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Have os_unix.c reuse cached file-descriptors in the case when a read-write fd is requested on a read-only file and a read-only fd returned.

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FossilOrigin-Name: a678e85402af08c1e387bf30ff2205f84dd7da749755da565d70f831c007a3d9
This commit is contained in:
dan
2024-03-21 11:37:36 +00:00
parent 296ae1e467
commit af64a22762
4 changed files with 71 additions and 9 deletions
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9
src/os_unix.c
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@@ -6398,12 +6398,19 @@ static int unixOpen(
rc = SQLITE_READONLY_DIRECTORY;
}else if( errno!=EISDIR && isReadWrite ){
/* Failed to open the file for read/write access. Try read-only. */
UnixUnusedFd *pReadonly = 0;
flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
openFlags &= ~(O_RDWR|O_CREAT);
flags |= SQLITE_OPEN_READONLY;
openFlags |= O_RDONLY;
isReadonly = 1;
fd = robust_open(zName, openFlags, openMode);
pReadonly = findReusableFd(zName, flags);
if( pReadonly ){
fd = pReadonly->fd;
sqlite3_free(pReadonly);
}else{
fd = robust_open(zName, openFlags, openMode);
}
}
}
if( fd<0 ){