diff options
Diffstat (limited to 'libc/sysdeps/linux/common/waitid.c')
| -rw-r--r-- | libc/sysdeps/linux/common/waitid.c | 58 |
1 files changed, 17 insertions, 41 deletions
diff --git a/libc/sysdeps/linux/common/waitid.c b/libc/sysdeps/linux/common/waitid.c index c8115f9a5..58f467320 100644 --- a/libc/sysdeps/linux/common/waitid.c +++ b/libc/sysdeps/linux/common/waitid.c @@ -8,43 +8,19 @@ #include <features.h> #if defined __USE_SVID || defined __USE_XOPEN -# include <string.h> -# include <sys/types.h> -# include <sys/wait.h> -# include <sys/syscall.h> - -# ifdef __NR_waitid -# ifdef __UCLIBC_HAS_THREADS_NATIVE__ -# include <sysdep-cancel.h> -# else -# define SINGLE_THREAD_P 1 -# endif - -/* The waitid() POSIX interface takes 4 arguments, but the kernel function - * actually takes 5. The fifth is a pointer to struct rusage. Make sure - * we pass NULL rather than letting whatever was in the register bleed up. - */ -#define __NR_waitid5 __NR_waitid -static __always_inline -_syscall5(int, waitid5, idtype_t, idtype, id_t, id, siginfo_t*, infop, - int, options, struct rusage*, ru) -# endif +#include <sys/syscall.h> +#include <sys/wait.h> +#include <cancel.h> +#ifndef __NR_waitid +# include <string.h> +#endif -int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options) +static int __NC(waitid)(idtype_t idtype, id_t id, siginfo_t *infop, int options) { -# ifdef __NR_waitid - if (SINGLE_THREAD_P) - return waitid5(idtype, id, infop, options, NULL); - -# ifdef __UCLIBC_HAS_THREADS_NATIVE__ - int oldtype = LIBC_CANCEL_ASYNC (); - int result = waitid5(idtype, id, infop, options, NULL); - LIBC_CANCEL_RESET (oldtype); - return result; -# endif - -# elif defined __NR_waitpid +#ifdef __NR_waitid + return INLINE_SYSCALL(waitid, 5, idtype, id, infop, options, NULL); +#else switch (idtype) { case P_PID: if (id <= 0) @@ -65,17 +41,17 @@ int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options) } memset(infop, 0, sizeof *infop); - infop->si_pid = waitpid(id, &infop->si_status, options -# ifdef WEXITED + infop->si_pid = __NC(waitpid)(id, &infop->si_status, options +# ifdef WEXITED &~ WEXITED -# endif +# endif ); if (infop->si_pid < 0) return infop->si_pid; return 0; -# else - __set_errno(ENOSYS); - return -1; -# endif +#endif } +CANCELLABLE_SYSCALL(int, waitid, (idtype_t idtype, id_t id, siginfo_t *infop, int options), + (idtype, id, infop, options)) + #endif |