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Overview
| Comment: | Check the return value of lseek() in os_unix.c to make sure it really worked. (CVS 3628) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | e4408dd1fd32e6c5057cce0fdfa70eb2 |
| User & Date: | drh 2007-02-06 11:11:08 |
Context
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2007-02-06
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| 13:26 | When optimizing out an ORDER BY clause due to uniqueness constraints, make sure unused terms to the right in the ORDER BY clause to not reference other tables in a join. Ticket #2211. Additional test cases needed before closing this ticket. (CVS 3629) check-in: 912faf18 user: drh tags: trunk | |
| 11:11 | Check the return value of lseek() in os_unix.c to make sure it really worked. (CVS 3628) check-in: e4408dd1 user: drh tags: trunk | |
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2007-02-05
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| 14:21 | Set the MEM_Term flag when an internal string has a nul-terminator appended to it. Fix for #2213. (CVS 3627) check-in: fc969ad9 user: danielk1977 tags: trunk | |
Changes
Changes to src/os_unix.c.
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/*
** Seek to the offset in id->offset then read cnt bytes into pBuf.
** Return the number of bytes actually read. Update the offset.
*/
static int seekAndRead(unixFile *id, void *pBuf, int cnt){
int got;
#ifdef USE_PREAD
got = pread(id->h, pBuf, cnt, id->offset);
#else
lseek(id->h, id->offset, SEEK_SET);
got = read(id->h, pBuf, cnt);
#endif
if( got>0 ){
id->offset += got;
}
return got;
}
................................................................................
/*
** Seek to the offset in id->offset then read cnt bytes into pBuf.
** Return the number of bytes actually read. Update the offset.
*/
static int seekAndWrite(unixFile *id, const void *pBuf, int cnt){
int got;
#ifdef USE_PREAD
got = pwrite(id->h, pBuf, cnt, id->offset);
#else
lseek(id->h, id->offset, SEEK_SET);
got = write(id->h, pBuf, cnt);
#endif
if( got>0 ){
id->offset += got;
}
return got;
}
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/*
** Seek to the offset in id->offset then read cnt bytes into pBuf.
** Return the number of bytes actually read. Update the offset.
*/
static int seekAndRead(unixFile *id, void *pBuf, int cnt){
int got;
i64 newOffset;
#ifdef USE_PREAD
got = pread(id->h, pBuf, cnt, id->offset);
#else
newOffset = lseek(id->h, id->offset, SEEK_SET);
if( newOffset!=id->offset ){
return -1;
}
got = read(id->h, pBuf, cnt);
#endif
if( got>0 ){
id->offset += got;
}
return got;
}
................................................................................
/*
** Seek to the offset in id->offset then read cnt bytes into pBuf.
** Return the number of bytes actually read. Update the offset.
*/
static int seekAndWrite(unixFile *id, const void *pBuf, int cnt){
int got;
i64 newOffset;
#ifdef USE_PREAD
got = pwrite(id->h, pBuf, cnt, id->offset);
#else
newOffset = lseek(id->h, id->offset, SEEK_SET);
if( newOffset!=id->offset ){
return -1;
}
got = write(id->h, pBuf, cnt);
#endif
if( got>0 ){
id->offset += got;
}
return got;
}
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