aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/unix/sysv/linux/ttyname_r.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1998-04-27 09:43:55 +0000
committerUlrich Drepper <drepper@redhat.com>1998-04-27 09:43:55 +0000
commit45139d5f770d32969d95593a6e176688c2205d54 (patch)
tree1b0cf211e106b8de1ff19e1c4c5ba3ff4bf6bcb3 /sysdeps/unix/sysv/linux/ttyname_r.c
parent625094fd7aedb7088304d2e14471a9fae256f994 (diff)
downloadglibc-45139d5f770d32969d95593a6e176688c2205d54.tar
glibc-45139d5f770d32969d95593a6e176688c2205d54.tar.gz
glibc-45139d5f770d32969d95593a6e176688c2205d54.tar.bz2
glibc-45139d5f770d32969d95593a6e176688c2205d54.zip
Update.
1998-04-24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * streams/Makefile (headers): Add sys/stropts.h. * streams/sys/stropts.h: New file. 1998-04-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/ttyname.c, sysdeps/unix/sysv/linux/ttyname_r.c: New files, like sysdeps/posix/ttyname*.c, but look in /dev/pts first. 1998-04-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/ptsname.c: Fix off-by-one bug in second argument of _itoa_word. 1998-04-24 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/syscalls.list (s_getcwd, s_getdents, s_pread64, s_pwrite64, s_reboot, s_sigpending, s_sigprocmask): Set caller to getcwd, getdents, pread64, pwrite64, reboot, sigpending, sigprocmask, resp., instead of EXTRA. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove s_pread64 and s_pwrite64.
Diffstat (limited to 'sysdeps/unix/sysv/linux/ttyname_r.c')
-rw-r--r--sysdeps/unix/sysv/linux/ttyname_r.c182
1 files changed, 182 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/ttyname_r.c b/sysdeps/unix/sysv/linux/ttyname_r.c
new file mode 100644
index 0000000000..9f22f71f31
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/ttyname_r.c
@@ -0,0 +1,182 @@
+/* Copyright (C) 1991, 92, 93, 95, 96, 97, 98 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
+ 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 <limits.h>
+#include <stddef.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+static int getttyname_r __P ((int fd, char *buf, size_t buflen,
+ dev_t mydev, ino_t myino, int save,
+ int *dostat)) internal_function;
+
+static int
+internal_function
+getttyname_r (fd, buf, buflen, mydev, myino, save, dostat)
+ int fd;
+ char *buf;
+ size_t buflen;
+ dev_t mydev;
+ ino_t myino;
+ int save;
+ int *dostat;
+{
+ struct stat st;
+ DIR *dirstream;
+ struct dirent *d;
+ size_t devlen = strlen (buf);
+
+ dirstream = opendir (buf);
+ if (dirstream == NULL)
+ {
+ *dostat = -1;
+ return errno;
+ }
+
+ while ((d = readdir (dirstream)) != NULL)
+ if (((ino_t) d->d_fileno == myino || *dostat)
+ && strcmp (d->d_name, "stdin")
+ && strcmp (d->d_name, "stdout")
+ && strcmp (d->d_name, "stderr"))
+ {
+ char *cp;
+ size_t needed = _D_EXACT_NAMLEN (d) + 1;
+
+ if (needed > buflen)
+ {
+ *dostat = -1;
+ (void) closedir (dirstream);
+ __set_errno (ERANGE);
+ return ERANGE;
+ }
+
+ cp = __stpncpy (buf + devlen, d->d_name, needed);
+ cp[0] = '\0';
+
+ if (stat (buf, &st) == 0
+#ifdef _STATBUF_ST_RDEV
+ && S_ISCHR (st.st_mode) && st.st_rdev == mydev
+#else
+ && (ino_t) d->d_fileno == myino && st.st_dev == mydev
+#endif
+ )
+ {
+ (void) closedir (dirstream);
+ __set_errno (save);
+ return 0;
+ }
+ }
+
+ (void) closedir (dirstream);
+ __set_errno (save);
+ /* It is not clear what to return in this case. `isatty' says FD
+ refers to a TTY but no entry in /dev has this inode. */
+ return ENOTTY;
+}
+
+/* Store at most BUFLEN character of the pathname of the terminal FD is
+ open on in BUF. Return 0 on success, otherwise an error number. */
+int
+__ttyname_r (fd, buf, buflen)
+ int fd;
+ char *buf;
+ size_t buflen;
+{
+ struct stat st, st1;
+ int dostat = 0;
+ int save = errno;
+ int ret;
+
+ /* Test for the absolute minimal size. This makes life easier inside
+ the loop. */
+ if (!buf)
+ {
+ __set_errno (EINVAL);
+ return EINVAL;
+ }
+
+ if (buflen < sizeof ("/dev/pts/"))
+ {
+ __set_errno (ERANGE);
+ return ERANGE;
+ }
+
+ if (!__isatty (fd))
+ {
+ __set_errno (ENOTTY);
+ return ENOTTY;
+ }
+
+ if (fstat (fd, &st) < 0)
+ return errno;
+
+ /* Prepare the result buffer. */
+ memcpy (buf, "/dev/pts/", sizeof ("/dev/pts/"));
+ buflen -= sizeof ("/dev/pts/") - 1;
+
+ if (stat (buf, &st1) == 0 && S_ISDIR (st1.st_mode))
+ {
+#ifdef _STATBUF_ST_RDEV
+ ret = getttyname_r (fd, buf, buflen, st.st_rdev, st.st_ino, save,
+ &dostat);
+#else
+ ret = getttyname_r (fd, buf, buflen, st.st_dev, st.st_ino, save,
+ &dostat);
+#endif
+ }
+ else
+ {
+ __set_errno (save);
+ ret = ENOENT;
+ }
+
+ if (ret && dostat != -1)
+ {
+ buf[sizeof ("/dev/") - 1] = '\0';
+ buflen += sizeof ("pts/") - 1;
+#ifdef _STATBUF_ST_RDEV
+ ret = getttyname_r (fd, buf, buflen, st.st_rdev, st.st_ino, save,
+ &dostat);
+#else
+ ret = getttyname_r (fd, buf, buflen, st.st_dev, st.st_ino, save,
+ &dostat);
+#endif
+ }
+
+ if (ret && dostat != -1)
+ {
+ buf[sizeof ("/dev/") - 1] = '\0';
+ dostat = 1;
+#ifdef _STATBUF_ST_RDEV
+ ret = getttyname_r (fd, buf, buflen, st.st_rdev, st.st_ino,
+ save, &dostat);
+#else
+ ret = getttyname_r (fd, buf, buflen, st.st_dev, st.st_ino,
+ save, &dostat);
+#endif
+ }
+
+ return ret;
+}
+
+weak_alias (__ttyname_r, ttyname_r)