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2002-07-23 Jeff Johnston <jjohnstn@redhat.com>

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* libc/include/stdio.h: Move fcloseall prototype within
        #ifndef _REENT_ONLY section.
        * libc/sys/linux/Makefile.am: Add new files.
        * libc/sys/linux/Makefile.in: Regenerated.
        * libc/sys/linux/sys/stdio.h: Add ctermid prototype.
        * libc/sys/linux/sys/unistd.h: Add ttyname_r prototype.
        * libc/sys/linux/sys/types.h: Add ino64_t type.
        * libc/sys/linux/ctermid.c: New file.
        * libc/sys/linux/ttyname_r.c: Ditto.
        * libc/sys/linux/readdir64.c: Ditto.
This commit is contained in:
Jeff Johnston
2002-07-23 19:40:45 +00:00
parent 010bb8a4a1
commit bc10065533
10 changed files with 372 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
newlib/ChangeLog
View File

@@ -1,3 +1,16 @@
2002-07-23 Jeff Johnston <jjohnstn@redhat.com>
* libc/include/stdio.h: Move fcloseall prototype within
#ifndef _REENT_ONLY section.
* libc/sys/linux/Makefile.am: Add new files.
* libc/sys/linux/Makefile.in: Regenerated.
* libc/sys/linux/sys/stdio.h: Add ctermid prototype.
* libc/sys/linux/sys/unistd.h: Add ttyname_r prototype.
* libc/sys/linux/sys/types.h: Add ino64_t type.
* libc/sys/linux/ctermid.c: New file.
* libc/sys/linux/ttyname_r.c: Ditto.
* libc/sys/linux/readdir64.c: Ditto.
2002-07-22 Jeff Johnston <jjohnstn@redhat.com>
* libc/include/stdio.h (fcloseall, _fcloseall_r): Added prototypes.

2
newlib/libc/include/stdio.h
View File

@@ -204,7 +204,6 @@ int _EXFUN(rename, (const char *, const char *));
#endif
#ifndef __STRICT_ANSI__
int _EXFUN(asprintf, (char **, const char *, ...));
int _EXFUN(fcloseall, (_VOID));
int _EXFUN(fseeko, (FILE *, off_t, int));
off_t _EXFUN(ftello, ( FILE *));
int _EXFUN(vfiprintf, (FILE *, const char *, __VALIST));
@@ -218,6 +217,7 @@ int _EXFUN(vfscanf, (FILE *, const char *, __VALIST));
int _EXFUN(vscanf, (const char *, __VALIST));
int _EXFUN(vsscanf, (const char *, const char *, __VALIST));
#ifndef _REENT_ONLY
int _EXFUN(fcloseall, (_VOID));
int _EXFUN(snprintf, (char *, size_t, const char *, ...));
#endif
#endif

5
newlib/libc/sys/linux/Makefile.am
View File

@@ -2,7 +2,7 @@
AUTOMAKE_OPTIONS = cygnus
INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
INCLUDES = -I$(srcdir)/include $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
SUBDIRS = machine \
.
@@ -19,6 +19,7 @@ LIB_SOURCES = \
clock_getres.c \
clock_gettime.c \
clock_settime.c \
ctermid.c \
flockfile.c \
fpathconf.c \
free.c \
@@ -67,6 +68,7 @@ LIB_SOURCES = \
pwrite.c \
pwrite64.c \
raise.c \
readdir64.c \
realloc.c \
reallocr.c \
realpath.c \
@@ -98,6 +100,7 @@ LIB_SOURCES = \
tcsendbrk.c \
termios.c \
time.c \
ttyname_r.c \
usleep.c \
utimes.c \
vallocr.c \

79
newlib/libc/sys/linux/Makefile.in
View File

@@ -97,7 +97,7 @@ sys_dir = @sys_dir@
AUTOMAKE_OPTIONS = cygnus
INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
INCLUDES = -I$(srcdir)/include $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
SUBDIRS = machine \
.
@@ -116,6 +116,7 @@ LIB_SOURCES = \
clock_getres.c \
clock_gettime.c \
clock_settime.c \
ctermid.c \
flockfile.c \
fpathconf.c \
free.c \
@@ -164,6 +165,7 @@ LIB_SOURCES = \
pwrite.c \
pwrite64.c \
raise.c \
readdir64.c \
realloc.c \
reallocr.c \
realpath.c \
@@ -195,6 +197,7 @@ LIB_SOURCES = \
tcsendbrk.c \
termios.c \
time.c \
ttyname_r.c \
usleep.c \
utimes.c \
vallocr.c \
@@ -242,14 +245,15 @@ LIBS = @LIBS@
@USE_LIBTOOL_FALSE@calloc.$(OBJEXT) callocr.$(OBJEXT) cfreer.$(OBJEXT) \
@USE_LIBTOOL_FALSE@cfspeed.$(OBJEXT) clock_getres.$(OBJEXT) \
@USE_LIBTOOL_FALSE@clock_gettime.$(OBJEXT) clock_settime.$(OBJEXT) \
@USE_LIBTOOL_FALSE@flockfile.$(OBJEXT) fpathconf.$(OBJEXT) \
@USE_LIBTOOL_FALSE@free.$(OBJEXT) freer.$(OBJEXT) ftok.$(OBJEXT) \
@USE_LIBTOOL_FALSE@funlockfile.$(OBJEXT) getdate.$(OBJEXT) \
@USE_LIBTOOL_FALSE@getdate_err.$(OBJEXT) gethostname.$(OBJEXT) \
@USE_LIBTOOL_FALSE@getoptlong.$(OBJEXT) getreent.$(OBJEXT) \
@USE_LIBTOOL_FALSE@getrlimit64.$(OBJEXT) ids.$(OBJEXT) inode.$(OBJEXT) \
@USE_LIBTOOL_FALSE@io.$(OBJEXT) io64.$(OBJEXT) ipc.$(OBJEXT) \
@USE_LIBTOOL_FALSE@linux.$(OBJEXT) malign.$(OBJEXT) malignr.$(OBJEXT) \
@USE_LIBTOOL_FALSE@ctermid.$(OBJEXT) flockfile.$(OBJEXT) \
@USE_LIBTOOL_FALSE@fpathconf.$(OBJEXT) free.$(OBJEXT) freer.$(OBJEXT) \
@USE_LIBTOOL_FALSE@ftok.$(OBJEXT) funlockfile.$(OBJEXT) \
@USE_LIBTOOL_FALSE@getdate.$(OBJEXT) getdate_err.$(OBJEXT) \
@USE_LIBTOOL_FALSE@gethostname.$(OBJEXT) getoptlong.$(OBJEXT) \
@USE_LIBTOOL_FALSE@getreent.$(OBJEXT) getrlimit64.$(OBJEXT) \
@USE_LIBTOOL_FALSE@ids.$(OBJEXT) inode.$(OBJEXT) io.$(OBJEXT) \
@USE_LIBTOOL_FALSE@io64.$(OBJEXT) ipc.$(OBJEXT) linux.$(OBJEXT) \
@USE_LIBTOOL_FALSE@malign.$(OBJEXT) malignr.$(OBJEXT) \
@USE_LIBTOOL_FALSE@mallinfor.$(OBJEXT) mallocr.$(OBJEXT) \
@USE_LIBTOOL_FALSE@malloptr.$(OBJEXT) mallstatsr.$(OBJEXT) \
@USE_LIBTOOL_FALSE@mmap.$(OBJEXT) mq_close.$(OBJEXT) \
@@ -262,45 +266,46 @@ LIBS = @LIBS@
@USE_LIBTOOL_FALSE@pread.$(OBJEXT) pread64.$(OBJEXT) process.$(OBJEXT) \
@USE_LIBTOOL_FALSE@psignal.$(OBJEXT) pvallocr.$(OBJEXT) \
@USE_LIBTOOL_FALSE@pwrite.$(OBJEXT) pwrite64.$(OBJEXT) raise.$(OBJEXT) \
@USE_LIBTOOL_FALSE@realloc.$(OBJEXT) reallocr.$(OBJEXT) \
@USE_LIBTOOL_FALSE@realpath.$(OBJEXT) rename.$(OBJEXT) \
@USE_LIBTOOL_FALSE@resource.$(OBJEXT) sched.$(OBJEXT) select.$(OBJEXT) \
@USE_LIBTOOL_FALSE@seteuid.$(OBJEXT) sethostname.$(OBJEXT) \
@USE_LIBTOOL_FALSE@setrlimit64.$(OBJEXT) shm_open.$(OBJEXT) \
@USE_LIBTOOL_FALSE@shm_unlink.$(OBJEXT) sig.$(OBJEXT) \
@USE_LIBTOOL_FALSE@sigaction.$(OBJEXT) sigqueue.$(OBJEXT) \
@USE_LIBTOOL_FALSE@readdir64.$(OBJEXT) realloc.$(OBJEXT) \
@USE_LIBTOOL_FALSE@reallocr.$(OBJEXT) realpath.$(OBJEXT) \
@USE_LIBTOOL_FALSE@rename.$(OBJEXT) resource.$(OBJEXT) sched.$(OBJEXT) \
@USE_LIBTOOL_FALSE@select.$(OBJEXT) seteuid.$(OBJEXT) \
@USE_LIBTOOL_FALSE@sethostname.$(OBJEXT) setrlimit64.$(OBJEXT) \
@USE_LIBTOOL_FALSE@shm_open.$(OBJEXT) shm_unlink.$(OBJEXT) \
@USE_LIBTOOL_FALSE@sig.$(OBJEXT) sigaction.$(OBJEXT) sigqueue.$(OBJEXT) \
@USE_LIBTOOL_FALSE@signal.$(OBJEXT) siglongjmp.$(OBJEXT) \
@USE_LIBTOOL_FALSE@sigset.$(OBJEXT) sigwait.$(OBJEXT) socket.$(OBJEXT) \
@USE_LIBTOOL_FALSE@sleep.$(OBJEXT) stack.$(OBJEXT) strsignal.$(OBJEXT) \
@USE_LIBTOOL_FALSE@sysconf.$(OBJEXT) sysctl.$(OBJEXT) systat.$(OBJEXT) \
@USE_LIBTOOL_FALSE@system.$(OBJEXT) tcdrain.$(OBJEXT) \
@USE_LIBTOOL_FALSE@tcsendbrk.$(OBJEXT) termios.$(OBJEXT) time.$(OBJEXT) \
@USE_LIBTOOL_FALSE@usleep.$(OBJEXT) utimes.$(OBJEXT) vallocr.$(OBJEXT) \
@USE_LIBTOOL_FALSE@wait.$(OBJEXT)
@USE_LIBTOOL_FALSE@ttyname_r.$(OBJEXT) usleep.$(OBJEXT) \
@USE_LIBTOOL_FALSE@utimes.$(OBJEXT) vallocr.$(OBJEXT) wait.$(OBJEXT)
LTLIBRARIES = $(noinst_LTLIBRARIES)
@USE_LIBTOOL_TRUE@liblinux_la_OBJECTS = aio.lo brk.lo calloc.lo \
@USE_LIBTOOL_TRUE@callocr.lo cfreer.lo cfspeed.lo clock_getres.lo \
@USE_LIBTOOL_TRUE@clock_gettime.lo clock_settime.lo flockfile.lo \
@USE_LIBTOOL_TRUE@fpathconf.lo free.lo freer.lo ftok.lo funlockfile.lo \
@USE_LIBTOOL_TRUE@getdate.lo getdate_err.lo gethostname.lo \
@USE_LIBTOOL_TRUE@getoptlong.lo getreent.lo getrlimit64.lo ids.lo \
@USE_LIBTOOL_TRUE@inode.lo io.lo io64.lo ipc.lo linux.lo malign.lo \
@USE_LIBTOOL_TRUE@malignr.lo mallinfor.lo mallocr.lo malloptr.lo \
@USE_LIBTOOL_TRUE@mallstatsr.lo mmap.lo mq_close.lo mq_getattr.lo \
@USE_LIBTOOL_TRUE@mq_notify.lo mq_open.lo mq_receive.lo mq_send.lo \
@USE_LIBTOOL_TRUE@mq_setattr.lo mq_unlink.lo msize.lo msizer.lo \
@USE_LIBTOOL_TRUE@mstats.lo mtrim.lo mtrimr.lo ntp_gettime.lo \
@USE_LIBTOOL_TRUE@clock_gettime.lo clock_settime.lo ctermid.lo \
@USE_LIBTOOL_TRUE@flockfile.lo fpathconf.lo free.lo freer.lo ftok.lo \
@USE_LIBTOOL_TRUE@funlockfile.lo getdate.lo getdate_err.lo \
@USE_LIBTOOL_TRUE@gethostname.lo getoptlong.lo getreent.lo \
@USE_LIBTOOL_TRUE@getrlimit64.lo ids.lo inode.lo io.lo io64.lo ipc.lo \
@USE_LIBTOOL_TRUE@linux.lo malign.lo malignr.lo mallinfor.lo mallocr.lo \
@USE_LIBTOOL_TRUE@malloptr.lo mallstatsr.lo mmap.lo mq_close.lo \
@USE_LIBTOOL_TRUE@mq_getattr.lo mq_notify.lo mq_open.lo mq_receive.lo \
@USE_LIBTOOL_TRUE@mq_send.lo mq_setattr.lo mq_unlink.lo msize.lo \
@USE_LIBTOOL_TRUE@msizer.lo mstats.lo mtrim.lo mtrimr.lo ntp_gettime.lo \
@USE_LIBTOOL_TRUE@pathconf.lo pread.lo pread64.lo process.lo psignal.lo \
@USE_LIBTOOL_TRUE@pvallocr.lo pwrite.lo pwrite64.lo raise.lo realloc.lo \
@USE_LIBTOOL_TRUE@reallocr.lo realpath.lo rename.lo resource.lo \
@USE_LIBTOOL_TRUE@sched.lo select.lo seteuid.lo sethostname.lo \
@USE_LIBTOOL_TRUE@setrlimit64.lo shm_open.lo shm_unlink.lo sig.lo \
@USE_LIBTOOL_TRUE@sigaction.lo sigqueue.lo signal.lo siglongjmp.lo \
@USE_LIBTOOL_TRUE@sigset.lo sigwait.lo socket.lo sleep.lo stack.lo \
@USE_LIBTOOL_TRUE@strsignal.lo sysconf.lo sysctl.lo systat.lo system.lo \
@USE_LIBTOOL_TRUE@tcdrain.lo tcsendbrk.lo termios.lo time.lo usleep.lo \
@USE_LIBTOOL_TRUE@utimes.lo vallocr.lo wait.lo
@USE_LIBTOOL_TRUE@pvallocr.lo pwrite.lo pwrite64.lo raise.lo \
@USE_LIBTOOL_TRUE@readdir64.lo realloc.lo reallocr.lo realpath.lo \
@USE_LIBTOOL_TRUE@rename.lo resource.lo sched.lo select.lo seteuid.lo \
@USE_LIBTOOL_TRUE@sethostname.lo setrlimit64.lo shm_open.lo \
@USE_LIBTOOL_TRUE@shm_unlink.lo sig.lo sigaction.lo sigqueue.lo \
@USE_LIBTOOL_TRUE@signal.lo siglongjmp.lo sigset.lo sigwait.lo \
@USE_LIBTOOL_TRUE@socket.lo sleep.lo stack.lo strsignal.lo sysconf.lo \
@USE_LIBTOOL_TRUE@sysctl.lo systat.lo system.lo tcdrain.lo tcsendbrk.lo \
@USE_LIBTOOL_TRUE@termios.lo time.lo ttyname_r.lo usleep.lo utimes.lo \
@USE_LIBTOOL_TRUE@vallocr.lo wait.lo
CFLAGS = @CFLAGS@
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)

16
newlib/libc/sys/linux/ctermid.c Normal file
View File

@@ -0,0 +1,16 @@
/* ctermid */
#include <stdio.h>
#include <string.h>
static char devname[] = "/dev/tty";
char *
_DEFUN (ctermid, (buf),
char *buf)
{
if (buf == NULL)
return devname;
return strcpy (buf, "/dev/tty");
}

97
newlib/libc/sys/linux/readdir64.c Normal file
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@@ -0,0 +1,97 @@
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* Modified from newlib/libc/posix/readdir.c */
#include <dirent.h>
#include <machine/syscall.h>
#define __NR___getdents64 __NR_getdents64
static _syscall3(int,__getdents64,int,fd,struct dirent64 *,dirp,unsigned int,count)
/*
* get next entry in a directory.
*/
struct dirent64 *
__readdir64 (dirp)
register DIR *dirp; {
register struct dirent64 *dp;
#ifdef HAVE_DD_LOCK
__lock_acquire_recursive(dirp->dd_lock);
#endif
if (dirp->dd_fd == -1)
return NULL;
for (;;) {
if (dirp->dd_loc == 0) {
dirp->dd_size = __getdents64 (dirp->dd_fd,
(void *)dirp->dd_buf,
dirp->dd_len);
if (dirp->dd_size <= 0) {
#ifdef HAVE_DD_LOCK
__lock_release_recursive(dirp->dd_lock);
#endif
return NULL;
}
}
if (dirp->dd_loc >= dirp->dd_size) {
dirp->dd_loc = 0;
continue;
}
dp = (struct dirent64 *)(dirp->dd_buf + dirp->dd_loc);
if ((int)dp & 03) { /* bogus pointer check */
#ifdef HAVE_DD_LOCK
__lock_release_recursive(dirp->dd_lock);
#endif
return NULL;
}
if (dp->d_reclen <= 0 ||
dp->d_reclen > dirp->dd_len + 1 - dirp->dd_loc) {
#ifdef HAVE_DD_LOCK
__lock_release_recursive(dirp->dd_lock);
#endif
return NULL;
}
dirp->dd_loc += dp->d_reclen;
if (dp->d_ino == 0)
continue;
#ifdef HAVE_DD_LOCK
__lock_release_recursive(dirp->dd_lock);
#endif
return (dp);
}
}

2
newlib/libc/sys/linux/sys/stdio.h
View File

@@ -16,4 +16,6 @@
#define getline __getline
#define getdelim __getdelim
char * _EXFUN(ctermid, (char *));
#endif /* _NEWLIB_STDIO_H */

1
newlib/libc/sys/linux/sys/types.h
View File

@@ -144,6 +144,7 @@ typedef long fd_mask;
#define __key_t_defined
#define __off_t_defined
typedef __ino64_t ino64_t;
typedef __uint32_t uintptr_t;
typedef __int32_t intptr_t;

3
newlib/libc/sys/linux/sys/unistd.h
View File

@@ -113,7 +113,8 @@ void _EXFUN(swab, (const void *, void *, ssize_t));
long _EXFUN(sysconf, (int __name ));
pid_t _EXFUN(tcgetpgrp, (int __fildes ));
int _EXFUN(tcsetpgrp, (int __fildes, pid_t __pgrp_id ));
char _EXFUN(*ttyname, (int __fildes ));
char * _EXFUN(ttyname, (int __fildes ));
int _EXFUN(ttyname_r, (int __fildes, char *__buf, size_t __len));
int _EXFUN(unlink, (const char *__path ));
int _EXFUN(vhangup, (void ));
_READ_WRITE_RETURN_TYPE _EXFUN(write, (int __fd, const void *__buf, size_t __nbyte ));

194
newlib/libc/sys/linux/ttyname_r.c Normal file
View File

@@ -0,0 +1,194 @@
/* Copyright (C) 1991,92,93,1995-1999,2000,2001 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; 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 <stdio.h>
#include <stdlib.h>
#include <machine/weakalias.h>
static int getttyname_r (char *buf, size_t buflen,
dev_t mydev, ino64_t myino, int save,
int *dostat);
extern struct dirent64 *__readdir64 (DIR *);
#define __set_errno(x) (errno = (x))
static int
getttyname_r (char *buf, size_t buflen, dev_t mydev, ino64_t myino,
int save, int *dostat)
{
struct stat64 st;
DIR *dirstream;
struct dirent64 *d;
size_t devlen = strlen (buf);
dirstream = opendir (buf);
if (dirstream == NULL)
{
*dostat = -1;
return errno;
}
while ((d = __readdir64 (dirstream)) != NULL)
{
if ((d->d_ino == myino || *dostat)
&& strcmp (d->d_name, "stdin")
&& strcmp (d->d_name, "stdout")
&& strcmp (d->d_name, "stderr"))
{
size_t needed = strlen (d->d_name) + 1;
if (needed > buflen)
{
*dostat = -1;
(void) closedir (dirstream);
__set_errno (ERANGE);
return ERANGE;
}
strncpy (buf + devlen, d->d_name, needed);
if (stat64 (buf, &st) == 0
#ifdef _STATBUF_ST_RDEV
&& S_ISCHR (st.st_mode) && st.st_rdev == mydev
#else
&& d->d_ino == 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 (int fd, char *buf, size_t buflen)
{
char procname[30];
struct stat64 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;
}
/* We try using the /proc filesystem. */
sprintf (procname, "/proc/self/fd/%d", fd);
ret = readlink (procname, buf, buflen - 1);
if (ret != -1 && buf[0] != '[')
{
buf[ret] = '\0';
return 0;
}
if (ret == -1 && errno == ENAMETOOLONG)
{
__set_errno (ERANGE);
return ERANGE;
}
if (fstat64 (fd, &st) < 0)
return errno;
/* Prepare the result buffer. */
memcpy (buf, "/dev/pts/", sizeof ("/dev/pts/"));
buflen -= sizeof ("/dev/pts/") - 1;
if (stat64 (buf, &st1) == 0 && S_ISDIR (st1.st_mode))
{
#ifdef _STATBUF_ST_RDEV
ret = getttyname_r (buf, buflen, st.st_rdev, st.st_ino, save,
&dostat);
#else
ret = getttyname_r (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 (buf, buflen, st.st_rdev, st.st_ino, save,
&dostat);
#else
ret = getttyname_r (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 (buf, buflen, st.st_rdev, st.st_ino,
save, &dostat);
#else
ret = getttyname_r (buf, buflen, st.st_dev, st.st_ino,
save, &dostat);
#endif
}
return ret;
}
weak_alias (__ttyname_r, ttyname_r)