minix/lib/libc/compat/gen/compat_readdir.c
Lionel Sambuc f14fb60209 Libraries updates and cleanup
* Updating common/lib
 * Updating lib/csu
 * Updating lib/libc
 * Updating libexec/ld.elf_so
 * Corrected test on __minix in featuretest to actually follow the
   meaning of the comment.
 * Cleaned up _REENTRANT-related defintions.
 * Disabled -D_REENTRANT for libfetch
 * Removing some unneeded __NBSD_LIBC defines and tests

Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
2013-01-14 11:36:26 +01:00

63 lines
1.5 KiB
C

/* $NetBSD: compat_readdir.c,v 1.3 2012/02/08 12:10:17 mbalmer Exp $ */
#define __LIBC12_SOURCE__
#include "namespace.h"
#include <sys/param.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <limits.h>
#include <compat/include/dirent.h>
#ifdef __weak_alias
__weak_alias(readdir,_readdir)
__weak_alias(readdir_r,_readdir_r)
#endif
#ifdef __warn_references
__warn_references(readdir,
"warning: reference to compatibility readdir(); include <dirent.h> for correct reference")
__warn_references(readdir_r,
"warning: reference to compatibility readdir_r(); include <dirent.h> for correct reference")
#endif
static struct dirent12 *
direnttodirent12(struct dirent12 *d12, const struct dirent *d)
{
if (d == NULL)
return NULL;
if (d->d_fileno > UINT_MAX || d->d_namlen >= sizeof(d12->d_name)) {
errno = ERANGE;
return NULL;
}
d12->d_fileno = (uint32_t)d->d_fileno;
d12->d_reclen = (uint16_t)d->d_reclen;
d12->d_namlen = (uint8_t)MIN(d->d_namlen, sizeof(d->d_name) - 1);
d12->d_type = (uint8_t)d->d_type;
memcpy(d12->d_name, d->d_name, (size_t)d12->d_namlen);
d12->d_name[d12->d_namlen] = '\0';
return d12;
}
struct dirent12 *
readdir(DIR *dirp)
{
static struct dirent12 d12;
return direnttodirent12(&d12, __readdir30(dirp));
}
int
readdir_r(DIR *dirp, struct dirent12 *entry, struct dirent12 **result)
{
int error;
struct dirent e, *ep;
if ((error = __readdir_r30(dirp, &e, &ep)) != 0)
return error;
*result = entry;
(void)direnttodirent12(entry, &e);
return 0;
}