I submitted this a while back, no comments were made but it was not
included either.
Changelog:
1 - Fix incorrect reporting of no media in floppy drive as
permissions problem.
2 - Provide partial workaround for very long delays (c. 40 sec per
lookup, about 7 minutes to set up file browser) on lookups to
floppy drive not physically present (e.g. laptop with floppy or
CD setup)
Index: wine/files/drive.c
===================================================================
RCS file: /home/wine/wine/files/drive.c,v
retrieving revision 1.74
diff -u -r1.74 drive.c
--- wine/files/drive.c 20 Jun 2002 23:21:27 -0000 1.74
+++ wine/files/drive.c 2 Jul 2002 18:19:38 -0000
@@ -7,6 +7,7 @@
* Label & serial number read support.
* (c) 1999 Petr Tomasek <tomasek@etf.cuni.cz>
* (c) 2000 Andreas Mohr (changes)
+ * (c) 2002 Keith Matthews (changes)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -36,6 +37,7 @@
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
+#include <time.h>
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
@@ -541,26 +543,126 @@
#define DRIVE_SUPER 96
int fd;
off_t offs;
+ struct stat dev_data;
+ uid_t user;
+ gid_t group;
+ time_t call_start, call_end;
+ double time_diff;
int ret = 0;
if (memset(buff,0,DRIVE_SUPER)!=buff) return -1;
- if ((fd=open(DOSDrives[drive].device,O_RDONLY)) == -1)
+
+ if ((DOSDrives[drive].flags & DRIVE_DISABLED))
+ return 0; /* should not get DEIVE_DISABLED here except as part
of
+ * non-existing floppy kludge
+ */
+ if (!DOSDrives[drive].device)
{
- struct stat st;
- if (!DOSDrives[drive].device)
- ERR("No device configured for drive %c: !\n", 'A'+drive);
- else
- ERR("Couldn't open device '%s' for drive %c: ! (%s)\n",DOSDrives[drive].device, 'A'+drive,
- (stat(DOSDrives[drive].device, &st)) ?
- "not available or symlink not valid ?" : "no permission");
- ERR("Can't read drive volume info ! Either pre-set it or make sure the device to read it from is accessible !\n");
+ ERR("No Device Configured for drive %c: !\n",'A'+drive);
PROFILE_UsageWineIni();
return -1;
}
+ if (( stat(DOSDrives[drive].device,&dev_data)) == -1)
+ {
+ if (errno == ENOENT || errno == ENOTDIR || errno == ELOOP || errno == ENAMETOOLONG )
+ {
+ ERR("Device ('%s) Configured for drive %c: is not a valid device path!\n",DOSDrives[drive].device,'A'+drive);
+ return -1;
+ } else if ( errno == EACCES )
+ ERR("Permissions problem on device for drive %c: !\n", 'A'+drive);
+ PROFILE_UsageWineIni();
+ return -1;
+ } else
+ {
+ user = getuid();
+ group = getgid();
+ if ( user == dev_data.st_uid)
+ {
+ /* We are running as the device owner - check those perms */
+ if ( (dev_data.st_mode & S_IRUSR) == 0 )
+ {
+ /* owner does not have read perms - stupid but */
+ ERR("Permissions problem on device for drive %c: - user does not have read access !\n", 'A'+drive);
+ PROFILE_UsageWineIni();
+ return -1;
+ }
+ } else if ( group == dev_data.st_gid )
+ {
+ if ( (dev_data.st_mode & S_IRGRP) == 0 )
+ {
+ /* group does not have read perms */
+ ERR("Permissions problem on device for drive %c: - group does not have read access !\n", 'A'+drive);
+ PROFILE_UsageWineIni();
+ return -1;
+ }
+
+ } else if ( (dev_data.st_mode & S_IROTH) == 0 )
+ {
+ /* not owning user or group and no perms */
+ ERR("Permissions problem on device for drive %c: - effective user does not have read access !\n", 'A'+drive);
+ PROFILE_UsageWineIni();
+ return -1;
+
+ }
+ }
+
+ time(&call_start);
+
/*******************************************************************************
+ * start of kludge to trap situation where attempt is madeto address /dev/fd0
+ * (or some such) and it is not actually present. Should never happen in
+ * desktop machine but could well happen on laptop.
+ *
+ * Kludge only necessary as open thinks it can really open the file and
+ * takes 39 seconds to do it.
+ *
+
*******************************************************************************/
+
+ if ((fd=open(DOSDrives[drive].device,O_RDONLY)) == -1)
+ {
+ if (DOSDrives[drive].type == DRIVE_REMOVABLE )
+ {
+
/*****************************************************************************
+ * OK, we've checked just about everything we can, it's a removeable media
+ * device, so assume no media since that gives same response
+ *
+ * Wrong if not running as root and user does not have read to device but
+ * we've already checked for that above
+ *
+
**************************************************************************/
+
+ DOSDrives[drive].flags = DOSDrives[drive].flags |DRIVE_NO_MEDIA;
+
+/* ++++++++++++++++ should we be down here for CD's also ? also what about Jazz drives etc ?+++++++++++++++++++++++ */
+
+ } else {
+
/****************************************************************************
+ *
+ * Not removeable media device - must be permissions problem
+ *
+
***************************************************************************/
+ ERR("Couldn't open device '%s' for drive %c: ! (%s)\n", DOSDrives[drive].device, 'A'+drive,
+ "no permission");
+ ERR("Can't read drive volume info ! Either pre-set it or make sure the device to read it from is accessible !\n");
+ PROFILE_UsageWineIni();
+ return -1;
+
+ }
+ }
+
+ time(&call_end);
+ time_diff = difftime(call_end, call_start);
+ if (time_diff > 5 )
+ {
+ /* open took more that 5 sec. - error situation described above */
+ DOSDrives[drive].flags = DOSDrives[drive].flags | DRIVE_DISABLED;
+ return 0; /* no point in erroring, act as if no media */
+ }
+
switch(DOSDrives[drive].type)
{
case DRIVE_REMOVABLE:
+ /* leaves offs unset - is this critical ? */
case DRIVE_FIXED:
offs = 0;
break;
@@ -572,15 +674,17 @@
break;
}
- if ((offs) && (lseek(fd,offs,SEEK_SET)!=offs))
- {
- ret = -4;
- goto the_end;
- }
- if (read(fd,buff,DRIVE_SUPER)!=DRIVE_SUPER)
+ if ((offs) && (lseek(fd,offs,SEEK_SET)!=offs)) return -4;
+ if (read(fd,buff,DRIVE_SUPER)!=DRIVE_SUPER)
{
- ret = -2;
- goto the_end;
+ if (DOSDrives[drive].type != DRIVE_REMOVABLE)
+ {
+ return -2;
+ } else {
+ DOSDrives[drive].flags = DOSDrives[drive].flags | DRIVE_NO_MEDIA;
+ return 0;
+ }
+
}
switch(DOSDrives[drive].type)
