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* fhandler.h (fhandler_pty_slave::fch_open_handles): Add bool parameter

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to declaration.
	* fhandler_tty.cc (fhandler_pty_slave::fch_open_handles): Add bool
	parameter "chown".  Only request WRITE_OWNER access when opening pty
	synchronization objects if "chown" is set.
	(fhandler_pty_slave::fchmod): Call fch_open_handles with new bool
	parameter set to false.
	(fhandler_pty_slave::fchown): Call fch_open_handles with new bool
	parameter set to true.
	* kernel32.cc (CreateFileMappingW): Fix default standard rights for
	file mappings from READ_CONTROL to STANDARD_RIGHTS_REQUIRED to allow
	changing the DACL (fixes "access denied" error in pinfo::set_acl).

	* fhandler_disk_file.cc (fhandler_base::fstat_helper): Change debug
	output to print mode bits in octal.
	* security.cc (alloc_sd): Ditto.
	(set_file_attribute): Ditto.
This commit is contained in:
Corinna Vinschen 2014-08-27 11:42:17 +00:00
parent 37579836e3
commit 326510785e
5 changed files with 26 additions and 11 deletions
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14
winsup/cygwin/ChangeLog
View File

@ -1,9 +1,23 @@
2014-08-27 Corinna Vinschen <corinna@vinschen.de> 2014-08-27 Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (fhandler_pty_slave::fch_open_handles): Add bool parameter
to declaration.
* fhandler_tty.cc (fhandler_pty_slave::fch_open_handles): Add bool
parameter "chown". Only request WRITE_OWNER access when opening pty
synchronization objects if "chown" is set.
(fhandler_pty_slave::fchmod): Call fch_open_handles with new bool
parameter set to false.
(fhandler_pty_slave::fchown): Call fch_open_handles with new bool
parameter set to true.
* kernel32.cc (CreateFileMappingW): Fix default standard rights for * kernel32.cc (CreateFileMappingW): Fix default standard rights for
file mappings from READ_CONTROL to STANDARD_RIGHTS_REQUIRED to allow file mappings from READ_CONTROL to STANDARD_RIGHTS_REQUIRED to allow
changing the DACL (fixes "access denied" error in pinfo::set_acl). changing the DACL (fixes "access denied" error in pinfo::set_acl).
* fhandler_disk_file.cc (fhandler_base::fstat_helper): Change debug
output to print mode bits in octal.
* security.cc (alloc_sd): Ditto.
(set_file_attribute): Ditto.
2014-08-27 Corinna Vinschen <corinna@vinschen.de> 2014-08-27 Corinna Vinschen <corinna@vinschen.de>
* ntea.cc (read_ea): Change left-over return to __leave. Fix * ntea.cc (read_ea): Change left-over return to __leave. Fix

2
winsup/cygwin/fhandler.h
View File

@ -1506,7 +1506,7 @@ class fhandler_pty_slave: public fhandler_pty_common
HANDLE inuse; // used to indicate that a tty is in use HANDLE inuse; // used to indicate that a tty is in use
/* Helper functions for fchmod and fchown. */ /* Helper functions for fchmod and fchown. */
bool fch_open_handles (); bool fch_open_handles (bool chown);
int fch_set_sd (security_descriptor &sd, bool chown); int fch_set_sd (security_descriptor &sd, bool chown);
void fch_close_handles (); void fch_close_handles ();

2
winsup/cygwin/fhandler_disk_file.cc
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@ -714,7 +714,7 @@ fhandler_base::fstat_helper (struct stat *buf, DWORD nNumberOfLinks)
} }
done: done:
syscall_printf ("0 = fstat (%S, %p) st_size=%D, st_mode=%y, st_ino=%D" syscall_printf ("0 = fstat (%S, %p) st_size=%D, st_mode=0%o, st_ino=%D"
"st_atim=%lx.%lx st_ctim=%lx.%lx " "st_atim=%lx.%lx st_ctim=%lx.%lx "
"st_mtim=%lx.%lx st_birthtim=%lx.%lx", "st_mtim=%lx.%lx st_birthtim=%lx.%lx",
pc.get_nt_native_path (), buf, pc.get_nt_native_path (), buf,

15
winsup/cygwin/fhandler_tty.cc
View File

@ -1102,17 +1102,18 @@ fhandler_pty_slave::fstat (struct stat *st)
/* Helper function for fchmod and fchown, which just opens all handles /* Helper function for fchmod and fchown, which just opens all handles
and signals success via bool return. */ and signals success via bool return. */
bool bool
fhandler_pty_slave::fch_open_handles () fhandler_pty_slave::fch_open_handles (bool chown)
{ {
char buf[MAX_PATH]; char buf[MAX_PATH];
DWORD write_access = WRITE_DAC | (chown ? WRITE_OWNER : 0);
_tc = cygwin_shared->tty[get_minor ()]; _tc = cygwin_shared->tty[get_minor ()];
shared_name (buf, INPUT_AVAILABLE_EVENT, get_minor ()); shared_name (buf, INPUT_AVAILABLE_EVENT, get_minor ());
input_available_event = OpenEvent (READ_CONTROL | WRITE_DAC | WRITE_OWNER, input_available_event = OpenEvent (READ_CONTROL | write_access,
TRUE, buf); TRUE, buf);
output_mutex = get_ttyp ()->open_output_mutex (WRITE_DAC | WRITE_OWNER); output_mutex = get_ttyp ()->open_output_mutex (write_access);
input_mutex = get_ttyp ()->open_input_mutex (WRITE_DAC | WRITE_OWNER); input_mutex = get_ttyp ()->open_input_mutex (write_access);
inuse = get_ttyp ()->open_inuse (WRITE_DAC | WRITE_OWNER); inuse = get_ttyp ()->open_inuse (write_access);
if (!input_available_event || !output_mutex || !input_mutex || !inuse) if (!input_available_event || !output_mutex || !input_mutex || !inuse)
{ {
__seterrno (); __seterrno ();
@ -1166,7 +1167,7 @@ fhandler_pty_slave::fchmod (mode_t mode)
if (!input_available_event) if (!input_available_event)
{ {
to_close = true; to_close = true;
if (!fch_open_handles ()) if (!fch_open_handles (false))
goto errout; goto errout;
} }
sd.malloc (sizeof (SECURITY_DESCRIPTOR)); sd.malloc (sizeof (SECURITY_DESCRIPTOR));
@ -1195,7 +1196,7 @@ fhandler_pty_slave::fchown (uid_t uid, gid_t gid)
if (!input_available_event) if (!input_available_event)
{ {
to_close = true; to_close = true;
if (!fch_open_handles ()) if (!fch_open_handles (true))
goto errout; goto errout;
} }
sd.malloc (sizeof (SECURITY_DESCRIPTOR)); sd.malloc (sizeof (SECURITY_DESCRIPTOR));

4
winsup/cygwin/security.cc
View File

@ -506,7 +506,7 @@ alloc_sd (path_conv &pc, uid_t uid, gid_t gid, int attribute,
/* NOTE: If the high bit of attribute is set, we have just created /* NOTE: If the high bit of attribute is set, we have just created
a file or directory. See below for an explanation. */ a file or directory. See below for an explanation. */
debug_printf("uid %u, gid %u, attribute %y", uid, gid, attribute); debug_printf("uid %u, gid %u, attribute 0%o", uid, gid, attribute);
/* Get owner and group from current security descriptor. */ /* Get owner and group from current security descriptor. */
PSID cur_owner_sid = NULL; PSID cur_owner_sid = NULL;
@ -964,7 +964,7 @@ set_file_attribute (HANDLE handle, path_conv &pc,
} }
else else
ret = 0; ret = 0;
syscall_printf ("%d = set_file_attribute(%S, %d, %d, %y)", syscall_printf ("%d = set_file_attribute(%S, %d, %d, 0%o)",
ret, pc.get_nt_native_path (), uid, gid, attribute); ret, pc.get_nt_native_path (), uid, gid, attribute);
return ret; return ret;
} }