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Clean up POSIX.1 implementation of truncate.

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This commit is contained in:
Roland McGrath
2013-05-06 14:56:13 -07:00
parent 9ea3513c91
commit c74058300c
2 changed files with 17 additions and 7 deletions
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17
sysdeps/posix/truncate.c
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@ -1,4 +1,5 @@
/* Copyright (C) 1995-2013 Free Software Foundation, Inc.
/* Truncate a file given by name. Generic POSIX.1 version.
Copyright (C) 1995-2013 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
@ -22,20 +23,22 @@
/* Truncate PATH to LENGTH bytes. */
int
truncate (path, length)
const char *path;
off_t length;
__truncate (const char *path, off_t length)
{
int fd, ret, save;
fd = open (path, O_WRONLY);
fd = __open (path, O_WRONLY | (length == 0 ? O_TRUNC : 0));
if (fd < 0)
return -1;
ret = ftruncate (fd, length);
if (length == 0)
ret = 0;
else
ret = __ftruncate (fd, length);
save = errno;
(void) close (fd);
(void) __close (fd);
if (ret < 0)
__set_errno (save);
return ret;
}
weak_alias (__truncate, truncate)