freebsd-nq/lib/libc/gen/readdir-compat11.c
John Baldwin c1920558b3 Clean up the vcs ID strings in libc's gen/ directory.
- Move CSRG IDs into __SCCSID().
- When a file has been copied, consistently use 'From: <tag>' for strings
  referencing the version of the source file copied from in the license
  block comment.
- Some of the 'From:' tags were using $FreeBSD$ that was being expanded on
  each checkout.  Fix those to hardcode the FreeBSD tag from the file that
  was copied at the time of the copy.
- When multiple strings are present list them in "chronological" order,
  so CSRG (__SCCSID) before FreeBSD (__FBSDID).  If a file came from
  OtherBSD and contains a CSRG ID from the OtherBSD file, use the order
  CSRG -> OtherBSD -> FreeBSD.

Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D15831
2018-07-03 17:31:45 +00:00

118 lines
3.6 KiB
C

/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From: @(#)readdir.c 8.3 (Berkeley) 9/29/94
* From: FreeBSD: head/lib/libc/gen/readdir.c 314436 2017-02-28 23:42:47Z imp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "namespace.h"
#include <sys/param.h>
#define _WANT_FREEBSD11_DIRENT
#include <dirent.h>
#include <errno.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include "un-namespace.h"
#include "libc_private.h"
#include "gen-private.h"
#include "telldir.h"
#include "gen-compat.h"
static bool
freebsd11_cvtdirent(struct freebsd11_dirent *dstdp, struct dirent *srcdp)
{
if (srcdp->d_namlen >= sizeof(dstdp->d_name))
return (false);
dstdp->d_type = srcdp->d_type;
dstdp->d_namlen = srcdp->d_namlen;
dstdp->d_fileno = srcdp->d_fileno; /* truncate */
dstdp->d_reclen = FREEBSD11_DIRSIZ(dstdp);
bcopy(srcdp->d_name, dstdp->d_name, dstdp->d_namlen);
bzero(dstdp->d_name + dstdp->d_namlen,
dstdp->d_reclen - offsetof(struct freebsd11_dirent, d_name) -
dstdp->d_namlen);
return (true);
}
struct freebsd11_dirent *
freebsd11_readdir(DIR *dirp)
{
struct freebsd11_dirent *dstdp;
struct dirent *dp;
if (__isthreaded)
_pthread_mutex_lock(&dirp->dd_lock);
dp = _readdir_unlocked(dirp, RDU_SKIP);
if (dp != NULL) {
if (dirp->dd_compat_de == NULL)
dirp->dd_compat_de = malloc(sizeof(struct
freebsd11_dirent));
if (freebsd11_cvtdirent(dirp->dd_compat_de, dp))
dstdp = dirp->dd_compat_de;
else
dstdp = NULL;
} else
dstdp = NULL;
if (__isthreaded)
_pthread_mutex_unlock(&dirp->dd_lock);
return (dstdp);
}
int
freebsd11_readdir_r(DIR *dirp, struct freebsd11_dirent *entry,
struct freebsd11_dirent **result)
{
struct dirent xentry, *xresult;
int error;
error = __readdir_r(dirp, &xentry, &xresult);
if (error != 0)
return (error);
if (xresult != NULL) {
if (freebsd11_cvtdirent(entry, &xentry))
*result = entry;
else /* should not happen due to RDU_SHORT */
*result = NULL;
} else
*result = NULL;
return (0);
}
__sym_compat(readdir, freebsd11_readdir, FBSD_1.0);
__sym_compat(readdir_r, freebsd11_readdir_r, FBSD_1.0);