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Replace valid memory checks with new myfault class "exception handling", almost

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everywhere.  Leave some thread.cc stuff alone for now.
* cygtls.h: Kludge some definitions to avoid including a problematic windows
header.
(_cygtls::_myfault): New entry.
(_cygtls::_myfault_errno): Ditto.
(_cygtls::fault_guarded): New function.
(_cygtls::setup_fault): Ditto.
(_cygtls::return_from_fault): Ditto.
(_cygtls::clear_fault): Ditto.
(myfault): New class.
* exceptions.cc (handle_exceptions): Handle case of guarded fault in system
routine.
* gendef: Add another entry point for setjmp that the compiler doesn't know
about and won't complain about.
* gentls_offsets: Just include windows.h rather than kludging a HANDLE def.
* miscfuncs.cc (check_null_str): Delete.
(check_null_empty_str): Ditto.
(check_null_empty_str_errno): Ditto.
(check_null_str_errno): Ditto.
(__check_null_invalid_struct): Ditto.
(__check_null_invalid_struct_errno): Ditto.
(__check_invalid_read_ptr): Ditto.
(__check_invalid_read_ptr_errno): Ditto.
(dummytest): New function.
(check_iovec_for_read): Delete.
(chec_iovec): Rename from check_iovec_for_write.  Take a read/write parameter.
* tlsoffsets.h: Regenerate.
* winsup.h: Remove check_* declarations.
(check_iovec_for_read): Delete declaration.  Turn into a define instead.
(check_iovec_for_write): Ditto.
(check_iovec): New declaration.
* thread.h: Use ifdef guard name consistent with other header files.
This commit is contained in:
Christopher Faylor
2005-07-03 02:40:30 +00:00
parent 766bda7133
commit 893ac8e03c
32 changed files with 514 additions and 446 deletions
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22
winsup/cygwin/sem.cc
View File

@@ -21,6 +21,7 @@ details. */
#include "cygserver_ipc.h"
#include "cygserver_sem.h"
#include "cygtls.h"
/*
* client_request_sem Constructors
@@ -93,22 +94,8 @@ semctl (int semid, int semnum, int cmd, ...)
}
syscall_printf ("semctl (semid = %d, semnum = %d, cmd = %d, arg.val = 0x%x)",
semid, semnum, cmd, arg.val);
if ((cmd == IPC_STAT || cmd == IPC_SET)
&& __check_null_invalid_struct_errno (arg.buf, sizeof (struct semid_ds)))
return -1;
if (cmd == IPC_INFO)
{
/* semid == 0: Request for seminfo struct. */
if (!semid
&& __check_null_invalid_struct_errno (arg.buf, sizeof (struct seminfo)))
return -1;
/* Otherwise, request semid entries from internal semid_ds array. */
if (semid)
if (__check_null_invalid_struct_errno (arg.buf, semid * sizeof (struct semid_ds)))
return -1;
}
if (cmd == SEM_INFO
&& __check_null_invalid_struct_errno (arg.buf, sizeof (struct sem_info)))
myfault efault;
if (efault.faulted (EFAULT))
return -1;
client_request_sem request (semid, semnum, cmd, &arg);
if (request.make_request () == -1 || request.retval () == -1)
@@ -156,7 +143,8 @@ semop (int semid, struct sembuf *sops, size_t nsops)
#ifdef USE_SERVER
syscall_printf ("semop (semid = %d, sops = %p, nsops = %d)",
semid, sops, nsops);
if (__check_null_invalid_struct_errno (sops, nsops * sizeof (struct sembuf)))
myfault efault;
if (efault.faulted (EFAULT))
return -1;
client_request_sem request (semid, sops, nsops);
if (request.make_request () == -1 || request.retval () == -1)