1#include <unistd.h> 2#include <errno.h> 3#include <fcntl.h> 4#include "syscall.h" 5 6void __procfdname(char *, unsigned); 7 8int fchown(int fd, uid_t uid, gid_t gid) 9{ 10 int ret = __syscall(SYS_fchown, fd, uid, gid); 11 if (ret != -EBADF || __syscall(SYS_fcntl, fd, F_GETFD) < 0) 12 return __syscall_ret(ret); 13 14 char buf[15+3*sizeof(int)]; 15 __procfdname(buf, fd); 16#ifdef SYS_chown 17 return syscall(SYS_chown, buf, uid, gid); 18#else 19 return syscall(SYS_fchownat, AT_FDCWD, buf, uid, gid); 20#endif 21 22} 23