Commit Graph

20 Commits

Author SHA1 Message Date
jdolecek c48d420625 emul_find(): actually, the emulation root vnode dance has to be done for
CHECK_ALT_SYMLINK() same way as for CHECK_ALT_EXISTS()
This fixes lossage reported on current-users and kern/12019 by Ross Harvey.
2001-02-02 21:17:45 +00:00
jdolecek 2fcd02eea0 Introduce CHECK_ALT_SYMLINK() - this checks for alternative location without
following links, hence is usable for checking of presence of a symlink.
Also slighly cleanup EXISTS and CREAT cases - use symbolic constants
instead of 0/1.
This is needed for emulation of readlink(2), lchown(2) and similar.
Addresses kern/11757.
2001-01-22 19:50:56 +00:00
jdolecek bc146d0eb0 make const the struct emul * pointers passed/used in stackgap_init(),
stackgap_alloc()
2000-11-20 20:23:07 +00:00
eeh 1ecf6779be Add support for variable end of user stacks needed to support COMPAT_NETBSD32:
`struct vmspace' has a new field `vm_minsaddr' which is the user TOS.

	PS_STRINGS is deprecated in favor of curproc->p_pstr which is derived
	from `vm_minsaddr'.

	Bump the kernel version number.
2000-09-28 19:05:06 +00:00
sommerfeld 6b88a0fc51 Emulation stackgap sanity checks, based partly on fixes from
FreeBSD-SA00:42.

Change stackgap_alloc to bounds-check the allocation vs. the stack
gap, returning NULL if there isn't room for the allocation.

Change emul_find() to check for a NULL return from stackgap_alloc()
and convert that into ENAMETOOLONG.

Reorder various emulation syscalls so that all *_CHECK_ALT_{EXIST,CREAT}
calls (which turn into emul_find() under the covers come *after* small,
fixed-size stackgap_alloc() calls.

Clean up ibcs2 {get,set}groups.
2000-08-29 14:33:25 +00:00
mrg 89d0a3e519 remove redundant vm includes. 2000-06-26 14:38:50 +00:00
christos b69c7692af From cgd again: pbuf == path on failure. 1999-04-27 15:42:37 +00:00
christos c4f1bab08e Make the usage consistant and document it:
if the path was given in a user buffer, return the new path in
a user buffer.
if the path was given in a kernel buffer, allocate a new kernel buffer
to return the new path; the caller is responsible for freeing the buffer
if we fail always set the new path to NULL.
This usage broke when I adde the /../ shortcut. Noted by cgd.
1999-04-27 11:36:47 +00:00
cgd 5b217baeb1 implement a simple function, emul_flags_translate() to do table-based
flags translation.
1999-04-24 02:56:06 +00:00
christos 5e44086190 Provide a way for compat programs to specify files in the normal tree.
We do this using a trick similar to mach's /../; if a path is given as
/..<absolute-path-name>, then we return <absolute-path-name>
1999-02-14 14:32:02 +00:00
christos fd74051670 char * and char ** -> const char * and const char ** 1999-02-09 20:16:08 +00:00
fvdl 192330fdc1 Assign to TNF completely. 1998-10-03 15:48:38 +00:00
christos 8fb507a3b7 Assign copyright to TNF. 1998-09-05 14:50:25 +00:00
fvdl 811fbe17b5 Add getdirentries backward compat syscall. Provide common function to
signal cookie overflow during emulated getdents and friends.
1997-10-10 01:46:59 +00:00
cgd ce53653783 make the namei struct members ni_dirp and ni_next, and the componentname
struct member cn_nameptr 'const', since they should never be used to
modify the path name.  (Only the pathname buffer, cn_pnbuf, should be
modified.)  Propagate the const poisoning to code that uses the namei
and componentname structs.
1996-10-25 23:13:58 +00:00
thorpej bddeb30297 Don't inline stackgap_init() and stackgap_alloc(). Doing so generates
an include file dependency graph that's much more complicated than
it needs to be, and wastes space in the kernel.
1996-10-12 02:12:55 +00:00
christos 6cbf515e30 Fix compiler warnings 1996-03-14 19:31:45 +00:00
mycroft d67fb08153 Make sure we free the pathname buffer in all error cases. 1995-10-22 08:20:44 +00:00
christos c35bc29cc9 Fix PR1160... (bug with the new compat_util prefix) 1995-06-26 19:27:17 +00:00
christos dcb2a50b2b - Extracted all compat routines from the kern directory and moved here.
- Created compat_util.c and compat_util.h to be used by the compatibility
  modules, so they don't duplicate the same code.
- Added prototypes to the stackgap allocation routines.
1995-06-24 20:15:55 +00:00