diff options
Diffstat (limited to 'sysdeps/posix/pathconf.c')
| -rw-r--r-- | sysdeps/posix/pathconf.c | 154 |
1 files changed, 133 insertions, 21 deletions
diff --git a/sysdeps/posix/pathconf.c b/sysdeps/posix/pathconf.c index 9539957777..c06906679d 100644 --- a/sysdeps/posix/pathconf.c +++ b/sysdeps/posix/pathconf.c @@ -1,40 +1,152 @@ /* Copyright (C) 1991, 1995, 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. + 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 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. + 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., 675 Mass Ave, -Cambridge, MA 02139, USA. */ + 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 <stddef.h> #include <unistd.h> +#include <limits.h> #include <fcntl.h> +#include <sys/statfs.h> /* Get file-specific information about PATH. */ long int __pathconf (const char *path, int name) { - int fd = open (path, 0); - if (fd >= 0) + if (path[0] == '\0') { - long int value = __fpathconf (fd, name); - int save = errno; - (void) close (fd); - __set_errno (save); - return value; + __set_errno (ENOENT); + return -1; } - return -1L; + + switch (name) + { + default: + __set_errno (EINVAL); + return -1; + + case _PC_LINK_MAX: +#ifdef LINK_MAX + return LINK_MAX; +#else + __set_errno (ENOSYS); + return -1; +#endif + + case _PC_MAX_CANON: +#ifdef MAX_CANON + return MAX_CANON; +#else + __set_errno (ENOSYS); + return -1; +#endif + + case _PC_MAX_INPUT: +#ifdef MAX_INPUT + return MAX_INPUT; +#else + __set_errno (ENOSYS); + return -1; +#endif + + case _PC_NAME_MAX: +#ifdef NAME_MAX + { + struct statfs buf; + + if (__statfs (path, &buf) < 0) + return errno == ENOSYS ? NAME_MAX : -1; + else + return buf.f_namelen; + } +#else + __set_errno (ENOSYS); + return -1; +#endif + + case _PC_PATH_MAX: +#ifdef PATH_MAX + return PATH_MAX; +#else + __set_errno (ENOSYS); + return -1; +#endif + + case _PC_PIPE_BUF: +#ifdef PIPE_BUF + return PIPE_BUF; +#else + __set_errno (ENOSYS); + return -1; +#endif + + case _PC_CHOWN_RESTRICTED: +#ifdef _POSIX_CHOWN_RESTRICTED + return _POSIX_CHOWN_RESTRICTED; +#else + return -1; +#endif + + case _PC_NO_TRUNC: +#ifdef _POSIX_NO_TRUNC + return _POSIX_NO_TRUNC; +#else + return -1; +#endif + + case _PC_VDISABLE: +#ifdef _POSIX_VDISABLE + return _POSIX_VDISABLE; +#else + return -1; +#endif + + case _PC_SYNC_IO: +#ifdef _POSIX_SYNC_IO + return _POSIX_SYNC_IO; +#else + return -1; +#endif + + case _PC_ASYNC_IO: +#ifdef _POSIX_ASYNC_IO + return _POSIX_ASYNC_IO; +#else + return -1; +#endif + + case _PC_PRIO_IO: +#ifdef _POSIX_PRIO_IO + return _POSIX_PRIO_IO; +#else + return -1; +#endif + + case _PC_SOCK_MAXBUF: +#ifdef SOCK_MAXBUF + return SOCK_MAXBUF; +#else + __set_errno (ENOSYS); + return -1; +#endif + } + + __set_errno (ENOSYS); + return -1; } weak_alias (__pathconf, pathconf) |