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* syscalls.cc (stat_worker): Add a check for the special case when 

a process creates a file using mode 000 using ntsec.
This commit is contained in:
Corinna Vinschen 2001-02-06 14:07:02 +00:00
parent 31f5feea33
commit d7ed877ba3
2 changed files with 46 additions and 17 deletions
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5
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,8 @@
Tue Feb 6 15:04:00 2001 Corinna Vinschen <corinna@vinschen.de>
* syscalls.cc (stat_worker): Add a check for the special case when
a process creates a file using mode 000 using ntsec.
Mon Feb 5 17:00:00 2001 Corinna Vinschen <corinna@vinschen.de>
* fhandler.cc (fhandler_base::open): Always add GENERIC_READ access

36
winsup/cygwin/syscalls.cc
View File

@ -1027,6 +1027,11 @@ stat_worker (const char *caller, const char *name, struct stat *buf,
int res = -1;
int oret = 1;
int atts;
int attribute = 0;
uid_t uid;
gid_t gid;
char root[MAX_PATH];
UINT dtype;
fhandler_disk_file fh (NULL);
@ -1060,9 +1065,25 @@ stat_worker (const char *caller, const char *name, struct stat *buf,
if ((atts == -1 || !(atts & FILE_ATTRIBUTE_DIRECTORY) ||
(os_being_run == winNT
&& dtype != DRIVE_NO_ROOT_DIR
&& dtype != DRIVE_UNKNOWN))
&& (oret = fh.open (real_path, O_RDONLY | O_BINARY | O_DIROPEN |
(nofollow ? O_NOSYMLINK : 0), 0)))
&& dtype != DRIVE_UNKNOWN)))
{
oret = fh.open (real_path, O_RDONLY | O_BINARY | O_DIROPEN |
(nofollow ? O_NOSYMLINK : 0), 0);
/* Check a special case here. If ntsec is ON it happens
that a process creates a file using mode 000 to disallow
other processes access. In contrast to UNIX, this results
in a failing open call in the same process. Check that
case. */
if (!oret && allow_ntsec && get_errno () == EACCES
&& !get_file_attribute (TRUE, real_path, &attribute, &uid, &gid)
&& !attribute && uid == myself->uid && gid == myself->gid)
{
set_file_attribute (TRUE, real_path, 0400);
oret = fh.open (real_path, O_RDONLY | O_BINARY | O_DIROPEN |
(nofollow ? O_NOSYMLINK : 0), 0);
set_file_attribute (TRUE, real_path.get_win32 (), 0);
}
if (oret)
{
res = fh.fstat (buf);
fh.close ();
@ -1074,10 +1095,13 @@ stat_worker (const char *caller, const char *name, struct stat *buf,
/* Unfortunately the count of 2 confuses `find(1)' command. So
let's try it with `1' as link count. */
if (atts != -1 && (atts & FILE_ATTRIBUTE_DIRECTORY))
buf->st_nlink =
(dtype == DRIVE_REMOTE ? 1 : num_entries (real_path.get_win32 ()));
buf->st_nlink = (dtype == DRIVE_REMOTE
? 1
: num_entries (real_path.get_win32 ()));
goto done;
}
else if (atts != -1 || (!oret && get_errno () != ENOENT
}
if (atts != -1 || (!oret && get_errno () != ENOENT
&& get_errno () != ENOSHARE))
{
/* Unfortunately, the above open may fail if the file exists, though.