summaryrefslogtreecommitdiffstats
path: root/exfat/libexfat
diff options
context:
space:
mode:
authorDees Troy <dees_troy@teamw.in>2013-08-28 18:00:58 +0200
committerGerrit Code Review <gerrit@198.50.184.117>2013-08-28 18:00:58 +0200
commitde307148cfb7f1f37df875f0451f56488b8f68b2 (patch)
tree7342cbe1d30c701e331a9bb11705044f1a3f20b7 /exfat/libexfat
parentignore lost+found in all the places (diff)
parentupdate exfat to latest commits for io issues (diff)
downloadandroid_bootable_recovery-de307148cfb7f1f37df875f0451f56488b8f68b2.tar
android_bootable_recovery-de307148cfb7f1f37df875f0451f56488b8f68b2.tar.gz
android_bootable_recovery-de307148cfb7f1f37df875f0451f56488b8f68b2.tar.bz2
android_bootable_recovery-de307148cfb7f1f37df875f0451f56488b8f68b2.tar.lz
android_bootable_recovery-de307148cfb7f1f37df875f0451f56488b8f68b2.tar.xz
android_bootable_recovery-de307148cfb7f1f37df875f0451f56488b8f68b2.tar.zst
android_bootable_recovery-de307148cfb7f1f37df875f0451f56488b8f68b2.zip
Diffstat (limited to 'exfat/libexfat')
-rw-r--r--exfat/libexfat/COPYING339
-rw-r--r--exfat/libexfat/byteorder.h11
-rw-r--r--exfat/libexfat/cluster.c100
-rw-r--r--exfat/libexfat/compiler.h62
-rw-r--r--exfat/libexfat/exfat.h43
-rw-r--r--exfat/libexfat/exfatfs.h34
-rw-r--r--exfat/libexfat/io.c40
-rw-r--r--exfat/libexfat/log.c10
-rw-r--r--exfat/libexfat/lookup.c10
-rw-r--r--exfat/libexfat/mount.c42
-rw-r--r--exfat/libexfat/node.c218
-rw-r--r--exfat/libexfat/platform.h79
-rw-r--r--exfat/libexfat/time.c10
-rw-r--r--exfat/libexfat/utf.c10
-rw-r--r--exfat/libexfat/utils.c13
-rw-r--r--exfat/libexfat/version.h10
16 files changed, 863 insertions, 168 deletions
diff --git a/exfat/libexfat/COPYING b/exfat/libexfat/COPYING
new file mode 100644
index 000000000..d159169d1
--- /dev/null
+++ b/exfat/libexfat/COPYING
@@ -0,0 +1,339 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ 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 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/exfat/libexfat/byteorder.h b/exfat/libexfat/byteorder.h
index 6792f37c0..10746e1ef 100644
--- a/exfat/libexfat/byteorder.h
+++ b/exfat/libexfat/byteorder.h
@@ -2,11 +2,12 @@
byteorder.h (12.01.10)
Endianness stuff. exFAT uses little-endian byte order.
+ 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.
*/
#ifndef BYTEORDER_H_INCLUDED
@@ -78,7 +80,6 @@
#error No byte order macros available for your platform
#endif
-#define __BYTE_ORDER __LITTLE_ENDIAN
typedef struct { uint16_t __u16; } le16_t;
typedef struct { uint32_t __u32; } le32_t;
typedef struct { uint64_t __u64; } le64_t;
diff --git a/exfat/libexfat/cluster.c b/exfat/libexfat/cluster.c
index d10a5dfe7..2215636c6 100644
--- a/exfat/libexfat/cluster.c
+++ b/exfat/libexfat/cluster.c
@@ -2,11 +2,12 @@
cluster.c (03.09.09)
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,
@@ -14,13 +15,15 @@
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"
#include <errno.h>
#include <string.h>
+#include <inttypes.h>
/*
* Sector to absolute offset.
@@ -80,7 +83,9 @@ cluster_t exfat_next_cluster(const struct exfat* ef,
return cluster + 1;
fat_offset = s2o(ef, le32_to_cpu(ef->sb->fat_sector_start))
+ cluster * sizeof(cluster_t);
- exfat_pread(ef->dev, &next, sizeof(next), fat_offset);
+ /* FIXME handle I/O error */
+ if (exfat_pread(ef->dev, &next, sizeof(next), fat_offset) < 0)
+ exfat_bug("failed to read the next cluster after %#x", cluster);
return le32_to_cpu(next);
}
@@ -106,18 +111,22 @@ cluster_t exfat_advance_cluster(const struct exfat* ef,
return node->fptr_cluster;
}
-static cluster_t find_bit_and_set(uint8_t* bitmap, size_t start, size_t end)
+static cluster_t find_bit_and_set(bitmap_t* bitmap, size_t start, size_t end)
{
- const size_t start_index = start / 8;
- const size_t end_index = DIV_ROUND_UP(end, 8);
+ const size_t start_index = start / sizeof(bitmap_t) / 8;
+ const size_t end_index = DIV_ROUND_UP(end, sizeof(bitmap_t) * 8);
size_t i;
+ size_t start_bitindex;
+ size_t end_bitindex;
size_t c;
for (i = start_index; i < end_index; i++)
{
- if (bitmap[i] == 0xff)
+ if (bitmap[i] == ~((bitmap_t) 0))
continue;
- for (c = MAX(i * 8, start); c < MIN((i + 1) * 8, end); c++)
+ start_bitindex = MAX(i * sizeof(bitmap_t) * 8, start);
+ end_bitindex = MIN((i + 1) * sizeof(bitmap_t) * 8, end);
+ for (c = start_bitindex; c < end_bitindex; c++)
if (BMAP_GET(bitmap, c) == 0)
{
BMAP_SET(bitmap, c);
@@ -127,25 +136,40 @@ static cluster_t find_bit_and_set(uint8_t* bitmap, size_t start, size_t end)
return EXFAT_CLUSTER_END;
}
-void exfat_flush_cmap(struct exfat* ef)
+int exfat_flush(struct exfat* ef)
{
- exfat_pwrite(ef->dev, ef->cmap.chunk, (ef->cmap.chunk_size + 7) / 8,
- exfat_c2o(ef, ef->cmap.start_cluster));
- ef->cmap.dirty = false;
+ if (ef->cmap.dirty)
+ {
+ if (exfat_pwrite(ef->dev, ef->cmap.chunk,
+ BMAP_SIZE(ef->cmap.chunk_size),
+ exfat_c2o(ef, ef->cmap.start_cluster)) < 0)
+ {
+ exfat_error("failed to write clusters bitmap");
+ return -EIO;
+ }
+ ef->cmap.dirty = false;
+ }
+ return 0;
}
-static void set_next_cluster(const struct exfat* ef, bool contiguous,
+static bool set_next_cluster(const struct exfat* ef, bool contiguous,
cluster_t current, cluster_t next)
{
off64_t fat_offset;
le32_t next_le32;
if (contiguous)
- return;
+ return true;
fat_offset = s2o(ef, le32_to_cpu(ef->sb->fat_sector_start))
+ current * sizeof(cluster_t);
next_le32 = cpu_to_le32(next);
- exfat_pwrite(ef->dev, &next_le32, sizeof(next_le32), fat_offset);
+ if (exfat_pwrite(ef->dev, &next_le32, sizeof(next_le32), fat_offset) < 0)
+ {
+ exfat_error("failed to write the next cluster %#x after %#x", next,
+ current);
+ return false;
+ }
+ return true;
}
static cluster_t allocate_cluster(struct exfat* ef, cluster_t hint)
@@ -181,13 +205,15 @@ static void free_cluster(struct exfat* ef, cluster_t cluster)
ef->cmap.dirty = true;
}
-static void make_noncontiguous(const struct exfat* ef, cluster_t first,
+static bool make_noncontiguous(const struct exfat* ef, cluster_t first,
cluster_t last)
{
cluster_t c;
for (c = first; c < last; c++)
- set_next_cluster(ef, false, c, c + 1);
+ if (!set_next_cluster(ef, false, c, c + 1))
+ return false;
+ return true;
}
static int shrink_file(struct exfat* ef, struct exfat_node* node,
@@ -241,16 +267,20 @@ static int grow_file(struct exfat* ef, struct exfat_node* node,
{
/* it's a pity, but we are not able to keep the file contiguous
anymore */
- make_noncontiguous(ef, node->start_cluster, previous);
+ if (!make_noncontiguous(ef, node->start_cluster, previous))
+ return -EIO;
node->flags &= ~EXFAT_ATTRIB_CONTIGUOUS;
node->flags |= EXFAT_ATTRIB_DIRTY;
}
- set_next_cluster(ef, IS_CONTIGUOUS(*node), previous, next);
+ if (!set_next_cluster(ef, IS_CONTIGUOUS(*node), previous, next))
+ return -EIO;
previous = next;
allocated++;
}
- set_next_cluster(ef, IS_CONTIGUOUS(*node), previous, EXFAT_CLUSTER_END);
+ if (!set_next_cluster(ef, IS_CONTIGUOUS(*node), previous,
+ EXFAT_CLUSTER_END))
+ return -EIO;
return 0;
}
@@ -278,7 +308,9 @@ static int shrink_file(struct exfat* ef, struct exfat_node* node,
return -EIO;
}
previous = exfat_next_cluster(ef, node, last);
- set_next_cluster(ef, IS_CONTIGUOUS(*node), last, EXFAT_CLUSTER_END);
+ if (!set_next_cluster(ef, IS_CONTIGUOUS(*node), last,
+ EXFAT_CLUSTER_END))
+ return -EIO;
}
else
{
@@ -298,17 +330,23 @@ static int shrink_file(struct exfat* ef, struct exfat_node* node,
return -EIO;
}
next = exfat_next_cluster(ef, node, previous);
- set_next_cluster(ef, IS_CONTIGUOUS(*node), previous,
- EXFAT_CLUSTER_FREE);
+ if (!set_next_cluster(ef, IS_CONTIGUOUS(*node), previous,
+ EXFAT_CLUSTER_FREE))
+ return -EIO;
free_cluster(ef, previous);
previous = next;
}
return 0;
}
-static void erase_raw(struct exfat* ef, size_t size, off64_t offset)
+static bool erase_raw(struct exfat* ef, size_t size, off64_t offset)
{
- exfat_pwrite(ef->dev, ef->zero_cluster, size, offset);
+ if (exfat_pwrite(ef->dev, ef->zero_cluster, size, offset) < 0)
+ {
+ exfat_error("failed to erase %zu bytes at %"PRId64, size, offset);
+ return false;
+ }
+ return true;
}
static int erase_range(struct exfat* ef, struct exfat_node* node,
@@ -329,8 +367,9 @@ static int erase_range(struct exfat* ef, struct exfat_node* node,
return -EIO;
}
/* erase from the beginning to the closest cluster boundary */
- erase_raw(ef, MIN(cluster_boundary, end) - begin,
- exfat_c2o(ef, cluster) + begin % CLUSTER_SIZE(*ef->sb));
+ if (!erase_raw(ef, MIN(cluster_boundary, end) - begin,
+ exfat_c2o(ef, cluster) + begin % CLUSTER_SIZE(*ef->sb)))
+ return -EIO;
/* erase whole clusters */
while (cluster_boundary < end)
{
@@ -338,7 +377,8 @@ static int erase_range(struct exfat* ef, struct exfat_node* node,
/* the cluster cannot be invalid because we have just allocated it */
if (CLUSTER_INVALID(cluster))
exfat_bug("invalid cluster 0x%x after allocation", cluster);
- erase_raw(ef, CLUSTER_SIZE(*ef->sb), exfat_c2o(ef, cluster));
+ if (!erase_raw(ef, CLUSTER_SIZE(*ef->sb), exfat_c2o(ef, cluster)))
+ return -EIO;
cluster_boundary += CLUSTER_SIZE(*ef->sb);
}
return 0;
diff --git a/exfat/libexfat/compiler.h b/exfat/libexfat/compiler.h
new file mode 100644
index 000000000..6edd8ec7f
--- /dev/null
+++ b/exfat/libexfat/compiler.h
@@ -0,0 +1,62 @@
+/*
+ compiler.h (09.06.13)
+ Compiler-specific definitions. Note that unknown compiler is not a
+ showstopper.
+
+ Free exFAT implementation.
+ Copyright (C) 2010-2013 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
+ 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,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef COMPILER_H_INCLUDED
+#define COMPILER_H_INCLUDED
+
+#if defined(__clang__)
+
+#define PRINTF __attribute__((format(printf, 1, 2)))
+#define NORETURN __attribute__((noreturn))
+#define PACKED __attribute__((packed))
+#if __has_extension(c_static_assert)
+#define USE_C11_STATIC_ASSERT
+#endif
+
+#elif defined(__GNUC__)
+
+#define PRINTF __attribute__((format(printf, 1, 2)))
+#define NORETURN __attribute__((noreturn))
+#define PACKED __attribute__((packed))
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
+#define USE_C11_STATIC_ASSERT
+#endif
+
+#else
+
+#define PRINTF
+#define NORETURN
+#define PACKED
+
+#endif
+
+#ifdef USE_C11_STATIC_ASSERT
+#define STATIC_ASSERT(cond) _Static_assert(cond, #cond)
+#else
+#define CONCAT2(a, b) a ## b
+#define CONCAT1(a, b) CONCAT2(a, b)
+#define STATIC_ASSERT(cond) \
+ extern void CONCAT1(static_assert, __LINE__)(int x[(cond) ? 1 : -1])
+#endif
+
+#endif /* ifndef COMPILER_H_INCLUDED */
diff --git a/exfat/libexfat/exfat.h b/exfat/libexfat/exfat.h
index a6a9f706d..ff58e8414 100644
--- a/exfat/libexfat/exfat.h
+++ b/exfat/libexfat/exfat.h
@@ -3,11 +3,12 @@
Definitions of structures and constants used in exFAT file system
implementation.
+ 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,
@@ -15,8 +16,9 @@
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.
*/
#ifndef EXFAT_H_INCLUDED
@@ -28,6 +30,7 @@
#include <stdbool.h>
#include <sys/stat.h>
#include <sys/types.h>
+#include "compiler.h"
#include "exfatfs.h"
#include "version.h"
@@ -48,12 +51,16 @@
#define ROUND_UP(x, d) (DIV_ROUND_UP(x, d) * (d))
#define UTF8_BYTES(c) ((c) * 6) /* UTF-8 character can occupy up to 6 bytes */
+typedef size_t bitmap_t;
+#define BMAP_SIZE(count) (ROUND_UP(count, sizeof(bitmap_t) * 8) / 8)
+#define BMAP_BLOCK(index) ((index) / sizeof(bitmap_t) / 8)
+#define BMAP_MASK(index) ((bitmap_t) 1 << ((index) % (sizeof(bitmap_t) * 8)))
#define BMAP_GET(bitmap, index) \
- (((uint8_t*) bitmap)[(index) / 8] & (1u << ((index) % 8)))
+ ((bitmap)[BMAP_BLOCK(index)] & BMAP_MASK(index))
#define BMAP_SET(bitmap, index) \
- ((uint8_t*) bitmap)[(index) / 8] |= (1u << ((index) % 8))
+ ((bitmap)[BMAP_BLOCK(index)] |= BMAP_MASK(index))
#define BMAP_CLR(bitmap, index) \
- ((uint8_t*) bitmap)[(index) / 8] &= ~(1u << ((index) % 8))
+ ((bitmap)[BMAP_BLOCK(index)] &= ~BMAP_MASK(index))
struct exfat_node
{
@@ -94,7 +101,7 @@ struct exfat
{
cluster_t start_cluster;
uint32_t size; /* in bits */
- uint8_t* chunk;
+ bitmap_t* chunk;
uint32_t chunk_size; /* in bits */
bool dirty;
}
@@ -123,14 +130,10 @@ struct exfat_human_bytes
extern int exfat_errors;
-void exfat_bug(const char* format, ...)
- __attribute__((format(printf, 1, 2), noreturn));
-void exfat_error(const char* format, ...)
- __attribute__((format(printf, 1, 2)));
-void exfat_warn(const char* format, ...)
- __attribute__((format(printf, 1, 2)));
-void exfat_debug(const char* format, ...)
- __attribute__((format(printf, 1, 2)));
+void exfat_bug(const char* format, ...) PRINTF NORETURN;
+void exfat_error(const char* format, ...) PRINTF;
+void exfat_warn(const char* format, ...) PRINTF;
+void exfat_debug(const char* format, ...) PRINTF;
struct exfat_dev* exfat_open(const char* spec, enum exfat_mode mode);
int exfat_close(struct exfat_dev* dev);
@@ -140,9 +143,9 @@ off64_t exfat_get_size(const struct exfat_dev* dev);
off64_t exfat_seek(struct exfat_dev* dev, off64_t offset, int whence);
ssize_t exfat_read(struct exfat_dev* dev, void* buffer, size_t size);
ssize_t exfat_write(struct exfat_dev* dev, const void* buffer, size_t size);
-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);
-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);
ssize_t exfat_generic_pread(const struct exfat* ef, struct exfat_node* node,
void* buffer, size_t size, off64_t offset);
@@ -163,7 +166,7 @@ cluster_t exfat_next_cluster(const struct exfat* ef,
const struct exfat_node* node, cluster_t cluster);
cluster_t exfat_advance_cluster(const struct exfat* ef,
struct exfat_node* node, uint32_t count);
-void exfat_flush_cmap(struct exfat* ef);
+int exfat_flush(struct exfat* ef);
int exfat_truncate(struct exfat* ef, struct exfat_node* node, uint64_t size,
bool erase);
uint32_t exfat_count_free_clusters(const struct exfat* ef);
@@ -193,7 +196,7 @@ struct exfat_node* exfat_get_node(struct exfat_node* node);
void exfat_put_node(struct exfat* ef, struct exfat_node* node);
int exfat_cache_directory(struct exfat* ef, struct exfat_node* dir);
void exfat_reset_cache(struct exfat* ef);
-void exfat_flush_node(struct exfat* ef, struct exfat_node* node);
+int exfat_flush_node(struct exfat* ef, struct exfat_node* node);
int exfat_unlink(struct exfat* ef, struct exfat_node* node);
int exfat_rmdir(struct exfat* ef, struct exfat_node* node);
int exfat_mknod(struct exfat* ef, const char* path);
diff --git a/exfat/libexfat/exfatfs.h b/exfat/libexfat/exfatfs.h
index 6c58a842a..a436daa63 100644
--- a/exfat/libexfat/exfatfs.h
+++ b/exfat/libexfat/exfatfs.h
@@ -2,11 +2,12 @@
exfatfs.h (29.08.09)
Definitions of structures and constants used in exFAT file system.
+ 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.
*/
#ifndef EXFATFS_H_INCLUDED
@@ -62,7 +64,8 @@ struct exfat_super_block
uint8_t __unused2[397]; /* 0x71 always 0 */
le16_t boot_signature; /* the value of 0xAA55 */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_super_block) == 512);
#define EXFAT_ENTRY_VALID 0x80
#define EXFAT_ENTRY_CONTINUED 0x40
@@ -79,7 +82,8 @@ struct exfat_entry /* common container for all entries */
uint8_t type; /* any of EXFAT_ENTRY_xxx */
uint8_t data[31];
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry) == 32);
#define EXFAT_ENAME_MAX 15
@@ -90,7 +94,8 @@ struct exfat_entry_bitmap /* allocated clusters bitmap */
le32_t start_cluster;
le64_t size; /* in bytes */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_bitmap) == 32);
struct exfat_entry_upcase /* upper case translation table */
{
@@ -101,7 +106,8 @@ struct exfat_entry_upcase /* upper case translation table */
le32_t start_cluster;
le64_t size; /* in bytes */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_upcase) == 32);
struct exfat_entry_label /* volume label */
{
@@ -109,7 +115,8 @@ struct exfat_entry_label /* volume label */
uint8_t length; /* number of characters */
le16_t name[EXFAT_ENAME_MAX]; /* in UTF-16LE */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_label) == 32);
#define EXFAT_ATTRIB_RO 0x01
#define EXFAT_ATTRIB_HIDDEN 0x02
@@ -132,7 +139,8 @@ struct exfat_entry_meta1 /* file or directory info (part 1) */
uint8_t mtime_cs; /* latest modification time in cs */
uint8_t __unknown2[10];
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_meta1) == 32);
#define EXFAT_FLAG_ALWAYS1 (1u << 0)
#define EXFAT_FLAG_CONTIGUOUS (1u << 1)
@@ -150,7 +158,8 @@ struct exfat_entry_meta2 /* file or directory info (part 2) */
le32_t start_cluster;
le64_t size; /* in bytes, equals to real_size */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_meta2) == 32);
struct exfat_entry_name /* file or directory name */
{
@@ -158,6 +167,7 @@ struct exfat_entry_name /* file or directory name */
uint8_t __unknown;
le16_t name[EXFAT_ENAME_MAX]; /* in UTF-16LE */
}
-__attribute__((__packed__));
+PACKED;
+STATIC_ASSERT(sizeof(struct exfat_entry_name) == 32);
#endif /* ifndef EXFATFS_H_INCLUDED */
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;
diff --git a/exfat/libexfat/log.c b/exfat/libexfat/log.c
index 034cc09f4..7e541aafb 100644
--- a/exfat/libexfat/log.c
+++ b/exfat/libexfat/log.c
@@ -2,11 +2,12 @@
log.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"
diff --git a/exfat/libexfat/lookup.c b/exfat/libexfat/lookup.c
index 2e1aa8184..00cd5335e 100644
--- a/exfat/libexfat/lookup.c
+++ b/exfat/libexfat/lookup.c
@@ -2,11 +2,12 @@
lookup.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"
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);
diff --git a/exfat/libexfat/node.c b/exfat/libexfat/node.c
index f89b5731d..56205fced 100644
--- a/exfat/libexfat/node.c
+++ b/exfat/libexfat/node.c
@@ -2,11 +2,12 @@
node.c (09.10.09)
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"
@@ -51,16 +53,18 @@ void exfat_put_node(struct exfat* ef, struct exfat_node* node)
if (node->references == 0)
{
- if (node->flags & EXFAT_ATTRIB_DIRTY)
- exfat_flush_node(ef, node);
+ /* FIXME handle I/O error */
+ if (exfat_flush_node(ef, node) != 0)
+ exfat_bug("node flush failed");
if (node->flags & EXFAT_ATTRIB_UNLINKED)
{
/* free all clusters and node structure itself */
exfat_truncate(ef, node, 0, true);
free(node);
}
- if (ef->cmap.dirty)
- exfat_flush_cmap(ef);
+ /* FIXME handle I/O error */
+ if (exfat_flush(ef) != 0)
+ exfat_bug("flush failed");
}
}
@@ -86,8 +90,12 @@ static int opendir(struct exfat* ef, const struct exfat_node* dir,
exfat_error("out of memory");
return -ENOMEM;
}
- exfat_pread(ef->dev, it->chunk, CLUSTER_SIZE(*ef->sb),
- exfat_c2o(ef, it->cluster));
+ if (exfat_pread(ef->dev, it->chunk, CLUSTER_SIZE(*ef->sb),
+ exfat_c2o(ef, it->cluster)) < 0)
+ {
+ exfat_error("failed to read directory cluster %#x", it->cluster);
+ return -EIO;
+ }
return 0;
}
@@ -119,8 +127,13 @@ static int fetch_next_entry(struct exfat* ef, const struct exfat_node* parent,
it->cluster);
return 1;
}
- exfat_pread(ef->dev, it->chunk, CLUSTER_SIZE(*ef->sb),
- exfat_c2o(ef, it->cluster));
+ if (exfat_pread(ef->dev, it->chunk, CLUSTER_SIZE(*ef->sb),
+ exfat_c2o(ef, it->cluster)) < 0)
+ {
+ exfat_error("failed to read the next directory cluster %#x",
+ it->cluster);
+ return 1;
+ }
}
return 0;
}
@@ -218,6 +231,12 @@ static int readdir(struct exfat* ef, const struct exfat_node* parent,
exfat_error("too few continuations (%hhu)", continuations);
goto error;
}
+ if (continuations > 1 +
+ DIV_ROUND_UP(EXFAT_NAME_MAX, EXFAT_ENAME_MAX))
+ {
+ exfat_error("too many continuations (%hhu)", continuations);
+ goto error;
+ }
reference_checksum = le16_to_cpu(meta1->checksum);
actual_checksum = exfat_start_checksum(meta1);
*node = allocate_node();
@@ -276,7 +295,10 @@ static int readdir(struct exfat* ef, const struct exfat_node* parent,
file_name = (const struct exfat_entry_name*) entry;
actual_checksum = exfat_add_checksum(entry, actual_checksum);
- memcpy(namep, file_name->name, EXFAT_ENAME_MAX * sizeof(le16_t));
+ memcpy(namep, file_name->name,
+ MIN(EXFAT_ENAME_MAX,
+ ((*node)->name + EXFAT_NAME_MAX - namep)) *
+ sizeof(le16_t));
namep += EXFAT_ENAME_MAX;
if (--continuations == 0)
{
@@ -344,8 +366,15 @@ static int readdir(struct exfat* ef, const struct exfat_node* parent,
}
ef->upcase_chars = le64_to_cpu(upcase->size) / sizeof(le16_t);
- exfat_pread(ef->dev, ef->upcase, le64_to_cpu(upcase->size),
- exfat_c2o(ef, le32_to_cpu(upcase->start_cluster)));
+ if (exfat_pread(ef->dev, ef->upcase, le64_to_cpu(upcase->size),
+ exfat_c2o(ef, le32_to_cpu(upcase->start_cluster))) < 0)
+ {
+ exfat_error("failed to read upper case table "
+ "(%"PRIu64" bytes starting at cluster %#x)",
+ le64_to_cpu(upcase->size),
+ le32_to_cpu(upcase->start_cluster));
+ goto error;
+ }
break;
case EXFAT_ENTRY_BITMAP:
@@ -359,16 +388,17 @@ static int readdir(struct exfat* ef, const struct exfat_node* parent,
}
ef->cmap.size = le32_to_cpu(ef->sb->cluster_count) -
EXFAT_FIRST_DATA_CLUSTER;
- if (le64_to_cpu(bitmap->size) < (ef->cmap.size + 7) / 8)
+ if (le64_to_cpu(bitmap->size) < DIV_ROUND_UP(ef->cmap.size, 8))
{
exfat_error("invalid clusters bitmap size: %"PRIu64
" (expected at least %u)",
- le64_to_cpu(bitmap->size), (ef->cmap.size + 7) / 8);
+ le64_to_cpu(bitmap->size),
+ DIV_ROUND_UP(ef->cmap.size, 8));
goto error;
}
/* FIXME bitmap can be rather big, up to 512 MB */
ef->cmap.chunk_size = ef->cmap.size;
- ef->cmap.chunk = malloc(le64_to_cpu(bitmap->size));
+ ef->cmap.chunk = malloc(BMAP_SIZE(ef->cmap.chunk_size));
if (ef->cmap.chunk == NULL)
{
exfat_error("failed to allocate clusters bitmap chunk "
@@ -377,8 +407,15 @@ static int readdir(struct exfat* ef, const struct exfat_node* parent,
goto error;
}
- exfat_pread(ef->dev, ef->cmap.chunk, le64_to_cpu(bitmap->size),
- exfat_c2o(ef, ef->cmap.start_cluster));
+ if (exfat_pread(ef->dev, ef->cmap.chunk,
+ BMAP_SIZE(ef->cmap.chunk_size),
+ exfat_c2o(ef, ef->cmap.start_cluster)) < 0)
+ {
+ exfat_error("failed to read clusters bitmap "
+ "(%"PRIu64" bytes starting at cluster %#x)",
+ le64_to_cpu(bitmap->size), ef->cmap.start_cluster);
+ goto error;
+ }
break;
case EXFAT_ENTRY_LABEL:
@@ -516,7 +553,7 @@ static void next_entry(struct exfat* ef, const struct exfat_node* parent,
*cluster = exfat_next_cluster(ef, parent, *cluster);
}
-void exfat_flush_node(struct exfat* ef, struct exfat_node* node)
+int exfat_flush_node(struct exfat* ef, struct exfat_node* node)
{
cluster_t cluster;
off64_t offset;
@@ -524,11 +561,14 @@ void exfat_flush_node(struct exfat* ef, struct exfat_node* node)
struct exfat_entry_meta1 meta1;
struct exfat_entry_meta2 meta2;
+ if (!(node->flags & EXFAT_ATTRIB_DIRTY))
+ return 0; /* no need to flush */
+
if (ef->ro)
exfat_bug("unable to flush node to read-only FS");
if (node->parent == NULL)
- return; /* do not flush unlinked node */
+ return 0; /* do not flush unlinked node */
cluster = node->entry_cluster;
offset = node->entry_offset;
@@ -536,14 +576,22 @@ void exfat_flush_node(struct exfat* ef, struct exfat_node* node)
next_entry(ef, node->parent, &cluster, &offset);
meta2_offset = co2o(ef, cluster, offset);
- exfat_pread(ef->dev, &meta1, sizeof(meta1), meta1_offset);
+ if (exfat_pread(ef->dev, &meta1, sizeof(meta1), meta1_offset) < 0)
+ {
+ exfat_error("failed to read meta1 entry on flush");
+ return -EIO;
+ }
if (meta1.type != EXFAT_ENTRY_FILE)
exfat_bug("invalid type of meta1: 0x%hhx", meta1.type);
meta1.attrib = cpu_to_le16(node->flags);
exfat_unix2exfat(node->mtime, &meta1.mdate, &meta1.mtime, &meta1.mtime_cs);
exfat_unix2exfat(node->atime, &meta1.adate, &meta1.atime, NULL);
- exfat_pread(ef->dev, &meta2, sizeof(meta2), meta2_offset);
+ if (exfat_pread(ef->dev, &meta2, sizeof(meta2), meta2_offset) < 0)
+ {
+ exfat_error("failed to read meta2 entry on flush");
+ return -EIO;
+ }
if (meta2.type != EXFAT_ENTRY_FILE_INFO)
exfat_bug("invalid type of meta2: 0x%hhx", meta2.type);
meta2.size = meta2.real_size = cpu_to_le64(node->size);
@@ -556,13 +604,22 @@ void exfat_flush_node(struct exfat* ef, struct exfat_node* node)
meta1.checksum = exfat_calc_checksum(&meta1, &meta2, node->name);
- exfat_pwrite(ef->dev, &meta1, sizeof(meta1), meta1_offset);
- exfat_pwrite(ef->dev, &meta2, sizeof(meta2), meta2_offset);
+ if (exfat_pwrite(ef->dev, &meta1, sizeof(meta1), meta1_offset) < 0)
+ {
+ exfat_error("failed to write meta1 entry on flush");
+ return -EIO;
+ }
+ if (exfat_pwrite(ef->dev, &meta2, sizeof(meta2), meta2_offset) < 0)
+ {
+ exfat_error("failed to write meta2 entry on flush");
+ return -EIO;
+ }
node->flags &= ~EXFAT_ATTRIB_DIRTY;
+ return 0;
}
-static void erase_entry(struct exfat* ef, struct exfat_node* node)
+static bool erase_entry(struct exfat* ef, struct exfat_node* node)
{
cluster_t cluster = node->entry_cluster;
off64_t offset = node->entry_offset;
@@ -570,18 +627,32 @@ static void erase_entry(struct exfat* ef, struct exfat_node* node)
uint8_t entry_type;
entry_type = EXFAT_ENTRY_FILE & ~EXFAT_ENTRY_VALID;
- exfat_pwrite(ef->dev, &entry_type, 1, co2o(ef, cluster, offset));
+ if (exfat_pwrite(ef->dev, &entry_type, 1, co2o(ef, cluster, offset)) < 0)
+ {
+ exfat_error("failed to erase meta1 entry");
+ return false;
+ }
next_entry(ef, node->parent, &cluster, &offset);
entry_type = EXFAT_ENTRY_FILE_INFO & ~EXFAT_ENTRY_VALID;
- exfat_pwrite(ef->dev, &entry_type, 1, co2o(ef, cluster, offset));
+ if (exfat_pwrite(ef->dev, &entry_type, 1, co2o(ef, cluster, offset)) < 0)
+ {
+ exfat_error("failed to erase meta2 entry");
+ return false;
+ }
while (name_entries--)
{
next_entry(ef, node->parent, &cluster, &offset);
entry_type = EXFAT_ENTRY_FILE_NAME & ~EXFAT_ENTRY_VALID;
- exfat_pwrite(ef->dev, &entry_type, 1, co2o(ef, cluster, offset));
+ if (exfat_pwrite(ef->dev, &entry_type, 1,
+ co2o(ef, cluster, offset)) < 0)
+ {
+ exfat_error("failed to erase name entry");
+ return false;
+ }
}
+ return true;
}
static int shrink_directory(struct exfat* ef, struct exfat_node* dir,
@@ -640,7 +711,11 @@ static int delete(struct exfat* ef, struct exfat_node* node)
int rc;
exfat_get_node(parent);
- erase_entry(ef, node);
+ if (!erase_entry(ef, node))
+ {
+ exfat_put_node(ef, parent);
+ return -EIO;
+ }
exfat_update_mtime(parent);
tree_detach(node);
rc = shrink_directory(ef, parent, deleted_offset);
@@ -757,17 +832,32 @@ static int write_entry(struct exfat* ef, struct exfat_node* dir,
meta1.checksum = exfat_calc_checksum(&meta1, &meta2, node->name);
- exfat_pwrite(ef->dev, &meta1, sizeof(meta1), co2o(ef, cluster, offset));
+ if (exfat_pwrite(ef->dev, &meta1, sizeof(meta1),
+ co2o(ef, cluster, offset)) < 0)
+ {
+ exfat_error("failed to write meta1 entry");
+ return -EIO;
+ }
next_entry(ef, dir, &cluster, &offset);
- exfat_pwrite(ef->dev, &meta2, sizeof(meta2), co2o(ef, cluster, offset));
+ if (exfat_pwrite(ef->dev, &meta2, sizeof(meta2),
+ co2o(ef, cluster, offset)) < 0)
+ {
+ exfat_error("failed to write meta2 entry");
+ return -EIO;
+ }
for (i = 0; i < name_entries; i++)
{
struct exfat_entry_name name_entry = {EXFAT_ENTRY_FILE_NAME, 0};
memcpy(name_entry.name, node->name + i * EXFAT_ENAME_MAX,
- EXFAT_ENAME_MAX * sizeof(le16_t));
+ MIN(EXFAT_ENAME_MAX, EXFAT_NAME_MAX - i * EXFAT_ENAME_MAX) *
+ sizeof(le16_t));
next_entry(ef, dir, &cluster, &offset);
- exfat_pwrite(ef->dev, &name_entry, sizeof(name_entry),
- co2o(ef, cluster, offset));
+ if (exfat_pwrite(ef->dev, &name_entry, sizeof(name_entry),
+ co2o(ef, cluster, offset)) < 0)
+ {
+ exfat_error("failed to write name entry");
+ return -EIO;
+ }
}
init_node_meta1(node, &meta1);
@@ -837,7 +927,7 @@ int exfat_mkdir(struct exfat* ef, const char* path)
return 0;
}
-static void rename_entry(struct exfat* ef, struct exfat_node* dir,
+static int rename_entry(struct exfat* ef, struct exfat_node* dir,
struct exfat_node* node, const le16_t* name, cluster_t new_cluster,
off64_t new_offset)
{
@@ -849,26 +939,43 @@ static void rename_entry(struct exfat* ef, struct exfat_node* dir,
const int name_entries = DIV_ROUND_UP(name_length, EXFAT_ENAME_MAX);
int i;
- exfat_pread(ef->dev, &meta1, sizeof(meta1),
- co2o(ef, old_cluster, old_offset));
+ if (exfat_pread(ef->dev, &meta1, sizeof(meta1),
+ co2o(ef, old_cluster, old_offset)) < 0)
+ {
+ exfat_error("failed to read meta1 entry on rename");
+ return -EIO;
+ }
next_entry(ef, node->parent, &old_cluster, &old_offset);
- exfat_pread(ef->dev, &meta2, sizeof(meta2),
- co2o(ef, old_cluster, old_offset));
+ if (exfat_pread(ef->dev, &meta2, sizeof(meta2),
+ co2o(ef, old_cluster, old_offset)) < 0)
+ {
+ exfat_error("failed to read meta2 entry on rename");
+ return -EIO;
+ }
meta1.continuations = 1 + name_entries;
meta2.name_hash = exfat_calc_name_hash(ef, name);
meta2.name_length = name_length;
meta1.checksum = exfat_calc_checksum(&meta1, &meta2, name);
- erase_entry(ef, node);
+ if (!erase_entry(ef, node))
+ return -EIO;
node->entry_cluster = new_cluster;
node->entry_offset = new_offset;
- exfat_pwrite(ef->dev, &meta1, sizeof(meta1),
- co2o(ef, new_cluster, new_offset));
+ if (exfat_pwrite(ef->dev, &meta1, sizeof(meta1),
+ co2o(ef, new_cluster, new_offset)) < 0)
+ {
+ exfat_error("failed to write meta1 entry on rename");
+ return -EIO;
+ }
next_entry(ef, dir, &new_cluster, &new_offset);
- exfat_pwrite(ef->dev, &meta2, sizeof(meta2),
- co2o(ef, new_cluster, new_offset));
+ if (exfat_pwrite(ef->dev, &meta2, sizeof(meta2),
+ co2o(ef, new_cluster, new_offset)) < 0)
+ {
+ exfat_error("failed to write meta2 entry on rename");
+ return -EIO;
+ }
for (i = 0; i < name_entries; i++)
{
@@ -876,13 +983,18 @@ static void rename_entry(struct exfat* ef, struct exfat_node* dir,
memcpy(name_entry.name, name + i * EXFAT_ENAME_MAX,
EXFAT_ENAME_MAX * sizeof(le16_t));
next_entry(ef, dir, &new_cluster, &new_offset);
- exfat_pwrite(ef->dev, &name_entry, sizeof(name_entry),
- co2o(ef, new_cluster, new_offset));
+ if (exfat_pwrite(ef->dev, &name_entry, sizeof(name_entry),
+ co2o(ef, new_cluster, new_offset)) < 0)
+ {
+ exfat_error("failed to write name entry on rename");
+ return -EIO;
+ }
}
memcpy(node->name, name, (EXFAT_NAME_MAX + 1) * sizeof(le16_t));
tree_detach(node);
tree_attach(dir, node);
+ return 0;
}
int exfat_rename(struct exfat* ef, const char* old_path, const char* new_path)
@@ -961,7 +1073,7 @@ int exfat_rename(struct exfat* ef, const char* old_path, const char* new_path)
exfat_put_node(ef, node);
return rc;
}
- rename_entry(ef, dir, node, name, cluster, offset);
+ rc = rename_entry(ef, dir, node, name, cluster, offset);
exfat_put_node(ef, dir);
exfat_put_node(ef, node);
return 0;
@@ -1049,8 +1161,12 @@ int exfat_set_label(struct exfat* ef, const char* label)
if (entry.length == 0)
entry.type ^= EXFAT_ENTRY_VALID;
- exfat_pwrite(ef->dev, &entry, sizeof(struct exfat_entry_label),
- co2o(ef, cluster, offset));
+ if (exfat_pwrite(ef->dev, &entry, sizeof(struct exfat_entry_label),
+ co2o(ef, cluster, offset)) < 0)
+ {
+ exfat_error("failed to write label entry");
+ return -EIO;
+ }
strcpy(ef->label, label);
return 0;
}
diff --git a/exfat/libexfat/platform.h b/exfat/libexfat/platform.h
new file mode 100644
index 000000000..320f757e8
--- /dev/null
+++ b/exfat/libexfat/platform.h
@@ -0,0 +1,79 @@
+/*
+ platform.h (14.05.13)
+ OS-specific code (libc-specific in fact). Note that systems with the
+ same kernel can use different libc implementations.
+
+ Copyright (C) 2010-2013 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
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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/>.
+*/
+
+#ifndef PLATFORM_H_INCLUDED
+#define PLATFORM_H_INCLUDED
+
+#if defined(__GLIBC__)
+
+#include <endian.h>
+#include <byteswap.h>
+
+#elif defined(__APPLE__)
+
+#include <machine/endian.h>
+#include <libkern/OSByteOrder.h>
+#define bswap_16(x) OSSwapInt16(x)
+#define bswap_32(x) OSSwapInt32(x)
+#define bswap_64(x) OSSwapInt64(x)
+#define __BYTE_ORDER BYTE_ORDER
+#define __LITTLE_ENDIAN LITTLE_ENDIAN
+#define __BIG_ENDIAN BIG_ENDIAN
+
+#elif defined(__FreeBSD__) || defined(__DragonFlyBSD__) || defined(__NetBSD__)
+
+#include <sys/endian.h>
+#define bswap_16(x) bswap16(x)
+#define bswap_32(x) bswap32(x)
+#define bswap_64(x) bswap64(x)
+#define __BYTE_ORDER _BYTE_ORDER
+#define __LITTLE_ENDIAN _LITTLE_ENDIAN
+#define __BIG_ENDIAN _BIG_ENDIAN
+
+#elif defined(__OpenBSD__)
+
+#include <machine/endian.h>
+#define bswap_16(x) swap16(x)
+#define bswap_32(x) swap32(x)
+#define bswap_64(x) swap64(x)
+#define __BYTE_ORDER _BYTE_ORDER
+#define __LITTLE_ENDIAN _LITTLE_ENDIAN
+#define __BIG_ENDIAN _BIG_ENDIAN
+
+#elif defined(__sun)
+
+#include <sys/byteorder.h>
+#define bswap_16(x) BSWAP_16(x)
+#define bswap_32(x) BSWAP_32(x)
+#define bswap_64(x) BSWAP_64(x)
+#define __LITTLE_ENDIAN 1234
+#define __BIG_ENDIAN 4321
+#ifdef _LITTLE_ENDIAN
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#else
+#define __BYTE_ORDER __BIG_ENDIAN
+#endif
+
+#else
+#error Unknown platform
+#endif
+
+#endif /* ifndef PLATFORM_H_INCLUDED */
diff --git a/exfat/libexfat/time.c b/exfat/libexfat/time.c
index 10a826a99..43c5fa4d9 100644
--- a/exfat/libexfat/time.c
+++ b/exfat/libexfat/time.c
@@ -2,11 +2,12 @@
time.c (03.02.12)
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"
diff --git a/exfat/libexfat/utf.c b/exfat/libexfat/utf.c
index fd16fe964..3b7e26b2f 100644
--- a/exfat/libexfat/utf.c
+++ b/exfat/libexfat/utf.c
@@ -2,11 +2,12 @@
utf.c (13.09.09)
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"
diff --git a/exfat/libexfat/utils.c b/exfat/libexfat/utils.c
index 499833b50..ef87692b4 100644
--- a/exfat/libexfat/utils.c
+++ b/exfat/libexfat/utils.c
@@ -2,11 +2,12 @@
utils.c (04.09.09)
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"
@@ -83,7 +85,8 @@ le16_t exfat_calc_checksum(const struct exfat_entry_meta1* meta1,
{
struct exfat_entry_name name_entry = {EXFAT_ENTRY_FILE_NAME, 0};
memcpy(name_entry.name, name + i * EXFAT_ENAME_MAX,
- EXFAT_ENAME_MAX * sizeof(le16_t));
+ MIN(EXFAT_ENAME_MAX, EXFAT_NAME_MAX - i * EXFAT_ENAME_MAX) *
+ sizeof(le16_t));
checksum = exfat_add_checksum(&name_entry, checksum);
}
return cpu_to_le16(checksum);
diff --git a/exfat/libexfat/version.h b/exfat/libexfat/version.h
index b795e9159..062fa0480 100644
--- a/exfat/libexfat/version.h
+++ b/exfat/libexfat/version.h
@@ -2,11 +2,12 @@
version.h (12.06.10)
Version constants.
+ 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.
*/
#ifndef VERSION_H_INCLUDED