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fix temp file open

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was not auto-deleteing on windows, needs a fallback on linux

see https://github.com/libvips/libvips/pull/1155
This commit is contained in:
John Cupitt 2018-11-05 10:40:51 +00:00
parent 1b47c64c94
commit 0bea76d364
2 changed files with 15 additions and 14 deletions
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1
ChangeLog
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@ -1,6 +1,7 @@
23/9/18 started 8.7.1
- update function list in docs [janko-m]
- test for g_str_to_ascii() [jcupitt]
- fix temp file open on Windows and fallback on linux [lovell]
23/12/17 started 8.7.0
- add magicksave, save image with libMagick [dlemstra]

28
libvips/iofuncs/vips.c
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@ -187,37 +187,37 @@ vips__open_image_write( const char *filename, gboolean temp )
int flags;
int fd;
flags = MODE_WRITE;
fd = -1;
#ifdef O_TMPFILE
/* Linux-only extension creates an unlinked file. CREAT and TRUNC must
* be clear. The filename arg to open() must name a directory.
*
* This can fail since not all filesystems support it. In this case,
* we open as a regular file and rely on the delete-on-close
* mechanism, see vips_image_delete().
*/
if( temp ) {
char *dirname;
flags |= O_TMPFILE;
flags &= ~O_CREAT;
flags &= ~O_TRUNC;
dirname = g_path_get_dirname( filename );
fd = vips_tracked_open( dirname, flags, 0666 );
fd = vips_tracked_open( dirname, O_TMPFILE | O_RDWR , 0666 );
g_free( dirname );
}
else
fd = vips_tracked_open( filename, flags, 0666 );
#else /*!O_TMPFILE*/
fd = vips_tracked_open( filename, flags, 0666 );
#endif /*O_TMPFILE*/
flags = MODE_WRITE;
#ifdef _O_TEMPORARY
/* On Windows, setting _O_TEMPORARY gets the file automatically
* deleted on process exit, even if the processes crashes. See
* vips_image_rewind() for what we do to help on *nix.
/* On Windows, setting _O_TEMPORARY will delete the file automatically
* on process exit, even if the processes crashes.
*/
if( temp )
flags |= _O_TEMPORARY;
#endif /*_O_TEMPORARY*/
#endif /*O_TMPFILE*/
if( fd < 0 )
fd = vips_tracked_open( filename, flags, 0666 );
if( fd < 0 ) {
vips_error_system( errno, "VipsImage",