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-rw-r--r--lib/libsqlite3/src/os_unix.c75
1 files changed, 52 insertions, 23 deletions
diff --git a/lib/libsqlite3/src/os_unix.c b/lib/libsqlite3/src/os_unix.c
index 92bdc3fe634..1216ab33a43 100644
--- a/lib/libsqlite3/src/os_unix.c
+++ b/lib/libsqlite3/src/os_unix.c
@@ -300,6 +300,14 @@ static int randomnessPid = 0;
#endif
/*
+** Explicitly call the 64-bit version of lseek() on Android. Otherwise, lseek()
+** is the 32-bit version, even if _FILE_OFFSET_BITS=64 is defined.
+*/
+#ifdef __ANDROID__
+# define lseek lseek64
+#endif
+
+/*
** Different Unix systems declare open() in different ways. Same use
** open(const char*,int,mode_t). Others use open(const char*,int,...).
** The difference is important when using a pointer to the function.
@@ -631,7 +639,7 @@ static int unixMutexHeld(void) {
#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG)
/*
** Helper function for printing out trace information from debugging
-** binaries. This returns the string represetation of the supplied
+** binaries. This returns the string representation of the supplied
** integer lock-type.
*/
static const char *azFileLock(int eFileLock){
@@ -708,9 +716,22 @@ static int lockTrace(int fd, int op, struct flock *p){
/*
** Retry ftruncate() calls that fail due to EINTR
+**
+** All calls to ftruncate() within this file should be made through this wrapper.
+** On the Android platform, bypassing the logic below could lead to a corrupt
+** database.
*/
static int robust_ftruncate(int h, sqlite3_int64 sz){
int rc;
+#ifdef __ANDROID__
+ /* On Android, ftruncate() always uses 32-bit offsets, even if
+ ** _FILE_OFFSET_BITS=64 is defined. This means it is unsafe to attempt to
+ ** truncate a file to any size larger than 2GiB. Silently ignore any
+ ** such attempts. */
+ if( sz>(sqlite3_int64)0x7FFFFFFF ){
+ rc = SQLITE_OK;
+ }else
+#endif
do{ rc = osFtruncate(h,sz); }while( rc<0 && errno==EINTR );
return rc;
}
@@ -3098,7 +3119,7 @@ static int nfsUnlock(sqlite3_file *id, int eFileLock){
** NB: If you define USE_PREAD or USE_PREAD64, then it might also
** be necessary to define _XOPEN_SOURCE to be 500. This varies from
** one system to another. Since SQLite does not define USE_PREAD
-** any any form by default, we will not attempt to define _XOPEN_SOURCE.
+** in any form by default, we will not attempt to define _XOPEN_SOURCE.
** See tickets #2741 and #2681.
**
** To avoid stomping the errno value on a failed read the lastErrno value
@@ -3595,7 +3616,7 @@ static int unixTruncate(sqlite3_file *id, i64 nByte){
nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk;
}
- rc = robust_ftruncate(pFile->h, (off_t)nByte);
+ rc = robust_ftruncate(pFile->h, nByte);
if( rc ){
pFile->lastErrno = errno;
return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath);
@@ -3730,7 +3751,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){
}
/*
-** If *pArg is inititially negative then this is a query. Set *pArg to
+** If *pArg is initially negative then this is a query. Set *pArg to
** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set.
**
** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags.
@@ -3937,7 +3958,7 @@ static int unixSectorSize(sqlite3_file *id){
** Return the device characteristics for the file.
**
** This VFS is set up to return SQLITE_IOCAP_POWERSAFE_OVERWRITE by default.
-** However, that choice is contraversial since technically the underlying
+** However, that choice is controversial since technically the underlying
** file system does not always provide powersafe overwrites. (In other
** words, after a power-loss event, parts of the file that were never
** written might end up being altered.) However, non-PSOW behavior is very,
@@ -4909,7 +4930,7 @@ static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){
** looks at the filesystem type and tries to guess the best locking
** strategy from that.
**
-** For finder-funtion F, two objects are created:
+** For finder-function F, two objects are created:
**
** (1) The real finder-function named "FImpt()".
**
@@ -4930,7 +4951,7 @@ static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){
** * An I/O method finder function called FINDER that returns a pointer
** to the METHOD object in the previous bullet.
*/
-#define IOMETHODS(FINDER, METHOD, VERSION, CLOSE, LOCK, UNLOCK, CKLOCK) \
+#define IOMETHODS(FINDER, METHOD, VERSION, CLOSE, LOCK, UNLOCK, CKLOCK, SHMMAP) \
static const sqlite3_io_methods METHOD = { \
VERSION, /* iVersion */ \
CLOSE, /* xClose */ \
@@ -4945,7 +4966,7 @@ static const sqlite3_io_methods METHOD = { \
unixFileControl, /* xFileControl */ \
unixSectorSize, /* xSectorSize */ \
unixDeviceCharacteristics, /* xDeviceCapabilities */ \
- unixShmMap, /* xShmMap */ \
+ SHMMAP, /* xShmMap */ \
unixShmLock, /* xShmLock */ \
unixShmBarrier, /* xShmBarrier */ \
unixShmUnmap, /* xShmUnmap */ \
@@ -4971,16 +4992,18 @@ IOMETHODS(
unixClose, /* xClose method */
unixLock, /* xLock method */
unixUnlock, /* xUnlock method */
- unixCheckReservedLock /* xCheckReservedLock method */
+ unixCheckReservedLock, /* xCheckReservedLock method */
+ unixShmMap /* xShmMap method */
)
IOMETHODS(
nolockIoFinder, /* Finder function name */
nolockIoMethods, /* sqlite3_io_methods object name */
- 1, /* shared memory is disabled */
+ 3, /* shared memory is disabled */
nolockClose, /* xClose method */
nolockLock, /* xLock method */
nolockUnlock, /* xUnlock method */
- nolockCheckReservedLock /* xCheckReservedLock method */
+ nolockCheckReservedLock, /* xCheckReservedLock method */
+ 0 /* xShmMap method */
)
IOMETHODS(
dotlockIoFinder, /* Finder function name */
@@ -4989,7 +5012,8 @@ IOMETHODS(
dotlockClose, /* xClose method */
dotlockLock, /* xLock method */
dotlockUnlock, /* xUnlock method */
- dotlockCheckReservedLock /* xCheckReservedLock method */
+ dotlockCheckReservedLock, /* xCheckReservedLock method */
+ 0 /* xShmMap method */
)
#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS
@@ -5000,7 +5024,8 @@ IOMETHODS(
flockClose, /* xClose method */
flockLock, /* xLock method */
flockUnlock, /* xUnlock method */
- flockCheckReservedLock /* xCheckReservedLock method */
+ flockCheckReservedLock, /* xCheckReservedLock method */
+ 0 /* xShmMap method */
)
#endif
@@ -5012,7 +5037,8 @@ IOMETHODS(
semClose, /* xClose method */
semLock, /* xLock method */
semUnlock, /* xUnlock method */
- semCheckReservedLock /* xCheckReservedLock method */
+ semCheckReservedLock, /* xCheckReservedLock method */
+ 0 /* xShmMap method */
)
#endif
@@ -5024,7 +5050,8 @@ IOMETHODS(
afpClose, /* xClose method */
afpLock, /* xLock method */
afpUnlock, /* xUnlock method */
- afpCheckReservedLock /* xCheckReservedLock method */
+ afpCheckReservedLock, /* xCheckReservedLock method */
+ 0 /* xShmMap method */
)
#endif
@@ -5049,7 +5076,8 @@ IOMETHODS(
proxyClose, /* xClose method */
proxyLock, /* xLock method */
proxyUnlock, /* xUnlock method */
- proxyCheckReservedLock /* xCheckReservedLock method */
+ proxyCheckReservedLock, /* xCheckReservedLock method */
+ 0 /* xShmMap method */
)
#endif
@@ -5062,7 +5090,8 @@ IOMETHODS(
unixClose, /* xClose method */
unixLock, /* xLock method */
nfsUnlock, /* xUnlock method */
- unixCheckReservedLock /* xCheckReservedLock method */
+ unixCheckReservedLock, /* xCheckReservedLock method */
+ 0 /* xShmMap method */
)
#endif
@@ -5171,7 +5200,7 @@ static const sqlite3_io_methods
#endif /* OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE */
/*
-** An abstract type for a pointer to a IO method finder function:
+** An abstract type for a pointer to an IO method finder function:
*/
typedef const sqlite3_io_methods *(*finder_type)(const char*,unixFile*);
@@ -5485,7 +5514,7 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){
** descriptor on the same path, fail, and return an error to SQLite.
**
** Even if a subsequent open() call does succeed, the consequences of
- ** not searching for a resusable file descriptor are not dire. */
+ ** not searching for a reusable file descriptor are not dire. */
if( 0==osStat(zPath, &sStat) ){
unixInodeInfo *pInode;
@@ -5516,7 +5545,7 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){
** written to *pMode. If an IO error occurs, an SQLite error code is
** returned and the value of *pMode is not modified.
**
-** In most cases cases, this routine sets *pMode to 0, which will become
+** In most cases, this routine sets *pMode to 0, which will become
** an indication to robust_open() to create the file using
** SQLITE_DEFAULT_FILE_PERMISSIONS adjusted by the umask.
** But if the file being opened is a WAL or regular journal file, then
@@ -5885,7 +5914,7 @@ static int unixDelete(
if( osUnlink(zPath)==(-1) ){
if( errno==ENOENT
#if OS_VXWORKS
- || errno==0x380003
+ || osAccess(zPath,0)!=0
#endif
){
rc = SQLITE_IOERR_DELETE_NOENT;
@@ -6312,7 +6341,7 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
** proxy path against the values stored in the conch. The conch file is
** stored in the same directory as the database file and the file name
** is patterned after the database file name as ".<databasename>-conch".
-** If the conch file does not exist, or it's contents do not match the
+** If the conch file does not exist, or its contents do not match the
** host ID and/or proxy path, then the lock is escalated to an exclusive
** lock and the conch file contents is updated with the host ID and proxy
** path and the lock is downgraded to a shared lock again. If the conch
@@ -6364,7 +6393,7 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){
** setting the environment variable SQLITE_FORCE_PROXY_LOCKING to 1 will
** force proxy locking to be used for every database file opened, and 0
** will force automatic proxy locking to be disabled for all database
-** files (explicity calling the SQLITE_SET_LOCKPROXYFILE pragma or
+** files (explicitly calling the SQLITE_SET_LOCKPROXYFILE pragma or
** sqlite_file_control API is not affected by SQLITE_FORCE_PROXY_LOCKING).
*/
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.