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When extracting links from sqlar archives, clobber any existing file or link, and do not call utimes() to set the timestamp - it looks through the link and operates on the target.

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FossilOrigin-Name: 2bf8c3f99ad8b74f707d17272fa12b674bec66082d3e8349ebef3dac42ba0782
This commit is contained in:
dan
2024-05-06 20:21:31 +00:00
parent 07305e3a3a
commit 11a088b7eb
4 changed files with 51 additions and 18 deletions
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24
ext/misc/fileio.c
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@ -372,7 +372,9 @@ static int writeFile(
#if !defined(_WIN32) && !defined(WIN32)
if( S_ISLNK(mode) ){
const char *zTo = (const char*)sqlite3_value_text(pData);
if( zTo==0 || symlink(zTo, zFile)<0 ) return 1;
if( zTo==0 ) return 1;
unlink(zFile);
if( symlink(zTo, zFile)<0 ) return 1;
}else
#endif
{
@ -458,13 +460,19 @@ static int writeFile(
return 1;
}
#else
/* Legacy unix */
struct timeval times[2];
times[0].tv_usec = times[1].tv_usec = 0;
times[0].tv_sec = time(0);
times[1].tv_sec = mtime;
if( utimes(zFile, times) ){
return 1;
/* Legacy unix.
**
** Do not use utimes() on a symbolic link - it sees through the link and
** modifies the timestamps on the target. Or fails if the target does
** not exist. */
if( 0==S_ISLNK(mode) ){
struct timeval times[2];
times[0].tv_usec = times[1].tv_usec = 0;
times[0].tv_sec = time(0);
times[1].tv_sec = mtime;
if( utimes(zFile, times) ){
return 1;
}
}
#endif
}