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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
#include <unistd.h>
#include "nfslib.h"
#include "xstat.h"
#ifdef HAVE_FSTATAT
#ifdef HAVE_STATX
static void
statx_copy(struct stat *stbuf, const struct statx *stxbuf)
{
stbuf->st_dev = makedev(stxbuf->stx_dev_major, stxbuf->stx_dev_minor);
stbuf->st_ino = stxbuf->stx_ino;
stbuf->st_mode = stxbuf->stx_mode;
stbuf->st_nlink = stxbuf->stx_nlink;
stbuf->st_uid = stxbuf->stx_uid;
stbuf->st_gid = stxbuf->stx_gid;
stbuf->st_rdev = makedev(stxbuf->stx_rdev_major, stxbuf->stx_rdev_minor);
stbuf->st_size = stxbuf->stx_size;
stbuf->st_blksize = stxbuf->stx_blksize;
stbuf->st_blocks = stxbuf->stx_blocks;
stbuf->st_atim.tv_sec = stxbuf->stx_atime.tv_sec;
stbuf->st_atim.tv_nsec = stxbuf->stx_atime.tv_nsec;
stbuf->st_mtim.tv_sec = stxbuf->stx_mtime.tv_sec;
stbuf->st_mtim.tv_nsec = stxbuf->stx_mtime.tv_nsec;
stbuf->st_ctim.tv_sec = stxbuf->stx_ctime.tv_sec;
stbuf->st_ctim.tv_nsec = stxbuf->stx_ctime.tv_nsec;
}
static int
statx_do_stat(int fd, const char *pathname, struct stat *statbuf, int flags)
{
static int statx_supported = 1;
struct statx stxbuf;
int ret;
if (statx_supported) {
ret = statx(fd, pathname, flags,
STATX_BASIC_STATS,
&stxbuf);
if (ret == 0) {
statx_copy(statbuf, &stxbuf);
return 0;
}
/* glibc emulation doesn't support AT_STATX_DONT_SYNC */
if (errno == EINVAL)
errno = ENOSYS;
if (errno == ENOSYS)
statx_supported = 0;
} else
errno = ENOSYS;
return -1;
}
static int
statx_stat_nosync(int fd, const char *pathname, struct stat *statbuf, int flags)
{
return statx_do_stat(fd, pathname, statbuf, flags | AT_STATX_DONT_SYNC);
}
#else
static int
statx_stat_nosync(int UNUSED(fd), const char *UNUSED(pathname), struct stat *UNUSED(statbuf), int UNUSED(flags))
{
errno = ENOSYS;
return -1;
}
#endif /* HAVE_STATX */
int xlstat(const char *pathname, struct stat *statbuf)
{
if (statx_stat_nosync(AT_FDCWD, pathname, statbuf, AT_NO_AUTOMOUNT|
AT_SYMLINK_NOFOLLOW) == 0)
return 0;
else if (errno != ENOSYS)
return -1;
errno = 0;
return fstatat(AT_FDCWD, pathname, statbuf, AT_NO_AUTOMOUNT |
AT_SYMLINK_NOFOLLOW);
}
int xstat(const char *pathname, struct stat *statbuf)
{
if (statx_stat_nosync(AT_FDCWD, pathname, statbuf, AT_NO_AUTOMOUNT) == 0)
return 0;
else if (errno != ENOSYS)
return -1;
errno = 0;
return fstatat(AT_FDCWD, pathname, statbuf, AT_NO_AUTOMOUNT);
}
#else
int xlstat(const char *pathname, struct stat *statbuf)
{
return lstat(pathname, statbuf);
}
int xstat(const char *pathname, struct stat *statbuf)
{
return stat(pathname, statbuf);
}
#endif
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