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* bug#9800: Incomplete truncated file buffers from the /proc filesystem
@ 2011-10-19 22:59 Juri Linkov
  2011-10-20  8:22 ` Eli Zaretskii
                   ` (2 more replies)
  0 siblings, 3 replies; 51+ messages in thread
From: Juri Linkov @ 2011-10-19 22:59 UTC (permalink / raw)
  To: 9800

Large files from the /proc filesystem are visited incompletely,
their file buffers are truncated at the position 65536.
One possible test case to reproduce this is to load enough libraries
with e.g. (imagemagick-register-types) and visit Emacs's maps file
in /proc/$PID/maps.

Andreas said in http://lists.gnu.org/archive/html/emacs-devel/2011-10/msg00782.html
that it's due to this code in `insert-file-contents':

	  /* The file size returned from stat may be zero, but data
	     may be readable nonetheless, for example when this is a
	     file in the /proc filesystem.  */
	  if (end_offset == 0)
	    end_offset = READ_BUF_SIZE;

How this could be fixed?  Should it keep reading while more data can be
read from the file?





^ permalink raw reply	[flat|nested] 51+ messages in thread

end of thread, other threads:[~2023-03-03 17:27 UTC | newest]

Thread overview: 51+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-10-19 22:59 bug#9800: Incomplete truncated file buffers from the /proc filesystem Juri Linkov
2011-10-20  8:22 ` Eli Zaretskii
2011-10-20  8:44   ` Andreas Schwab
2023-02-12  7:38     ` Eli Zaretskii
2023-02-12  9:24       ` Ruijie Yu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2011-10-24  2:53 ` Paul Eggert
2011-10-24 21:50   ` Richard Stallman
2011-10-24 22:02     ` Paul Eggert
2023-02-12 10:21       ` Arsen Arsenović via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-02-13 20:47         ` Paul Eggert
2023-02-13 21:55           ` server.el test failures (was: Re: bug#9800: Incomplete truncated file buffers from the /proc filesystem) Jim Porter
2023-02-14  2:47             ` Paul Eggert
2023-02-15  7:06               ` Jim Porter
2023-02-15 18:20                 ` Paul Eggert
2023-02-23 23:42                   ` Paul Eggert
2023-02-24  0:50                     ` Jim Porter
2023-02-24  2:20                       ` Jim Porter
2023-02-24  3:25                         ` Po Lu
2023-02-24  3:38                           ` Jim Porter
2023-02-24  7:52                         ` Eli Zaretskii
2023-02-24 17:48                           ` Jim Porter
2023-02-24 18:37                             ` Eli Zaretskii
2023-02-24 19:45                               ` Alan Mackenzie
2023-02-24 20:31                               ` Jim Porter
2023-02-24 20:47                                 ` Eli Zaretskii
2023-02-26  8:29                       ` Paul Eggert
2023-02-26  9:47                         ` Eli Zaretskii
2023-02-27  5:31                         ` Jim Porter
2023-02-27 16:40                           ` server.el test failures Robert Pluim
2023-02-27 16:50                             ` Eli Zaretskii
2023-02-27 18:14                               ` Robert Pluim
2023-02-27 18:39                                 ` Eli Zaretskii
2023-02-28  7:42                                   ` Robert Pluim
2023-02-28 12:13                                     ` Eli Zaretskii
2023-02-28 13:05                                       ` Robert Pluim
2023-02-28 19:02                                         ` Jim Porter
2023-02-28 19:23                                           ` Eli Zaretskii
2023-02-28 19:41                                             ` Jim Porter
2023-03-01  8:22                                               ` Robert Pluim
2023-03-02 22:15                                                 ` Jim Porter
2023-03-03  7:00                                                   ` Eli Zaretskii
2023-03-03  7:15                                                     ` Jim Porter
2023-03-03  8:00                                                       ` Jim Porter
2023-03-03  8:10                                                         ` Eli Zaretskii
2023-03-03 17:27                                                           ` Jim Porter
2023-03-03  8:16                                                         ` Robert Pluim
2011-11-03 20:32   ` bug#9800: Incomplete truncated file buffers from the /proc filesystem Lars Magne Ingebrigtsen
2011-11-04  9:36     ` Juri Linkov
2011-11-04 10:54       ` Eli Zaretskii
2022-02-07  0:10 ` Lars Ingebrigtsen
2022-02-07 19:41   ` Juri Linkov

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