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authorUlrich Drepper <drepper@redhat.com>1998-01-30 11:44:34 +0000
committerUlrich Drepper <drepper@redhat.com>1998-01-30 11:44:34 +0000
commit6591c3356242ba48627beb29345e4e44242c7068 (patch)
tree402220c75072909733e8d383ea5b999f30f1f527 /sysdeps/unix/grantpt.c
parent7f0ff1b04ad67b1a4f624a8ad54e7533d1c8aab3 (diff)
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Update.
1998-01-30 19:58 Ulrich Drepper <drepper@cygnus.com> * include/cpio.h: Move to ... * posix/cpio.h: ...here. * locale/programs/ld-collate.c: Fix typo. * signal/signal.h: Declare _sys_siglist with NSIG+1 elements. * stdio-common/tiformat.c: Add checks for %#.0o and friends. * login/utmp_file.c (pututline_file): Don't always report success if similar entry is found. Patch by Mark M. Kettenis. 1998-01-30 16:06 Philip Blundell <pb@nexus.co.uk> * manual/Makefile: Don't try to install the info files if makeinfo is not available. 1998-01-30 12:05 Philip Blundell <pb@nexus.co.uk> * sysdeps/unix/sysv/linux/bits/ioctls.h: Include a copy of the kernel's network ioctls, rather than using <linux/sockios.h> to get them. This way we are sure of maintaining compatibility if the kernel interface should change. 1998-01-30 15:52 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/Dist: Add netrose/rose.h. 1998-01-25 19:54 Philip Blundell <Philip.Blundell@pobox.com> * sysdeps/unix/sysv/linux/netrose/rose.h: New file. * sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Install it. 1998-01-27 22:29 Zack Weinberg <zack@rabi.phys.columbia.edu> Implement System V pseudoterminal handling. * login/Makefile (routines): Add getpt, grantpt, unlockpt, ptsname. (libutil-routines): Remove pty. Add openpty, forkpty. (distribute): New internal header pty-internal.h. (others): Add the helper program, pt_chown. (install-others): Install it, in $(libexecdir), mode 4755. * login/pty-internal.h: New file. * login/openpty.c: New file. * login/forkpty.c: New file. * login/programs/pt_chown.c: New file. * libc.map: Add getpt, grantpt, unlockpt, ptsname, ptsname_r. * stdlib/stdlib.h: Prototype them. * config.make.in: Define $(libexecdir). * Makeconfig: Define $(inst_libexecdir). * sysdeps/generic/pty.c: Removed. * sysdeps/unix/sysv/linux/pty.c: Removed. * sysdeps/generic/getpt.c: Stub out. * sysdeps/generic/grantpt.c: Likewise. * sysdeps/generic/ptsname.c: Likewise. * sysdeps/generic/unlockpt.c: Likewise. * sysdeps/unix/grantpt.c: New file. * sysdeps/unix/bsd/getpt.c: New file. * sysdeps/unix/bsd/unlockpt.c: New file. * sysdeps/unix/sysv/linux/getpt.c: New file. * sysdeps/unix/sysv/linux/ptsname.c: New file. * sysdeps/unix/sysv/linux/unlockpt.c: New file. 1998-01-29 23:56 Ulrich Drepper <drepper@cygnus.com> * localedata/locales/ru_RU: Fix YESEXPR. Patch by lav@yars.free.net. 1998-01-29 Andreas Jaeger <aj@arthur.rhein-neckar.de> * nss/Makefile (tests): Add rule for test-netdb.c. * nss/test-netdb.c: New file. 1998-01-29 02:38 Ulrich Drepper <drepper@cygnus.com> * elf/dl-open.c (_dl_open): Make sure the variable `reloc' is really kept as a variable. Patch by Richard Henderson, reported by Jakub Jelinek <jj@sunsite.ms.mff.cuni.cz>. * elf/rtld.c (dl_main): Call _dl_init_paths before handling preloading. * elf/genrtldtbl.awk: Mark machine dependent directory of generated entries as not existing. 1998-01-26 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * stdio-common/vfprintf.c (process_arg): Fix printing of octal zero in alternate form with precision of zero, which must produce "0". Add braces to avoid ambiguous `else'. 1998-01-26 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/nss_compat/compat-grp.c: Fix memory leak and trailing null problem with strncpy. * nis/nss_compat/compat-pwd.c: Likewise. * nis/nss_compat/comapt-spwd.c: Likewise. 1998-01-28 Andreas Jaeger <aj@arthur.rhein-neckar.de> * assert/assert.h (assert_perror): Correct test for errnum. Patch by uch@nop.or.jp. [PR libc/437] 1997-12-20 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * locales/pl_PL: Fix int_curr_symbol. 1998-01-26 Andreas Jaeger <aj@arthur.rhein-neckar.de> * nis/nis_cache.c: Include <unistd.h> for declaration of close. 1998-01-06 Andreas Jaeger <aj@arthur.rhein-neckar.de> * stdio-common/test-popen.c: Include <errno.h>. * sysdeps/unix/sysv/linux/if_index.c: Include <unistd.h> for close. * inet/getnetgrent_r.c: Include <errno.h>. * db2/db/db_conv.c: Include <string.h> for memcpy. * gmon/bb_exit_func.c: Include <string.h> instead of <strings.h> so that memcpy is declared. * iconv/iconv_open.c: Include <stdlib.h> for alloca. * misc/init-misc.c: Remove unneeded inclusion of <errno.h>. 1998-01-26 Andreas Jaeger <aj@arthur.rhein-neckar.de> * pwd/fgetpwent_r.c (__fgetpwent_r): Correctly handle buffer overflow while reading line with fgets. * grp/fgetgrent_r.c (__fgetgrent_r): Likewise. 1998-01-27 00:46 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/bits/types.h (__ipc_pid_t): Change to unsigned short, not short. Reported by Andreas Jaeger. 1998-01-06 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/unix/sysv/linux/mips/syscalls.list: Correct typo (ccept->accept). * sysdeps/generic/inttypes.h: Fix spelling. 1998-01-04 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/unix/sysv/linux/arm/Dist: Add bits/mman.h. * sysdeps/unix/sysv/linux/alpha/Dist: Add net/route.h. 1998-01-27 00:30 Ulrich Drepper <drepper@cygnus.com> * stdio-common/printf.h (struct print_info): Add new bitfield is_char. * stdio-common/printf-parse.h (parse_one_spec): Fill in is_char field for hh modifier. * stdio-common/vfprint.c: Use is_char field and do not depend in is_short having the value 2. Bug reported by Andreas Jaeger. 1998-01-05 Andreas Jaeger <aj@arthur.rhein-neckar.de> * libio/freopen.c (freopen): Call _IO_old_freopen only if defined PIC && DO_VERSIONING. 1998-01-24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Rules: Add rules for $(common-objpfx)dummy$o.
Diffstat (limited to 'sysdeps/unix/grantpt.c')
-rw-r--r--sysdeps/unix/grantpt.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/sysdeps/unix/grantpt.c b/sysdeps/unix/grantpt.c
new file mode 100644
index 0000000..4837a7a
--- /dev/null
+++ b/sysdeps/unix/grantpt.c
@@ -0,0 +1,111 @@
+/* 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 *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, (char *const *) 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;
+}