat_bug("failed to write %zu bytes to file at %"PRIu64, size, - (uint64_t) offset); } ssize_t exfat_generic_pread(const struct exfat* ef, struct exfat_node* node, @@ -333,7 +331,12 @@ ssize_t exfat_generic_pread(const struct exfat* ef, struct exfat_node* node, return -1; } lsize = MIN(CLUSTER_SIZE(*ef->sb) - loffset, remainder); - exfat_pread(ef->dev, bufp, lsize, exfat_c2o(ef, cluster) + loffset); + if (exfat_pread(ef->dev, bufp, lsize, + exfat_c2o(ef, cluster) + loffset) < 0) + { + exfat_error("failed to read cluster %#x", cluster); + return -1; + } bufp += lsize; loffset = 0; remainder -= lsize; @@ -377,7 +380,12 @@ ssize_t exfat_generic_pwrite(struct exfat* ef, struct exfat_node* node, return -1; } lsize = MIN(CLUSTER_SIZE(*ef->sb) - loffset, remainder); - exfat_pwrite(ef->dev, bufp, lsize, exfat_c2o(ef, cluster) + loffset); + if (exfat_pwrite(ef->dev, bufp, lsize, + exfat_c2o(ef, cluster) + loffset) < 0) + { + exfat_error("failed to write cluster %#x", cluster); + return -1; + } bufp += lsize; loffset = 0; remainder -= lsize; |