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#define _BSD_SOURCE
#include <sys/stat.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include "syscall.h"
int fstatat(int fd, const char *restrict path, struct stat *restrict st, int flag)
{
int ret;
if (flag==AT_EMPTY_PATH && fd>=0 && !*path) {
ret = __syscall(SYS_fstat, fd, st);
if (ret==-EBADF && __syscall(SYS_fcntl, fd, F_GETFD)>=0) {
ret = __syscall(SYS_fstatat, fd, path, st, flag);
if (ret==-EINVAL) {
char buf[15+3*sizeof(int)];
__procfdname(buf, fd);
#ifdef SYS_stat
ret = __syscall(SYS_stat, buf, st);
#else
ret = __syscall(SYS_fstatat, AT_FDCWD, buf, st, 0);
#endif
}
}
}
#ifdef SYS_lstat
else if ((fd == AT_FDCWD || *path=='/') && flag==AT_SYMLINK_NOFOLLOW)
ret = __syscall(SYS_lstat, path, st);
#endif
#ifdef SYS_stat
else if ((fd == AT_FDCWD || *path=='/') && !flag)
ret = __syscall(SYS_stat, path, st);
#endif
else ret = __syscall(SYS_fstatat, fd, path, st, flag);
return __syscall_ret(ret);
}
weak_alias(fstatat, fstatat64);
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