diff options
Diffstat (limited to 'exfat/libexfat/mount.c')
| -rw-r--r-- | exfat/libexfat/mount.c | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/exfat/libexfat/mount.c b/exfat/libexfat/mount.c index 4daf12668..928c561dc 100644 --- a/exfat/libexfat/mount.c +++ b/exfat/libexfat/mount.c @@ -2,11 +2,12 @@ mount.c (22.10.09) 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" @@ -95,15 +97,27 @@ static int verify_vbr_checksum(struct exfat_dev* dev, void* sector, uint32_t vbr_checksum; int i; - exfat_pread(dev, sector, sector_size, 0); + if (exfat_pread(dev, sector, sector_size, 0) < 0) + { + exfat_error("failed to read boot sector"); + return 1; + } vbr_checksum = exfat_vbr_start_checksum(sector, sector_size); for (i = 1; i < 11; i++) { - exfat_pread(dev, sector, sector_size, i * sector_size); + if (exfat_pread(dev, sector, sector_size, i * sector_size) < 0) + { + exfat_error("failed to read VBR sector"); + return 1; + } vbr_checksum = exfat_vbr_add_checksum(sector, sector_size, vbr_checksum); } - exfat_pread(dev, sector, sector_size, i * sector_size); + if (exfat_pread(dev, sector, sector_size, i * sector_size) < 0) + { + exfat_error("failed to read VBR checksum sector"); + return 1; + } for (i = 0; i < sector_size / sizeof(vbr_checksum); i++) if (le32_to_cpu(((const le32_t*) sector)[i]) != vbr_checksum) { @@ -116,7 +130,11 @@ static int verify_vbr_checksum(struct exfat_dev* dev, void* sector, static int commit_super_block(const struct exfat* ef) { - exfat_pwrite(ef->dev, ef->sb, sizeof(struct exfat_super_block), 0); + if (exfat_pwrite(ef->dev, ef->sb, sizeof(struct exfat_super_block), 0) < 0) + { + exfat_error("failed to write super block"); + return 1; + } return exfat_fsync(ef->dev); } @@ -169,7 +187,13 @@ int exfat_mount(struct exfat* ef, const char* spec, const char* options) } memset(ef->sb, 0, sizeof(struct exfat_super_block)); - exfat_pread(ef->dev, ef->sb, sizeof(struct exfat_super_block), 0); + if (exfat_pread(ef->dev, ef->sb, sizeof(struct exfat_super_block), 0) < 0) + { + exfat_close(ef->dev); + free(ef->sb); + exfat_error("failed to read boot sector"); + return -EIO; + } if (memcmp(ef->sb->oem_name, "EXFAT ", 8) != 0) { exfat_close(ef->dev); |