mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 10:20:06 +00:00
41df5ed40a
1998-03-01 Richard Henderson <rth@cygnus.com> * shlib-versions: Match alpha*. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Add adjtimex. * sysdeps/unix/sysv/linux/alpha/adjtimex.S: Remove. * sysdeps/alpha/fpu/bits/mathinline.h (isunordered et al): New. Implement copysign* with and without __ prefix. Likewise for fabs; use builtin for gcc 2.8. (floor*): New. (fdim*): New. * elf/elf.h (EF_SPARC*, EF_ALPHA*, SHT_ALPHA*, SHF_ALPHA*): New. (R_SPARC*): Match current v9 ABI. * sysdeps/wordsize-64/stdint.h (intptr_t): Is a long. * sunrpc/clnt_udp.c (clntudp_call): Use socklen_t. * sunrpc/pmap_rmt.c (clnt_broadcast): Likewise. * sunrpc/svc_tcp.c (svctcp_create, rendezvous_request): Likewise. * sysdeps/generic/getresgid.c: Use prototype form because of warning. * sysdeps/unix/sysv/linux/getdents.c: Likewise. * sysdeps/unix/sysv/linux/alpha/adjtime.c: Likewise. * sysdeps/unix/grantpt.c (argv): Fix consts. * sysdeps/unix/sysv/linux/getpt.c: Include <string.h> * sysdeps/unix/sysv/linux/sigaction.c: Likewise.
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/* Copyright (C) 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include <assert.h>
|
|
|
|
#include "pty-internal.h"
|
|
|
|
/* Given a fd on a master pseudoterminal, chown the file associated
|
|
with the slave to the calling process, and set its group and
|
|
mode appropriately. Note that this is an unprivileged operation. */
|
|
|
|
/* This "generic Unix" implementation works because we provide the program
|
|
/usr/libexec/pt_chown, and it only depends on ptsname() working. */
|
|
static const char helper[] = LIBEXECDIR "/pt_chown";
|
|
static const char *const argv[] = { "pt_chown", NULL };
|
|
|
|
int
|
|
grantpt (fd)
|
|
int fd;
|
|
{
|
|
struct stat st;
|
|
int w, pid;
|
|
char namebuf[PTYNAMELEN];
|
|
|
|
/* Some systems do it for us. */
|
|
if (ptsname_r (fd, namebuf, PTYNAMELEN) == NULL)
|
|
return -1;
|
|
if (stat (namebuf, &st))
|
|
return -1;
|
|
|
|
if (st.st_uid == getuid ())
|
|
return 0;
|
|
|
|
/* We have to do it in user space. */
|
|
|
|
pid = fork ();
|
|
if (pid == -1)
|
|
return -1;
|
|
else if (pid == 0)
|
|
{
|
|
/* Disable core dumps in the child. */
|
|
struct rlimit off = { 0, 0 };
|
|
setrlimit (RLIMIT_CORE, &off);
|
|
|
|
/* The helper does its thing on fd PTY_FD. */
|
|
if (fd != PTY_FD)
|
|
if (dup2 (fd, PTY_FD) == -1)
|
|
_exit (FAIL_EBADF);
|
|
|
|
execve (helper, argv, 0);
|
|
_exit (FAIL_EXEC);
|
|
}
|
|
else
|
|
{
|
|
if (waitpid (pid, &w, 0) == -1)
|
|
return -1;
|
|
if (!WIFEXITED (w))
|
|
{
|
|
__set_errno (ENOEXEC);
|
|
return -1;
|
|
}
|
|
else
|
|
switch (WEXITSTATUS(w))
|
|
{
|
|
case 0:
|
|
break;
|
|
case FAIL_EBADF:
|
|
__set_errno (EBADF);
|
|
return -1;
|
|
case FAIL_EINVAL:
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
case FAIL_EACCES:
|
|
__set_errno (EACCES);
|
|
return -1;
|
|
case FAIL_EXEC:
|
|
__set_errno (ENOEXEC);
|
|
return -1;
|
|
|
|
default:
|
|
assert(! "getpt: internal error: invalid exit code from pt_chown");
|
|
}
|
|
}
|
|
|
|
/* Success. */
|
|
return 0;
|
|
}
|