diff options
Diffstat (limited to 'sysdeps/generic/waitpid.c')
-rw-r--r-- | sysdeps/generic/waitpid.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sysdeps/generic/waitpid.c b/sysdeps/generic/waitpid.c new file mode 100644 index 0000000..9c7736e --- /dev/null +++ b/sysdeps/generic/waitpid.c @@ -0,0 +1,53 @@ +/* Copyright (C) 1991,95,96,97,2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <sys/wait.h> +#include <sys/types.h> + + +/* Wait for a child matching PID to die. + If PID is greater than 0, match any process whose process ID is PID. + If PID is (pid_t) -1, match any process. + If PID is (pid_t) 0, match any process with the + same process group as the current process. + If PID is less than -1, match any process whose + process group is the absolute value of PID. + If the WNOHANG bit is set in OPTIONS, and that child + is not already dead, return (pid_t) 0. If successful, + return PID and store the dead child's status in STAT_LOC. + Return (pid_t) -1 for errors. If the WUNTRACED bit is set in OPTIONS, + return status for stopped children; otherwise don't. */ +pid_t +__libc_waitpid (pid_t pid, int *stat_loc, int options) +{ + if ((options & ~(WNOHANG|WUNTRACED)) != 0) + { + __set_errno (EINVAL); + return (pid_t) -1; + } + + __set_errno (ENOSYS); + return (pid_t) -1; +} +weak_alias (__libc_waitpid, __waitpid) +libc_hidden_weak (__waitpid) +weak_alias (__libc_waitpid, waitpid) + +stub_warning (waitpid) +#include <stub-tag.h> |