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-rw-r--r--sysdeps/generic/strsep.c26
-rw-r--r--sysdeps/mach/hurd/fork.c22
-rw-r--r--sysdeps/mach/hurd/jmp-unwind.c6
-rw-r--r--sysdeps/mach/hurd/setgid.c27
4 files changed, 50 insertions, 31 deletions
diff --git a/sysdeps/generic/strsep.c b/sysdeps/generic/strsep.c
index bb4d68bd6e..b57a22f649 100644
--- a/sysdeps/generic/strsep.c
+++ b/sysdeps/generic/strsep.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 1993, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -16,24 +16,28 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
#include <string.h>
char *
-DEFUN(strsep, (stringp, delim),
- char **stringp AND CONST char *delim)
+strsep (char **stringp, const char *delim)
{
char *begin, *end;
- begin = *stringp + strspn (*stringp, delim);
- end = *stringp + strcspn (*stringp, delim);
-
- if (end == *stringp)
+ begin = *stringp;
+ if (! begin || *begin == '\0')
return NULL;
- if (*end != '\0')
- *end++ = '\0';
- *stringp = end;
+ /* Find the end of the token. */
+ end = strpbrk (begin, delim);
+ if (end)
+ {
+ /* Terminate the token and advance *STRINGP past the delimiters. */
+ *end++ = '\0';
+ *stringp = end + strspn (end, delim);
+ }
+ else
+ /* No more delimiters; this is the last token. */
+ *stringp = NULL;
return begin;
}
diff --git a/sysdeps/mach/hurd/fork.c b/sysdeps/mach/hurd/fork.c
index 25279645ee..6fadb3d97d 100644
--- a/sysdeps/mach/hurd/fork.c
+++ b/sysdeps/mach/hurd/fork.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -121,7 +121,6 @@ __fork (void)
__spin_lock (&_hurd_ports[i].lock);
ports_locked = 1;
- *(volatile task_t *) &__mach_task_self_; /* XXX work around kernel bug */
/* Stop all other threads while copying the address space,
so nothing changes. */
@@ -130,6 +129,25 @@ __fork (void)
{
stopped = 1;
+#define XXX_KERNEL_PAGE_FAULT_BUG /* XXX work around page fault bug in mk */
+
+#ifdef XXX_KERNEL_PAGE_FAULT_BUG
+ /* Gag me with a pitchfork.
+ The bug scenario is this:
+
+ - The page containing __mach_task_self_ is paged out.
+ - The signal thread was faulting on that page when we
+ suspended it via proc_dostop. It holds some lock, or set
+ some busy bit, or somesuch.
+ - Now this thread faults on that same page.
+ - GRATUIOUS DEADLOCK
+
+ We can break the deadlock by aborting the thread that faulted
+ first, which if the bug happened was the signal thread because
+ it is the only other thread and we just suspended it.
+ */
+ __thread_abort (_hurd_msgport_thread);
+#endif
/* Create the child task. It will inherit a copy of our memory. */
err = __task_create (__mach_task_self (), 1, &newtask);
}
diff --git a/sysdeps/mach/hurd/jmp-unwind.c b/sysdeps/mach/hurd/jmp-unwind.c
index 822501f8e5..20ca5f8aa6 100644
--- a/sysdeps/mach/hurd/jmp-unwind.c
+++ b/sysdeps/mach/hurd/jmp-unwind.c
@@ -1,5 +1,5 @@
/* _longjmp_unwind -- Clean up stack frames unwound by longjmp. Hurd version.
-Copyright (C) 1995 Free Software Foundation, Inc.
+Copyright (C) 1995, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -18,8 +18,9 @@ not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <setjmp.h>
-#include <hurd/signal.h>
#include <hurd/userlink.h>
+#include <hurd/signal.h>
+#include <hurd/sigpreempt.h>
#include <assert.h>
@@ -36,7 +37,6 @@ _longjmp_unwind (jmp_buf env, int val)
{
struct hurd_sigstate *ss = _hurd_self_sigstate ();
struct hurd_userlink *link;
- struct hurd_signal_preempter **p;
/* All access to SS->active_resources must take place inside a critical
section where signal handlers cannot run. */
diff --git a/sysdeps/mach/hurd/setgid.c b/sysdeps/mach/hurd/setgid.c
index b2d9313307..ca493a4f7b 100644
--- a/sysdeps/mach/hurd/setgid.c
+++ b/sysdeps/mach/hurd/setgid.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -46,21 +46,26 @@ DEFUN(__setgid, (gid), gid_t gid)
gid_t *newgen, *newaux, auxbuf[2];
size_t ngen, naux;
- newaux = _hurd_id.aux.gids;
- naux = _hurd_id.aux.ngids;
if (_hurd_id.gen.ngids == 0)
{
/* No effective gids now. The new set will be just GID. */
newgen = &gid;
ngen = 1;
}
- else if (_hurd_id.gen.gids[0] == 0)
+ else
{
- /* We are root; set the effective, real, and saved to GID. */
_hurd_id.gen.gids[0] = gid;
_hurd_id.valid = 0;
newgen = _hurd_id.gen.gids;
ngen = _hurd_id.gen.ngids;
+ }
+
+ newaux = _hurd_id.aux.gids;
+ naux = _hurd_id.aux.ngids;
+ if (_hurd_id.gen.nuids > 0 && _hurd_id.gen.uids[0] == 0)
+ {
+ /* We are root; set the real and saved IDs too. */
+ _hurd_id.valid = 0;
if (_hurd_id.aux.ngids < 2)
{
newaux = auxbuf;
@@ -68,20 +73,12 @@ DEFUN(__setgid, (gid), gid_t gid)
}
newaux[0] = newaux[1] = gid;
}
- else
- {
- /* We are not root; just change the effective GID. */
- _hurd_id.gen.gids[0] = gid;
- _hurd_id.valid = 0;
- newgen = _hurd_id.gen.gids;
- ngen = _hurd_id.gen.ngids;
- }
err = __USEPORT (AUTH, __auth_makeauth
(port, NULL, MACH_MSG_TYPE_COPY_SEND, 0,
+ _hurd_id.gen.uids, _hurd_id.gen.nuids,
+ _hurd_id.aux.uids, _hurd_id.aux.nuids,
newgen, ngen, newaux, naux,
- _hurd_id.gen.gids, _hurd_id.gen.ngids,
- _hurd_id.aux.gids, _hurd_id.aux.ngids,
&newauth));
}
__mutex_unlock (&_hurd_id.lock);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 11:52:37 +0000