diff options
Diffstat (limited to 'REORG.TODO/sysdeps/posix/truncate.c')
-rw-r--r-- | REORG.TODO/sysdeps/posix/truncate.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/posix/truncate.c b/REORG.TODO/sysdeps/posix/truncate.c new file mode 100644 index 0000000000..24e099c046 --- /dev/null +++ b/REORG.TODO/sysdeps/posix/truncate.c @@ -0,0 +1,44 @@ +/* Truncate a file given by name. Generic POSIX.1 version. + Copyright (C) 1995-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#include <sys/types.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> + +/* Truncate PATH to LENGTH bytes. */ +int +__truncate (const char *path, off_t length) +{ + int fd, ret, save; + + fd = __open (path, O_WRONLY | (length == 0 ? O_TRUNC : 0)); + if (fd < 0) + return -1; + + if (length == 0) + ret = 0; + else + ret = __ftruncate (fd, length); + save = errno; + (void) __close (fd); + if (ret < 0) + __set_errno (save); + return ret; +} +weak_alias (__truncate, truncate) |