diff options
author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-11-23 19:07:58 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-11-23 19:07:58 +0000 |
commit | 07a3253de2c3f9bc2d96a351680ec72548dadd2d (patch) | |
tree | b4f85e78927202cffe01b194c708c3dd800d8e57 /cpukit/libcsupport/src/seekdir.c | |
parent | Added new tests in support of the file system infrastructure. (diff) | |
download | rtems-07a3253de2c3f9bc2d96a351680ec72548dadd2d.tar.bz2 |
Added base version of file system infrastructure. This includes a major
overhaul of the RTEMS system call interface. This base file system is
the "In-Memory File System" aka IMFS.
The design and implementation was done by the following people:
+ Joel Sherrill (joel@OARcorp.com)
+ Jennifer Averett (jennifer@OARcorp.com)
+ Steve "Mr Mount" Salitasc (salitasc@OARcorp.com)
+ Kerwin Wade (wade@OARcorp.com)
PROBLEMS
========
+ It is VERY likely that merging this will break the UNIX port. This
can/will be fixed.
+ There is likely some reentrancy/mutual exclusion needed.
+ Eventually, there should be a "mini-IMFS" description table to
eliminate links, symlinks, etc to save memory. All you need to
have "classic RTEMS" functionality is technically directories
and device IO. All the rest could be left out to save memory.
Diffstat (limited to '')
-rw-r--r-- | cpukit/libcsupport/src/seekdir.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/cpukit/libcsupport/src/seekdir.c b/cpukit/libcsupport/src/seekdir.c index e591adbb9f..80802b56c6 100644 --- a/cpukit/libcsupport/src/seekdir.c +++ b/cpukit/libcsupport/src/seekdir.c @@ -1,7 +1,14 @@ /* * seekdir() - POSIX 1003.1b - XXX * - * $Id$ + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * */ #include <sys/param.h> @@ -12,10 +19,20 @@ #include <errno.h> void seekdir( - DIR *dirp, - long loc + DIR *dirp, + long loc ) { - errno = ENOSYS; - return -1; + off_t status; + + status = lseek( dirp->dd_fd, loc, SEEK_SET ); + + /* + * This is not a nice way to error out, but we have no choice here. + */ + if( status == -1 ) + return; + + dirp->dd_loc = 0; + } |