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* sysdeps/unix/sysv/linux/pselect.c (__pselect): Allow actual
system call code to be redefined in macro CALL_PSELECT6. * sysdeps/unix/sysv/linux/i386/Makefile [subdir=misc] (sysdep_routines): Add call_pselect6. * sysdeps/unix/sysv/linux/i386/call_pselect6.c: New file. * sysdeps/unix/sysv/linux/i386/pselect.c: New file. * misc/Makefile (tests): Add tst-pselect. * misc/tst-pselect.c: New file. * sysdeps/unix/sysv/linux/pselect.c: Fix typo in declaration. * sysdeps/unix/sysv/linux/xmknodat.c (__xmknodat): Cast k_dev value to unsigned int to match kernel.
This commit is contained in:
Ulrich Drepper
parent
e6c8af451f
commit
5c983cdd08
16
ChangeLog
16
ChangeLog
@ -1,9 +1,25 @@
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2006-01-21 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/pselect.c (__pselect): Allow actual
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system call code to be redefined in macro CALL_PSELECT6.
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* sysdeps/unix/sysv/linux/i386/Makefile [subdir=misc]
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(sysdep_routines): Add call_pselect6.
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* sysdeps/unix/sysv/linux/i386/call_pselect6.c: New file.
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* sysdeps/unix/sysv/linux/i386/pselect.c: New file.
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* misc/Makefile (tests): Add tst-pselect.
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* misc/tst-pselect.c: New file.
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2006-01-20 Roland McGrath <roland@frob.com>
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* sysdeps/mach/hurd/ppoll.c: New file.
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2006-01-20 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/pselect.c: Fix typo in declaration.
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* sysdeps/unix/sysv/linux/xmknodat.c (__xmknodat): Cast k_dev
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value to unsigned int to match kernel.
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* sysdeps/unix/sysv/linux/faccessat.c (faccessat): Try using the
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syscall in more cases.
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@ -77,7 +77,7 @@ endif
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gpl2lgpl := error.c error.h
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tests := tst-dirname tst-tsearch tst-fdset tst-efgcvt tst-mntent tst-hsearch \
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tst-error1
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tst-error1 tst-pselect
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ifeq (no,$(cross-compiling))
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tests: $(objpfx)tst-error1-mem
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endif
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120
misc/tst-pselect.c
Normal file
120
misc/tst-pselect.c
Normal file
@ -0,0 +1,120 @@
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/select.h>
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#include <sys/wait.h>
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static volatile int handler_called;
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static void
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handler (int sig)
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{
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handler_called = 1;
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}
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static int
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do_test (void)
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{
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struct sigaction sa;
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sa.sa_handler = handler;
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sa.sa_flags = 0;
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sigemptyset (&sa.sa_mask);
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if (sigaction (SIGUSR1, &sa, NULL) != 0)
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{
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puts ("sigaction failed");
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return 1;
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}
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if (sigblock (SIGUSR1) != 0)
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{
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puts ("sigblock failed");
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return 1;
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}
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int fds[2][2];
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if (pipe (fds[0]) != 0 || pipe (fds[1]) != 0)
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{
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puts ("pipe failed");
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return 1;
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}
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fd_set rfds;
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FD_ZERO (&rfds);
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sigset_t ss;
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sigprocmask (SIG_SETMASK, NULL, &ss);
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sigdelset (&ss, SIGUSR1);
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struct timespec to = { .tv_sec = 0, .tv_nsec = 500000000 };
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pid_t p = fork ();
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if (p == 0)
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{
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close (fds[0][1]);
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close (fds[1][0]);
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FD_SET (fds[0][0], &rfds);
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int e;
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do
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{
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errno = 0;
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e = pselect (fds[0][0] + 1, &rfds, NULL, NULL, &to, &ss);
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}
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while (e == 0);
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if (e != -1)
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{
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puts ("child: pselect did not fail");
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return 0;
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}
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if (errno != EINTR)
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{
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puts ("child: pselect did not set errno to EINTR");
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return 0;
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}
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TEMP_FAILURE_RETRY (write (fds[1][1], "foo", 3));
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exit (0);
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}
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close (fds[0][0]);
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close (fds[1][1]);
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FD_SET (fds[1][0], &rfds);
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kill (p, SIGUSR1);
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int e = pselect (fds[1][0] + 1, &rfds, NULL, NULL, NULL, &ss);
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if (e == -1)
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{
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puts ("parent: pselect failed");
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return 1;
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}
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if (e != 1)
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{
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puts ("parent: pselect did not report readable fd");
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return 1;
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}
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if (!FD_ISSET (fds[1][0], &rfds))
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{
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puts ("parent: pselect reports wrong fd");
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return 1;
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}
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if (TEMP_FAILURE_RETRY (waitpid (p, NULL, 0)) != p)
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{
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puts ("waitpid failed");
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return 1;
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}
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return 0;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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@ -1,5 +1,5 @@
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ifeq ($(subdir),misc)
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sysdep_routines += ioperm iopl vm86
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sysdep_routines += ioperm iopl vm86 call_pselect6
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sysdep_headers += sys/elf.h sys/perm.h sys/reg.h sys/vm86.h sys/debugreg.h sys/io.h
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endif
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65
sysdeps/unix/sysv/linux/i386/call_pselect6.S
Normal file
65
sysdeps/unix/sysv/linux/i386/call_pselect6.S
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@ -0,0 +1,65 @@
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/* Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#ifdef __NR_pselect6
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.text
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ENTRY(__call_pselect6)
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.hidden __call_pselect6
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pushl %ebx
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cfi_adjust_cfa_offset (4)
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pushl %esi
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cfi_adjust_cfa_offset (4)
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pushl %edi
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cfi_adjust_cfa_offset (4)
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pushl %ebp
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cfi_adjust_cfa_offset (4)
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cfi_rel_offset (ebp, 0)
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cfi_rel_offset (edi, 4)
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cfi_rel_offset (esi, 8)
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cfi_rel_offset (ebx, 12)
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movl $__NR_pselect6, %eax
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movl 20(%esp), %ebx
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movl 24(%esp), %ecx
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movl 28(%esp), %edx
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movl 32(%esp), %esi
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movl 36(%esp), %edi
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movl 40(%esp), %ebp
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/* The syscall handling cannot handle 6 parameters. Yet. */
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int $0x80
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popl %ebp
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cfi_adjust_cfa_offset (-4)
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cfi_restore (ebp)
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popl %edi
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cfi_adjust_cfa_offset (-4)
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cfi_restore (edi)
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popl %esi
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cfi_adjust_cfa_offset (-4)
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cfi_restore (esi)
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popl %ebx
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cfi_adjust_cfa_offset (-4)
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cfi_restore (ebx)
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ret
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END(__call_pselect6)
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#endif
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18
sysdeps/unix/sysv/linux/i386/pselect.c
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18
sysdeps/unix/sysv/linux/i386/pselect.c
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#include <sys/select.h>
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extern int __call_pselect6 (int nfds, fd_set *readfds, fd_set *writefds,
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fd_set *exceptfds, const struct timespec *timeout,
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void *data) attribute_hidden;
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#define CALL_PSELECT6(nfds, readfds, writefds, exceptfds, timeout, data) \
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({ int r = __call_pselect6 (nfds, readfds, writefds, exceptfds, timeout, \
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data); \
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if (r < 0 && r > -4096) \
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{ \
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__set_errno (-r); \
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r = -1; \
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} \
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r; })
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#include "../pselect.c"
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@ -29,7 +29,7 @@
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static int __generic_pselect (int nfds, fd_set *readfds, fd_set *writefds,
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fd_set *exceptfds,
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const struct timespec *timeout,
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const sigset_t *sigmask)
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const sigset_t *sigmask);
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int
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@ -51,7 +51,7 @@ __pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
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be created. */
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struct
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{
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sigset_t *ss;
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const sigset_t *ss;
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size_t ss_len;
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} data;
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@ -60,15 +60,21 @@ __pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
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int result;
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#ifndef CALL_PSELECT6
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# define CALL_PSELECT6(nfds, readfds, writefds, exceptfds, timeout, data) \
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INLINE_SYSCALL (pselect6, 6, nfds, readfds, writefds, exceptfds, \
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timeout, data)
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#endif
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if (SINGLE_THREAD_P)
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result = INLINE_SYSCALL (pselect6, 6, nfds, readfds, writefds, exceptfds,
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timeout, &data);
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result = CALL_PSELECT6 (nfds, readfds, writefds, exceptfds, timeout,
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&data);
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else
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{
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int oldtype = LIBC_CANCEL_ASYNC ();
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result = INLINE_SYSCALL (pselect6, 6, nfds, readfds, writefds, exceptfds,
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timeout, &data);
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result = CALL_PSELECT6 (nfds, readfds, writefds, exceptfds, timeout,
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&data);
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LIBC_CANCEL_RESET (oldtype);
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}
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@ -81,6 +87,8 @@ __pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
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return result;
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}
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weak_alias (__pselect, pselect)
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strong_alias (__pselect, __libc_pselect)
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# ifndef __ASSUME_PSELECT
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# define __pselect static __generic_pselect
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