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Overview
| Comment: | Invoke the unix open() system call through a wrapper to avoid problems resulting from differing declarations to that function in various systems. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 4c7ff4dd352276e9c01cc536e188cbcd69396952 |
| User & Date: | drh 2011-04-25 18:01:27 |
Context
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2011-04-25
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| 18:03 | Add the (deliberately undocumented) sqlite_log() SQL function as a built-in. check-in: f7806e03 user: drh tags: trunk | |
| 18:01 | Invoke the unix open() system call through a wrapper to avoid problems resulting from differing declarations to that function in various systems. check-in: 4c7ff4dd user: drh tags: trunk | |
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2011-04-24
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| 22:56 | Disable the transfer optimization if the destination table contains any foreign key constraint and foreign key constraints are enabled. Ticket [6284df89debdf]. check-in: ddeea5ab user: drh tags: trunk | |
Changes
Changes to src/os_unix.c.
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** testing and debugging only.
*/
#if SQLITE_THREADSAFE
#define threadid pthread_self()
#else
#define threadid 0
#endif
/*
** Many system calls are accessed through pointer-to-functions so that
** they may be overridden at runtime to facilitate fault injection during
** testing and sandboxing. The following array holds the names and pointers
** to all overrideable system calls.
*/
static struct unix_syscall {
const char *zName; /* Name of the sytem call */
sqlite3_syscall_ptr pCurrent; /* Current value of the system call */
sqlite3_syscall_ptr pDefault; /* Default value */
} aSyscall[] = {
{ "open", (sqlite3_syscall_ptr)open, 0 },
#define osOpen ((int(*)(const char*,int,...))aSyscall[0].pCurrent)
{ "close", (sqlite3_syscall_ptr)close, 0 },
#define osClose ((int(*)(int))aSyscall[1].pCurrent)
{ "access", (sqlite3_syscall_ptr)access, 0 },
#define osAccess ((int(*)(const char*,int))aSyscall[2].pCurrent)
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** testing and debugging only. */ #if SQLITE_THREADSAFE #define threadid pthread_self() #else #define threadid 0 #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. ** ** The safest way to deal with the problem is to always use this wrapper ** which always has the same well-defined interface. */ static int posixOpen(const char *zFile, int flags, int mode){ return open(zFile, flags, mode); } /* ** Many system calls are accessed through pointer-to-functions so that ** they may be overridden at runtime to facilitate fault injection during ** testing and sandboxing. The following array holds the names and pointers ** to all overrideable system calls. */ static struct unix_syscall { const char *zName; /* Name of the sytem call */ sqlite3_syscall_ptr pCurrent; /* Current value of the system call */ sqlite3_syscall_ptr pDefault; /* Default value */ } aSyscall[] = { { "open", (sqlite3_syscall_ptr)posixOpen, 0 }, #define osOpen ((int(*)(const char*,int,int))aSyscall[0].pCurrent) { "close", (sqlite3_syscall_ptr)close, 0 }, #define osClose ((int(*)(int))aSyscall[1].pCurrent) { "access", (sqlite3_syscall_ptr)access, 0 }, #define osAccess ((int(*)(const char*,int))aSyscall[2].pCurrent) |