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-rw-r--r--libc/unistd/pathconf.c244
1 files changed, 94 insertions, 150 deletions
diff --git a/libc/unistd/pathconf.c b/libc/unistd/pathconf.c
index f41cf69ba..8d6e7ba40 100644
--- a/libc/unistd/pathconf.c
+++ b/libc/unistd/pathconf.c
@@ -1,5 +1,5 @@
-/* pathconf -- adjusted for busybox
- Copyright (C) 1991,95,96,98,99,2000,2001 Free Software Foundation, Inc.
+/* Copyright (C) 1991,1995,1996,1998,2000,2001,2003
+ 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
@@ -17,15 +17,12 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+/* pathconf -- adjusted for busybox */
/* It would be great it this could be implemented using fpathconf,
* but that doesn't work out very well (think FIFOs and sockets) */
#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>
@@ -34,219 +31,166 @@
#include <sys/statfs.h>
//#include <sys/statvfs.h>
-//#include "linux_fsinfo.h"
-
libc_hidden_proto(statfs)
libc_hidden_proto(stat)
-/* 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 pathconf(const char *path, int name)
+/* Get file-specific information about PATH. */
+long int
+pathconf (const char *path, int name)
{
- if (path[0] == '\0')
+ if (path[0] == '\0')
{
- __set_errno (ENOENT);
- return -1;
+ __set_errno (ENOENT);
+ return -1;
}
- if (name == _PC_LINK_MAX)
+ switch (name)
{
- /* Cut some corners */
-#if 0
- struct statfs fsbuf;
-
- /* Determine the filesystem type. */
- if (statfs (path, &fsbuf) < 0)
- {
- if (errno == ENOSYS)
- /* not possible, return the default value. */
- return LINUX_LINK_MAX;
-
- /* Some error occured. */
- return -1;
- }
+ default:
+ __set_errno (EINVAL);
+ 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;
- }
+ case _PC_LINK_MAX:
+#ifdef LINK_MAX
+ return LINK_MAX;
#else
- return LINUX_LINK_MAX;
+ return -1;
#endif
- }
-
- switch (name)
- {
- default:
- __set_errno (EINVAL);
- return -1;
- case _PC_MAX_CANON:
+ case _PC_MAX_CANON:
#ifdef MAX_CANON
- return MAX_CANON;
+ return MAX_CANON;
#else
- return -1;
+ return -1;
#endif
- case _PC_MAX_INPUT:
+ case _PC_MAX_INPUT:
#ifdef MAX_INPUT
- return MAX_INPUT;
+ return MAX_INPUT;
#else
- return -1;
+ return -1;
#endif
- case _PC_NAME_MAX:
+ case _PC_NAME_MAX:
#ifdef NAME_MAX
- {
- struct statfs buf;
- int save_errno = errno;
-
- if (statfs (path, &buf) < 0)
- {
- if (errno == ENOSYS)
- {
- errno = save_errno;
- return NAME_MAX;
- }
- return -1;
- }
- else
- {
+ {
+ struct statfs buf;
+ int save_errno = errno;
+
+ if (statfs (path, &buf) < 0)
+ {
+ if (errno == ENOSYS)
+ {
+ errno = save_errno;
+ return NAME_MAX;
+ }
+ return -1;
+ }
+ else
+ {
#ifdef _STATFS_F_NAMELEN
- return buf.f_namelen;
+ return buf.f_namelen;
#else
# ifdef _STATFS_F_NAME_MAX
- return buf.f_name_max;
+ return buf.f_name_max;
# else
- return NAME_MAX;
+ return NAME_MAX;
# endif
#endif
- }
- }
+ }
+ }
#else
- return -1;
+ return -1;
#endif
- case _PC_PATH_MAX:
+ case _PC_PATH_MAX:
#ifdef PATH_MAX
- return PATH_MAX;
+ return PATH_MAX;
#else
- return -1;
+ return -1;
#endif
- case _PC_PIPE_BUF:
+ case _PC_PIPE_BUF:
#ifdef PIPE_BUF
- return PIPE_BUF;
+ return PIPE_BUF;
#else
- return -1;
+ return -1;
#endif
- case _PC_CHOWN_RESTRICTED:
+ case _PC_CHOWN_RESTRICTED:
#ifdef _POSIX_CHOWN_RESTRICTED
- return _POSIX_CHOWN_RESTRICTED;
+ return _POSIX_CHOWN_RESTRICTED;
#else
- return -1;
+ return -1;
#endif
- case _PC_NO_TRUNC:
+ case _PC_NO_TRUNC:
#ifdef _POSIX_NO_TRUNC
- return _POSIX_NO_TRUNC;
+ return _POSIX_NO_TRUNC;
#else
- return -1;
+ return -1;
#endif
- case _PC_VDISABLE:
+ case _PC_VDISABLE:
#ifdef _POSIX_VDISABLE
- return _POSIX_VDISABLE;
+ return _POSIX_VDISABLE;
#else
- return -1;
+ return -1;
#endif
- case _PC_SYNC_IO:
+ case _PC_SYNC_IO:
#ifdef _POSIX_SYNC_IO
- return _POSIX_SYNC_IO;
+ return _POSIX_SYNC_IO;
#else
- return -1;
+ return -1;
#endif
- case _PC_ASYNC_IO:
-#if defined _POSIX_ASYNC_IO && defined __UCLIBC_HAS_LFS__
- {
- /* AIO is only allowed on regular files and block devices. */
- struct stat st;
-
- if (stat (path, &st) < 0 || (! S_ISREG (st.st_mode) && ! S_ISBLK (st.st_mode)))
- return -1;
- else
- return 1;
- }
+ case _PC_ASYNC_IO:
+#if defined _POSIX_ASYNC_IO && defined __UCLIBC_HAS_LFS__
+ {
+ /* AIO is only allowed on regular files and block devices. */
+ struct stat st;
+
+ if (stat (path, &st) < 0
+ || (! S_ISREG (st.st_mode) && ! S_ISBLK (st.st_mode)))
+ return -1;
+ else
+ return 1;
+ }
#else
- return -1;
+ return -1;
#endif
- case _PC_PRIO_IO:
+ case _PC_PRIO_IO:
#ifdef _POSIX_PRIO_IO
- return _POSIX_PRIO_IO;
+ return _POSIX_PRIO_IO;
#else
- return -1;
+ return -1;
#endif
- case _PC_SOCK_MAXBUF:
+ case _PC_SOCK_MAXBUF:
#ifdef SOCK_MAXBUF
- return SOCK_MAXBUF;
+ return SOCK_MAXBUF;
#else
- return -1;
+ return -1;
#endif
- case _PC_FILESIZEBITS:
+ case _PC_FILESIZEBITS:
#ifdef FILESIZEBITS
- return FILESIZEBITS;
+ return FILESIZEBITS;
#else
- /* We let platforms with larger file sizes overwrite this value. */
- return 32;
+ /* 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;
+ /* 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;
}
-
}
-
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