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Diffstat (limited to 'cpukit/libcsupport/src/truncate.c')
-rw-r--r-- | cpukit/libcsupport/src/truncate.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/truncate.c b/cpukit/libcsupport/src/truncate.c new file mode 100644 index 0000000000..7a0a98b4bd --- /dev/null +++ b/cpukit/libcsupport/src/truncate.c @@ -0,0 +1,43 @@ +/* + * truncate() - Truncate a File to the Specified Length + * + * This routine is not defined in the POSIX 1003.1b standard but is + * commonly supported on most UNIX and POSIX systems. It is provided + * for compatibility. + * + * COPYRIGHT (c) 1989-1999. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> + +int truncate( + const char *path, + off_t length +) +{ + int status; + int fd; + + fd = open( path, O_WRONLY ); + if ( fd == -1 ) + return -1; + + status = ftruncate( fd, length ); + + (void) close( fd ); + + return status; +} |