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Commit c2b48051 c2b4805128f2619235396726a116331606729e62 by Sergey Poznyakoff
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file_stream: Bugfixes 

* libmailutils/stream/file_stream.c (fd_open): Remove file state
checks: it is the responsibility of the caller.
Set autoclose on the *stream* flags (bugfix, previously the underlying
fd was never closed).
Clear MU_STREAM_SEEK flag if seek fails.
(_mu_file_stream_create): Remove assignment to stream.error_string
* include/mailutils/stream.h (MU_STREAM_ALLOW_LINKS): Remove flag.
* libmailutils/base/amd.c (amd_message_stream_open): Initialize flags
to 0.
1 parent da9c204e
Inline Side-by-side
Showing 3 changed files with 5 additions and 46 deletions
......@@ -46,7 +46,7 @@ enum mu_buffer_type
#define MU_STREAM_AUTOCLOSE 0x00000040
/* Not used. Intended for mailboxes only. */
#define MU_STREAM_NONLOCK 0x00000080
#define MU_STREAM_ALLOW_LINKS 0x00000100
/* Not used as well 0x00000100 */
/* FIXME: This one affects only mailboxes */
#define MU_STREAM_QACCESS 0x00000200
......
......@@ -1589,7 +1589,7 @@ amd_message_stream_open (struct _amd_message *mhm)
struct _amd_data *amd = mhm->amd;
char *filename;
int status;
int flags = MU_STREAM_ALLOW_LINKS;
int flags = 0;
status = amd->cur_msg_file_name (mhm, &filename);
if (status)
......
......@@ -37,8 +37,6 @@
#include <mailutils/sys/file_stream.h>
#include <mailutils/util.h>
#define MU_FSTR_ERROR_NOREG (MU_ERR_LAST+1)
static int
fd_read (struct _mu_stream *str, char *buf, size_t size, size_t *pret)
{
......@@ -107,7 +105,6 @@ fd_open (struct _mu_stream *str)
/* Oops bail out. */
if (errno != ENOENT)
return errno;
/* Race condition here when creating the file ??. */
fd = open (fstr->filename, oflg|O_CREAT|O_EXCL,
0600 | mu_stream_flags_to_mode (fstr->stream.flags, 0));
}
......@@ -118,39 +115,11 @@ fd_open (struct _mu_stream *str)
if (fd == -1)
return errno;
if (!(fstr->stream.flags & MU_STREAM_ALLOW_LINKS)
&& (fstr->stream.flags & (MU_STREAM_CREAT | MU_STREAM_RDWR |
MU_STREAM_APPEND)))
{
struct stat fdbuf, filebuf;
/* The following two stats should never fail. */
if (fstat (fd, &fdbuf) == -1
|| lstat (fstr->filename, &filebuf) == -1)
{
close (fd);
return errno;
}
/* Now check that: file and fd reference the same file,
file only has one link, file is plain file. */
if ((fdbuf.st_dev != filebuf.st_dev
|| fdbuf.st_ino != filebuf.st_ino
|| fdbuf.st_nlink != 1
|| filebuf.st_nlink != 1
|| (fdbuf.st_mode & S_IFMT) != S_IFREG))
{
/* FIXME: Be silent */
close (fd);
return MU_FSTR_ERROR_NOREG;
}
}
if (fd < 0)
return errno;
if (lseek (fd, 0, SEEK_SET) == -1)
str->flags &= ~MU_STREAM_SEEK;
/* Make sure it will be closed */
fstr->flags |= MU_STREAM_AUTOCLOSE;
str->flags |= MU_STREAM_AUTOCLOSE;
fstr->fd = fd;
return 0;
......@@ -190,15 +159,6 @@ fd_done (struct _mu_stream *str)
free (fstr->echo_state);
}
const char *
fd_error_string (struct _mu_stream *str, int rc)
{
if (rc == MU_FSTR_ERROR_NOREG)
return _("must be a plain file with one link");
else
return mu_strerror (rc);
}
#ifndef TCSASOFT
# define TCSASOFT 0
#endif
......@@ -353,7 +313,6 @@ _mu_file_stream_create (struct _mu_file_stream **pstream, size_t size,
str->stream.ctl = fd_ioctl;
str->stream.wait = fd_wait;
str->stream.truncate = fd_truncate;
str->stream.error_string = fd_error_string;
if (filename)
str->filename = mu_strdup (filename);
......