diff options
Diffstat (limited to 'sysdeps/posix/waitid.c')
| -rw-r--r-- | sysdeps/posix/waitid.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/sysdeps/posix/waitid.c b/sysdeps/posix/waitid.c index e388d173f4..76a3b1d660 100644 --- a/sysdeps/posix/waitid.c +++ b/sysdeps/posix/waitid.c @@ -1,5 +1,5 @@ /* Pseudo implementation of waitid. - Copyright (C) 1997, 1998, 2002, 2003 Free Software Foundation, Inc. + Copyright (C) 1997, 1998, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1997. @@ -28,8 +28,15 @@ #include <sysdep-cancel.h> +#ifdef DO_WAITID +# define OUR_WAITID DO_WAITID +#elif !defined NO_DO_WAITID +# define OUR_WAITID do_waitid +#endif + +#ifdef OUR_WAITID static int -do_waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options) +OUR_WAITID (idtype_t idtype, id_t id, siginfo_t *infop, int options) { pid_t pid, child; int status; @@ -66,6 +73,22 @@ do_waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options) return -1; } + /* This emulation using waitpid cannot support the waitid modes in which + we do not reap the child, or match only stopped and not dead children. */ + if (0 +#ifdef WNOWAIT + || (options & WNOWAIT) +#endif +#ifdef WEXITED + || ((options & (WEXITED|WSTOPPED|WCONTINUED)) + != (WEXITED | (options & WUNTRACED))) +#endif + ) + { + __set_errno (ENOTSUP); + return -1; + } + /* Note the waitid() is a cancellation point. But since we call waitpid() which itself is a cancellation point we do not have to do anything here. */ @@ -118,6 +141,7 @@ do_waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options) return 0; } +#endif int |