src/unistd/fchown.c

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