diff options
Diffstat (limited to 'libc/unistd')
| -rw-r--r-- | libc/unistd/Makefile | 2 | ||||
| -rw-r--r-- | libc/unistd/fpathconf.c | 264 | ||||
| -rw-r--r-- | libc/unistd/pathconf.c | 48 |
3 files changed, 289 insertions, 25 deletions
diff --git a/libc/unistd/Makefile b/libc/unistd/Makefile index 5b7e8df34..33905190f 100644 --- a/libc/unistd/Makefile +++ b/libc/unistd/Makefile @@ -26,7 +26,7 @@ DIRS:= CSRC=execl.c execlp.c execv.c execvep.c execvp.c execle.c getcwd.c getopt.c \ sleep.c getpass.c sysconf_src.c getopt_vars.c getlogin.c fpathconf.c \ - confstr.c + confstr.c pathconf.c ifeq ($(strip $(HAS_MMU)),true) CSRC+=daemon.c endif diff --git a/libc/unistd/fpathconf.c b/libc/unistd/fpathconf.c index 140b94fdb..f896e934b 100644 --- a/libc/unistd/fpathconf.c +++ b/libc/unistd/fpathconf.c @@ -1,30 +1,246 @@ -/* vi: set sw=4 ts=4: */ -/* - * fpathconf for uClibc - * - * Copyright (C) 2001 by Lineo, inc. Written by - * Erik Andersen * <andersen@lineo.com>, <andersee@debian.org> - * - * This program 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. - * - * This program 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 this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ +/* fpathconf -- adjusted for busybox + Copyright (C) 1991,95,96,98,99,2000,2001 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 <unistd.h> +#include <limits.h> +#include <sys/statfs.h> +#include <errno.h> +#include <stddef.h> +#include <unistd.h> +#include <limits.h> +#include <fcntl.h> +#include <sys/stat.h> +#include <sys/statfs.h> +//#include <sys/statvfs.h> + +//#include "linux_fsinfo.h" -long fpathconf(int filedes, int name) -{ + +/* The Linux kernel headers mention this as a kind of generic value. */ +#define LINUX_LINK_MAX 127 + + +/* Get file-specific information about descriptor FD. */ +long int fpathconf(int fd, int name) +{ + if (fd < 0) + { + __set_errno (EBADF); return -1; + } + + if (name == _PC_LINK_MAX) + { + /* Cut some corners */ +#if 0 + struct statfs fsbuf; + + /* Determine the filesystem type. */ + if (fstatfs (fd, &fsbuf) < 0) + { + if (errno == ENOSYS) + /* not possible, return the default value. */ + return LINUX_LINK_MAX; + + /* Some error occured. */ + return -1; + } + + switch (fsbuf.f_type) + { + case EXT2_SUPER_MAGIC: + return EXT2_LINK_MAX; + + case MINIX_SUPER_MAGIC: + case MINIX_SUPER_MAGIC2: + return MINIX_LINK_MAX; + + case MINIX2_SUPER_MAGIC: + case MINIX2_SUPER_MAGIC2: + return MINIX2_LINK_MAX; + + case XENIX_SUPER_MAGIC: + return XENIX_LINK_MAX; + + case SYSV4_SUPER_MAGIC: + case SYSV2_SUPER_MAGIC: + return SYSV_LINK_MAX; + + case COH_SUPER_MAGIC: + return COH_LINK_MAX; + + case UFS_MAGIC: + case UFS_CIGAM: + return UFS_LINK_MAX; + + case REISERFS_SUPER_MAGIC: + return REISERFS_LINK_MAX; + + default: + return LINUX_LINK_MAX; + } +#else + return LINUX_LINK_MAX; +#endif + } + + switch (name) + { + default: + __set_errno (EINVAL); + return -1; + + case _PC_MAX_CANON: +#ifdef MAX_CANON + return MAX_CANON; +#else + return -1; +#endif + + case _PC_MAX_INPUT: +#ifdef MAX_INPUT + return MAX_INPUT; +#else + return -1; +#endif + + case _PC_NAME_MAX: +#ifdef NAME_MAX + { + struct statfs buf; + int save_errno = errno; + + if (fstatfs (fd, &buf) < 0) + { + if (errno == ENOSYS) + { + errno = save_errno; + return NAME_MAX; + } + return -1; + } + else + { +#ifdef _STATFS_F_NAMELEN + return buf.f_namelen; +#else +# ifdef _STATFS_F_NAME_MAX + return buf.f_name_max; +# else + return NAME_MAX; +# endif +#endif + } + } +#else + return -1; +#endif + + case _PC_PATH_MAX: +#ifdef PATH_MAX + return PATH_MAX; +#else + return -1; +#endif + + case _PC_PIPE_BUF: +#ifdef PIPE_BUF + return PIPE_BUF; +#else + 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: +#if defined _POSIX_ASYNC_IO && defined __UCLIBC_HAVE_LFS__ + { + /* AIO is only allowed on regular files and block devices. */ + struct stat st; + + if (fstat (fd, &st) < 0 || (! S_ISREG (st.st_mode) && ! S_ISBLK (st.st_mode))) + return -1; + else + return 1; + } +#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 + return -1; +#endif + + case _PC_FILESIZEBITS: +#ifdef FILESIZEBITS + return FILESIZEBITS; +#else + /* We let platforms with larger file sizes overwrite this value. */ + return 32; +#endif + + /* Be lazy -- skip these */ + case _PC_REC_INCR_XFER_SIZE: + case _PC_REC_MAX_XFER_SIZE: + case _PC_REC_MIN_XFER_SIZE: + case _PC_REC_XFER_ALIGN: + case _PC_ALLOC_SIZE_MIN: + case _PC_SYMLINK_MAX: + return -1; + } + } diff --git a/libc/unistd/pathconf.c b/libc/unistd/pathconf.c new file mode 100644 index 000000000..64ed79531 --- /dev/null +++ b/libc/unistd/pathconf.c @@ -0,0 +1,48 @@ +/* pathconf -- adjusted for busybox + Copyright (C) 1991,95,96,98,99,2000,2001 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 <unistd.h> +#include <limits.h> +#include <errno.h> +#include <stddef.h> +#include <unistd.h> +#include <limits.h> +#include <fcntl.h> + + +/* Get file-specific information about descriptor FD. */ +long int pathconf(const char *path, int name) +{ + int fd; + + if (path[0] == '\0') + { + __set_errno (ENOENT); + return -1; + } + + fd = open(path, O_RDONLY); + if (fd < 0) { + __set_errno (ENOENT); + return -1; + } + return (fpathconf(fd, name)); +} + |